653 lines
24 KiB
C
653 lines
24 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <string.h>
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#include <cairo.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "libpikabase/pikabase.h"
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#include "libpikamath/pikamath.h"
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#include "core-types.h"
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#include "gegl/pika-gegl-apply-operation.h"
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#include "gegl/pika-gegl-loops.h"
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#include "gegl/pika-gegl-mask-combine.h"
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#include "pika.h"
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#include "pikachannel.h"
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#include "pikachannel-select.h"
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#include "pikachannel-combine.h"
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#include "pikacontainer.h"
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#include "pikaimage.h"
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#include "pikaimage-new.h"
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#include "pikapickable.h"
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#include "pikapickable-contiguous-region.h"
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#include "pikascanconvert.h"
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#include "vectors/pikastroke.h"
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#include "vectors/pikavectors.h"
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#include "pika-intl.h"
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/* basic selection functions */
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void
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pika_channel_select_rectangle (PikaChannel *channel,
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gint x,
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gint y,
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gint w,
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gint h,
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PikaChannelOps op,
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gboolean feather,
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gdouble feather_radius_x,
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gdouble feather_radius_y,
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gboolean push_undo)
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{
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g_return_if_fail (PIKA_IS_CHANNEL (channel));
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g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
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if (push_undo)
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pika_channel_push_undo (channel, C_("undo-type", "Rectangle Select"));
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/* if feathering for rect, make a new mask with the
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* rectangle and feather that with the old mask
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*/
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if (feather)
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{
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PikaItem *item = PIKA_ITEM (channel);
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GeglBuffer *add_on;
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add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
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pika_item_get_width (item),
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pika_item_get_height (item)),
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babl_format ("Y float"));
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pika_gegl_mask_combine_rect (add_on, PIKA_CHANNEL_OP_REPLACE, x, y, w, h);
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pika_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
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feather_radius_x,
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feather_radius_y,
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TRUE);
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pika_channel_combine_buffer (channel, add_on, op, 0, 0);
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g_object_unref (add_on);
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}
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else
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{
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pika_channel_combine_rect (channel, op, x, y, w, h);
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}
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}
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void
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pika_channel_select_ellipse (PikaChannel *channel,
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gint x,
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gint y,
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gint w,
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gint h,
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PikaChannelOps op,
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gboolean antialias,
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gboolean feather,
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gdouble feather_radius_x,
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gdouble feather_radius_y,
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gboolean push_undo)
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{
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g_return_if_fail (PIKA_IS_CHANNEL (channel));
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g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
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if (push_undo)
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pika_channel_push_undo (channel, C_("undo-type", "Ellipse Select"));
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/* if feathering for rect, make a new mask with the
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* rectangle and feather that with the old mask
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*/
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if (feather)
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{
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PikaItem *item = PIKA_ITEM (channel);
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GeglBuffer *add_on;
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add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
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pika_item_get_width (item),
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pika_item_get_height (item)),
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babl_format ("Y float"));
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pika_gegl_mask_combine_ellipse (add_on, PIKA_CHANNEL_OP_REPLACE,
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x, y, w, h, antialias);
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pika_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
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feather_radius_x,
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feather_radius_y,
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TRUE);
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pika_channel_combine_buffer (channel, add_on, op, 0, 0);
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g_object_unref (add_on);
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}
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else
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{
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pika_channel_combine_ellipse (channel, op, x, y, w, h, antialias);
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}
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}
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void
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pika_channel_select_round_rect (PikaChannel *channel,
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gint x,
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gint y,
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gint w,
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gint h,
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gdouble corner_radius_x,
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gdouble corner_radius_y,
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PikaChannelOps op,
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gboolean antialias,
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gboolean feather,
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gdouble feather_radius_x,
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gdouble feather_radius_y,
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gboolean push_undo)
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{
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g_return_if_fail (PIKA_IS_CHANNEL (channel));
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g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
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if (push_undo)
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pika_channel_push_undo (channel, C_("undo-type", "Rounded Rectangle Select"));
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/* if feathering for rect, make a new mask with the
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* rectangle and feather that with the old mask
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*/
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if (feather)
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{
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PikaItem *item = PIKA_ITEM (channel);
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GeglBuffer *add_on;
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add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
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pika_item_get_width (item),
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pika_item_get_height (item)),
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babl_format ("Y float"));
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pika_gegl_mask_combine_ellipse_rect (add_on, PIKA_CHANNEL_OP_REPLACE,
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x, y, w, h,
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corner_radius_x, corner_radius_y,
