Adding upstream version 2.10.22.upstream/2.10.22upstream

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

1 files changed, 887 insertions, 0 deletions

diff --git a/app/display/gimpcursorview.c b/app/display/gimpcursorview.c
new file mode 100644
index 0000000..846df91
--- /dev/null
+++ b/app/display/gimpcursorview.c
@@ -0,0 +1,887 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpcursorview.c
+ * Copyright (C) 2005-2016 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 <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "display-types.h"
+
+#include "config/gimpcoreconfig.h"
+
+#include "core/gimp.h"
+#include "core/gimpcontext.h"
+#include "core/gimpimage.h"
+#include "core/gimpimage-pick-color.h"
+#include "core/gimpitem.h"
+
+#include "widgets/gimpcolorframe.h"
+#include "widgets/gimpdocked.h"
+#include "widgets/gimpmenufactory.h"
+#include "widgets/gimpsessioninfo-aux.h"
+
+#include "gimpcursorview.h"
+#include "gimpdisplay.h"
+#include "gimpdisplayshell.h"
+
+#include "gimp-intl.h"
+
+
+enum
+{
+  PROP_0,
+  PROP_SAMPLE_MERGED
+};
+
+
+struct _GimpCursorViewPrivate
+{
+  GimpEditor        parent_instance;
+
+  GtkWidget        *coord_hbox;
+  GtkWidget        *selection_hbox;
+  GtkWidget        *color_hbox;
+
+  GtkWidget        *pixel_x_label;
+  GtkWidget        *pixel_y_label;
+  GtkWidget        *unit_x_label;
+  GtkWidget        *unit_y_label;
+  GtkWidget        *selection_x_label;
+  GtkWidget        *selection_y_label;
+  GtkWidget        *selection_width_label;
+  GtkWidget        *selection_height_label;
+  GtkWidget        *color_frame_1;
+  GtkWidget        *color_frame_2;
+
+  gboolean          sample_merged;
+
+  GimpContext      *context;
+  GimpDisplayShell *shell;
+  GimpImage        *image;
+  GimpUnit          unit;
+
+  guint             cursor_idle_id;
+  GimpImage        *cursor_image;
+  GimpUnit          cursor_unit;
+  gdouble           cursor_x;
+  gdouble           cursor_y;
+};
+
+
+static void       gimp_cursor_view_docked_iface_init     (GimpDockedInterface *iface);
+
+static void       gimp_cursor_view_dispose               (GObject             *object);
+static void       gimp_cursor_view_set_property          (GObject             *object,
+                                                          guint                property_id,
+                                                          const GValue        *value,
+                                                          GParamSpec          *pspec);
+static void       gimp_cursor_view_get_property          (GObject             *object,
+                                                          guint                property_id,
+                                                          GValue              *value,
+                                                          GParamSpec          *pspec);
+
+static void       gimp_cursor_view_style_set             (GtkWidget           *widget,
+                                                          GtkStyle            *prev_style);
+
+static void       gimp_cursor_view_set_aux_info          (GimpDocked          *docked,
+                                                          GList               *aux_info);
+static GList    * gimp_cursor_view_get_aux_info          (GimpDocked          *docked);
+
+static void       gimp_cursor_view_set_context           (GimpDocked          *docked,
+                                                          GimpContext         *context);
+static void       gimp_cursor_view_image_changed         (GimpCursorView      *view,
+                                                          GimpImage           *image,
+                                                          GimpContext         *context);
+static void       gimp_cursor_view_mask_changed          (GimpCursorView      *view,
+                                                          GimpImage           *image);
