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-rw-r--r--app/core/gimpselection.c863
1 files changed, 863 insertions, 0 deletions
diff --git a/app/core/gimpselection.c b/app/core/gimpselection.c
new file mode 100644
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--- /dev/null
+++ b/app/core/gimpselection.c
@@ -0,0 +1,863 @@
+/* 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 <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "libgimpcolor/gimpcolor.h"
+
+#include "core-types.h"
+
+#include "gegl/gimp-babl.h"
+#include "gegl/gimp-gegl-apply-operation.h"
+#include "gegl/gimp-gegl-loops.h"
+
+#include "gimp.h"
+#include "gimpcontext.h"
+#include "gimpdrawable-edit.h"
+#include "gimpdrawable-private.h"
+#include "gimperror.h"
+#include "gimpimage.h"
+#include "gimpimage-undo.h"
+#include "gimpimage-undo-push.h"
+#include "gimplayer.h"
+#include "gimplayer-new.h"
+#include "gimplayermask.h"
+#include "gimplayer-floating-selection.h"
+#include "gimppickable.h"
+#include "gimpselection.h"
+
+#include "gimp-intl.h"
+
+
+static gboolean gimp_selection_is_attached (GimpItem *item);
+static GimpItemTree * gimp_selection_get_tree (GimpItem *item);
+static void gimp_selection_translate (GimpItem *item,
+ gdouble offset_x,
+ gdouble offset_y,
+ gboolean push_undo);
+static void gimp_selection_scale (GimpItem *item,
+ gint new_width,
+ gint new_height,
+ gint new_offset_x,
+ gint new_offset_y,
+ GimpInterpolationType interp_type,
+ GimpProgress *progress);
+static void gimp_selection_resize (GimpItem *item,
+ GimpContext *context,
+ GimpFillType fill_type,
+ gint new_width,
+ gint new_height,
+ gint offset_x,
+ gint offset_y);
+static void gimp_selection_flip (GimpItem *item,
+ GimpContext *context,
+ GimpOrientationType flip_type,
+ gdouble axis,
+ gboolean clip_result);
+static void gimp_selection_rotate (GimpItem *item,
+ GimpContext *context,
+ GimpRotationType rotation_type,
+ gdouble center_x,
+ gdouble center_y,
+ gboolean clip_result);
+static gboolean gimp_selection_fill (GimpItem *item,
+ GimpDrawable *drawable,
+ GimpFillOptions *fill_options,
+ gboolean push_undo,
+ GimpProgress *progress,
+ GError **error);
+static gboolean gimp_selection_stroke (GimpItem *item,
+ GimpDrawable *drawable,
+ GimpStrokeOptions *stroke_options,
+ gboolean push_undo,
+ GimpProgress *progress,
+ GError **error);
+static void gimp_selection_convert_type (GimpDrawable *drawable,
+ GimpImage *dest_image,
+ const Babl *new_format,
+ GimpColorProfile *dest_profile,
+ GeglDitherMethod layer_dither_type,
+ GeglDitherMethod mask_dither_type,
+ gboolean push_undo,
+ GimpProgress *progress);
+static void gimp_selection_invalidate_boundary (GimpDrawable *drawable);
+
+static gboolean gimp_selection_boundary (GimpChannel *channel,
+ const GimpBoundSeg **segs_in,
+ const GimpBoundSeg **segs_out,
+ gint *num_segs_in,
+ gint *num_segs_out,
+ gint x1,
+ gint y1,
+ gint x2,
+ gint y2);
+static gboolean gimp_selection_is_empty (GimpChannel *channel);
+static void gimp_selection_feather (GimpChannel *channel,
+ gdouble radius_x,
+ gdouble radius_y,
+ gboolean edge_lock,
+ gboolean push_undo);
+static void gimp_selection_sharpen (GimpChannel *channel,
+ gboolean push_undo);
+static void gimp_selection_clear (GimpChannel *channel,
+ const gchar *undo_desc,
+ gboolean push_undo);
+static void gimp_selection_all (GimpChannel *channel,
+ gboolean push_undo);
+static void gimp_selection_invert (GimpChannel *channel,
+ gboolean push_undo);
+static void gimp_selection_border (GimpChannel *channel,
+ gint radius_x,
+ gint radius_y,
+ GimpChannelBorderStyle style,
