Adding upstream version 2.10.34.upstream/2.10.34upstream

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

1 files changed, 387 insertions, 0 deletions

diff --git a/app/display/gimpcanvasgroup.c b/app/display/gimpcanvasgroup.c
new file mode 100644
index 0000000..13d00ff
--- /dev/null
+++ b/app/display/gimpcanvasgroup.c
@@ -0,0 +1,387 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpcanvasgroup.c
+ * Copyright (C) 2010 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 <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+
+#include "display-types.h"
+
+#include "gimpcanvasgroup.h"
+#include "gimpdisplayshell.h"
+
+
+enum
+{
+  PROP_0,
+  PROP_GROUP_STROKING,
+  PROP_GROUP_FILLING
+};
+
+
+struct _GimpCanvasGroupPrivate
+{
+  GQueue   *items;
+  gboolean  group_stroking;
+  gboolean  group_filling;
+};
+
+
+/*  local function prototypes  */
+
+static void             gimp_canvas_group_finalize     (GObject         *object);
+static void             gimp_canvas_group_set_property (GObject         *object,
+                                                        guint            property_id,
+                                                        const GValue    *value,
+                                                        GParamSpec      *pspec);
+static void             gimp_canvas_group_get_property (GObject         *object,
+                                                        guint            property_id,
+                                                        GValue          *value,
+                                                        GParamSpec      *pspec);
+static void             gimp_canvas_group_draw         (GimpCanvasItem  *item,
+                                                        cairo_t         *cr);
+static cairo_region_t * gimp_canvas_group_get_extents  (GimpCanvasItem  *item);
+static gboolean         gimp_canvas_group_hit          (GimpCanvasItem  *item,
+                                                        gdouble          x,
+                                                        gdouble          y);
+
+static void             gimp_canvas_group_child_update (GimpCanvasItem  *item,
+                                                        cairo_region_t  *region,
+                                                        GimpCanvasGroup *group);
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpCanvasGroup, gimp_canvas_group,
+                            GIMP_TYPE_CANVAS_ITEM)
+
+#define parent_class gimp_canvas_group_parent_class
+
+
+static void
+gimp_canvas_group_class_init (GimpCanvasGroupClass *klass)
+{
+  GObjectClass        *object_class = G_OBJECT_CLASS (klass);
+  GimpCanvasItemClass *item_class   = GIMP_CANVAS_ITEM_CLASS (klass);
+
+  object_class->finalize     = gimp_canvas_group_finalize;
+  object_class->set_property = gimp_canvas_group_set_property;
+  object_class->get_property = gimp_canvas_group_get_property;
+
+  item_class->draw           = gimp_canvas_group_draw;
+  item_class->get_extents    = gimp_canvas_group_get_extents;
+  item_class->hit            = gimp_canvas_group_hit;
+
+  g_object_class_install_property (object_class, PROP_GROUP_STROKING,
+                                   g_param_spec_boolean ("group-stroking",
+                                                         NULL, NULL,
+                                                         FALSE,
+                                                         GIMP_PARAM_READWRITE));
+
+  g_object_class_install_property (object_class, PROP_GROUP_FILLING,
+                                   g_param_spec_boolean ("group-filling",
+                                                         NULL, NULL,
+                                                         FALSE,
+                                                         GIMP_PARAM_READWRITE));