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antialias);
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pika_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
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feather_radius_x,
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feather_radius_y,
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TRUE);
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pika_channel_combine_buffer (channel, add_on, op, 0, 0);
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g_object_unref (add_on);
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}
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else
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{
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pika_channel_combine_ellipse_rect (channel, op, x, y, w, h,
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corner_radius_x, corner_radius_y,
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antialias);
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}
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}
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/* select by PikaScanConvert functions */
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void
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pika_channel_select_scan_convert (PikaChannel *channel,
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const gchar *undo_desc,
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PikaScanConvert *scan_convert,
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gint offset_x,
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gint offset_y,
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PikaChannelOps op,
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gboolean antialias,
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gboolean feather,
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gdouble feather_radius_x,
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gdouble feather_radius_y,
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gboolean push_undo)
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{
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PikaItem *item;
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GeglBuffer *add_on;
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g_return_if_fail (PIKA_IS_CHANNEL (channel));
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g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
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g_return_if_fail (undo_desc != NULL);
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g_return_if_fail (scan_convert != NULL);
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if (push_undo)
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pika_channel_push_undo (channel, undo_desc);
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item = PIKA_ITEM (channel);
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add_on = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
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pika_item_get_width (item),
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pika_item_get_height (item)),
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babl_format ("Y float"));
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pika_scan_convert_render (scan_convert, add_on,
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offset_x, offset_y, antialias);
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if (feather)
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pika_gegl_apply_feather (add_on, NULL, NULL, add_on, NULL,
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feather_radius_x,
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feather_radius_y,
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TRUE);
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pika_channel_combine_buffer (channel, add_on, op, 0, 0);
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g_object_unref (add_on);
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}
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void
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pika_channel_select_polygon (PikaChannel *channel,
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const gchar *undo_desc,
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gint n_points,
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const PikaVector2 *points,
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PikaChannelOps op,
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gboolean antialias,
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gboolean feather,
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gdouble feather_radius_x,
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gdouble feather_radius_y,
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gboolean push_undo)
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{
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PikaScanConvert *scan_convert;
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g_return_if_fail (PIKA_IS_CHANNEL (channel));
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g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
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g_return_if_fail (undo_desc != NULL);
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scan_convert = pika_scan_convert_new ();
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pika_scan_convert_add_polyline (scan_convert, n_points, points, TRUE);
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pika_channel_select_scan_convert (channel, undo_desc, scan_convert, 0, 0,
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op, antialias, feather,
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feather_radius_x, feather_radius_y,
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push_undo);
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pika_scan_convert_free (scan_convert);
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}
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void
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pika_channel_select_vectors (PikaChannel *channel,
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const gchar *undo_desc,
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PikaVectors *vectors,
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PikaChannelOps op,
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gboolean antialias,
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gboolean feather,
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gdouble feather_radius_x,
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gdouble feather_radius_y,
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gboolean push_undo)
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{
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const PikaBezierDesc *bezier;
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g_return_if_fail (PIKA_IS_CHANNEL (channel));
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g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
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g_return_if_fail (undo_desc != NULL);
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g_return_if_fail (PIKA_IS_VECTORS (vectors));
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bezier = pika_vectors_get_bezier (vectors);
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if (bezier && bezier->num_data > 4)
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{
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PikaScanConvert *scan_convert;
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scan_convert = pika_scan_convert_new ();
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pika_scan_convert_add_bezier (scan_convert, bezier);
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pika_channel_select_scan_convert (channel, undo_desc, scan_convert, 0, 0,
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op, antialias, feather,
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feather_radius_x, feather_radius_y,
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push_undo);
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pika_scan_convert_free (scan_convert);
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}
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}
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/* select by PikaChannel functions */
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void
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pika_channel_select_buffer (PikaChannel *channel,
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const gchar *undo_desc,
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GeglBuffer *add_on,
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gint offset_x,
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gint offset_y,
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PikaChannelOps op,
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gboolean feather,
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gdouble feather_radius_x,
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gdouble feather_radius_y)
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{
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g_return_if_fail (PIKA_IS_CHANNEL (channel));
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g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
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g_return_if_fail (undo_desc != NULL);
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g_return_if_fail (GEGL_IS_BUFFER (add_on));
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pika_channel_push_undo (channel, undo_desc);
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if (feather)
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{
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PikaItem *item = PIKA_ITEM (channel);
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GeglBuffer *add_on2;
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add_on2 = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
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pika_item_get_width (item),
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pika_item_get_height (item)),
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babl_format ("Y float"));
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pika_gegl_mask_combine_buffer (add_on2, add_on,
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PIKA_CHANNEL_OP_REPLACE,
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offset_x, offset_y);
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pika_gegl_apply_feather (add_on2, NULL, NULL, add_on2, NULL,
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feather_radius_x,
