mirror of https://github.com/GNOME/gimp.git
351 lines
9.9 KiB
C
351 lines
9.9 KiB
C
/* 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 <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <glib-object.h>
|
|
|
|
#include "libgimpmath/gimpmath.h"
|
|
|
|
#include "core-types.h"
|
|
|
|
#include "gimpimage.h"
|
|
#include "gimpimage-undo-push.h"
|
|
#include "gimplayer.h"
|
|
#include "gimplayermask.h"
|
|
#include "gimpmarshal.h"
|
|
|
|
#include "gimp-intl.h"
|
|
|
|
|
|
enum
|
|
{
|
|
APPLY_CHANGED,
|
|
EDIT_CHANGED,
|
|
SHOW_CHANGED,
|
|
LAST_SIGNAL
|
|
};
|
|
|
|
|
|
static void gimp_layer_mask_class_init (GimpLayerMaskClass *klass);
|
|
static void gimp_layer_mask_init (GimpLayerMask *layer_mask);
|
|
|
|
static gboolean gimp_layer_mask_is_attached (GimpItem *item);
|
|
static GimpItem * gimp_layer_mask_duplicate (GimpItem *item,
|
|
GType new_type,
|
|
gboolean add_alpha);
|
|
static gboolean gimp_layer_mask_rename (GimpItem *item,
|
|
const gchar *new_name,
|
|
const gchar *undo_desc);
|
|
|
|
|
|
static guint layer_mask_signals[LAST_SIGNAL] = { 0 };
|
|
|
|
static GimpChannelClass *parent_class = NULL;
|
|
|
|
|
|
GType
|
|
gimp_layer_mask_get_type (void)
|
|
{
|
|
static GType layer_mask_type = 0;
|
|
|
|
if (! layer_mask_type)
|
|
{
|
|
static const GTypeInfo layer_mask_info =
|
|
{
|
|
sizeof (GimpLayerMaskClass),
|
|
(GBaseInitFunc) NULL,
|
|
(GBaseFinalizeFunc) NULL,
|
|
(GClassInitFunc) gimp_layer_mask_class_init,
|
|
NULL, /* class_finalize */
|
|
NULL, /* class_data */
|
|
sizeof (GimpLayerMask),
|
|
0, /* n_preallocs */
|
|
(GInstanceInitFunc) gimp_layer_mask_init,
|
|
};
|
|
|
|
layer_mask_type = g_type_register_static (GIMP_TYPE_CHANNEL,
|
|
"GimpLayerMask",
|
|
&layer_mask_info, 0);
|
|
}
|
|
|
|
return layer_mask_type;
|
|
}
|
|
|
|
static void
|
|
gimp_layer_mask_class_init (GimpLayerMaskClass *klass)
|
|
{
|
|
GimpViewableClass *viewable_class = GIMP_VIEWABLE_CLASS (klass);
|
|
GimpItemClass *item_class = GIMP_ITEM_CLASS (klass);
|
|
|
|
parent_class = g_type_class_peek_parent (klass);
|
|
|
|
layer_mask_signals[APPLY_CHANGED] =
|
|
g_signal_new ("apply-changed",
|
|
G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_FIRST,
|
|
G_STRUCT_OFFSET (GimpLayerMaskClass, apply_changed),
|
|
NULL, NULL,
|
|
gimp_marshal_VOID__VOID,
|
|
G_TYPE_NONE, 0);
|
|
|
|
layer_mask_signals[EDIT_CHANGED] =
|
|
g_signal_new ("edit-changed",
|
|
G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_FIRST,
|
|
G_STRUCT_OFFSET (GimpLayerMaskClass, edit_changed),
|
|
NULL, NULL,
|
|
gimp_marshal_VOID__VOID,
|
|
G_TYPE_NONE, 0);
|
|
|
|
layer_mask_signals[SHOW_CHANGED] =
|
|
g_signal_new ("show-changed",
|
|
G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_FIRST,
|
|
G_STRUCT_OFFSET (GimpLayerMaskClass, show_changed),
|
|
NULL, NULL,
|
|
gimp_marshal_VOID__VOID,
|
|
G_TYPE_NONE, 0);
|
|
|
|
viewable_class->default_stock_id = "gimp-layer-mask";
|
|
|
|
item_class->is_attached = gimp_layer_mask_is_attached;
