mirror of https://github.com/GNOME/gimp.git
284 lines
9.5 KiB
C
284 lines
9.5 KiB
C
/* The GIMP -- an image manipulation program
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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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <glib-object.h>
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#include "core-types.h"
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#include "gimpchannel.h"
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#include "gimpimage.h"
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#include "gimpimage-contiguous-region.h"
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#include "gimpimage-mask.h"
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#include "gimpimage-mask-select.h"
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#include "gimpscanconvert.h"
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void
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gimp_image_mask_select_rectangle (GimpImage *gimage,
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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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ChannelOps 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 (GIMP_IS_IMAGE (gimage));
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/* if applicable, replace the current selection */
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if (op == CHANNEL_OP_REPLACE)
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gimp_image_mask_clear (gimage);
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else
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gimp_image_mask_undo (gimage);
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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 || op == CHANNEL_OP_INTERSECT)
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{
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GimpChannel *mask;
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mask = gimp_channel_new_mask (gimage, gimage->width, gimage->height);
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gimp_channel_combine_rect (mask, CHANNEL_OP_ADD, x, y, w, h);
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if (feather)
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gimp_channel_feather (mask,
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feather_radius_x,
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feather_radius_y,
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FALSE /* no undo */);
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gimp_channel_combine_mask (gimp_image_get_mask (gimage), mask, op, 0, 0);
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g_object_unref (G_OBJECT (mask));
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}
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else
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{
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gimp_channel_combine_rect (gimp_image_get_mask (gimage), op, x, y, w, h);
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}
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}
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void
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gimp_image_mask_select_ellipse (GimpImage *gimage,
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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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ChannelOps 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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g_return_if_fail (GIMP_IS_IMAGE (gimage));
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/* if applicable, replace the current selection */
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if (op == CHANNEL_OP_REPLACE)
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gimp_image_mask_clear (gimage);
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else
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gimp_image_mask_undo (gimage);
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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 || op == CHANNEL_OP_INTERSECT)
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{
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GimpChannel *mask;
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mask = gimp_channel_new_mask (gimage, gimage->width, gimage->height);
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gimp_channel_combine_ellipse (mask, CHANNEL_OP_ADD, x, y, w, h, antialias);
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if (feather)
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gimp_channel_feather (mask,
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feather_radius_x,
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feather_radius_y,
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FALSE /* no undo */);
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gimp_channel_combine_mask (gimp_image_get_mask (gimage), mask, op, 0, 0);
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g_object_unref (G_OBJECT (mask));
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}
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else
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{
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gimp_channel_combine_ellipse (gimp_image_get_mask (gimage), op,
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x, y, w, h, antialias);
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}
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}
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void
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gimp_image_mask_select_polygon (GimpImage *gimage,
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gint n_points,
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GimpVector2 *points,
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ChannelOps 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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GimpScanConvert *scan_convert;
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GimpChannel *mask;
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g_return_if_fail (GIMP_IS_IMAGE (gimage));
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/* if applicable, replace the current selection
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* or insure that a floating selection is anchored down...
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*/
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if (op == CHANNEL_OP_REPLACE)
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gimp_image_mask_clear (gimage);
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else
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gimp_image_mask_undo (gimage);
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#define SUPERSAMPLE 3
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scan_convert = gimp_scan_convert_new (gimage->width,
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gimage->height,
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antialias ? SUPERSAMPLE : 1);
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gimp_scan_convert_add_points (scan_convert, n_points, points);
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mask = gimp_scan_convert_to_channel (scan_convert, gimage);
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gimp_scan_convert_free (scan_convert);
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#undef SUPERSAMPLE
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if (mask)
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{
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if (feather)
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gimp_channel_feather (mask,
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feather_radius_x,
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feather_radius_y,
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FALSE /* no undo */);
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gimp_channel_combine_mask (gimp_image_get_mask (gimage), mask, op, 0, 0);
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g_object_unref (G_OBJECT (mask));
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}
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}
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void
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gimp_image_mask_select_channel (GimpImage *gimage,
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GimpDrawable *drawable,
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gboolean sample_merged,
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GimpChannel *channel,
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ChannelOps 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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gint off_x, off_y;
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g_return_if_fail (GIMP_IS_IMAGE (gimage));
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g_return_if_fail ((! drawable && ! sample_merged) || GIMP_IS_DRAWABLE (drawable));
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g_return_if_fail (GIMP_IS_CHANNEL (channel));
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/* if applicable, replace the current selection */
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if (op == CHANNEL_OP_REPLACE)
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gimp_image_mask_clear (gimage);
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else
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gimp_image_mask_undo (gimage);
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if (sample_merged)
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{
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off_x = off_y = 0;
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}
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else
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{
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gimp_drawable_offsets (drawable, &off_x, &off_y);
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}
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if (feather)
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gimp_channel_feather (channel,
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feather_radius_x,
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feather_radius_y,
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FALSE /* no undo */);
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gimp_channel_combine_mask (gimp_image_get_mask (gimage), channel,
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op, off_x, off_y);
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}
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void
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gimp_image_mask_select_fuzzy (GimpImage *gimage,
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GimpDrawable *drawable,
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gboolean sample_merged,
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gint x,
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gint y,
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gint threshold,
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ChannelOps 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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GimpChannel *mask;
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g_return_if_fail (GIMP_IS_IMAGE (gimage));
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g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
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mask = gimp_image_contiguous_region_by_seed (gimage, drawable,
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sample_merged,
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antialias,
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threshold,
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x, y);
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gimp_image_mask_select_channel (gimage,
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drawable,
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sample_merged,
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mask,
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op,
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feather,
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feather_radius_x,
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feather_radius_y);
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g_object_unref (G_OBJECT (mask));
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}
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void
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gimp_image_mask_select_by_color (GimpImage *gimage,
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GimpDrawable *drawable,
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gboolean sample_merged,
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const GimpRGB *color,
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gint threshold,
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ChannelOps 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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GimpChannel *mask;
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g_return_if_fail (GIMP_IS_IMAGE (gimage));
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g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
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g_return_if_fail (color != NULL);
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mask = gimp_image_contiguous_region_by_color (gimage, drawable,
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sample_merged,
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antialias,
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threshold,
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color);
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gimp_image_mask_select_channel (gimage,
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drawable,
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sample_merged,
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mask,
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op,
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feather,
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feather_radius_x,
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feather_radius_y);
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g_object_unref (G_OBJECT (mask));
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}
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