+ gboolean edge_lock,
+ gboolean push_undo);
+static void gimp_selection_grow (GimpChannel *channel,
+ gint radius_x,
+ gint radius_y,
+ gboolean push_undo);
+static void gimp_selection_shrink (GimpChannel *channel,
+ gint radius_x,
+ gint radius_y,
+ gboolean edge_lock,
+ gboolean push_undo);
+static void gimp_selection_flood (GimpChannel *channel,
+ gboolean push_undo);
+
+
+G_DEFINE_TYPE (GimpSelection, gimp_selection, GIMP_TYPE_CHANNEL)
+
+#define parent_class gimp_selection_parent_class
+
+
+static void
+gimp_selection_class_init (GimpSelectionClass *klass)
+{
+ GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
+ GimpItemClass *item_class = GIMP_ITEM_CLASS (klass);
+ GimpDrawableClass *drawable_class = GIMP_DRAWABLE_CLASS (klass);
+ GimpChannelClass *channel_class = GIMP_CHANNEL_CLASS (klass);
+
+ viewable_class->default_icon_name = "gimp-selection";
+
+ item_class->is_attached = gimp_selection_is_attached;
+ item_class->get_tree = gimp_selection_get_tree;
+ item_class->translate = gimp_selection_translate;
+ item_class->scale = gimp_selection_scale;
+ item_class->resize = gimp_selection_resize;
+ item_class->flip = gimp_selection_flip;
+ item_class->rotate = gimp_selection_rotate;
+ item_class->fill = gimp_selection_fill;
+ item_class->stroke = gimp_selection_stroke;
+ item_class->default_name = _("Selection Mask");
+ item_class->translate_desc = C_("undo-type", "Move Selection");
+ item_class->fill_desc = C_("undo-type", "Fill Selection");
+ item_class->stroke_desc = C_("undo-type", "Stroke Selection");
+
+ drawable_class->convert_type = gimp_selection_convert_type;
+ drawable_class->invalidate_boundary = gimp_selection_invalidate_boundary;
+
+ channel_class->boundary = gimp_selection_boundary;
+ channel_class->is_empty = gimp_selection_is_empty;
+ channel_class->feather = gimp_selection_feather;
+ channel_class->sharpen = gimp_selection_sharpen;
+ channel_class->clear = gimp_selection_clear;
+ channel_class->all = gimp_selection_all;
+ channel_class->invert = gimp_selection_invert;
+ channel_class->border = gimp_selection_border;
+ channel_class->grow = gimp_selection_grow;
+ channel_class->shrink = gimp_selection_shrink;
+ channel_class->flood = gimp_selection_flood;
+
+ channel_class->feather_desc = C_("undo-type", "Feather Selection");
+ channel_class->sharpen_desc = C_("undo-type", "Sharpen Selection");
+ channel_class->clear_desc = C_("undo-type", "Select None");
+ channel_class->all_desc = C_("undo-type", "Select All");
+ channel_class->invert_desc = C_("undo-type", "Invert Selection");
+ channel_class->border_desc = C_("undo-type", "Border Selection");
+ channel_class->grow_desc = C_("undo-type", "Grow Selection");
+ channel_class->shrink_desc = C_("undo-type", "Shrink Selection");
+ channel_class->flood_desc = C_("undo-type", "Remove Holes");
+}
+
+static void
+gimp_selection_init (GimpSelection *selection)
+{
+}
+
+static gboolean
+gimp_selection_is_attached (GimpItem *item)
+{
+ return (GIMP_IS_IMAGE (gimp_item_get_image (item)) &&
+ gimp_image_get_mask (gimp_item_get_image (item)) ==
+ GIMP_CHANNEL (item));
+}
+
+static GimpItemTree *
+gimp_selection_get_tree (GimpItem *item)
+{
+ return NULL;
+}
+
+static void
+gimp_selection_translate (GimpItem *item,
+ gdouble offset_x,
+ gdouble offset_y,
+ gboolean push_undo)
+{
+ GIMP_ITEM_CLASS (parent_class)->translate (item, offset_x, offset_y,
+ push_undo);
+}
+
+static void
+gimp_selection_scale (GimpItem *item,
+ gint new_width,
+ gint new_height,
+ gint new_offset_x,
+ gint new_offset_y,
+ GimpInterpolationType interp_type,
+ GimpProgress *progress)
+{
