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-rw-r--r--app/core/gimpdrawable-floating-selection.c512
1 files changed, 512 insertions, 0 deletions
diff --git a/app/core/gimpdrawable-floating-selection.c b/app/core/gimpdrawable-floating-selection.c
new file mode 100644
index 0000000..71866b1
--- /dev/null
+++ b/app/core/gimpdrawable-floating-selection.c
@@ -0,0 +1,512 @@
+/* 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 <cairo.h>
+#include <gegl.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+#include "libgimpbase/gimpbase.h"
+
+#include "core-types.h"
+
+#include "gegl/gimpapplicator.h"
+
+#include "gimpchannel.h"
+#include "gimpdrawable-floating-selection.h"
+#include "gimpdrawable-filters.h"
+#include "gimpdrawable-private.h"
+#include "gimpimage.h"
+#include "gimplayer.h"
+
+#include "gimp-log.h"
+
+#include "gimp-intl.h"
+
+
+/* local function prototypes */
+
+static void gimp_drawable_remove_fs_filter (GimpDrawable *drawable);
+static void gimp_drawable_sync_fs_filter (GimpDrawable *drawable);
+
+static void gimp_drawable_fs_notify (GObject *object,
+ const GParamSpec *pspec,
+ GimpDrawable *drawable);
+static void gimp_drawable_fs_lock_position_changed (GimpDrawable *signal_drawable,
+ GimpDrawable *drawable);
+static void gimp_drawable_fs_format_changed (GimpDrawable *signal_drawable,
+ GimpDrawable *drawable);
+static void gimp_drawable_fs_affect_changed (GimpImage *image,
+ GimpChannelType channel,
+ GimpDrawable *drawable);
+static void gimp_drawable_fs_mask_changed (GimpImage *image,
+ GimpDrawable *drawable);
+static void gimp_drawable_fs_visibility_changed (GimpLayer *fs,
+ GimpDrawable *drawable);
+static void gimp_drawable_fs_excludes_backdrop_changed (GimpLayer *fs,
+ GimpDrawable *drawable);
+static void gimp_drawable_fs_bounding_box_changed (GimpLayer *fs,
+ GimpDrawable *drawable);
+static void gimp_drawable_fs_update (GimpLayer *fs,
+ gint x,
+ gint y,
+ gint width,
+ gint height,
+ GimpDrawable *drawable);
+
+
+/* public functions */
+
+GimpLayer *
+gimp_drawable_get_floating_sel (GimpDrawable *drawable)
+{
+ g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
+
+ return drawable->private->floating_selection;
+}
+
+void
+gimp_drawable_attach_floating_sel (GimpDrawable *drawable,
+ GimpLayer *fs)
+{
+ GimpImage *image;
+
+ g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
+ g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
+ g_return_if_fail (gimp_drawable_get_floating_sel (drawable) == NULL);
+ g_return_if_fail (GIMP_IS_LAYER (fs));
+
+ GIMP_LOG (FLOATING_SELECTION, "%s", G_STRFUNC);
+
+ image = gimp_item_get_image (GIMP_ITEM (drawable));
+
+ drawable->private->floating_selection = fs;
+ gimp_image_set_floating_selection (image, fs);
+
+ /* clear the selection */
+ gimp_drawable_invalidate_boundary (GIMP_DRAWABLE (fs));
+
+ gimp_item_bind_visible_to_active (GIMP_ITEM (fs), FALSE);
+ gimp_filter_set_active (GIMP_FILTER (fs), FALSE);
+
+ _gimp_drawable_add_floating_sel_filter (drawable);
+
+ g_signal_connect (fs, "visibility-changed",
+ G_CALLBACK (gimp_drawable_fs_visibility_changed),
+ drawable);
+ g_signal_connect (fs, "excludes-backdrop-changed",
+ G_CALLBACK (gimp_drawable_fs_excludes_backdrop_changed),
+ drawable);
+ g_signal_connect (fs, "bounding-box-changed",
+ G_CALLBACK (gimp_drawable_fs_bounding_box_changed),
+ drawable);
+ g_signal_connect (fs, "update",
+ G_CALLBACK (gimp_drawable_fs_update),
+ drawable);
+
+ gimp_drawable_fs_update (fs,
+ 0, 0,
+ gimp_item_get_width (GIMP_ITEM (fs)),
+ gimp_item_get_height (GIMP_ITEM (fs)),
