/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* 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 .
*/
#include "config.h"
#include
#include
#include
#include
#include "libpikabase/pikabase.h"
#include "libpikamath/pikamath.h"
#include "core-types.h"
#include "gegl/pika-gegl-apply-operation.h"
#include "gegl/pika-gegl-loops.h"
#include "gegl/pika-gegl-mask-combine.h"
#include "pika.h"
#include "pikachannel.h"
#include "pikachannel-select.h"
#include "pikachannel-combine.h"
#include "pikacontainer.h"
#include "pikaimage.h"
#include "pikaimage-new.h"
#include "pikapickable.h"
#include "pikapickable-contiguous-region.h"
#include "pikascanconvert.h"
#include "vectors/pikastroke.h"
#include "vectors/pikavectors.h"
#include "pika-intl.h"
/* basic selection functions */
void
pika_channel_select_rectangle (PikaChannel *channel,
gint x,
gint y,
gint w,
gint h,
PikaChannelOps op,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y,
gboolean push_undo)
{
g_return_if_fail (PIKA_IS_CHANNEL (channel));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
if (push_undo)
pika_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)
{
PikaItem *item = PIKA_ITEM (channel);
GeglBuffer *add_on;
add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
pika_item_get_width (item),
pika_item_get_height (item)),
babl_format ("Y float"));
pika_gegl_mask_combine_rect (add_on, PIKA_CHANNEL_OP_REPLACE, x, y, w, h);
pika_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
feather_radius_x,
feather_radius_y,
TRUE);
pika_channel_combine_buffer (channel, add_on, op, 0, 0);
g_object_unref (add_on);
}
else
{
pika_channel_combine_rect (channel, op, x, y, w, h);
}
}
void
pika_channel_select_ellipse (PikaChannel *channel,
gint x,
gint y,
gint w,
gint h,
PikaChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y,
gboolean push_undo)
{
g_return_if_fail (PIKA_IS_CHANNEL (channel));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
if (push_undo)
pika_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)
{
PikaItem *item = PIKA_ITEM (channel);
GeglBuffer *add_on;
add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
pika_item_get_width (item),
pika_item_get_height (item)),
babl_format ("Y float"));
pika_gegl_mask_combine_ellipse (add_on, PIKA_CHANNEL_OP_REPLACE,
x, y, w, h, antialias);
pika_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
feather_radius_x,
feather_radius_y,
TRUE);
pika_channel_combine_buffer (channel, add_on, op, 0, 0);
g_object_unref (add_on);
}
else
{
pika_channel_combine_ellipse (channel, op, x, y, w, h, antialias);
}
}
void
pika_channel_select_round_rect (PikaChannel *channel,
gint x,
gint y,
gint w,
gint h,
gdouble corner_radius_x,
gdouble corner_radius_y,
PikaChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y,
gboolean push_undo)
{
g_return_if_fail (PIKA_IS_CHANNEL (channel));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
if (push_undo)
pika_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)
{
PikaItem *item = PIKA_ITEM (channel);
GeglBuffer *add_on;
add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
pika_item_get_width (item),
pika_item_get_height (item)),
babl_format ("Y float"));
pika_gegl_mask_combine_ellipse_rect (add_on, PIKA_CHANNEL_OP_REPLACE,
x, y, w, h,
corner_radius_x, corner_radius_y,
antialias);
pika_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
feather_radius_x,
feather_radius_y,
TRUE);
pika_channel_combine_buffer (channel, add_on, op, 0, 0);
g_object_unref (add_on);
}
else
{
pika_channel_combine_ellipse_rect (channel, op, x, y, w, h,
corner_radius_x, corner_radius_y,
antialias);
}
}
/* select by PikaScanConvert functions */
void
pika_channel_select_scan_convert (PikaChannel *channel,
const gchar *undo_desc,
PikaScanConvert *scan_convert,
gint offset_x,
gint offset_y,
PikaChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y,
gboolean push_undo)
{
PikaItem *item;
GeglBuffer *add_on;
g_return_if_fail (PIKA_IS_CHANNEL (channel));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
g_return_if_fail (undo_desc != NULL);
g_return_if_fail (scan_convert != NULL);
if (push_undo)
pika_channel_push_undo (channel, undo_desc);
item = PIKA_ITEM (channel);
add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
pika_item_get_width (item),
