gtk2/gdk/gdkcolor.h

/* GDK - The GIMP Drawing Kit
 * 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 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.
 */

/*
 * Modified by the GTK+ Team and others 1997-2000.  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_COLOR_H__
#define __GDK_COLOR_H__

#include <cairo.h>
#include <gdk/gdktypes.h>

G_BEGIN_DECLS

/* The color type.
 *   A color consists of red, green and blue values in the
 *    range 0-65535 and a pixel value. The pixel value is highly
 *    dependent on the depth and colormap which this color will
 *    be used to draw into. Therefore, sharing colors between
 *    colormaps is a bad idea.
 */
struct _GdkColor
{
  guint32 pixel;
  guint16 red;
  guint16 green;
  guint16 blue;
};

/* The colormap type.
 */

typedef struct _GdkColormapClass GdkColormapClass;

#define GDK_TYPE_COLORMAP              (gdk_colormap_get_type ())
#define GDK_COLORMAP(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_COLORMAP, GdkColormap))
#define GDK_COLORMAP_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_COLORMAP, GdkColormapClass))
#define GDK_IS_COLORMAP(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_COLORMAP))
#define GDK_IS_COLORMAP_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_COLORMAP))
#define GDK_COLORMAP_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_COLORMAP, GdkColormapClass))

#define GDK_TYPE_COLOR                 (gdk_color_get_type ())

struct _GdkColormap
{
  /*< private >*/
  GObject parent_instance;

  /*< public >*/
  gint      size;
  GdkColor *colors;

  /*< private >*/
  GdkVisual *visual;
  
  gpointer windowing_data;
};

struct _GdkColormapClass
{
  GObjectClass parent_class;

};

GType        gdk_colormap_get_type (void) G_GNUC_CONST;

GdkColormap* gdk_colormap_new	  (GdkVisual   *visual,
				   gboolean	allocate);

#ifndef GDK_DISABLE_DEPRECATED
GdkColormap* gdk_colormap_ref	  (GdkColormap *cmap);
void	     gdk_colormap_unref	  (GdkColormap *cmap);
#endif 

#ifndef GDK_MULTIHEAD_SAFE
GdkColormap* gdk_colormap_get_system	        (void);
#endif

GdkScreen *gdk_colormap_get_screen (GdkColormap *cmap);

#ifndef GDK_DISABLE_DEPRECATED
gint gdk_colormap_get_system_size  (void);
#endif

#if !defined (GDK_DISABLE_DEPRECATED) || defined (GDK_COMPILATION)
/* Used by gdk_colors_store () */
void gdk_colormap_change (GdkColormap	*colormap,
			  gint		 ncolors);
#endif 

gint  gdk_colormap_alloc_colors   (GdkColormap    *colormap,
				   GdkColor       *colors,
				   gint            n_colors,
				   gboolean        writeable,
				   gboolean        best_match,
				   gboolean       *success);
gboolean gdk_colormap_alloc_color (GdkColormap    *colormap,
				   GdkColor       *color,
				   gboolean        writeable,
				   gboolean        best_match);
void     gdk_colormap_free_colors (GdkColormap    *colormap,
				   const GdkColor *colors,
				   gint            n_colors);
void     gdk_colormap_query_color (GdkColormap    *colormap,
				   gulong          pixel,
				   GdkColor       *result);

GdkVisual *gdk_colormap_get_visual (GdkColormap *colormap);

GdkColor *gdk_color_copy      (const GdkColor *color);
void      gdk_color_free      (GdkColor       *color);
gboolean  gdk_color_parse     (const gchar    *spec,
			       GdkColor       *color);
guint     gdk_color_hash      (const GdkColor *colora);
gboolean  gdk_color_equal     (const GdkColor *colora,
			       const GdkColor *colorb);
gchar *   gdk_color_to_string (const GdkColor *color);

GType     gdk_color_get_type (void) G_GNUC_CONST;

/* The following functions are deprecated */
#ifndef GDK_DISABLE_DEPRECATED
void gdk_colors_store	 (GdkColormap	*colormap,
			  GdkColor	*colors,
			  gint		 ncolors);
gint gdk_color_white	 (GdkColormap	*colormap,
			  GdkColor	*color);
gint gdk_color_black	 (GdkColormap	*colormap,
			  GdkColor	*color);
gint gdk_color_alloc	 (GdkColormap	*colormap,
			  GdkColor	*color);
gint gdk_color_change	 (GdkColormap	*colormap,
			  GdkColor	*color);
#endif /* GDK_DISABLE_DEPRECATED */

#if !defined (GDK_DISABLE_DEPRECATED) || defined (GDK_COMPILATION)
/* Used by gdk_rgb_try_colormap () */
gint gdk_colors_alloc	 (GdkColormap	*colormap,
			  gboolean	 contiguous,
			  gulong	*planes,
			  gint		 nplanes,
			  gulong	*pixels,
			  gint		 npixels);
void gdk_colors_free	 (GdkColormap	*colormap,
			  gulong	*pixels,
			  gint		 npixels,
			  gulong	 planes);
#endif /* !GDK_DISABLE_DEPRECATED || GDK_COMPILATION */

G_END_DECLS

#endif /* __GDK_COLOR_H__ */