+static void       gimp_cursor_view_diplay_changed        (GimpCursorView      *view,
+                                                          GimpDisplay         *display,
+                                                          GimpContext         *context);
+static void       gimp_cursor_view_shell_unit_changed    (GimpCursorView      *view,
+                                                          GParamSpec          *pspec,
+                                                          GimpDisplayShell    *shell);
+static void       gimp_cursor_view_format_as_unit        (GimpUnit             unit,
+                                                          gchar               *output_buf,
+                                                          gint                 output_buf_size,
+                                                          gdouble              pixel_value,
+                                                          gdouble              image_res);
+static void       gimp_cursor_view_set_label_italic      (GtkWidget           *label,
+                                                          gboolean             italic);
+static void       gimp_cursor_view_update_selection_info (GimpCursorView      *view,
+                                                          GimpImage           *image,
+                                                          GimpUnit             unit);
+static gboolean   gimp_cursor_view_cursor_idle           (GimpCursorView      *view);
+
+
+G_DEFINE_TYPE_WITH_CODE (GimpCursorView, gimp_cursor_view, GIMP_TYPE_EDITOR,
+                         G_ADD_PRIVATE (GimpCursorView)
+                         G_IMPLEMENT_INTERFACE (GIMP_TYPE_DOCKED,
+                                                gimp_cursor_view_docked_iface_init))
+
+#define parent_class gimp_cursor_view_parent_class
+
+static GimpDockedInterface *parent_docked_iface = NULL;
+
+
+static void
+gimp_cursor_view_class_init (GimpCursorViewClass* klass)
+{
+  GObjectClass   *object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  object_class->dispose      = gimp_cursor_view_dispose;
+  object_class->get_property = gimp_cursor_view_get_property;
+  object_class->set_property = gimp_cursor_view_set_property;
+
+  widget_class->style_set    = gimp_cursor_view_style_set;
+
+  g_object_class_install_property (object_class, PROP_SAMPLE_MERGED,
+                                   g_param_spec_boolean ("sample-merged",
+                                                         NULL, NULL,
+                                                         TRUE,
+                                                         GIMP_PARAM_READWRITE |
+                                                         G_PARAM_CONSTRUCT));
+}
+
+static void
+gimp_cursor_view_init (GimpCursorView *view)
+{
+  GtkWidget *frame;
+  GtkWidget *table;
+  GtkWidget *toggle;
+  gint       content_spacing;
+
+  view->priv = gimp_cursor_view_get_instance_private (view);
+
+  view->priv->sample_merged  = TRUE;
+  view->priv->context        = NULL;
+  view->priv->shell          = NULL;
+  view->priv->image          = NULL;
+  view->priv->unit           = GIMP_UNIT_PIXEL;
+  view->priv->cursor_idle_id = 0;
+
+  gtk_widget_style_get (GTK_WIDGET (view),
+                        "content-spacing", &content_spacing,
+                        NULL);
+
+
+  /* cursor information */
+
+  view->priv->coord_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL,
+                                        content_spacing);
+  gtk_box_set_homogeneous (GTK_BOX (view->priv->coord_hbox), TRUE);
+  gtk_box_pack_start (GTK_BOX (view), view->priv->coord_hbox,
+                      FALSE, FALSE, 0);
+  gtk_widget_show (view->priv->coord_hbox);
+
+  view->priv->selection_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL,
+                                            content_spacing);
+  gtk_box_set_homogeneous (GTK_BOX (view->priv->selection_hbox), TRUE);
+  gtk_box_pack_start (GTK_BOX (view), view->priv->selection_hbox,
