Adding upstream version 2.10.34.upstream/2.10.34 upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
author: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-04-07 18:30:19 +0000
committer: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-04-07 18:30:19 +0000
commit: 5c1676dfe6d2f3c837a5e074117b45613fd29a72 (patch)
tree: cbffb45144febf451e54061db2b21395faf94bfe /modules
parent: Initial commit. (diff)
download: gimp-5c1676dfe6d2f3c837a5e074117b45613fd29a72.tar.xz
gimp-5c1676dfe6d2f3c837a5e074117b45613fd29a72.zip
17 files changed, 9341 insertions, 0 deletions
diff --git a/modules/Makefile.am b/modules/Makefile.am
new file mode 100644
index 0000000..867fb6d
--- /dev/null
+++ b/modules/Makefile.am
@@ -0,0 +1,102 @@
+## Process this file with automake to produce Makefile.in
+
+libgimpbase = $(top_builddir)/libgimpbase/libgimpbase-$(GIMP_API_VERSION).la
+libgimpcolor = $(top_builddir)/libgimpcolor/libgimpcolor-$(GIMP_API_VERSION).la
+libgimpconfig = $(top_builddir)/libgimpconfig/libgimpconfig-$(GIMP_API_VERSION).la
+libgimpmodule = $(top_builddir)/libgimpmodule/libgimpmodule-$(GIMP_API_VERSION).la
+libgimpwidgets = $(top_builddir)/libgimpwidgets/libgimpwidgets-$(GIMP_API_VERSION).la
+
+if PLATFORM_WIN32
+no_undefined = -no-undefined
+endif
+
+libdir = $(gimpplugindir)/modules
+
+AM_CPPFLAGS = \
+        -I$(top_srcdir)	\
+	$(GEGL_CFLAGS)	\
+        $(GTK_CFLAGS)	\
+        -I$(includedir)
+
+if PLATFORM_WIN32
+else
+controller_midi_module = libcontroller-midi.la
+endif
+
+if HAVE_LINUX_INPUT
+controller_linux_input_module = libcontroller-linux-input.la
+endif
+
+if HAVE_DX_DINPUT
+controller_dx_dinput_module = libcontroller-dx-dinput.la
+endif
+
+lib_LTLIBRARIES = \
+	libcolor-selector-cmyk.la		\
+	libcolor-selector-water.la		\
+	libcolor-selector-wheel.la		\
+	libdisplay-filter-clip-warning.la	\
+	libdisplay-filter-color-blind.la	\
+	libdisplay-filter-gamma.la		\
+	libdisplay-filter-high-contrast.la	\
+	$(controller_midi_module)		\
+	$(controller_linux_input_module)	\
+	$(controller_dx_dinput_module)
+
+
+modules_libadd = $(libgimpmodule) $(libgimpwidgets) $(GTK_LIBS)
+
+color_selector_libadd = $(libgimpconfig) $(libgimpcolor) $(modules_libadd) $(BABL_LIBS)
+display_filter_libadd = $(libgimpbase) $(libgimpconfig) $(libgimpcolor) $(modules_libadd) $(GEGL_LIBS)
+controller_libadd = $(modules_libadd)
+
+libcolor_selector_cmyk_la_SOURCES = color-selector-cmyk.c
+libcolor_selector_cmyk_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libcolor_selector_cmyk_la_LIBADD = $(libgimpconfig) $(color_selector_libadd)
+
+libcolor_selector_water_la_SOURCES = color-selector-water.c
+libcolor_selector_water_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libcolor_selector_water_la_LIBADD = $(color_selector_libadd)
+
+libcolor_selector_wheel_la_SOURCES = color-selector-wheel.c gimpcolorwheel.c gimpcolorwheel.h
+libcolor_selector_wheel_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libcolor_selector_wheel_la_LIBADD = $(color_selector_libadd)
+
+libdisplay_filter_clip_warning_la_SOURCES = display-filter-clip-warning.c
+libdisplay_filter_clip_warning_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libdisplay_filter_clip_warning_la_LIBADD = $(display_filter_libadd)
+
+libdisplay_filter_color_blind_la_SOURCES = display-filter-color-blind.c
+libdisplay_filter_color_blind_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libdisplay_filter_color_blind_la_LIBADD = $(display_filter_libadd)
+
+libdisplay_filter_gamma_la_SOURCES = display-filter-gamma.c
+libdisplay_filter_gamma_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libdisplay_filter_gamma_la_LIBADD = $(display_filter_libadd)
+
+libdisplay_filter_high_contrast_la_SOURCES = display-filter-high-contrast.c
+libdisplay_filter_high_contrast_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libdisplay_filter_high_contrast_la_LIBADD = $(display_filter_libadd)
+
+libcontroller_linux_input_la_SOURCES = \
+	gimpinputdevicestore-gudev.c	\
+	gimpinputdevicestore.h		\
+	controller-linux-input.c
+libcontroller_linux_input_la_CFLAGS = $(GUDEV_CFLAGS)
+libcontroller_linux_input_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libcontroller_linux_input_la_LIBADD = \
+	$(controller_libadd) $(GUDEV_LIBS)
+
+libcontroller_dx_dinput_la_SOURCES = \
+	gimpinputdevicestore-dx.c	\
+	gimpinputdevicestore.h		\
+	controller-dx-dinput.c
+# Use -Wl to avoid libtool lossage
+libcontroller_dx_dinput_la_LDFLAGS = -avoid-version -module $(no_undefined) -Wl,-ldinput8 -Wl,-ldxguid
+libcontroller_dx_dinput_la_LIBADD = \
+	$(controller_libadd) -lrpcrt4
+
+libcontroller_midi_la_SOURCES = controller-midi.c
+libcontroller_midi_la_CFLAGS = $(ALSA_CFLAGS)
+libcontroller_midi_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libcontroller_midi_la_LIBADD = $(controller_libadd) $(ALSA_LIBS)
diff --git a/modules/Makefile.in b/modules/Makefile.in
new file mode 100644
index 0000000..93ff541
--- /dev/null
+++ b/modules/Makefile.in
@@ -0,0 +1,1247 @@
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+libcolor_selector_water_la_SOURCES = color-selector-water.c
+libcolor_selector_water_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libcolor_selector_water_la_LIBADD = $(color_selector_libadd)
+libcolor_selector_wheel_la_SOURCES = color-selector-wheel.c gimpcolorwheel.c gimpcolorwheel.h
+libcolor_selector_wheel_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libcolor_selector_wheel_la_LIBADD = $(color_selector_libadd)
+libdisplay_filter_clip_warning_la_SOURCES = display-filter-clip-warning.c
+libdisplay_filter_clip_warning_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libdisplay_filter_clip_warning_la_LIBADD = $(display_filter_libadd)
+libdisplay_filter_color_blind_la_SOURCES = display-filter-color-blind.c
+libdisplay_filter_color_blind_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libdisplay_filter_color_blind_la_LIBADD = $(display_filter_libadd)
+libdisplay_filter_gamma_la_SOURCES = display-filter-gamma.c
+libdisplay_filter_gamma_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libdisplay_filter_gamma_la_LIBADD = $(display_filter_libadd)
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+libcontroller_linux_input_la_SOURCES = \
+	gimpinputdevicestore-gudev.c	\
+	gimpinputdevicestore.h		\
+	controller-linux-input.c
+
+libcontroller_linux_input_la_CFLAGS = $(GUDEV_CFLAGS)
+libcontroller_linux_input_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libcontroller_linux_input_la_LIBADD = \
+	$(controller_libadd) $(GUDEV_LIBS)
+
+libcontroller_dx_dinput_la_SOURCES = \
+	gimpinputdevicestore-dx.c	\
+	gimpinputdevicestore.h		\
+	controller-dx-dinput.c
+
+# Use -Wl to avoid libtool lossage
+libcontroller_dx_dinput_la_LDFLAGS = -avoid-version -module $(no_undefined) -Wl,-ldinput8 -Wl,-ldxguid
+libcontroller_dx_dinput_la_LIBADD = \
+	$(controller_libadd) -lrpcrt4
+
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+libcontroller_midi_la_LDFLAGS = -avoid-version -module $(no_undefined)
+libcontroller_midi_la_LIBADD = $(controller_libadd) $(ALSA_LIBS)
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+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libLTLIBRARIES clean-libtool \
+	mostlyclean-am
+
+distclean: distclean-am
+		-rm -f ./$(DEPDIR)/color-selector-cmyk.Plo
+	-rm -f ./$(DEPDIR)/color-selector-water.Plo
+	-rm -f ./$(DEPDIR)/color-selector-wheel.Plo
+	-rm -f ./$(DEPDIR)/controller-dx-dinput.Plo
+	-rm -f ./$(DEPDIR)/display-filter-clip-warning.Plo
+	-rm -f ./$(DEPDIR)/display-filter-color-blind.Plo
+	-rm -f ./$(DEPDIR)/display-filter-gamma.Plo
+	-rm -f ./$(DEPDIR)/display-filter-high-contrast.Plo
+	-rm -f ./$(DEPDIR)/gimpcolorwheel.Plo
+	-rm -f ./$(DEPDIR)/gimpinputdevicestore-dx.Plo
+	-rm -f ./$(DEPDIR)/libcontroller_linux_input_la-controller-linux-input.Plo
+	-rm -f ./$(DEPDIR)/libcontroller_linux_input_la-gimpinputdevicestore-gudev.Plo
+	-rm -f ./$(DEPDIR)/libcontroller_midi_la-controller-midi.Plo
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am: install-libLTLIBRARIES
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+		-rm -f ./$(DEPDIR)/color-selector-cmyk.Plo
+	-rm -f ./$(DEPDIR)/color-selector-water.Plo
+	-rm -f ./$(DEPDIR)/color-selector-wheel.Plo
+	-rm -f ./$(DEPDIR)/controller-dx-dinput.Plo
+	-rm -f ./$(DEPDIR)/display-filter-clip-warning.Plo
+	-rm -f ./$(DEPDIR)/display-filter-color-blind.Plo
+	-rm -f ./$(DEPDIR)/display-filter-gamma.Plo
+	-rm -f ./$(DEPDIR)/display-filter-high-contrast.Plo
+	-rm -f ./$(DEPDIR)/gimpcolorwheel.Plo
+	-rm -f ./$(DEPDIR)/gimpinputdevicestore-dx.Plo
+	-rm -f ./$(DEPDIR)/libcontroller_linux_input_la-controller-linux-input.Plo
+	-rm -f ./$(DEPDIR)/libcontroller_linux_input_la-gimpinputdevicestore-gudev.Plo
+	-rm -f ./$(DEPDIR)/libcontroller_midi_la-controller-midi.Plo
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-libLTLIBRARIES
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
+	clean-generic clean-libLTLIBRARIES clean-libtool cscopelist-am \
+	ctags ctags-am distclean distclean-compile distclean-generic \
+	distclean-libtool distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-libLTLIBRARIES install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	tags tags-am uninstall uninstall-am uninstall-libLTLIBRARIES
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/modules/color-selector-cmyk.c b/modules/color-selector-cmyk.c
new file mode 100644
index 0000000..7fba514
--- /dev/null
+++ b/modules/color-selector-cmyk.c
@@ -0,0 +1,421 @@
+/* GIMP CMYK ColorSelector using littleCMS
+ * Copyright (C) 2006  Sven Neumann <sven@gimp.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpconfig/gimpconfig.h"
+#include "libgimpmodule/gimpmodule.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "libgimp/libgimp-intl.h"
+
+
+/* definitions and variables */
+
+#define COLORSEL_TYPE_CMYK            (colorsel_cmyk_get_type ())
+#define COLORSEL_CMYK(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), COLORSEL_TYPE_CMYK, ColorselCmyk))
+#define COLORSEL_CMYK_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), COLORSEL_TYPE_CMYK, ColorselCmykClass))
+#define COLORSEL_IS_CMYK(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), COLORSEL_TYPE_CMYK))
+#define COLORSEL_IS_CMYK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), COLORSEL_TYPE_CMYK))
+
+
+typedef struct _ColorselCmyk      ColorselCmyk;
+typedef struct _ColorselCmykClass ColorselCmykClass;
+
+struct _ColorselCmyk
+{
+  GimpColorSelector   parent_instance;
+
+  GimpColorConfig    *config;
+  GimpColorTransform *rgb2cmyk;
+  GimpColorTransform *cmyk2rgb;
+
+  GimpCMYK            cmyk;
+  GtkAdjustment      *adj[4];
+  GtkWidget          *name_label;
+
+  gboolean            in_destruction;
+};
+
+struct _ColorselCmykClass
+{
+  GimpColorSelectorClass  parent_class;
+};
+
+
+static GType  colorsel_cmyk_get_type       (void);
+
+static void   colorsel_cmyk_dispose        (GObject           *object);
+
+static void   colorsel_cmyk_set_color      (GimpColorSelector *selector,
+                                            const GimpRGB     *rgb,
+                                            const GimpHSV     *hsv);
+static void   colorsel_cmyk_set_config     (GimpColorSelector *selector,
+                                            GimpColorConfig   *config);
+
+static void   colorsel_cmyk_adj_update     (GtkAdjustment     *adj,
+                                            ColorselCmyk      *module);
+static void   colorsel_cmyk_config_changed (ColorselCmyk      *module);
+
+
+static const GimpModuleInfo colorsel_cmyk_info =
+{
+  GIMP_MODULE_ABI_VERSION,
+  N_("CMYK color selector (using color profile)"),
+  "Sven Neumann <sven@gimp.org>",
+  "v0.1",
+  "(c) 2006, released under the GPL",
+  "September 2006"
+};
+
+
+G_DEFINE_DYNAMIC_TYPE (ColorselCmyk, colorsel_cmyk,
+                       GIMP_TYPE_COLOR_SELECTOR)
+
+
+G_MODULE_EXPORT const GimpModuleInfo *
+gimp_module_query (GTypeModule *module)
+{
+  return &colorsel_cmyk_info;
+}
+
+G_MODULE_EXPORT gboolean
+gimp_module_register (GTypeModule *module)
+{
+  colorsel_cmyk_register_type (module);
+
+  return TRUE;
+}
+
+static void
+colorsel_cmyk_class_init (ColorselCmykClass *klass)
+{
+  GObjectClass           *object_class   = G_OBJECT_CLASS (klass);
+  GimpColorSelectorClass *selector_class = GIMP_COLOR_SELECTOR_CLASS (klass);
+
+  object_class->dispose      = colorsel_cmyk_dispose;
+
+  selector_class->name       = _("CMYK");
+  selector_class->help_id    = "gimp-colorselector-cmyk";
+  selector_class->icon_name  = GIMP_ICON_COLOR_SELECTOR_CMYK;
+  selector_class->set_color  = colorsel_cmyk_set_color;
+  selector_class->set_config = colorsel_cmyk_set_config;
+}
+
+static void
+colorsel_cmyk_class_finalize (ColorselCmykClass *klass)
+{
+}
+
+static void
+colorsel_cmyk_init (ColorselCmyk *module)
+{
+  GtkWidget *table;
+  GtkObject *adj;
+  gint       i;
+
+  static const gchar * const cmyk_labels[] =
+  {
+    /* Cyan        */
+    N_("_C"),
+    /* Magenta     */
+    N_("_M"),
+    /* Yellow      */
+    N_("_Y"),
+    /* Key (Black) */
+    N_("_K")
+  };
+  static const gchar * const cmyk_tips[] =
+  {
+    N_("Cyan"),
+    N_("Magenta"),
+    N_("Yellow"),
+    N_("Black")
+  };
+
+  module->config   = NULL;
+  module->rgb2cmyk = NULL;
+  module->cmyk2rgb = NULL;
+
+  gtk_box_set_spacing (GTK_BOX (module), 6);
+
+  table = gtk_table_new (4, 4, FALSE);
+
+  gtk_table_set_row_spacings (GTK_TABLE (table), 1);
+  gtk_table_set_col_spacings (GTK_TABLE (table), 2);
+  gtk_table_set_col_spacing (GTK_TABLE (table), 0, 0);
+
+  gtk_box_pack_start (GTK_BOX (module), table, FALSE, FALSE, 0);
+  gtk_widget_show (table);
+
+  for (i = 0; i < 4; i++)
+    {
+      adj = gimp_scale_entry_new (GTK_TABLE (table), 1, i,
+                                  gettext (cmyk_labels[i]),
+                                  -1, -1,
+                                  0.0,
+                                  0.0, 100.0,
+                                  1.0, 10.0,
+                                  0,
+                                  TRUE, 0.0, 0.0,
+                                  gettext (cmyk_tips[i]),
+                                  NULL);
+
+      g_signal_connect (adj, "value-changed",
+                        G_CALLBACK (colorsel_cmyk_adj_update),
+                        module);
+
+      module->adj[i] = GTK_ADJUSTMENT (adj);
+    }
+
+  module->name_label = gtk_label_new (NULL);
+  gtk_label_set_xalign (GTK_LABEL (module->name_label), 0.0);
+  gtk_label_set_ellipsize (GTK_LABEL (module->name_label), PANGO_ELLIPSIZE_END);
+  gimp_label_set_attributes (GTK_LABEL (module->name_label),
+                             PANGO_ATTR_SCALE, PANGO_SCALE_SMALL,
+                             -1);
+  gtk_box_pack_start (GTK_BOX (module), module->name_label, FALSE, FALSE, 0);
+  gtk_widget_show (module->name_label);
+}
+
+static void
+colorsel_cmyk_dispose (GObject *object)
+{
+  ColorselCmyk *module = COLORSEL_CMYK (object);
+
+  module->in_destruction = TRUE;
+
+  colorsel_cmyk_set_config (GIMP_COLOR_SELECTOR (object), NULL);
+
+  G_OBJECT_CLASS (colorsel_cmyk_parent_class)->dispose (object);
+}
+
+static void
+colorsel_cmyk_set_color (GimpColorSelector *selector,
+                         const GimpRGB     *rgb,
+                         const GimpHSV     *hsv)
+{
+  ColorselCmyk *module = COLORSEL_CMYK (selector);
+  gdouble       values[4];
+  gint          i;
+
+  if (module->rgb2cmyk)
+    {
+      gdouble rgb_values[3];
+      gdouble cmyk_values[4];
+
+      rgb_values[0] = rgb->r;
+      rgb_values[1] = rgb->g;
+      rgb_values[2] = rgb->b;
+
+      gimp_color_transform_process_pixels (module->rgb2cmyk,
+                                           babl_format ("R'G'B' double"),
+                                           rgb_values,
+                                           babl_format ("CMYK double"),
+                                           cmyk_values,
+                                           1);
+
+      module->cmyk.c = cmyk_values[0] / 100.0;
+      module->cmyk.m = cmyk_values[1] / 100.0;
+      module->cmyk.y = cmyk_values[2] / 100.0;
+      module->cmyk.k = cmyk_values[3] / 100.0;
+    }
+  else
+    {
+      gimp_rgb_to_cmyk (rgb, 1.0, &module->cmyk);
+    }
+
+  values[0] = module->cmyk.c * 100.0;
+  values[1] = module->cmyk.m * 100.0;
+  values[2] = module->cmyk.y * 100.0;
+  values[3] = module->cmyk.k * 100.0;
+
+  for (i = 0; i < 4; i++)
+    {
+      g_signal_handlers_block_by_func (module->adj[i],
+                                       colorsel_cmyk_adj_update,
+                                       module);
+
+      gtk_adjustment_set_value (module->adj[i], values[i]);
+
+      g_signal_handlers_unblock_by_func (module->adj[i],
+                                         colorsel_cmyk_adj_update,
+                                         module);
+    }
+}
+
+static void
+colorsel_cmyk_set_config (GimpColorSelector *selector,
+                          GimpColorConfig   *config)
+{
+  ColorselCmyk *module = COLORSEL_CMYK (selector);
+
+  if (config != module->config)
+    {
+      if (module->config)
+        g_signal_handlers_disconnect_by_func (module->config,
+                                              colorsel_cmyk_config_changed,
+                                              module);
+
+      g_set_object (&module->config, config);
+
+      if (module->config)
+        g_signal_connect_swapped (module->config, "notify",
+                                  G_CALLBACK (colorsel_cmyk_config_changed),
+                                  module);
+
+      colorsel_cmyk_config_changed (module);
+    }
+}
+
+static void
+colorsel_cmyk_adj_update (GtkAdjustment *adj,
+                          ColorselCmyk  *module)
+{
+  GimpColorSelector *selector = GIMP_COLOR_SELECTOR (module);
+  gint               i;
+  gdouble            value;
+
+  for (i = 0; i < 4; i++)
+    if (module->adj[i] == adj)
+      break;
+
+  value = gtk_adjustment_get_value (adj) / 100.0;
+
+  switch (i)
+    {
+    case 0:
+      module->cmyk.c = value;
+      break;
+    case 1:
+      module->cmyk.m = value;
+      break;
+    case 2:
+      module->cmyk.y = value;
+      break;
+    case 3:
+      module->cmyk.k = value;
+      break;
+    default:
+      return;
+    }
+
+  if (module->cmyk2rgb)
+    {
+      gdouble cmyk_values[4];
+      gdouble rgb_values[3];
+
+      cmyk_values[0] = module->cmyk.c * 100.0;
+      cmyk_values[1] = module->cmyk.m * 100.0;
+      cmyk_values[2] = module->cmyk.y * 100.0;
+      cmyk_values[3] = module->cmyk.k * 100.0;
+
+      gimp_color_transform_process_pixels (module->cmyk2rgb,
+                                           babl_format ("CMYK double"),
+                                           cmyk_values,
+                                           babl_format ("R'G'B' double"),
+                                           rgb_values,
+                                           1);
+
+      selector->rgb.r = rgb_values[0];
+      selector->rgb.g = rgb_values[1];
+      selector->rgb.b = rgb_values[2];
+    }
+  else
+    {
+      gimp_cmyk_to_rgb (&module->cmyk, &selector->rgb);
+    }
+
+  gimp_rgb_to_hsv (&selector->rgb, &selector->hsv);
+
+  gimp_color_selector_color_changed (selector);
+}
+
+static void
+colorsel_cmyk_config_changed (ColorselCmyk *module)
+{
+  GimpColorSelector       *selector     = GIMP_COLOR_SELECTOR (module);
+  GimpColorConfig         *config       = module->config;
+  GimpColorTransformFlags  flags        = 0;
+  GimpColorProfile        *rgb_profile  = NULL;
+  GimpColorProfile        *cmyk_profile = NULL;
+  gchar                   *text;
+
+  if (module->rgb2cmyk)
+    {
+      g_object_unref (module->rgb2cmyk);
+      module->rgb2cmyk = NULL;
+    }
+
+  if (module->cmyk2rgb)
+    {
+      g_object_unref (module->cmyk2rgb);
+      module->cmyk2rgb = NULL;
+    }
+
+  gtk_label_set_text (GTK_LABEL (module->name_label), _("Profile: (none)"));
+  gimp_help_set_help_data (module->name_label, NULL, NULL);
+
+  if (! config)
+    goto out;
+
+  cmyk_profile = gimp_color_config_get_cmyk_color_profile (config, NULL);
+  if (! cmyk_profile)
+    goto out;
+
+  rgb_profile = gimp_color_profile_new_rgb_srgb ();
+
+  text = g_strdup_printf (_("Profile: %s"),
+                          gimp_color_profile_get_label (cmyk_profile));
+  gtk_label_set_text (GTK_LABEL (module->name_label), text);
+  g_free (text);
+
+  gimp_help_set_help_data (module->name_label,
+                           gimp_color_profile_get_summary (cmyk_profile),
+                           NULL);
+
+  flags |= GIMP_COLOR_TRANSFORM_FLAGS_NOOPTIMIZE;
+  flags |= GIMP_COLOR_TRANSFORM_FLAGS_BLACK_POINT_COMPENSATION;
+
+  module->rgb2cmyk = gimp_color_transform_new (rgb_profile,
+                                               babl_format ("R'G'B' double"),
+                                               cmyk_profile,
+                                               babl_format ("CMYK double"),
+                                               GIMP_COLOR_RENDERING_INTENT_PERCEPTUAL,
+                                               flags);
+  module->cmyk2rgb = gimp_color_transform_new (cmyk_profile,
+                                               babl_format ("CMYK double"),
+                                               rgb_profile,
+                                               babl_format ("R'G'B' double"),
+                                               GIMP_COLOR_RENDERING_INTENT_PERCEPTUAL,
+                                               flags);
+
+ out:
+
+  if (rgb_profile)
+    g_object_unref (rgb_profile);
+
+  if (cmyk_profile)
+    g_object_unref (cmyk_profile);
+
+  if (! module->in_destruction)
+    colorsel_cmyk_set_color (selector, &selector->rgb, &selector->hsv);
+}
diff --git a/modules/color-selector-water.c b/modules/color-selector-water.c
new file mode 100644
index 0000000..faec37d
--- /dev/null
+++ b/modules/color-selector-water.c
@@ -0,0 +1,545 @@
+/* Watercolor color_select_module, Raph Levien <raph@acm.org>, February 1998
+ *
+ * Ported to loadable color-selector, Sven Neumann <sven@gimp.org>, May 1999
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpmodule/gimpmodule.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "libgimp/libgimp-intl.h"
+
+
+#define COLORSEL_TYPE_WATER            (colorsel_water_get_type ())
+#define COLORSEL_WATER(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), COLORSEL_TYPE_WATER, ColorselWater))
+#define COLORSEL_WATER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), COLORSEL_TYPE_WATER, ColorselWaterClass))
+#define COLORSEL_IS_WATER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), COLORSEL_TYPE_WATER))
+#define COLORSEL_IS_WATER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), COLORSEL_TYPE_WATER))
+
+
+typedef struct _ColorselWater      ColorselWater;
+typedef struct _ColorselWaterClass ColorselWaterClass;
+
+struct _ColorselWater
+{
+  GimpColorSelector   parent_instance;
+
+  GtkWidget          *area;
+
+  gdouble             last_x;
+  gdouble             last_y;
+
+  gfloat              pressure_adjust;
+  guint32             motion_time;
+
+  GimpColorConfig    *config;
+  GimpColorTransform *transform;
+};
+
+struct _ColorselWaterClass
+{
+  GimpColorSelectorClass  parent_class;
+};
+
+
+static GType      colorsel_water_get_type          (void);
+
+static void       colorsel_water_dispose           (GObject           *object);
+
+static void       colorsel_water_set_config        (GimpColorSelector *selector,
+                                                    GimpColorConfig   *config);
+
+static void       colorsel_water_create_transform  (ColorselWater     *water);
+static void       colorsel_water_destroy_transform (ColorselWater     *water);
+
+static gboolean   select_area_expose               (GtkWidget         *widget,
+                                                    GdkEventExpose    *event,
+                                                    ColorselWater     *water);
+static gboolean   button_press_event               (GtkWidget         *widget,
+                                                    GdkEventButton    *event,
+                                                    ColorselWater     *water);
+static gboolean   motion_notify_event              (GtkWidget         *widget,
+                                                    GdkEventMotion    *event,
+                                                    ColorselWater     *water);
+static gboolean   proximity_out_event              (GtkWidget         *widget,
+                                                    GdkEventProximity *event,
+                                                    ColorselWater     *water);
+static void       pressure_adjust_update           (GtkAdjustment     *adj,
+                                                    ColorselWater     *water);
+
+
+static const GimpModuleInfo colorsel_water_info =
+{
+  GIMP_MODULE_ABI_VERSION,
+  N_("Watercolor style color selector"),
+  "Raph Levien <raph@acm.org>, Sven Neumann <sven@gimp.org>",
+  "v0.4",
+  "released under the GPL",
+  "1998-2006"
+};
+
+
+G_DEFINE_DYNAMIC_TYPE (ColorselWater, colorsel_water,
+                       GIMP_TYPE_COLOR_SELECTOR)
+
+
+G_MODULE_EXPORT const GimpModuleInfo *
+gimp_module_query (GTypeModule *module)
+{
+  return &colorsel_water_info;
+}
+
+G_MODULE_EXPORT gboolean
+gimp_module_register (GTypeModule *module)
+{
+  colorsel_water_register_type (module);
+
+  return TRUE;
+}
+
+static void
+colorsel_water_class_init (ColorselWaterClass *klass)
+{
+  GObjectClass           *object_class   = G_OBJECT_CLASS (klass);
+  GimpColorSelectorClass *selector_class = GIMP_COLOR_SELECTOR_CLASS (klass);
+
+  object_class->dispose      = colorsel_water_dispose;
+
+  selector_class->name       = _("Watercolor");
+  selector_class->help_id    = "gimp-colorselector-watercolor";
+  selector_class->icon_name  = GIMP_ICON_COLOR_SELECTOR_WATER;
+  selector_class->set_config = colorsel_water_set_config;
+}
+
+static void
+colorsel_water_class_finalize (ColorselWaterClass *klass)
+{
+}
+
+static void
+colorsel_water_init (ColorselWater *water)
+{
+  GtkWidget     *hbox;
+  GtkWidget     *frame;
+  GtkAdjustment *adj;
+  GtkWidget     *scale;
+
+  colorsel_water_get_type (); /* useless function call to silence compiler */
+
+  water->pressure_adjust = 1.0;
+
+  hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
+  gtk_box_pack_start (GTK_BOX (water), hbox, TRUE, TRUE, 0);
+
+  frame = gtk_frame_new (NULL);
+  gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
+  gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, TRUE, 0);
+
+  water->area = gtk_drawing_area_new ();
+  gtk_container_add (GTK_CONTAINER (frame), water->area);
+  g_signal_connect (water->area, "expose-event",
+                    G_CALLBACK (select_area_expose),
+                    water);
+
+  /* Event signals */
+  g_signal_connect (water->area, "motion-notify-event",
+                    G_CALLBACK (motion_notify_event),
+                    water);
+  g_signal_connect (water->area, "button-press-event",
+                    G_CALLBACK (button_press_event),
+                    water);
+  g_signal_connect (water->area, "proximity-out-event",
+                    G_CALLBACK (proximity_out_event),
