mirror of https://github.com/GNOME/gimp.git
173 lines
4.8 KiB
C
173 lines
4.8 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 "libgimpcolor/gimpcolor.h"
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#include "core-types.h"
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#include "gimp.h"
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#include "gimpchannel.h"
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#include "gimpimage.h"
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#include "gimpimage-qmask.h"
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#include "gimpimage-undo.h"
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#include "gimpimage-undo-push.h"
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#include "gimplayer.h"
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#include "gimplayer-floating-sel.h"
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#include "gimpselection.h"
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#include "gimp-intl.h"
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/* public functions */
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void
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gimp_image_set_qmask_state (GimpImage *gimage,
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gboolean qmask_state)
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{
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GimpChannel *selection;
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GimpChannel *mask;
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g_return_if_fail (GIMP_IS_IMAGE (gimage));
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if (qmask_state == gimage->qmask_state)
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return;
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/* set image->qmask_state early so we can return early when
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* being called recursively
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*/
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gimage->qmask_state = qmask_state ? TRUE : FALSE;
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selection = gimp_image_get_mask (gimage);
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mask = gimp_image_get_qmask (gimage);
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if (qmask_state)
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{
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if (! mask)
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{
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gimp_image_undo_group_start (gimage, GIMP_UNDO_GROUP_IMAGE_QMASK,
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_("Enable QuickMask"));
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if (gimp_channel_is_empty (selection))
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{
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/* if no selection */
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GimpLayer *floating_sel = gimp_image_floating_sel (gimage);
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if (floating_sel)
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floating_sel_to_layer (floating_sel);
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mask = gimp_channel_new (gimage,
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gimage->width,
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gimage->height,
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GIMP_IMAGE_QMASK_NAME,
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&gimage->qmask_color);
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/* Clear the mask */
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gimp_channel_clear (mask, NULL, FALSE);
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}
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else
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{
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/* if selection */
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mask = GIMP_CHANNEL (gimp_item_duplicate (GIMP_ITEM (selection),
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GIMP_TYPE_CHANNEL,
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FALSE));
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/* Clear the selection */
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gimp_channel_clear (selection, NULL, TRUE);
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gimp_channel_set_color (mask, &gimage->qmask_color, FALSE);
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gimp_item_rename (GIMP_ITEM (mask), GIMP_IMAGE_QMASK_NAME);
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}
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if (gimage->qmask_inverted)
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gimp_channel_invert (mask, FALSE);
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gimp_image_add_channel (gimage, mask, 0);
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gimp_image_undo_group_end (gimage);
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}
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}
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else
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{
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if (mask)
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{
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GimpLayer *floating_sel = gimp_image_floating_sel (gimage);
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gimp_image_undo_group_start (gimage, GIMP_UNDO_GROUP_IMAGE_QMASK,
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_("Disable QuickMask"));
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if (gimage->qmask_inverted)
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gimp_channel_invert (mask, TRUE);
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if (floating_sel && floating_sel->fs.drawable == GIMP_DRAWABLE (mask))
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floating_sel_anchor (floating_sel);
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gimp_selection_load (gimp_image_get_mask (gimage), mask);
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gimp_image_remove_channel (gimage, mask);
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gimp_image_undo_group_end (gimage);
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}
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}
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gimp_image_qmask_changed (gimage);
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}
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gboolean
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gimp_image_get_qmask_state (const GimpImage *gimage)
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{
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g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
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return gimage->qmask_state;
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}
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GimpChannel *
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gimp_image_get_qmask (const GimpImage *gimage)
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{
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g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
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return gimp_image_get_channel_by_name (gimage, GIMP_IMAGE_QMASK_NAME);
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}
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void
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gimp_image_qmask_invert (GimpImage *gimage)
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{
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g_return_if_fail (GIMP_IS_IMAGE (gimage));
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if (gimage->qmask_state)
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{
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GimpChannel *qmask = gimp_image_get_qmask (gimage);
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if (qmask)
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{
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gimp_channel_invert (qmask, TRUE);
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gimp_drawable_update (GIMP_DRAWABLE (qmask),
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0, 0,
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GIMP_ITEM (qmask)->width,
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GIMP_ITEM (qmask)->height);
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}
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}
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gimage->qmask_inverted = ! gimage->qmask_inverted;
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}
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