/* 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/.  */#include <config.h>#include <time.h>#include <sys/ioctl.h>#include <string.h>#include <stdlib.h>#include "gdkcolor.h"#include "gdkprivate-fb.h"#define GDK_COLORMAP_PRIVATE_DATA(cmap) ((GdkColormapPrivateFB *) GDK_COLORMAP (cmap)->windowing_data)static gint  gdk_colormap_match_color (GdkColormap *cmap,				       GdkColor    *color,				       const gchar *available);static void  gdk_fb_color_round_to_hw (GdkColor *color);static gpointer parent_class;static voidgdk_colormap_finalize (GObject *object){  GdkColormap *colormap = GDK_COLORMAP (object);  GdkColormapPrivateFB *private = GDK_COLORMAP_PRIVATE_DATA (colormap);  if (private->hash)    g_hash_table_destroy (private->hash);    g_free (private->info);  g_free (colormap->colors);  g_free (private);  G_OBJECT_CLASS (parent_class)->finalize (object);}static voidgdk_colormap_init (GdkColormap *colormap){  GdkColormapPrivateFB *private;  private = g_new (GdkColormapPrivateFB, 1);  colormap->windowing_data = private;    colormap->size = 0;  colormap->colors = NULL;}static voidgdk_colormap_class_init (GdkColormapClass *klass){  GObjectClass *object_class = G_OBJECT_CLASS (klass);  parent_class = g_type_class_peek_parent (klass);  object_class->finalize = gdk_colormap_finalize;}GTypegdk_colormap_get_type (void){  static GType object_type = 0;  if (!object_type)    {      static const GTypeInfo object_info =      {        sizeof (GdkColormapClass),        (GBaseInitFunc) NULL,        (GBaseFinalizeFunc) NULL,        (GClassInitFunc) gdk_colormap_class_init,        NULL,           /* class_finalize */        NULL,           /* class_data */        sizeof (GdkColormap),        0,              /* n_preallocs */        (GInstanceInitFunc) gdk_colormap_init,      };            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){  GdkColormap *colormap;  GdkColormap *system;  GdkColormapPrivateFB *private;  GdkFBDisplay *fbd;  int i;  g_return_val_if_fail (visual != NULL, NULL);  colormap = g_object_new (gdk_colormap_get_type (), NULL);  private = GDK_COLORMAP_PRIVATE_DATA (colormap);  colormap->visual = visual;  fbd = gdk_display;  private->hash = NULL;    colormap->size = visual->colormap_size;  colormap->colors = NULL;  switch (visual->type)    {    case GDK_VISUAL_STATIC_GRAY:    case GDK_VISUAL_STATIC_COLOR:    case GDK_VISUAL_GRAYSCALE:    case GDK_VISUAL_PSEUDO_COLOR:      private->info = g_new0 (GdkColorInfo, colormap->size);      colormap->colors = g_new (GdkColor, colormap->size);            private->hash = g_hash_table_new ((GHashFunc) gdk_color_hash,					(GEqualFunc) gdk_color_equal);      system = gdk_colormap_get_system ();      memcpy (colormap->colors, system->colors, colormap->size * sizeof (GdkColor));            if (private_cmap)	{	  guint16 red[256], green[256], blue[256];	  struct fb_cmap fbc = {0, 256};	  fbc.red = red;	  fbc.green = green;	  fbc.blue = blue;	  if (ioctl (fbd->fb_fd, FBIOGETCMAP, &fbc))	    g_error("ioctl(FBIOGETCMAP) failed");	  for (i = 0; i < colormap->size; i++)	    {	      colormap->colors[i].pixel = i;	      colormap->colors[i].red = red[i];	      colormap->colors[i].green = green[i];	      colormap->colors[i].blue = blue[i];	    }	  gdk_colormap_change (colormap, colormap->size);	}      break;    case GDK_VISUAL_DIRECT_COLOR:      g_warning ("gdk_colormap_new () on a direct color visual not implemented");#if 0      colormap->colors = g_new (GdkColor, colormap->size);      size = 1 << visual->red_prec;      for (i = 0; i < size; i++)	colormap->colors[i].red = i * 65535 / (size - 1);      size = 1 << visual->green_prec;      for (i = 0; i < size; i++)	colormap->colors[i].green = i * 65535 / (size - 1);      size = 1 << visual->blue_prec;      for (i = 0; i < size; i++)	colormap->colors[i].blue = i * 65535 / (size - 1);      gdk_colormap_change (colormap, colormap->size);#endif      break;    default:      g_assert_not_reached ();    case GDK_VISUAL_TRUE_COLOR:      break;    }  return colormap;}GdkColormap*gdk_screen_get_system_colormap (GdkScreen *screen){  static GdkColormap *colormap = NULL;  if (!colormap)    {      GdkColormapPrivateFB *private;      GdkVisual *visual = gdk_visual_get_system ();      int i, r, g, b;            colormap = g_object_new (gdk_colormap_get_type (), NULL);      private = GDK_COLORMAP_PRIVATE_DATA (colormap);      colormap->visual = visual;      private->hash = NULL;            colormap->size = visual->colormap_size;      colormap->colors = NULL;            switch (visual->type)	{	case GDK_VISUAL_STATIC_GRAY:	case GDK_VISUAL_STATIC_COLOR:	case GDK_VISUAL_GRAYSCALE:	case GDK_VISUAL_PSEUDO_COLOR:	  private->info = g_new0 (GdkColorInfo, colormap->size);	  colormap->colors = g_new (GdkColor, colormap->size);	  	  private->hash = g_hash_table_new ((GHashFunc) gdk_color_hash,					    (GEqualFunc) gdk_color_equal);	  switch(visual->type)	    {	    case GDK_VISUAL_GRAYSCALE:	      for(i = 0; i < 256; i++) {		colormap->colors[i].red = 		  colormap->colors[i].green =		  colormap->colors[i].blue = i << 8;		gdk_fb_color_round_to_hw (&colormap->colors[i]);	      }	      i--;	      colormap->colors[i].red = 		colormap->colors[i].green =		colormap->colors[i].blue = 65535; /* Make it a true white */	      gdk_fb_color_round_to_hw (&colormap->colors[i]);	      break;	    case GDK_VISUAL_PSEUDO_COLOR:	      /* Color cube stolen from gdkrgb upon advice from Owen */	      for(i = r = 0; r < 6; r++)		for(g = 0; g < 6; g++)		  for(b = 0; b < 6; b++)		    {		      colormap->colors[i].red = r * 65535 / 5;		      colormap->colors[i].green = g * 65535 / 5;		      colormap->colors[i].blue = b * 65535 / 5;		      gdk_fb_color_round_to_hw (&colormap->colors[i]);		      i++;		    }	      g_assert (i == 216);	      /* Fill in remaining space with grays */	      for(i = 216; i < 256; i++)		{		  colormap->colors[i].red = 		    colormap->colors[i].green =		    colormap->colors[i].blue = (i - 216) * 40;		  gdk_fb_color_round_to_hw (&colormap->colors[i]);		}	      /* Real white */	      colormap->colors[255].red = 		  colormap->colors[255].green =		  colormap->colors[255].blue = 65535;	      gdk_fb_color_round_to_hw (&colormap->colors[255]);	      break;	    default:	      break;	    }	  break;	case GDK_VISUAL_DIRECT_COLOR:	  g_warning ("gdk_colormap_get_system() on a direct color visual is not implemented");	  break;	default:	  g_assert_not_reached ();	case GDK_VISUAL_TRUE_COLOR:	  break;	}            /* Lock all colors for the system colormap       * on pseudocolor visuals. The AA text rendering       * takes to many colors otherwise.       */      if ((visual->type == GDK_VISUAL_GRAYSCALE) ||	  (visual->type == GDK_VISUAL_PSEUDO_COLOR))	{	  for(i = 0; i < 256; i++)	    {	      colormap->colors[i].pixel = i;	      private->info[i].ref_count = 1;	      g_hash_table_insert (private->hash,				   &colormap->colors[i],				   &colormap->colors[i]);	    }	}      gdk_colormap_change (colormap, colormap->size);    }  return colormap;}gintgdk_colormap_get_system_size (void){  return 1 << (gdk_display->modeinfo.bits_per_pixel);}voidgdk_colormap_change (GdkColormap *colormap,		     gint         ncolors){  guint16 red[256], green[256], blue[256];  struct fb_cmap fbc = {0,256};  GdkColormapPrivateFB *private;  int i;  g_return_if_fail (colormap != NULL);  fbc.red = red;  fbc.green = green;  fbc.blue = blue;  private = GDK_COLORMAP_PRIVATE_DATA (colormap);  switch (colormap->visual->type)    {    case GDK_VISUAL_GRAYSCALE:      for(i = 0; i < ncolors; i++)	{	  red[i] = green[i] = blue[i] =	    (colormap->colors[i].red +	     colormap->colors[i].green +	     colormap->colors[i].blue)/3;	}      ioctl (gdk_display->fb_fd, FBIOPUTCMAP, &fbc);      break;    case GDK_VISUAL_PSEUDO_COLOR:      for (i = 0; i < ncolors; i++)	{	  red[i] = colormap->colors[i].red;	  green[i] = colormap->colors[i].green;	  blue[i] = colormap->colors[i].blue;	}      ioctl (gdk_display->fb_fd, FBIOPUTCMAP, &fbc);      break;    default:      break;    }}voidgdk_colormap_free_colors (GdkColormap *colormap,			  GdkColor    *colors,			  gint         ncolors){  GdkColormapPrivateFB *private;  gint i;  g_return_if_fail (colormap != NULL);  g_return_if_fail (colors != NULL);  private = GDK_COLORMAP_PRIVATE_DATA (colormap);  if ((colormap->visual->type != GDK_VISUAL_PSEUDO_COLOR) &&      (colormap->visual->type != GDK_VISUAL_GRAYSCALE))    return;  for (i = 0; i < ncolors; i++)    {      gulong pixel = colors[i].pixel;            if (private->info[pixel].ref_count)	{	  private->info[pixel].ref_count--;	  if (private->info[pixel].ref_count == 0)	    {	      if (!(private->info[pixel].flags & GDK_COLOR_WRITEABLE))		g_hash_table_remove (private->hash, &colormap->colors[pixel]);	      private->info[pixel].flags = 0;	    }	}    }}/******************** * Color allocation * ********************/static voidgdk_fb_color_round_to_hw (GdkColor *color){  guint rmask, gmask, bmask, len;  len = gdk_display->modeinfo.red.length;  rmask = ((1 << len) - 1) << (16-len);  len = gdk_display->modeinfo.green.length;  gmask = ((1 << len) - 1) << (16-len);  len = gdk_display->modeinfo.blue.length;  bmask = ((1 << len) - 1) << (16-len);    color->red &=rmask;  color->green &=gmask;  color->blue &=bmask;}/* Try to allocate a single color using XAllocColor. If it succeeds, * cache the result in our colormap, and store in ret. */static gboolean gdk_colormap_alloc1 (GdkColormap *colormap,		     GdkColor    *color,		     GdkColor    *ret){  GdkColormapPrivateFB *private;  int i;  private = GDK_COLORMAP_PRIVATE_DATA (colormap);  if (colormap->visual->type != GDK_VISUAL_GRAYSCALE