+ GIMP_ITEM_CLASS (parent_class)->scale (item, new_width, new_height,
+ new_offset_x, new_offset_y,
+ interp_type, progress);
+
+ gimp_item_set_offset (item, 0, 0);
+}
+
+static void
+gimp_selection_resize (GimpItem *item,
+ GimpContext *context,
+ GimpFillType fill_type,
+ gint new_width,
+ gint new_height,
+ gint offset_x,
+ gint offset_y)
+{
+ GIMP_ITEM_CLASS (parent_class)->resize (item, context, GIMP_FILL_TRANSPARENT,
+ new_width, new_height,
+ offset_x, offset_y);
+
+ gimp_item_set_offset (item, 0, 0);
+}
+
+static void
+gimp_selection_flip (GimpItem *item,
+ GimpContext *context,
+ GimpOrientationType flip_type,
+ gdouble axis,
+ gboolean clip_result)
+{
+ GIMP_ITEM_CLASS (parent_class)->flip (item, context, flip_type, axis, TRUE);
+}
+
+static void
+gimp_selection_rotate (GimpItem *item,
+ GimpContext *context,
+ GimpRotationType rotation_type,
+ gdouble center_x,
+ gdouble center_y,
+ gboolean clip_result)
+{
+ GIMP_ITEM_CLASS (parent_class)->rotate (item, context, rotation_type,
+ center_x, center_y,
+ clip_result);
+}
+
+static gboolean
+gimp_selection_fill (GimpItem *item,
+ GimpDrawable *drawable,
+ GimpFillOptions *fill_options,
+ gboolean push_undo,
+ GimpProgress *progress,
+ GError **error)
+{
+ GimpSelection *selection = GIMP_SELECTION (item);
+ const GimpBoundSeg *dummy_in;
+ const GimpBoundSeg *dummy_out;
+ gint num_dummy_in;
+ gint num_dummy_out;
+ gboolean retval;
+
+ if (! gimp_channel_boundary (GIMP_CHANNEL (selection),
+ &dummy_in, &dummy_out,
+ &num_dummy_in, &num_dummy_out,
+ 0, 0, 0, 0))
+ {
+ g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
+ _("There is no selection to fill."));
+ return FALSE;
+ }
+
+ gimp_selection_suspend (selection);
+
+ retval = GIMP_ITEM_CLASS (parent_class)->fill (item, drawable,
+ fill_options,
+ push_undo, progress, error);
+
+ gimp_selection_resume (selection);
+
+ return retval;
+}
+
+static gboolean
+gimp_selection_stroke (GimpItem *item,
+ GimpDrawable *drawable,
+ GimpStrokeOptions *stroke_options,
+ gboolean push_undo,
+ GimpProgress *progress,
+ GError **error)
+{
+ GimpSelection *selection = GIMP_SELECTION (item);
+ const GimpBoundSeg *dummy_in;
+ const GimpBoundSeg *dummy_out;
+ gint num_dummy_in;
+ gint num_dummy_out;
+ gboolean retval;
+
+ if (! gimp_channel_boundary (GIMP_CHANNEL (selection),
+ &dummy_in, &dummy_out,
+ &num_dummy_in, &num_dummy_out,
+ 0, 0, 0, 0))
+ {
+ g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
+ _("There is no selection to stroke."));
+ return FALSE;
+ }
+
+ gimp_selection_suspend (selection);
+
+ retval = GIMP_ITEM_CLASS (parent_class)->stroke (item, drawable,
+ stroke_options,
+ push_undo, progress, error);
+
+ gimp_selection_resume (selection);
+
+ return retval;
+}
+
+static void
+gimp_selection_convert_type (GimpDrawable *drawable,
+ GimpImage *dest_image,
+ const Babl *new_format,
+ GimpColorProfile *dest_profile,
+ GeglDitherMethod layer_dither_type,
+ GeglDitherMethod mask_dither_type,
+ gboolean push_undo,
+ GimpProgress *progress)
+{
+ new_format =
+ gimp_babl_mask_format (gimp_babl_format_get_precision (new_format));
+
+ GIMP_DRAWABLE_CLASS (parent_class)->convert_type (drawable, dest_image,
+ new_format,
+ dest_profile,
+ layer_dither_type,
+ mask_dither_type,
+ push_undo,
+ progress);
+}
+
+static void
+gimp_selection_invalidate_boundary (GimpDrawable *drawable)
+{
+ GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
+ GimpLayer *layer;
+
+ /* Turn the current selection off */
+ gimp_image_selection_invalidate (image);
+
+ GIMP_DRAWABLE_CLASS (parent_class)->invalidate_boundary (drawable);
+
+ /* If there is a floating selection, update it's area...
