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760 lines
16 KiB
C
760 lines
16 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include <time.h>
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#include <sys/ioctl.h>
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#include <string.h>
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#include <stdlib.h>
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#include "gdkcolor.h"
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#include "gdkprivate-fb.h"
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static gint gdk_colormap_match_color (GdkColormap *cmap,
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GdkColor *color,
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const gchar *available);
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GdkColormap*
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gdk_colormap_new (GdkVisual *visual,
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gint private_cmap)
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{
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GdkColormap *colormap;
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GdkColormapPrivateFB *private;
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GdkFBDisplay *fbd;
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int i;
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g_return_val_if_fail (visual != NULL, NULL);
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private = g_new (GdkColormapPrivateFB, 1);
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colormap = (GdkColormap*) private;
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private->base.visual = visual;
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private->base.ref_count = 1;
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fbd = gdk_display;
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private->hash = NULL;
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colormap->size = visual->colormap_size;
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colormap->colors = NULL;
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switch (visual->type)
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{
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case GDK_VISUAL_STATIC_GRAY:
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case GDK_VISUAL_STATIC_COLOR:
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case GDK_VISUAL_GRAYSCALE:
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case GDK_VISUAL_PSEUDO_COLOR:
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private->info = g_new0 (GdkColorInfo, colormap->size);
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colormap->colors = g_new (GdkColor, colormap->size);
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private->hash = g_hash_table_new ((GHashFunc) gdk_color_hash,
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(GCompareFunc) gdk_color_equal);
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if (private_cmap)
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{
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guint16 red[256], green[256], blue[256];
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struct fb_cmap fbc = {0, 256};
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fbc.red = red;
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fbc.green = green;
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fbc.blue = blue;
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if(ioctl(fbd->fd, FBIOGETCMAP, &fbc))
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g_error("ioctl(FBIOGETCMAP) failed");
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for (i = 0; i < colormap->size; i++)
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{
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colormap->colors[i].pixel = i;
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colormap->colors[i].red = red[i];
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colormap->colors[i].green = green[i];
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colormap->colors[i].blue = blue[i];
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}
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gdk_colormap_change (colormap, colormap->size);
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}
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break;
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case GDK_VISUAL_DIRECT_COLOR:
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g_error("NYI");
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#if 0
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colormap->colors = g_new (GdkColor, colormap->size);
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size = 1 << visual->red_prec;
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for (i = 0; i < size; i++)
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colormap->colors[i].red = i * 65535 / (size - 1);
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size = 1 << visual->green_prec;
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for (i = 0; i < size; i++)
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colormap->colors[i].green = i * 65535 / (size - 1);
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size = 1 << visual->blue_prec;
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for (i = 0; i < size; i++)
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colormap->colors[i].blue = i * 65535 / (size - 1);
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gdk_colormap_change (colormap, colormap->size);
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#endif
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break;
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default:
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g_assert_not_reached();
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case GDK_VISUAL_TRUE_COLOR:
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break;
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}
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return colormap;
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}
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void
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_gdk_colormap_real_destroy (GdkColormap *colormap)
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{
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GdkColormapPrivateFB *private = (GdkColormapPrivateFB*) colormap;
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if (private->hash)
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g_hash_table_destroy (private->hash);
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g_free (private->info);
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g_free (colormap->colors);
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g_free (colormap);
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}
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#define MIN_SYNC_TIME 2
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void
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gdk_colormap_sync (GdkColormap *colormap,
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gboolean force)
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{
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}
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GdkColormap*
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gdk_colormap_get_system (void)
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{
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static GdkColormap *colormap = NULL;
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if (!colormap)
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{
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guint16 red[256], green[256], blue[256];
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struct fb_cmap fbc = {0, 256};
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int i, r, g, b;
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GdkVisual *visual = gdk_visual_get_system();
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if(visual->type == GDK_VISUAL_GRAYSCALE
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|| visual->type == GDK_VISUAL_PSEUDO_COLOR)
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{
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fbc.red = red;
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fbc.green = green;
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fbc.blue = blue;
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switch(visual->type)
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{
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case GDK_VISUAL_GRAYSCALE:
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for(i = 0; i < 256; i++)
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red[i] = green[i] = blue[i] = i << 8;
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i--;