+                    water);
+
+  gtk_widget_add_events (water->area,
+                         GDK_LEAVE_NOTIFY_MASK        |
+                         GDK_BUTTON_PRESS_MASK        |
+                         GDK_KEY_PRESS_MASK           |
+                         GDK_POINTER_MOTION_MASK      |
+                         GDK_POINTER_MOTION_HINT_MASK |
+                         GDK_PROXIMITY_OUT_MASK);
+
+  /* The following call enables tracking and processing of extension
+   * events for the drawing area
+   */
+  gtk_widget_set_extension_events (water->area, GDK_EXTENSION_EVENTS_ALL);
+  gtk_widget_grab_focus (water->area);
+
+  adj = GTK_ADJUSTMENT (gtk_adjustment_new (200.0 - water->pressure_adjust * 100.0,
+                                            0.0, 200.0, 1.0, 1.0, 0.0));
+  g_signal_connect (adj, "value-changed",
+                    G_CALLBACK (pressure_adjust_update),
+                    water);
+
+  scale = gtk_scale_new (GTK_ORIENTATION_VERTICAL, adj);
+  gtk_scale_set_digits (GTK_SCALE (scale), 0);
+  gtk_scale_set_draw_value (GTK_SCALE (scale), FALSE);
+  gimp_help_set_help_data (scale, _("Pressure"), NULL);
+  gtk_box_pack_start (GTK_BOX (hbox), scale, FALSE, FALSE, 0);
+
+  gtk_widget_show_all (hbox);
+
+  gimp_widget_track_monitor (GTK_WIDGET (water),
+                             G_CALLBACK (colorsel_water_destroy_transform),
+                             NULL);
+}
+
+static gdouble
+calc (gdouble x,
+      gdouble y,
+      gdouble angle)
+{
+  gdouble s = 2.0 * sin (angle * G_PI / 180.0) * 256.0;
+  gdouble c = 2.0 * cos (angle * G_PI / 180.0) * 256.0;
+
+  return 128 + (x - 0.5) * c - (y - 0.5) * s;
+}
+
+static void
+colorsel_water_dispose (GObject *object)
+{
+  colorsel_water_set_config (GIMP_COLOR_SELECTOR (object), NULL);
+
+  G_OBJECT_CLASS (colorsel_water_parent_class)->dispose (object);
+}
+
+static void
+colorsel_water_set_config (GimpColorSelector *selector,
+                           GimpColorConfig   *config)
+{
+  ColorselWater *water = COLORSEL_WATER (selector);
+
+  if (config != water->config)
+    {
+      if (water->config)
+        {
+          g_signal_handlers_disconnect_by_func (water->config,
+                                                colorsel_water_destroy_transform,
+                                                water);
+
+          colorsel_water_destroy_transform (water);
+        }
+
+      g_set_object (&water->config, config);
+
+      if (water->config)
+        {
+          g_signal_connect_swapped (water->config, "notify",
+                                    G_CALLBACK (colorsel_water_destroy_transform),
+                                    water);
+        }
+    }
+}
+
+static void
+colorsel_water_create_transform (ColorselWater *water)
+{
+  if (water->config)
+    {
+      static GimpColorProfile *profile = NULL;
+
+      const Babl *format = babl_format ("cairo-RGB24");
+
+      if (G_UNLIKELY (! profile))
+        profile = gimp_color_profile_new_rgb_srgb ();
+
+      water->transform = gimp_widget_get_color_transform (water->area,
+                                                          water->config,
+                                                          profile,
+                                                          format,
+                                                          format);
+    }
+}
+
+static void
+colorsel_water_destroy_transform (ColorselWater *water)
+{
+  if (water->transform)
+    {
+      g_object_unref (water->transform);
+      water->transform = NULL;
+    }
+
+  gtk_widget_queue_draw (GTK_WIDGET (water->area));
+}
+
+static gboolean
+select_area_expose (GtkWidget      *widget,
+                    GdkEventExpose *event,
+                    ColorselWater  *water)
+{
+  cairo_t         *cr;
+  GtkAllocation    allocation;
+  gdouble          dx;
+  gdouble          dy;
+  cairo_surface_t *surface;
+  guchar          *dest;
+  gdouble          y;
+  gint             j;
+
+  cr = gdk_cairo_create (event->window);
+
+  gdk_cairo_region (cr, event->region);
+  cairo_clip (cr);
+
+  gtk_widget_get_allocation (widget, &allocation);
+
+  dx = 1.0 / allocation.width;
+  dy = 1.0 / allocation.height;
+
+  surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
+                                        event->area.width,
+                                        event->area.height);
+
+  dest = cairo_image_surface_get_data (surface);
+
+  if (! water->transform)
+    colorsel_water_create_transform (water);
+
+  for (j = 0, y = event->area.y / allocation.height;
+       j < event->area.height;
+       j++, y += dy)
+    {
+      guchar  *d  = dest;
+
+      gdouble  r  = calc (0, y, 0);
+      gdouble  g  = calc (0, y, 120);
+      gdouble  b  = calc (0, y, 240);
+
+      gdouble  dr = calc (dx, y, 0)   - r;
+      gdouble  dg = calc (dx, y, 120) - g;
+      gdouble  db = calc (dx, y, 240) - b;
+
+      gint     i;
+
+      r += event->area.x * dr;
+      g += event->area.x * dg;
+      b += event->area.x * db;
+
+      for (i = 0; i < event->area.width ; i++)
+        {
+          GIMP_CAIRO_RGB24_SET_PIXEL (d,
+                                      CLAMP ((gint) r, 0, 255),
+                                      CLAMP ((gint) g, 0, 255),
+                                      CLAMP ((gint) b, 0, 255));
+
+          r += dr;
+          g += dg;
+          b += db;
+
+          d += 4;
+        }
+
+      if (water->transform)
+        gimp_color_transform_process_pixels (water->transform,
+                                             babl_format ("cairo-RGB24"),
+                                             dest,
+                                             babl_format ("cairo-RGB24"),
+                                             dest,
+                                             event->area.width);
+
+      dest += cairo_image_surface_get_stride (surface);
+    }
+
+  cairo_surface_mark_dirty (surface);
+  cairo_set_source_surface (cr, surface,
+                            event->area.x, event->area.y);
+  cairo_surface_destroy (surface);
+
+  cairo_paint (cr);
+
+  cairo_destroy (cr);
+
+  return FALSE;
+}
+
+static void
+add_pigment (ColorselWater *water,
+             gboolean       erase,
+             gdouble        x,
+             gdouble        y,
+             gdouble        much)
+{
+  GimpColorSelector *selector = GIMP_COLOR_SELECTOR (water);
+
+  much *= (gdouble) water->pressure_adjust;
+
+  if (erase)
+    {
+      selector->rgb.r = 1.0 - (1.0 - selector->rgb.r) * (1.0 - much);
+      selector->rgb.g = 1.0 - (1.0 - selector->rgb.g) * (1.0 - much);
+      selector->rgb.b = 1.0 - (1.0 - selector->rgb.b) * (1.0 - much);
+    }
+  else
+    {
+      gdouble r = calc (x, y, 0)   / 256.0;
+      gdouble g = calc (x, y, 120) / 256.0;
+      gdouble b = calc (x, y, 240) / 256.0;
+
+      selector->rgb.r *= (1.0 - (1.0 - r) * much);
+      selector->rgb.g *= (1.0 - (1.0 - g) * much);
+      selector->rgb.b *= (1.0 - (1.0 - b) * much);
+    }
+
+  gimp_rgb_clamp (&selector->rgb);
+
+  gimp_rgb_to_hsv (&selector->rgb, &selector->hsv);
+
+  gimp_color_selector_color_changed (selector);
+}
+
+static void
+draw_brush (ColorselWater *water,
+            GtkWidget     *widget,
+            gboolean       erase,
+            gdouble        x,
+            gdouble        y,
+            gdouble        pressure)
+{
+  gdouble much = sqrt (SQR (x - water->last_x) + SQR (y - water->last_y));
+
+  add_pigment (water, erase, x, y, much * pressure);
+
+  water->last_x = x;
+  water->last_y = y;
+}
+
+static gboolean
+button_press_event (GtkWidget      *widget,
+                    GdkEventButton *event,
+                    ColorselWater  *water)
+{
+  GtkAllocation allocation;
+  gboolean      erase;
+
+  gtk_widget_get_allocation (widget, &allocation);
+
+  water->last_x = event->x / allocation.width;
+  water->last_y = event->y / allocation.height;
+
+  erase = (event->button != 1);
+  /* FIXME: (event->source == GDK_SOURCE_ERASER) */
+
+  if (event->state & GDK_SHIFT_MASK)
+    erase = !erase;
+
+  add_pigment (water, erase, water->last_x, water->last_y, 0.05);
+
+  water->motion_time = event->time;
+
+  return FALSE;
+}
+
+static gboolean
+motion_notify_event (GtkWidget      *widget,
+                     GdkEventMotion *event,
+                     ColorselWater  *water)
+{
+  GtkAllocation  allocation;
+  GdkTimeCoord **coords;
+  gint           nevents;
+  gint           i;
+  gboolean       erase;
+
+  gtk_widget_get_allocation (widget, &allocation);
+
+  if (event->state & (GDK_BUTTON1_MASK |
+                      GDK_BUTTON2_MASK |
+                      GDK_BUTTON3_MASK |
+                      GDK_BUTTON4_MASK))
+    {
+      guint32 last_motion_time = event->time;
+
+      erase = ((event->state &
+                (GDK_BUTTON2_MASK | GDK_BUTTON3_MASK | GDK_BUTTON4_MASK)) ||
+               FALSE);
+      /* FIXME: (event->source == GDK_SOURCE_ERASER) */
+
+      if (event->state & GDK_SHIFT_MASK)
+        erase = !erase;
+
+      water->motion_time = event->time;
+
+      if (gdk_device_get_history (event->device,
+                                  event->window,
+                                  last_motion_time,
+                                  event->time,
+                                  &coords,
+                                  &nevents))
+        {
+          for (i = 0; i < nevents; i++)
+            {
+              gdouble x        = 0.0;
+              gdouble y        = 0.0;
+              gdouble pressure = 0.5;
+
+              gdk_device_get_axis (event->device, coords[i]->axes,
+                                   GDK_AXIS_X, &x);
+              gdk_device_get_axis (event->device, coords[i]->axes,
+                                   GDK_AXIS_Y, &y);
+              gdk_device_get_axis (event->device, coords[i]->axes,
+                                   GDK_AXIS_PRESSURE, &pressure);
+
+              draw_brush (water, widget, erase,
+                          x / allocation.width,
+                          y / allocation.height, pressure);
+            }
+
+          gdk_device_free_history (coords, nevents);
+        }
+      else
+        {
+          gdouble pressure = 0.5;
+
+          gdk_event_get_axis ((GdkEvent *) event, GDK_AXIS_PRESSURE, &pressure);
+
+          draw_brush (water, widget, erase,
+                      event->x / allocation.width,
+                      event->y / allocation.height, pressure);
+        }
+    }
+
+  /* Ask for more motion events in case the event was a hint */
+  gdk_event_request_motions (event);
+
+  return TRUE;
+}
+
+static gboolean
+proximity_out_event (GtkWidget         *widget,
+                     GdkEventProximity *event,
+                     ColorselWater     *water)
+{
+  return TRUE;
+}
+
+static void
+pressure_adjust_update (GtkAdjustment *adj,
+                        ColorselWater *water)
+{
+  water->pressure_adjust = (gtk_adjustment_get_upper (adj) -
+                            gtk_adjustment_get_value (adj)) / 100.0;
+}
diff --git a/modules/color-selector-wheel.c b/modules/color-selector-wheel.c
new file mode 100644
index 0000000..47adb75
--- /dev/null
+++ b/modules/color-selector-wheel.c
@@ -0,0 +1,169 @@
+/* GIMP Wheel ColorSelector
+ * Copyright (C) 2008  Michael Natterer <mitch@gimp.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpmodule/gimpmodule.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "gimpcolorwheel.h"
+
+#include "libgimp/libgimp-intl.h"
+
+
+#define COLORSEL_TYPE_WHEEL            (colorsel_wheel_get_type ())
+#define COLORSEL_WHEEL(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), COLORSEL_TYPE_WHEEL, ColorselWheel))
+#define COLORSEL_WHEEL_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), COLORSEL_TYPE_WHEEL, ColorselWheelClass))
+#define COLORSEL_IS_WHEEL(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), COLORSEL_TYPE_WHEEL))
+#define COLORSEL_IS_WHEEL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), COLORSEL_TYPE_WHEEL))
+
+
+typedef struct _ColorselWheel      ColorselWheel;
+typedef struct _ColorselWheelClass ColorselWheelClass;
+
+struct _ColorselWheel
+{
+  GimpColorSelector  parent_instance;
+
+  GtkWidget         *hsv;
+};
+
+struct _ColorselWheelClass
+{
+  GimpColorSelectorClass  parent_class;
+};
+
+
+static GType  colorsel_wheel_get_type      (void);
+
+static void   colorsel_wheel_set_color     (GimpColorSelector *selector,
+                                            const GimpRGB     *rgb,
+                                            const GimpHSV     *hsv);
+static void   colorsel_wheel_set_config    (GimpColorSelector *selector,
+                                            GimpColorConfig   *config);
+static void   colorsel_wheel_changed       (GimpColorWheel    *hsv,
+                                            GimpColorSelector *selector);
+
+static const GimpModuleInfo colorsel_wheel_info =
+{
+  GIMP_MODULE_ABI_VERSION,
+  N_("HSV color wheel"),
+  "Michael Natterer <mitch@gimp.org>",
+  "v1.0",
+  "(c) 2008, released under the GPL",
+  "08 Aug 2008"
+};
+
+
+G_DEFINE_DYNAMIC_TYPE (ColorselWheel, colorsel_wheel,
+                       GIMP_TYPE_COLOR_SELECTOR)
+
+
+G_MODULE_EXPORT const GimpModuleInfo *
+gimp_module_query (GTypeModule *module)
+{
+  return &colorsel_wheel_info;
+}
+
+G_MODULE_EXPORT gboolean
+gimp_module_register (GTypeModule *module)
+{
+  color_wheel_register_type (module);
+  colorsel_wheel_register_type (module);
+
+  return TRUE;
+}
+
+static void
+colorsel_wheel_class_init (ColorselWheelClass *klass)
+{
+  GimpColorSelectorClass *selector_class = GIMP_COLOR_SELECTOR_CLASS (klass);
+
+  selector_class->name       = _("Wheel");
+  selector_class->help_id    = "gimp-colorselector-triangle";
+  selector_class->icon_name  = GIMP_ICON_COLOR_SELECTOR_TRIANGLE;
+  selector_class->set_color  = colorsel_wheel_set_color;
+  selector_class->set_config = colorsel_wheel_set_config;
+}
+
+static void
+colorsel_wheel_class_finalize (ColorselWheelClass *klass)
+{
+}
+
+static void
+colorsel_wheel_init (ColorselWheel *wheel)
+{
+  GtkWidget *frame;
+
+  frame = gtk_frame_new (NULL);
+  gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
+  gtk_box_pack_start (GTK_BOX (wheel), frame, TRUE, TRUE, 0);
+  gtk_widget_show (frame);
+
+  wheel->hsv = gimp_color_wheel_new ();
+  g_object_add_weak_pointer (G_OBJECT (wheel->hsv),
+                             (gpointer) &wheel->hsv);
+  gtk_container_add (GTK_CONTAINER (frame), wheel->hsv);
+  gtk_widget_show (wheel->hsv);
+
+  g_signal_connect (wheel->hsv, "changed",
+                    G_CALLBACK (colorsel_wheel_changed),
+                    wheel);
+}
+
+static void
+colorsel_wheel_set_color (GimpColorSelector *selector,
+                          const GimpRGB     *rgb,
+                          const GimpHSV     *hsv)
+{
+  ColorselWheel *wheel = COLORSEL_WHEEL (selector);
+
+  gimp_color_wheel_set_color (GIMP_COLOR_WHEEL (wheel->hsv),
+                              hsv->h, hsv->s, hsv->v);
+}
+
+static void
+colorsel_wheel_set_config (GimpColorSelector *selector,
+                           GimpColorConfig   *config)
+{
+  ColorselWheel *wheel = COLORSEL_WHEEL (selector);
+
+  if (wheel->hsv)
+    gimp_color_wheel_set_color_config (GIMP_COLOR_WHEEL (wheel->hsv), config);
+}
+
+static void
+colorsel_wheel_changed (GimpColorWheel    *hsv,
+                        GimpColorSelector *selector)
+{
+  gimp_color_wheel_get_color (hsv,
+                              &selector->hsv.h,
+                              &selector->hsv.s,
+                              &selector->hsv.v);
+  gimp_hsv_to_rgb (&selector->hsv, &selector->rgb);
+
+  gimp_color_selector_color_changed (selector);
+}
diff --git a/modules/controller-dx-dinput.c b/modules/controller-dx-dinput.c
new file mode 100644
index 0000000..87c0eab
--- /dev/null
+++ b/modules/controller-dx-dinput.c
@@ -0,0 +1,1122 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
+ *
+ * controller_dx_dinput.c
+ * Copyright (C) 2004-2007 Sven Neumann <sven@gimp.org>
+ *                         Michael Natterer <mitch@gimp.org>
+ *                         Tor Lillqvist <tml@iki.fi>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/* When using gcc with the February 2007 version of the DirectX SDK,
+ * at least, you need to fix a couple of duplicate typedefs in the
+ * DirectX <dinput.h>. Unfortunately I can't include the diff here,
+ * both for copyright reasons, and because that would confuse the C
+ * lexer even if inside #if 0.
+ */
+
+#include "config.h"
+
+#include <errno.h>
+#include <string.h>
+#include <math.h>
+
+#define _WIN32_WINNT 0x0501
+#include <windows.h>
+#define DIRECTINPUT_VERSION 0x0800
+#include <dinput.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpconfig/gimpconfig.h"
+#include "libgimpmodule/gimpmodule.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#define GIMP_ENABLE_CONTROLLER_UNDER_CONSTRUCTION
+#include "libgimpwidgets/gimpcontroller.h"
+
+#include "gimpinputdevicestore.h"
+
+#include "libgimp/libgimp-intl.h"
+
+enum
+{
+  PROP_0,
+  PROP_DEVICE,
+  PROP_DEVICE_STORE
+};
+
+#define NUM_EVENTS_PER_BUTTON 3 /* Button click, press and release */
+#define NUM_EVENTS_PER_AXIS 2   /* Axis decrease and increase */
+#define NUM_EVENTS_PER_SLIDER 2 /* Slider decrease and increase */
+#define NUM_EVENTS_PER_POV 3    /* POV view vector X and Y view and return */
+
+#define CONTROLLER_TYPE_DX_DINPUT            (controller_dx_dinput_get_type ())
+#define CONTROLLER_DX_DINPUT(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), CONTROLLER_TYPE_DX_DINPUT, ControllerDXDInput))
+#define CONTROLLER_DX_DINPUT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), CONTROLLER_TYPE_DX_DINPUT, ControllerDXDInputClass))
+#define CONTROLLER_IS_DX_DINPUT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CONTROLLER_TYPE_DX_DINPUT))
+#define CONTROLLER_IS_DX_DINPUT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CONTROLLER_TYPE_DX_DINPUT))
+
+typedef struct _DXDInputSource          DXDInputSource;
+typedef struct _ControllerDXDInput      ControllerDXDInput;
+typedef struct _ControllerDXDInputClass ControllerDXDInputClass;
+
+struct _DXDInputSource
+{
+  GSource             source;
+  ControllerDXDInput *controller;
+};
+
+struct _ControllerDXDInput
+{
+  GimpController        parent_instance;
+
+  GimpInputDeviceStore *store;
+
+  LPDIRECTINPUTDEVICE8W didevice8;
+
+  HANDLE                event;
+
+  GPollFD              *pollfd;
+
+  gint                  num_buttons;
+  gint                  num_button_events;
+
+  gint                  num_axes;
+  gint                  num_axis_events;
+
+  gint                  num_sliders;
+  gint                  num_slider_events;
+
+  gint                  num_povs;
+  gint                  num_pov_events;
+
+  gint                  num_events;
+  gchar               **event_names;
+  gchar               **event_blurbs;
+
+  DIDATAFORMAT         *format;
+
+  guchar               *prevdata;
+
+  gchar                *guid;
+  GSource              *source;
+
+  /* Variables used by enumeration callbacks only*/
+  gint                  bei, bi, aei, ai, sei, si, pei, pi;
+};
+
+struct _ControllerDXDInputClass
+{
+  GimpControllerClass  parent_class;
+};
+
+
+static GType  controller_dx_dinput_get_type     (void);
+
+static void   dx_dinput_dispose                 (GObject        *object);
+static void   dx_dinput_finalize                (GObject        *object);
+static void   dx_dinput_set_property            (GObject        *object,
+                                                 guint           property_id,
+                                                 const GValue   *value,
+                                                 GParamSpec     *pspec);
+static void   dx_dinput_get_property            (GObject        *object,
+                                                 guint           property_id,
+                                                 GValue         *value,
+                                                 GParamSpec     *pspec);
+
+static gint          dx_dinput_get_n_events     (GimpController *controller);
+static const gchar * dx_dinput_get_event_name   (GimpController *controller,
+                                                 gint            event_id);
+static const gchar * dx_dinput_get_event_blurb  (GimpController *controller,
+                                                 gint            event_id);
+
+static void          dx_dinput_device_changed   (ControllerDXDInput *controller,
+                                                 const gchar        *guid);
+static gboolean      dx_dinput_set_device       (ControllerDXDInput *controller,
+                                                 const gchar        *guid);
+
+
+static const GimpModuleInfo dx_dinput_info =
+{
+  GIMP_MODULE_ABI_VERSION,
+  N_("DirectX DirectInput event controller"),
+  "Tor Lillqvist <tml@iki.fi>",
+  "v0.1",
+  "(c) 2004-2007, released under the GPL",
+  "2004-2007"
+};
+
+
+G_DEFINE_DYNAMIC_TYPE (ControllerDXDInput, controller_dx_dinput,
+                       GIMP_TYPE_CONTROLLER)
+
+
+G_MODULE_EXPORT const GimpModuleInfo *
+gimp_module_query (GTypeModule *module)
+{
+  return &dx_dinput_info;
+}
+
+G_MODULE_EXPORT gboolean
+gimp_module_register (GTypeModule *module)
+{
+  gimp_input_device_store_register_types (module);
+  controller_dx_dinput_register_type (module);
+
+  return TRUE;
+}
+
+static void
+controller_dx_dinput_class_init (ControllerDXDInputClass *klass)
+{
+  GimpControllerClass *controller_class = GIMP_CONTROLLER_CLASS (klass);
+  GObjectClass        *object_class     = G_OBJECT_CLASS (klass);
+
+  object_class->dispose            = dx_dinput_dispose;
+  object_class->finalize           = dx_dinput_finalize;
+  object_class->get_property       = dx_dinput_get_property;
+  object_class->set_property       = dx_dinput_set_property;
+
+  g_object_class_install_property (object_class, PROP_DEVICE,
+                                   g_param_spec_string ("device",
+                                                        _("Device:"),
+                                                        _("The device to read DirectInput events from."),
+                                                        NULL,
+                                                        GIMP_CONFIG_PARAM_FLAGS));
+  g_object_class_install_property (object_class, PROP_DEVICE_STORE,
+                                   g_param_spec_object ("device-values",
+                                                        NULL, NULL,
+                                                        GIMP_TYPE_INPUT_DEVICE_STORE,
+                                                        G_PARAM_READABLE));
+
+  controller_class->name            = _("DirectX DirectInput");
+  controller_class->help_id         = "gimp-controller-directx-directinput";
+  controller_class->icon_name       = GIMP_ICON_CONTROLLER_LINUX_INPUT;
+
+  controller_class->get_n_events    = dx_dinput_get_n_events;
+  controller_class->get_event_name  = dx_dinput_get_event_name;
+  controller_class->get_event_blurb = dx_dinput_get_event_blurb;
+}
+
+static void
+controller_dx_dinput_class_finalize (ControllerDXDInputClass *klass)
+{
+}
+
+static void
+controller_dx_dinput_init (ControllerDXDInput *controller)
+{
+  controller->store = gimp_input_device_store_new ();
+
+  if (controller->store)
+    {
+      g_signal_connect_swapped (controller->store, "device-added",
+                                G_CALLBACK (dx_dinput_device_changed),
+                                controller);
+      g_signal_connect_swapped (controller->store, "device-removed",
+                                G_CALLBACK (dx_dinput_device_changed),
+                                controller);
+    }
+}
+
+static void
+dx_dinput_dispose (GObject *object)
+{
+  ControllerDXDInput *controller = CONTROLLER_DX_DINPUT (object);
+
+  dx_dinput_set_device (controller, NULL);
+
+  G_OBJECT_CLASS (controller_dx_dinput_parent_class)->dispose (object);
+}
+
+static void
+dx_dinput_finalize (GObject *object)
+{
+  ControllerDXDInput *controller = CONTROLLER_DX_DINPUT (object);
+
+  if (controller->source != NULL)
+    {
+      g_source_remove_poll (controller->source, controller->pollfd);
+      g_source_remove (g_source_get_id (controller->source));
+      g_source_unref (controller->source);
+    }
+
+  if (controller->didevice8)
+    IDirectInputDevice8_SetEventNotification (controller->didevice8, NULL);
+
+  if (controller->format != NULL)
+    {
+      g_free (controller->format->rgodf);
+      g_free (controller->format);
+      controller->format = NULL;
+    }
+
+  g_free (controller->prevdata);
+  controller->prevdata = NULL;
+
+  if (controller->event != NULL)
+    {
+      CloseHandle (controller->event);
+      controller->event = 0;
+    }
+
+  if (controller->store)
+    {
+      g_object_unref (controller->store);
+      controller->store = NULL;
+    }
+
+  G_OBJECT_CLASS (controller_dx_dinput_parent_class)->finalize (object);
+}
+
+static void
+dx_dinput_set_property (GObject      *object,
+                        guint         property_id,
+                        const GValue *value,
+                        GParamSpec   *pspec)
+{
+  ControllerDXDInput *controller = CONTROLLER_DX_DINPUT (object);
+
+  switch (property_id)
+    {
+    case PROP_DEVICE:
+      dx_dinput_set_device (controller, g_value_get_string (value));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+dx_dinput_get_property (GObject    *object,
+                        guint       property_id,
+                        GValue     *value,
+                        GParamSpec *pspec)
+{
+  ControllerDXDInput *controller = CONTROLLER_DX_DINPUT (object);
+
+  switch (property_id)
+    {
+    case PROP_DEVICE:
+      g_value_set_string (value, controller->guid);
+      break;
+    case PROP_DEVICE_STORE:
+      g_value_set_object (value, controller->store);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static gint
+dx_dinput_get_n_events (GimpController *controller)
+{
+  ControllerDXDInput *cdxdi = (ControllerDXDInput *) controller;
+
+  return cdxdi->num_events;
+}
+
+static const gchar *
+dx_dinput_get_event_name (GimpController *controller,
+                          gint            event_id)
+{
+  ControllerDXDInput *cdxdi = (ControllerDXDInput *) controller;
+
+  if (event_id < 0 || event_id >= cdxdi->num_events)
+    return NULL;
+
+  return cdxdi->event_names[event_id];
+}
+
+static const gchar *
+dx_dinput_get_event_blurb (GimpController *controller,
+                           gint            event_id)
+{
+  ControllerDXDInput *cdxdi = (ControllerDXDInput *) controller;
+
+  if (event_id < 0 || event_id >= cdxdi->num_events)
+    return NULL;
+
+  return cdxdi->event_blurbs[event_id];
+}
+
+static BOOL CALLBACK
+count_objects (const DIDEVICEOBJECTINSTANCEW *doi,
+               void                          *user_data)
+{
+  ControllerDXDInput *controller = (ControllerDXDInput *) user_data;
+  HRESULT             hresult;
+  DIPROPRANGE         range;
+
+  if (doi->dwType & DIDFT_AXIS)
+    {
+      /* Set reported range to  physical range, not to give upper
+       * level software any false impression of higher accuracy.