+                      FALSE, FALSE, 0);
+  gtk_widget_show (view->priv->selection_hbox);
+
+
+  /* Pixels */
+
+  frame = gimp_frame_new (_("Pixels"));
+  gtk_box_pack_start (GTK_BOX (view->priv->coord_hbox), frame, TRUE, TRUE, 0);
+  gtk_widget_show (frame);
+
+  table = gtk_table_new (2, 2, FALSE);
+  gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+  gtk_table_set_row_spacings (GTK_TABLE (table), 2);
+  gtk_container_add (GTK_CONTAINER (frame), table);
+  gtk_widget_show (table);
+
+  view->priv->pixel_x_label = gtk_label_new (_("n/a"));
+  gtk_label_set_xalign (GTK_LABEL (view->priv->pixel_x_label), 1.0);
+  gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
+                             _("X"), 0.5, 0.5,
+                             view->priv->pixel_x_label, 1, FALSE);
+
+  view->priv->pixel_y_label = gtk_label_new (_("n/a"));
+  gtk_label_set_xalign (GTK_LABEL (view->priv->pixel_y_label), 1.0);
+  gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
+                             _("Y"), 0.5, 0.5,
+                             view->priv->pixel_y_label, 1, FALSE);
+
+
+  /* Units */
+
+  frame = gimp_frame_new (_("Units"));
+  gtk_box_pack_start (GTK_BOX (view->priv->coord_hbox), frame, TRUE, TRUE, 0);
+  gtk_widget_show (frame);
+
+  table = gtk_table_new (2, 2, FALSE);
+  gtk_table_set_col_spacings (GTK_TABLE (table), 4);
+  gtk_table_set_row_spacings (GTK_TABLE (table), 2);
+  gtk_container_add (GTK_CONTAINER (frame), table);
+  gtk_widget_show (table);
+
+  view->priv->unit_x_label = gtk_label_new (_("n/a"));
+  gtk_label_set_xalign (GTK_LABEL (view->priv->unit_x_label), 1.0);
+  gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
+                             _("X"), 0.5, 0.5,
+                             view->priv->unit_x_label, 1, FALSE);
+
+  view->priv->unit_y_label = gtk_label_new (_("n/a"));
+  gtk_label_set_xalign (GTK_LABEL (view->priv->unit_y_label), 1.0);
+  gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
+                             _("Y"), 0.5, 0.5,
+                             view->priv->unit_y_label, 1, FALSE);
+
+
+  /* Selection Bounding Box */
+
+  frame = gimp_frame_new (_("Selection"));
+  gtk_box_pack_start (GTK_BOX (view->priv->selection_hbox), frame, TRUE, TRUE, 0);
+  gtk_widget_show (frame);
+
+  gimp_help_set_help_data (frame, _("The selection's bounding box"), NULL);
+
+  table = gtk_table_new (2, 2, FALSE);
+  gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+  gtk_table_set_row_spacings (GTK_TABLE (table), 2);
+  gtk_container_add (GTK_CONTAINER (frame), table);
+  gtk_widget_show (table);
+
+  view->priv->selection_x_label = gtk_label_new (_("n/a"));
+  gtk_label_set_xalign (GTK_LABEL (view->priv->selection_x_label), 1.0);
+  gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
+                             _("X"), 0.5, 0.5,
+                             view->priv->selection_x_label, 1, FALSE);
+
+  view->priv->selection_y_label = gtk_label_new (_("n/a"));
+  gtk_label_set_xalign (GTK_LABEL (view->priv->selection_y_label), 1.0);
+  gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
+                             _("Y"), 0.5, 0.5,
+                             view->priv->selection_y_label, 1, FALSE);
+
+  frame = gimp_frame_new ("");
+  gtk_box_pack_start (GTK_BOX (view->priv->selection_hbox), frame, TRUE, TRUE, 0);
+  gtk_widget_show (frame);
+
+  table = gtk_table_new (2, 2, FALSE);
+  gtk_table_set_col_spacings (GTK_TABLE (table), 4);
+  gtk_table_set_row_spacings (GTK_TABLE (table), 2);
+  gtk_container_add (GTK_CONTAINER (frame), table);
+  gtk_widget_show (table);
+
+  view->priv->selection_width_label = gtk_label_new (_("n/a"));
+  gtk_label_set_xalign (GTK_LABEL (view->priv->selection_width_label), 1.0);
+  gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
+                             /* Width */
+                             _("W"), 0.5, 0.5,
