gdkrgb.h

gtk是linux一款强大的夸平台的图形化开发工具

/* GTK - The GIMP Toolkit
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library 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.
 */

/*
 * Modified by the GTK+ Team and others 1997-1999.  See the AUTHORS
 * file for a list of people on the GTK+ Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
 */

#ifndef __GDK_RGB_H__
#define __GDK_RGB_H__

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

typedef struct _GdkRgbCmap GdkRgbCmap;

struct _GdkRgbCmap {
  guint32 colors[256];
  guchar lut[256]; /* for 8-bit modes */
};

void
gdk_rgb_init (void);

gulong
gdk_rgb_xpixel_from_rgb (guint32 rgb);

void
gdk_rgb_gc_set_foreground (GdkGC *gc, guint32 rgb);

void
gdk_rgb_gc_set_background (GdkGC *gc, guint32 rgb);

typedef enum
{
  GDK_RGB_DITHER_NONE,
  GDK_RGB_DITHER_NORMAL,
  GDK_RGB_DITHER_MAX
} GdkRgbDither;

void
gdk_draw_rgb_image (GdkDrawable *drawable,
		    GdkGC *gc,
		    gint x,
		    gint y,
		    gint width,
		    gint height,
		    GdkRgbDither dith,
		    guchar *rgb_buf,
		    gint rowstride);

void
gdk_draw_rgb_image_dithalign (GdkDrawable *drawable,
			      GdkGC *gc,
			      gint x,
			      gint y,
			      gint width,
			      gint height,
			      GdkRgbDither dith,
			      guchar *rgb_buf,
			      gint rowstride,
			      gint xdith,
			      gint ydith);

void
gdk_draw_rgb_32_image (GdkDrawable *drawable,
		       GdkGC *gc,
		       gint x,
		       gint y,
		       gint width,
		       gint height,
		       GdkRgbDither dith,
		       guchar *buf,
		       gint rowstride);

void
gdk_draw_gray_image (GdkDrawable *drawable,
		     GdkGC *gc,
		     gint x,
		     gint y,
		     gint width,
		     gint height,
		     GdkRgbDither dith,
		     guchar *buf,
		     gint rowstride);

GdkRgbCmap *
gdk_rgb_cmap_new (guint32 *colors, gint n_colors);

void
gdk_rgb_cmap_free (GdkRgbCmap *cmap);

void
gdk_draw_indexed_image (GdkDrawable *drawable,
			GdkGC *gc,
			gint x,
			gint y,
			gint width,
			gint height,
			GdkRgbDither dith,
			guchar *buf,
			gint rowstride,
			GdkRgbCmap *cmap);


/* Below are some functions which are primarily useful for debugging
   and experimentation. */
gboolean
gdk_rgb_ditherable (void);

void
gdk_rgb_set_verbose (gboolean verbose);

/* experimental colormap stuff */
void
gdk_rgb_set_install (gboolean install);

void
gdk_rgb_set_min_colors (gint min_colors);

GdkColormap *
gdk_rgb_get_cmap (void);

GdkVisual *
gdk_rgb_get_visual (void);

#ifdef __cplusplus
}
#endif /* __cplusplus */


#endif /* __GDK_RGB_H__ */