+       */
+
+      range.diph.dwSize = sizeof (DIPROPRANGE);
+      range.diph.dwHeaderSize = sizeof (DIPROPHEADER);
+      range.diph.dwObj = doi->dwType;
+      range.diph.dwHow = DIPH_BYID;
+
+      if (FAILED ((hresult = IDirectInputDevice8_GetProperty (controller->didevice8,
+                                                              DIPROP_PHYSICALRANGE,
+                                                              &range.diph))))
+        g_warning ("IDirectInputDevice8::GetProperty failed: %s",
+                   g_win32_error_message (hresult));
+      else
+        {
+          if (FAILED ((hresult = IDirectInputDevice8_SetProperty (controller->didevice8,
+                                                                  DIPROP_RANGE,
+                                                                  &range.diph))))
+            g_warning ("IDirectInputDevice8::SetProperty failed: %s",
+                       g_win32_error_message (hresult));
+        }
+    }
+
+  if (IsEqualGUID (&doi->guidType, &GUID_Button))
+    controller->num_buttons++;
+  else if (IsEqualGUID (&doi->guidType, &GUID_XAxis) ||
+           IsEqualGUID (&doi->guidType, &GUID_YAxis) ||
+           IsEqualGUID (&doi->guidType, &GUID_ZAxis) ||
+           IsEqualGUID (&doi->guidType, &GUID_RxAxis) ||
+           IsEqualGUID (&doi->guidType, &GUID_RyAxis) ||
+           IsEqualGUID (&doi->guidType, &GUID_RzAxis))
+    controller->num_axes++;
+  else if (IsEqualGUID (&doi->guidType, &GUID_Slider))
+    controller->num_sliders++;
+  else if (IsEqualGUID (&doi->guidType, &GUID_POV))
+    controller->num_povs++;
+
+  return DIENUM_CONTINUE;
+}
+
+static BOOL CALLBACK
+name_objects (const DIDEVICEOBJECTINSTANCEW *doi,
+              void                          *user_data)
+{
+  ControllerDXDInput *controller = (ControllerDXDInput *) user_data;
+
+  if (IsEqualGUID (&doi->guidType, &GUID_Button))
+    {
+      controller->event_names[controller->bei] = g_strdup_printf ("button-%d", controller->bi);
+      controller->event_blurbs[controller->bei] = g_strdup_printf (_("Button %d"), controller->bi);
+      controller->bei++;
+      controller->event_names[controller->bei] = g_strdup_printf ("button-%d-press", controller->bi);
+      controller->event_blurbs[controller->bei] = g_strdup_printf (_("Button %d Press"), controller->bi);
+      controller->bei++;
+      controller->event_names[controller->bei] = g_strdup_printf ("button-%d-release", controller->bi);
+      controller->event_blurbs[controller->bei] = g_strdup_printf (_("Button %d Release"), controller->bi);
+      controller->bei++;
+
+      g_assert (controller->bi < controller->num_buttons);
+
+      controller->bi++;
+    }
+  else if (IsEqualGUID (&doi->guidType, &GUID_XAxis) ||
+           IsEqualGUID (&doi->guidType, &GUID_YAxis) ||
+           IsEqualGUID (&doi->guidType, &GUID_ZAxis) ||
+           IsEqualGUID (&doi->guidType, &GUID_RxAxis) ||
+           IsEqualGUID (&doi->guidType, &GUID_RyAxis) ||
+           IsEqualGUID (&doi->guidType, &GUID_RzAxis))
+    {
+      if (IsEqualGUID (&doi->guidType, &GUID_XAxis))
+        {
+          controller->event_names[controller->aei] = g_strdup ("x-move-left");
+          controller->event_blurbs[controller->aei] = g_strdup (_("X Move Left"));
+          controller->aei++;
+          controller->event_names[controller->aei] = g_strdup ("x-move-right");
+          controller->event_blurbs[controller->aei] = g_strdup (_("X Move Right"));
+          controller->aei++;
+        }
+      else if (IsEqualGUID (&doi->guidType, &GUID_YAxis))
+        {
+          controller->event_names[controller->aei] = g_strdup ("y-move-away");
+          controller->event_blurbs[controller->aei] = g_strdup (_("Y Move Away"));
+          controller->aei++;
+          controller->event_names[controller->aei] = g_strdup ("y-move-near");
+          controller->event_blurbs[controller->aei] = g_strdup (_("Y Move Near"));
+          controller->aei++;
+        }
+      else if (IsEqualGUID (&doi->guidType, &GUID_ZAxis))
+        {
+          controller->event_names[controller->aei] = g_strdup ("z-move-up");
+          controller->event_blurbs[controller->aei] = g_strdup (_("Z Move Up"));
+          controller->aei++;
+          controller->event_names[controller->aei] = g_strdup ("z-move-down");
+          controller->event_blurbs[controller->aei] = g_strdup (_("Z Move Down"));
+          controller->aei++;
+        }
+      else if (IsEqualGUID (&doi->guidType, &GUID_RxAxis))
+        {
+          controller->event_names[controller->aei] = g_strdup ("x-axis-tilt-away");
+          controller->event_blurbs[controller->aei] = g_strdup (_("X Axis Tilt Away"));
+          controller->aei++;
+          controller->event_names[controller->aei] = g_strdup ("x-axis-tilt-near");
+          controller->event_blurbs[controller->aei] = g_strdup (_("X Axis Tilt Near"));
+          controller->aei++;
+        }
+      else if (IsEqualGUID (&doi->guidType, &GUID_RyAxis))
+        {
+          controller->event_names[controller->aei] = g_strdup ("y-axis-tilt-right");
+          controller->event_blurbs[controller->aei] = g_strdup (_("Y Axis Tilt Right"));
+          controller->aei++;
+          controller->event_names[controller->aei] = g_strdup ("y-axis-tilt-left");
+          controller->event_blurbs[controller->aei] = g_strdup (_("Y Axis Tilt Left"));
+          controller->aei++;
+        }
+      else if (IsEqualGUID (&doi->guidType, &GUID_RzAxis))
+        {
+          controller->event_names[controller->aei] = g_strdup ("z-axis-turn-left");
+          controller->event_blurbs[controller->aei] = g_strdup (_("Z Axis Turn Left"));
+          controller->aei++;
+          controller->event_names[controller->aei] = g_strdup ("z-axis-turn-right");
+          controller->event_blurbs[controller->aei] = g_strdup (_("Z Axis Turn Right"));
+          controller->aei++;
+        }
+
+      g_assert (controller->ai < controller->num_axes);
+
+      controller->ai++;
+    }
+  else if (IsEqualGUID (&doi->guidType, &GUID_Slider))
+    {
+      controller->event_names[controller->sei] = g_strdup_printf ("slider-%d-increase", controller->si);
+      controller->event_blurbs[controller->sei] = g_strdup_printf (_("Slider %d Increase"), controller->si);
+      controller->sei++;
+      controller->event_names[controller->sei] = g_strdup_printf ("slider-%d-decrease", controller->si);
+      controller->event_blurbs[controller->sei] = g_strdup_printf (_("Slider %d Decrease"), controller->si);
+      controller->sei++;
+
+      g_assert (controller->si < controller->num_sliders);
+
+      controller->si++;
+    }
+  else if (IsEqualGUID (&doi->guidType, &GUID_POV))
+    {
+      controller->event_names[controller->pei] = g_strdup_printf ("pov-%d-x-view", controller->pi);
+      controller->event_blurbs[controller->pei] = g_strdup_printf (_("POV %d X View"), controller->pi);
+      controller->pei++;
+      controller->event_names[controller->pei] = g_strdup_printf ("pov-%d-y-view", controller->pi);
+      controller->event_blurbs[controller->pei] = g_strdup_printf (_("POV %d Y View"), controller->pi);
+      controller->pei++;
+      controller->event_names[controller->pei] = g_strdup_printf ("pov-%d-x-return", controller->pi);
+      controller->event_blurbs[controller->pei] = g_strdup_printf (_("POV %d Return"), controller->pi);
+      controller->pei++;
+
+      g_assert (controller->pi < controller->num_povs);
+
+      controller->pi++;
+    }
+
+  return DIENUM_CONTINUE;
+}
+
+static gboolean
+dx_dinput_get_device_info (ControllerDXDInput *controller,
+                           GError            **error)
+{
+  HRESULT hresult;
+
+  controller->num_buttons =
+    controller->num_axes =
+    controller->num_sliders =
+    controller->num_povs = 0;
+
+  if (FAILED ((hresult = IDirectInputDevice8_EnumObjects (controller->didevice8,
+                                                          count_objects,
+                                                          controller,
+                                                          DIDFT_AXIS|
+                                                          DIDFT_BUTTON|
+                                                          DIDFT_POV|
+                                                          DIDFT_PSHBUTTON|
+                                                          DIDFT_RELAXIS|
+                                                          DIDFT_TGLBUTTON))))
+    {
+      g_set_error (error, GIMP_MODULE_ERROR, GIMP_MODULE_FAILED,
+                   "IDirectInputDevice8::EnumObjects failed: %s",
+                   g_win32_error_message (hresult));
+      return FALSE;
+    }
+
+  controller->num_button_events = controller->num_buttons*NUM_EVENTS_PER_BUTTON;
+  controller->num_axis_events = controller->num_axes*NUM_EVENTS_PER_AXIS;
+  controller->num_slider_events = controller->num_sliders*NUM_EVENTS_PER_SLIDER;
+  controller->num_pov_events = controller->num_povs*NUM_EVENTS_PER_POV;
+
+  controller->num_events =
+    controller->num_button_events +
+    controller->num_axis_events +
+    controller->num_slider_events +
+    controller->num_pov_events;
+
+  controller->event_names = g_new (gchar *, controller->num_events);
+  controller->event_blurbs = g_new (gchar *, controller->num_events);
+
+  controller->bi = controller->ai = controller->si = controller->pi = 0;
+
+  controller->bei = 0;
+  controller->aei = controller->bei + controller->num_button_events;
+  controller->sei = controller->aei + controller->num_axis_events;
+  controller->pei = controller->sei + controller->num_slider_events;
+
+  if (FAILED ((hresult = IDirectInputDevice8_EnumObjects (controller->didevice8,
+                                                          name_objects,
+                                                          controller,
+                                                          DIDFT_AXIS|
+                                                          DIDFT_BUTTON|
+                                                          DIDFT_POV|
+                                                          DIDFT_PSHBUTTON|
+                                                          DIDFT_RELAXIS|
+                                                          DIDFT_TGLBUTTON))))
+    {
+      g_free (controller->event_names);
+      g_free (controller->event_blurbs);
+
+      g_set_error (error, GIMP_MODULE_ERROR, GIMP_MODULE_FAILED,
+                   "IDirectInputDevice8::EnumObjects failed: %s",
+                   g_win32_error_message (hresult));
+      return FALSE;
+    }
+
+
+  g_assert (controller->bei == controller->num_button_events);
+  g_assert (controller->aei == controller->bei + controller->num_axis_events);
+  g_assert (controller->sei == controller->aei + controller->num_slider_events);
+  g_assert (controller->pei == controller->sei + controller->num_pov_events);
+
+  return TRUE;
+}
+
+
+static void
+dx_dinput_device_changed (ControllerDXDInput *controller,
+                          const gchar        *guid)
+{
+  if (controller->guid && strcmp (guid, controller->guid) == 0)
+    {
+      dx_dinput_set_device (controller, guid);
+      g_object_notify (G_OBJECT (controller), "device");
+    }
+}
+
+static gboolean
+dx_dinput_event_prepare (GSource *source,
+                         gint    *timeout)
+{
+  *timeout = -1;
+
+  return FALSE;
+}
+
+static gboolean
+dx_dinput_event_check (GSource *source)
+{
+  DXDInputSource *input = (DXDInputSource *) source;
+
+  if (WaitForSingleObject (input->controller->event, 0) == WAIT_OBJECT_0)
+    {
+      ResetEvent (input->controller->event);
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static gboolean
+dx_dinput_event_dispatch (GSource     *source,
+                          GSourceFunc  callback,
+                          gpointer     user_data)
+{
+  ControllerDXDInput * const       input = ((DXDInputSource *) source)->controller;
+  GimpController                  *controller = &input->parent_instance;
+  const DIDATAFORMAT * const       format = input->format;
+  const DIOBJECTDATAFORMAT        *rgodf = format->rgodf;
+  guchar                          *data;
+  gint                             i;
+  GimpControllerEvent              cevent = { 0, };
+
+  data = g_alloca (format->dwDataSize);
+
+  if (FAILED (IDirectInputDevice8_GetDeviceState (input->didevice8,
+                                                  format->dwDataSize,
+                                                  data)))
+    {
+      return TRUE;
+    }
+
+  g_object_ref (controller);
+
+  for (i = 0; i < input->num_buttons; i++)
+    {
+      if (input->prevdata[rgodf->dwOfs] != data[rgodf->dwOfs])
+        {
+          if (data[rgodf->dwOfs] & 0x80)
+            {
+              /* Click event, compatibility with Linux Input */
+              cevent.any.type = GIMP_CONTROLLER_EVENT_TRIGGER;
+              cevent.any.source = controller;
+              cevent.any.event_id = i*NUM_EVENTS_PER_BUTTON;
+              gimp_controller_event (controller, &cevent);
+
+              /* Press event */
+              cevent.any.event_id = i*NUM_EVENTS_PER_BUTTON + 1;
+              gimp_controller_event (controller, &cevent);
+            }
+          else
+            {
+              /* Release event */
+              cevent.any.type = GIMP_CONTROLLER_EVENT_TRIGGER;
+              cevent.any.source = controller;
+              cevent.any.event_id = i*NUM_EVENTS_PER_BUTTON + 2;
+              gimp_controller_event (controller, &cevent);
+            }
+        }
+      rgodf++;
+    }
+
+  for (i = 0; i < input->num_axes; i++)
+    {
+      LONG *prev = (LONG *)(input->prevdata+rgodf->dwOfs);
+      LONG *curr = (LONG *)(data+rgodf->dwOfs);
+
+      if (ABS (*prev - *curr) > 1)
+        {
+          cevent.any.type = GIMP_CONTROLLER_EVENT_VALUE;
+          cevent.any.source = controller;
+          cevent.any.event_id =
+            input->num_button_events +
+            i*NUM_EVENTS_PER_AXIS;
+          g_value_init (&cevent.value.value, G_TYPE_DOUBLE);
+          if (*curr - *prev < 0)
+            {
+              g_value_set_double (&cevent.value.value, *prev - *curr);
+            }
+          else
+            {
+              cevent.any.event_id++;
+              g_value_set_double (&cevent.value.value, *curr - *prev);
+            }
+          gimp_controller_event (controller, &cevent);
+          g_value_unset (&cevent.value.value);
+        }
+      else
+        *curr = *prev;
+      rgodf++;
+    }
+
+  for (i = 0; i < input->num_sliders; i++)
+    {
+      LONG *prev = (LONG *)(input->prevdata+rgodf->dwOfs);
+      LONG *curr = (LONG *)(data+rgodf->dwOfs);
+
+      if (ABS (*prev - *curr) > 1)
+        {
+          cevent.any.type = GIMP_CONTROLLER_EVENT_VALUE;
+          cevent.any.source = controller;
+          cevent.any.event_id =
+            input->num_button_events +
+            input->num_axis_events +
+            i*NUM_EVENTS_PER_SLIDER;
+          g_value_init (&cevent.value.value, G_TYPE_DOUBLE);
+          if (*curr - *prev < 0)
+            {
+              g_value_set_double (&cevent.value.value, *prev - *curr);
+            }
+          else
+            {
+              cevent.any.event_id++;
+              g_value_set_double (&cevent.value.value, *curr - *prev);
+            }
+          gimp_controller_event (controller, &cevent);
+          g_value_unset (&cevent.value.value);
+        }
+      else
+        *curr = *prev;
+      rgodf++;
+    }
+
+  for (i = 0; i < input->num_povs; i++)
+    {
+      LONG prev = *((LONG *)(input->prevdata+rgodf->dwOfs));
+      LONG curr = *((LONG *)(data+rgodf->dwOfs));
+      double prevx, prevy;
+      double currx, curry;
+
+      if (prev != curr)
+        {
+          if (prev == -1)
+            {
+              prevx = 0.;
+              prevy = 0.;
+            }
+          else
+            {
+              prevx = sin (prev/36000.*2.*G_PI);
+              prevy = cos (prev/36000.*2.*G_PI);
+            }
+          if (curr == -1)
+            {
+              currx = 0.;
+              curry = 0.;
+            }
+          else
+            {
+              currx = sin (curr/36000.*2.*G_PI);
+              curry = cos (curr/36000.*2.*G_PI);
+            }
+
+          cevent.any.type = GIMP_CONTROLLER_EVENT_VALUE;
+          cevent.any.source = controller;
+          cevent.any.event_id =
+            input->num_button_events +
+            input->num_axis_events +
+            input->num_slider_events +
+            i*NUM_EVENTS_PER_POV;
+          g_value_init (&cevent.value.value, G_TYPE_DOUBLE);
+          g_value_set_double (&cevent.value.value, currx - prevx);
+          gimp_controller_event (controller, &cevent);
+          cevent.any.event_id++;
+          g_value_set_double (&cevent.value.value, curry - prevy);
+          gimp_controller_event (controller, &cevent);
+          g_value_unset (&cevent.value.value);
+          if (curr == -1)
+            {
+              cevent.any.type = GIMP_CONTROLLER_EVENT_TRIGGER;
+              cevent.any.event_id++;
+              gimp_controller_event (controller, &cevent);
+            }
+        }
+      rgodf++;
+    }
+
+  g_assert (rgodf == format->rgodf + format->dwNumObjs);
+
+  memmove (input->prevdata, data, format->dwDataSize);
+
+  g_object_unref (controller);
+
+  return TRUE;
+}
+
+static GSourceFuncs dx_dinput_event_funcs = {
+  dx_dinput_event_prepare,
+  dx_dinput_event_check,
+  dx_dinput_event_dispatch,
+  NULL
+};
+
+
+static void
+dump_data_format (const DIDATAFORMAT *format)
+{
+#ifdef GIMP_UNSTABLE
+  gint i;
+
+  g_print ("dwSize: %ld\n", format->dwSize);
+  g_print ("dwObjSize: %ld\n", format->dwObjSize);
+  g_print ("dwFlags: ");
+  if (format->dwFlags == DIDF_ABSAXIS)
+    g_print ("DIDF_ABSAXIS");
+  else if (format->dwFlags == DIDF_RELAXIS)
+    g_print ("DIDF_RELAXIS");
+  else
+    g_print ("%#lx", format->dwFlags);
+  g_print ("\n");
+  g_print ("dwDataSize: %ld\n", format->dwDataSize);
+  g_print ("dwNumObjs: %ld\n", format->dwNumObjs);
+
+  for (i = 0; i < format->dwNumObjs; i++)
+    {
+      const DIOBJECTDATAFORMAT *oformat = (DIOBJECTDATAFORMAT *) (((char *) format->rgodf) + i*format->dwObjSize);
+      unsigned char *guid;
+
+      g_print ("Object %d:\n", i);
+      if (oformat->pguid == NULL)
+        g_print ("  pguid: NULL\n");
+      else
+        {
+          UuidToString (oformat->pguid, &guid);
+          g_print ("  pguid: %s\n", guid);
+          RpcStringFree (&guid);
+        }
+
+      g_print ("  dwOfs: %ld\n", oformat->dwOfs);
+      g_print ("  dwType: ");
+      switch (DIDFT_GETTYPE (oformat->dwType))
+        {
+#define CASE(x) case DIDFT_##x: g_print ("DIDFT_"#x); break
+        CASE (RELAXIS);
+        CASE (ABSAXIS);
+        CASE (AXIS);
+        CASE (PSHBUTTON);
+        CASE (TGLBUTTON);
+        CASE (BUTTON);
+        CASE (POV);
+        CASE (COLLECTION);
+        CASE (NODATA);
+#undef CASE
+        default: g_print ("%#x", DIDFT_GETTYPE (oformat->dwType));
+        }
+      g_print (" ");
+      if (DIDFT_GETINSTANCE (oformat->dwType) == DIDFT_GETINSTANCE (DIDFT_ANYINSTANCE))
+        g_print ("ANYINSTANCE");
+      else
+        g_print ("#%d", DIDFT_GETINSTANCE (oformat->dwType));
+#define BIT(x) if (oformat->dwType & DIDFT_##x) g_print (" "#x)
+      BIT (FFACTUATOR);
+      BIT (FFEFFECTTRIGGER);
+      BIT (OUTPUT);
+      BIT (VENDORDEFINED);
+      BIT (ALIAS);
+      BIT (OPTIONAL);
+#undef BIT
+      g_print ("\n");
+      g_print ("  dwFlags:");
+      switch (oformat->dwFlags & DIDOI_ASPECTACCEL)
+        {
+        case DIDOI_ASPECTPOSITION: g_print (" DIDOI_ASPECTPOSITION"); break;
+        case DIDOI_ASPECTVELOCITY: g_print (" DIDOI_ASPECTVELOCITY"); break;
+        case DIDOI_ASPECTACCEL: g_print (" DIDOI_ASPECTACCEL"); break;
+        }
+      if (oformat->dwFlags & DIDOI_ASPECTFORCE)
+        g_print (" DIDOI_ASPECTFORCE");
+      g_print ("\n");
+    }
+#endif
+}
+
+static gboolean
+dx_dinput_setup_events (ControllerDXDInput *controller,
+                        GError            **error)
+{
+  HRESULT         hresult;
+  DIPROPDWORD     dword;
+  gint            i, k;
+  DXDInputSource *source;
+
+  if ((controller->event = CreateEvent (NULL, TRUE, FALSE, NULL)) == NULL)
+    {
+      g_set_error (error, GIMP_MODULE_ERROR, GIMP_MODULE_FAILED,
+                   "CreateEvent failed: %s",
+                   g_win32_error_message (GetLastError ()));
+      return FALSE;
+    }
+
+  controller->format = g_new (DIDATAFORMAT, 1);
+  controller->format->dwSize = sizeof (DIDATAFORMAT);
+  controller->format->dwObjSize = sizeof (DIOBJECTDATAFORMAT);
+
+  dword.diph.dwSize = sizeof (DIPROPDWORD);
+  dword.diph.dwHeaderSize = sizeof (DIPROPHEADER);
+  dword.diph.dwObj = 0;
+  dword.diph.dwHow = DIPH_DEVICE;
+
+  /* Get the axis mode so we can use the same in the format */
+  if (FAILED ((hresult = IDirectInputDevice8_GetProperty (controller->didevice8,
+                                                          DIPROP_AXISMODE,
+                                                          &dword.diph))))
+    {
+      g_set_error (error, GIMP_MODULE_ERROR, GIMP_MODULE_FAILED,
+                   "IDirectInputDevice8::GetParameters failed: %s",
+                   g_win32_error_message (hresult));
+      goto fail0;
+    }
+
+  controller->format->dwFlags = dword.dwData + 1;
+
+  controller->format->dwNumObjs =
+    controller->num_buttons +
+    controller->num_axes +
+    controller->num_sliders +
+    controller->num_povs;
+
+  controller->format->rgodf = g_new (DIOBJECTDATAFORMAT, controller->format->dwNumObjs);
+
+  k = 0;
+  controller->format->dwDataSize = 0;
+
+  for (i = 0; i < controller->num_buttons; i++)
+    {
+      controller->format->rgodf[k].pguid = NULL;
+      controller->format->rgodf[k].dwOfs = controller->format->dwDataSize;
+      controller->format->rgodf[k].dwType = DIDFT_BUTTON | DIDFT_MAKEINSTANCE (i);
+      controller->format->rgodf[k].dwFlags = 0;
+      controller->format->dwDataSize += 1;
+      k++;
+    }
+
+  controller->format->dwDataSize = 4*((controller->format->dwDataSize + 3)/4);
+
+  for (i = 0; i < controller->num_axes; i++)
+    {
+      controller->format->rgodf[k].pguid = NULL;
+      controller->format->rgodf[k].dwOfs = controller->format->dwDataSize;
+      controller->format->rgodf[k].dwType = DIDFT_AXIS | DIDFT_MAKEINSTANCE (i);
+      controller->format->rgodf[k].dwFlags = DIDOI_ASPECTPOSITION;
+      controller->format->dwDataSize += 4;
+      k++;
+    }
+
+  for (i = 0; i < controller->num_sliders; i++)
+    {
+      controller->format->rgodf[k].pguid = NULL;
+      controller->format->rgodf[k].dwOfs = controller->format->dwDataSize;
+      controller->format->rgodf[k].dwType = DIDFT_AXIS | DIDFT_MAKEINSTANCE (i);
+      controller->format->rgodf[k].dwFlags = DIDOI_ASPECTPOSITION;
+      controller->format->dwDataSize += 4;
+      k++;
+    }
+
+  for (i = 0; i < controller->num_povs; i++)
+    {
+      controller->format->rgodf[k].pguid = NULL;
+      controller->format->rgodf[k].dwOfs = controller->format->dwDataSize;
+      controller->format->rgodf[k].dwType = DIDFT_POV | DIDFT_MAKEINSTANCE (i);
+      controller->format->rgodf[k].dwFlags = 0;
+      controller->format->dwDataSize += 4;
+      k++;
+    }
+
+  g_assert (k == controller->format->dwNumObjs);
+
+  controller->format->dwDataSize = 4*((controller->format->dwDataSize + 3)/4);
+  controller->prevdata = g_malloc (controller->format->dwDataSize);
+
+  dump_data_format (controller->format);
+
+  if (FAILED ((hresult = IDirectInputDevice8_SetDataFormat (controller->didevice8,
+                                                            controller->format))))
+    {
+      g_set_error (error, GIMP_MODULE_ERROR, GIMP_MODULE_FAILED,
+                   "IDirectInputDevice8::SetDataFormat failed: %s",
+                   g_win32_error_message (hresult));
+      goto fail1;
+    }
+
+  if (FAILED ((hresult = IDirectInputDevice8_SetEventNotification (controller->didevice8,
+                                                                   controller->event))))
+    {
+      g_set_error (error, GIMP_MODULE_ERROR, GIMP_MODULE_FAILED,
+                   "IDirectInputDevice8::SetEventNotification failed: %s",
+                   g_win32_error_message (hresult));
+      goto fail2;
+    }
+
+  if (FAILED ((hresult = IDirectInputDevice8_Acquire (controller->didevice8))))
+    {
+      g_set_error (error, GIMP_MODULE_ERROR, GIMP_MODULE_FAILED,
+                   "IDirectInputDevice8::Acquire failed: %s",
+                   g_win32_error_message (hresult));
+      goto fail2;
+    }
+
+  if (FAILED ((hresult = IDirectInputDevice8_GetDeviceState (controller->didevice8,
+                                                             controller->format->dwDataSize,
+                                                             controller->prevdata))))
+    {
+      g_set_error (error, GIMP_MODULE_ERROR, GIMP_MODULE_FAILED,
+                   "IDirectInputDevice8::GetDeviceState failed: %s",
+                   g_win32_error_message (hresult));
+      goto fail2;
+    }
+
+  source = (DXDInputSource *) g_source_new (&dx_dinput_event_funcs,
+                                            sizeof (DXDInputSource));
+  source->controller = controller;
+  controller->source = (GSource *) source;
+
+  controller->pollfd = g_new (GPollFD, 1);
+
+  controller->pollfd->fd = (int) controller->event;
+  controller->pollfd->events = G_IO_IN;
+
+  g_source_add_poll (&source->source, controller->pollfd);
+  g_source_attach (&source->source, NULL);
+
+  return TRUE;
+
+ fail2:
+  IDirectInputDevice8_SetEventNotification (controller->didevice8, NULL);
+ fail1:
+  g_free (controller->format->rgodf);
+  g_free (controller->format);
+  controller->format = NULL;
+  g_free (controller->prevdata);
+  controller->prevdata = NULL;
+ fail0:
+  CloseHandle (controller->event);
+  controller->event = 0;
+
+  return FALSE;
+}
+
+static gboolean
+dx_dinput_set_device (ControllerDXDInput *controller,
+                      const gchar        *guid)
+{
+  GError *error = NULL;
+
+  if (controller->guid)
+    g_free (controller->guid);
+
+  controller->guid = g_strdup (guid);
+
+  g_object_set (controller, "name", _("DirectInput Events"), NULL);
+
+  if (controller->guid && strlen (controller->guid))
+    {
+      if (controller->store)
+        controller->didevice8 =
+          (LPDIRECTINPUTDEVICE8W) gimp_input_device_store_get_device_file (controller->store,
+                                                                           controller->guid);
+    }
+  else
+    {
+      g_object_set (controller, "state", _("No device configured"), NULL);
+
+      return FALSE;
+    }
+
+  if (controller->didevice8)
+    {
+      if (!dx_dinput_get_device_info (controller, &error) ||
+          !dx_dinput_setup_events (controller, &error))
+        {
+          g_object_set (controller, "state", error->message, NULL);
+          g_error_free (error);
+        }
+    }
+  else if (controller->store)
+    {
+      error = gimp_input_device_store_get_error (controller->store);
+
+      if (error)
+        {
+          g_object_set (controller, "state", error->message, NULL);
+          g_error_free (error);
+        }
+      else
+        {
+          g_object_set (controller, "state", _("Device not available"), NULL);
+        }
+    }
+
+  return FALSE;
+}
diff --git a/modules/controller-linux-input.c b/modules/controller-linux-input.c
new file mode 100644
index 0000000..760ccd8
--- /dev/null
+++ b/modules/controller-linux-input.c
@@ -0,0 +1,711 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
+ *
+ * controller_linux_input.c
+ * Copyright (C) 2004-2007 Sven Neumann <sven@gimp.org>
+ *                         Michael Natterer <mitch@gimp.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <linux/input.h>
+
+#include <glib/gstdio.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpconfig/gimpconfig.h"
+#include "libgimpmodule/gimpmodule.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#define GIMP_ENABLE_CONTROLLER_UNDER_CONSTRUCTION
+#include "libgimpwidgets/gimpcontroller.h"
+
+#include "gimpinputdevicestore.h"
+
+#include "libgimp/libgimp-intl.h"
+
+
+typedef struct
+{
+  guint16       code;
+  const gchar  *name;
+  const gchar  *blurb;
+} LinuxInputEvent;
+
+static const LinuxInputEvent key_events[] =
+{
+  { BTN_0,         "button-0",         N_("Button 0")         },
+  { BTN_1,         "button-1",         N_("Button 1")         },
+  { BTN_2,         "button-2",         N_("Button 2")         },
+  { BTN_3,         "button-3",         N_("Button 3")         },
+  { BTN_4,         "button-4",         N_("Button 4")         },
+  { BTN_5,         "button-5",         N_("Button 5")         },
+  { BTN_6,         "button-6",         N_("Button 6")         },
+  { BTN_7,         "button-7",         N_("Button 7")         },
+  { BTN_8,         "button-8",         N_("Button 8")         },
+  { BTN_9,         "button-9",         N_("Button 9")         },
+  { BTN_MOUSE,     "button-mouse",     N_("Button Mouse")     },
+  { BTN_LEFT,      "button-left",      N_("Button Left")      },
+  { BTN_RIGHT,     "button-right",     N_("Button Right")     },
+  { BTN_MIDDLE,    "button-middle",    N_("Button Middle")    },
+  { BTN_SIDE,      "button-side",      N_("Button Side")      },
+  { BTN_EXTRA,     "button-extra",     N_("Button Extra")     },
+  { BTN_FORWARD,   "button-forward",   N_("Button Forward")   },
+  { BTN_BACK,      "button-back",      N_("Button Back")      },
+  { BTN_TASK,      "button-task",      N_("Button Task")      },
+#ifdef BTN_WHEEL
+  { BTN_WHEEL,     "button-wheel",     N_("Button Wheel")     },
+#endif
+#ifdef BTN_GEAR_DOWN
+  { BTN_GEAR_DOWN, "button-gear-down", N_("Button Gear Down") },
+#endif
+#ifdef BTN_GEAR_UP
+  { BTN_GEAR_UP,   "button-gear-up",   N_("Button Gear Up")   }
+#endif
+};
+
+static const LinuxInputEvent rel_events[] =
+{
+  { REL_X,      "x-move-left",                   N_("X Move Left")               },
+  { REL_X,      "x-move-right",                  N_("X Move Right")              },
+  { REL_Y,      "y-move-forward",                N_("Y Move Forward")            },
+  { REL_Y,      "y-move-back",                   N_("Y Move Back")               },
+  { REL_Z,      "z-move-up",                     N_("Z Move Up")                 },
+  { REL_Z,      "z-move-down",                   N_("Z Move Down")               },
+#ifdef REL_RX
+  { REL_RX,     "x-axis-tilt-forward",           N_("X Axis Tilt Forward")       },
+  { REL_RX,     "x-axis-tilt-back",              N_("X Axis Tilt Back")          },
+  { REL_RY,     "y-axis-tilt-right",             N_("Y Axis Tilt Right")         },
+  { REL_RY,     "y-axis-tilt-left",              N_("Y Axis Tilt Left")          },
+  { REL_RZ,     "z-axis-turn-left",              N_("Z Axis Turn Left")          },
+  { REL_RZ,     "z-axis-turn-right",             N_("Z Axis Turn Right")         },
+#endif  /* REL_RX */
+  { REL_HWHEEL, "horizontal-wheel-turn-back",    N_("Horiz. Wheel Turn Back")    },
+  { REL_HWHEEL, "horizontal-wheel-turn-forward", N_("Horiz. Wheel Turn Forward") },
+  { REL_DIAL,   "dial-turn-left",                N_("Dial Turn Left")            },
+  { REL_DIAL,   "dial-turn-right",               N_("Dial Turn Right")           },
+  { REL_WHEEL,  "wheel-turn-left",               N_("Wheel Turn Left")           },
+  { REL_WHEEL,  "wheel-turn-right",              N_("Wheel Turn Right")          },
+};
+
+
+enum
+{
+  PROP_0,
+  PROP_DEVICE,
+  PROP_DEVICE_STORE
+};
+
+
+#define CONTROLLER_TYPE_LINUX_INPUT            (controller_linux_input_get_type ())
+#define CONTROLLER_LINUX_INPUT(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), CONTROLLER_TYPE_LINUX_INPUT, ControllerLinuxInput))
+#define CONTROLLER_LINUX_INPUT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), CONTROLLER_TYPE_LINUX_INPUT, ControllerLinuxInputClass))
+#define CONTROLLER_IS_LINUX_INPUT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CONTROLLER_TYPE_LINUX_INPUT))
+#define CONTROLLER_IS_LINUX_INPUT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CONTROLLER_TYPE_LINUX_INPUT))
+
+
+typedef struct _ControllerLinuxInput      ControllerLinuxInput;
+typedef struct _ControllerLinuxInputClass ControllerLinuxInputClass;
+
+struct _ControllerLinuxInput
+{
+  GimpController        parent_instance;
+
+  GimpInputDeviceStore *store;
+  gchar                *device;
+  GIOChannel           *io;
+  guint                 io_id;
+};
+
+struct _ControllerLinuxInputClass
+{
+  GimpControllerClass  parent_class;
+};
+
+
+static GType  controller_linux_input_get_type     (void);
+
+static void   linux_input_dispose                 (GObject        *object);
+static void   linux_input_finalize                (GObject        *object);
+static void   linux_input_set_property            (GObject        *object,
+                                                   guint           property_id,
+                                                   const GValue   *value,
+                                                   GParamSpec     *pspec);
+static void   linux_input_get_property            (GObject        *object,
+                                                   guint           property_id,
+                                                   GValue         *value,
+                                                   GParamSpec     *pspec);
+
+static gint          linux_input_get_n_events     (GimpController *controller);
+static const gchar * linux_input_get_event_name   (GimpController *controller,
+                                                   gint            event_id);
+static const gchar * linux_input_get_event_blurb  (GimpController *controller,
+                                                   gint            event_id);
+
+static void          linux_input_device_changed   (ControllerLinuxInput *controller,
+                                                   const gchar          *udi);
+static gboolean      linux_input_set_device       (ControllerLinuxInput *controller,
+                                                   const gchar          *device);
+static gboolean      linux_input_read_event       (GIOChannel           *io,
+                                                   GIOCondition          cond,
+                                                   gpointer              data);
+
+
+static const GimpModuleInfo linux_input_info =
+{
+  GIMP_MODULE_ABI_VERSION,
+  N_("Linux input event controller"),
+  "Sven Neumann <sven@gimp.org>, Michael Natterer <mitch@gimp.org>",
+  "v0.2",
+  "(c) 2004-2007, released under the GPL",
+  "2004-2007"
+};
+
+
+G_DEFINE_DYNAMIC_TYPE (ControllerLinuxInput, controller_linux_input,
+                       GIMP_TYPE_CONTROLLER)
+
+
+G_MODULE_EXPORT const GimpModuleInfo *
+gimp_module_query (GTypeModule *module)
+{
+  return &linux_input_info;
+}
+
+G_MODULE_EXPORT gboolean
+gimp_module_register (GTypeModule *module)
+{
+  gimp_input_device_store_register_types (module);
+  controller_linux_input_register_type (module);
+
+  return TRUE;
+}
+
+static void
+controller_linux_input_class_init (ControllerLinuxInputClass *klass)
+{