+ drawable);
+}
+
+void
+gimp_drawable_detach_floating_sel (GimpDrawable *drawable)
+{
+ GimpImage *image;
+ GimpLayer *fs;
+
+ g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
+ g_return_if_fail (gimp_drawable_get_floating_sel (drawable) != NULL);
+
+ GIMP_LOG (FLOATING_SELECTION, "%s", G_STRFUNC);
+
+ image = gimp_item_get_image (GIMP_ITEM (drawable));
+ fs = drawable->private->floating_selection;
+
+ gimp_drawable_remove_fs_filter (drawable);
+
+ g_signal_handlers_disconnect_by_func (fs,
+ gimp_drawable_fs_visibility_changed,
+ drawable);
+ g_signal_handlers_disconnect_by_func (fs,
+ gimp_drawable_fs_excludes_backdrop_changed,
+ drawable);
+ g_signal_handlers_disconnect_by_func (fs,
+ gimp_drawable_fs_bounding_box_changed,
+ drawable);
+ g_signal_handlers_disconnect_by_func (fs,
+ gimp_drawable_fs_update,
+ drawable);
+
+ gimp_drawable_fs_update (fs,
+ 0, 0,
+ gimp_item_get_width (GIMP_ITEM (fs)),
+ gimp_item_get_height (GIMP_ITEM (fs)),
+ drawable);
+
+ gimp_item_bind_visible_to_active (GIMP_ITEM (fs), TRUE);
+
+ /* clear the selection */
+ gimp_drawable_invalidate_boundary (GIMP_DRAWABLE (fs));
+
+ gimp_image_set_floating_selection (image, NULL);
+ drawable->private->floating_selection = NULL;
+}
+
+GimpFilter *
+gimp_drawable_get_floating_sel_filter (GimpDrawable *drawable)
+{
+ g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
+ g_return_val_if_fail (gimp_drawable_get_floating_sel (drawable) != NULL, NULL);
+
+ /* Ensure that the graph is construced before the filter is used.
+ * Otherwise, we rely on the projection to cause the graph to be
+ * constructed, which fails for images that aren't displayed.
+ */
+ gimp_filter_get_node (GIMP_FILTER (drawable));
+
+ return drawable->private->fs_filter;
+}
+
+
+/* private functions */
+
+void
+_gimp_drawable_add_floating_sel_filter (GimpDrawable *drawable)
+{
+ GimpDrawablePrivate *private = drawable->private;
+ GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
+ GimpLayer *fs = gimp_drawable_get_floating_sel (drawable);
+ GeglNode *node;
+ GeglNode *fs_source;
+
+ if (! private->source_node)
+ return;
+
+ private->fs_filter = gimp_filter_new (_("Floating Selection"));
+ gimp_viewable_set_icon_name (GIMP_VIEWABLE (private->fs_filter),
+ "gimp-floating-selection");
+
+ node = gimp_filter_get_node (private->fs_filter);
+
+ fs_source = gimp_drawable_get_source_node (GIMP_DRAWABLE (fs));
+
+ /* rip the fs' source node out of its graph */
+ if (fs->layer_offset_node)
+ {
+ gegl_node_disconnect (fs->layer_offset_node, "input");
+ gegl_node_remove_child (gimp_filter_get_node (GIMP_FILTER (fs)),
+ fs_source);
+ }
+
+ gegl_node_add_child (node, fs_source);
+
+ private->fs_applicator = gimp_applicator_new (node);
+
+ gimp_filter_set_applicator (private->fs_filter, private->fs_applicator);
+
+ gimp_applicator_set_cache (private->fs_applicator, TRUE);
+
+ private->fs_crop_node = gegl_node_new_child (node,
+ "operation", "gegl:nop",
+ NULL);
+
+ gegl_node_connect_to (fs_source, "output",
+ private->fs_crop_node, "input");
+ gegl_node_connect_to (private->fs_crop_node, "output",
+ node, "aux");
+
+ gimp_drawable_add_filter (drawable, private->fs_filter);
+
+ g_signal_connect (fs, "notify",
+ G_CALLBACK (gimp_drawable_fs_notify),
+ drawable);
+ g_signal_connect (drawable, "notify::offset-x",
+ G_CALLBACK (gimp_drawable_fs_notify),
+ drawable);
+ g_signal_connect (drawable, "notify::offset-y",
+ G_CALLBACK (gimp_drawable_fs_notify),
+ drawable);
+ g_signal_connect (drawable, "lock-position-changed",
+ G_CALLBACK (gimp_drawable_fs_lock_position_changed),