+                             view->priv->selection_width_label, 1, FALSE);
+
+  view->priv->selection_height_label = gtk_label_new (_("n/a"));
+  gtk_label_set_xalign (GTK_LABEL (view->priv->selection_height_label), 1.0);
+  gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
+                             /* Height */
+                             _("H"), 0.5, 0.5,
+                             view->priv->selection_height_label, 1, FALSE);
+
+
+  /* color information */
+
+  view->priv->color_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL,
+                                        content_spacing);
+  gtk_box_set_homogeneous (GTK_BOX (view->priv->color_hbox), TRUE);
+  gtk_box_pack_start (GTK_BOX (view), view->priv->color_hbox, FALSE, FALSE, 0);
+  gtk_widget_show (view->priv->color_hbox);
+
+  view->priv->color_frame_1 = gimp_color_frame_new ();
+  gimp_color_frame_set_mode (GIMP_COLOR_FRAME (view->priv->color_frame_1),
+                             GIMP_COLOR_PICK_MODE_PIXEL);
+  gimp_color_frame_set_ellipsize (GIMP_COLOR_FRAME (view->priv->color_frame_1),
+                                  PANGO_ELLIPSIZE_END);
+  gtk_box_pack_start (GTK_BOX (view->priv->color_hbox), view->priv->color_frame_1,
+                      TRUE, TRUE, 0);
+  gtk_widget_show (view->priv->color_frame_1);
+
+  view->priv->color_frame_2 = gimp_color_frame_new ();
+  gimp_color_frame_set_mode (GIMP_COLOR_FRAME (view->priv->color_frame_2),
+                             GIMP_COLOR_PICK_MODE_RGB_PERCENT);
+  gtk_box_pack_start (GTK_BOX (view->priv->color_hbox), view->priv->color_frame_2,
+                      TRUE, TRUE, 0);
+  gtk_widget_show (view->priv->color_frame_2);
+
+  /* sample merged toggle */
+
+  toggle = gimp_prop_check_button_new (G_OBJECT (view), "sample-merged",
+                                       _("_Sample Merged"));
+  gtk_box_pack_start (GTK_BOX (view), toggle, FALSE, FALSE, 0);
+  gtk_widget_show (toggle);
+}
+
+static void
+gimp_cursor_view_docked_iface_init (GimpDockedInterface *iface)
+{
+  parent_docked_iface = g_type_interface_peek_parent (iface);
+
+  if (! parent_docked_iface)
+    parent_docked_iface = g_type_default_interface_peek (GIMP_TYPE_DOCKED);
+
+  iface->set_aux_info = gimp_cursor_view_set_aux_info;
+  iface->get_aux_info = gimp_cursor_view_get_aux_info;
+  iface->set_context  = gimp_cursor_view_set_context;
+}
+
+static void
+gimp_cursor_view_dispose (GObject *object)
+{
+  GimpCursorView *view = GIMP_CURSOR_VIEW (object);
+
+  if (view->priv->context)
+    gimp_docked_set_context (GIMP_DOCKED (view), NULL);
+
+  if (view->priv->cursor_idle_id)
+    {
+      g_source_remove (view->priv->cursor_idle_id);
+      view->priv->cursor_idle_id = 0;
+    }
+
+  g_clear_object (&view->priv->cursor_image);
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gimp_cursor_view_set_property (GObject      *object,
+                               guint         property_id,
+                               const GValue *value,
+                               GParamSpec   *pspec)
+{
+  GimpCursorView *view = GIMP_CURSOR_VIEW (object);
+
+  switch (property_id)
+    {
+    case PROP_SAMPLE_MERGED:
+      view->priv->sample_merged = g_value_get_boolean (value);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_cursor_view_get_property (GObject    *object,
+                               guint       property_id,
+                               GValue     *value,
+                               GParamSpec *pspec)
+{
+  GimpCursorView *view = GIMP_CURSOR_VIEW (object);
+
+  switch (property_id)
+    {
+    case PROP_SAMPLE_MERGED:
+      g_value_set_boolean (value, view->priv->sample_merged);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+#define AUX_INFO_FRAME_1_MODE "frame-1-mode"
+#define AUX_INFO_FRAME_2_MODE "frame-2-mode"
+
+static void
+gimp_cursor_view_set_aux_info (GimpDocked *docked,
+                               GList      *aux_info)
+{
+  GimpCursorView *view = GIMP_CURSOR_VIEW (docked);