+  GimpControllerClass *controller_class = GIMP_CONTROLLER_CLASS (klass);
+  GObjectClass        *object_class     = G_OBJECT_CLASS (klass);
+
+  object_class->dispose            = linux_input_dispose;
+  object_class->finalize           = linux_input_finalize;
+  object_class->get_property       = linux_input_get_property;
+  object_class->set_property       = linux_input_set_property;
+
+  g_object_class_install_property (object_class, PROP_DEVICE,
+                                   g_param_spec_string ("device",
+                                                        _("Device:"),
+                                                        _("The name of the device to read Linux Input events from."),
+                                                        NULL,
+                                                        GIMP_CONFIG_PARAM_FLAGS));
+#ifdef HAVE_LIBGUDEV
+  g_object_class_install_property (object_class, PROP_DEVICE_STORE,
+                                   g_param_spec_object ("device-values",
+                                                        NULL, NULL,
+                                                        GIMP_TYPE_INPUT_DEVICE_STORE,
+                                                        G_PARAM_READABLE));
+#endif
+
+  controller_class->name            = _("Linux Input");
+  controller_class->help_id         = "gimp-controller-linux-input";
+  controller_class->icon_name       = GIMP_ICON_CONTROLLER_LINUX_INPUT;
+
+  controller_class->get_n_events    = linux_input_get_n_events;
+  controller_class->get_event_name  = linux_input_get_event_name;
+  controller_class->get_event_blurb = linux_input_get_event_blurb;
+}
+
+static void
+controller_linux_input_class_finalize (ControllerLinuxInputClass *klass)
+{
+}
+
+static void
+controller_linux_input_init (ControllerLinuxInput *controller)
+{
+  controller->store = gimp_input_device_store_new ();
+
+  if (controller->store)
+    {
+      g_signal_connect_swapped (controller->store, "device-added",
+                                G_CALLBACK (linux_input_device_changed),
+                                controller);
+      g_signal_connect_swapped (controller->store, "device-removed",
+                                G_CALLBACK (linux_input_device_changed),
+                                controller);
+    }
+}
+
+static void
+linux_input_dispose (GObject *object)
+{
+  ControllerLinuxInput *controller = CONTROLLER_LINUX_INPUT (object);
+
+  linux_input_set_device (controller, NULL);
+
+  G_OBJECT_CLASS (controller_linux_input_parent_class)->dispose (object);
+}
+
+static void
+linux_input_finalize (GObject *object)
+{
+  ControllerLinuxInput *controller = CONTROLLER_LINUX_INPUT (object);
+
+  if (controller->store)
+    {
+      g_object_unref (controller->store);
+      controller->store = NULL;
+    }
+
+  G_OBJECT_CLASS (controller_linux_input_parent_class)->finalize (object);
+}
+
+static void
+linux_input_set_property (GObject      *object,
+                          guint         property_id,
+                          const GValue *value,
+                          GParamSpec   *pspec)
+{
+  ControllerLinuxInput *controller = CONTROLLER_LINUX_INPUT (object);
+
+  switch (property_id)
+    {
+    case PROP_DEVICE:
+      linux_input_set_device (controller, g_value_get_string (value));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+linux_input_get_property (GObject    *object,
+                          guint       property_id,
+                          GValue     *value,
+                          GParamSpec *pspec)
+{
+  ControllerLinuxInput *controller = CONTROLLER_LINUX_INPUT (object);
+
+  switch (property_id)
+    {
+    case PROP_DEVICE:
+      g_value_set_string (value, controller->device);
+      break;
+    case PROP_DEVICE_STORE:
+      g_value_set_object (value, controller->store);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static gint
+linux_input_get_n_events (GimpController *controller)
+{
+  return G_N_ELEMENTS (key_events) + G_N_ELEMENTS (rel_events);
+}
+
+static const gchar *
+linux_input_get_event_name (GimpController *controller,
+                            gint            event_id)
+{
+  if (event_id < 0)
+    {
+      return NULL;
+    }
+  else if (event_id < G_N_ELEMENTS (key_events))
+    {
+      return key_events[event_id].name;
+    }
+  else if (event_id < linux_input_get_n_events (controller))
+    {
+      return rel_events[event_id - G_N_ELEMENTS (key_events)].name;
+    }
+  else
+    {
+      return NULL;
+    }
+}
+
+static const gchar *
+linux_input_get_event_blurb (GimpController *controller,
+                             gint            event_id)
+{
+  if (event_id < 0)
+    {
+      return NULL;
+    }
+  else if (event_id < G_N_ELEMENTS (key_events))
+    {
+      return gettext (key_events[event_id].blurb);
+    }
+  else if (event_id < linux_input_get_n_events (controller))
+    {
+      return gettext (rel_events[event_id - G_N_ELEMENTS (key_events)].blurb);
+    }
+  else
+    {
+      return NULL;
+    }
+}
+
+#define BITS_PER_LONG        (sizeof(long) * 8)
+#define NBITS(x)             ((((x)-1)/BITS_PER_LONG)+1)
+#define OFF(x)               ((x)%BITS_PER_LONG)
+#define BIT(x)               (1UL<<OFF(x))
+#define LONG(x)              ((x)/BITS_PER_LONG)
+#define test_bit(bit, array) ((array[LONG(bit)] >> OFF(bit)) & 1)
+
+static void
+linux_input_get_device_info (ControllerLinuxInput *controller,
+                             int                   fd)
+{
+  unsigned long evbit[NBITS (EV_MAX)];
+  unsigned long keybit[NBITS (KEY_MAX)];
+  unsigned long relbit[NBITS (REL_MAX)];
+  unsigned long absbit[NBITS (ABS_MAX)];
+
+  gint num_keys     = 0;
+  gint num_ext_keys = 0;
+  gint num_buttons  = 0;
+  gint num_rels     = 0;
+  gint num_abs      = 0;
+
+  /* get event type bits */
+  ioctl (fd, EVIOCGBIT (0, EV_MAX), evbit);
+
+  if (test_bit (EV_KEY, evbit))
+    {
+      gint i;
+
+      /* get keyboard bits */
+      ioctl (fd, EVIOCGBIT (EV_KEY, KEY_MAX), keybit);
+
+      /**  count typical keyboard keys only */
+      for (i = KEY_Q; i < KEY_M; i++)
+        if (test_bit (i, keybit))
+          {
+            num_keys++;
+
+            g_print ("%s: key 0x%02x present\n", G_STRFUNC, i);
+          }
+
+      g_print ("%s: #keys = %d\n", G_STRFUNC, num_keys);
+
+      for (i = KEY_OK; i < KEY_MAX; i++)
+        if (test_bit (i, keybit))
+          {
+            num_ext_keys++;
+
+            g_print ("%s: ext key 0x%02x present\n", G_STRFUNC, i);
+          }
+
+      g_print ("%s: #ext_keys = %d\n", G_STRFUNC, num_ext_keys);
+
+      for (i = BTN_MISC; i < KEY_OK; i++)
+        if (test_bit (i, keybit))
+          {
+            num_buttons++;
+
+            g_print ("%s: button 0x%02x present\n", G_STRFUNC, i);
+          }
+
+      g_print ("%s: #buttons = %d\n", G_STRFUNC, num_buttons);
+    }
+
+  if (test_bit (EV_REL, evbit))
+    {
+      gint i;
+
+      /* get bits for relative axes */
+      ioctl (fd, EVIOCGBIT (EV_REL, REL_MAX), relbit);
+
+      for (i = 0; i < REL_MAX; i++)
+        if (test_bit (i, relbit))
+          {
+            num_rels++;
+
+            g_print ("%s: rel 0x%02x present\n", G_STRFUNC, i);
+          }
+
+      g_print ("%s: #rels = %d\n", G_STRFUNC, num_rels);
+    }
+
+  if (test_bit (EV_ABS, evbit))
+    {
+      gint i;
+
+      /* get bits for absolute axes */
+      ioctl (fd, EVIOCGBIT (EV_ABS, ABS_MAX), absbit);
+
+      for (i = 0; i < ABS_MAX; i++)
+        if (test_bit (i, absbit))
+          {
+            struct input_absinfo absinfo;
+
+            num_abs++;
+
+            /* get info for the absolute axis */
+            ioctl (fd, EVIOCGABS (i), &absinfo);
+
+            g_print ("%s: abs 0x%02x present [%d..%d]\n", G_STRFUNC, i,
+                     absinfo.minimum, absinfo.maximum);
+          }
+
+      g_print ("%s: #abs = %d\n", G_STRFUNC, num_abs);
+    }
+}
+
+static void
+linux_input_device_changed (ControllerLinuxInput *controller,
+                            const gchar          *identifier)
+{
+  if (controller->device && strcmp (identifier, controller->device) == 0)
+    {
+      linux_input_set_device (controller, identifier);
+      g_object_notify (G_OBJECT (controller), "device");
+    }
+}
+
+static gboolean
+linux_input_set_device (ControllerLinuxInput *controller,
+                        const gchar          *device)
+{
+  gchar *filename;
+
+  if (controller->io)
+    {
+      g_source_remove (controller->io_id);
+      controller->io_id = 0;
+
+      g_io_channel_unref (controller->io);
+      controller->io = NULL;
+    }
+
+  if (controller->device)
+    g_free (controller->device);
+
+  controller->device = g_strdup (device);
+
+  g_object_set (controller, "name", _("Linux Input Events"), NULL);
+
+  if (controller->device && strlen (controller->device))
+    {
+      if (controller->store)
+        filename = gimp_input_device_store_get_device_file (controller->store,
+                                                            controller->device);
+      else
+        filename = g_strdup (controller->device);
+    }
+  else
+    {
+      g_object_set (controller, "state", _("No device configured"), NULL);
+
+      return FALSE;
+    }
+
+  if (filename)
+    {
+      gchar *state;
+      gint   fd;
+
+      fd = g_open (filename, O_RDONLY, 0);
+
+      if (fd >= 0)
+        {
+          gchar name[256];
+
+          name[0] = '\0';
+          if (ioctl (fd, EVIOCGNAME (sizeof (name)), name) >= 0 &&
+              strlen (name) > 0                                 &&
+              g_utf8_validate (name, -1, NULL))
+            {
+              g_object_set (controller, "name", name, NULL);
+            }
+
+          linux_input_get_device_info (controller, fd);
+
+          state = g_strdup_printf (_("Reading from %s"), filename);
+          g_object_set (controller, "state", state, NULL);
+          g_free (state);
+
+          g_free (filename);
+
+          controller->io = g_io_channel_unix_new (fd);
+          g_io_channel_set_close_on_unref (controller->io, TRUE);
+          g_io_channel_set_encoding (controller->io, NULL, NULL);
+
+          controller->io_id = g_io_add_watch (controller->io,
+                                              G_IO_IN,
+                                              linux_input_read_event,
+                                              controller);
+          return TRUE;
+        }
+      else
+        {
+          state = g_strdup_printf (_("Device not available: %s"),
+                                   g_strerror (errno));
+          g_object_set (controller, "state", state, NULL);
+          g_free (state);
+        }
+
+      g_free (filename);
+    }
+  else if (controller->store)
+    {
+      GError *error = gimp_input_device_store_get_error (controller->store);
+
+      if (error)
+        {
+          g_object_set (controller, "state", error->message, NULL);
+          g_error_free (error);
+        }
+      else
+        {
+          g_object_set (controller, "state", _("Device not available"), NULL);
+        }
+    }
+
+  return FALSE;
+}
+
+static gboolean
+linux_input_read_event (GIOChannel   *io,
+                        GIOCondition  cond,
+                        gpointer      data)
+{
+  ControllerLinuxInput *input = CONTROLLER_LINUX_INPUT (data);
+  GIOStatus             status;
+  GError               *error = NULL;
+  struct input_event    ev;
+  gsize                 n_bytes;
+
+  status = g_io_channel_read_chars (io,
+                                    (gchar *) &ev,
+                                    sizeof (struct input_event), &n_bytes,
+                                    &error);
+
+  switch (status)
+    {
+    case G_IO_STATUS_ERROR:
+    case G_IO_STATUS_EOF:
+      g_source_remove (input->io_id);
+      input->io_id = 0;
+
+      g_io_channel_unref (input->io);
+      input->io = NULL;
+
+      if (error)
+        {
+          gchar *state = g_strdup_printf (_("Device not available: %s"),
+                                          error->message);
+          g_object_set (input, "state", state, NULL);
+          g_free (state);
+
+          g_clear_error (&error);
+        }
+      else
+        {
+          g_object_set (input, "state", _("End of file"), NULL);
+        }
+      return FALSE;
+      break;
+
+    case G_IO_STATUS_AGAIN:
+      return TRUE;
+
+    default:
+      break;
+    }
+
+  if (n_bytes == sizeof (struct input_event))
+    {
+      GimpController      *controller = GIMP_CONTROLLER (data);
+      GimpControllerEvent  cevent     = { 0, };
+      gint                 i;
+
+      switch (ev.type)
+        {
+        case EV_KEY:
+          g_print ("%s: EV_KEY code = 0x%02x\n", G_STRFUNC, ev.code);
+
+          for (i = 0; i < G_N_ELEMENTS (key_events); i++)
+            if (ev.code == key_events[i].code)
+              {
+                cevent.any.type     = GIMP_CONTROLLER_EVENT_TRIGGER;
+                cevent.any.source   = controller;
+                cevent.any.event_id = i;
+
+                gimp_controller_event (controller, &cevent);
+
+                break;
+              }
+          break;
+
+        case EV_REL:
+          g_print ("%s: EV_REL code = 0x%02x (value = %d)\n", G_STRFUNC,
+                   ev.code, ev.value);
+
+          for (i = 0; i < G_N_ELEMENTS (rel_events); i++)
+            if (ev.code == rel_events[i].code)
+              {
+                cevent.any.type     = GIMP_CONTROLLER_EVENT_VALUE;
+                cevent.any.source   = controller;
+                cevent.any.event_id = G_N_ELEMENTS (key_events) + i;
+
+                g_value_init (&cevent.value.value, G_TYPE_DOUBLE);
+
+                if (ev.value < 0)
+                  {
+                    g_value_set_double (&cevent.value.value, -ev.value);
+                  }
+                else
+                  {
+                    cevent.any.event_id++;
+
+                    g_value_set_double (&cevent.value.value, ev.value);
+                  }
+
+                gimp_controller_event (controller, &cevent);
+
+                g_value_unset (&cevent.value.value);
+
+               break;
+              }
+          break;
+
+        case EV_ABS:
+          g_print ("%s: EV_ABS code = 0x%02x (value = %d)\n", G_STRFUNC,
+                   ev.code, ev.value);
+          break;
+
+        default:
+          break;
+        }
+    }
+
+  return TRUE;
+}
diff --git a/modules/controller-midi.c b/modules/controller-midi.c
new file mode 100644
index 0000000..284f02d
--- /dev/null
+++ b/modules/controller-midi.c
@@ -0,0 +1,893 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
+ *
+ * controller_midi.c
+ * Copyright (C) 2004-2007 Michael Natterer <mitch@gimp.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#define _GNU_SOURCE  /* the ALSA headers need this */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <time.h>
+
+#include <glib/gstdio.h>
+
+#ifdef HAVE_ALSA
+#include <alsa/asoundlib.h>
+#endif
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpconfig/gimpconfig.h"
+#include "libgimpmodule/gimpmodule.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#define GIMP_ENABLE_CONTROLLER_UNDER_CONSTRUCTION
+#include "libgimpwidgets/gimpcontroller.h"
+
+#include "libgimp/libgimp-intl.h"
+
+
+typedef struct
+{
+  gchar *name;
+  gchar *blurb;
+} MidiEvent;
+
+
+enum
+{
+  PROP_0,
+  PROP_DEVICE,
+  PROP_CHANNEL
+};
+
+
+#define CONTROLLER_TYPE_MIDI            (controller_midi_get_type ())
+#define CONTROLLER_MIDI(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), CONTROLLER_TYPE_MIDI, ControllerMidi))
+#define CONTROLLER_MIDI_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), CONTROLLER_TYPE_MIDI, ControllerMidiClass))
+#define CONTROLLER_IS_MIDI(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CONTROLLER_TYPE_MIDI))
+#define CONTROLLER_IS_MIDI_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CONTROLLER_TYPE_MIDI))
+
+
+typedef struct _ControllerMidi      ControllerMidi;
+typedef struct _ControllerMidiClass ControllerMidiClass;
+
+struct _ControllerMidi
+{
+  GimpController  parent_instance;
+
+  gchar          *device;
+  gint            midi_channel;
+
+  GIOChannel     *io;
+  guint           io_id;
+
+#ifdef HAVE_ALSA
+  snd_seq_t      *sequencer;
+  guint           seq_id;
+#endif
+
+  /* midi status */
+  gboolean        swallow;
+  gint            command;
+  gint            channel;
+  gint            key;
+  gint            velocity;
+  gint            msb;
+  gint            lsb;
+};
+
+struct _ControllerMidiClass
+{
+  GimpControllerClass  parent_class;
+};
+
+
+static GType         controller_midi_get_type (void);
+
+static void          midi_dispose             (GObject        *object);
+static void          midi_set_property        (GObject        *object,
+                                               guint           property_id,
+                                               const GValue   *value,
+                                               GParamSpec     *pspec);
+static void          midi_get_property        (GObject        *object,
+                                               guint           property_id,
+                                               GValue         *value,
+                                               GParamSpec     *pspec);
+
+static gint          midi_get_n_events        (GimpController *controller);
+static const gchar * midi_get_event_name      (GimpController *controller,
+                                               gint            event_id);
+static const gchar * midi_get_event_blurb     (GimpController *controller,
+                                               gint            event_id);
+
+static gboolean      midi_set_device          (ControllerMidi *controller,
+                                               const gchar    *device);
+static void          midi_event               (ControllerMidi *midi,
+                                               gint            channel,
+                                               gint            event_id,
+                                               gdouble         value);
+
+static gboolean      midi_read_event          (GIOChannel     *io,
+                                               GIOCondition    cond,
+                                               gpointer        data);
+
+#ifdef HAVE_ALSA
+static gboolean      midi_alsa_prepare        (GSource        *source,
+                                               gint           *timeout);
+static gboolean      midi_alsa_check          (GSource        *source);
+static gboolean      midi_alsa_dispatch       (GSource        *source,
+                                               GSourceFunc     callback,
+                                               gpointer        user_data);
+
+static GSourceFuncs alsa_source_funcs =
+{
+  midi_alsa_prepare,
+  midi_alsa_check,
+  midi_alsa_dispatch,
+  NULL
+};
+
+typedef struct _GAlsaSource GAlsaSource;
+
+struct _GAlsaSource
+{
+  GSource         source;
+  ControllerMidi *controller;
+};
+#endif /* HAVE_ALSA */
+
+static const GimpModuleInfo midi_info =
+{
+  GIMP_MODULE_ABI_VERSION,
+  N_("MIDI event controller"),
+  "Michael Natterer <mitch@gimp.org>",
+  "v0.2",
+  "(c) 2004-2007, released under the GPL",
+  "2004-2007"
+};
+
+
+G_DEFINE_DYNAMIC_TYPE (ControllerMidi, controller_midi,
+                       GIMP_TYPE_CONTROLLER)
+
+static MidiEvent midi_events[128 + 128 + 128];
+
+
+G_MODULE_EXPORT const GimpModuleInfo *
+gimp_module_query (GTypeModule *module)
+{
+  return &midi_info;
+}
+
+G_MODULE_EXPORT gboolean
+gimp_module_register (GTypeModule *module)
+{
+  controller_midi_register_type (module);
+
+  return TRUE;
+}
+
+static void
+controller_midi_class_init (ControllerMidiClass *klass)
+{
+  GimpControllerClass *controller_class = GIMP_CONTROLLER_CLASS (klass);
+  GObjectClass        *object_class     = G_OBJECT_CLASS (klass);
+  gchar               *blurb;
+
+  object_class->dispose            = midi_dispose;
+  object_class->get_property       = midi_get_property;
+  object_class->set_property       = midi_set_property;
+
+  blurb = g_strconcat (_("The name of the device to read MIDI events from."),
+#ifdef HAVE_ALSA
+                       "\n",
+                       _("Enter 'alsa' to use the ALSA sequencer."),
+#endif
+                       NULL);
+
+  g_object_class_install_property (object_class, PROP_DEVICE,
+                                   g_param_spec_string ("device",
+                                                        _("Device:"),
+                                                        blurb,
+                                                        NULL,
+                                                        GIMP_CONFIG_PARAM_FLAGS));
+
+  g_free (blurb);
+
+  g_object_class_install_property (object_class, PROP_CHANNEL,
+                                   g_param_spec_int ("channel",
+                                                     _("Channel:"),
+                                                     _("The MIDI channel to read events from. Set to -1 for reading from all MIDI channels."),
+                                                     -1, 15, -1,
+                                                     GIMP_CONFIG_PARAM_FLAGS));
+
+  controller_class->name            = _("MIDI");
+  controller_class->help_id         = "gimp-controller-midi";
+  controller_class->icon_name       = GIMP_ICON_CONTROLLER_MIDI;
+
+  controller_class->get_n_events    = midi_get_n_events;
+  controller_class->get_event_name  = midi_get_event_name;
+  controller_class->get_event_blurb = midi_get_event_blurb;
+}
+
+static void
+controller_midi_class_finalize (ControllerMidiClass *klass)
+{
+}
+
+static void
+controller_midi_init (ControllerMidi *midi)
+{
+  midi->device       = NULL;
+  midi->midi_channel = -1;
+  midi->io           = NULL;
+  midi->io_id        = 0;
+#ifdef HAVE_ALSA
+  midi->sequencer    = NULL;
+  midi->seq_id       = 0;
+#endif
+
+  midi->swallow      = TRUE; /* get rid of data bytes at start of stream */
+  midi->command      = 0x0;
+  midi->channel      = 0x0;
+  midi->key          = -1;
+  midi->velocity     = -1;
+  midi->msb          = -1;
+  midi->lsb          = -1;
+}
+
+static void
+midi_dispose (GObject *object)
+{
+  ControllerMidi *midi = CONTROLLER_MIDI (object);
+
+  midi_set_device (midi, NULL);
+
+  G_OBJECT_CLASS (controller_midi_parent_class)->dispose (object);
+}
+
+static void
+midi_set_property (GObject      *object,
+                   guint         property_id,
+                   const GValue *value,
+                   GParamSpec   *pspec)
+{
+  ControllerMidi *midi = CONTROLLER_MIDI (object);
+
+  switch (property_id)
+    {
+    case PROP_DEVICE:
+      midi_set_device (midi, g_value_get_string (value));
+      break;
+    case PROP_CHANNEL:
+      midi->midi_channel = g_value_get_int (value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+midi_get_property (GObject    *object,
+                   guint       property_id,
+                   GValue     *value,
+                   GParamSpec *pspec)
+{
+  ControllerMidi *midi = CONTROLLER_MIDI (object);
+
+  switch (property_id)
+    {
+    case PROP_DEVICE:
+      g_value_set_string (value, midi->device);
+      break;
+    case PROP_CHANNEL:
+      g_value_set_int (value, midi->midi_channel);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static gint
+midi_get_n_events (GimpController *controller)
+{
+  return 128 + 128 + 128;
+}
+
+static const gchar *
+midi_get_event_name (GimpController *controller,
+                     gint            event_id)
+{
+  if (event_id < (128 + 128 + 128))
+    {
+      if (! midi_events[event_id].name)
+        {
+          if (event_id < 128)
+            midi_events[event_id].name = g_strdup_printf ("note-on-%02x",
+                                                          event_id);
+          else if (event_id < (128 + 128))
+            midi_events[event_id].name = g_strdup_printf ("note-off-%02x",
+                                                          event_id - 128);
+          else if (event_id < (128 + 128 + 128))
+            midi_events[event_id].name = g_strdup_printf ("controller-%03d",
+                                                          event_id - 256);
+        }
+
+      return midi_events[event_id].name;
+    }
+
+  return NULL;
+}
+
+static const gchar *
+midi_get_event_blurb (GimpController *controller,
+                      gint            event_id)
+{
+  if (event_id <= 383)
+    {
+      if (! midi_events[event_id].blurb)
+        {
+          if (event_id <= 127)
+            midi_events[event_id].blurb = g_strdup_printf (_("Note %02x on"),
+                                                           event_id);
+          else if (event_id <= 255)
+            midi_events[event_id].blurb = g_strdup_printf (_("Note %02x off"),
+                                                           event_id - 128);
+          else if (event_id <= 383)
+            midi_events[event_id].blurb = g_strdup_printf (_("Controller %03d"),
+                                                           event_id - 256);
+        }
+
+      return midi_events[event_id].blurb;
+    }
+
+  return NULL;
+}
+
+static gboolean
+midi_set_device (ControllerMidi *midi,
+                 const gchar    *device)
+{
+  midi->swallow  = TRUE;
+  midi->command  = 0x0;
+  midi->channel  = 0x0;
+  midi->key      = -1;
+  midi->velocity = -1;
+  midi->msb      = -1;
+  midi->lsb      = -1;
+
+  if (midi->io)
+    {
+      g_source_remove (midi->io_id);
+      midi->io_id = 0;
+
+      g_io_channel_unref (midi->io);
+      midi->io = NULL;
+    }
+
+#ifdef HAVE_ALSA
+  if (midi->seq_id)
+    {
+      g_source_remove (midi->seq_id);
+      midi->seq_id = 0;
+
+      snd_seq_close (midi->sequencer);
+      midi->sequencer = NULL;
+    }
+#endif /* HAVE_ALSA */
+
+  if (midi->device)
+    g_free (midi->device);
+
+  midi->device = g_strdup (device);
+
+  g_object_set (midi, "name", _("MIDI Events"), NULL);
+
+  if (midi->device && strlen (midi->device))
+    {
+      gint fd;
+
+#ifdef HAVE_ALSA
+      if (! g_ascii_strcasecmp (midi->device, "alsa"))
+        {
+          GSource *event_source;
+          gchar   *alsa;
+          gchar   *state;
+          gint     ret;
+
+          ret = snd_seq_open (&midi->sequencer, "default",
+                              SND_SEQ_OPEN_INPUT, 0);
+          if (ret >= 0)
+            {
+              snd_seq_set_client_name (midi->sequencer, _("GIMP"));
+              ret = snd_seq_create_simple_port (midi->sequencer,
+                                                _("GIMP MIDI Input Controller"),
+                                                SND_SEQ_PORT_CAP_WRITE |
+                                                SND_SEQ_PORT_CAP_SUBS_WRITE,
+                                                SND_SEQ_PORT_TYPE_APPLICATION);
+            }
+
+          if (ret < 0)
+            {
+              state = g_strdup_printf (_("Device not available: %s"),
+                                       snd_strerror (ret));
+              g_object_set (midi, "state", state, NULL);
+              g_free (state);
+
+              if (midi->sequencer)
+                {
+                  snd_seq_close (midi->sequencer);
+                  midi->sequencer = NULL;
+                }
+
+              return FALSE;
+            }
+
+          /* hack to avoid new message to translate */
+          alsa = g_strdup_printf ("ALSA (%d:%d)",
+                                  snd_seq_client_id (midi->sequencer),
+                                  ret);
+          state = g_strdup_printf (_("Reading from %s"), alsa);
+          g_free (alsa);
+
+          g_object_set (midi, "state", state, NULL);
+          g_free (state);
+
+          event_source = g_source_new (&alsa_source_funcs,
+                                       sizeof (GAlsaSource));
+
+          ((GAlsaSource *) event_source)->controller = midi;
+
+          midi->seq_id = g_source_attach (event_source, NULL);
+          g_source_unref (event_source);
+
+          return TRUE;
+        }
+#endif /* HAVE_ALSA */
+
+#ifdef G_OS_WIN32
+      fd = g_open (midi->device, O_RDONLY, 0);
+#else
+      fd = g_open (midi->device, O_RDONLY | O_NONBLOCK, 0);
+#endif
+
+      if (fd >= 0)
+        {
+          gchar *state = g_strdup_printf (_("Reading from %s"), midi->device);
+          g_object_set (midi, "state", state, NULL);
+          g_free (state);
+
+          midi->io = g_io_channel_unix_new (fd);
+          g_io_channel_set_close_on_unref (midi->io, TRUE);
+          g_io_channel_set_encoding (midi->io, NULL, NULL);
+
+          midi->io_id = g_io_add_watch (midi->io,
+                                        G_IO_IN  | G_IO_ERR |
+                                        G_IO_HUP | G_IO_NVAL,
+                                        midi_read_event,
+                                        midi);
+          return TRUE;
+        }
+      else
+        {
+          gchar *state = g_strdup_printf (_("Device not available: %s"),
+                                          g_strerror (errno));
+          g_object_set (midi, "state", state, NULL);
+          g_free (state);
+        }
+    }
+  else
+    {
+      g_object_set (midi, "state", _("No device configured"), NULL);
+    }
+
+  return FALSE;
+}
+
+static void
+midi_event (ControllerMidi *midi,
+            gint            channel,
+            gint            event_id,
+            gdouble         value)
+{
+  if (channel == -1            ||
+      midi->midi_channel == -1 ||
+      channel == midi->midi_channel)
+    {
+      GimpControllerEvent event = { 0, };
+
+      event.any.type     = GIMP_CONTROLLER_EVENT_VALUE;
+      event.any.source   = GIMP_CONTROLLER (midi);
+      event.any.event_id = event_id;
+
+      g_value_init (&event.value.value, G_TYPE_DOUBLE);
+      g_value_set_double (&event.value.value, value);
+
+      gimp_controller_event (GIMP_CONTROLLER (midi), &event);
+
+      g_value_unset (&event.value.value);
+    }
+}
+
+
+#define D(stmnt) stmnt;
+
+gboolean
+midi_read_event (GIOChannel   *io,
+                 GIOCondition  cond,
+                 gpointer      data)
+{
+  ControllerMidi *midi = CONTROLLER_MIDI (data);
+  GIOStatus       status;
+  GError         *error = NULL;
+  guchar          buf[0xf];
+  gsize           size;
+  gint            pos = 0;
+
+  status = g_io_channel_read_chars (io,
+                                    (gchar *) buf,
+                                    sizeof (buf), &size,
+                                    &error);
+
+  switch (status)
+    {
+    case G_IO_STATUS_ERROR:
+    case G_IO_STATUS_EOF:
+      g_source_remove (midi->io_id);
+      midi->io_id = 0;
+
+      g_io_channel_unref (midi->io);
+      midi->io = NULL;
+
+      if (error)
+        {
+          gchar *state = g_strdup_printf (_("Device not available: %s"),
+                                          error->message);
+          g_object_set (midi, "state", state, NULL);
+          g_free (state);
+
+          g_clear_error (&error);
+        }
+      else
+        {
+          g_object_set (midi, "state", _("End of file"), NULL);
+        }
+      return FALSE;
+      break;
+
+    case G_IO_STATUS_AGAIN:
+      return TRUE;
+
+    default:
+      break;
+    }
+
+  while (pos < size)
+    {
+#if 0
+      gint i;
+
+      g_print ("MIDI IN (%d bytes), command 0x%02x: ", size, midi->command);
+
+      for (i = 0; i < size; i++)
+        g_print ("%02x ", buf[i]);
+      g_print ("\n");
+#endif
+
+      if (buf[pos] & 0x80)  /* status byte */
+        {
+          if (buf[pos] >= 0xf8)  /* realtime messages */
+            {
+              switch (buf[pos])
+                {
+                case 0xf8:  /* timing clock   */
+                case 0xf9:  /* (undefined)    */
+                case 0xfa:  /* start          */
+                case 0xfb:  /* continue       */
+                case 0xfc:  /* stop           */
+                case 0xfd:  /* (undefined)    */
+                case 0xfe:  /* active sensing */
+                case 0xff:  /* system reset   */
+                  /* nop */
+#if 0
+                  g_print ("MIDI: realtime message (%02x)\n", buf[pos]);
+#endif
+                  break;
+                }
+            }
+          else
+            {
+              midi->swallow = FALSE;  /* any status bytes ends swallowing */
+
+              if (buf[pos] >= 0xf0)  /* system messages */
+                {
+                  switch (buf[pos])
+                    {
+                    case 0xf0:  /* sysex start */
+                      midi->swallow = TRUE;
+
+                      D (g_print ("MIDI: sysex start\n"));
+                      break;
+
+                    case 0xf1:              /* time code   */
+                      midi->swallow = TRUE; /* type + data */
+
+                      D (g_print ("MIDI: time code\n"));
+                      break;
+
+                    case 0xf2:              /* song position */
+                      midi->swallow = TRUE; /* lsb + msb     */
+
+                      D (g_print ("MIDI: song position\n"));
+                      break;
+
+                    case 0xf3:              /* song select */
+                      midi->swallow = TRUE; /* song number */
+
+                      D (g_print ("MIDI: song select\n"));
+                      break;
+
+                    case 0xf4:  /* (undefined) */
+                    case 0xf5:  /* (undefined) */
+                      D (g_print ("MIDI: undefined system message\n"));
+                      break;
+
+                    case 0xf6:  /* tune request */
+                      D (g_print ("MIDI: tune request\n"));
+                      break;
+
+                    case 0xf7:  /* sysex end */
+                      D (g_print ("MIDI: sysex end\n"));
+                      break;
+                    }
+                }
+              else  /* channel messages */
+                {
+                  midi->command = buf[pos] >> 4;
+                  midi->channel = buf[pos] & 0xf;
+
+                  /* reset running status */
+                  midi->key      = -1;
+                  midi->velocity = -1;
+                  midi->msb      = -1;
+                  midi->lsb      = -1;
+                }
+            }
+
+          pos++;  /* status byte consumed */
+          continue;
+        }
+
+      if (midi->swallow)
+        {
+          pos++;  /* consume any data byte */
+          continue;
+        }
+
+      switch (midi->command)
+        {
+        case 0x8:  /* note off   */
+        case 0x9:  /* note on    */
+        case 0xa:  /* aftertouch */
+
+          if (midi->key == -1)
+            {
+              midi->key = buf[pos++];  /* key byte consumed */
+              continue;
+            }
+
+          if (midi->velocity == -1)
+            midi->velocity = buf[pos++];  /* velocity byte consumed */
+
+          /* note on with velocity = 0 means note off */
+          if (midi->command == 0x9 && midi->velocity == 0x0)
+            midi->command = 0x8;
+
+          if (midi->command == 0x9)
+            {
+              D (g_print ("MIDI (ch %02d): note on  (%02x vel %02x)\n",
+                          midi->channel,
+                          midi->key, midi->velocity));
