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-rw-r--r--app/display/gimpdisplay-handlers.c128
1 files changed, 128 insertions, 0 deletions
diff --git a/app/display/gimpdisplay-handlers.c b/app/display/gimpdisplay-handlers.c
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+++ b/app/display/gimpdisplay-handlers.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * 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 "display-types.h"
+
+#include "core/gimpimage.h"
+
+#include "gimpdisplay.h"
+#include "gimpdisplay-handlers.h"
+
+
+/* local function prototypes */
+
+static void gimp_display_update_handler (GimpProjection *projection,
+ gboolean now,
+ gint x,
+ gint y,
+ gint w,
+ gint h,
+ GimpDisplay *display);
+
+static void gimp_display_bounds_changed_handler (GimpImage *image,
+ gint old_x,
+ gint old_y,
+ GimpDisplay *display);
+static void gimp_display_flush_handler (GimpImage *image,
+ gboolean invalidate_preview,
+ GimpDisplay *display);
+
+
+/* public functions */
+
+void
+gimp_display_connect (GimpDisplay *display)
+{
+ GimpImage *image;
+
+ g_return_if_fail (GIMP_IS_DISPLAY (display));
+
+ image = gimp_display_get_image (display);
+
+ g_return_if_fail (GIMP_IS_IMAGE (image));
+
+ g_signal_connect (gimp_image_get_projection (image), "update",
+ G_CALLBACK (gimp_display_update_handler),
+ display);
+
+ g_signal_connect (image, "bounds-changed",
+ G_CALLBACK (gimp_display_bounds_changed_handler),
+ display);
+ g_signal_connect (image, "flush",
+ G_CALLBACK (gimp_display_flush_handler),
+ display);
+}
+
+void
+gimp_display_disconnect (GimpDisplay *display)
+{
+ GimpImage *image;
+
+ g_return_if_fail (GIMP_IS_DISPLAY (display));
+
+ image = gimp_display_get_image (display);
+
+ g_return_if_fail (GIMP_IS_IMAGE (image));
+
+ g_signal_handlers_disconnect_by_func (image,
+ gimp_display_flush_handler,
+ display);
+ g_signal_handlers_disconnect_by_func (image,
+ gimp_display_bounds_changed_handler,
+ display);
+
+ g_signal_handlers_disconnect_by_func (gimp_image_get_projection (image),
+ gimp_display_update_handler,
+ display);
+}
+
+
+/* private functions */
+
+static void
+gimp_display_update_handler (GimpProjection *projection,
+ gboolean now,
+ gint x,
+ gint y,
+ gint w,
+ gint h,
+ GimpDisplay *display)
+{
+ gimp_display_update_area (display, now, x, y, w, h);
+}
+
+static void
+gimp_display_bounds_changed_handler (GimpImage *image,
+ gint old_x,
+ gint old_y,
+ GimpDisplay *display)
+{
+ gimp_display_update_bounding_box (display);
+}
+
+static void
+gimp_display_flush_handler (GimpImage *image,
+ gboolean invalidate_preview,
+ GimpDisplay *display)
+{
+ gimp_display_flush (display);
+}