+}
+
+static void
+gimp_canvas_group_init (GimpCanvasGroup *group)
+{
+  group->priv = gimp_canvas_group_get_instance_private (group);
+
+  group->priv->items = g_queue_new ();
+}
+
+static void
+gimp_canvas_group_finalize (GObject *object)
+{
+  GimpCanvasGroup *group = GIMP_CANVAS_GROUP (object);
+  GimpCanvasItem  *item;
+
+  while ((item = g_queue_peek_head (group->priv->items)))
+    gimp_canvas_group_remove_item (group, item);
+
+  g_queue_free (group->priv->items);
+  group->priv->items = NULL;
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_canvas_group_set_property (GObject      *object,
+                                guint         property_id,
+                                const GValue *value,
+                                GParamSpec   *pspec)
+{
+  GimpCanvasGroup *group = GIMP_CANVAS_GROUP (object);
+
+  switch (property_id)
+    {
+    case PROP_GROUP_STROKING:
+      group->priv->group_stroking = g_value_get_boolean (value);
+      break;
+    case PROP_GROUP_FILLING:
+      group->priv->group_filling = g_value_get_boolean (value);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_canvas_group_get_property (GObject    *object,
+                                guint       property_id,
+                                GValue     *value,
+                                GParamSpec *pspec)
+{
+  GimpCanvasGroup *group = GIMP_CANVAS_GROUP (object);
+
+  switch (property_id)
+    {
+    case PROP_GROUP_STROKING:
+      g_value_set_boolean (value, group->priv->group_stroking);
+      break;
+    case PROP_GROUP_FILLING:
+      g_value_set_boolean (value, group->priv->group_filling);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_canvas_group_draw (GimpCanvasItem *item,
+                        cairo_t        *cr)
+{
+  GimpCanvasGroup *group = GIMP_CANVAS_GROUP (item);
+  GList           *list;
+
+  for (list = group->priv->items->head; list; list = g_list_next (list))
+    {
+      GimpCanvasItem *sub_item = list->data;
+
+      gimp_canvas_item_draw (sub_item, cr);
+    }
+
+  if (group->priv->group_stroking)
+    _gimp_canvas_item_stroke (item, cr);
+
+  if (group->priv->group_filling)
+    _gimp_canvas_item_fill (item, cr);
+}
+
+static cairo_region_t *
+gimp_canvas_group_get_extents (GimpCanvasItem *item)
+{
+  GimpCanvasGroup *group  = GIMP_CANVAS_GROUP (item);
+  cairo_region_t  *region = NULL;
+  GList           *list;
+
+  for (list = group->priv->items->head; list; list = g_list_next (list))
+    {
+      GimpCanvasItem *sub_item   = list->data;
+      cairo_region_t *sub_region = gimp_canvas_item_get_extents (sub_item);
+
+      if (! region)
+        {
+          region = sub_region;
+        }
+      else if (sub_region)
+        {
+          cairo_region_union (region, sub_region);
+          cairo_region_destroy (sub_region);
+        }
+    }
+
+  return region;
+}
+
+static gboolean
+gimp_canvas_group_hit (GimpCanvasItem *item,
+                       gdouble         x,
+                       gdouble         y)
+{
+  GimpCanvasGroup *group = GIMP_CANVAS_GROUP (item);
+  GList           *list;
+
+  for (list = group->priv->items->head; list; list = g_list_next (list))
+    {
+      if (gimp_canvas_item_hit (list->data, x, y))
+        return TRUE;
+    }
+
+  return FALSE;
+}
+
+static void
+gimp_canvas_group_child_update (GimpCanvasItem  *item,
+                                cairo_region_t  *region,
+                                GimpCanvasGroup *group)
+{
+  if (_gimp_canvas_item_needs_update (GIMP_CANVAS_ITEM (group)))
+    _gimp_canvas_item_update (GIMP_CANVAS_ITEM (group), region);
+}
+
+
+/*  public functions  */
+
+GimpCanvasItem *
+gimp_canvas_group_new (GimpDisplayShell *shell)
+{
+  g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
