Adding upstream version 2.10.36.upstream/2.10.36

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 317 insertions, 0 deletions

diff --git a/app/widgets/gimphistogrambox.c b/app/widgets/gimphistogrambox.c
new file mode 100644
index 0000000..f2d291b
--- /dev/null
+++ b/app/widgets/gimphistogrambox.c
@@ -0,0 +1,317 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * 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 "libgimpmath/gimpmath.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "widgets-types.h"
+
+#include "core/gimphistogram.h"
+
+#include "gimpcolorbar.h"
+#include "gimphandlebar.h"
+#include "gimphistogrambox.h"
+#include "gimphistogramview.h"
+
+#include "gimp-intl.h"
+
+
+/*  #define DEBUG_VIEW  */
+
+#define GRADIENT_HEIGHT  12
+#define CONTROL_HEIGHT   10
+
+
+/*  local function prototypes  */
+
+static void   gimp_histogram_box_low_adj_update  (GtkAdjustment     *adj,
+                                                  GimpHistogramBox  *box);
+static void   gimp_histogram_box_high_adj_update (GtkAdjustment     *adj,
+                                                  GimpHistogramBox  *box);
+static void   gimp_histogram_box_histogram_range (GimpHistogramView *view,
+                                                  gint               start,
+                                                  gint               end,
+                                                  GimpHistogramBox  *box);
+static void   gimp_histogram_box_channel_notify  (GimpHistogramView *view,
+                                                  GParamSpec        *pspec,
+                                                  GimpHistogramBox  *box);
+static void   gimp_histogram_box_border_notify   (GimpHistogramView *view,
+                                                  GParamSpec        *pspec,
+                                                  GimpHistogramBox  *box);
+
+
+G_DEFINE_TYPE (GimpHistogramBox, gimp_histogram_box, GTK_TYPE_BOX)
+
+
+static void
+gimp_histogram_box_class_init (GimpHistogramBoxClass *klass)
+{
+}
+
+static void
+gimp_histogram_box_init (GimpHistogramBox *box)
+{
+  GtkWidget *hbox;
+  GtkWidget *vbox;
+  GtkWidget *vbox2;
+  GtkWidget *frame;
+  GtkWidget *view;
+  GtkWidget *bar;
+
+  box->n_bins = 256;
+
+  gtk_orientable_set_orientation (GTK_ORIENTABLE (box),
+                                  GTK_ORIENTATION_VERTICAL);
+
+  gtk_box_set_spacing (GTK_BOX (box), 2);
+
+  frame = gtk_frame_new (NULL);
+  gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
+  gtk_box_pack_start (GTK_BOX (box), frame, TRUE, TRUE, 0);
+  gtk_widget_show (frame);
+
+  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
+  gtk_container_add (GTK_CONTAINER (frame), vbox);
+  gtk_widget_show (vbox);
+
+  /*  The histogram  */
+  view = gimp_histogram_view_new (TRUE);
+  gtk_box_pack_start (GTK_BOX (vbox), view, TRUE, TRUE, 0);
+  gtk_widget_show (view);
+
+  g_signal_connect (view, "range-changed",
+                    G_CALLBACK (gimp_histogram_box_histogram_range),
+                    box);
+
+  box->view = GIMP_HISTOGRAM_VIEW (view);
+
+  /*  The gradient below the histogram */
+  vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
+  gtk_container_set_border_width (GTK_CONTAINER (vbox2),
+                                  GIMP_HISTOGRAM_VIEW (view)->border_width);
+  gtk_box_pack_start (GTK_BOX (vbox), vbox2, FALSE, FALSE, 0);
+  gtk_widget_show (vbox2);
+
+  box->color_bar = bar = g_object_new (GIMP_TYPE_COLOR_BAR,
+                                       "histogram-channel", box->view->channel,
+                                       NULL);
+  gtk_widget_set_size_request (bar, -1, GRADIENT_HEIGHT);
+  gtk_box_pack_start (GTK_BOX (vbox2), bar, FALSE, FALSE, 0);
+  gtk_widget_show (bar);
+
+  g_signal_connect (view, "notify::histogram-channel",
+                    G_CALLBACK (gimp_histogram_box_channel_notify),
+                    box);
+  g_signal_connect (view, "notify::border-width",
+                    G_CALLBACK (gimp_histogram_box_border_notify),
+                    box);
+
+  box->slider_bar = bar = g_object_new (GIMP_TYPE_HANDLE_BAR, NULL);
+  gtk_widget_set_size_request (bar, -1, CONTROL_HEIGHT);
+  gtk_box_pack_start (GTK_BOX (vbox2), bar, FALSE, FALSE, 0);
+  gtk_widget_show (bar);
+
+  gimp_handle_bar_connect_events (GIMP_HANDLE_BAR (box->slider_bar),
+                                  box->color_bar);
+
+  /*  The range selection */
+  hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+  gtk_box_pack_start (GTK_BOX (box), hbox, FALSE, FALSE, 0);
+  gtk_widget_show (hbox);
+
+  /*  low spinbutton  */
+  box->low_adj = (GtkAdjustment *)
+    gtk_adjustment_new (0.0, 0.0, 255.0, 1.0, 16.0, 0.0);
+  box->low_spinbutton = gimp_spin_button_new (box->low_adj, 1.0, 0);
+  gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (box->low_spinbutton), TRUE);
+  gtk_box_pack_start (GTK_BOX (hbox), box->low_spinbutton, FALSE, FALSE, 0);
+  gtk_widget_show (box->low_spinbutton);
+
+  g_signal_connect (box->low_adj, "value-changed",
