/* 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 __LAYER_PVT_H__
#define __LAYER_PVT_H__

#include "layer.h"

#include "boundary.h"
#include "drawable.h"
#include "channel.h"
#include "temp_buf.h"
#include "tile_manager.h"

#include "drawable_pvt.h"
#include "channel_pvt.h"

struct _GimpLayer
{
  GimpDrawable drawable;

  gboolean   linked;		  /*  control linkage                */
  gboolean   preserve_trans;	  /*  preserve transparency          */

  LayerMask *mask;                /*  possible layer mask            */
  gint       apply_mask;          /*  controls mask application      */
  gboolean   edit_mask;           /*  edit mask or layer?            */
  gboolean   show_mask;           /*  show mask or layer?            */

  gint              opacity;      /*  layer opacity                  */
  LayerModeEffects  mode;         /*  layer combination mode         */

  /*  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;
};

struct _GimpLayerMask
{
  GimpChannel drawable;

  Layer * layer;                 /*  ID of layer */
};

struct _GimpLayerMaskClass
{
  GimpChannelClass parent_class;
};

#endif /* __LAYER_PVT_H__ */