Gimp/app/core/gimpchannel-select.c
Jehan 9a2f5b0709 app: rework and fix the logic for copy-pasting multiple drawables.
There were a lot of incertainty of what should happen when we copy layers being
descendant of each other (i.e. when you select a group layer and some of its
children), then when you paste such data. So we sat down with Aryeom and tried
to come up with some consistent behavior which is somewhat expectable, but also
which would allow the most use-case.

Otherwise it was making very weird result when pasting the data, duplicating
some layers and whatnot, which was obviously a buggy behavior and never the
expected result.

We decided that if you select one leaf item, then even if you also selected a
parent item, it would be as though the parent was not selected. This is very
often what you expect anyway when you select a whole bunch of layers and would
work well if, say, you shift-click over many layers in sub-groups. Then you
wouldn't have to manually ctrl-click to unselect every group.

Then what if you were instead expecting to copy many groups? Then you could
shift-click the group arrow, closing all same-level groups. Once they are all
closed, you can shift-click the groups to only select group layers, not their
contents.

This way, both use cases are still quite doable easily with this default choice.
2022-11-12 18:28:58 +01:00

648 lines
24 KiB
C

/* 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 <string.h>
#include <cairo.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpmath/gimpmath.h"
#include "core-types.h"
#include "gegl/gimp-gegl-apply-operation.h"
#include "gegl/gimp-gegl-loops.h"
#include "gegl/gimp-gegl-mask-combine.h"
#include "gimp.h"
#include "gimpchannel.h"
#include "gimpchannel-select.h"
#include "gimpchannel-combine.h"
#include "gimpcontainer.h"
#include "gimpimage.h"
#include "gimpimage-new.h"
#include "gimppickable.h"
#include "gimppickable-contiguous-region.h"
#include "gimpscanconvert.h"
#include "vectors/gimpstroke.h"
#include "vectors/gimpvectors.h"
#include "gimp-intl.h"
/* basic selection functions */
void
gimp_channel_select_rectangle (GimpChannel *channel,
gint x,
gint y,
gint w,
gint h,
GimpChannelOps op,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
if (push_undo)
gimp_channel_push_undo (channel, C_("undo-type", "Rectangle Select"));
/* if feathering for rect, make a new mask with the
* rectangle and feather that with the old mask
*/
if (feather)
{
GimpItem *item = GIMP_ITEM (channel);
GeglBuffer *add_on;
add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item)),
babl_format ("Y float"));
gimp_gegl_mask_combine_rect (add_on, GIMP_CHANNEL_OP_REPLACE, x, y, w, h);
gimp_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
feather_radius_x,
feather_radius_y,
TRUE);
gimp_channel_combine_buffer (channel, add_on, op, 0, 0);
g_object_unref (add_on);
}
else
{
gimp_channel_combine_rect (channel, op, x, y, w, h);
}
}
void
gimp_channel_select_ellipse (GimpChannel *channel,
gint x,
gint y,
gint w,
gint h,
GimpChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
if (push_undo)
gimp_channel_push_undo (channel, C_("undo-type", "Ellipse Select"));
/* if feathering for rect, make a new mask with the
* rectangle and feather that with the old mask
*/
if (feather)
{
GimpItem *item = GIMP_ITEM (channel);
GeglBuffer *add_on;
add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item)),
babl_format ("Y float"));
gimp_gegl_mask_combine_ellipse (add_on, GIMP_CHANNEL_OP_REPLACE,
x, y, w, h, antialias);
gimp_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
feather_radius_x,
feather_radius_y,
TRUE);
gimp_channel_combine_buffer (channel, add_on, op, 0, 0);
g_object_unref (add_on);
}
else
{
gimp_channel_combine_ellipse (channel, op, x, y, w, h, antialias);
}
}
void
gimp_channel_select_round_rect (GimpChannel *channel,
gint x,
gint y,
gint w,
gint h,
gdouble corner_radius_x,
gdouble corner_radius_y,
GimpChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y,
gboolean push_undo)
{
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
if (push_undo)
gimp_channel_push_undo (channel, C_("undo-type", "Rounded Rectangle Select"));
/* if feathering for rect, make a new mask with the
* rectangle and feather that with the old mask
*/
if (feather)
{
GimpItem *item = GIMP_ITEM (channel);
GeglBuffer *add_on;
add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item)),
babl_format ("Y float"));
gimp_gegl_mask_combine_ellipse_rect (add_on, GIMP_CHANNEL_OP_REPLACE,
x, y, w, h,
corner_radius_x, corner_radius_y,
antialias);
gimp_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
feather_radius_x,
feather_radius_y,
TRUE);