+                    G_CALLBACK (gimp_histogram_box_low_adj_update),
+                    box);
+
+  gimp_handle_bar_set_adjustment (GIMP_HANDLE_BAR (bar), 0,
+                                  GTK_ADJUSTMENT (box->low_adj));
+
+  /*  high spinbutton  */
+  box->high_adj = (GtkAdjustment *)
+    gtk_adjustment_new (255.0, 0.0, 255.0, 1.0, 16.0, 0.0);
+  box->high_spinbutton = gimp_spin_button_new (box->high_adj, 1.0, 0);
+  gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (box->high_spinbutton), TRUE);
+  gtk_box_pack_end (GTK_BOX (hbox), box->high_spinbutton, FALSE, FALSE, 0);
+  gtk_widget_show (box->high_spinbutton);
+
+  g_signal_connect (box->high_adj, "value-changed",
+                    G_CALLBACK (gimp_histogram_box_high_adj_update),
+                    box);
+
+  gimp_handle_bar_set_adjustment (GIMP_HANDLE_BAR (bar), 2,
+                                  GTK_ADJUSTMENT (box->high_adj));
+
+#ifdef DEBUG_VIEW
+  spinbutton = gimp_prop_spin_button_new (G_OBJECT (box->view), "border-width",
+                                          1, 5, 0);
+  gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
+  gtk_widget_show (spinbutton);
+
+  spinbutton = gimp_prop_spin_button_new (G_OBJECT (box->view), "subdivisions",
+                                          1, 5, 0);
+  gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
+  gtk_widget_show (spinbutton);
+#endif
+}
+
+static void
+gimp_histogram_box_low_adj_update (GtkAdjustment    *adjustment,
+                                   GimpHistogramBox *box)
+{
+  gdouble value = gtk_adjustment_get_value (adjustment);
+
+  gtk_adjustment_set_lower (box->high_adj, value);
+
+  if (box->n_bins != 256)
+    value *= box->n_bins - 1;
+
+  value = ROUND (value);
+
+  if (box->view->start != value)
+    gimp_histogram_view_set_range (box->view, value, box->view->end);
+}
+
+static void
+gimp_histogram_box_high_adj_update (GtkAdjustment    *adjustment,
+                                    GimpHistogramBox *box)
+{
+  gdouble value = gtk_adjustment_get_value (adjustment);
+
+  gtk_adjustment_set_upper (box->low_adj, value);
+
+  if (box->n_bins != 256)
+    value *= box->n_bins - 1;
+
+  value = ROUND (value);
+
+  if (box->view->end != value)
+    gimp_histogram_view_set_range (box->view, box->view->start, value);
+}
+
+static void
+gimp_histogram_box_histogram_range (GimpHistogramView *view,
+                                    gint               start,
+                                    gint               end,
+                                    GimpHistogramBox  *box)
+{
+  gdouble s = start;
+  gdouble e = end;
+
+  if (box->n_bins != view->n_bins)
+    {
+      gdouble upper;
+      gdouble page_increment;
+      gdouble step_increment;
+      guint   digits;
+
+      box->n_bins = view->n_bins;
+
+      if (box->n_bins == 256)
+        {
+          digits         = 0;
+          upper          = 255.0;
+          step_increment = 1.0;
+          page_increment = 16.0;
+        }
+      else
+        {
+          digits         = 3;
+          upper          = 1.0;
+          step_increment = 0.01;
+          page_increment = 0.1;
+        }
+
+      g_object_set (G_OBJECT (box->high_adj),
+                    "upper", upper,
+                    "step-increment", step_increment,
+                    "page-increment", page_increment,
+                    NULL);
+
+      gtk_spin_button_set_digits (GTK_SPIN_BUTTON (box->high_spinbutton), digits);
+
+      g_object_set (G_OBJECT (box->low_adj),
+                    "step-increment", step_increment,
+                    "page-increment", page_increment,
+                    NULL);
+
+      gtk_spin_button_set_digits (GTK_SPIN_BUTTON (box->low_spinbutton), digits);
+    }
+
+  if (box->n_bins != 256)
+    {
+      s /= box->n_bins - 1;
+      e /= box->n_bins - 1;
+    }
+
+  gtk_adjustment_set_lower (box->high_adj, s);
+  gtk_adjustment_set_upper (box->low_adj,  e);
+
+  gtk_adjustment_set_value (box->low_adj,  s);
+  gtk_adjustment_set_value (box->high_adj, e);
+}
+
+static void
+gimp_histogram_box_channel_notify (GimpHistogramView *view,
+                                   GParamSpec        *pspec,
+                                   GimpHistogramBox  *box)
+{
+  gimp_color_bar_set_channel (GIMP_COLOR_BAR (box->color_bar), view->channel);
+}
+
+static void
+gimp_histogram_box_border_notify (GimpHistogramView *view,
+                                  GParamSpec        *pspec,
+                                  GimpHistogramBox  *box)
+{
+  GtkWidget *vbox = gtk_widget_get_parent (box->color_bar);
+
+  gtk_container_set_border_width (GTK_CONTAINER (vbox), view->border_width);
+}
+
+
+/*  public functions  */
+
+GtkWidget *
+gimp_histogram_box_new (void)
+{
+  return g_object_new (GIMP_TYPE_HISTOGRAM_BOX, NULL);
+}
+
+void
+gimp_histogram_box_set_channel (GimpHistogramBox     *box,
+                                GimpHistogramChannel  channel)
+{
+  g_return_if_fail (GIMP_IS_HISTOGRAM_BOX (box));
+
+  if (box->view)
+    gimp_histogram_view_set_channel (box->view, channel);
+}