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/* The GIMP -- an 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <glib-object.h>
#include "libgimpcolor/gimpcolor.h"
#include "core-types.h"
#include "gimp.h"
#include "gimpchannel.h"
#include "gimpimage.h"
#include "gimpimage-qmask.h"
#include "gimpimage-undo.h"
#include "gimpimage-undo-push.h"
#include "gimplayer.h"
#include "gimplayer-floating-sel.h"
#include "gimpselection.h"
#include "gimp-intl.h"
/* public functions */
void
gimp_image_set_qmask_state (GimpImage *gimage,
gboolean qmask_state)
{
GimpChannel *selection;
GimpChannel *mask;
g_return_if_fail (GIMP_IS_IMAGE (gimage));
if (qmask_state == gimage->qmask_state)
return;
/* set image->qmask_state early so we can return early when
* being called recursively
*/
gimage->qmask_state = qmask_state ? TRUE : FALSE;
selection = gimp_image_get_mask (gimage);
mask = gimp_image_get_qmask (gimage);
if (qmask_state)
{
if (! mask)
{
gimp_image_undo_group_start (gimage, GIMP_UNDO_GROUP_IMAGE_QMASK,
_("Enable Quick Mask"));
if (gimp_channel_is_empty (selection))
{
/* if no selection */
GimpLayer *floating_sel = gimp_image_floating_sel (gimage);
if (floating_sel)
floating_sel_to_layer (floating_sel);
mask = gimp_channel_new (gimage,
gimage->width,
gimage->height,
GIMP_IMAGE_QMASK_NAME,
&gimage->qmask_color);
/* Clear the mask */
gimp_channel_clear (mask, NULL, FALSE);
}
else
{
/* if selection */
mask = GIMP_CHANNEL (gimp_item_duplicate (GIMP_ITEM (selection),
GIMP_TYPE_CHANNEL,
FALSE));
/* Clear the selection */
gimp_channel_clear (selection, NULL, TRUE);
gimp_channel_set_color (mask, &gimage->qmask_color, FALSE);
gimp_item_rename (GIMP_ITEM (mask), GIMP_IMAGE_QMASK_NAME);
}
if (gimage->qmask_inverted)
gimp_channel_invert (mask, FALSE);
gimp_image_add_channel (gimage, mask, 0);
gimp_image_undo_group_end (gimage);
}
}
else
{
if (mask)
{
GimpLayer *floating_sel = gimp_image_floating_sel (gimage);
gimp_image_undo_group_start (gimage, GIMP_UNDO_GROUP_IMAGE_QMASK,
_("Disable Quick Mask"));
if (gimage->qmask_inverted)
gimp_channel_invert (mask, TRUE);
if (floating_sel && floating_sel->fs.drawable == GIMP_DRAWABLE (mask))
floating_sel_anchor (floating_sel);
gimp_selection_load (gimp_image_get_mask (gimage), mask);
gimp_image_remove_channel (gimage, mask);
gimp_image_undo_group_end (gimage);
}
}
gimp_image_qmask_changed (gimage);
}
gboolean
gimp_image_get_qmask_state (const GimpImage *gimage)
{
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
return gimage->qmask_state;
}
void
gimp_image_set_qmask_color (GimpImage *gimage,
const GimpRGB *color)
{
GimpChannel *qmask;
g_return_if_fail (GIMP_IS_IMAGE (gimage));
g_return_if_fail (color != NULL);
gimage->qmask_color = *color;
qmask = gimp_image_get_qmask (gimage);
if (qmask)
gimp_channel_set_color (qmask, color, TRUE);
}
void
gimp_image_get_qmask_color (const GimpImage *gimage,
GimpRGB *color)
{
g_return_if_fail (GIMP_IS_IMAGE (gimage));
g_return_if_fail (color != NULL);
*color = gimage->qmask_color;
}
GimpChannel *
gimp_image_get_qmask (const GimpImage *gimage)
{
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
return gimp_image_get_channel_by_name (gimage, GIMP_IMAGE_QMASK_NAME);
}
void
gimp_image_qmask_invert (GimpImage *gimage)
{
g_return_if_fail (GIMP_IS_IMAGE (gimage));
if (gimage->qmask_state)
{
GimpChannel *qmask = gimp_image_get_qmask (gimage);
if (qmask)
gimp_channel_invert (qmask, TRUE);
}
gimage->qmask_inverted = ! gimage->qmask_inverted;
}
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