+
+              midi_event (midi, midi->channel, midi->key,
+                          (gdouble) midi->velocity / 127.0);
+            }
+          else if (midi->command == 0x8)
+            {
+              D (g_print ("MIDI (ch %02d): note off (%02x vel %02x)\n",
+                          midi->channel, midi->key, midi->velocity));
+
+              midi_event (midi, midi->channel, midi->key + 128,
+                          (gdouble) midi->velocity / 127.0);
+            }
+          else
+            {
+              D (g_print ("MIDI (ch %02d): polyphonic aftertouch (%02x pressure %02x)\n",
+                          midi->channel, midi->key, midi->velocity));
+            }
+
+          midi->key      = -1;
+          midi->velocity = -1;
+          break;
+
+        case 0xb:  /* controllers, sustain */
+
+          if (midi->key == -1)
+            {
+              midi->key = buf[pos++];
+              continue;
+            }
+
+          if (midi->velocity == -1)
+            midi->velocity = buf[pos++];
+
+          D (g_print ("MIDI (ch %02d): controller %d (value %d)\n",
+                      midi->channel, midi->key, midi->velocity));
+
+          midi_event (midi, midi->channel, midi->key + 128 + 128,
+                      (gdouble) midi->velocity / 127.0);
+
+          midi->key      = -1;
+          midi->velocity = -1;
+          break;
+
+        case 0xc:  /* program change */
+          midi->key = buf[pos++];
+
+          D (g_print ("MIDI (ch %02d): program change (%d)\n",
+                      midi->channel, midi->key));
+
+          midi->key = -1;
+          break;
+
+        case 0xd:  /* channel key pressure */
+          midi->velocity = buf[pos++];
+
+          D (g_print ("MIDI (ch %02d): channel aftertouch (%d)\n",
+                      midi->channel, midi->velocity));
+
+          midi->velocity = -1;
+          break;
+
+        case 0xe:  /* pitch bend */
+          if (midi->lsb == -1)
+            {
+              midi->lsb = buf[pos++];
+              continue;
+            }
+
+          if (midi->msb == -1)
+            midi->msb = buf[pos++];
+
+          midi->velocity = midi->lsb | (midi->msb << 7);
+
+          D (g_print ("MIDI (ch %02d): pitch (%d)\n",
+                      midi->channel, midi->velocity));
+
+          midi->msb      = -1;
+          midi->lsb      = -1;
+          midi->velocity = -1;
+          break;
+        }
+    }
+
+  return TRUE;
+}
+
+#ifdef HAVE_ALSA
+static gboolean
+midi_alsa_prepare (GSource *source,
+                   gint    *timeout)
+{
+  ControllerMidi *midi = CONTROLLER_MIDI (((GAlsaSource *) source)->controller);
+  gboolean        ready;
+
+  ready = snd_seq_event_input_pending (midi->sequencer, 1) > 0;
+  *timeout = ready ? 1 : 10;
+
+  return ready;
+}
+
+static gboolean
+midi_alsa_check (GSource *source)
+{
+  ControllerMidi *midi = CONTROLLER_MIDI (((GAlsaSource *) source)->controller);
+
+  return snd_seq_event_input_pending (midi->sequencer, 1) > 0;
+}
+
+static gboolean
+midi_alsa_dispatch (GSource     *source,
+                    GSourceFunc  callback,
+                    gpointer     user_data)
+{
+  ControllerMidi *midi = CONTROLLER_MIDI (((GAlsaSource *) source)->controller);
+
+  snd_seq_event_t       *event;
+  snd_seq_client_info_t *client_info;
+  snd_seq_port_info_t   *port_info;
+
+  if (snd_seq_event_input_pending (midi->sequencer, 1) > 0)
+    {
+      snd_seq_event_input (midi->sequencer, &event);
+
+      if (event->type == SND_SEQ_EVENT_NOTEON &&
+          event->data.note.velocity == 0)
+        event->type = SND_SEQ_EVENT_NOTEOFF;
+
+      switch (event->type)
+        {
+        case SND_SEQ_EVENT_NOTEON:
+          midi_event (midi, event->data.note.channel,
+                      event->data.note.note,
+                      (gdouble) event->data.note.velocity / 127.0);
+          break;
+
+        case SND_SEQ_EVENT_NOTEOFF:
+          midi_event (midi, event->data.note.channel,
+                      event->data.note.note + 128,
+                      (gdouble) event->data.note.velocity / 127.0);
+          break;
+
+        case SND_SEQ_EVENT_CONTROLLER:
+          midi_event (midi, event->data.control.channel,
+                      event->data.control.param + 256,
+                      (gdouble) event->data.control.value / 127.0);
+          break;
+
+        case SND_SEQ_EVENT_PORT_SUBSCRIBED:
+          snd_seq_client_info_alloca (&client_info);
+          snd_seq_port_info_alloca (&port_info);
+          snd_seq_get_any_client_info (midi->sequencer,
+                                       event->data.connect.sender.client,
+                                       client_info);
+          snd_seq_get_any_port_info (midi->sequencer,
+                                     event->data.connect.sender.client,
+                                     event->data.connect.sender.port,
+                                     port_info);
+          /*
+           * g_printerr ("subscribed to \"%s:%s\"\n",
+           *             snd_seq_client_info_get_name (client_info),
+           *             snd_seq_port_info_get_name (port_info));
+           */
+          break;
+
+        case SND_SEQ_EVENT_PORT_UNSUBSCRIBED:
+          /* g_printerr ("unsubscribed\n");
+           */
+          break;
+
+        default:
+          break;
+        }
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+#endif /* HAVE_ALSA */
diff --git a/modules/display-filter-clip-warning.c b/modules/display-filter-clip-warning.c
new file mode 100644
index 0000000..89d290d
--- /dev/null
+++ b/modules/display-filter-clip-warning.c
@@ -0,0 +1,494 @@
+/* GIMP - The GNU Image Manipulation Program
+ *
+ * Copyright (C) 2017 Ell
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpconfig/gimpconfig.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpmodule/gimpmodule.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "libgimp/libgimp-intl.h"
+
+
+#define DEFAULT_SHADOWS_COLOR    (&(GimpRGB) {0.25, 0.25, 1.00, 1.00})
+#define DEFAULT_HIGHLIGHTS_COLOR (&(GimpRGB) {1.00, 0.25, 0.25, 1.00})
+#define DEFAULT_BOGUS_COLOR      (&(GimpRGB) {1.00, 1.00, 0.25, 1.00})
+
+
+#define CDISPLAY_TYPE_CLIP_WARNING            (cdisplay_clip_warning_get_type ())
+#define CDISPLAY_CLIP_WARNING(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), CDISPLAY_TYPE_CLIP_WARNING, CdisplayClipWarning))
+#define CDISPLAY_CLIP_WARNING_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), CDISPLAY_TYPE_CLIP_WARNING, CdisplayClipWarningClass))
+#define CDISPLAY_IS_CLIP_WARNING(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CDISPLAY_TYPE_CLIP_WARNING))
+#define CDISPLAY_IS_CLIP_WARNING_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CDISPLAY_TYPE_CLIP_WARNING))
+
+
+typedef enum
+{
+  WARNING_SHADOW    = 1 << 0,
+  WARNING_HIGHLIGHT = 1 << 1,
+  WARNING_BOGUS     = 1 << 2
+} Warning;
+
+
+typedef struct _CdisplayClipWarning      CdisplayClipWarning;
+typedef struct _CdisplayClipWarningClass CdisplayClipWarningClass;
+
+struct _CdisplayClipWarning
+{
+  GimpColorDisplay  parent_instance;
+
+  gboolean          show_shadows;
+  GimpRGB           shadows_color;
+  gboolean          show_highlights;
+  GimpRGB           highlights_color;
+  gboolean          show_bogus;
+  GimpRGB           bogus_color;
+  gboolean          include_alpha;
+  gboolean          include_transparent;
+
+  gfloat            colors[8][2][4];
+};
+
+struct _CdisplayClipWarningClass
+{
+  GimpColorDisplayClass  parent_instance;
+};
+
+
+enum
+{
+  PROP_0,
+  PROP_SHOW_SHADOWS,
+  PROP_SHADOWS_COLOR,
+  PROP_SHOW_HIGHLIGHTS,
+  PROP_HIGHLIGHTS_COLOR,
+  PROP_SHOW_BOGUS,
+  PROP_BOGUS_COLOR,
+  PROP_INCLUDE_ALPHA,
+  PROP_INCLUDE_TRANSPARENT
+};
+
+
+static GType   cdisplay_clip_warning_get_type       (void);
+
+static void    cdisplay_clip_warning_set_property   (GObject             *object,
+                                                     guint                property_id,
+                                                     const GValue        *value,
+                                                     GParamSpec          *pspec);
+static void    cdisplay_clip_warning_get_property   (GObject             *object,
+                                                     guint                property_id,
+                                                     GValue              *value,
+                                                     GParamSpec          *pspec);
+
+static void    cdisplay_clip_warning_convert_buffer (GimpColorDisplay    *display,
+                                                     GeglBuffer          *buffer,
+                                                     GeglRectangle       *area);
+
+static void    cdisplay_clip_warning_set_member     (CdisplayClipWarning *clip_warning,
+                                                     const gchar         *property_name,
+                                                     gpointer             member,
+                                                     gconstpointer        value,
+                                                     gsize                size);
+static void    cdisplay_clip_warning_update_colors  (CdisplayClipWarning *clip_warning);
+
+
+static const GimpModuleInfo cdisplay_clip_warning_info =
+{
+  GIMP_MODULE_ABI_VERSION,
+  N_("Clip warning color display filter"),
+  "Ell",
+  "v1.0",
+  "(c) 2017, released under the GPL",
+  "2017"
+};
+
+
+G_DEFINE_DYNAMIC_TYPE (CdisplayClipWarning, cdisplay_clip_warning,
+                       GIMP_TYPE_COLOR_DISPLAY)
+
+
+G_MODULE_EXPORT const GimpModuleInfo *
+gimp_module_query (GTypeModule *module)
+{
+  return &cdisplay_clip_warning_info;
+}
+
+G_MODULE_EXPORT gboolean
+gimp_module_register (GTypeModule *module)
+{
+  cdisplay_clip_warning_register_type (module);
+
+  return TRUE;
+}
+
+static void
+cdisplay_clip_warning_class_init (CdisplayClipWarningClass *klass)
+{
+  GObjectClass          *object_class  = G_OBJECT_CLASS (klass);
+  GimpColorDisplayClass *display_class = GIMP_COLOR_DISPLAY_CLASS (klass);
+
+  object_class->get_property     = cdisplay_clip_warning_get_property;
+  object_class->set_property     = cdisplay_clip_warning_set_property;
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_SHOW_SHADOWS,
+                            "show-shadows",
+                            _("Show shadows"),
+                            _("Show warning for pixels with a negative component"),
+                            TRUE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_RGB (object_class, PROP_SHADOWS_COLOR,
+                        "shadows-color",
+                        _("Shadows color"),
+                        _("Shadows warning color"),
+                        FALSE,
+                        DEFAULT_SHADOWS_COLOR,
+                        GIMP_PARAM_STATIC_STRINGS |
+                        GIMP_CONFIG_PARAM_DEFAULTS);
+
+  gegl_param_spec_set_property_key (
+    g_object_class_find_property (G_OBJECT_CLASS (klass), "shadows-color"),
+    "sensitive", "show-shadows");
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_SHOW_HIGHLIGHTS,
+                            "show-highlights",
+                            _("Show highlights"),
+                            _("Show warning for pixels with a component greater than one"),
+                            TRUE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_RGB (object_class, PROP_HIGHLIGHTS_COLOR,
+                        "highlights-color",
+                        _("Highlights color"),
+                        _("Highlights warning color"),
+                        FALSE,
+                        DEFAULT_HIGHLIGHTS_COLOR,
+                        GIMP_PARAM_STATIC_STRINGS |
+                        GIMP_CONFIG_PARAM_DEFAULTS);
+
+  gegl_param_spec_set_property_key (
+    g_object_class_find_property (G_OBJECT_CLASS (klass), "highlights-color"),
+    "sensitive", "show-highlights");
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_SHOW_BOGUS,
+                            "show-bogus",
+                            _("Show bogus"),
+                            _("Show warning for pixels with an infinite or NaN component"),
+                            TRUE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_RGB (object_class, PROP_BOGUS_COLOR,
+                        "bogus-color",
+                        _("Bogus color"),
+                        _("Bogus warning color"),
+                        FALSE,
+                        DEFAULT_BOGUS_COLOR,
+                        GIMP_PARAM_STATIC_STRINGS |
+                        GIMP_CONFIG_PARAM_DEFAULTS);
+
+  gegl_param_spec_set_property_key (
+    g_object_class_find_property (G_OBJECT_CLASS (klass), "bogus-color"),
+    "sensitive", "show-bogus");
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_INCLUDE_ALPHA,
+                            "include-alpha",
+                            _("Include alpha component"),
+                            _("Include alpha component in the warning"),
+                            TRUE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  GIMP_CONFIG_PROP_BOOLEAN (object_class, PROP_INCLUDE_TRANSPARENT,
+                            "include-transparent",
+                            _("Include transparent pixels"),
+                            _("Include fully transparent pixels in the warning"),
+                            TRUE,
+                            GIMP_PARAM_STATIC_STRINGS);
+
+  display_class->name            = _("Clip Warning");
+  display_class->help_id         = "gimp-colordisplay-clip-warning";
+  display_class->icon_name       = GIMP_ICON_DISPLAY_FILTER_CLIP_WARNING;
+
+  display_class->convert_buffer  = cdisplay_clip_warning_convert_buffer;
+}
+
+static void
+cdisplay_clip_warning_class_finalize (CdisplayClipWarningClass *klass)
+{
+}
+
+static void
+cdisplay_clip_warning_init (CdisplayClipWarning *clip_warning)
+{
+}
+
+static void
+cdisplay_clip_warning_get_property (GObject    *object,
+                                    guint       property_id,
+                                    GValue     *value,
+                                    GParamSpec *pspec)
+{
+  CdisplayClipWarning *clip_warning = CDISPLAY_CLIP_WARNING (object);
+
+  switch (property_id)
+    {
+    case PROP_SHOW_SHADOWS:
+      g_value_set_boolean (value, clip_warning->show_shadows);
+      break;
+    case PROP_SHADOWS_COLOR:
+      g_value_set_boxed (value, &clip_warning->shadows_color);
+      break;
+
+    case PROP_SHOW_HIGHLIGHTS:
+      g_value_set_boolean (value, clip_warning->show_highlights);
+      break;
+    case PROP_HIGHLIGHTS_COLOR:
+      g_value_set_boxed (value, &clip_warning->highlights_color);
+      break;
+
+    case PROP_SHOW_BOGUS:
+      g_value_set_boolean (value, clip_warning->show_bogus);
+      break;
+    case PROP_BOGUS_COLOR:
+      g_value_set_boxed (value, &clip_warning->bogus_color);
+      break;
+
+    case PROP_INCLUDE_ALPHA:
+      g_value_set_boolean (value, clip_warning->include_alpha);
+      break;
+    case PROP_INCLUDE_TRANSPARENT:
+      g_value_set_boolean (value, clip_warning->include_transparent);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+cdisplay_clip_warning_set_property (GObject      *object,
+                                    guint         property_id,
+                                    const GValue *value,
+                                    GParamSpec   *pspec)
+{
+  CdisplayClipWarning *clip_warning = CDISPLAY_CLIP_WARNING (object);
+
+#define SET_MEMBER_PTR(member, value)                                          \
+  cdisplay_clip_warning_set_member (clip_warning,                              \
+                                    pspec->name,                               \
+                                    &clip_warning->member,                     \
+                                    (value),                                   \
+                                    sizeof (clip_warning->member))
+#define SET_MEMBER_VAL(member, type, value)                                    \
+  SET_MEMBER_PTR (member, &(type) {value})
+
+  switch (property_id)
+    {
+    case PROP_SHOW_SHADOWS:
+      SET_MEMBER_VAL (show_shadows, gboolean, g_value_get_boolean (value));
+      break;
+    case PROP_SHADOWS_COLOR:
+      SET_MEMBER_PTR (shadows_color, g_value_get_boxed (value));
+      break;
+
+    case PROP_SHOW_HIGHLIGHTS:
+      SET_MEMBER_VAL (show_highlights, gboolean, g_value_get_boolean (value));
+      break;
+    case PROP_HIGHLIGHTS_COLOR:
+      SET_MEMBER_PTR (highlights_color, g_value_get_boxed (value));
+      break;
+
+    case PROP_SHOW_BOGUS:
+      SET_MEMBER_VAL (show_bogus, gboolean, g_value_get_boolean (value));
+      break;
+    case PROP_BOGUS_COLOR:
+      SET_MEMBER_PTR (bogus_color, g_value_get_boxed (value));
+      break;
+
+    case PROP_INCLUDE_ALPHA:
+      SET_MEMBER_VAL (include_alpha, gboolean, g_value_get_boolean (value));
+      break;
+    case PROP_INCLUDE_TRANSPARENT:
+      SET_MEMBER_VAL (include_transparent, gboolean, g_value_get_boolean (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+
+#undef SET_MEMBER_PTR
+#undef SET_MEMBER_VAL
+}
+
+static void
+cdisplay_clip_warning_convert_buffer (GimpColorDisplay *display,
+                                      GeglBuffer       *buffer,
+                                      GeglRectangle    *area)
+{
+  CdisplayClipWarning *clip_warning = CDISPLAY_CLIP_WARNING (display);
+  GeglBufferIterator  *iter;
+
+  iter = gegl_buffer_iterator_new (buffer, area, 0,
+                                   babl_format ("R'G'B'A float"),
+                                   GEGL_ACCESS_READWRITE, GEGL_ABYSS_NONE, 1);
+
+  while (gegl_buffer_iterator_next (iter))
+    {
+      gfloat *data  = iter->items[0].data;
+      gint    count = iter->length;
+      gint    x     = iter->items[0].roi.x;
+      gint    y     = iter->items[0].roi.y;
+
+      while (count--)
+        {
+          gint warning = 0;
+
+          if (clip_warning->include_transparent ||
+              ! (data[3] <= 0.0f) /* include nan */)
+            {
+              if (clip_warning->show_bogus                                              &&
+                  (! isfinite (data[0]) || ! isfinite (data[1]) || ! isfinite (data[2]) ||
+                   (clip_warning->include_alpha && ! isfinite (data[3]))))
+                {
+                  /* don't combine warning color of pixels with a bogus
+                   * component with other warnings
+                   */
+                  warning = WARNING_BOGUS;
+                }
+              else
+                {
+                  if (clip_warning->show_shadows                          &&
+                      (data[0] < 0.0f || data[1] < 0.0f || data[2] < 0.0f ||
+                       (clip_warning->include_alpha && data[3] < 0.0f)))
+                    {
+                      warning |= WARNING_SHADOW;
+                    }
+
+                  if (clip_warning->show_highlights                       &&
+                      (data[0] > 1.0f || data[1] > 1.0f || data[2] > 1.0f ||
+                       (clip_warning->include_alpha && data[3] > 1.0f)))
+                    {
+                      warning |= WARNING_HIGHLIGHT;
+                    }
+                }
+            }
+
+          if (warning)
+            {
+              gboolean alt = ((x + y) >> 3) & 1;
+
+              memcpy (data, clip_warning->colors[warning][alt],
+                      4 * sizeof (gfloat));
+            }
+
+          data += 4;
+
+          if (++x == iter->items[0].roi.x + iter->items[0].roi.width)
+            {
+              x = iter->items[0].roi.x;
+              y++;
+            }
+        }
+    }
+}
+
+static void
+cdisplay_clip_warning_set_member (CdisplayClipWarning *clip_warning,
+                                  const gchar         *property_name,
+                                  gpointer             member,
+                                  gconstpointer        value,
+                                  gsize                size)
+{
+  if (memcmp (member, value, size))
+    {
+      memcpy (member, value, size);
+
+      cdisplay_clip_warning_update_colors (clip_warning);
+
+      g_object_notify (G_OBJECT (clip_warning), property_name);
+      gimp_color_display_changed (GIMP_COLOR_DISPLAY (clip_warning));
+    }
+}
+
+static void
+cdisplay_clip_warning_update_colors (CdisplayClipWarning *clip_warning)
+{
+  gint i;
+  gint j;
+
+  for (i = 0; i < 8; i++)
+    {
+      gfloat *color     = clip_warning->colors[i][0];
+      gfloat *alt_color = clip_warning->colors[i][1];
+      gfloat  alt_value;
+      gint    n         = 0;
+
+      memset (color, 0, 3 * sizeof (gfloat));
+
+      if (i & WARNING_SHADOW)
+        {
+          color[0] += clip_warning->shadows_color.r;
+          color[1] += clip_warning->shadows_color.g;
+          color[2] += clip_warning->shadows_color.b;
+
+          n++;
+        }
+
+      if (i & WARNING_HIGHLIGHT)
+        {
+          color[0] += clip_warning->highlights_color.r;
+          color[1] += clip_warning->highlights_color.g;
+          color[2] += clip_warning->highlights_color.b;
+
+          n++;
+        }
+
+      if (i & WARNING_BOGUS)
+        {
+          color[0] += clip_warning->bogus_color.r;
+          color[1] += clip_warning->bogus_color.g;
+          color[2] += clip_warning->bogus_color.b;
+
+          n++;
+        }
+
+      if (n)
+        {
+          for (j = 0; j < 3; j++)
+            color[j] /= n;
+        }
+      color[3] = 1.0;
+
+      if (MAX (color[0], MAX (color[1], color[2])) <= 0.5)
+        alt_value = 1.0;
+      else
+        alt_value = 0.0;
+
+      for (j = 0; j < 3; j++)
+        alt_color[j] = 0.75 * color[j] + 0.25 * alt_value;
+      alt_color[3] = 1.0;
+    }
+}
diff --git a/modules/display-filter-color-blind.c b/modules/display-filter-color-blind.c
new file mode 100644
index 0000000..2d5785c
--- /dev/null
+++ b/modules/display-filter-color-blind.c
@@ -0,0 +1,495 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
+ *
+ * cdisplay_colorblind.c
+ * Copyright (C) 2002-2003 Michael Natterer <mitch@gimp.org>,
+ *                         Sven Neumann <sven@gimp.org>,
+ *                         Robert Dougherty <bob@vischeck.com> and
+ *                         Alex Wade <alex@vischeck.com>
+ *
+ * This code is an implementation of an algorithm described by Hans Brettel,
+ * Francoise Vienot and John Mollon in the Journal of the Optical Society of
+ * America V14(10), pg 2647. (See http://vischeck.com/ for more info.)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpconfig/gimpconfig.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpmodule/gimpmodule.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "libgimp/libgimp-intl.h"
+
+
+typedef enum
+{
+  COLORBLIND_DEFICIENCY_PROTANOPIA,
+  COLORBLIND_DEFICIENCY_DEUTERANOPIA,
+  COLORBLIND_DEFICIENCY_TRITANOPIA
+} ColorblindDeficiencyType;
+
+#define CDISPLAY_TYPE_COLORBLIND_DEFICIENCY_TYPE (cdisplay_colorblind_deficiency_type_type)
+static GType  cdisplay_colorblind_deficiency_type_register_type (GTypeModule *module);
+
+static const GEnumValue enum_values[] =
+{
+  { COLORBLIND_DEFICIENCY_PROTANOPIA,
+    "COLORBLIND_DEFICIENCY_PROTANOPIA", "protanopia"   },
+  { COLORBLIND_DEFICIENCY_DEUTERANOPIA,
+    "COLORBLIND_DEFICIENCY_DEUTERANOPIA", "deuteranopia" },
+  { COLORBLIND_DEFICIENCY_TRITANOPIA,
+    "COLORBLIND_DEFICIENCY_TRITANOPIA", "tritanopia"   },
+  { 0, NULL, NULL }
+};
+
+static const GimpEnumDesc enum_descs[] =
+  {
+    { COLORBLIND_DEFICIENCY_PROTANOPIA,
+      N_("Protanopia (insensitivity to red)"), NULL },
+    { COLORBLIND_DEFICIENCY_DEUTERANOPIA,
+      N_("Deuteranopia (insensitivity to green)"), NULL },
+    { COLORBLIND_DEFICIENCY_TRITANOPIA,
+      N_("Tritanopia (insensitivity to blue)"), NULL },
+    { 0, NULL, NULL }
+  };
+
+#define DEFAULT_DEFICIENCY_TYPE  COLORBLIND_DEFICIENCY_DEUTERANOPIA
+#define COLOR_CACHE_SIZE         1021
+
+
+#define CDISPLAY_TYPE_COLORBLIND            (cdisplay_colorblind_get_type ())
+#define CDISPLAY_COLORBLIND(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), CDISPLAY_TYPE_COLORBLIND, CdisplayColorblind))
+#define CDISPLAY_COLORBLIND_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), CDISPLAY_TYPE_COLORBLIND, CdisplayColorblindClass))
+#define CDISPLAY_IS_COLORBLIND(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CDISPLAY_TYPE_COLORBLIND))
+#define CDISPLAY_IS_COLORBLIND_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CDISPLAY_TYPE_COLORBLIND))
+
+
+typedef struct _CdisplayColorblind      CdisplayColorblind;
+typedef struct _CdisplayColorblindClass CdisplayColorblindClass;
+
+struct _CdisplayColorblind
+{
+  GimpColorDisplay          parent_instance;
+
+  ColorblindDeficiencyType  type;
+
+  gfloat                    a1, b1, c1;
+  gfloat                    a2, b2, c2;
+  gfloat                    inflection;
+};
+
+struct _CdisplayColorblindClass
+{
+  GimpColorDisplayClass  parent_instance;
+};
+
+
+enum
+{
+  PROP_0,
+  PROP_TYPE
+};
+
+
+static GType       cdisplay_colorblind_get_type       (void);
+
+static void        cdisplay_colorblind_set_property   (GObject                  *object,
+                                                       guint                     property_id,
+                                                       const GValue             *value,
+                                                       GParamSpec               *pspec);
+static void        cdisplay_colorblind_get_property   (GObject                  *object,
+                                                       guint                     property_id,
+                                                       GValue                   *value,
+                                                       GParamSpec               *pspec);
+
+static void        cdisplay_colorblind_convert_buffer (GimpColorDisplay         *display,
+                                                       GeglBuffer               *buffer,
+                                                       GeglRectangle            *area);
+static void        cdisplay_colorblind_changed        (GimpColorDisplay         *display);
+
+static void        cdisplay_colorblind_set_type       (CdisplayColorblind       *colorblind,
+                                                       ColorblindDeficiencyType  value);
+
+
+/* The RGB<->LMS transforms above are computed from the human cone
+ * photo-pigment absorption spectra and the monitor phosphor
+ * emission spectra. These parameters are fairly constant for most
+ * humans and most monitors (at least for modern CRTs). However,
+ * gamma will vary quite a bit, as it is a property of the monitor
+ * (eg. amplifier gain), the video card, and even the
+ * software. Further, users can adjust their gammas (either via
+ * adjusting the monitor amp gains or in software). That said, the
+ * following are the gamma estimates that we have used in the
+ * Vischeck code. Many colorblind users have viewed our simulations
+ * and told us that they "work" (simulated and original images are
+ * indistinguishable).
+ */
+
+#if 0
+/* Gamma conversion is now handled by simply asking for a linear buffer */
+static const gfloat gammaRGB = 2.1;
+#endif
+
+/* For most modern Cathode-Ray Tube monitors (CRTs), the following
+* are good estimates of the RGB->LMS and LMS->RGB transform
+* matrices.  They are based on spectra measured on a typical CRT
+* with a PhotoResearch PR650 spectral photometer and the Stockman
+* human cone fundamentals. NOTE: these estimates will NOT work well
+* for LCDs!
+*/
+static const gfloat rgb2lms[9] =
+{
+  0.05059983,
+  0.08585369,
+  0.00952420,
+
+  0.01893033,
+  0.08925308,
+  0.01370054,
+
+  0.00292202,
+  0.00975732,
+  0.07145979
+};
+
+static const gfloat lms2rgb[9] =
+{
+   30.830854,
+  -29.832659,
+    1.610474,
+
+   -6.481468,
+   17.715578,
+   -2.532642,
+
+   -0.375690,
+   -1.199062,
+   14.273846
+};
+
+
+static const GimpModuleInfo cdisplay_colorblind_info =
+{
+  GIMP_MODULE_ABI_VERSION,
+  N_("Color deficit simulation filter (Brettel-Vienot-Mollon algorithm)"),
+  "Michael Natterer <mitch@gimp.org>, Bob Dougherty <bob@vischeck.com>, "
+  "Alex Wade <alex@vischeck.com>",
+  "v0.2",
+  "(c) 2002-2004, released under the GPL",
+  "January 22, 2003"
+};
+
+
+G_DEFINE_DYNAMIC_TYPE (CdisplayColorblind, cdisplay_colorblind,
+                       GIMP_TYPE_COLOR_DISPLAY)
+
+static GType cdisplay_colorblind_deficiency_type_type = 0;
+
+
+G_MODULE_EXPORT const GimpModuleInfo *
+gimp_module_query (GTypeModule *module)
+{
+  return &cdisplay_colorblind_info;
+}
+
+G_MODULE_EXPORT gboolean
+gimp_module_register (GTypeModule *module)
+{
+  cdisplay_colorblind_register_type (module);
+  cdisplay_colorblind_deficiency_type_register_type (module);
+
+  return TRUE;
+}
+
+static GType
+cdisplay_colorblind_deficiency_type_register_type (GTypeModule *module)
+{
+  if (! cdisplay_colorblind_deficiency_type_type)
+    {
+      cdisplay_colorblind_deficiency_type_type =
+        g_type_module_register_enum (module, "CDisplayColorblindDeficiencyType",
+                                     enum_values);
+
+      gimp_type_set_translation_domain (cdisplay_colorblind_deficiency_type_type,
+                                        GETTEXT_PACKAGE "-libgimp");
+      gimp_enum_set_value_descriptions (cdisplay_colorblind_deficiency_type_type,
+                                        enum_descs);
+    }
+
+  return cdisplay_colorblind_deficiency_type_type;
+}
+
+static void
+cdisplay_colorblind_class_init (CdisplayColorblindClass *klass)
+{
+  GObjectClass          *object_class  = G_OBJECT_CLASS (klass);
+  GimpColorDisplayClass *display_class = GIMP_COLOR_DISPLAY_CLASS (klass);
+
+  object_class->get_property     = cdisplay_colorblind_get_property;
+  object_class->set_property     = cdisplay_colorblind_set_property;
+
+  GIMP_CONFIG_PROP_ENUM (object_class, PROP_TYPE,
+                         "type",
+                         _("Type"),
+                         _("Color vision deficiency type"),
+                         CDISPLAY_TYPE_COLORBLIND_DEFICIENCY_TYPE,
+                         DEFAULT_DEFICIENCY_TYPE,
+                         0);
+
+  display_class->name            = _("Color Deficient Vision");
+  display_class->help_id         = "gimp-colordisplay-colorblind";
+  display_class->icon_name       = GIMP_ICON_DISPLAY_FILTER_COLORBLIND;
+
+  display_class->convert_buffer  = cdisplay_colorblind_convert_buffer;
+  display_class->changed         = cdisplay_colorblind_changed;
+}
+
+static void
+cdisplay_colorblind_class_finalize (CdisplayColorblindClass *klass)
+{
+}
+
+static void
+cdisplay_colorblind_init (CdisplayColorblind *colorblind)
+{
+}
+
+static void
+cdisplay_colorblind_get_property (GObject    *object,
+                                  guint       property_id,
+                                  GValue     *value,
+                                  GParamSpec *pspec)
+{
+  CdisplayColorblind *colorblind = CDISPLAY_COLORBLIND (object);
+
+  switch (property_id)
+    {
+    case PROP_TYPE:
+      g_value_set_enum (value, colorblind->type);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+cdisplay_colorblind_set_property (GObject      *object,
+                                  guint         property_id,
+                                  const GValue *value,
+                                  GParamSpec   *pspec)
+{
+  CdisplayColorblind *colorblind = CDISPLAY_COLORBLIND (object);
+
+  switch (property_id)
+    {
+    case PROP_TYPE:
+      cdisplay_colorblind_set_type (colorblind, g_value_get_enum (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+cdisplay_colorblind_convert_buffer (GimpColorDisplay *display,
+                                    GeglBuffer       *buffer,
+                                    GeglRectangle    *area)
+{
+  CdisplayColorblind *colorblind = CDISPLAY_COLORBLIND (display);
+  GeglBufferIterator *iter;
+  const gfloat        a1         = colorblind->a1;
+  const gfloat        b1         = colorblind->b1;
+  const gfloat        c1         = colorblind->c1;
+  const gfloat        a2         = colorblind->a2;
+  const gfloat        b2         = colorblind->b2;
+  const gfloat        c2         = colorblind->c2;
+
+  iter = gegl_buffer_iterator_new (buffer, area, 0,
+                                   babl_format ("RGBA float") /* linear! */,
+                                   GEGL_ACCESS_READWRITE, GEGL_ABYSS_NONE, 1);
+
+  while (gegl_buffer_iterator_next (iter))
+    {
+      gfloat *data  = iter->items[0].data;
+      gint    count = iter->length;
+
+      while (count--)
+        {
+          gfloat tmp;
+          gfloat red, green, blue;
+          gfloat redOld, greenOld;
+
+          red   = data[0];
+          green = data[1];
+          blue  = data[2];
+
+          /* Convert to LMS (dot product with transform matrix) */
+          redOld   = red;
+          greenOld = green;
+
+          red   = redOld * rgb2lms[0] + greenOld * rgb2lms[1] + blue * rgb2lms[2];
+          green = redOld * rgb2lms[3] + greenOld * rgb2lms[4] + blue * rgb2lms[5];
+          blue  = redOld * rgb2lms[6] + greenOld * rgb2lms[7] + blue * rgb2lms[8];
+
+          switch (colorblind->type)
+            {
+            case COLORBLIND_DEFICIENCY_DEUTERANOPIA:
+              tmp = blue / red;
+              /* See which side of the inflection line we fall... */
+              if (tmp < colorblind->inflection)
+                green = -(a1 * red + c1 * blue) / b1;
+              else
+                green = -(a2 * red + c2 * blue) / b2;
+              break;
+
+            case COLORBLIND_DEFICIENCY_PROTANOPIA:
+              tmp = blue / green;
+              /* See which side of the inflection line we fall... */
+              if (tmp < colorblind->inflection)
+                red = -(b1 * green + c1 * blue) / a1;
+              else
+                red = -(b2 * green + c2 * blue) / a2;
+              break;
+
+            case COLORBLIND_DEFICIENCY_TRITANOPIA:
+              tmp = green / red;
+              /* See which side of the inflection line we fall... */
+              if (tmp < colorblind->inflection)
+                blue = -(a1 * red + b1 * green) / c1;
+              else
+                blue = -(a2 * red + b2 * green) / c2;
+              break;
+
+            default:
+              break;
+            }
+
+          /* Convert back to RGB (cross product with transform matrix) */
+          redOld   = red;
+          greenOld = green;
+
+          red   = redOld * lms2rgb[0] + greenOld * lms2rgb[1] + blue * lms2rgb[2];
+          green = redOld * lms2rgb[3] + greenOld * lms2rgb[4] + blue * lms2rgb[5];
+          blue  = redOld * lms2rgb[6] + greenOld * lms2rgb[7] + blue * lms2rgb[8];
+
+          data[0] = red;
+          data[1] = green;
+          data[2] = blue;
+
+          data += 4;
+        }
+    }
+}
+
+static void
+cdisplay_colorblind_changed (GimpColorDisplay *display)
+{
+  CdisplayColorblind *colorblind = CDISPLAY_COLORBLIND (display);
+  gfloat              anchor_e[3];
+  gfloat              anchor[12];
+
+  /*  This function performs initialisations that are dependent
+   *  on the type of color deficiency.