|
|
item_class->duplicate = gimp_layer_mask_duplicate;
|
|
item_class->rename = gimp_layer_mask_rename;
|
|
item_class->translate_desc = _("Move Layer Mask");
|
|
}
|
|
|
|
static void
|
|
gimp_layer_mask_init (GimpLayerMask *layer_mask)
|
|
{
|
|
layer_mask->layer = NULL;
|
|
layer_mask->apply_mask = TRUE;
|
|
layer_mask->edit_mask = TRUE;
|
|
layer_mask->show_mask = FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gimp_layer_mask_is_attached (GimpItem *item)
|
|
{
|
|
GimpLayerMask *mask = GIMP_LAYER_MASK (item);
|
|
GimpLayer *layer = gimp_layer_mask_get_layer (mask);
|
|
|
|
return (GIMP_IS_IMAGE (item->gimage) &&
|
|
GIMP_IS_LAYER (layer) &&
|
|
gimp_layer_get_mask (layer) == mask &&
|
|
gimp_item_is_attached (GIMP_ITEM (layer)));
|
|
}
|
|
|
|
static GimpItem *
|
|
gimp_layer_mask_duplicate (GimpItem *item,
|
|
GType new_type,
|
|
gboolean add_alpha)
|
|
{
|
|
GimpLayerMask *layer_mask;
|
|
GimpItem *new_item;
|
|
GimpLayerMask *new_layer_mask;
|
|
|
|
g_return_val_if_fail (g_type_is_a (new_type, GIMP_TYPE_DRAWABLE), NULL);
|
|
|
|
new_item = GIMP_ITEM_CLASS (parent_class)->duplicate (item, new_type,
|
|
add_alpha);
|
|
|
|
if (! GIMP_IS_LAYER_MASK (new_item))
|
|
return new_item;
|
|
|
|
layer_mask = GIMP_LAYER_MASK (item);
|
|
new_layer_mask = GIMP_LAYER_MASK (new_item);
|
|
|
|
new_layer_mask->apply_mask = layer_mask->apply_mask;
|
|
new_layer_mask->edit_mask = layer_mask->edit_mask;
|
|
new_layer_mask->show_mask = layer_mask->show_mask;
|
|
|
|
return new_item;
|
|
}
|
|
|
|
static gboolean
|
|
gimp_layer_mask_rename (GimpItem *item,
|
|
const gchar *new_name,
|
|
const gchar *undo_desc)
|
|
{
|
|
/* reject renaming, layer masks are always named "<layer name> mask" */
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
GimpLayerMask *
|
|
gimp_layer_mask_new (GimpImage *gimage,
|
|
gint width,
|
|
gint height,
|
|
const gchar *name,
|
|
const GimpRGB *color)
|
|
{
|
|
GimpLayerMask *layer_mask;
|
|
|
|
layer_mask = g_object_new (GIMP_TYPE_LAYER_MASK, NULL);
|
|
|
|
gimp_drawable_configure (GIMP_DRAWABLE (layer_mask),
|
|
gimage,
|
|
0, 0, width, height,
|
|
GIMP_GRAY_IMAGE, name);
|
|
|
|
/* set the layer_mask color and opacity */
|
|
GIMP_CHANNEL (layer_mask)->color = *color;
|
|
GIMP_CHANNEL (layer_mask)->show_masked = TRUE;
|
|
|
|
/* selection mask variables */
|
|
GIMP_CHANNEL (layer_mask)->x2 = width;
|
|
GIMP_CHANNEL (layer_mask)->y2 = height;
|
|
|
|
return layer_mask;
|
|
}
|
|
|
|
void
|
|
gimp_layer_mask_set_layer (GimpLayerMask *layer_mask,
|
|
GimpLayer *layer)
|
|
{
|
|
g_return_if_fail (GIMP_IS_LAYER_MASK (layer_mask));
|
|
g_return_if_fail (layer == NULL || GIMP_IS_LAYER (layer));
|
|
|
|
layer_mask->layer = layer;
|
|
|
|
if (layer)
|
|
{
|
|
gchar *mask_name;
|
|
|
|
GIMP_ITEM (layer_mask)->offset_x = GIMP_ITEM (layer)->offset_x;
|
|
GIMP_ITEM (layer_mask)->offset_y = GIMP_ITEM (layer)->offset_y;
|
|
|
|
mask_name = g_strdup_printf (_("%s mask"),
