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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.
*/
#ifndef __GIMP_LAYER_H__
#define __GIMP_LAYER_H__
#include "gimpdrawable.h"
#define GIMP_TYPE_LAYER (gimp_layer_get_type ())
#define GIMP_LAYER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_LAYER, GimpLayer))
#define GIMP_LAYER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_LAYER, GimpLayerClass))
#define GIMP_IS_LAYER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_LAYER))
#define GIMP_IS_LAYER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_LAYER))
#define GIMP_LAYER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_LAYER, GimpLayerClass))
typedef struct _GimpLayerClass GimpLayerClass;
struct _GimpLayer
{
GimpDrawable parent_instance;
gdouble opacity; /* layer opacity */
GimpLayerModeEffects mode; /* layer combination mode */
gboolean preserve_trans; /* preserve transparency */
GimpLayerMask *mask; /* possible layer mask */
/* Floating selections */
struct
{
TileManager *backing_store; /* for obscured regions */
GimpDrawable *drawable; /* floating sel is attached to */
gboolean initial; /* is fs composited yet? */
gboolean boundary_known; /* is the current boundary valid */
BoundSeg *segs; /* boundary of floating sel */
gint num_segs; /* number of segs in boundary */
} fs;
};
struct _GimpLayerClass
{
GimpDrawableClass parent_class;
void (* opacity_changed) (GimpLayer *layer);
void (* mode_changed) (GimpLayer *layer);
void (* preserve_trans_changed) (GimpLayer *layer);
void (* mask_changed) (GimpLayer *layer);
};
/* function declarations */
GType gimp_layer_get_type (void) G_GNUC_CONST;
GimpLayer * gimp_layer_new (GimpImage *gimage,
gint width,
gint height,
GimpImageType type,
const gchar *name,
gdouble opacity,
GimpLayerModeEffects mode);
GimpLayer * gimp_layer_new_from_tiles (TileManager *tiles,
GimpImage *dest_gimage,
GimpImageType type,
const gchar *name,
gdouble opacity,
GimpLayerModeEffects mode);
GimpLayerMask * gimp_layer_create_mask (const GimpLayer *layer,
GimpAddMaskType mask_type);
GimpLayerMask * gimp_layer_add_mask (GimpLayer *layer,
GimpLayerMask *mask,
gboolean push_undo);
void gimp_layer_apply_mask (GimpLayer *layer,
GimpMaskApplyMode mode,
gboolean push_undo);
void gimp_layer_add_alpha (GimpLayer *layer);
void gimp_layer_resize_to_image (GimpLayer *layer,
GimpContext *context);
BoundSeg * gimp_layer_boundary (GimpLayer *layer,
gint *num_segs);
gboolean gimp_layer_pick_correlate (GimpLayer *layer,
gint x,
gint y);
GimpLayerMask * gimp_layer_get_mask (const GimpLayer *layer);
gboolean gimp_layer_is_floating_sel (const GimpLayer *layer);
void gimp_layer_set_opacity (GimpLayer *layer,
gdouble opacity,
gboolean push_undo);
gdouble gimp_layer_get_opacity (const GimpLayer *layer);
void gimp_layer_set_mode (GimpLayer *layer,
GimpLayerModeEffects mode,
gboolean push_undo);
GimpLayerModeEffects gimp_layer_get_mode (const GimpLayer *layer);
void gimp_layer_set_preserve_trans (GimpLayer *layer,
gboolean preserve,
gboolean push_undo);
gboolean gimp_layer_get_preserve_trans (const GimpLayer *layer);
#endif /* __GIMP_LAYER_H__ */
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