+
+  return g_object_new (GIMP_TYPE_CANVAS_GROUP,
+                       "shell", shell,
+                       NULL);
+}
+
+void
+gimp_canvas_group_add_item (GimpCanvasGroup *group,
+                            GimpCanvasItem  *item)
+{
+  g_return_if_fail (GIMP_IS_CANVAS_GROUP (group));
+  g_return_if_fail (GIMP_IS_CANVAS_ITEM (item));
+  g_return_if_fail (GIMP_CANVAS_ITEM (group) != item);
+
+  if (group->priv->group_stroking)
+    gimp_canvas_item_suspend_stroking (item);
+
+  if (group->priv->group_filling)
+    gimp_canvas_item_suspend_filling (item);
+
+  g_queue_push_tail (group->priv->items, g_object_ref (item));
+
+  if (_gimp_canvas_item_needs_update (GIMP_CANVAS_ITEM (group)))
+    {
+      cairo_region_t *region = gimp_canvas_item_get_extents (item);
+
+      if (region)
+        {
+          _gimp_canvas_item_update (GIMP_CANVAS_ITEM (group), region);
+          cairo_region_destroy (region);
+        }
+    }
+
+  g_signal_connect (item, "update",
+                    G_CALLBACK (gimp_canvas_group_child_update),
+                    group);
+}
+
+void
+gimp_canvas_group_remove_item (GimpCanvasGroup *group,
+                               GimpCanvasItem  *item)
+{
+  GList *list;
+
+  g_return_if_fail (GIMP_IS_CANVAS_GROUP (group));
+  g_return_if_fail (GIMP_IS_CANVAS_ITEM (item));
+
+  list = g_queue_find (group->priv->items, item);
+
+  g_return_if_fail (list != NULL);
+
+  g_queue_delete_link (group->priv->items, list);
+
+  if (group->priv->group_stroking)
+    gimp_canvas_item_resume_stroking (item);
+
+  if (group->priv->group_filling)
+    gimp_canvas_item_resume_filling (item);
+
+  if (_gimp_canvas_item_needs_update (GIMP_CANVAS_ITEM (group)))
+    {
+      cairo_region_t *region = gimp_canvas_item_get_extents (item);
+
+      if (region)
+        {
+          _gimp_canvas_item_update (GIMP_CANVAS_ITEM (group), region);
+          cairo_region_destroy (region);
+        }
+    }
+
+  g_signal_handlers_disconnect_by_func (item,
+                                        gimp_canvas_group_child_update,
+                                        group);
+
+  g_object_unref (item);
+}
+
+void
+gimp_canvas_group_set_group_stroking (GimpCanvasGroup *group,
+                                      gboolean         group_stroking)
+{
+  g_return_if_fail (GIMP_IS_CANVAS_GROUP (group));
+
+  if (group->priv->group_stroking != group_stroking)
+    {
+      GList *list;
+
+      gimp_canvas_item_begin_change (GIMP_CANVAS_ITEM (group));
+
+      g_object_set (group,
+                    "group-stroking", group_stroking ? TRUE : FALSE,
+                    NULL);
+
+      for (list = group->priv->items->head; list; list = g_list_next (list))
+        {
+          if (group->priv->group_stroking)
+            gimp_canvas_item_suspend_stroking (list->data);
+          else
+            gimp_canvas_item_resume_stroking (list->data);
+        }
+
+      gimp_canvas_item_end_change (GIMP_CANVAS_ITEM (group));
+    }
+}
+
+void
+gimp_canvas_group_set_group_filling (GimpCanvasGroup *group,
+                                     gboolean         group_filling)
+{
+  g_return_if_fail (GIMP_IS_CANVAS_GROUP (group));
+
+  if (group->priv->group_filling != group_filling)
+    {
+      GList *list;
+
+      gimp_canvas_item_begin_change (GIMP_CANVAS_ITEM (group));
+
+      g_object_set (group,
+                    "group-filling", group_filling ? TRUE : FALSE,
+                    NULL);
+
+      for (list = group->priv->items->head; list; list = g_list_next (list))
+        {
+          if (group->priv->group_filling)
+            gimp_canvas_item_suspend_filling (list->data);
+          else
+            gimp_canvas_item_resume_filling (list->data);
+        }
+
+      gimp_canvas_item_end_change (GIMP_CANVAS_ITEM (group));
+    }
+}