gimp_channel_combine_buffer (channel, add_on, op, 0, 0);
g_object_unref (add_on);
}
else
{
gimp_channel_combine_ellipse_rect (channel, op, x, y, w, h,
corner_radius_x, corner_radius_y,
antialias);
}
}
/* select by GimpScanConvert functions */
void
gimp_channel_select_scan_convert (GimpChannel *channel,
const gchar *undo_desc,
GimpScanConvert *scan_convert,
gint offset_x,
gint offset_y,
GimpChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y,
gboolean push_undo)
{
GimpItem *item;
GeglBuffer *add_on;
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
g_return_if_fail (undo_desc != NULL);
g_return_if_fail (scan_convert != NULL);
if (push_undo)
gimp_channel_push_undo (channel, undo_desc);
item = GIMP_ITEM (channel);
add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item)),
babl_format ("Y float"));
gimp_scan_convert_render (scan_convert, add_on,
offset_x, offset_y, antialias);
if (feather)
gimp_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
feather_radius_x,
feather_radius_y,
TRUE);
gimp_channel_combine_buffer (channel, add_on, op, 0, 0);
g_object_unref (add_on);
}
void
gimp_channel_select_polygon (GimpChannel *channel,
const gchar *undo_desc,
gint n_points,
const GimpVector2 *points,
GimpChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y,
gboolean push_undo)
{
GimpScanConvert *scan_convert;
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
g_return_if_fail (undo_desc != NULL);
scan_convert = gimp_scan_convert_new ();
gimp_scan_convert_add_polyline (scan_convert, n_points, points, TRUE);
gimp_channel_select_scan_convert (channel, undo_desc, scan_convert, 0, 0,
op, antialias, feather,
feather_radius_x, feather_radius_y,
push_undo);
gimp_scan_convert_free (scan_convert);
}
void
gimp_channel_select_vectors (GimpChannel *channel,
const gchar *undo_desc,
GimpVectors *vectors,
GimpChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y,
gboolean push_undo)
{
const GimpBezierDesc *bezier;
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
g_return_if_fail (undo_desc != NULL);
g_return_if_fail (GIMP_IS_VECTORS (vectors));
bezier = gimp_vectors_get_bezier (vectors);
if (bezier && bezier->num_data > 4)
{
GimpScanConvert *scan_convert;
scan_convert = gimp_scan_convert_new ();
gimp_scan_convert_add_bezier (scan_convert, bezier);
gimp_channel_select_scan_convert (channel, undo_desc, scan_convert, 0, 0,
op, antialias, feather,
feather_radius_x, feather_radius_y,
push_undo);
gimp_scan_convert_free (scan_convert);
}
}
/* select by GimpChannel functions */
void
gimp_channel_select_buffer (GimpChannel *channel,
const gchar *undo_desc,
GeglBuffer *add_on,
gint offset_x,
gint offset_y,
GimpChannelOps op,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
g_return_if_fail (undo_desc != NULL);
g_return_if_fail (GEGL_IS_BUFFER (add_on));
gimp_channel_push_undo (channel, undo_desc);
if (feather)
{
GimpItem *item = GIMP_ITEM (channel);
GeglBuffer *add_on2;
add_on2 = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item)),
babl_format ("Y float"));
gimp_gegl_mask_combine_buffer (add_on2, add_on,
GIMP_CHANNEL_OP_REPLACE,
offset_x, offset_y);
gimp_gegl_apply_feather (add_on2, NULL, NULL, add_on2, NULL,
feather_radius_x,
feather_radius_y,
TRUE);
gimp_channel_combine_buffer (channel, add_on2, op, 0, 0);
g_object_unref (add_on2);
}
else
{
gimp_channel_combine_buffer (channel, add_on, op, offset_x, offset_y);
}
}
void
gimp_channel_select_channel (GimpChannel *channel,
const gchar *undo_desc,
GimpChannel *add_on,
gint offset_x,
gint offset_y,
GimpChannelOps op,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
g_return_if_fail (undo_desc != NULL);
g_return_if_fail (GIMP_IS_CHANNEL (add_on));
gimp_channel_select_buffer (channel, undo_desc,
gimp_drawable_get_buffer (GIMP_DRAWABLE (add_on)),
offset_x, offset_y, op,
feather,
feather_radius_x, feather_radius_y);
}
void
gimp_channel_select_alpha (GimpChannel *channel,
GimpDrawable *drawable,
GimpChannelOps op,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
GimpItem *item;
GimpChannel *add_on;
gint off_x, off_y;
const gchar *undo_desc = NULL;
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
item = GIMP_ITEM (channel);
if (gimp_drawable_has_alpha (drawable))
{
add_on = gimp_channel_new_from_alpha (gimp_item_get_image (item),
drawable, NULL, NULL);
}
else
{
/* no alpha is equivalent to completely opaque alpha,
* so simply select the whole layer's extents. --mitch
*/
add_on = gimp_channel_new_mask (gimp_item_get_image (item),
gimp_item_get_width (GIMP_ITEM (drawable)),
gimp_item_get_height (GIMP_ITEM (drawable)));
gimp_channel_all (add_on, FALSE);
}
switch (op)
{
case GIMP_CHANNEL_OP_ADD:
undo_desc = C_("undo-type", "Add Alpha to Selection");
break;