+  GList          *list;
+
+  parent_docked_iface->set_aux_info (docked, aux_info);
+
+  for (list = aux_info; list; list = g_list_next (list))
+    {
+      GimpSessionInfoAux *aux   = list->data;
+      GtkWidget          *frame = NULL;
+
+      if (! strcmp (aux->name, AUX_INFO_FRAME_1_MODE))
+        frame = view->priv->color_frame_1;
+      else if (! strcmp (aux->name, AUX_INFO_FRAME_2_MODE))
+        frame = view->priv->color_frame_2;
+
+      if (frame)
+        {
+          GEnumClass *enum_class;
+          GEnumValue *enum_value;
+
+          enum_class = g_type_class_peek (GIMP_TYPE_COLOR_PICK_MODE);
+          enum_value = g_enum_get_value_by_nick (enum_class, aux->value);
+
+          if (enum_value)
+            gimp_color_frame_set_mode (GIMP_COLOR_FRAME (frame),
+                                       enum_value->value);
+        }
+    }
+}
+
+static GList *
+gimp_cursor_view_get_aux_info (GimpDocked *docked)
+{
+  GimpCursorView     *view = GIMP_CURSOR_VIEW (docked);
+  GList              *aux_info;
+  const gchar        *nick;
+  GimpSessionInfoAux *aux;
+
+  aux_info = parent_docked_iface->get_aux_info (docked);
+
+  if (gimp_enum_get_value (GIMP_TYPE_COLOR_PICK_MODE,
+                           GIMP_COLOR_FRAME (view->priv->color_frame_1)->pick_mode,
+                           NULL, &nick, NULL, NULL))
+    {
+      aux = gimp_session_info_aux_new (AUX_INFO_FRAME_1_MODE, nick);
+      aux_info = g_list_append (aux_info, aux);
+    }
+
+  if (gimp_enum_get_value (GIMP_TYPE_COLOR_PICK_MODE,
+                           GIMP_COLOR_FRAME (view->priv->color_frame_2)->pick_mode,
+                           NULL, &nick, NULL, NULL))
+    {
+      aux = gimp_session_info_aux_new (AUX_INFO_FRAME_2_MODE, nick);
+      aux_info = g_list_append (aux_info, aux);
+    }
+
+  return aux_info;
+}
+
+static void
+gimp_cursor_view_format_as_unit (GimpUnit  unit,
+                                 gchar    *output_buf,
+                                 gint      output_buf_size,
+                                 gdouble   pixel_value,
+                                 gdouble   image_res)
+{
+  gchar         format_buf[32];
+  gdouble       value;
+  gint          unit_digits = 0;
+  const gchar  *unit_str = "";
+
+  value = gimp_pixels_to_units (pixel_value, unit, image_res);
+
+  if (unit != GIMP_UNIT_PIXEL)
+    {
+      unit_digits = gimp_unit_get_scaled_digits (unit, image_res);
+      unit_str    = gimp_unit_get_abbreviation (unit);
+    }
+
+  g_snprintf (format_buf, sizeof (format_buf),
+              "%%.%df %s", unit_digits, unit_str);
+
+  g_snprintf (output_buf, output_buf_size, format_buf, value);
+}
+
+static void
+gimp_cursor_view_set_label_italic (GtkWidget *label,
+                                   gboolean   italic)
+{
+  PangoStyle attribute = italic ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL;
+
+  gimp_label_set_attributes (GTK_LABEL (label),
+                             PANGO_ATTR_STYLE, attribute,
+                             -1);
+}
+
+static void
+gimp_cursor_view_style_set (GtkWidget *widget,
+                            GtkStyle  *prev_style)
+{
+  GimpCursorView *view = GIMP_CURSOR_VIEW (widget);
+  gint            content_spacing;
+
+  GTK_WIDGET_CLASS (parent_class)->style_set (widget, prev_style);
+
+  gtk_widget_style_get (GTK_WIDGET (view),
+                        "content-spacing", &content_spacing,
+                        NULL);
+
+  gtk_box_set_spacing (GTK_BOX (view->priv->coord_hbox),     content_spacing);
+  gtk_box_set_spacing (GTK_BOX (view->priv->selection_hbox), content_spacing);
+  gtk_box_set_spacing (GTK_BOX (view->priv->color_hbox),     content_spacing);
+}
+
+static void
+gimp_cursor_view_set_context (GimpDocked  *docked,
+                              GimpContext *context)
+{
+  GimpCursorView  *view    = GIMP_CURSOR_VIEW (docked);
+  GimpColorConfig *config  = NULL;
+  GimpDisplay     *display = NULL;
+  GimpImage       *image   = NULL;