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feather_radius_y,
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TRUE);
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pika_channel_combine_buffer (channel, add_on2, op, 0, 0);
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g_object_unref (add_on2);
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}
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else
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{
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pika_channel_combine_buffer (channel, add_on, op, offset_x, offset_y);
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}
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}
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void
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pika_channel_select_channel (PikaChannel *channel,
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const gchar *undo_desc,
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PikaChannel *add_on,
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gint offset_x,
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gint offset_y,
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PikaChannelOps op,
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gboolean feather,
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gdouble feather_radius_x,
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gdouble feather_radius_y)
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{
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g_return_if_fail (PIKA_IS_CHANNEL (channel));
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g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
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g_return_if_fail (undo_desc != NULL);
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g_return_if_fail (PIKA_IS_CHANNEL (add_on));
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pika_channel_select_buffer (channel, undo_desc,
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pika_drawable_get_buffer (PIKA_DRAWABLE (add_on)),
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offset_x, offset_y, op,
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feather,
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feather_radius_x, feather_radius_y);
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}
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void
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pika_channel_select_alpha (PikaChannel *channel,
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PikaDrawable *drawable,
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PikaChannelOps op,
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gboolean feather,
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gdouble feather_radius_x,
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gdouble feather_radius_y)
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{
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PikaItem *item;
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PikaChannel *add_on;
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gint off_x, off_y;
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const gchar *undo_desc = NULL;
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g_return_if_fail (PIKA_IS_CHANNEL (channel));
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g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
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g_return_if_fail (PIKA_IS_DRAWABLE (drawable));
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item = PIKA_ITEM (channel);
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if (pika_drawable_has_alpha (drawable))
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{
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add_on = pika_channel_new_from_alpha (pika_item_get_image (item),
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drawable, NULL, NULL);
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}
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else
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{
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/* no alpha is equivalent to completely opaque alpha,
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* so simply select the whole layer's extents. --mitch
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*/
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add_on = pika_channel_new_mask (pika_item_get_image (item),
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pika_item_get_width (PIKA_ITEM (drawable)),
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pika_item_get_height (PIKA_ITEM (drawable)));
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pika_channel_all (add_on, FALSE);
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}
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switch (op)
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{
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case PIKA_CHANNEL_OP_ADD:
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undo_desc = C_("undo-type", "Add Alpha to Selection");
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break;
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case PIKA_CHANNEL_OP_SUBTRACT:
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undo_desc = C_("undo-type", "Subtract Alpha from Selection");
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break;
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case PIKA_CHANNEL_OP_REPLACE:
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undo_desc = C_("undo-type", "Alpha to Selection");
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break;
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case PIKA_CHANNEL_OP_INTERSECT:
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undo_desc = C_("undo-type", "Intersect Alpha with Selection");
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break;
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}
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pika_item_get_offset (PIKA_ITEM (drawable), &off_x, &off_y);
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pika_channel_select_channel (channel, undo_desc, add_on,
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off_x, off_y,
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op, feather,
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feather_radius_x,
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feather_radius_y);
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g_object_unref (add_on);
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}
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void
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pika_channel_select_component (PikaChannel *channel,
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PikaChannelType component,
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PikaChannelOps op,
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gboolean feather,
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gdouble feather_radius_x,
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gdouble feather_radius_y)
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{
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PikaItem *item;
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PikaChannel *add_on;
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const gchar *desc;
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gchar *undo_desc;
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g_return_if_fail (PIKA_IS_CHANNEL (channel));
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g_return_if_fail (pika_item_is_attached (PIKA_ITEM (channel)));
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item = PIKA_ITEM (channel);
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add_on = pika_channel_new_from_component (pika_item_get_image (item),
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component, NULL, NULL);
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if (feather)
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pika_channel_feather (add_on,
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feather_radius_x,
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feather_radius_y,
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TRUE,
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FALSE /* no undo */);
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pika_enum_get_value (PIKA_TYPE_CHANNEL_TYPE, component,
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NULL, NULL, &desc, NULL);
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undo_desc = g_strdup_printf (C_("undo-type", "%s Channel to Selection"), desc);
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pika_channel_select_channel (channel, undo_desc, add_on,
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0, 0, op,
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FALSE, 0.0, 0.0);
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g_free (undo_desc);
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g_object_unref (add_on);
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}
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void
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pika_channel_select_fuzzy (PikaChannel *channel,
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PikaDrawable *drawable,
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gboolean sample_merged,
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gint x,
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gint y,
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gfloat threshold,
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gboolean select_transparent,
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PikaSelectCriterion select_criterion,
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gboolean diagonal_neighbors,
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PikaChannelOps op,
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gboolean antialias,
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gboolean feather,
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gdouble feather_radius_x,
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gdouble feather_radius_y)
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{
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PikaPickable *pickable;
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GeglBuffer *add_on;
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gint add_on_x = 0;
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gint add_on_y = 0;
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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);
|
|
}
|