+ * we need to do this since this selection mask can act as an additional
+ * mask in the composition of the floating selection
+ */
+ layer = gimp_image_get_active_layer (image);
+
+ if (layer && gimp_layer_is_floating_sel (layer))
+ {
+ gimp_drawable_update (GIMP_DRAWABLE (layer), 0, 0, -1, -1);
+ }
+
+#if 0
+ /* invalidate the preview */
+ drawable->private->preview_valid = FALSE;
+#endif
+}
+
+static gboolean
+gimp_selection_boundary (GimpChannel *channel,
+ const GimpBoundSeg **segs_in,
+ const GimpBoundSeg **segs_out,
+ gint *num_segs_in,
+ gint *num_segs_out,
+ gint unused1,
+ gint unused2,
+ gint unused3,
+ gint unused4)
+{
+ GimpImage *image = gimp_item_get_image (GIMP_ITEM (channel));
+ GimpDrawable *drawable;
+ GimpLayer *layer;
+
+ if ((layer = gimp_image_get_floating_selection (image)))
+ {
+ /* If there is a floating selection, then
+ * we need to do some slightly different boundaries.
+ * Instead of inside and outside boundaries being defined
+ * by the extents of the layer, the inside boundary (the one
+ * that actually marches and is black/white) is the boundary of
+ * the floating selection. The outside boundary (doesn't move,
+ * is black/gray) is defined as the normal selection mask
+ */
+
+ /* Find the selection mask boundary */
+ GIMP_CHANNEL_CLASS (parent_class)->boundary (channel,
+ segs_in, segs_out,
+ num_segs_in, num_segs_out,
+ 0, 0, 0, 0);
+
+ /* Find the floating selection boundary */
+ *segs_in = floating_sel_boundary (layer, num_segs_in);
+
+ return TRUE;
+ }
+ else if ((drawable = gimp_image_get_active_drawable (image)) &&
+ GIMP_IS_CHANNEL (drawable))
+ {
+ /* Otherwise, return the boundary...if a channel is active */
+
+ return GIMP_CHANNEL_CLASS (parent_class)->boundary (channel,
+ segs_in, segs_out,
+ num_segs_in,
+ num_segs_out,
+ 0, 0,
+ gimp_image_get_width (image),
+ gimp_image_get_height (image));
+ }
+ else if ((layer = gimp_image_get_active_layer (image)))
+ {
+ /* If a layer is active, we return multiple boundaries based
+ * on the extents
+ */
+
+ gint x1, y1;
+ gint x2, y2;
+ gint offset_x;
+ gint offset_y;
+
+ gimp_item_get_offset (GIMP_ITEM (layer), &offset_x, &offset_y);
+
+ x1 = CLAMP (offset_x, 0, gimp_image_get_width (image));
+ y1 = CLAMP (offset_y, 0, gimp_image_get_height (image));
+ x2 = CLAMP (offset_x + gimp_item_get_width (GIMP_ITEM (layer)),
+ 0, gimp_image_get_width (image));
+ y2 = CLAMP (offset_y + gimp_item_get_height (GIMP_ITEM (layer)),
+ 0, gimp_image_get_height (image));
+
+ return GIMP_CHANNEL_CLASS (parent_class)->boundary (channel,
+ segs_in, segs_out,
+ num_segs_in,
+ num_segs_out,
+ x1, y1, x2, y2);
+ }
+
+ *segs_in = NULL;
+ *segs_out = NULL;
+ *num_segs_in = 0;
+ *num_segs_out = 0;
+
+ return FALSE;
+}
+
+static gboolean
+gimp_selection_is_empty (GimpChannel *channel)
+{
+ GimpSelection *selection = GIMP_SELECTION (channel);
+
+ /* in order to allow stroking of selections, we need to pretend here
+ * that the selection mask is empty so that it doesn't mask the paint
+ * during the stroke operation.