+ drawable);
+ g_signal_connect (drawable, "format-changed",
+ G_CALLBACK (gimp_drawable_fs_format_changed),
+ drawable);
+ g_signal_connect (image, "component-active-changed",
+ G_CALLBACK (gimp_drawable_fs_affect_changed),
+ drawable);
+ g_signal_connect (image, "mask-changed",
+ G_CALLBACK (gimp_drawable_fs_mask_changed),
+ drawable);
+
+ gimp_drawable_sync_fs_filter (drawable);
+}
+
+
+/* private functions */
+
+static void
+gimp_drawable_remove_fs_filter (GimpDrawable *drawable)
+{
+ GimpDrawablePrivate *private = drawable->private;
+ GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
+ GimpLayer *fs = gimp_drawable_get_floating_sel (drawable);
+
+ if (private->fs_filter)
+ {
+ GeglNode *node;
+ GeglNode *fs_source;
+
+ g_signal_handlers_disconnect_by_func (fs,
+ gimp_drawable_fs_notify,
+ drawable);
+ g_signal_handlers_disconnect_by_func (drawable,
+ gimp_drawable_fs_notify,
+ drawable);
+ g_signal_handlers_disconnect_by_func (drawable,
+ gimp_drawable_fs_lock_position_changed,
+ drawable);
+ g_signal_handlers_disconnect_by_func (drawable,
+ gimp_drawable_fs_format_changed,
+ drawable);
+ g_signal_handlers_disconnect_by_func (image,
+ gimp_drawable_fs_affect_changed,
+ drawable);
+ g_signal_handlers_disconnect_by_func (image,
+ gimp_drawable_fs_mask_changed,
+ drawable);
+
+ gimp_drawable_remove_filter (drawable, private->fs_filter);
+
+ node = gimp_filter_get_node (private->fs_filter);
+
+ fs_source = gimp_drawable_get_source_node (GIMP_DRAWABLE (fs));
+
+ gegl_node_remove_child (node, fs_source);
+
+ /* plug the fs' source node back into its graph */
+ if (fs->layer_offset_node)
+ {
+ gegl_node_add_child (gimp_filter_get_node (GIMP_FILTER (fs)),
+ fs_source);
+ gegl_node_connect_to (fs_source, "output",
+ fs->layer_offset_node, "input");
+ }
+
+ g_clear_object (&private->fs_filter);
+ g_clear_object (&private->fs_applicator);
+
+ private->fs_crop_node = NULL;
+
+ gimp_drawable_update_bounding_box (drawable);
+ }
+}
+
+static void
+gimp_drawable_sync_fs_filter (GimpDrawable *drawable)
+{
+ GimpDrawablePrivate *private = drawable->private;
+ GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
+ GimpChannel *mask = gimp_image_get_mask (image);
+ GimpLayer *fs = gimp_drawable_get_floating_sel (drawable);
+ gint off_x, off_y;
+ gint fs_off_x, fs_off_y;
+
+ gimp_filter_set_active (private->fs_filter,
+ gimp_item_get_visible (GIMP_ITEM (fs)));
+
+ gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
+ gimp_item_get_offset (GIMP_ITEM (fs), &fs_off_x, &fs_off_y);
+
+ if (gimp_item_get_clip (GIMP_ITEM (drawable), GIMP_TRANSFORM_RESIZE_ADJUST) ==
+ GIMP_TRANSFORM_RESIZE_CLIP ||
+ ! gimp_drawable_has_alpha (drawable))
+ {
+ gegl_node_set (
+ private->fs_crop_node,
+ "operation", "gegl:crop",
+ "x", (gdouble) (off_x - fs_off_x),
+ "y", (gdouble) (off_y - fs_off_y),
+ "width", (gdouble) gimp_item_get_width (GIMP_ITEM (drawable)),
+ "height", (gdouble) gimp_item_get_height (GIMP_ITEM (drawable)),
+ NULL);
+ }
+ else
+ {
+ gegl_node_set (
+ private->fs_crop_node,
+ "operation", "gegl:nop",
+ NULL);
+ }
+
+ gimp_applicator_set_apply_offset (private->fs_applicator,
+ fs_off_x - off_x,
+ fs_off_y - off_y);
+
+ if (gimp_channel_is_empty (mask))
+ {
+ gimp_applicator_set_mask_buffer (private->fs_applicator, NULL);
+ }
+ else
+ {
+ GeglBuffer *buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
+
+ gimp_applicator_set_mask_buffer (private->fs_applicator, buffer);
+ gimp_applicator_set_mask_offset (private->fs_applicator,
+ -off_x, -off_y);
+ }
+