+
+  if (context == view->priv->context)
+    return;
+
+  if (view->priv->context)
+    {
+      g_signal_handlers_disconnect_by_func (view->priv->context,
+                                            gimp_cursor_view_diplay_changed,
+                                            view);
+      g_signal_handlers_disconnect_by_func (view->priv->context,
+                                            gimp_cursor_view_image_changed,
+                                            view);
+
+      g_object_unref (view->priv->context);
+    }
+
+  view->priv->context = context;
+
+  if (view->priv->context)
+    {
+      g_object_ref (view->priv->context);
+
+      g_signal_connect_swapped (view->priv->context, "display-changed",
+                                G_CALLBACK (gimp_cursor_view_diplay_changed),
+                                view);
+
+      g_signal_connect_swapped (view->priv->context, "image-changed",
+                                G_CALLBACK (gimp_cursor_view_image_changed),
+                                view);
+
+      config  = context->gimp->config->color_management;
+      display = gimp_context_get_display (context);
+      image   = gimp_context_get_image (context);
+    }
+
+  gimp_color_frame_set_color_config (GIMP_COLOR_FRAME (view->priv->color_frame_1),
+                                     config);
+  gimp_color_frame_set_color_config (GIMP_COLOR_FRAME (view->priv->color_frame_2),
+                                     config);
+
+  gimp_cursor_view_diplay_changed (view, display, view->priv->context);
+  gimp_cursor_view_image_changed (view, image, view->priv->context);
+}
+
+static void
+gimp_cursor_view_image_changed (GimpCursorView *view,
+                                GimpImage      *image,
+                                GimpContext    *context)
+{
+  g_return_if_fail (GIMP_IS_CURSOR_VIEW (view));
+
+  if (image == view->priv->image)
+    return;
+
+  if (view->priv->image)
+    {
+      g_signal_handlers_disconnect_by_func (view->priv->image,
+                                            gimp_cursor_view_mask_changed,
+                                            view);
+    }
+
+  view->priv->image = image;
+
+  if (view->priv->image)
+    {
+      g_signal_connect_swapped (view->priv->image, "mask-changed",
+                                G_CALLBACK (gimp_cursor_view_mask_changed),
+                                view);
+    }
+
+  gimp_cursor_view_mask_changed (view, view->priv->image);
+}
+
+static void
+gimp_cursor_view_mask_changed (GimpCursorView *view,
+                               GimpImage      *image)
+{
+  gimp_cursor_view_update_selection_info (view,
+                                          view->priv->image,
+                                          view->priv->unit);
+}
+
+static void
+gimp_cursor_view_diplay_changed (GimpCursorView *view,
+                                 GimpDisplay    *display,
+                                 GimpContext    *context)
+{
+  GimpDisplayShell *shell = NULL;
+
+  if (display)
+    shell = gimp_display_get_shell (display);
+
+  if (view->priv->shell)
+    {
+      g_signal_handlers_disconnect_by_func (view->priv->shell,
+                                            gimp_cursor_view_shell_unit_changed,
+                                            view);
+    }
+
+  view->priv->shell = shell;
+
+  if (view->priv->shell)
+    {
+      g_signal_connect_swapped (view->priv->shell, "notify::unit",
+                                G_CALLBACK (gimp_cursor_view_shell_unit_changed),
+                                view);
+    }
+
+  gimp_cursor_view_shell_unit_changed (view,
+                                       NULL,
+                                       view->priv->shell);
+}
+
+static void
+gimp_cursor_view_shell_unit_changed (GimpCursorView   *view,
+                                     GParamSpec       *pspec,
+                                     GimpDisplayShell *shell)
+{
+  GimpUnit new_unit = GIMP_UNIT_PIXEL;