+   */
+
+  /* Performs protan, deutan or tritan color image simulation based on
+   * Brettel, Vienot and Mollon JOSA 14/10 1997
+   *  L,M,S for lambda=475,485,575,660
+   *
+   * Load the LMS anchor-point values for lambda = 475 & 485 nm (for
+   * protans & deutans) and the LMS values for lambda = 575 & 660 nm
+   * (for tritans)
+   */
+  anchor[0] = 0.08008;  anchor[1]  = 0.1579;    anchor[2]  = 0.5897;
+  anchor[3] = 0.1284;   anchor[4]  = 0.2237;    anchor[5]  = 0.3636;
+  anchor[6] = 0.9856;   anchor[7]  = 0.7325;    anchor[8]  = 0.001079;
+  anchor[9] = 0.0914;   anchor[10] = 0.007009;  anchor[11] = 0.0;
+
+  /* We also need LMS for RGB=(1,1,1)- the equal-energy point (one of
+   * our anchors) (we can just peel this out of the rgb2lms transform
+   * matrix)
+   */
+  anchor_e[0] = rgb2lms[0] + rgb2lms[1] + rgb2lms[2];
+  anchor_e[1] = rgb2lms[3] + rgb2lms[4] + rgb2lms[5];
+  anchor_e[2] = rgb2lms[6] + rgb2lms[7] + rgb2lms[8];
+
+  switch (colorblind->type)
+    {
+    case COLORBLIND_DEFICIENCY_DEUTERANOPIA:
+      /* find a,b,c for lam=575nm and lam=475 */
+      colorblind->a1 = anchor_e[1] * anchor[8] - anchor_e[2] * anchor[7];
+      colorblind->b1 = anchor_e[2] * anchor[6] - anchor_e[0] * anchor[8];
+      colorblind->c1 = anchor_e[0] * anchor[7] - anchor_e[1] * anchor[6];
+      colorblind->a2 = anchor_e[1] * anchor[2] - anchor_e[2] * anchor[1];
+      colorblind->b2 = anchor_e[2] * anchor[0] - anchor_e[0] * anchor[2];
+      colorblind->c2 = anchor_e[0] * anchor[1] - anchor_e[1] * anchor[0];
+      colorblind->inflection = (anchor_e[2] / anchor_e[0]);
+      break;
+
+    case COLORBLIND_DEFICIENCY_PROTANOPIA:
+      /* find a,b,c for lam=575nm and lam=475 */
+      colorblind->a1 = anchor_e[1] * anchor[8] - anchor_e[2] * anchor[7];
+      colorblind->b1 = anchor_e[2] * anchor[6] - anchor_e[0] * anchor[8];
+      colorblind->c1 = anchor_e[0] * anchor[7] - anchor_e[1] * anchor[6];
+      colorblind->a2 = anchor_e[1] * anchor[2] - anchor_e[2] * anchor[1];
+      colorblind->b2 = anchor_e[2] * anchor[0] - anchor_e[0] * anchor[2];
+      colorblind->c2 = anchor_e[0] * anchor[1] - anchor_e[1] * anchor[0];
+      colorblind->inflection = (anchor_e[2] / anchor_e[1]);
+      break;
+
+    case COLORBLIND_DEFICIENCY_TRITANOPIA:
+      /* Set 1: regions where lambda_a=575, set 2: lambda_a=475 */
+      colorblind->a1 = anchor_e[1] * anchor[11] - anchor_e[2] * anchor[10];
+      colorblind->b1 = anchor_e[2] * anchor[9]  - anchor_e[0] * anchor[11];
+      colorblind->c1 = anchor_e[0] * anchor[10] - anchor_e[1] * anchor[9];
+      colorblind->a2 = anchor_e[1] * anchor[5]  - anchor_e[2] * anchor[4];
+      colorblind->b2 = anchor_e[2] * anchor[3]  - anchor_e[0] * anchor[5];
+      colorblind->c2 = anchor_e[0] * anchor[4]  - anchor_e[1] * anchor[3];
+      colorblind->inflection = (anchor_e[1] / anchor_e[0]);
+      break;
+    }
+}
+
+static void
+cdisplay_colorblind_set_type (CdisplayColorblind       *colorblind,
+                              ColorblindDeficiencyType  value)
+{
+  if (value != colorblind->type)
+    {
+      GEnumClass *enum_class;
+
+      enum_class = g_type_class_peek (CDISPLAY_TYPE_COLORBLIND_DEFICIENCY_TYPE);
+
+      if (! g_enum_get_value (enum_class, value))
+        return;
+
+      colorblind->type = value;
+
+      g_object_notify (G_OBJECT (colorblind), "type");
+      gimp_color_display_changed (GIMP_COLOR_DISPLAY (colorblind));
+    }
+}
diff --git a/modules/display-filter-gamma.c b/modules/display-filter-gamma.c
new file mode 100644
index 0000000..c579742
--- /dev/null
+++ b/modules/display-filter-gamma.c
@@ -0,0 +1,228 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1999 Manish Singh <yosh@gimp.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpconfig/gimpconfig.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpmodule/gimpmodule.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "libgimp/libgimp-intl.h"
+
+
+#define DEFAULT_GAMMA 1.0
+
+
+#define CDISPLAY_TYPE_GAMMA            (cdisplay_gamma_get_type ())
+#define CDISPLAY_GAMMA(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), CDISPLAY_TYPE_GAMMA, CdisplayGamma))
+#define CDISPLAY_GAMMA_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), CDISPLAY_TYPE_GAMMA, CdisplayGammaClass))
+#define CDISPLAY_IS_GAMMA(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CDISPLAY_TYPE_GAMMA))
+#define CDISPLAY_IS_GAMMA_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CDISPLAY_TYPE_GAMMA))
+
+
+typedef struct _CdisplayGamma      CdisplayGamma;
+typedef struct _CdisplayGammaClass CdisplayGammaClass;
+
+struct _CdisplayGamma
+{
+  GimpColorDisplay  parent_instance;
+
+  gdouble           gamma;
+};
+
+struct _CdisplayGammaClass
+{
+  GimpColorDisplayClass  parent_instance;
+};
+
+
+enum
+{
+  PROP_0,
+  PROP_GAMMA
+};
+
+
+static GType       cdisplay_gamma_get_type        (void);
+
+static void        cdisplay_gamma_set_property    (GObject            *object,
+                                                   guint               property_id,
+                                                   const GValue       *value,
+                                                   GParamSpec         *pspec);
+static void        cdisplay_gamma_get_property    (GObject            *object,
+                                                   guint               property_id,
+                                                   GValue             *value,
+                                                   GParamSpec         *pspec);
+
+static void        cdisplay_gamma_convert_buffer  (GimpColorDisplay   *display,
+                                                   GeglBuffer         *buffer,
+                                                   GeglRectangle      *area);
+static void        cdisplay_gamma_set_gamma       (CdisplayGamma      *gamma,
+                                                   gdouble             value);
+
+
+static const GimpModuleInfo cdisplay_gamma_info =
+{
+  GIMP_MODULE_ABI_VERSION,
+  N_("Gamma color display filter"),
+  "Manish Singh <yosh@gimp.org>",
+  "v0.2",
+  "(c) 1999, released under the GPL",
+  "October 14, 2000"
+};
+
+
+G_DEFINE_DYNAMIC_TYPE (CdisplayGamma, cdisplay_gamma,
+                       GIMP_TYPE_COLOR_DISPLAY)
+
+
+G_MODULE_EXPORT const GimpModuleInfo *
+gimp_module_query (GTypeModule *module)
+{
+  return &cdisplay_gamma_info;
+}
+
+G_MODULE_EXPORT gboolean
+gimp_module_register (GTypeModule *module)
+{
+  cdisplay_gamma_register_type (module);
+
+  return TRUE;
+}
+
+static void
+cdisplay_gamma_class_init (CdisplayGammaClass *klass)
+{
+  GObjectClass          *object_class  = G_OBJECT_CLASS (klass);
+  GimpColorDisplayClass *display_class = GIMP_COLOR_DISPLAY_CLASS (klass);
+
+  object_class->get_property     = cdisplay_gamma_get_property;
+  object_class->set_property     = cdisplay_gamma_set_property;
+
+  GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_GAMMA,
+                           "gamma",
+                           _("Gamma"),
+                           NULL,
+                           0.01, 10.0, DEFAULT_GAMMA,
+                           0);
+
+  display_class->name            = _("Gamma");
+  display_class->help_id         = "gimp-colordisplay-gamma";
+  display_class->icon_name       = GIMP_ICON_DISPLAY_FILTER_GAMMA;
+
+  display_class->convert_buffer  = cdisplay_gamma_convert_buffer;
+}
+
+static void
+cdisplay_gamma_class_finalize (CdisplayGammaClass *klass)
+{
+}
+
+static void
+cdisplay_gamma_init (CdisplayGamma *gamma)
+{
+}
+
+static void
+cdisplay_gamma_get_property (GObject    *object,
+                             guint       property_id,
+                             GValue     *value,
+                             GParamSpec *pspec)
+{
+  CdisplayGamma *gamma = CDISPLAY_GAMMA (object);
+
+  switch (property_id)
+    {
+    case PROP_GAMMA:
+      g_value_set_double (value, gamma->gamma);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+cdisplay_gamma_set_property (GObject      *object,
+                             guint         property_id,
+                             const GValue *value,
+                             GParamSpec   *pspec)
+{
+  CdisplayGamma *gamma = CDISPLAY_GAMMA (object);
+
+  switch (property_id)
+    {
+    case PROP_GAMMA:
+      cdisplay_gamma_set_gamma (gamma, g_value_get_double (value));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+cdisplay_gamma_convert_buffer (GimpColorDisplay *display,
+                               GeglBuffer       *buffer,
+                               GeglRectangle    *area)
+{
+  CdisplayGamma      *gamma = CDISPLAY_GAMMA (display);
+  GeglBufferIterator *iter;
+  gdouble             one_over_gamma;
+
+  one_over_gamma = 1.0 / gamma->gamma;
+
+  iter = gegl_buffer_iterator_new (buffer, area, 0,
+                                   babl_format ("R'G'B'A float"),
+                                   GEGL_ACCESS_READWRITE, GEGL_ABYSS_NONE, 1);
+
+  while (gegl_buffer_iterator_next (iter))
+    {
+      gfloat *data  = iter->items[0].data;
+      gint    count = iter->length;
+
+      while (count--)
+        {
+          *data = pow (*data, one_over_gamma); data++;
+          *data = pow (*data, one_over_gamma); data++;
+          *data = pow (*data, one_over_gamma); data++;
+
+          data++;
+        }
+    }
+}
+
+static void
+cdisplay_gamma_set_gamma (CdisplayGamma *gamma,
+                          gdouble        value)
+{
+  if (value <= 0.0)
+    value = 1.0;
+
+  if (value != gamma->gamma)
+    {
+      gamma->gamma = value;
+
+      g_object_notify (G_OBJECT (gamma), "gamma");
+      gimp_color_display_changed (GIMP_COLOR_DISPLAY (gamma));
+    }
+}
diff --git a/modules/display-filter-high-contrast.c b/modules/display-filter-high-contrast.c
new file mode 100644
index 0000000..7cf1ac0
--- /dev/null
+++ b/modules/display-filter-high-contrast.c
@@ -0,0 +1,228 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1999 Manish Singh <yosh@gimp.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpconfig/gimpconfig.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpmodule/gimpmodule.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "libgimp/libgimp-intl.h"
+
+
+#define DEFAULT_CONTRAST 1.0
+
+
+#define CDISPLAY_TYPE_CONTRAST            (cdisplay_contrast_get_type ())
+#define CDISPLAY_CONTRAST(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), CDISPLAY_TYPE_CONTRAST, CdisplayContrast))
+#define CDISPLAY_CONTRAST_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), CDISPLAY_TYPE_CONTRAST, CdisplayContrastClass))
+#define CDISPLAY_IS_CONTRAST(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CDISPLAY_TYPE_CONTRAST))
+#define CDISPLAY_IS_CONTRAST_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CDISPLAY_TYPE_CONTRAST))
+
+
+typedef struct _CdisplayContrast      CdisplayContrast;
+typedef struct _CdisplayContrastClass CdisplayContrastClass;
+
+struct _CdisplayContrast
+{
+  GimpColorDisplay  parent_instance;
+
+  gdouble           contrast;
+};
+
+struct _CdisplayContrastClass
+{
+  GimpColorDisplayClass  parent_instance;
+};
+
+
+enum
+{
+  PROP_0,
+  PROP_CONTRAST
+};
+
+
+static GType       cdisplay_contrast_get_type        (void);
+
+static void        cdisplay_contrast_set_property    (GObject          *object,
+                                                      guint             property_id,
+                                                      const GValue     *value,
+                                                      GParamSpec       *pspec);
+static void        cdisplay_contrast_get_property    (GObject          *object,
+                                                      guint             property_id,
+                                                      GValue           *value,
+                                                      GParamSpec       *pspec);
+
+static void        cdisplay_contrast_convert_buffer  (GimpColorDisplay *display,
+                                                      GeglBuffer       *buffer,
+                                                      GeglRectangle    *area);
+static void        cdisplay_contrast_set_contrast    (CdisplayContrast *contrast,
+                                                      gdouble           value);
+
+
+static const GimpModuleInfo cdisplay_contrast_info =
+{
+  GIMP_MODULE_ABI_VERSION,
+  N_("High Contrast color display filter"),
+  "Jay Cox <jaycox@gimp.org>",
+  "v0.2",
+  "(c) 2000, released under the GPL",
+  "October 14, 2000"
+};
+
+
+G_DEFINE_DYNAMIC_TYPE (CdisplayContrast, cdisplay_contrast,
+                       GIMP_TYPE_COLOR_DISPLAY)
+
+
+G_MODULE_EXPORT const GimpModuleInfo *
+gimp_module_query (GTypeModule *module)
+{
+  return &cdisplay_contrast_info;
+}
+
+G_MODULE_EXPORT gboolean
+gimp_module_register (GTypeModule *module)
+{
+  cdisplay_contrast_register_type (module);
+
+  return TRUE;
+}
+
+static void
+cdisplay_contrast_class_init (CdisplayContrastClass *klass)
+{
+  GObjectClass          *object_class  = G_OBJECT_CLASS (klass);
+  GimpColorDisplayClass *display_class = GIMP_COLOR_DISPLAY_CLASS (klass);
+
+  object_class->get_property     = cdisplay_contrast_get_property;
+  object_class->set_property     = cdisplay_contrast_set_property;
+
+  GIMP_CONFIG_PROP_DOUBLE (object_class, PROP_CONTRAST,
+                           "contrast",
+                           _("Contrast cycles"),
+                           NULL,
+                           0.01, 10.0, DEFAULT_CONTRAST,
+                           0);
+
+  display_class->name            = _("Contrast");
+  display_class->help_id         = "gimp-colordisplay-contrast";
+  display_class->icon_name       = GIMP_ICON_DISPLAY_FILTER_CONTRAST;
+
+  display_class->convert_buffer  = cdisplay_contrast_convert_buffer;
+}
+
+static void
+cdisplay_contrast_class_finalize (CdisplayContrastClass *klass)
+{
+}
+
+static void
+cdisplay_contrast_init (CdisplayContrast *contrast)
+{
+}
+
+static void
+cdisplay_contrast_get_property (GObject    *object,
+                                guint       property_id,
+                                GValue     *value,
+                                GParamSpec *pspec)
+{
+  CdisplayContrast *contrast = CDISPLAY_CONTRAST (object);
+
+  switch (property_id)
+    {
+    case PROP_CONTRAST:
+      g_value_set_double (value, contrast->contrast);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+cdisplay_contrast_set_property (GObject      *object,
+                                guint         property_id,
+                                const GValue *value,
+                                GParamSpec   *pspec)
+{
+  CdisplayContrast *contrast = CDISPLAY_CONTRAST (object);
+
+  switch (property_id)
+    {
+    case PROP_CONTRAST:
+      cdisplay_contrast_set_contrast (contrast, g_value_get_double (value));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+cdisplay_contrast_convert_buffer (GimpColorDisplay *display,
+                                  GeglBuffer       *buffer,
+                                  GeglRectangle    *area)
+{
+  CdisplayContrast   *contrast = CDISPLAY_CONTRAST (display);
+  GeglBufferIterator *iter;
+  gfloat              c;
+
+  c = contrast->contrast * 2 * G_PI;
+
+  iter = gegl_buffer_iterator_new (buffer, area, 0,
+                                   babl_format ("R'G'B'A float"),
+                                   GEGL_ACCESS_READWRITE, GEGL_ABYSS_NONE, 1);
+
+  while (gegl_buffer_iterator_next (iter))
+    {
+      gfloat *data  = iter->items[0].data;
+      gint    count = iter->length;
+
+      while (count--)
+        {
+          *data = 0.5 * (1.0 + sin (c * *data)); data++;
+          *data = 0.5 * (1.0 + sin (c * *data)); data++;
+          *data = 0.5 * (1.0 + sin (c * *data)); data++;
+
+          data++;
+        }
+    }
+}
+
+static void
+cdisplay_contrast_set_contrast (CdisplayContrast *contrast,
+                                gdouble           value)
+{
+  if (value <= 0.0)
+    value = 1.0;
+
+  if (value != contrast->contrast)
+    {
+      contrast->contrast = value;
+
+      g_object_notify (G_OBJECT (contrast), "contrast");
+      gimp_color_display_changed (GIMP_COLOR_DISPLAY (contrast));
+    }
+}
diff --git a/modules/gimpcolorwheel.c b/modules/gimpcolorwheel.c
new file mode 100644
index 0000000..293d051
--- /dev/null
+++ b/modules/gimpcolorwheel.c
@@ -0,0 +1,1623 @@
+/* HSV color selector for GTK+
+ *
+ * Copyright (C) 1999 The Free Software Foundation
+ *
+ * Authors: Simon Budig <Simon.Budig@unix-ag.org> (original code)
+ *          Federico Mena-Quintero <federico@gimp.org> (cleanup for GTK+)
+ *          Jonathan Blandford <jrb@redhat.com> (cleanup for GTK+)
+ *          Michael Natterer <mitch@gimp.org> (ported back to GIMP)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
+ * file for a list of people on the GTK+ Team.  See the ChangeLog
+ * files for a list of changes.  These files are distributed with
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
+
+#include <libgimpconfig/gimpconfig.h>
+#include <libgimpcolor/gimpcolor.h>
+#include <libgimpmath/gimpmath.h>
+#include <libgimpwidgets/gimpwidgets.h>
+
+#include "gimpcolorwheel.h"
+
+
+/* Default ring fraction */
+#define DEFAULT_FRACTION 0.1
+
+/* Default width/height */
+#define DEFAULT_SIZE 100
+
+/* Default ring width */
+#define DEFAULT_RING_WIDTH 10
+
+
+/* Dragging modes */
+typedef enum
+{
+  DRAG_NONE,
+  DRAG_H,
+  DRAG_SV
+} DragMode;
+
+/* Private part of the GimpColorWheel structure */
+typedef struct
+{
+  /* Color value */
+  gdouble h;
+  gdouble s;
+  gdouble v;
+
+  /* ring_width is this fraction of size */
+  gdouble ring_fraction;
+
+  /* Size and ring width */
+  gint size;
+  gint ring_width;
+
+  /* Window for capturing events */
+  GdkWindow *window;
+
+  /* Dragging mode */
+  DragMode mode;
+
+  guint focus_on_ring : 1;
+
+  GimpColorConfig    *config;
+  GimpColorTransform *transform;
+} GimpColorWheelPrivate;
+
+enum
+{
+  CHANGED,
+  MOVE,
+  LAST_SIGNAL
+};
+
+static void     gimp_color_wheel_dispose           (GObject            *object);
+
+static void     gimp_color_wheel_map               (GtkWidget          *widget);
+static void     gimp_color_wheel_unmap             (GtkWidget          *widget);
+static void     gimp_color_wheel_realize           (GtkWidget          *widget);
+static void     gimp_color_wheel_unrealize         (GtkWidget          *widget);
+static void     gimp_color_wheel_size_request      (GtkWidget          *widget,
+                                                    GtkRequisition     *requisition);
+static void     gimp_color_wheel_size_allocate     (GtkWidget          *widget,
+                                                    GtkAllocation      *allocation);
+static gboolean gimp_color_wheel_button_press      (GtkWidget          *widget,
+                                                    GdkEventButton     *event);
+static gboolean gimp_color_wheel_button_release    (GtkWidget          *widget,
+                                                    GdkEventButton     *event);
+static gboolean gimp_color_wheel_motion            (GtkWidget          *widget,
+                                                    GdkEventMotion     *event);
+static gboolean gimp_color_wheel_expose            (GtkWidget          *widget,
+                                                    GdkEventExpose     *event);
+static gboolean gimp_color_wheel_grab_broken       (GtkWidget          *widget,
+                                                    GdkEventGrabBroken *event);
+static gboolean gimp_color_wheel_focus             (GtkWidget          *widget,
+                                                    GtkDirectionType    direction);
+static void     gimp_color_wheel_move              (GimpColorWheel     *wheel,
+                                                    GtkDirectionType    dir);
+
+static void     gimp_color_wheel_create_transform  (GimpColorWheel     *wheel);
+static void     gimp_color_wheel_destroy_transform (GimpColorWheel     *wheel);
+
+
+static guint wheel_signals[LAST_SIGNAL];
+
+G_DEFINE_DYNAMIC_TYPE_EXTENDED (GimpColorWheel, gimp_color_wheel,
+                                GTK_TYPE_WIDGET, 0,
+                                G_ADD_PRIVATE_DYNAMIC (GimpColorWheel))
+
+#define parent_class gimp_color_wheel_parent_class
+
+
+void
+color_wheel_register_type (GTypeModule *module)
+{
+  gimp_color_wheel_register_type (module);
+}
+
+static void
+gimp_color_wheel_class_init (GimpColorWheelClass *class)
+{
+  GObjectClass        *object_class = G_OBJECT_CLASS (class);
+  GtkWidgetClass      *widget_class = GTK_WIDGET_CLASS (class);
+  GimpColorWheelClass *wheel_class  = GIMP_COLOR_WHEEL_CLASS (class);
+  GtkBindingSet       *binding_set;
+
+  object_class->dispose              = gimp_color_wheel_dispose;
+
+  widget_class->map                  = gimp_color_wheel_map;
+  widget_class->unmap                = gimp_color_wheel_unmap;
+  widget_class->realize              = gimp_color_wheel_realize;
+  widget_class->unrealize            = gimp_color_wheel_unrealize;
+  widget_class->size_request         = gimp_color_wheel_size_request;
+  widget_class->size_allocate        = gimp_color_wheel_size_allocate;
+  widget_class->button_press_event   = gimp_color_wheel_button_press;
+  widget_class->button_release_event = gimp_color_wheel_button_release;
+  widget_class->motion_notify_event  = gimp_color_wheel_motion;
+  widget_class->expose_event         = gimp_color_wheel_expose;
+  widget_class->focus                = gimp_color_wheel_focus;
+  widget_class->grab_broken_event    = gimp_color_wheel_grab_broken;
+
+  wheel_class->move                  = gimp_color_wheel_move;
+
+  wheel_signals[CHANGED] =
+    g_signal_new ("changed",
+                  G_OBJECT_CLASS_TYPE (object_class),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpColorWheelClass, changed),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+
+  wheel_signals[MOVE] =
+    g_signal_new ("move",
+                  G_OBJECT_CLASS_TYPE (object_class),
+                  G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+                  G_STRUCT_OFFSET (GimpColorWheelClass, move),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__ENUM,
+                  G_TYPE_NONE, 1,
+                  GTK_TYPE_DIRECTION_TYPE);
+
+  binding_set = gtk_binding_set_by_class (class);
+
+  gtk_binding_entry_add_signal (binding_set, GDK_Up, 0,
+                                "move", 1,
+                                G_TYPE_ENUM, GTK_DIR_UP);
+  gtk_binding_entry_add_signal (binding_set, GDK_KP_Up, 0,
+                                "move", 1,
+                                G_TYPE_ENUM, GTK_DIR_UP);
+
+  gtk_binding_entry_add_signal (binding_set, GDK_Down, 0,
+                                "move", 1,
+                                G_TYPE_ENUM, GTK_DIR_DOWN);
+  gtk_binding_entry_add_signal (binding_set, GDK_KP_Down, 0,
+                                "move", 1,
+                                G_TYPE_ENUM, GTK_DIR_DOWN);
+
+
+  gtk_binding_entry_add_signal (binding_set, GDK_Right, 0,
+                                "move", 1,
+                                G_TYPE_ENUM, GTK_DIR_RIGHT);
+  gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, 0,
+                                "move", 1,
+                                G_TYPE_ENUM, GTK_DIR_RIGHT);
+
+  gtk_binding_entry_add_signal (binding_set, GDK_Left, 0,
+                                "move", 1,
+                                G_TYPE_ENUM, GTK_DIR_LEFT);
+  gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, 0,
+                                "move", 1,
+                                G_TYPE_ENUM, GTK_DIR_LEFT);
+}
+
+static void
+gimp_color_wheel_class_finalize (GimpColorWheelClass *klass)
+{
+}
+
+static void
+gimp_color_wheel_init (GimpColorWheel *wheel)
+{
+  GimpColorWheelPrivate *priv = gimp_color_wheel_get_instance_private (wheel);
+
+  wheel->priv = priv;
+
+  gtk_widget_set_has_window (GTK_WIDGET (wheel), FALSE);
+  gtk_widget_set_can_focus (GTK_WIDGET (wheel), TRUE);
+
+  priv->ring_fraction = DEFAULT_FRACTION;
+  priv->size          = DEFAULT_SIZE;
+  priv->ring_width    = DEFAULT_RING_WIDTH;
+
+  gimp_widget_track_monitor (GTK_WIDGET (wheel),
+                             G_CALLBACK (gimp_color_wheel_destroy_transform),
+                             NULL);
+}
+
+static void
+gimp_color_wheel_dispose (GObject *object)
+{
+  GimpColorWheel *wheel = GIMP_COLOR_WHEEL (object);
+
+  gimp_color_wheel_set_color_config (wheel, NULL);
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gimp_color_wheel_map (GtkWidget *widget)
+{
+  GimpColorWheel        *wheel = GIMP_COLOR_WHEEL (widget);
+  GimpColorWheelPrivate *priv  = wheel->priv;
+
+  GTK_WIDGET_CLASS (parent_class)->map (widget);
+
+  gdk_window_show (priv->window);
+}
+
+static void
+gimp_color_wheel_unmap (GtkWidget *widget)
+{
+  GimpColorWheel        *wheel = GIMP_COLOR_WHEEL (widget);
+  GimpColorWheelPrivate *priv  = wheel->priv;
+
+  gdk_window_hide (priv->window);
+
+  GTK_WIDGET_CLASS (parent_class)->unmap (widget);
+}
+
+static void
+gimp_color_wheel_realize (GtkWidget *widget)
+{
+  GimpColorWheel        *wheel = GIMP_COLOR_WHEEL (widget);
+  GimpColorWheelPrivate *priv  = wheel->priv;
+  GtkAllocation          allocation;
+  GdkWindowAttr          attr;
+  gint                   attr_mask;
+  GdkWindow             *parent_window;
+
+  gtk_widget_get_allocation (widget, &allocation);
+
+  gtk_widget_set_realized (widget, TRUE);
+
+  attr.window_type = GDK_WINDOW_CHILD;
+  attr.x           = allocation.x;
+  attr.y           = allocation.y;
+  attr.width       = allocation.width;
+  attr.height      = allocation.height;
+  attr.wclass      = GDK_INPUT_ONLY;
+  attr.event_mask  = (gtk_widget_get_events (widget) |
+                      GDK_KEY_PRESS_MASK      |
+                      GDK_BUTTON_PRESS_MASK   |
+                      GDK_BUTTON_RELEASE_MASK |
+                      GDK_POINTER_MOTION_MASK |
+                      GDK_ENTER_NOTIFY_MASK   |
+                      GDK_LEAVE_NOTIFY_MASK);
+
+  attr_mask = GDK_WA_X | GDK_WA_Y;
+
+  parent_window = gtk_widget_get_parent_window (widget);
+
+  gtk_widget_set_window (widget, parent_window);
+  g_object_ref (parent_window);
+
+  priv->window = gdk_window_new (parent_window, &attr, attr_mask);
+  gdk_window_set_user_data (priv->window, wheel);
+
+  gtk_widget_style_attach (widget);
+}
+
+static void
+gimp_color_wheel_unrealize (GtkWidget *widget)
+{
+  GimpColorWheel        *wheel = GIMP_COLOR_WHEEL (widget);
+  GimpColorWheelPrivate *priv  = wheel->priv;
+
+  gdk_window_set_user_data (priv->window, NULL);
+  gdk_window_destroy (priv->window);
+  priv->window = NULL;
+
+  GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
+}
+
+static void
+gimp_color_wheel_size_request (GtkWidget      *widget,
+                               GtkRequisition *requisition)
+{
+  gint focus_width;
+  gint focus_pad;
+
+  gtk_widget_style_get (widget,
+                        "focus-line-width", &focus_width,
+                        "focus-padding", &focus_pad,
+                        NULL);
+
+  requisition->width  = DEFAULT_SIZE + 2 * (focus_width + focus_pad);
+  requisition->height = DEFAULT_SIZE + 2 * (focus_width + focus_pad);
+}
+
+static void
+gimp_color_wheel_size_allocate (GtkWidget     *widget,
+                                GtkAllocation *allocation)
+{
+  GimpColorWheel        *wheel = GIMP_COLOR_WHEEL (widget);
+  GimpColorWheelPrivate *priv  = wheel->priv;
+  gint                   focus_width;
+  gint                   focus_pad;
+
+  GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
+
+  gtk_widget_style_get (widget,
+                        "focus-line-width", &focus_width,
+                        "focus-padding",    &focus_pad,
+                        NULL);
+
+  priv->size = MIN (allocation->width  - 2 * (focus_width + focus_pad),
+                    allocation->height - 2 * (focus_width + focus_pad));
+
+  priv->ring_width = priv->size * priv->ring_fraction;
+
+  if (gtk_widget_get_realized (widget))
+    gdk_window_move_resize (priv->window,
+                            allocation->x,
+                            allocation->y,
+                            allocation->width,
+                            allocation->height);
+}
+
+
+/* Utility functions */
+
+/* Converts from HSV to RGB */
+static void
+hsv_to_rgb (gdouble *h,
+            gdouble *s,
+            gdouble *v)
+{
+  gdouble hue, saturation, value;
+  gdouble f, p, q, t;
+
+  if (*s == 0.0)
+    {
+      *h = *v;
+      *s = *v;
+   /* *v = *v; -- heh */
+    }
+  else
+    {
+      hue = *h * 6.0;
+      saturation = *s;
+      value = *v;
+
+      if (hue == 6.0)
+        hue = 0.0;
+
+      f = hue - (int) hue;
+      p = value * (1.0 - saturation);
+      q = value * (1.0 - saturation * f);
+      t = value * (1.0 - saturation * (1.0 - f));
+
+      switch ((int) hue)
+        {
+        case 0:
+          *h = value;
+          *s = t;
+          *v = p;
+          break;
+
+        case 1:
+          *h = q;
+          *s = value;
+          *v = p;
+          break;
+
+        case 2:
+          *h = p;
+          *s = value;
+          *v = t;
+          break;
+
+        case 3:
+          *h = p;
+          *s = q;
+          *v = value;
+          break;
+
+        case 4:
+          *h = t;
+          *s = p;
+          *v = value;
+          break;
+
+        case 5:
+          *h = value;
+          *s = p;
+          *v = q;
+          break;
+
+        default:
+          g_assert_not_reached ();
+        }
+    }
+}
+
+/* Computes the vertices of the saturation/value triangle */
+static void
+compute_triangle (GimpColorWheel *wheel,
+                  gint           *hx,
+                  gint           *hy,
+                  gint           *sx,
+                  gint           *sy,
+                  gint           *vx,
+                  gint           *vy)
+{
+  GimpColorWheelPrivate *priv = wheel->priv;
+  GtkAllocation          allocation;
+  gdouble                center_x;
+  gdouble                center_y;
+  gdouble                inner, outer;
+  gdouble                angle;
+
+  gtk_widget_get_allocation (GTK_WIDGET (wheel), &allocation);
+
+  center_x = allocation.width / 2.0;
+  center_y = allocation.height / 2.0;
+
+  outer = priv->size / 2.0;
+  inner = outer - priv->ring_width;
+  angle = priv->h * 2.0 * G_PI;
+
+  *hx = floor (center_x + cos (angle) * inner + 0.5);
+  *hy = floor (center_y - sin (angle) * inner + 0.5);
+  *sx = floor (center_x + cos (angle + 2.0 * G_PI / 3.0) * inner + 0.5);
+  *sy = floor (center_y - sin (angle + 2.0 * G_PI / 3.0) * inner + 0.5);
+  *vx = floor (center_x + cos (angle + 4.0 * G_PI / 3.0) * inner + 0.5);
+  *vy = floor (center_y - sin (angle + 4.0 * G_PI / 3.0) * inner + 0.5);
+}
+
+/* Computes whether a point is inside the hue ring */
+static gboolean
+is_in_ring (GimpColorWheel *wheel,
+            gdouble         x,
+            gdouble         y)
+{
+  GimpColorWheelPrivate *priv = wheel->priv;
+  GtkAllocation          allocation;
+  gdouble                dx, dy, dist;
+  gdouble                center_x;
+  gdouble                center_y;
+  gdouble                inner, outer;
+
+  gtk_widget_get_allocation (GTK_WIDGET (wheel), &allocation);
+
+  center_x = allocation.width / 2.0;
+  center_y = allocation.height / 2.0;
+
+  outer = priv->size / 2.0;
+  inner = outer - priv->ring_width;
+
+  dx = x - center_x;
+  dy = center_y - y;
+  dist = dx * dx + dy * dy;
+
+  return (dist >= inner * inner && dist <= outer * outer);
+}
+
+/* Computes a saturation/value pair based on the mouse coordinates */
+static void
+compute_sv (GimpColorWheel *wheel,
+            gdouble         x,
+            gdouble         y,
+            gdouble        *s,
+            gdouble        *v)
+{
+  GtkAllocation allocation;
+  gint          ihx, ihy, isx, isy, ivx, ivy;
+  gdouble       hx, hy, sx, sy, vx, vy;
+  gdouble       center_x;
+  gdouble       center_y;
+
+  gtk_widget_get_allocation (GTK_WIDGET (wheel), &allocation);
+
+  compute_triangle (wheel, &ihx, &ihy, &isx, &isy, &ivx, &ivy);
+
+  center_x = allocation.width / 2.0;
+  center_y = allocation.height / 2.0;
+
+  hx = ihx - center_x;
+  hy = center_y - ihy;
+  sx = isx - center_x;
+  sy = center_y - isy;
+  vx = ivx - center_x;
+  vy = center_y - ivy;
+  x -= center_x;
+  y = center_y - y;
+
+  if (vx * (x - sx) + vy * (y - sy) < 0.0)
+    {
+      *s = 1.0;
+      *v = (((x - sx) * (hx - sx) + (y - sy) * (hy-sy))
+            / ((hx - sx) * (hx - sx) + (hy - sy) * (hy - sy)));
+
+      if (*v < 0.0)
+        *v = 0.0;
+      else if (*v > 1.0)
+        *v = 1.0;
+    }
+  else if (hx * (x - sx) + hy * (y - sy) < 0.0)
+    {
+      *s = 0.0;
+      *v = (((x - sx) * (vx - sx) + (y - sy) * (vy - sy))
+            / ((vx - sx) * (vx - sx) + (vy - sy) * (vy - sy)));
+
+      if (*v < 0.0)
+        *v = 0.0;
+      else if (*v > 1.0)
+        *v = 1.0;
+    }
+  else if (sx * (x - hx) + sy * (y - hy) < 0.0)
+    {
+      *v = 1.0;
+      *s = (((x - vx) * (hx - vx) + (y - vy) * (hy - vy)) /
+            ((hx - vx) * (hx - vx) + (hy - vy) * (hy - vy)));
+
+      if (*s < 0.0)
+        *s = 0.0;
+      else if (*s > 1.0)
+        *s = 1.0;
+    }
+  else
+    {
+      *v = (((x - sx) * (hy - vy) - (y - sy) * (hx - vx))
+            / ((vx - sx) * (hy - vy) - (vy - sy) * (hx - vx)));
+
+      if (*v<= 0.0)
+        {
+          *v = 0.0;
+          *s = 0.0;
+        }
+      else
+        {
+          if (*v > 1.0)
+            *v = 1.0;
+
+          if (fabs (hy - vy) < fabs (hx - vx))
+            *s = (x - sx - *v * (vx - sx)) / (*v * (hx - vx));
+          else
+            *s = (y - sy - *v * (vy - sy)) / (*v * (hy - vy));
+
+          if (*s < 0.0)
+            *s = 0.0;
+          else if (*s > 1.0)
+            *s = 1.0;
+        }
+    }
+}
+
+/* Computes whether a point is inside the saturation/value triangle */
+static gboolean
+is_in_triangle (GimpColorWheel *wheel,
+                gdouble         x,
+                gdouble         y)
+{
+  gint    hx, hy, sx, sy, vx, vy;
+  gdouble det, s, v;
+
+  compute_triangle (wheel, &hx, &hy, &sx, &sy, &vx, &vy);
+
+  det = (vx - sx) * (hy - sy) - (vy - sy) * (hx - sx);
+
+  s = ((x - sx) * (hy - sy) - (y - sy) * (hx - sx)) / det;
+  v = ((vx - sx) * (y - sy) - (vy - sy) * (x - sx)) / det;
+
+  return (s >= 0.0 && v >= 0.0 && s + v <= 1.0);
+}
+
+/* Computes a value based on the mouse coordinates */
+static double
+compute_v (GimpColorWheel *wheel,
+           gdouble         x,
+           gdouble         y)
+{
+  GtkAllocation allocation;
+  gdouble       center_x;
+  gdouble       center_y;
+  gdouble       dx, dy;
+  gdouble       angle;
+
+  gtk_widget_get_allocation (GTK_WIDGET (wheel), &allocation);
+
+  center_x = allocation.width / 2.0;
+  center_y = allocation.height / 2.0;
+
+  dx = x - center_x;
+  dy = center_y - y;
+
+  angle = atan2 (dy, dx);
+  if (angle < 0.0)
+    angle += 2.0 * G_PI;
+
+  return angle / (2.0 * G_PI);
+}
+
+static void
+set_cross_grab (GimpColorWheel *wheel,
+                guint32         time)
+{
+  GimpColorWheelPrivate *priv = wheel->priv;
+  GdkCursor             *cursor;
+
+  cursor =
+    gdk_cursor_new_for_display (gtk_widget_get_display (GTK_WIDGET (wheel)),
+                                GDK_CROSSHAIR);
+
+  gdk_pointer_grab (priv->window, FALSE,
+                    GDK_POINTER_MOTION_MASK      |
+                    GDK_POINTER_MOTION_HINT_MASK |
+                    GDK_BUTTON_RELEASE_MASK,
+                    NULL, cursor, time);
+  gdk_cursor_unref (cursor);
+}
+
+static gboolean
+gimp_color_wheel_grab_broken (GtkWidget          *widget,
+                              GdkEventGrabBroken *event)
+{
+  GimpColorWheel        *wheel = GIMP_COLOR_WHEEL (widget);
+  GimpColorWheelPrivate *priv  = wheel->priv;
+
+  priv->mode = DRAG_NONE;
+
+  return TRUE;
+}
+
+static gboolean
+gimp_color_wheel_button_press (GtkWidget      *widget,
+                               GdkEventButton *event)
+{
+  GimpColorWheel        *wheel = GIMP_COLOR_WHEEL (widget);
+  GimpColorWheelPrivate *priv  = wheel->priv;
+  gdouble                x, y;
+
+  if (priv->mode != DRAG_NONE || event->button != 1)
+    return FALSE;
+
+  x = event->x;
+  y = event->y;
+
+  if (is_in_ring (wheel, x, y))
+    {
+      priv->mode = DRAG_H;
+      set_cross_grab (wheel, event->time);
+
+      gimp_color_wheel_set_color (wheel,
+                                  compute_v (wheel, x, y),
+                                  priv->s,
+                                  priv->v);
+
+      gtk_widget_grab_focus (widget);
+      priv->focus_on_ring = TRUE;
+
+      return TRUE;
+    }
+
+  if (is_in_triangle (wheel, x, y))
+    {
+      gdouble s, v;
+
+      priv->mode = DRAG_SV;
+      set_cross_grab (wheel, event->time);
+
+      compute_sv (wheel, x, y, &s, &v);
+      gimp_color_wheel_set_color (wheel, priv->h, s, v);
+
+      gtk_widget_grab_focus (widget);
+      priv->focus_on_ring = FALSE;
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static gboolean
+gimp_color_wheel_button_release (GtkWidget      *widget,
+                                 GdkEventButton *event)
+{
+  GimpColorWheel        *wheel = GIMP_COLOR_WHEEL (widget);
+  GimpColorWheelPrivate *priv  = wheel->priv;
+  DragMode               mode;
+  gdouble                x, y;
+
+  if (priv->mode == DRAG_NONE || event->button != 1)
+    return FALSE;
+
+  /* Set the drag mode to DRAG_NONE so that signal handlers for "catched"
+   * can see that this is the final color state.