+ gimp_applicator_set_opacity (private->fs_applicator,
+ gimp_layer_get_opacity (fs));
+ gimp_applicator_set_mode (private->fs_applicator,
+ gimp_layer_get_mode (fs),
+ gimp_layer_get_blend_space (fs),
+ gimp_layer_get_composite_space (fs),
+ gimp_layer_get_composite_mode (fs));
+ gimp_applicator_set_affect (private->fs_applicator,
+ gimp_drawable_get_active_mask (drawable));
+ gimp_applicator_set_output_format (private->fs_applicator,
+ gimp_drawable_get_format (drawable));
+
+ gimp_drawable_update_bounding_box (drawable);
+}
+
+static void
+gimp_drawable_fs_notify (GObject *object,
+ const GParamSpec *pspec,
+ GimpDrawable *drawable)
+{
+ if (! strcmp (pspec->name, "offset-x") ||
+ ! strcmp (pspec->name, "offset-y") ||
+ ! strcmp (pspec->name, "visible") ||
+ ! strcmp (pspec->name, "mode") ||
+ ! strcmp (pspec->name, "blend-space") ||
+ ! strcmp (pspec->name, "composite-space") ||
+ ! strcmp (pspec->name, "composite-mode") ||
+ ! strcmp (pspec->name, "opacity"))
+ {
+ gimp_drawable_sync_fs_filter (drawable);
+ }
+}
+
+static void
+gimp_drawable_fs_lock_position_changed (GimpDrawable *signal_drawable,
+ GimpDrawable *drawable)
+{
+ GimpLayer *fs = gimp_drawable_get_floating_sel (drawable);
+
+ gimp_drawable_sync_fs_filter (drawable);
+
+ gimp_drawable_update (GIMP_DRAWABLE (fs), 0, 0, -1, -1);
+}
+
+static void
+gimp_drawable_fs_format_changed (GimpDrawable *signal_drawable,
+ GimpDrawable *drawable)
+{
+ GimpLayer *fs = gimp_drawable_get_floating_sel (drawable);
+
+ gimp_drawable_sync_fs_filter (drawable);
+
+ gimp_drawable_update (GIMP_DRAWABLE (fs), 0, 0, -1, -1);
+}
+
+static void
+gimp_drawable_fs_affect_changed (GimpImage *image,
+ GimpChannelType channel,
+ GimpDrawable *drawable)
+{
+ GimpLayer *fs = gimp_drawable_get_floating_sel (drawable);
+
+ gimp_drawable_sync_fs_filter (drawable);
+
+ gimp_drawable_update (GIMP_DRAWABLE (fs), 0, 0, -1, -1);
+}
+
+static void
+gimp_drawable_fs_mask_changed (GimpImage *image,
+ GimpDrawable *drawable)
+{
+ GimpLayer *fs = gimp_drawable_get_floating_sel (drawable);
+
+ gimp_drawable_sync_fs_filter (drawable);
+
+ gimp_drawable_update (GIMP_DRAWABLE (fs), 0, 0, -1, -1);
+}
+
+static void
+gimp_drawable_fs_visibility_changed (GimpLayer *fs,
+ GimpDrawable *drawable)
+{
+ if (gimp_layer_get_excludes_backdrop (fs))
+ gimp_drawable_update (drawable, 0, 0, -1, -1);
+ else
+ gimp_drawable_update (GIMP_DRAWABLE (fs), 0, 0, -1, -1);
+}
+
+static void
+gimp_drawable_fs_excludes_backdrop_changed (GimpLayer *fs,
+ GimpDrawable *drawable)
+{
+ if (gimp_item_get_visible (GIMP_ITEM (fs)))
+ gimp_drawable_update (drawable, 0, 0, -1, -1);
+}
+
+static void
+gimp_drawable_fs_bounding_box_changed (GimpLayer *fs,
+ GimpDrawable *drawable)
+{
+ gimp_drawable_update_bounding_box (drawable);
+}
+
+static void
+gimp_drawable_fs_update (GimpLayer *fs,
+ gint x,
+ gint y,
+ gint width,
+ gint height,
+ GimpDrawable *drawable)
+{
+ GeglRectangle bounding_box;
+ GeglRectangle rect;
+ gint fs_off_x, fs_off_y;
+ gint off_x, off_y;
+
+ gimp_item_get_offset (GIMP_ITEM (fs), &fs_off_x, &fs_off_y);
+ gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
+
+ bounding_box = gimp_drawable_get_bounding_box (drawable);
+
+ bounding_box.x += off_x;
+ bounding_box.y += off_y;
+
+ rect.x = x + fs_off_x;
+ rect.y = y + fs_off_y;
+ rect.width = width;
+ rect.height = height;
+
+ if (gegl_rectangle_intersect (&rect, &rect, &bounding_box))
+ {
+ gimp_drawable_update (drawable,
+ rect.x - off_x, rect.y - off_y,
+ rect.width, rect.height);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-01 23:05:47 +0000