+
+  if (shell)
+    {
+      new_unit = gimp_display_shell_get_unit (shell);
+    }
+
+  if (view->priv->unit != new_unit)
+    {
+      gimp_cursor_view_update_selection_info (view, view->priv->image, new_unit);
+      view->priv->unit = new_unit;
+    }
+}
+
+static void
+gimp_cursor_view_update_selection_info (GimpCursorView *view,
+                                        GimpImage      *image,
+                                        GimpUnit        unit)
+{
+  gint x, y, width, height;
+
+  if (image &&
+      gimp_item_bounds (GIMP_ITEM (gimp_image_get_mask (image)),
+                        &x, &y, &width, &height))
+    {
+      gdouble xres, yres;
+      gchar   buf[32];
+
+      gimp_image_get_resolution (image, &xres, &yres);
+
+      gimp_cursor_view_format_as_unit (unit, buf, sizeof (buf), x, xres);
+      gtk_label_set_text (GTK_LABEL (view->priv->selection_x_label), buf);
+
+      gimp_cursor_view_format_as_unit (unit, buf, sizeof (buf), y, yres);
+      gtk_label_set_text (GTK_LABEL (view->priv->selection_y_label), buf);
+
+      gimp_cursor_view_format_as_unit (unit, buf, sizeof (buf), width, xres);
+      gtk_label_set_text (GTK_LABEL (view->priv->selection_width_label), buf);
+
+      gimp_cursor_view_format_as_unit (unit, buf, sizeof (buf), height, yres);
+      gtk_label_set_text (GTK_LABEL (view->priv->selection_height_label), buf);
+    }
+  else
+    {
+      gtk_label_set_text (GTK_LABEL (view->priv->selection_x_label),
+                          _("n/a"));
+      gtk_label_set_text (GTK_LABEL (view->priv->selection_y_label),
+                          _("n/a"));
+      gtk_label_set_text (GTK_LABEL (view->priv->selection_width_label),
+                          _("n/a"));
+      gtk_label_set_text (GTK_LABEL (view->priv->selection_height_label),
+                          _("n/a"));
+    }
+}
+
+static gboolean
+gimp_cursor_view_cursor_idle (GimpCursorView *view)
+{
+
+  if (view->priv->cursor_image)
+    {
+      GimpImage  *image = view->priv->cursor_image;
+      GimpUnit    unit  = view->priv->cursor_unit;
+      gdouble     x     = view->priv->cursor_x;
+      gdouble     y     = view->priv->cursor_y;
+      gboolean    in_image;
+      gchar       buf[32];
+      const Babl *sample_format;
+      gdouble     pixel[4];
+      GimpRGB     color;
+      gdouble     xres;
+      gdouble     yres;
+      gint        int_x;
+      gint        int_y;
+
+      if (unit == GIMP_UNIT_PIXEL)
+        unit = gimp_image_get_unit (image);
+
+      gimp_image_get_resolution (image, &xres, &yres);
+
+      in_image = (x >= 0.0 && x < gimp_image_get_width  (image) &&
+                  y >= 0.0 && y < gimp_image_get_height (image));
+
+      g_snprintf (buf, sizeof (buf), "%d", (gint) floor (x));
+      gtk_label_set_text (GTK_LABEL (view->priv->pixel_x_label), buf);
+      gimp_cursor_view_set_label_italic (view->priv->pixel_x_label, ! in_image);
+
+      g_snprintf (buf, sizeof (buf), "%d", (gint) floor (y));
+      gtk_label_set_text (GTK_LABEL (view->priv->pixel_y_label), buf);
+      gimp_cursor_view_set_label_italic (view->priv->pixel_y_label, ! in_image);
+
+      gimp_cursor_view_format_as_unit (unit, buf, sizeof (buf), x, xres);
+      gtk_label_set_text (GTK_LABEL (view->priv->unit_x_label), buf);
+      gimp_cursor_view_set_label_italic (view->priv->unit_x_label, ! in_image);
+
+      gimp_cursor_view_format_as_unit (unit, buf, sizeof (buf), y, yres);
+      gtk_label_set_text (GTK_LABEL (view->priv->unit_y_label), buf);
+      gimp_cursor_view_set_label_italic (view->priv->unit_y_label, ! in_image);
+
+      int_x = (gint) floor (x);
+      int_y = (gint) floor (y);
+
+      if (gimp_image_pick_color (image, NULL,
+                                 int_x, int_y,
+                                 view->priv->shell->show_all,
+                                 view->priv->sample_merged,
+                                 FALSE, 0.0,
+                                 &sample_format, pixel, &color))
