150 lines
5.1 KiB
C
150 lines
5.1 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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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/pikaimage.h"
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#include "pikadisplay.h"
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#include "pikadisplay-handlers.h"
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/* local function prototypes */
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static void pika_display_update_handler (PikaProjection *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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PikaDisplay *display);
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static void pika_display_bounds_changed_handler (PikaImage *image,
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gint old_x,
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gint old_y,
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PikaDisplay *display);
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static void pika_display_flush_handler (PikaImage *image,
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gboolean invalidate_preview,
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PikaDisplay *display);
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static gboolean
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pika_display_flush_handler_idle (gpointer user_data);
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/* public functions */
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void
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pika_display_connect (PikaDisplay *display)
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{
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PikaImage *image;
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g_return_if_fail (PIKA_IS_DISPLAY (display));
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image = pika_display_get_image (display);
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g_return_if_fail (PIKA_IS_IMAGE (image));
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g_signal_connect (pika_image_get_projection (image), "update",
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G_CALLBACK (pika_display_update_handler),
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display);
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g_signal_connect (image, "bounds-changed",
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G_CALLBACK (pika_display_bounds_changed_handler),
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display);
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g_signal_connect_swapped (image, "flush",
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G_CALLBACK (pika_display_flush),
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display);
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g_signal_connect_swapped (image, "selected-layers-changed",
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G_CALLBACK (pika_display_flush),
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display);
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}
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void
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pika_display_disconnect (PikaDisplay *display)
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{
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PikaImage *image;
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g_return_if_fail (PIKA_IS_DISPLAY (display));
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image = pika_display_get_image (display);
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g_return_if_fail (PIKA_IS_IMAGE (image));
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g_signal_handlers_disconnect_by_func (image,
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pika_display_flush,
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display);
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g_signal_handlers_disconnect_by_func (image,
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pika_display_bounds_changed_handler,
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display);
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g_signal_handlers_disconnect_by_func (pika_image_get_projection (image),
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pika_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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pika_display_update_handler (PikaProjection *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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PikaDisplay *display)
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{
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pika_display_update_area (display, now, x, y, w, h);
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}
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static void
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pika_display_bounds_changed_handler (PikaImage *image,
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gint old_x,
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gint old_y,
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PikaDisplay *display)
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{
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pika_display_update_bounding_box (display);
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}
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static void
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pika_display_flush_handler (PikaImage *image,
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gboolean invalidate_preview,
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PikaDisplay *display)
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{
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g_idle_add_full (G_PRIORITY_LOW,
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(GSourceFunc) pika_display_flush_handler_idle,
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g_object_ref (display), g_object_unref);
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}
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static gboolean
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pika_display_flush_handler_idle (gpointer user_data)
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{
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PikaDisplay *display = user_data;
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pika_display_flush (display);
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return G_SOURCE_REMOVE;
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}
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