/* gdkcolor-quartz.c
 *
 * Copyright (C) 2005 Imendio AB
 *
 * 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.
 */

#include <config.h>

#include "gdkcolor.h"
#include "gdkprivate-quartz.h"

GType
gdk_colormap_get_type (void)
{
  static GType object_type = 0;

  if (!object_type)
    {
      static const GTypeInfo object_info =
      {
        sizeof (GdkColormapClass),
        (GBaseInitFunc) NULL,
        (GBaseFinalizeFunc) NULL,
        (GClassInitFunc) NULL,
        NULL,           /* class_finalize */
        NULL,           /* class_data */
        sizeof (GdkColormap),
        0,              /* n_preallocs */
        (GInstanceInitFunc) NULL,
      };
      
      object_type = g_type_register_static (G_TYPE_OBJECT,
                                            "GdkColormap",
                                            &object_info,
					    0);
    }
  
  return object_type;
}

GdkColormap *
gdk_colormap_new (GdkVisual *visual,
		  gint       private_cmap)
{
  g_return_val_if_fail (visual != NULL, NULL);

  /* FIXME: Implement */
  return NULL;
}

GdkColormap *
gdk_screen_get_system_colormap (GdkScreen *screen)
{
  static GdkColormap *colormap = NULL;

  g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);

  if (!colormap)
    {
      colormap = g_object_new (GDK_TYPE_COLORMAP, NULL);

      colormap->visual = gdk_visual_get_system ();
      colormap->size = colormap->visual->colormap_size;
    }

  return colormap;
}


GdkColormap *
gdk_screen_get_rgba_colormap (GdkScreen *screen)
{
  static GdkColormap *colormap = NULL;

  g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);

  if (!colormap)
    {
      colormap = g_object_new (GDK_TYPE_COLORMAP, NULL);

      colormap->visual = gdk_screen_get_rgba_visual (screen);
      colormap->size = colormap->visual->colormap_size;
    }

  return colormap;
}

void
gdk_colormap_change (GdkColormap *colormap,
		     gint         ncolors)
{
  /* FIXME: Implement */
}

void
gdk_colormap_free_colors (GdkColormap *colormap,
			  GdkColor    *colors,
			  gint         ncolors)
{
  /* This function shouldn't do anything since
   * colors are neve allocated.
   */
}

gint
gdk_colormap_alloc_colors (GdkColormap *colormap,
			   GdkColor    *colors,
			   gint         ncolors,
			   gboolean     writeable,
			   gboolean     best_match,
			   gboolean    *success)
{
  int i;

  for (i = 0; i < ncolors; i++)
    {
      colors[i].pixel = ((colors[i].red >> 8) & 0xff) << 16 |
	                ((colors[i].green >> 8) & 0xff) << 8 |
	                ((colors[i].blue >> 8) & 0xff);
    }

  return ncolors;
}

void
gdk_colormap_query_color (GdkColormap *colormap,
			  gulong       pixel,
			  GdkColor    *result)
{
  result->red = pixel >> 16 & 0xff;
  result->red += result->red << 8;

  result->green = pixel >> 8 & 0xff;
  result->green += result->green << 8;

  result->blue = pixel & 0xff;
  result->blue += result->blue << 8;
}

GdkScreen*
gdk_colormap_get_screen (GdkColormap *cmap)
{
  g_return_val_if_fail (cmap != NULL, NULL);

  return gdk_screen_get_default ();
}

void
_gdk_quartz_set_context_fill_color_from_pixel (CGContextRef context, GdkColormap *colormap, guint32 pixel)
{
  float red, green, blue, alpha;

  red = (pixel >> 16 & 0xff) / 255.0;
  green = (pixel >> 8 & 0xff) / 255.0;
  blue = (pixel & 0xff) / 255.0;

  if (colormap && gdk_colormap_get_visual (colormap)->depth == 32)
    alpha = (pixel >> 24 & 0xff) / 255.0;
  else
    alpha = 1.0;

  CGContextSetRGBFillColor (context, red, green, blue, alpha);
}

void
_gdk_quartz_set_context_stroke_color_from_pixel (CGContextRef context, GdkColormap *colormap, guint32 pixel)
{
  float red, green, blue, alpha;

  red = (pixel >> 16 & 0xff) / 255.0;
  green = (pixel >> 8 & 0xff) / 255.0;
  blue = (pixel & 0xff) / 255.0;

  if (colormap && gdk_colormap_get_visual (colormap)->depth == 32)
    alpha = (pixel >> 24 & 0xff) / 255.0;
  else
    alpha = 1.0;

  CGContextSetRGBStrokeColor (context, red, green, blue, 1.0);  
}