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-rw-r--r--app/widgets/gimppixbuf.c150
1 files changed, 150 insertions, 0 deletions
diff --git a/app/widgets/gimppixbuf.c b/app/widgets/gimppixbuf.c
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+++ b/app/widgets/gimppixbuf.c
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+/* 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;
+}