mirror of https://github.com/GNOME/gimp.git
129 lines
4.3 KiB
C
129 lines
4.3 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "display-types.h"
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#include "core/gimpimage.h"
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#include "gimpdisplay.h"
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#include "gimpdisplay-handlers.h"
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/* local function prototypes */
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static void gimp_display_update_handler (GimpProjection *projection,
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gboolean now,
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gint x,
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gint y,
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gint w,
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gint h,
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GimpDisplay *display);
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static void gimp_display_bounds_changed_handler (GimpImage *image,
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gint old_x,
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gint old_y,
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GimpDisplay *display);
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static void gimp_display_flush_handler (GimpImage *image,
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gboolean invalidate_preview,
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GimpDisplay *display);
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/* public functions */
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void
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gimp_display_connect (GimpDisplay *display)
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{
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GimpImage *image;
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g_return_if_fail (GIMP_IS_DISPLAY (display));
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image = gimp_display_get_image (display);
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g_return_if_fail (GIMP_IS_IMAGE (image));
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g_signal_connect (gimp_image_get_projection (image), "update",
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G_CALLBACK (gimp_display_update_handler),
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display);
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g_signal_connect (image, "bounds-changed",
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G_CALLBACK (gimp_display_bounds_changed_handler),
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display);
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g_signal_connect (image, "flush",
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G_CALLBACK (gimp_display_flush_handler),
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display);
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}
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void
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gimp_display_disconnect (GimpDisplay *display)
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{
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GimpImage *image;
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g_return_if_fail (GIMP_IS_DISPLAY (display));
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image = gimp_display_get_image (display);
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g_return_if_fail (GIMP_IS_IMAGE (image));
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g_signal_handlers_disconnect_by_func (image,
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gimp_display_flush_handler,
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display);
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g_signal_handlers_disconnect_by_func (image,
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gimp_display_bounds_changed_handler,
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display);
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g_signal_handlers_disconnect_by_func (gimp_image_get_projection (image),
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gimp_display_update_handler,
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display);
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}
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/* private functions */
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static void
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gimp_display_update_handler (GimpProjection *projection,
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gboolean now,
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gint x,
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gint y,
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gint w,
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gint h,
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GimpDisplay *display)
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{
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gimp_display_update_area (display, now, x, y, w, h);
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}
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static void
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gimp_display_bounds_changed_handler (GimpImage *image,
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gint old_x,
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gint old_y,
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GimpDisplay *display)
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{
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gimp_display_update_bounding_box (display);
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}
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static void
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gimp_display_flush_handler (GimpImage *image,
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gboolean invalidate_preview,
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GimpDisplay *display)
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{
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gimp_display_flush (display);
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}
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