+   */
+
+  mode = priv->mode;
+  priv->mode = DRAG_NONE;
+
+  x = event->x;
+  y = event->y;
+
+  if (mode == DRAG_H)
+    {
+      gimp_color_wheel_set_color (wheel,
+                                  compute_v (wheel, x, y), priv->s, priv->v);
+    }
+  else if (mode == DRAG_SV)
+    {
+      gdouble s, v;
+
+      compute_sv (wheel, x, y, &s, &v);
+      gimp_color_wheel_set_color (wheel, priv->h, s, v);
+    }
+  else
+    g_assert_not_reached ();
+
+  gdk_display_pointer_ungrab (gdk_window_get_display (event->window),
+                              event->time);
+
+  return TRUE;
+}
+
+static gboolean
+gimp_color_wheel_motion (GtkWidget      *widget,
+                         GdkEventMotion *event)
+{
+  GimpColorWheel        *wheel = GIMP_COLOR_WHEEL (widget);
+  GimpColorWheelPrivate *priv  = wheel->priv;
+  gdouble                x, y;
+
+  if (priv->mode == DRAG_NONE)
+    return FALSE;
+
+  gdk_event_request_motions (event);
+  x = event->x;
+  y = event->y;
+
+  if (priv->mode == DRAG_H)
+    {
+      gimp_color_wheel_set_color (wheel,
+                                  compute_v (wheel, x, y), priv->s, priv->v);
+      return TRUE;
+    }
+  else if (priv->mode == DRAG_SV)
+    {
+      gdouble s, v;
+
+      compute_sv (wheel, x, y, &s, &v);
+      gimp_color_wheel_set_color (wheel, priv->h, s, v);
+      return TRUE;
+    }
+
+  g_assert_not_reached ();
+
+  return FALSE;
+}
+
+
+/* Redrawing */
+
+/* Paints the hue ring */
+static void
+paint_ring (GimpColorWheel *wheel,
+            cairo_t        *cr,
+            gint            x,
+            gint            y,
+            gint            width,
+            gint            height)
+{
+  GtkWidget             *widget = GTK_WIDGET (wheel);
+  GimpColorWheelPrivate *priv   = wheel->priv;
+  GtkAllocation          allocation;
+  gint                   xx, yy;
+  gdouble                dx, dy, dist;
+  gdouble                center_x;
+  gdouble                center_y;
+  gdouble                inner, outer;
+  guint32               *buf, *p;
+  gdouble                angle;
+  gdouble                hue;
+  gdouble                r, g, b;
+  cairo_surface_t       *source;
+  cairo_t               *source_cr;
+  gint                   stride;
+  gint                   focus_width;
+  gint                   focus_pad;
+
+  gtk_widget_get_allocation (GTK_WIDGET (wheel), &allocation);
+
+  gtk_widget_style_get (widget,
+                        "focus-line-width", &focus_width,
+                        "focus-padding", &focus_pad,
+                        NULL);
+
+  center_x = allocation.width / 2.0;
+  center_y = allocation.height / 2.0;
+
+  outer = priv->size / 2.0;
+  inner = outer - priv->ring_width;
+
+  /* Create an image initialized with the ring colors */
+
+  stride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, width);
+  buf = g_new (guint32, height * stride / 4);
+
+  for (yy = 0; yy < height; yy++)
+    {
+      p = buf + yy * width;
+
+      dy = -(yy + y - center_y);
+
+      for (xx = 0; xx < width; xx++)
+        {
+          dx = xx + x - center_x;
+
+          dist = dx * dx + dy * dy;
+          if (dist < ((inner-1) * (inner-1)) || dist > ((outer+1) * (outer+1)))
+            {
+              *p++ = 0;
+              continue;
+            }
+
+          angle = atan2 (dy, dx);
+          if (angle < 0.0)
+            angle += 2.0 * G_PI;
+
+          hue = angle / (2.0 * G_PI);
+
+          r = hue;
+          g = 1.0;
+          b = 1.0;
+          hsv_to_rgb (&r, &g, &b);
+
+          *p++ = (((int)floor (r * 255 + 0.5) << 16) |
+                  ((int)floor (g * 255 + 0.5) << 8) |
+                  (int)floor (b * 255 + 0.5));
+        }
+    }
+
+  if (priv->transform)
+    {
+      const Babl *format = babl_format ("cairo-RGB24");
+      guchar     *b      = (guchar *) buf;
+      gint        i;
+
+      for (i = 0; i < height; i++)
+        {
+          gimp_color_transform_process_pixels (priv->transform,
+                                               format, b,
+                                               format, b,
+                                               width);
+
+          b  += stride;
+        }
+    }
+
+  source = cairo_image_surface_create_for_data ((guchar *) buf,
+                                                CAIRO_FORMAT_RGB24,
+                                                width, height, stride);
+
+  /* Now draw the value marker onto the source image, so that it
+   * will get properly clipped at the edges of the ring
+   */
+  source_cr = cairo_create (source);
+
+  r = priv->h;
+  g = 1.0;
+  b = 1.0;
+  hsv_to_rgb (&r, &g, &b);
+
+  if (GIMP_RGB_LUMINANCE (r, g, b) > 0.5)
+    cairo_set_source_rgb (source_cr, 0., 0., 0.);
+  else
+    cairo_set_source_rgb (source_cr, 1., 1., 1.);
+
+  cairo_move_to (source_cr, -x + center_x, - y + center_y);
+  cairo_line_to (source_cr,
+                 -x + center_x + cos (priv->h * 2.0 * G_PI) * priv->size / 2,
+                 -y + center_y - sin (priv->h * 2.0 * G_PI) * priv->size / 2);
+  cairo_stroke (source_cr);
+  cairo_destroy (source_cr);
+
+  /* Draw the ring using the source image */
+
+  cairo_save (cr);
+
+  cairo_set_source_surface (cr, source, x, y);
+  cairo_surface_destroy (source);
+
+  cairo_set_line_width (cr, priv->ring_width);
+  cairo_new_path (cr);
+  cairo_arc (cr,
+             center_x, center_y,
+             priv->size / 2. - priv->ring_width / 2.,
+             0, 2 * G_PI);
+  cairo_stroke (cr);
+
+  cairo_restore (cr);
+
+  g_free (buf);
+}
+
+/* Converts an HSV triplet to an integer RGB triplet */
+static void
+get_color (gdouble  h,
+           gdouble  s,
+           gdouble  v,
+           gint    *r,
+           gint    *g,
+           gint    *b)
+{
+  hsv_to_rgb (&h, &s, &v);
+
+  *r = floor (h * 255 + 0.5);
+  *g = floor (s * 255 + 0.5);
+  *b = floor (v * 255 + 0.5);
+}
+
+#define SWAP(a, b, t) ((t) = (a), (a) = (b), (b) = (t))
+
+#define LERP(a, b, v1, v2, i) (((v2) - (v1) != 0)                                       \
+                               ? ((a) + ((b) - (a)) * ((i) - (v1)) / ((v2) - (v1)))     \
+                               : (a))
+
+/* Number of pixels we extend out from the edges when creating
+ * color source to avoid artifacts
+ */
+#define PAD 3
+
+/* Paints the HSV triangle */
+static void
+paint_triangle (GimpColorWheel *wheel,
+                cairo_t        *cr,
+                gint            x,
+                gint            y,
+                gint            width,
+                gint            height)
+{
+  GtkWidget             *widget = GTK_WIDGET (wheel);
+  GimpColorWheelPrivate *priv   = wheel->priv;
+  gint                   hx, hy, sx, sy, vx, vy; /* HSV vertices */
+  gint                   x1, y1, r1, g1, b1; /* First vertex in scanline order */
+  gint                   x2, y2, r2, g2, b2; /* Second vertex */
+  gint                   x3, y3, r3, g3, b3; /* Third vertex */
+  gint                   t;
+  guint32               *buf, *p, c;
+  gint                   xl, xr, rl, rr, gl, gr, bl, br; /* Scanline data */
+  gint                   xx, yy;
+  gint                   x_interp, y_interp;
+  gint                   x_start, x_end;
+  cairo_surface_t       *source;
+  gdouble                r, g, b;
+  gchar                 *detail;
+  gint                   stride;
+
+  /* Compute triangle's vertices */
+
+  compute_triangle (wheel, &hx, &hy, &sx, &sy, &vx, &vy);
+
+  x1 = hx;
+  y1 = hy;
+  get_color (priv->h, 1.0, 1.0, &r1, &g1, &b1);
+
+  x2 = sx;
+  y2 = sy;
+  get_color (priv->h, 1.0, 0.0, &r2, &g2, &b2);
+
+  x3 = vx;
+  y3 = vy;
+  get_color (priv->h, 0.0, 1.0, &r3, &g3, &b3);
+
+  if (y2 > y3)
+    {
+      SWAP (x2, x3, t);
+      SWAP (y2, y3, t);
+      SWAP (r2, r3, t);
+      SWAP (g2, g3, t);
+      SWAP (b2, b3, t);
+    }
+
+  if (y1 > y3)
+    {
+      SWAP (x1, x3, t);
+      SWAP (y1, y3, t);
+      SWAP (r1, r3, t);
+      SWAP (g1, g3, t);
+      SWAP (b1, b3, t);
+    }
+
+  if (y1 > y2)
+    {
+      SWAP (x1, x2, t);
+      SWAP (y1, y2, t);
+      SWAP (r1, r2, t);
+      SWAP (g1, g2, t);
+      SWAP (b1, b2, t);
+    }
+
+  /* Shade the triangle */
+
+  stride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, width);
+  buf = g_new (guint32, height * stride / 4);
+
+  for (yy = 0; yy < height; yy++)
+    {
+      p = buf + yy * width;
+
+      if (yy + y >= y1 - PAD && yy + y < y3 + PAD)
+        {
+          y_interp = CLAMP (yy + y, y1, y3);
+
+          if (y_interp < y2)
+            {
+              xl = LERP (x1, x2, y1, y2, y_interp);
+
+              rl = LERP (r1, r2, y1, y2, y_interp);
+              gl = LERP (g1, g2, y1, y2, y_interp);
+              bl = LERP (b1, b2, y1, y2, y_interp);
+            }
+          else
+            {
+              xl = LERP (x2, x3, y2, y3, y_interp);
+
+              rl = LERP (r2, r3, y2, y3, y_interp);
+              gl = LERP (g2, g3, y2, y3, y_interp);
+              bl = LERP (b2, b3, y2, y3, y_interp);
+            }
+
+          xr = LERP (x1, x3, y1, y3, y_interp);
+
+          rr = LERP (r1, r3, y1, y3, y_interp);
+          gr = LERP (g1, g3, y1, y3, y_interp);
+          br = LERP (b1, b3, y1, y3, y_interp);
+
+          if (xl > xr)
+            {
+              SWAP (xl, xr, t);
+              SWAP (rl, rr, t);
+              SWAP (gl, gr, t);
+              SWAP (bl, br, t);
+            }
+
+          x_start = MAX (xl - PAD, x);
+          x_end = MIN (xr + PAD, x + width);
+          x_start = MIN (x_start, x_end);
+
+          c = (rl << 16) | (gl << 8) | bl;
+
+          for (xx = x; xx < x_start; xx++)
+            *p++ = c;
+
+          for (; xx < x_end; xx++)
+            {
+              x_interp = CLAMP (xx, xl, xr);
+
+              *p++ = ((LERP (rl, rr, xl, xr, x_interp) << 16) |
+                      (LERP (gl, gr, xl, xr, x_interp) << 8) |
+                      LERP (bl, br, xl, xr, x_interp));
+            }
+
+          c = (rr << 16) | (gr << 8) | br;
+
+          for (; xx < x + width; xx++)
+            *p++ = c;
+        }
+    }
+
+  if (priv->transform)
+    {
+      const Babl *format = babl_format ("cairo-RGB24");
+      guchar     *b      = (guchar *) buf;
+      gint        i;
+
+      for (i = 0; i < height; i++)
+        {
+          gimp_color_transform_process_pixels (priv->transform,
+                                               format, b,
+                                               format, b,
+                                               width);
+
+          b  += stride;
+        }
+    }
+
+  source = cairo_image_surface_create_for_data ((guchar *) buf,
+                                                CAIRO_FORMAT_RGB24,
+                                                width, height, stride);
+
+  /* Draw a triangle with the image as a source */
+
+  cairo_set_source_surface (cr, source, x, y);
+  cairo_surface_destroy (source);
+
+  cairo_move_to (cr, x1, y1);
+  cairo_line_to (cr, x2, y2);
+  cairo_line_to (cr, x3, y3);
+  cairo_close_path (cr);
+  cairo_fill (cr);
+
+  g_free (buf);
+
+  /* Draw value marker */
+
+  xx = floor (sx + (vx - sx) * priv->v + (hx - vx) * priv->s * priv->v + 0.5);
+  yy = floor (sy + (vy - sy) * priv->v + (hy - vy) * priv->s * priv->v + 0.5);
+
+  r = priv->h;
+  g = priv->s;
+  b = priv->v;
+  hsv_to_rgb (&r, &g, &b);
+
+  if (GIMP_RGB_LUMINANCE (r, g, b) > 0.5)
+    {
+      detail = "colorwheel_light";
+      cairo_set_source_rgb (cr, 0., 0., 0.);
+    }
+  else
+    {
+      detail = "colorwheel_dark";
+      cairo_set_source_rgb (cr, 1., 1., 1.);
+    }
+
+#define RADIUS 4
+#define FOCUS_RADIUS 6
+
+  cairo_new_path (cr);
+  cairo_arc (cr, xx, yy, RADIUS, 0, 2 * G_PI);
+  cairo_stroke (cr);
+
+  /* Draw focus outline */
+
+  if (gtk_widget_has_focus (widget) &&
+      ! priv->focus_on_ring)
+    {
+      GtkAllocation allocation;
+      gint          focus_width;
+      gint          focus_pad;
+
+      gtk_widget_get_allocation (widget, &allocation);
+
+      gtk_widget_style_get (widget,
+                            "focus-line-width", &focus_width,
+                            "focus-padding", &focus_pad,
+                            NULL);
+
+      gtk_paint_focus (gtk_widget_get_style (widget),
+                       gtk_widget_get_window (widget),
+                       gtk_widget_get_state (widget),
+                       NULL, widget, detail,
+                       allocation.x + xx - FOCUS_RADIUS - focus_width - focus_pad,
+                       allocation.y + yy - FOCUS_RADIUS - focus_width - focus_pad,
+                       2 * (FOCUS_RADIUS + focus_width + focus_pad),
+                       2 * (FOCUS_RADIUS + focus_width + focus_pad));
+    }
+}
+
+/* Paints the contents of the HSV color selector */
+static void
+paint (GimpColorWheel *hsv,
+       cairo_t        *cr,
+       gint            x,
+       gint            y,
+       gint            width,
+       gint            height)
+{
+  GimpColorWheelPrivate *priv = hsv->priv;
+
+  if (! priv->transform)
+    gimp_color_wheel_create_transform (hsv);
+
+  paint_ring (hsv, cr, x, y, width, height);
+  paint_triangle (hsv, cr, x, y, width, height);
+}
+
+static gint
+gimp_color_wheel_expose (GtkWidget      *widget,
+                         GdkEventExpose *event)
+{
+  GimpColorWheel        *wheel = GIMP_COLOR_WHEEL (widget);
+  GimpColorWheelPrivate *priv  = wheel->priv;
+  GtkAllocation          allocation;
+  GdkRectangle           dest;
+  cairo_t               *cr;
+
+  if (! (event->window == gtk_widget_get_window (widget) &&
+         gtk_widget_is_drawable (widget)))
+    return FALSE;
+
+  gtk_widget_get_allocation (widget, &allocation);
+
+  if (!gdk_rectangle_intersect (&event->area, &allocation, &dest))
+    return FALSE;
+
+  cr = gdk_cairo_create (gtk_widget_get_window (widget));
+
+  cairo_translate (cr, allocation.x, allocation.y);
+  paint (wheel, cr,
+         dest.x - allocation.x,
+         dest.y - allocation.y,
+         dest.width, dest.height);
+  cairo_destroy (cr);
+
+  if (gtk_widget_has_focus (widget) && priv->focus_on_ring)
+    gtk_paint_focus (gtk_widget_get_style (widget),
+                     gtk_widget_get_window (widget),
+                     gtk_widget_get_state (widget),
+                     &event->area, widget, NULL,
+                     allocation.x,
+                     allocation.y,
+                     allocation.width,
+                     allocation.height);
+
+  return FALSE;
+}
+
+static gboolean
+gimp_color_wheel_focus (GtkWidget        *widget,
+                        GtkDirectionType  dir)
+{
+  GimpColorWheel        *wheel = GIMP_COLOR_WHEEL (widget);
+  GimpColorWheelPrivate *priv  = wheel->priv;
+
+  if (!gtk_widget_has_focus (widget))
+    {
+      if (dir == GTK_DIR_TAB_BACKWARD)
+        priv->focus_on_ring = FALSE;
+      else
+        priv->focus_on_ring = TRUE;
+
+      gtk_widget_grab_focus (widget);
+      return TRUE;
+    }
+
+  switch (dir)
+    {
+    case GTK_DIR_UP:
+      if (priv->focus_on_ring)
+        return FALSE;
+      else
+        priv->focus_on_ring = TRUE;
+      break;
+
+    case GTK_DIR_DOWN:
+      if (priv->focus_on_ring)
+        priv->focus_on_ring = FALSE;
+      else
+        return FALSE;
+      break;
+
+    case GTK_DIR_LEFT:
+    case GTK_DIR_TAB_BACKWARD:
+      if (priv->focus_on_ring)
+        return FALSE;
+      else
+        priv->focus_on_ring = TRUE;
+      break;
+
+    case GTK_DIR_RIGHT:
+    case GTK_DIR_TAB_FORWARD:
+      if (priv->focus_on_ring)
+        priv->focus_on_ring = FALSE;
+      else
+        return FALSE;
+      break;
+    }
+
+  gtk_widget_queue_draw (widget);
+
+  return TRUE;
+}
+
+/**
+ * gimp_color_wheel_new:
+ *
+ * Creates a new HSV color selector.
+ *
+ * Return value: A newly-created HSV color selector.
+ *
+ * Since: 2.10
+ */
+GtkWidget*
+gimp_color_wheel_new (void)
+{
+  return g_object_new (GIMP_TYPE_COLOR_WHEEL, NULL);
+}
+
+/**
+ * gimp_color_wheel_set_color:
+ * @hsv: An HSV color selector
+ * @h: Hue
+ * @s: Saturation
+ * @v: Value
+ *
+ * Sets the current color in an HSV color selector.
+ * Color component values must be in the [0.0, 1.0] range.
+ *
+ * Since: 2.10
+ */
+void
+gimp_color_wheel_set_color (GimpColorWheel *wheel,
+                            gdouble         h,
+                            gdouble         s,
+                            gdouble         v)
+{
+  GimpColorWheelPrivate *priv;
+
+  g_return_if_fail (GIMP_IS_COLOR_WHEEL (wheel));
+  g_return_if_fail (h >= 0.0 && h <= 1.0);
+  g_return_if_fail (s >= 0.0 && s <= 1.0);
+  g_return_if_fail (v >= 0.0 && v <= 1.0);
+
+  priv = wheel->priv;
+
+  priv->h = h;
+  priv->s = s;
+  priv->v = v;
+
+  g_signal_emit (wheel, wheel_signals[CHANGED], 0);
+
+  gtk_widget_queue_draw (GTK_WIDGET (wheel));
+}
+
+/**
+ * gimp_color_wheel_get_color:
+ * @hsv: An HSV color selector
+ * @h: (out): Return value for the hue
+ * @s: (out): Return value for the saturation
+ * @v: (out): Return value for the value
+ *
+ * Queries the current color in an HSV color selector.
+ * Returned values will be in the [0.0, 1.0] range.
+ *
+ * Since: 2.10
+ */
+void
+gimp_color_wheel_get_color (GimpColorWheel *wheel,
+                            gdouble        *h,
+                            gdouble        *s,
+                            gdouble        *v)
+{
+  GimpColorWheelPrivate *priv;
+
+  g_return_if_fail (GIMP_IS_COLOR_WHEEL (wheel));
+
+  priv = wheel->priv;
+
+  if (h) *h = priv->h;
+  if (s) *s = priv->s;
+  if (v) *v = priv->v;
+}
+
+/**
+ * gimp_color_wheel_set_ring_fraction:
+ * @ring: A wheel color selector
+ * @fraction: Ring fraction
+ *
+ * Sets the ring fraction of a wheel color selector.
+ *
+ * Since: 2.10
+ */
+void
+gimp_color_wheel_set_ring_fraction (GimpColorWheel *hsv,
+                                    gdouble         fraction)
+{
+  GimpColorWheelPrivate *priv;
+
+  g_return_if_fail (GIMP_IS_COLOR_WHEEL (hsv));
+
+  priv = hsv->priv;
+
+  priv->ring_fraction = CLAMP (fraction, 0.01, 0.99);
+
+  gtk_widget_queue_draw (GTK_WIDGET (hsv));
+}
+
+/**
+ * gimp_color_wheel_get_ring_fraction:
+ * @ring: A wheel color selector
+ *
+ * Returns value: The ring fraction of the wheel color selector.
+ *
+ * Since: 2.10
+ */
+gdouble
+gimp_color_wheel_get_ring_fraction (GimpColorWheel *wheel)
+{
+  GimpColorWheelPrivate *priv;
+
+  g_return_val_if_fail (GIMP_IS_COLOR_WHEEL (wheel), DEFAULT_FRACTION);
+
+  priv = wheel->priv;
+
+  return priv->ring_fraction;
+}
+
+/**
+ * gimp_color_wheel_set_color_config:
+ * @wheel:  a #GimpColorWheel widget.
+ * @config: a #GimpColorConfig object.
+ *
+ * Sets the color management configuration to use with this color wheel.
+ *
+ * Since: 2.10
+ */
+void
+gimp_color_wheel_set_color_config (GimpColorWheel  *wheel,
+                                   GimpColorConfig *config)
+{
+  GimpColorWheelPrivate *priv;
+
+  g_return_if_fail (GIMP_IS_COLOR_WHEEL (wheel));
+  g_return_if_fail (config == NULL || GIMP_IS_COLOR_CONFIG (config));
+
+  priv = wheel->priv;
+
+  if (config != priv->config)
+    {
+      if (priv->config)
+        {
+          g_signal_handlers_disconnect_by_func (priv->config,
+                                                gimp_color_wheel_destroy_transform,
+                                                wheel);
+
+          gimp_color_wheel_destroy_transform (wheel);
+        }
+
+      g_set_object (&priv->config, config);
+
+      if (priv->config)
+        {
+          g_signal_connect_swapped (priv->config, "notify",
+                                    G_CALLBACK (gimp_color_wheel_destroy_transform),
+                                    wheel);
+        }
+    }
+}
+
+/**
+ * gimp_color_wheel_is_adjusting:
+ * @hsv: A #GimpColorWheel
+ *
+ * An HSV color selector can be said to be adjusting if multiple rapid
+ * changes are being made to its value, for example, when the user is
+ * adjusting the value with the mouse. This function queries whether
+ * the HSV color selector is being adjusted or not.
+ *
+ * Return value: %TRUE if clients can ignore changes to the color value,
+ *     since they may be transitory, or %FALSE if they should consider
+ *     the color value status to be final.