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red[i] = green[i] = blue[i] = 65535; /* Make it a true white */
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break;
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case GDK_VISUAL_PSEUDO_COLOR:
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/* Color cube stolen from gdkrgb upon advice from Owen */
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for(i = r = 0; r < 6; r++)
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for(g = 0; g < 6; g++)
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for(b = 0; b < 6; b++)
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{
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red[i] = r * 65535 / 5;
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green[i] = g * 65535 / 5;
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blue[i] = b * 65535 / 5;
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i++;
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}
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g_assert(i == 216);
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/* Fill in remaining space with grays */
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for(i = 216; i < 256; i++)
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{
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red[i] = green[i] = blue[i] =
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(i - 216) * 40;
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}
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/* Real white */
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red[255] = green[255] = blue[255] = 65535;
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break;
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default:
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break;
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}
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ioctl(gdk_display->fd, FBIOPUTCMAP, &fbc);
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}
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colormap = gdk_colormap_new(visual, TRUE);
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}
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return colormap;
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}
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gint
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gdk_colormap_get_system_size (void)
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{
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return 1 << (gdk_display->modeinfo.bits_per_pixel);
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}
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void
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gdk_colormap_change (GdkColormap *colormap,
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gint ncolors)
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{
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guint16 red[256], green[256], blue[256];
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struct fb_cmap fbc = {0,256};
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GdkColormapPrivateFB *private;
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int i;
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g_return_if_fail (colormap != NULL);
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fbc.red = red;
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fbc.green = green;
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fbc.blue = blue;
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private = (GdkColormapPrivateFB*) colormap;
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switch (private->base.visual->type)
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{
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case GDK_VISUAL_GRAYSCALE:
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for(i = 0; i < ncolors; i++)
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{
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red[i] = green[i] = blue[i] =
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(colormap->colors[i].red +
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colormap->colors[i].green +
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colormap->colors[i].blue)/3;
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}
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ioctl(gdk_display->fd, FBIOPUTCMAP, &fbc);
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break;
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case GDK_VISUAL_PSEUDO_COLOR:
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for (i = 0; i < ncolors; i++)
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{
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red[i] = colormap->colors[i].red;
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green[i] = colormap->colors[i].green;
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blue[i] = colormap->colors[i].blue;
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}
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ioctl(gdk_display->fd, FBIOPUTCMAP, &fbc);
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break;
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default:
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break;
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}
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}
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gboolean
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gdk_color_parse (const gchar *spec,
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GdkColor *color)
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{
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char aline[512];
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FILE *fh;
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g_return_val_if_fail(spec, FALSE);
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g_return_val_if_fail(color, FALSE);
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if(spec[0] == '#')
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{
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if(strlen(spec) == 7)
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{
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guint num;
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sscanf(spec + 1, "%x", &num);
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color->red = (num & 0xFF0000) >> 8;
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color->green = (num & 0xFF00);
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color->blue = (num & 0xFF) << 8;
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}
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else if(strlen(spec) == 13)
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{
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char s1[5], s2[5], s3[5];
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g_snprintf(s1, sizeof(s1), spec + 1);
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g_snprintf(s2, sizeof(s2), spec + 5);
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g_snprintf(s3, sizeof(s3), spec + 9);
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if(!sscanf(s1, "%hx", &color->red))
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g_error("sscanf failed");
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if(!sscanf(s2, "%hx", &color->green))
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g_error("sscanf failed");
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if(!sscanf(s3, "%hx", &color->blue))
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g_error("sscanf failed");
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}
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else
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{
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g_warning("Couldn't parse color specifier `%s'", spec);
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return FALSE;
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}
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return TRUE;
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}
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else
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{
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fh = fopen("/usr/lib/X11/rgb.txt", "r");
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if(!fh)
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return FALSE;
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while(fgets(aline, sizeof(aline), fh))
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{
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int red, green, blue;
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char *ctmp;
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g_strstrip(aline);
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if(!aline[0] || aline[0] == '#' || aline[0] == '!')
