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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:30:19 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:30:19 +0000
commit5c1676dfe6d2f3c837a5e074117b45613fd29a72 (patch)
treecbffb45144febf451e54061db2b21395faf94bfe /app/core/gimpdrawable-shadow.c
parentInitial commit. (diff)
downloadgimp-upstream.tar.xz
gimp-upstream.zip
Adding upstream version 2.10.34.upstream/2.10.34upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'app/core/gimpdrawable-shadow.c')
-rw-r--r--app/core/gimpdrawable-shadow.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/app/core/gimpdrawable-shadow.c b/app/core/gimpdrawable-shadow.c
new file mode 100644
index 0000000..4c42655
--- /dev/null
+++ b/app/core/gimpdrawable-shadow.c
@@ -0,0 +1,110 @@
+/* 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 <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+#include <cairo.h>
+
+#include "core-types.h"
+
+#include "gegl/gimp-gegl-utils.h"
+
+#include "gimpdrawable.h"
+#include "gimpdrawable-private.h"
+#include "gimpdrawable-shadow.h"
+
+
+GeglBuffer *
+gimp_drawable_get_shadow_buffer (GimpDrawable *drawable)
+{
+ GimpItem *item;
+ gint width;
+ gint height;
+ const Babl *format;
+
+ g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
+
+ item = GIMP_ITEM (drawable);
+
+ width = gimp_item_get_width (item);
+ height = gimp_item_get_height (item);
+ format = gimp_drawable_get_format (drawable);
+
+ if (drawable->private->shadow)
+ {
+ if ((width != gegl_buffer_get_width (drawable->private->shadow)) ||
+ (height != gegl_buffer_get_height (drawable->private->shadow)) ||
+ (format != gegl_buffer_get_format (drawable->private->shadow)))
+ {
+ gimp_drawable_free_shadow_buffer (drawable);
+ }
+ else
+ {
+ return drawable->private->shadow;
+ }
+ }
+
+ drawable->private->shadow = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
+ width, height),
+ format);
+
+ return drawable->private->shadow;
+}
+
+void
+gimp_drawable_free_shadow_buffer (GimpDrawable *drawable)
+{
+ g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
+
+ g_clear_object (&drawable->private->shadow);
+}
+
+void
+gimp_drawable_merge_shadow_buffer (GimpDrawable *drawable,
+ gboolean push_undo,
+ const gchar *undo_desc)
+{
+ gint x, y;
+ gint width, height;
+
+ g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
+ g_return_if_fail (GEGL_IS_BUFFER (drawable->private->shadow));
+
+ /* A useful optimization here is to limit the update to the
+ * extents of the selection mask, as it cannot extend beyond
+ * them.
+ */
+ if (gimp_item_mask_intersect (GIMP_ITEM (drawable), &x, &y, &width, &height))
+ {
+ GeglBuffer *buffer = g_object_ref (drawable->private->shadow);
+
+ gimp_drawable_apply_buffer (drawable, buffer,
+ GEGL_RECTANGLE (x, y, width, height),
+ push_undo, undo_desc,
+ GIMP_OPACITY_OPAQUE,
+ GIMP_LAYER_MODE_REPLACE,
+ GIMP_LAYER_COLOR_SPACE_AUTO,
+ GIMP_LAYER_COLOR_SPACE_AUTO,
+ GIMP_LAYER_COMPOSITE_AUTO,
+ NULL, x, y);
+
+ g_object_unref (buffer);
+ }
+}