pika_item_get_height (item)),
babl_format ("Y float"));
pika_scan_convert_render (scan_convert, add_on,
offset_x, offset_y, antialias);
if (feather)
pika_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
feather_radius_x,
feather_radius_y,
TRUE);
pika_channel_combine_buffer (channel, add_on, op, 0, 0);
g_object_unref (add_on);
}
void
pika_channel_select_polygon (PikaChannel *channel,
const gchar *undo_desc,
gint n_points,
const PikaVector2 *points,
PikaChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y,
gboolean push_undo)
{
PikaScanConvert *scan_convert;
g_return_if_fail (PIKA_IS_CHANNEL (channel));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
g_return_if_fail (undo_desc != NULL);
scan_convert = pika_scan_convert_new ();
pika_scan_convert_add_polyline (scan_convert, n_points, points, TRUE);
pika_channel_select_scan_convert (channel, undo_desc, scan_convert, 0, 0,
op, antialias, feather,
feather_radius_x, feather_radius_y,
push_undo);
pika_scan_convert_free (scan_convert);
}
void
pika_channel_select_vectors (PikaChannel *channel,
const gchar *undo_desc,
PikaVectors *vectors,
PikaChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y,
gboolean push_undo)
{
const PikaBezierDesc *bezier;
g_return_if_fail (PIKA_IS_CHANNEL (channel));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
g_return_if_fail (undo_desc != NULL);
g_return_if_fail (PIKA_IS_VECTORS (vectors));
bezier = pika_vectors_get_bezier (vectors);
if (bezier && bezier->num_data > 4)
{
PikaScanConvert *scan_convert;
scan_convert = pika_scan_convert_new ();
pika_scan_convert_add_bezier (scan_convert, bezier);
pika_channel_select_scan_convert (channel, undo_desc, scan_convert, 0, 0,
op, antialias, feather,
feather_radius_x, feather_radius_y,
push_undo);
pika_scan_convert_free (scan_convert);
}
}
/* select by PikaChannel functions */
void
pika_channel_select_buffer (PikaChannel *channel,
const gchar *undo_desc,
GeglBuffer *add_on,
gint offset_x,
gint offset_y,
PikaChannelOps op,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
g_return_if_fail (PIKA_IS_CHANNEL (channel));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
g_return_if_fail (undo_desc != NULL);
g_return_if_fail (GEGL_IS_BUFFER (add_on));
pika_channel_push_undo (channel, undo_desc);
if (feather)
{
PikaItem *item = PIKA_ITEM (channel);
GeglBuffer *add_on2;
add_on2 = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
pika_item_get_width (item),
pika_item_get_height (item)),
babl_format ("Y float"));
pika_gegl_mask_combine_buffer (add_on2, add_on,
PIKA_CHANNEL_OP_REPLACE,
offset_x, offset_y);
pika_gegl_apply_feather (add_on2, NULL, NULL, add_on2, NULL,
feather_radius_x,
feather_radius_y,
TRUE);
pika_channel_combine_buffer (channel, add_on2, op, 0, 0);
g_object_unref (add_on2);
}
else
{
pika_channel_combine_buffer (channel, add_on, op, offset_x, offset_y);
}
}
void
pika_channel_select_channel (PikaChannel *channel,
const gchar *undo_desc,
PikaChannel *add_on,
gint offset_x,
gint offset_y,
PikaChannelOps op,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
g_return_if_fail (PIKA_IS_CHANNEL (channel));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
g_return_if_fail (undo_desc != NULL);
g_return_if_fail (PIKA_IS_CHANNEL (add_on));
pika_channel_select_buffer (channel, undo_desc,
pika_drawable_get_buffer (PIKA_DRAWABLE (add_on)),
offset_x, offset_y, op,
feather,
feather_radius_x, feather_radius_y);
}
void
pika_channel_select_alpha (PikaChannel *channel,
PikaDrawable *drawable,
PikaChannelOps op,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
PikaItem *item;
PikaChannel *add_on;
gint off_x, off_y;
const gchar *undo_desc = NULL;
g_return_if_fail (PIKA_IS_CHANNEL (channel));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
g_return_if_fail (PIKA_IS_DRAWABLE (drawable));
item = PIKA_ITEM (channel);
if (pika_drawable_has_alpha (drawable))
{
add_on = pika_channel_new_from_alpha (pika_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 = pika_channel_new_mask (pika_item_get_image (item),
pika_item_get_width (PIKA_ITEM (drawable)),
pika_item_get_height (PIKA_ITEM (drawable)));
pika_channel_all (add_on, FALSE);
}
switch (op)
{
case PIKA_CHANNEL_OP_ADD:
undo_desc = C_("undo-type", "Add Alpha to Selection");
