1 files changed, 150 insertions, 0 deletions
diff --git a/app/widgets/gimppixbuf.c b/app/widgets/gimppixbuf.c
new file mode 100644
index 0000000..0c3f88e
--- /dev/null
+++ b/app/widgets/gimppixbuf.c
@@ -0,0 +1,150 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimppixbuf.c
+ * Copyright (C) 2005 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 "widgets-types.h"
+
+#include "gimppixbuf.h"
+
+
+/*  local function prototypes  */
+
+static gint   gimp_pixbuf_format_compare (GdkPixbufFormat *a,
+                                          GdkPixbufFormat *b);
+
+
+/*  public functions  */
+
+GSList *
+gimp_pixbuf_get_formats (void)
+{
+  return g_slist_sort (gdk_pixbuf_get_formats (),
+                       (GCompareFunc) gimp_pixbuf_format_compare);
+}
+
+void
+gimp_pixbuf_targets_add (GtkTargetList *target_list,
+                         guint          info,
+                         gboolean       writable)
+{
+  GSList *formats;
+  GSList *list;
+
+  g_return_if_fail (target_list != NULL);
+
+  formats = gimp_pixbuf_get_formats ();
+
+  for (list = formats; list; list = g_slist_next (list))
+    {
+      GdkPixbufFormat  *format = list->data;
+      gchar           **mime_types;
+      gchar           **type;
+
+      if (writable && ! gdk_pixbuf_format_is_writable (format))
+        continue;
+
+      mime_types = gdk_pixbuf_format_get_mime_types (format);
+
+      for (type = mime_types; *type; type++)
+        {
+          /*  skip Windows ICO as writable format  */
+          if (writable && strcmp (*type, "image/x-icon") == 0)
+            continue;
+
+          gtk_target_list_add (target_list,
+                               gdk_atom_intern (*type, FALSE), 0, info);
+
+        }
+
+      g_strfreev (mime_types);
+    }
+
+  g_slist_free (formats);
+}
+
+void
+gimp_pixbuf_targets_remove (GtkTargetList *target_list)
+{
+  GSList *formats;
+  GSList *list;
+
+  g_return_if_fail (target_list != NULL);
+
+  formats = gimp_pixbuf_get_formats ();
+
+  for (list = formats; list; list = g_slist_next (list))
+    {
+      GdkPixbufFormat  *format = list->data;
+      gchar           **mime_types;
+      gchar           **type;
+
+      mime_types = gdk_pixbuf_format_get_mime_types (format);
+
+      for (type = mime_types; *type; type++)
+        {
+          gtk_target_list_remove (target_list,
+                                  gdk_atom_intern (*type, FALSE));
+        }
+
+      g_strfreev (mime_types);
+    }
+
+  g_slist_free (formats);
+}
+
+
+/*  private functions  */
+
+static gint
+gimp_pixbuf_format_compare (GdkPixbufFormat *a,
+                            GdkPixbufFormat *b)
+{
+  gchar *a_name = gdk_pixbuf_format_get_name (a);
+  gchar *b_name = gdk_pixbuf_format_get_name (b);
+  gint   retval = 0;
+
+  /*  move PNG to the front of the list  */
+  if (strcmp (a_name, "png") == 0)
+    retval = -1;
+  else if (strcmp (b_name, "png") == 0)
+    retval = 1;
+
+  /*  move JPEG to the end of the list  */
+  else if (strcmp (a_name, "jpeg") == 0)
+    retval = 1;
+  else if (strcmp (b_name, "jpeg") == 0)
+    retval = -1;
+
+  /*  move GIF to the end of the list  */
+  else if (strcmp (a_name, "gif") == 0)
+    retval = 1;
+  else if (strcmp (b_name, "gif") == 0)
+    retval = -1;
+
+  g_free (a_name);
+  g_free (b_name);
+
+  return retval;
+}