+ *
+ * Since: 2.10
+ */
+gboolean
+gimp_color_wheel_is_adjusting (GimpColorWheel *wheel)
+{
+  GimpColorWheelPrivate *priv;
+
+  g_return_val_if_fail (GIMP_IS_COLOR_WHEEL (wheel), FALSE);
+
+  priv = wheel->priv;
+
+  return priv->mode != DRAG_NONE;
+}
+
+static void
+gimp_color_wheel_move (GimpColorWheel   *wheel,
+                       GtkDirectionType  dir)
+{
+  GimpColorWheelPrivate *priv = wheel->priv;
+  gdouble                hue, sat, val;
+  gint                   hx, hy, sx, sy, vx, vy; /* HSV vertices */
+  gint                   x, y; /* position in triangle */
+
+  hue = priv->h;
+  sat = priv->s;
+  val = priv->v;
+
+  compute_triangle (wheel, &hx, &hy, &sx, &sy, &vx, &vy);
+
+  x = floor (sx + (vx - sx) * priv->v + (hx - vx) * priv->s * priv->v + 0.5);
+  y = floor (sy + (vy - sy) * priv->v + (hy - vy) * priv->s * priv->v + 0.5);
+
+#define HUE_DELTA 0.002
+  switch (dir)
+    {
+    case GTK_DIR_UP:
+      if (priv->focus_on_ring)
+        hue += HUE_DELTA;
+      else
+        {
+          y -= 1;
+          compute_sv (wheel, x, y, &sat, &val);
+        }
+      break;
+
+    case GTK_DIR_DOWN:
+      if (priv->focus_on_ring)
+        hue -= HUE_DELTA;
+      else
+        {
+          y += 1;
+          compute_sv (wheel, x, y, &sat, &val);
+        }
+      break;
+
+    case GTK_DIR_LEFT:
+      if (priv->focus_on_ring)
+        hue += HUE_DELTA;
+      else
+        {
+          x -= 1;
+          compute_sv (wheel, x, y, &sat, &val);
+        }
+      break;
+
+    case GTK_DIR_RIGHT:
+      if (priv->focus_on_ring)
+        hue -= HUE_DELTA
+          ;
+      else
+        {
+          x += 1;
+          compute_sv (wheel, x, y, &sat, &val);
+        }
+      break;
+
+    default:
+      /* we don't care about the tab directions */
+      break;
+    }
+
+  /* Wrap */
+  if (hue < 0.0)
+    hue = 1.0;
+  else if (hue > 1.0)
+    hue = 0.0;
+
+  gimp_color_wheel_set_color (wheel, hue, sat, val);
+}
+
+static void
+gimp_color_wheel_create_transform (GimpColorWheel *wheel)
+{
+  GimpColorWheelPrivate *priv = wheel->priv;
+
+  if (priv->config)
+    {
+      static GimpColorProfile *profile = NULL;
+
+      const Babl *format = babl_format ("cairo-RGB24");
+
+      if (G_UNLIKELY (! profile))
+        profile = gimp_color_profile_new_rgb_srgb ();
+
+      priv->transform = gimp_widget_get_color_transform (GTK_WIDGET (wheel),
+                                                         priv->config,
+                                                         profile,
+                                                         format,
+                                                         format);
+    }
+}
+
+static void
+gimp_color_wheel_destroy_transform (GimpColorWheel *wheel)
+{
+  GimpColorWheelPrivate *priv = wheel->priv;
+
+  if (priv->transform)
+    {
+      g_object_unref (priv->transform);
+      priv->transform = NULL;
+    }
+
+  gtk_widget_queue_draw (GTK_WIDGET (wheel));
+}
diff --git a/modules/gimpcolorwheel.h b/modules/gimpcolorwheel.h
new file mode 100644
index 0000000..bc4bcc7
--- /dev/null
+++ b/modules/gimpcolorwheel.h
@@ -0,0 +1,98 @@
+/* HSV color selector for GTK+
+ *
+ * Copyright (C) 1999 The Free Software Foundation
+ *
+ * Authors: Simon Budig <Simon.Budig@unix-ag.org> (original code)
+ *          Federico Mena-Quintero <federico@gimp.org> (cleanup for GTK+)
+ *          Jonathan Blandford <jrb@redhat.com> (cleanup for GTK+)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
+ * file for a list of people on the GTK+ Team.  See the ChangeLog
+ * files for a list of changes.  These files are distributed with
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+#ifndef __GIMP_COLOR_WHEEL_H__
+#define __GIMP_COLOR_WHEEL_H__
+
+G_BEGIN_DECLS
+
+#define GIMP_TYPE_COLOR_WHEEL            (gimp_color_wheel_get_type ())
+#define GIMP_COLOR_WHEEL(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_COLOR_WHEEL, GimpColorWheel))
+#define GIMP_COLOR_WHEEL_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_COLOR_WHEEL, GimpColorWheelClass))
+#define GIMP_IS_COLOR_WHEEL(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_COLOR_WHEEL))
+#define GIMP_IS_COLOR_WHEEL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_COLOR_WHEEL))
+#define GIMP_COLOR_WHEEL_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_COLOR_WHEEL, GimpColorWheelClass))
+
+
+typedef struct _GimpColorWheel      GimpColorWheel;
+typedef struct _GimpColorWheelClass GimpColorWheelClass;
+
+struct _GimpColorWheel
+{
+  GtkWidget parent_instance;
+
+  /* Private data */
+  gpointer priv;
+};
+
+struct _GimpColorWheelClass
+{
+  GtkWidgetClass parent_class;
+
+  /* Notification signals */
+  void (* changed) (GimpColorWheel   *wheel);
+
+  /* Keybindings */
+  void (* move)    (GimpColorWheel   *wheel,
+                    GtkDirectionType  type);
+
+  /* Padding for future expansion */
+  void (*_gimp_reserved1) (void);
+  void (*_gimp_reserved2) (void);
+  void (*_gimp_reserved3) (void);
+  void (*_gimp_reserved4) (void);
+};
+
+
+void        color_wheel_register_type          (GTypeModule     *module);
+
+GType       gimp_color_wheel_get_type          (void) G_GNUC_CONST;
+GtkWidget * gimp_color_wheel_new               (void);
+
+void        gimp_color_wheel_set_color         (GimpColorWheel  *wheel,
+                                                double           h,
+                                                double           s,
+                                                double           v);
+void        gimp_color_wheel_get_color         (GimpColorWheel  *wheel,
+                                                gdouble         *h,
+                                                gdouble         *s,
+                                                gdouble         *v);
+
+void        gimp_color_wheel_set_ring_fraction (GimpColorWheel  *wheel,
+                                                gdouble          fraction);
+gdouble     gimp_color_wheel_get_ring_fraction (GimpColorWheel  *wheel);
+
+void        gimp_color_wheel_set_color_config  (GimpColorWheel  *wheel,
+                                                GimpColorConfig *config);
+
+gboolean    gimp_color_wheel_is_adjusting      (GimpColorWheel  *wheel);
+
+G_END_DECLS
+
+#endif /* __GIMP_COLOR_WHEEL_H__ */
diff --git a/modules/gimpinputdevicestore-dx.c b/modules/gimpinputdevicestore-dx.c
new file mode 100644
index 0000000..66ca6f2
--- /dev/null
+++ b/modules/gimpinputdevicestore-dx.c
@@ -0,0 +1,482 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpinputdevicestore-dx.c
+ * Input device store based on DirectX.
+ * Copyright (C) 2007  Sven Neumann <sven@gimp.org>
+ * Copyright (C) 2007  Tor Lillqvist <tml@novell.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <gtk/gtk.h>
+
+#ifdef HAVE_DX_DINPUT
+#define _WIN32_WINNT 0x0501
+#include <windows.h>
+#define DIRECTINPUT_VERSION 0x0800
+#include <dinput.h>
+#include <rpc.h>
+
+#ifndef GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
+#define GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS 0x00000004
+#endif
+
+#include <gdk/gdkwin32.h>
+
+#include "libgimpmodule/gimpmodule.h"
+
+#include "gimpinputdevicestore.h"
+
+
+enum
+{
+  COLUMN_GUID,
+  COLUMN_LABEL,
+  COLUMN_IDEVICE,
+  NUM_COLUMNS
+};
+
+enum
+{
+  DEVICE_ADDED,
+  DEVICE_REMOVED,
+  LAST_SIGNAL
+};
+
+typedef struct _GimpInputDeviceStoreClass GimpInputDeviceStoreClass;
+
+struct _GimpInputDeviceStore
+{
+  GtkListStore    parent_instance;
+
+  GdkWindow      *window;
+
+  LPDIRECTINPUT8W directinput8;
+
+  GError         *error;
+};
+
+
+struct _GimpInputDeviceStoreClass
+{
+  GtkListStoreClass   parent_class;
+
+  void  (* device_added)   (GimpInputDeviceStore *store,
+                            const gchar          *udi);
+  void  (* device_removed) (GimpInputDeviceStore *store,
+                            const gchar          *udi);
+};
+
+
+static void      gimp_input_device_store_finalize (GObject              *object);
+
+static gboolean  gimp_input_device_store_add      (GimpInputDeviceStore *store,
+                                                   const GUID           *guid);
+static gboolean  gimp_input_device_store_remove   (GimpInputDeviceStore *store,
+                                                   const gchar          *udi);
+
+
+G_DEFINE_DYNAMIC_TYPE (GimpInputDeviceStore, gimp_input_device_store,
+                       GTK_TYPE_LIST_STORE)
+
+static guint store_signals[LAST_SIGNAL] = { 0 };
+
+
+void
+gimp_input_device_store_register_types (GTypeModule *module)
+{
+  gimp_input_device_store_register_type (module);
+}
+
+static void
+gimp_input_device_store_class_init (GimpInputDeviceStoreClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  store_signals[DEVICE_ADDED] =
+    g_signal_new ("device-added",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpInputDeviceStoreClass, device_added),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__STRING,
+                  G_TYPE_NONE, 1, G_TYPE_STRING);
+
+  store_signals[DEVICE_REMOVED] =
+    g_signal_new ("device-removed",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpInputDeviceStoreClass, device_removed),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__STRING,
+                  G_TYPE_NONE, 1, G_TYPE_STRING);
+
+  object_class->finalize = gimp_input_device_store_finalize;
+
+  klass->device_added    = NULL;
+  klass->device_removed  = NULL;
+}
+
+static void
+gimp_input_device_store_class_finalize (GimpInputDeviceStoreClass *klass)
+{
+}
+
+static GdkFilterReturn
+aux_window_filter (GdkXEvent *xevent,
+                   GdkEvent  *event,
+                   gpointer   data)
+{
+#if 0
+  GimpInputDeviceStore *store = (GimpInputDeviceStore *) data;
+  const MSG *msg = (MSG *) xevent;
+
+  /* Look for deviced being added or removed */
+  switch (msg->message)
+    {
+    }
+#endif
+
+  return GDK_FILTER_REMOVE;
+}
+
+static GdkWindow *
+create_aux_window (GimpInputDeviceStore *store)
+{
+  GdkWindowAttr wa;
+  GdkWindow *retval;
+
+  /* Create a dummy window to be associated with DirectInput devices */
+  wa.wclass = GDK_INPUT_OUTPUT;
+  wa.event_mask = GDK_ALL_EVENTS_MASK;
+  wa.width = 2;
+  wa.height = 2;
+  wa.x = -100;
+  wa.y = -100;
+  wa.window_type = GDK_WINDOW_TOPLEVEL;
+  if ((retval = gdk_window_new (NULL, &wa, GDK_WA_X|GDK_WA_Y)) == NULL)
+    return NULL;
+  g_object_ref (retval);
+
+  gdk_window_add_filter (retval, aux_window_filter, store);
+
+  return retval;
+}
+
+static BOOL CALLBACK
+enum_devices (const DIDEVICEINSTANCEW *di,
+              void                    *user_data)
+{
+  GimpInputDeviceStore *store = (GimpInputDeviceStore *) user_data;
+
+  gimp_input_device_store_add (store, &di->guidInstance);
+
+  return DIENUM_CONTINUE;
+}
+
+static void
+gimp_input_device_store_init (GimpInputDeviceStore *store)
+{
+  GType   types[] = { G_TYPE_STRING, G_TYPE_STRING, G_TYPE_POINTER };
+  HRESULT hresult;
+  HMODULE thismodule;
+  HMODULE dinput8;
+
+  typedef HRESULT (WINAPI *t_DirectInput8Create) (HINSTANCE, DWORD, REFIID, LPVOID *, LPUNKNOWN);
+  t_DirectInput8Create p_DirectInput8Create;
+
+  g_assert (G_N_ELEMENTS (types) == NUM_COLUMNS);
+
+  gtk_list_store_set_column_types (GTK_LIST_STORE (store),
+                                   G_N_ELEMENTS (types), types);
+
+  if (!GetModuleHandleEx (GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS,
+                          (LPCTSTR) &gimp_input_device_store_init,
+                          &thismodule))
+    return;
+
+  if ((store->window = create_aux_window (store)) == NULL)
+    {
+      g_set_error_literal (&store->error, GIMP_MODULE_ERROR, GIMP_MODULE_FAILED,
+			   "Could not create aux window");
+      return;
+    }
+
+  if ((dinput8 = LoadLibrary ("dinput8.dll")) == NULL)
+    {
+      g_set_error_literal (&store->error, GIMP_MODULE_ERROR, GIMP_MODULE_FAILED,
+			   "Could not load dinput8.dll");
+      return;
+    }
+
+  if ((p_DirectInput8Create = (t_DirectInput8Create) GetProcAddress (dinput8, "DirectInput8Create")) == NULL)
+    {
+      g_set_error_literal (&store->error, GIMP_MODULE_ERROR, GIMP_MODULE_FAILED,
+			   "Could not find DirectInput8Create in dinput8.dll");
+      return;
+    }
+
+  if (FAILED ((hresult = (*p_DirectInput8Create) (thismodule,
+                                                  DIRECTINPUT_VERSION,
+                                                  &IID_IDirectInput8W,
+                                                  (LPVOID *) &store->directinput8,
+                                                  NULL))))
+    {
+      g_set_error (&store->error, GIMP_MODULE_ERROR, GIMP_MODULE_FAILED,
+		   "DirectInput8Create failed: %s",
+		   g_win32_error_message (hresult));
+      return;
+    }
+
+  if (FAILED ((hresult = IDirectInput8_EnumDevices (store->directinput8,
+                                                    DI8DEVCLASS_GAMECTRL,
+                                                    enum_devices,
+                                                    store,
+                                                    DIEDFL_ATTACHEDONLY))))
+    {
+      g_set_error (&store->error, GIMP_MODULE_ERROR, GIMP_MODULE_FAILED,
+		   "IDirectInput8::EnumDevices failed: %s",
+		   g_win32_error_message (hresult));
+      return;
+    }
+}
+
+static void
+gimp_input_device_store_finalize (GObject *object)
+{
+  GimpInputDeviceStore *store = GIMP_INPUT_DEVICE_STORE (object);
+
+  if (store->directinput8)
+    {
+      IDirectInput8_Release (store->directinput8);
+      store->directinput8 = NULL;
+    }
+
+  if (store->error)
+    {
+      g_error_free (store->error);
+      store->error = NULL;
+    }
+
+  G_OBJECT_CLASS (gimp_input_device_store_parent_class)->finalize (object);
+}
+
+static gboolean
+gimp_input_device_store_lookup (GimpInputDeviceStore *store,
+                                const gchar          *guid,
+                                GtkTreeIter          *iter)
+{
+  GtkTreeModel *model = GTK_TREE_MODEL (store);
+  GValue        value = G_VALUE_INIT;
+  gboolean      iter_valid;
+
+  for (iter_valid = gtk_tree_model_get_iter_first (model, iter);
+       iter_valid;
+       iter_valid = gtk_tree_model_iter_next (model, iter))
+    {
+      const gchar *str;
+
+      gtk_tree_model_get_value (model, iter, COLUMN_GUID, &value);
+
+      str = g_value_get_string (&value);
+
+      if (strcmp (str, guid) == 0)
+        {
+          g_value_unset (&value);
+          break;
+        }
+
+      g_value_unset (&value);
+    }
+
+  return iter_valid;
+}
+
+/*  insert in alphabetic order  */
+static void
+gimp_input_device_store_insert (GimpInputDeviceStore  *store,
+                                const gchar           *guid,
+                                const gchar           *label,
+                                LPDIRECTINPUTDEVICE8W  didevice8)
+{
+  GtkTreeModel *model = GTK_TREE_MODEL (store);
+  GtkTreeIter   iter;
+  GValue        value = G_VALUE_INIT;
+  gint          pos   = 0;
+  gboolean      iter_valid;
+
+  for (iter_valid = gtk_tree_model_get_iter_first (model, &iter);
+       iter_valid;
+       iter_valid = gtk_tree_model_iter_next (model, &iter), pos++)
+    {
+      const gchar *str;
+
+      gtk_tree_model_get_value (model, &iter, COLUMN_LABEL, &value);
+
+      str = g_value_get_string (&value);
+
+      if (g_utf8_collate (label, str) < 0)
+        {
+          g_value_unset (&value);
+          break;
+        }
+
+      g_value_unset (&value);
+    }
+
+  gtk_list_store_insert_with_values (GTK_LIST_STORE (store), &iter, pos,
+                                     COLUMN_GUID,    guid,
+                                     COLUMN_LABEL,   label,
+                                     COLUMN_IDEVICE, didevice8,
+                                     -1);
+}
+
+static gboolean
+gimp_input_device_store_add (GimpInputDeviceStore *store,
+                             const GUID           *guid)
+{
+  HRESULT               hresult;
+  LPDIRECTINPUTDEVICE8W didevice8;
+  DIDEVICEINSTANCEW     di;
+  gboolean              added = FALSE;
+  unsigned char        *s;
+  gchar                *guidstring;
+  gchar                *name;
+
+  if (UuidToString (guid, &s) != S_OK)
+    return FALSE;
+  guidstring = g_strdup (s);
+  RpcStringFree (&s);
+
+  if (FAILED ((hresult = IDirectInput8_CreateDevice (store->directinput8,
+                                                     guid,
+                                                     &didevice8,
+                                                     NULL))))
+    {
+      g_free (guidstring);
+      return FALSE;
+    }
+
+  if (FAILED ((hresult = IDirectInputDevice8_SetCooperativeLevel (didevice8,
+                                                                  (HWND) gdk_win32_drawable_get_handle (store->window),
+                                                                  DISCL_NONEXCLUSIVE | DISCL_BACKGROUND))))
+    {
+      g_warning ("IDirectInputDevice8::SetCooperativeLevel failed: %s",
+                 g_win32_error_message (hresult));
+      g_free (guidstring);
+      return FALSE;
+    }
+
+  di.dwSize = sizeof (DIDEVICEINSTANCEW);
+  if (FAILED ((hresult = IDirectInputDevice8_GetDeviceInfo (didevice8,
+                                                            &di))))
+    {
+      g_warning ("IDirectInputDevice8::GetDeviceInfo failed: %s",
+                 g_win32_error_message (hresult));
+      g_free (guidstring);
+      return FALSE;
+    }
+
+  name = g_utf16_to_utf8 (di.tszInstanceName, -1, NULL, NULL, NULL);
+  gimp_input_device_store_insert (store, guidstring, name, didevice8);
+
+  return added;
+}
+
+static gboolean
+gimp_input_device_store_remove (GimpInputDeviceStore *store,
+                                const gchar          *guid)
+{
+  GtkTreeIter  iter;
+
+  if (gimp_input_device_store_lookup (store, guid, &iter))
+    {
+      gtk_list_store_remove (GTK_LIST_STORE (store), &iter);
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+#if 0
+
+static void
+gimp_input_device_store_device_added (LibHalContext *ctx,
+                                      const char    *guid)
+{
+  GimpInputDeviceStore *store = libhal_ctx_get_user_data (ctx);
+
+  if (gimp_input_device_store_add (store, udi))
+    {
+      g_signal_emit (store, store_signals[DEVICE_ADDED], 0, udi);
+    }
+}
+
+static void
+gimp_input_device_store_device_removed (LibHalContext *ctx,
+                                        const char    *udi)
+{
+  GimpInputDeviceStore *store = libhal_ctx_get_user_data (ctx);
+
+  if (gimp_input_device_store_remove (store, udi))
+    {
+      g_signal_emit (store, store_signals[DEVICE_REMOVED], 0, udi);
+    }
+}
+
+#endif
+
+GimpInputDeviceStore *
+gimp_input_device_store_new (void)
+{
+  return g_object_new (GIMP_TYPE_INPUT_DEVICE_STORE, NULL);
+}
+
+gchar *
+gimp_input_device_store_get_device_file (GimpInputDeviceStore *store,
+                                         const gchar          *udi)
+{
+  GtkTreeIter iter;
+  GValue      value = G_VALUE_INIT;
+
+  g_return_val_if_fail (GIMP_IS_INPUT_DEVICE_STORE (store), NULL);
+  g_return_val_if_fail (udi != NULL, NULL);
+
+  if (! store->directinput8)
+    return NULL;
+
+  if (gimp_input_device_store_lookup (store, udi, &iter))
+    {
+      gtk_tree_model_get_value (GTK_TREE_MODEL (store),
+                                &iter, COLUMN_IDEVICE, &value);
+      return g_value_get_pointer (&value);
+    }
+
+  return NULL;
+}
+
+GError *
+gimp_input_device_store_get_error (GimpInputDeviceStore  *store)
+{
+  g_return_val_if_fail (GIMP_IS_INPUT_DEVICE_STORE (store), NULL);
+
+  return store->error ? g_error_copy (store->error) : NULL;
+}
+
+#endif /* HAVE_DX_DINPUT */
diff --git a/modules/gimpinputdevicestore-gudev.c b/modules/gimpinputdevicestore-gudev.c
new file mode 100644
index 0000000..4c54474
--- /dev/null
+++ b/modules/gimpinputdevicestore-gudev.c
@@ -0,0 +1,441 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpinputdevicestore-gudev.c
+ * Input device store based on GUdev, the hardware abstraction layer.
+ * Copyright (C) 2007  Sven Neumann <sven@gimp.org>
+ *               2011  Michael Natterer <mitch@gimp.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <gtk/gtk.h>
+
+#include "gimpinputdevicestore.h"
+
+#include "libgimpmodule/gimpmodule.h"
+
+
+#ifdef HAVE_LIBGUDEV
+
+#include <gudev/gudev.h>
+
+enum
+{
+  COLUMN_IDENTIFIER,
+  COLUMN_LABEL,
+  COLUMN_DEVICE_FILE,
+  NUM_COLUMNS
+};
+
+enum
+{
+  PROP_0,
+  PROP_CONSTRUCT_ERROR
+};
+
+enum
+{
+  DEVICE_ADDED,
+  DEVICE_REMOVED,
+  LAST_SIGNAL
+};
+
+typedef struct _GimpInputDeviceStoreClass GimpInputDeviceStoreClass;
+
+struct _GimpInputDeviceStore
+{
+  GtkListStore  parent_instance;
+
+  GUdevClient  *client;
+  GError       *error;
+};
+
+
+struct _GimpInputDeviceStoreClass
+{
+  GtkListStoreClass   parent_class;
+
+  void  (* device_added)   (GimpInputDeviceStore *store,
+                            const gchar          *identifier);
+  void  (* device_removed) (GimpInputDeviceStore *store,
+                            const gchar          *identifier);
+};
+
+
+static void      gimp_input_device_store_finalize   (GObject              *object);
+
+static gboolean  gimp_input_device_store_add        (GimpInputDeviceStore *store,
+                                                     GUdevDevice          *device);
+static gboolean  gimp_input_device_store_remove     (GimpInputDeviceStore *store,
+                                                     GUdevDevice          *device);
+
+static void      gimp_input_device_store_uevent     (GUdevClient          *client,
+                                                     const gchar          *action,
+                                                     GUdevDevice          *device,
+                                                     GimpInputDeviceStore *store);
+
+
+G_DEFINE_DYNAMIC_TYPE (GimpInputDeviceStore, gimp_input_device_store,
+                       GTK_TYPE_LIST_STORE)
+
+static guint store_signals[LAST_SIGNAL] = { 0 };
+
+
+void
+gimp_input_device_store_register_types (GTypeModule *module)
+{
+  gimp_input_device_store_register_type (module);
+}
+
+static void
+gimp_input_device_store_class_init (GimpInputDeviceStoreClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  store_signals[DEVICE_ADDED] =
+    g_signal_new ("device-added",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpInputDeviceStoreClass, device_added),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__STRING,
+                  G_TYPE_NONE, 1, G_TYPE_STRING);
+
+  store_signals[DEVICE_REMOVED] =
+    g_signal_new ("device-removed",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST,
+                  G_STRUCT_OFFSET (GimpInputDeviceStoreClass, device_removed),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__STRING,
+                  G_TYPE_NONE, 1, G_TYPE_STRING);
+
+  object_class->finalize = gimp_input_device_store_finalize;
+
+  klass->device_added    = NULL;
+  klass->device_removed  = NULL;
+}
+
+static void
+gimp_input_device_store_class_finalize (GimpInputDeviceStoreClass *klass)
+{
+}
+
+static void
+gimp_input_device_store_init (GimpInputDeviceStore *store)
+{
+  GType        types[]      = { G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING };
+  const gchar *subsystems[] = { "input", NULL };
+  GList       *devices;
+  GList       *list;
+
+  gtk_list_store_set_column_types (GTK_LIST_STORE (store),
+                                   G_N_ELEMENTS (types), types);
+
+  store->client = g_udev_client_new (subsystems);
+
+  devices = g_udev_client_query_by_subsystem (store->client, "input");
+
+  for (list = devices; list; list = g_list_next (list))
+    {
+      GUdevDevice *device = list->data;
+
+      gimp_input_device_store_add (store, device);
+      g_object_unref (device);
+    }
+
+  g_list_free (devices);
+
+  g_signal_connect (store->client, "uevent",
+                    G_CALLBACK (gimp_input_device_store_uevent),
+                    store);
+}
+
+static void
+gimp_input_device_store_finalize (GObject *object)
+{
+  GimpInputDeviceStore *store = GIMP_INPUT_DEVICE_STORE (object);
+
+  if (store->client)
+    {
+      g_object_unref (store->client);
+      store->client = NULL;
+    }
+
+  if (store->error)
+    {
+      g_error_free (store->error);
+      store->error = NULL;
+    }
+
+  G_OBJECT_CLASS (gimp_input_device_store_parent_class)->finalize (object);
+}
+
+static gboolean
+gimp_input_device_store_lookup (GimpInputDeviceStore *store,
+                                const gchar          *identifier,
+                                GtkTreeIter          *iter)
+{
+  GtkTreeModel *model = GTK_TREE_MODEL (store);
+  GValue        value = G_VALUE_INIT;
+  gboolean      iter_valid;
+
+  for (iter_valid = gtk_tree_model_get_iter_first (model, iter);
+       iter_valid;
+       iter_valid = gtk_tree_model_iter_next (model, iter))
+    {
+      const gchar *str;
+
+      gtk_tree_model_get_value (model, iter, COLUMN_IDENTIFIER, &value);
+
+      str = g_value_get_string (&value);
+
+      if (strcmp (str, identifier) == 0)
+        {
+          g_value_unset (&value);
+          break;
+        }
+
+      g_value_unset (&value);
+    }
+
+  return iter_valid;
+}
+
+/*  insert in alphabetic order  */
+static void
+gimp_input_device_store_insert (GimpInputDeviceStore *store,
+                                const gchar          *identifier,
+                                const gchar          *label,
+                                const gchar          *device_file)
+{
+  GtkTreeModel *model = GTK_TREE_MODEL (store);
+  GtkTreeIter   iter;
+  GValue        value = G_VALUE_INIT;
+  gint          pos   = 0;
+  gboolean      iter_valid;
+
+  for (iter_valid = gtk_tree_model_get_iter_first (model, &iter);
+       iter_valid;
+       iter_valid = gtk_tree_model_iter_next (model, &iter), pos++)
+    {
+      const gchar *str;
+
+      gtk_tree_model_get_value (model, &iter, COLUMN_LABEL, &value);
+
+      str = g_value_get_string (&value);
+
+      if (g_utf8_collate (label, str) < 0)
+        {
+          g_value_unset (&value);
+          break;
+        }
+
+      g_value_unset (&value);
+    }
+
+  gtk_list_store_insert_with_values (GTK_LIST_STORE (store), &iter, pos,
+                                     COLUMN_IDENTIFIER,  identifier,
+                                     COLUMN_LABEL,       label,
+                                     COLUMN_DEVICE_FILE, device_file,
+                                     -1);
+}
+
+static gboolean
+gimp_input_device_store_add (GimpInputDeviceStore *store,
+                             GUdevDevice          *device)
+{
+  const gchar *device_file = g_udev_device_get_device_file (device);
+#if 0
+  const gchar *path        = g_udev_device_get_sysfs_path (device);
+#endif
+  const gchar *name        = g_udev_device_get_sysfs_attr (device, "name");
+
+#if 0
+  g_printerr ("\ndevice added: %s, %s, %s\n",
+              name ? name : "NULL",
+              device_file ? device_file : "NULL",
+              path);
+#endif
+
+  if (device_file)
+    {
+      if (name)
+        {
+          GtkTreeIter unused;
+
+          if (! gimp_input_device_store_lookup (store, name, &unused))
+            {
+              gimp_input_device_store_insert (store, name, name, device_file);
+
+              g_signal_emit (store, store_signals[DEVICE_ADDED], 0,
+                             name);
+
+              return TRUE;
+            }
+        }
+      else
+        {
+          GUdevDevice *parent = g_udev_device_get_parent (device);
+
+          if (parent)
+            {
+              const gchar *parent_name;
+
+              parent_name = g_udev_device_get_sysfs_attr (parent, "name");
+
+              if (parent_name)
+                {
+                  GtkTreeIter unused;
+
+                  if (! gimp_input_device_store_lookup (store, parent_name,
+                                                        &unused))
+                    {
+                      gimp_input_device_store_insert (store,
+                                                      parent_name, parent_name,
+                                                      device_file);
+
+                      g_signal_emit (store, store_signals[DEVICE_ADDED], 0,
+                                     parent_name);
+
+                      g_object_unref (parent);
+                      return TRUE;
+                    }
+                }
+
+              g_object_unref (parent);
+            }
+        }
+    }
+
+  return FALSE;
+}
+
+static gboolean
+gimp_input_device_store_remove (GimpInputDeviceStore *store,
+                                GUdevDevice          *device)
+{
+  const gchar *name = g_udev_device_get_sysfs_attr (device, "name");
+  GtkTreeIter  iter;
+
+  if (name)
+    {
+      if (gimp_input_device_store_lookup (store, name, &iter))
+        {
+          gtk_list_store_remove (GTK_LIST_STORE (store), &iter);
+
+          g_signal_emit (store, store_signals[DEVICE_REMOVED], 0, name);
+
+          return TRUE;
+        }
+    }
+
+  return FALSE;
+}
+
+static void
+gimp_input_device_store_uevent (GUdevClient          *client,
+                                const gchar          *action,
+                                GUdevDevice          *device,
+                                GimpInputDeviceStore *store)
+{
+  if (! strcmp (action, "add"))
+    {
+      gimp_input_device_store_add (store, device);
+    }
+  else if (! strcmp (action, "remove"))
+    {
+      gimp_input_device_store_remove (store, device);
+    }
+}
+
+GimpInputDeviceStore *
+gimp_input_device_store_new (void)
+{
+  return g_object_new (GIMP_TYPE_INPUT_DEVICE_STORE, NULL);
+}
+
+gchar *
+gimp_input_device_store_get_device_file (GimpInputDeviceStore *store,
+                                         const gchar          *identifier)
+{
+  GtkTreeIter iter;
+
+  g_return_val_if_fail (GIMP_IS_INPUT_DEVICE_STORE (store), NULL);
+  g_return_val_if_fail (identifier != NULL, NULL);
+
+  if (! store->client)
+    return NULL;
+
+  if (gimp_input_device_store_lookup (store, identifier, &iter))
+    {
+      GtkTreeModel *model = GTK_TREE_MODEL (store);
+      gchar        *device_file;
+
+      gtk_tree_model_get (model, &iter,
+                          COLUMN_DEVICE_FILE, &device_file,
+                          -1);
+
+      return device_file;
+    }
+
+  return NULL;
+}
+
+GError *
+gimp_input_device_store_get_error (GimpInputDeviceStore  *store)
+{
+  g_return_val_if_fail (GIMP_IS_INPUT_DEVICE_STORE (store), NULL);
+
+  return store->error ? g_error_copy (store->error) : NULL;
+}
+
+#else /* HAVE_LIBGUDEV */
+
+void
+gimp_input_device_store_register_types (GTypeModule *module)
+{
+}
+
+GType
+gimp_input_device_store_get_type (void)
+{
+  return G_TYPE_NONE;
+}
+
+GimpInputDeviceStore *
+gimp_input_device_store_new (void)
+{
+  return NULL;
+}
+
+gchar *
+gimp_input_device_store_get_device_file (GimpInputDeviceStore *store,
+                                         const gchar          *identifier)
+{
+  return NULL;
+}
+
+GError *
+gimp_input_device_store_get_error (GimpInputDeviceStore  *store)
+{
+  return NULL;
+}
+
+#endif /* HAVE_LIBGUDEV */
diff --git a/modules/gimpinputdevicestore.h b/modules/gimpinputdevicestore.h
new file mode 100644
index 0000000..a02d453
--- /dev/null
+++ b/modules/gimpinputdevicestore.h
@@ -0,0 +1,42 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpinputdevicestore.h
+ * Copyright (C) 2007  Sven Neumann <sven@gimp.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GIMP_INPUT_DEVICE_STORE_H__
+#define __GIMP_INPUT_DEVICE_STORE_H__
+
+
+#define GIMP_TYPE_INPUT_DEVICE_STORE    (gimp_input_device_store_get_type ())
+#define GIMP_INPUT_DEVICE_STORE(obj)    (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_INPUT_DEVICE_STORE, GimpInputDeviceStore))
+#define GIMP_IS_INPUT_DEVICE_STORE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_INPUT_DEVICE_STORE))
+
+typedef struct _GimpInputDeviceStore GimpInputDeviceStore;
+
+
+void                   gimp_input_device_store_register_types  (GTypeModule           *module);
+
+GType                  gimp_input_device_store_get_type        (void);
+
+GimpInputDeviceStore * gimp_input_device_store_new             (void);
+gchar                * gimp_input_device_store_get_device_file (GimpInputDeviceStore  *store,
+                                                                const gchar           *udi);
+GError               * gimp_input_device_store_get_error       (GimpInputDeviceStore  *store);
+
+
+#endif  /* __GIMP_INPUT_DEVICE_STORE_H__ */
author	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-04-07 18:30:19 +0000
committer	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-04-07 18:30:19 +0000
commit	5c1676dfe6d2f3c837a5e074117b45613fd29a72 (patch)
tree	cbffb45144febf451e54061db2b21395faf94bfe /modules
parent	Initial commit. (diff)
download	gimp-5c1676dfe6d2f3c837a5e074117b45613fd29a72.tar.xz gimp-5c1676dfe6d2f3c837a5e074117b45613fd29a72.zip