gimp/libgimpwidgets/gimppreviewarea.h

/* LIBGIMP - The GIMP Library
 * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifndef __GIMP_PREVIEW_AREA_H__
#define __GIMP_PREVIEW_AREA_H__

G_BEGIN_DECLS


#define GIMP_TYPE_PREVIEW_AREA            (gimp_preview_area_get_type ())
#define GIMP_PREVIEW_AREA(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_PREVIEW_AREA, GimpPreviewArea))
#define GIMP_PREVIEW_AREA_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_PREVIEW_AREA, GimpPreviewAreaClass))
#define GIMP_IS_PREVIEW_AREA(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_PREVIEW_AREA))
#define GIMP_IS_PREVIEW_AREA_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_PREVIEW_AREA))
#define GIMP_PREVIEW_AREA_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_PREVIEW_AREA, GimpPreviewArea))


typedef struct _GimpPreviewAreaClass  GimpPreviewAreaClass;

struct _GimpPreviewArea
{
  GtkDrawingArea   parent_instance;

  GimpCheckSize    check_size;
  GimpCheckType    check_type;
  gint             width;
  gint             height;
  gint             rowstride;
  gint             offset_x;
  gint             offset_y;
  gint             max_width;
  gint             max_height;
  guchar          *buf;
  guchar          *colormap;
};

struct _GimpPreviewAreaClass
{
  GtkDrawingAreaClass  parent_class;

  /* Padding for future expansion */
  void (* _gimp_reserved1) (void);
  void (* _gimp_reserved2) (void);
  void (* _gimp_reserved3) (void);
  void (* _gimp_reserved4) (void);
};


GType       gimp_preview_area_get_type       (void) G_GNUC_CONST;

GtkWidget * gimp_preview_area_new            (void);

void        gimp_preview_area_draw           (GimpPreviewArea *area,
                                              gint             x,
                                              gint             y,
                                              gint             width,
                                              gint             height,
                                              GimpImageType    type,
                                              const guchar    *buf,
                                              gint             rowstride);
void        gimp_preview_area_blend          (GimpPreviewArea *area,
                                              gint             x,
                                              gint             y,
                                              gint             width,
                                              gint             height,
                                              GimpImageType    type,
                                              const guchar    *buf1,
                                              gint             rowstride1,
                                              const guchar    *buf2,
                                              gint             rowstride2,
                                              guchar           opacity);
void        gimp_preview_area_mask           (GimpPreviewArea *area,
                                              gint             x,
                                              gint             y,
                                              gint             width,
                                              gint             height,
                                              GimpImageType    type,
                                              const guchar    *buf1,
                                              gint             rowstride1,
                                              const guchar    *buf2,
                                              gint             rowstride2,
                                              const guchar    *mask,
                                              gint             rowstride_mask);
void        gimp_preview_area_fill           (GimpPreviewArea *area,
                                              gint             x,
                                              gint             y,
                                              gint             width,
                                              gint             height,
                                              guchar           red,
                                              guchar           green,
                                              guchar           blue);

void        gimp_preview_area_set_offsets    (GimpPreviewArea *area,
                                              gint             x,
                                              gint             y);

void        gimp_preview_area_set_colormap   (GimpPreviewArea *area,
                                              const guchar    *colormap,
                                              gint             num_colors);

void        gimp_preview_area_set_max_size   (GimpPreviewArea *area,
                                              gint             width,
                                              gint             height);

void        gimp_preview_area_menu_popup     (GimpPreviewArea *area,
                                              GdkEventButton  *event);


G_END_DECLS

#endif /* __GIMP_PREVIEW_AREA_H__ */