+        {
+          gimp_color_frame_set_color (GIMP_COLOR_FRAME (view->priv->color_frame_1),
+                                      FALSE, sample_format, pixel, &color,
+                                      int_x, int_y);
+          gimp_color_frame_set_color (GIMP_COLOR_FRAME (view->priv->color_frame_2),
+                                      FALSE, sample_format, pixel, &color,
+                                      int_x, int_y);
+        }
+      else
+        {
+          gimp_color_frame_set_invalid (GIMP_COLOR_FRAME (view->priv->color_frame_1));
+          gimp_color_frame_set_invalid (GIMP_COLOR_FRAME (view->priv->color_frame_2));
+        }
+
+      /* Show the selection info from the image under the cursor if any */
+      gimp_cursor_view_update_selection_info (view,
+                                              image,
+                                              view->priv->cursor_unit);
+
+      g_clear_object (&view->priv->cursor_image);
+    }
+  else
+    {
+      gtk_label_set_text (GTK_LABEL (view->priv->pixel_x_label), _("n/a"));
+      gtk_label_set_text (GTK_LABEL (view->priv->pixel_y_label), _("n/a"));
+      gtk_label_set_text (GTK_LABEL (view->priv->unit_x_label),  _("n/a"));
+      gtk_label_set_text (GTK_LABEL (view->priv->unit_y_label),  _("n/a"));
+
+      gimp_color_frame_set_invalid (GIMP_COLOR_FRAME (view->priv->color_frame_1));
+      gimp_color_frame_set_invalid (GIMP_COLOR_FRAME (view->priv->color_frame_2));
+
+      /* Start showing selection info from the active image again */
+      gimp_cursor_view_update_selection_info (view,
+                                              view->priv->image,
+                                              view->priv->unit);
+    }
+
+  view->priv->cursor_idle_id = 0;
+
+  return G_SOURCE_REMOVE;
+}
+
+
+/*  public functions  */
+
+GtkWidget *
+gimp_cursor_view_new (GimpMenuFactory *menu_factory)
+{
+  g_return_val_if_fail (GIMP_IS_MENU_FACTORY (menu_factory), NULL);
+
+  return g_object_new (GIMP_TYPE_CURSOR_VIEW,
+                       "menu-factory",    menu_factory,
+                       "menu-identifier", "<CursorInfo>",
+                       "ui-path",         "/cursor-info-popup",
+                       NULL);
+}
+
+void
+gimp_cursor_view_set_sample_merged (GimpCursorView *view,
+                                    gboolean        sample_merged)
+{
+  g_return_if_fail (GIMP_IS_CURSOR_VIEW (view));
+
+  sample_merged = sample_merged ? TRUE : FALSE;
+
+  if (view->priv->sample_merged != sample_merged)
+    {
+      view->priv->sample_merged = sample_merged;
+
+      g_object_notify (G_OBJECT (view), "sample-merged");
+    }
+}
+
+gboolean
+gimp_cursor_view_get_sample_merged (GimpCursorView *view)
+{
+  g_return_val_if_fail (GIMP_IS_CURSOR_VIEW (view), FALSE);
+
+  return view->priv->sample_merged;
+}
+
+void
+gimp_cursor_view_update_cursor (GimpCursorView   *view,
+                                GimpImage        *image,
+                                GimpUnit          shell_unit,
+                                gdouble           x,
+                                gdouble           y)
+{
+  g_return_if_fail (GIMP_IS_CURSOR_VIEW (view));
+  g_return_if_fail (GIMP_IS_IMAGE (image));
+
+  g_clear_object (&view->priv->cursor_image);
+
+  view->priv->cursor_image = g_object_ref (image);
+  view->priv->cursor_unit  = shell_unit;
+  view->priv->cursor_x     = x;
+  view->priv->cursor_y     = y;
+
+  if (view->priv->cursor_idle_id == 0)
+    {
+      view->priv->cursor_idle_id =
+        g_idle_add ((GSourceFunc) gimp_cursor_view_cursor_idle, view);
+    }
+}
+
+void
+gimp_cursor_view_clear_cursor (GimpCursorView *view)
+{
+  g_return_if_fail (GIMP_IS_CURSOR_VIEW (view));
+
+  g_clear_object (&view->priv->cursor_image);
+
+  if (view->priv->cursor_idle_id == 0)
+    {
+      view->priv->cursor_idle_id =
+        g_idle_add ((GSourceFunc) gimp_cursor_view_cursor_idle, view);
+    }
+}