case GIMP_CHANNEL_OP_SUBTRACT:
undo_desc = C_("undo-type", "Subtract Alpha from Selection");
break;
case GIMP_CHANNEL_OP_REPLACE:
undo_desc = C_("undo-type", "Alpha to Selection");
break;
case GIMP_CHANNEL_OP_INTERSECT:
undo_desc = C_("undo-type", "Intersect Alpha with Selection");
break;
}
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
gimp_channel_select_channel (channel, undo_desc, add_on,
off_x, off_y,
op, feather,
feather_radius_x,
feather_radius_y);
g_object_unref (add_on);
}
void
gimp_channel_select_component (GimpChannel *channel,
GimpChannelType component,
GimpChannelOps op,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
GimpItem *item;
GimpChannel *add_on;
const gchar *desc;
gchar *undo_desc;
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
item = GIMP_ITEM (channel);
add_on = gimp_channel_new_from_component (gimp_item_get_image (item),
component, NULL, NULL);
if (feather)
gimp_channel_feather (add_on,
feather_radius_x,
feather_radius_y,
TRUE,
FALSE /* no undo */);
gimp_enum_get_value (GIMP_TYPE_CHANNEL_TYPE, component,
NULL, NULL, &desc, NULL);
undo_desc = g_strdup_printf (C_("undo-type", "%s Channel to Selection"), desc);
gimp_channel_select_channel (channel, undo_desc, add_on,
0, 0, op,
FALSE, 0.0, 0.0);
g_free (undo_desc);
g_object_unref (add_on);
}
void
gimp_channel_select_fuzzy (GimpChannel *channel,
GimpDrawable *drawable,
gboolean sample_merged,
gint x,
gint y,
gfloat threshold,
gboolean select_transparent,
GimpSelectCriterion select_criterion,
gboolean diagonal_neighbors,
GimpChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
GimpPickable *pickable;
GeglBuffer *add_on;
gint add_on_x = 0;
gint add_on_y = 0;
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
if (sample_merged)
pickable = GIMP_PICKABLE (gimp_item_get_image (GIMP_ITEM (drawable)));
else
pickable = GIMP_PICKABLE (drawable);
add_on = gimp_pickable_contiguous_region_by_seed (pickable,
antialias,
threshold,
select_transparent,
select_criterion,
diagonal_neighbors,
x, y);
if (! sample_merged)
gimp_item_get_offset (GIMP_ITEM (drawable), &add_on_x, &add_on_y);
gimp_channel_select_buffer (channel, C_("undo-type", "Fuzzy Select"),
add_on, add_on_x, add_on_y,
op,
feather,
feather_radius_x,
feather_radius_y);
g_object_unref (add_on);
}
void
gimp_channel_select_by_color (GimpChannel *channel,
GList *drawables,
gboolean sample_merged,
const GimpRGB *color,
gfloat threshold,
gboolean select_transparent,
GimpSelectCriterion select_criterion,
GimpChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
GimpPickable *pickable;
GeglBuffer *add_on;
GimpImage *image;
GimpImage *sel_image = NULL;
gint add_on_x = 0;
gint add_on_y = 0;
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
g_return_if_fail (drawables != NULL);
g_return_if_fail (color != NULL);
image = gimp_item_get_image (drawables->data);
if (sample_merged)
{
pickable = GIMP_PICKABLE (image);
}
else
{
if (g_list_length (drawables) == 1)
{
pickable = GIMP_PICKABLE (drawables->data);
}
else
{
sel_image = gimp_image_new_from_drawables (image->gimp, drawables, FALSE, FALSE);
gimp_container_remove (image->gimp->images, GIMP_OBJECT (sel_image));
pickable = GIMP_PICKABLE (sel_image);
gimp_pickable_flush (pickable);
}
}
add_on = gimp_pickable_contiguous_region_by_color (pickable,
antialias,
threshold,
select_transparent,
select_criterion,
color);
if (! sample_merged && ! sel_image)
gimp_item_get_offset (GIMP_ITEM (drawables->data), &add_on_x, &add_on_y);
gimp_channel_select_buffer (channel, C_("undo-type", "Select by Color"),
add_on, add_on_x, add_on_y,
op,
feather,
feather_radius_x,
feather_radius_y);
g_object_unref (add_on);
if (sel_image)
g_object_unref (sel_image);
}
void
gimp_channel_select_by_index (GimpChannel *channel,
GimpDrawable *drawable,
gint index,
GimpChannelOps op,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
GeglBuffer *add_on;
gint add_on_x = 0;
gint add_on_y = 0;
g_return_if_fail (GIMP_IS_CHANNEL (channel));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (channel)));
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (gimp_drawable_is_indexed (drawable));
add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
gimp_item_get_width (GIMP_ITEM (drawable)),
gimp_item_get_height (GIMP_ITEM (drawable))),
babl_format ("Y float"));
gimp_gegl_index_to_mask (gimp_drawable_get_buffer (drawable), NULL,
gimp_drawable_get_format_without_alpha (drawable),
add_on, NULL,
index);
gimp_item_get_offset (GIMP_ITEM (drawable), &add_on_x, &add_on_y);
gimp_channel_select_buffer (channel, C_("undo-type", "Select by Indexed Color"),
add_on, add_on_x, add_on_y,
op,
feather,
feather_radius_x,
feather_radius_y);
g_object_unref (add_on);
}