gimp/app/core/gimpdrawable.h

/* 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_DRAWABLE_H__
#define __GIMP_DRAWABLE_H__


#include "gimpviewable.h"


#define GIMP_TYPE_DRAWABLE            (gimp_drawable_get_type ())
#define GIMP_DRAWABLE(obj)            (GTK_CHECK_CAST ((obj), GIMP_TYPE_DRAWABLE, GimpDrawable))
#define GIMP_IS_DRAWABLE(obj)         (GTK_CHECK_TYPE ((obj), GIMP_TYPE_DRAWABLE))
#define GIMP_DRAWABLE_CLASS(klass)    (GTK_CHECK_CLASS_CAST ((klass), GIMP_TYPE_DRAWABLE, GimpDrawableClass))
#define GIMP_IS_DRAWABLE_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_DRAWABLE))


typedef struct _GimpDrawableClass GimpDrawableClass;

struct _GimpDrawable
{
  GimpViewable      parent_instance;

  TileManager      *tiles;              /* tiles for drawable data        */
  gboolean          visible;            /* controls visibility            */
  gint              width, height;      /* size of drawable               */
  gint              offset_x, offset_y; /* offset of layer in image       */

  gint              bytes;              /* bytes per pixel                */
  gint              ID;                 /* provides a unique ID           */
  guint32           tattoo;             /* provides a perminant ID        */
  GimpImage        *gimage;             /* gimage owner                   */
  GimpImageType     type;               /* type of drawable               */
  gboolean          has_alpha;          /* drawable has alpha             */

  GimpParasiteList *parasites;          /* Plug-in parasite data          */

  /*  Preview variables  */
  GSList           *preview_cache;     	/* preview caches of the channel  */
  gboolean          preview_valid;      /* is the preview valid?          */
};

struct _GimpDrawableClass
{
  GimpViewableClass  parent_class;

  void (* visibility_changed) (GimpDrawable *drawable);
  void (* removed)            (GimpDrawable *drawable);
};


/*  drawable access functions  */

GtkType         gimp_drawable_get_type           (void);

void            gimp_drawable_configure          (GimpDrawable       *drawable,
						  GimpImage          *gimage,
						  gint                width,
						  gint                height,
						  GimpImageType       type,
						  const gchar        *name);

gint            gimp_drawable_get_ID             (GimpDrawable       *drawable);
GimpDrawable  * gimp_drawable_get_by_ID          (gint                id);

GimpImage     * gimp_drawable_gimage             (const GimpDrawable *drawable);
void            gimp_drawable_set_gimage         (GimpDrawable       *drawable,
						  GimpImage          *gimage);

void            gimp_drawable_merge_shadow       (GimpDrawable       *drawable,
						  gint                undo);
void            gimp_drawable_fill               (GimpDrawable       *drawable,
						  const GimpRGB      *color);

gboolean        gimp_drawable_mask_bounds        (GimpDrawable       *drawable,
						  gint               *x1,
						  gint               *y1,
						  gint               *x2,
						  gint               *y2);

void            gimp_drawable_removed            (GimpDrawable       *drawable);

gboolean        gimp_drawable_has_alpha          (const GimpDrawable *drawable);
GimpImageType   gimp_drawable_type               (const GimpDrawable *drawable);
GimpImageType   gimp_drawable_type_with_alpha    (const GimpDrawable *drawable);
gboolean        gimp_drawable_is_rgb             (const GimpDrawable *drawable);
gboolean        gimp_drawable_is_gray            (const GimpDrawable *drawable);
gboolean        gimp_drawable_is_indexed         (const GimpDrawable *drawable);
TileManager   * gimp_drawable_data               (const GimpDrawable *drawable);
TileManager   * gimp_drawable_shadow             (GimpDrawable       *drawable);
gint            gimp_drawable_bytes              (const GimpDrawable *drawable);
gint            gimp_drawable_width              (const GimpDrawable *drawable);
gint            gimp_drawable_height             (const GimpDrawable *drawable);
gboolean	gimp_drawable_get_visible        (const GimpDrawable *drawable);
void            gimp_drawable_set_visible        (GimpDrawable       *drawable,
                                                  gboolean            visible);
void            gimp_drawable_offsets            (const GimpDrawable *drawable, 
						  gint               *offset_x,
						  gint               *offset_y);

guchar        * gimp_drawable_cmap               (const GimpDrawable *drawable);

guchar        * gimp_drawable_get_color_at       (GimpDrawable       *drawable,
						  gint                x,
						  gint                y);

void            gimp_drawable_parasite_attach    (GimpDrawable       *drawable,
						  GimpParasite       *parasite);
void            gimp_drawable_parasite_detach    (GimpDrawable       *drawable,
						  const gchar        *parasite);
GimpParasite  * gimp_drawable_parasite_find      (const GimpDrawable *drawable,
						  const gchar        *name);
gchar        ** gimp_drawable_parasite_list      (const GimpDrawable *drawable,
						  gint               *count);
Tattoo          gimp_drawable_get_tattoo         (const GimpDrawable *drawable);
void            gimp_drawable_set_tattoo         (GimpDrawable       *drawable,
						  Tattoo              tattoo);


#endif /* __GIMP_DRAWABLE_H__ */