+ */
+ if (selection->suspend_count > 0)
+ return TRUE;
+
+ return GIMP_CHANNEL_CLASS (parent_class)->is_empty (channel);
+}
+
+static void
+gimp_selection_feather (GimpChannel *channel,
+ gdouble radius_x,
+ gdouble radius_y,
+ gboolean edge_lock,
+ gboolean push_undo)
+{
+ GIMP_CHANNEL_CLASS (parent_class)->feather (channel, radius_x, radius_y,
+ edge_lock, push_undo);
+}
+
+static void
+gimp_selection_sharpen (GimpChannel *channel,
+ gboolean push_undo)
+{
+ GIMP_CHANNEL_CLASS (parent_class)->sharpen (channel, push_undo);
+}
+
+static void
+gimp_selection_clear (GimpChannel *channel,
+ const gchar *undo_desc,
+ gboolean push_undo)
+{
+ GIMP_CHANNEL_CLASS (parent_class)->clear (channel, undo_desc, push_undo);
+}
+
+static void
+gimp_selection_all (GimpChannel *channel,
+ gboolean push_undo)
+{
+ GIMP_CHANNEL_CLASS (parent_class)->all (channel, push_undo);
+}
+
+static void
+gimp_selection_invert (GimpChannel *channel,
+ gboolean push_undo)
+{
+ GIMP_CHANNEL_CLASS (parent_class)->invert (channel, push_undo);
+}
+
+static void
+gimp_selection_border (GimpChannel *channel,
+ gint radius_x,
+ gint radius_y,
+ GimpChannelBorderStyle style,
+ gboolean edge_lock,
+ gboolean push_undo)
+{
+ GIMP_CHANNEL_CLASS (parent_class)->border (channel,
+ radius_x, radius_y,
+ style, edge_lock,
+ push_undo);
+}
+
+static void
+gimp_selection_grow (GimpChannel *channel,
+ gint radius_x,
+ gint radius_y,
+ gboolean push_undo)
+{
+ GIMP_CHANNEL_CLASS (parent_class)->grow (channel,
+ radius_x, radius_y,
+ push_undo);
+}
+
+static void
+gimp_selection_shrink (GimpChannel *channel,
+ gint radius_x,
+ gint radius_y,
+ gboolean edge_lock,
+ gboolean push_undo)
+{
+ GIMP_CHANNEL_CLASS (parent_class)->shrink (channel,
+ radius_x, radius_y, edge_lock,
+ push_undo);
+}
+
+static void
+gimp_selection_flood (GimpChannel *channel,
+ gboolean push_undo)
+{
+ GIMP_CHANNEL_CLASS (parent_class)->flood (channel, push_undo);
+}
+
+
+/* public functions */
+
+GimpChannel *
+gimp_selection_new (GimpImage *image,
+ gint width,
+ gint height)
+{
+ GimpRGB black = { 0.0, 0.0, 0.0, 0.5 };
+ GimpChannel *channel;
+
+ g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
+ g_return_val_if_fail (width > 0 && height > 0, NULL);
+
+ channel = GIMP_CHANNEL (gimp_drawable_new (GIMP_TYPE_SELECTION,
+ image, NULL,
+ 0, 0, width, height,
+ gimp_image_get_mask_format (image)));
+
+ gimp_channel_set_color (channel, &black, FALSE);
+ gimp_channel_set_show_masked (channel, TRUE);
+
+ channel->x2 = width;
+ channel->y2 = height;
+
+ return channel;
+}
+
+gint
+gimp_selection_suspend (GimpSelection *selection)
+{
+ g_return_val_if_fail (GIMP_IS_SELECTION (selection), 0);
+
+ selection->suspend_count++;
+
+ return selection->suspend_count;
+}
+
+gint
+gimp_selection_resume (GimpSelection *selection)
+{
+ g_return_val_if_fail (GIMP_IS_SELECTION (selection), 0);
+ g_return_val_if_fail (selection->suspend_count > 0, 0);
+
+ selection->suspend_count--;
+
+ return selection->suspend_count;
+}
+
+GeglBuffer *