break;
case PIKA_CHANNEL_OP_SUBTRACT:
undo_desc = C_("undo-type", "Subtract Alpha from Selection");
break;
case PIKA_CHANNEL_OP_REPLACE:
undo_desc = C_("undo-type", "Alpha to Selection");
break;
case PIKA_CHANNEL_OP_INTERSECT:
undo_desc = C_("undo-type", "Intersect Alpha with Selection");
break;
}
pika_item_get_offset (PIKA_ITEM (drawable), &off_x, &off_y);
pika_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
pika_channel_select_component (PikaChannel *channel,
PikaChannelType component,
PikaChannelOps op,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
PikaItem *item;
PikaChannel *add_on;
const gchar *desc;
gchar *undo_desc;
g_return_if_fail (PIKA_IS_CHANNEL (channel));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
item = PIKA_ITEM (channel);
add_on = pika_channel_new_from_component (pika_item_get_image (item),
component, NULL, NULL);
if (feather)
pika_channel_feather (add_on,
feather_radius_x,
feather_radius_y,
TRUE,
FALSE /* no undo */);
pika_enum_get_value (PIKA_TYPE_CHANNEL_TYPE, component,
NULL, NULL, &desc, NULL);
undo_desc = g_strdup_printf (C_("undo-type", "%s Channel to Selection"), desc);
pika_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
pika_channel_select_fuzzy (PikaChannel *channel,
PikaDrawable *drawable,
gboolean sample_merged,
gint x,
gint y,
gfloat threshold,
gboolean select_transparent,
PikaSelectCriterion select_criterion,
gboolean diagonal_neighbors,
PikaChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
PikaPickable *pickable;
GeglBuffer *add_on;
gint add_on_x = 0;
gint add_on_y = 0;
g_return_if_fail (PIKA_IS_CHANNEL (channel));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
g_return_if_fail (PIKA_IS_DRAWABLE (drawable));
if (sample_merged)
pickable = PIKA_PICKABLE (pika_item_get_image (PIKA_ITEM (drawable)));
else
pickable = PIKA_PICKABLE (drawable);
add_on = pika_pickable_contiguous_region_by_seed (pickable,
antialias,
threshold,
select_transparent,
select_criterion,
diagonal_neighbors,
x, y);
if (! sample_merged)
pika_item_get_offset (PIKA_ITEM (drawable), &add_on_x, &add_on_y);
pika_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
pika_channel_select_by_color (PikaChannel *channel,
GList *drawables,
gboolean sample_merged,
const PikaRGB *color,
gfloat threshold,
gboolean select_transparent,
PikaSelectCriterion select_criterion,
PikaChannelOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius_x,
gdouble feather_radius_y)
{
PikaPickable *pickable;
GeglBuffer *add_on;
PikaImage *image;
PikaImage *sel_image = NULL;
gint add_on_x = 0;
gint add_on_y = 0;
g_return_if_fail (PIKA_IS_CHANNEL (channel));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
g_return_if_fail (drawables != NULL);
g_return_if_fail (color != NULL);
image = pika_item_get_image (drawables->data);
if (sample_merged)
{
pickable = PIKA_PICKABLE (image);
}
else
{
if (g_list_length (drawables) == 1)
{
pickable = PIKA_PICKABLE (drawables->data);
}
else
{
sel_image = pika_image_new_from_drawables (image->pika, drawables, FALSE, FALSE);
pika_container_remove (image->pika->images, PIKA_OBJECT (sel_image));
pickable = PIKA_PICKABLE (sel_image);
pika_pickable_flush (pickable);
}
}
add_on = pika_pickable_contiguous_region_by_color (pickable,
antialias,
threshold,
select_transparent,
select_criterion,
color);
if (! sample_merged && ! sel_image)
pika_item_get_offset (PIKA_ITEM (drawables->data), &add_on_x, &add_on_y);
pika_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
pika_channel_select_by_index (PikaChannel *channel,
PikaDrawable *drawable,
gint index,
PikaChannelOps 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 (PIKA_IS_CHANNEL (channel));
g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
g_return_if_fail (PIKA_IS_DRAWABLE (drawable));
g_return_if_fail (pika_drawable_is_indexed (drawable));
add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
pika_item_get_width (PIKA_ITEM (drawable)),
pika_item_get_height (PIKA_ITEM (drawable))),
babl_format ("Y float"));
pika_gegl_index_to_mask (pika_drawable_get_buffer (drawable), NULL,
pika_drawable_get_format_without_alpha (drawable),
add_on, NULL,
index);
pika_item_get_offset (PIKA_ITEM (drawable), &add_on_x, &add_on_y);
pika_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);
}