|
|
gimp_object_get_name (GIMP_OBJECT (layer)));
|
|
gimp_object_set_name (GIMP_OBJECT (layer_mask), mask_name);
|
|
g_free (mask_name);
|
|
}
|
|
}
|
|
|
|
GimpLayer *
|
|
gimp_layer_mask_get_layer (const GimpLayerMask *layer_mask)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_LAYER_MASK (layer_mask), NULL);
|
|
|
|
return layer_mask->layer;
|
|
}
|
|
|
|
void
|
|
gimp_layer_mask_set_apply (GimpLayerMask *layer_mask,
|
|
gboolean apply,
|
|
gboolean push_undo)
|
|
{
|
|
g_return_if_fail (GIMP_IS_LAYER_MASK (layer_mask));
|
|
|
|
if (layer_mask->apply_mask != apply)
|
|
{
|
|
GimpImage *gimage = GIMP_ITEM (layer_mask)->gimage;
|
|
|
|
if (push_undo)
|
|
gimp_image_undo_push_layer_mask_apply (gimage, _("Apply Layer Mask"),
|
|
layer_mask);
|
|
|
|
layer_mask->apply_mask = apply ? TRUE : FALSE;
|
|
|
|
if (layer_mask->layer)
|
|
{
|
|
GimpDrawable *drawable = GIMP_DRAWABLE (layer_mask->layer);
|
|
|
|
gimp_drawable_update (drawable,
|
|
0, 0,
|
|
gimp_item_width (GIMP_ITEM (drawable)),
|
|
gimp_item_height (GIMP_ITEM (drawable)));
|
|
}
|
|
|
|
g_signal_emit (layer_mask, layer_mask_signals[APPLY_CHANGED], 0);
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gimp_layer_mask_get_apply (const GimpLayerMask *layer_mask)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_LAYER_MASK (layer_mask), FALSE);
|
|
|
|
return layer_mask->apply_mask;
|
|
}
|
|
|
|
void
|
|
gimp_layer_mask_set_edit (GimpLayerMask *layer_mask,
|
|
gboolean edit)
|
|
{
|
|
g_return_if_fail (GIMP_IS_LAYER_MASK (layer_mask));
|
|
|
|
if (layer_mask->edit_mask != edit)
|
|
{
|
|
layer_mask->edit_mask = edit ? TRUE : FALSE;
|
|
|
|
g_signal_emit (layer_mask, layer_mask_signals[EDIT_CHANGED], 0);
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gimp_layer_mask_get_edit (const GimpLayerMask *layer_mask)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_LAYER_MASK (layer_mask), FALSE);
|
|
|
|
return layer_mask->edit_mask;
|
|
}
|
|
|
|
void
|
|
gimp_layer_mask_set_show (GimpLayerMask *layer_mask,
|
|
gboolean show,
|
|
gboolean push_undo)
|
|
{
|
|
g_return_if_fail (GIMP_IS_LAYER_MASK (layer_mask));
|
|
|
|
if (layer_mask->show_mask != show)
|
|
{
|
|
GimpImage *gimage = GIMP_ITEM (layer_mask)->gimage;
|
|
|
|
if (push_undo)
|
|
gimp_image_undo_push_layer_mask_show (gimage, _("Show Layer Mask"),
|
|
layer_mask);
|
|
|
|
layer_mask->show_mask = show ? TRUE : FALSE;
|
|
|
|
if (layer_mask->layer)
|
|
{
|
|
GimpDrawable *drawable = GIMP_DRAWABLE (layer_mask->layer);
|
|
|
|
gimp_drawable_update (drawable,
|
|
0, 0,
|
|
gimp_item_width (GIMP_ITEM (drawable)),
|
|
gimp_item_height (GIMP_ITEM (drawable)));
|
|
}
|
|
|
|
g_signal_emit (layer_mask, layer_mask_signals[SHOW_CHANGED], 0);
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gimp_layer_mask_get_show (const GimpLayerMask *layer_mask)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_LAYER_MASK (layer_mask), FALSE);
|
|
|
|
return layer_mask->show_mask;
|
|
}
|