+gimp_selection_extract (GimpSelection *selection,
+ GimpPickable *pickable,
+ GimpContext *context,
+ gboolean cut_image,
+ gboolean keep_indexed,
+ gboolean add_alpha,
+ gint *offset_x,
+ gint *offset_y,
+ GError **error)
+{
+ GimpImage *image;
+ GeglBuffer *src_buffer;
+ GeglBuffer *dest_buffer;
+ const Babl *src_format;
+ const Babl *dest_format;
+ gint x1, y1, x2, y2;
+ gboolean non_empty;
+ gint off_x, off_y;
+
+ g_return_val_if_fail (GIMP_IS_SELECTION (selection), NULL);
+ g_return_val_if_fail (GIMP_IS_PICKABLE (pickable), NULL);
+ if (GIMP_IS_ITEM (pickable))
+ g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (pickable)), NULL);
+ g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ image = gimp_pickable_get_image (pickable);
+
+ /* If there are no bounds, then just extract the entire image
+ * This may not be the correct behavior, but after getting rid
+ * of floating selections, it's still tempting to "cut" or "copy"
+ * a small layer and expect it to work, even though there is no
+ * actual selection mask
+ */
+ if (GIMP_IS_DRAWABLE (pickable))
+ {
+ non_empty = gimp_item_mask_bounds (GIMP_ITEM (pickable),
+ &x1, &y1, &x2, &y2);
+
+ gimp_item_get_offset (GIMP_ITEM (pickable), &off_x, &off_y);
+ }
+ else
+ {
+ non_empty = gimp_item_bounds (GIMP_ITEM (selection),
+ &x1, &y1, &x2, &y2);
+ x2 += x1;
+ y2 += y1;
+
+ off_x = 0;
+ off_y = 0;
+
+ /* can't cut from non-drawables, fall back to copy */
+ cut_image = FALSE;
+ }
+
+ if (non_empty && ((x1 == x2) || (y1 == y2)))
+ {
+ g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
+ _("Unable to cut or copy because the "
+ "selected region is empty."));
+ return NULL;
+ }
+
+ /* If there is a selection, we must add alpha because the selection
+ * could have any shape.
+ */
+ if (non_empty)
+ add_alpha = TRUE;
+
+ src_format = gimp_pickable_get_format (pickable);
+
+ /* How many bytes in the temp buffer? */
+ if (babl_format_is_palette (src_format) && ! keep_indexed)
+ {
+ dest_format = gimp_image_get_format (image, GIMP_RGB,
+ gimp_image_get_precision (image),
+ add_alpha ||
+ babl_format_has_alpha (src_format));
+ }
+ else
+ {
+ if (add_alpha)
+ dest_format = gimp_pickable_get_format_with_alpha (pickable);
+ else
+ dest_format = src_format;
+ }
+
+ gimp_pickable_flush (pickable);
+
+ src_buffer = gimp_pickable_get_buffer (pickable);
+
+ /* Allocate the temp buffer */
+ dest_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, x2 - x1, y2 - y1),
+ dest_format);
+
+ /* First, copy the pixels, possibly doing INDEXED->RGB and adding alpha */
+ gimp_gegl_buffer_copy (src_buffer, GEGL_RECTANGLE (x1, y1, x2 - x1, y2 - y1),
+ GEGL_ABYSS_NONE,
+ dest_buffer, GEGL_RECTANGLE (0, 0, 0, 0));
+
+ if (non_empty)
+ {
+ /* If there is a selection, mask the dest_buffer with it */
+
+ GeglBuffer *mask_buffer;
+
+ mask_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (selection));
+
+ gimp_gegl_apply_opacity (dest_buffer, NULL, NULL, dest_buffer,
+ mask_buffer,
+ - (off_x + x1),
+ - (off_y + y1),
+ 1.0);
+
+ if (cut_image)
+ {
