Adding upstream version 2.10.22.upstream/2.10.22upstream

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

1 files changed, 238 insertions, 0 deletions

diff --git a/app/core/gimptreehandler.c b/app/core/gimptreehandler.c
new file mode 100644
index 0000000..b26768e
--- /dev/null
+++ b/app/core/gimptreehandler.c
@@ -0,0 +1,238 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * GimpTreeHandler
+ * Copyright (C) 2009  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 <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "core-types.h"
+
+#include "gimpcontainer.h"
+#include "gimptreehandler.h"
+#include "gimpviewable.h"
+
+
+static void   gimp_tree_handler_dispose          (GObject         *object);
+
+static void   gimp_tree_handler_freeze           (GimpTreeHandler *handler,
+                                                  GimpContainer   *container);
+static void   gimp_tree_handler_thaw             (GimpTreeHandler *handler,
+                                                  GimpContainer   *container);
+
+static void   gimp_tree_handler_add_container    (GimpTreeHandler *handler,
+                                                  GimpContainer   *container);
+static void   gimp_tree_handler_add_foreach      (GimpViewable    *viewable,
+                                                  GimpTreeHandler *handler);
+static void   gimp_tree_handler_add              (GimpTreeHandler *handler,
+                                                  GimpViewable    *viewable,
+                                                  GimpContainer   *container);
+
+static void   gimp_tree_handler_remove_container (GimpTreeHandler *handler,
+                                                  GimpContainer   *container);
+static void   gimp_tree_handler_remove_foreach   (GimpViewable    *viewable,
+                                                  GimpTreeHandler *handler);
+static void   gimp_tree_handler_remove           (GimpTreeHandler *handler,
+                                                  GimpViewable    *viewable,
+                                                  GimpContainer   *container);
+
+
+G_DEFINE_TYPE (GimpTreeHandler, gimp_tree_handler, GIMP_TYPE_OBJECT)
+
+#define parent_class gimp_tree_handler_parent_class
+
+
+static void
+gimp_tree_handler_class_init (GimpTreeHandlerClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->dispose = gimp_tree_handler_dispose;
+}
+
+static void
+gimp_tree_handler_init (GimpTreeHandler *handler)
+{
+}
+
+static void
+gimp_tree_handler_dispose (GObject *object)
+{
+  GimpTreeHandler *handler = GIMP_TREE_HANDLER (object);
+
+  if (handler->container)
+    {
+      g_signal_handlers_disconnect_by_func (handler->container,
+                                            gimp_tree_handler_freeze,
+                                            handler);
+      g_signal_handlers_disconnect_by_func (handler->container,
+                                            gimp_tree_handler_thaw,
+                                            handler);
+
+      if (! gimp_container_frozen (handler->container))
+        gimp_tree_handler_remove_container (handler, handler->container);
+
+      g_clear_object (&handler->container);
+      g_clear_pointer (&handler->signal_name, g_free);
+    }
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+
+/*  public functions  */
+
+GimpTreeHandler *
+gimp_tree_handler_connect (GimpContainer *container,
+                           const gchar   *signal_name,
+                           GCallback      callback,
+                           gpointer       user_data)
+{
+  GimpTreeHandler *handler;
+
+  g_return_val_if_fail (GIMP_IS_CONTAINER (container), NULL);
+  g_return_val_if_fail (signal_name != NULL, NULL);
+
+  handler = g_object_new (GIMP_TYPE_TREE_HANDLER, NULL);
+
+  handler->container   = g_object_ref (container);
+  handler->signal_name = g_strdup (signal_name);
+  handler->callback    = callback;
+  handler->user_data   = user_data;
+
+  if (! gimp_container_frozen (container))
+    gimp_tree_handler_add_container (handler, container);
+
+  g_signal_connect_object (container, "freeze",
+                           G_CALLBACK (gimp_tree_handler_freeze),
+                           handler,
+                           G_CONNECT_SWAPPED);
+  g_signal_connect_object (container, "thaw",
+                           G_CALLBACK (gimp_tree_handler_thaw),
+                           handler,
+                           G_CONNECT_SWAPPED);
+
+  return handler;
+}
+
+void
+gimp_tree_handler_disconnect (GimpTreeHandler *handler)
+{
+  g_return_if_fail (GIMP_IS_TREE_HANDLER (handler));
+
+  g_object_run_dispose (G_OBJECT (handler));
+  g_object_unref (handler);
+}
+
+
+/*  private functions  */
+
+static void
+gimp_tree_handler_freeze (GimpTreeHandler *handler,
+                          GimpContainer   *container)
+{
+  gimp_tree_handler_remove_container (handler, container);
+}
+
+static void
+gimp_tree_handler_thaw (GimpTreeHandler *handler,
+                        GimpContainer   *container)
+{
+  gimp_tree_handler_add_container (handler, container);
+}
+
+static void
+gimp_tree_handler_add_container (GimpTreeHandler *handler,
+                                 GimpContainer   *container)
+{
+  gimp_container_foreach (container,
+                          (GFunc) gimp_tree_handler_add_foreach,
+                          handler);
+
+  g_signal_connect_object (container, "add",
+                           G_CALLBACK (gimp_tree_handler_add),
+                           handler,
+                           G_CONNECT_SWAPPED);
+  g_signal_connect_object (container, "remove",
+                           G_CALLBACK (gimp_tree_handler_remove),
+                           handler,
+                           G_CONNECT_SWAPPED);
+}
+
+static void
+gimp_tree_handler_add_foreach (GimpViewable    *viewable,
+                               GimpTreeHandler *handler)
+{
+  gimp_tree_handler_add (handler, viewable, NULL);
+}
+
+static void
+gimp_tree_handler_add (GimpTreeHandler *handler,
+                       GimpViewable    *viewable,
+                       GimpContainer   *unused)
+{
+  GimpContainer *children = gimp_viewable_get_children (viewable);
+
+  g_signal_connect (viewable,
+                    handler->signal_name,
+                    handler->callback,
+                    handler->user_data);
+
+  if (children)
+    gimp_tree_handler_add_container (handler, children);
+}
+
+static void
+gimp_tree_handler_remove_container (GimpTreeHandler *handler,
+                                    GimpContainer   *container)
+{
+  g_signal_handlers_disconnect_by_func (container,
+                                        gimp_tree_handler_add,
+                                        handler);
+  g_signal_handlers_disconnect_by_func (container,
+                                        gimp_tree_handler_remove,
+                                        handler);
+
+  gimp_container_foreach (container,
+                          (GFunc) gimp_tree_handler_remove_foreach,
+                          handler);
+}
+
+static void
+gimp_tree_handler_remove_foreach (GimpViewable    *viewable,
+                                  GimpTreeHandler *handler)
+{
+  gimp_tree_handler_remove (handler, viewable, NULL);
+}
+
+static void
+gimp_tree_handler_remove (GimpTreeHandler *handler,
+                          GimpViewable    *viewable,
+                          GimpContainer   *unused)
+{
+  GimpContainer *children = gimp_viewable_get_children (viewable);
+
+  if (children)
+    gimp_tree_handler_remove_container (handler, children);
+
+  g_signal_handlers_disconnect_by_func (viewable,
+                                        handler->callback,
+                                        handler->user_data);
+}