+ gimp_drawable_edit_clear (GIMP_DRAWABLE (pickable), context);
+ }
+ }
+ else if (cut_image)
+ {
+ /* If we're cutting without selection, remove either the layer
+ * (or floating selection), the layer mask, or the channel
+ */
+ if (GIMP_IS_LAYER (pickable))
+ {
+ gimp_image_remove_layer (image, GIMP_LAYER (pickable),
+ TRUE, NULL);
+ }
+ else if (GIMP_IS_LAYER_MASK (pickable))
+ {
+ gimp_layer_apply_mask (gimp_layer_mask_get_layer (GIMP_LAYER_MASK (pickable)),
+ GIMP_MASK_DISCARD, TRUE);
+ }
+ else if (GIMP_IS_CHANNEL (pickable))
+ {
+ gimp_image_remove_channel (image, GIMP_CHANNEL (pickable),
+ TRUE, NULL);
+ }
+ }
+
+ *offset_x = x1 + off_x;
+ *offset_y = y1 + off_y;
+
+ return dest_buffer;
+}
+
+GimpLayer *
+gimp_selection_float (GimpSelection *selection,
+ GimpDrawable *drawable,
+ GimpContext *context,
+ gboolean cut_image,
+ gint off_x,
+ gint off_y,
+ GError **error)
+{
+ GimpImage *image;
+ GimpLayer *layer;
+ GeglBuffer *buffer;
+ GimpColorProfile *profile;
+ gint x1, y1;
+ gint x2, y2;
+
+ g_return_val_if_fail (GIMP_IS_SELECTION (selection), NULL);
+ g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
+ g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
+ g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
+ g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+ image = gimp_item_get_image (GIMP_ITEM (selection));
+
+ /* Make sure there is a region to float... */
+ if (! gimp_item_mask_bounds (GIMP_ITEM (drawable), &x1, &y1, &x2, &y2) ||
+ (x1 == x2 || y1 == y2))
+ {
+ g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
+ _("Cannot float selection because the selected "
+ "region is empty."));
+ return NULL;
+ }
+
+ /* Start an undo group */
+ gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_FS_FLOAT,
+ C_("undo-type", "Float Selection"));
+
+ /* Cut or copy the selected region */
+ buffer = gimp_selection_extract (selection, GIMP_PICKABLE (drawable), context,
+ cut_image, FALSE, TRUE,
+ &x1, &y1, NULL);
+
+ profile = gimp_color_managed_get_color_profile (GIMP_COLOR_MANAGED (drawable));
+
+ /* Clear the selection */
+ gimp_channel_clear (GIMP_CHANNEL (selection), NULL, TRUE);
+
+ /* Create a new layer from the buffer, using the drawable's type
+ * because it may be different from the image's type if we cut from
+ * a channel or layer mask
+ */
+ layer = gimp_layer_new_from_gegl_buffer (buffer, image,
+ gimp_drawable_get_format_with_alpha (drawable),
+ _("Floated Layer"),
+ GIMP_OPACITY_OPAQUE,
+ gimp_image_get_default_new_layer_mode (image),
+ profile);
+
+ /* Set the offsets */
+ gimp_item_set_offset (GIMP_ITEM (layer), x1 + off_x, y1 + off_y);
+
+ /* Free the temp buffer */
+ g_object_unref (buffer);
+
+ /* Add the floating layer to the image */
+ floating_sel_attach (layer, drawable);
+
+ /* End an undo group */
+ gimp_image_undo_group_end (image);
+
+ /* invalidate the image's boundary variables */
+ GIMP_CHANNEL (selection)->boundary_known = FALSE;
+
+ return layer;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-18 06:14:44 +0000