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continue;
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ctmp = strtok(aline, " \t");
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if(!ctmp)
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continue;
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red = atoi(ctmp);
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ctmp = strtok(NULL, " \t");
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if(!ctmp)
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continue;
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green = atoi(ctmp);
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ctmp = strtok(NULL, " \t");
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if(!ctmp)
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continue;
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blue = atoi(ctmp);
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ctmp = strtok(NULL, " \t");
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if(!ctmp || strcmp(ctmp, spec))
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continue;
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color->red = red << 8;
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color->green = green << 8;
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color->blue = blue << 8;
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return TRUE;
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}
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fclose(fh);
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}
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return FALSE;
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}
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void
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gdk_colormap_free_colors (GdkColormap *colormap,
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GdkColor *colors,
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gint ncolors)
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{
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GdkColormapPrivateFB *private;
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gint i;
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g_return_if_fail (colormap != NULL);
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g_return_if_fail (colors != NULL);
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private = (GdkColormapPrivateFB*) colormap;
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if ((private->base.visual->type != GDK_VISUAL_PSEUDO_COLOR) &&
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(private->base.visual->type != GDK_VISUAL_GRAYSCALE))
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return;
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for (i=0; i<ncolors; i++)
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{
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gulong pixel = colors[i].pixel;
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if (private->info[pixel].ref_count)
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{
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private->info[pixel].ref_count--;
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if (private->info[pixel].ref_count == 0)
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{
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if (!(private->info[pixel].flags & GDK_COLOR_WRITEABLE))
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g_hash_table_remove (private->hash, &colormap->colors[pixel]);
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private->info[pixel].flags = 0;
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}
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}
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}
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}
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/********************
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* Color allocation *
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********************/
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/* Try to allocate a single color using XAllocColor. If it succeeds,
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* cache the result in our colormap, and store in ret.
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*/
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static gboolean
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gdk_colormap_alloc1 (GdkColormap *colormap,
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GdkColor *color,
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GdkColor *ret)
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{
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GdkColormapPrivateFB *private;
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int i;
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private = (GdkColormapPrivateFB*) colormap;
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if(private->base.visual->type != GDK_VISUAL_GRAYSCALE
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&& private->base.visual->type != GDK_VISUAL_PSEUDO_COLOR)
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return FALSE;
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*ret = *color;
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if(!color->red && !color->green && !color->blue) /* black */
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{
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ret->pixel = 0;
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private->info[ret->pixel].ref_count++;
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return TRUE;
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}
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if(color->red == 65535 && color->green == 65535 && color->blue == 65535) /* white */
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{
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ret->pixel = 255;
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private->info[ret->pixel].ref_count++;
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return TRUE;
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}
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for(i = 1; i < (colormap->size - 1); i++)
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{
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if(!private->info[i].ref_count)
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{
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guint16 red = color->red, green = color->green, blue = color->blue;
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struct fb_cmap fbc;
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fbc.len = 1;
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fbc.start = i;
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fbc.red = &red;
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fbc.green = &green;
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fbc.blue = &blue;
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ioctl(gdk_display->fd, FBIOPUTCMAP, &fbc);
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ret->pixel = i;
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colormap->colors[ret->pixel] = *ret;
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private->info[ret->pixel].ref_count = 1;
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g_hash_table_insert (private->hash,
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&colormap->colors[ret->pixel],
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&colormap->colors[ret->pixel]);
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return TRUE;
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}
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}
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return FALSE;
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}
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static gint
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gdk_colormap_alloc_colors_shared (GdkColormap *colormap,
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GdkColor *colors,
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gint ncolors,
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gboolean writeable,
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gboolean best_match,
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gboolean *success)
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{
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GdkColormapPrivateFB *private;
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gint i, index;
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gint nremaining = 0;
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gint nfailed = 0;
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private = (GdkColormapPrivateFB*) colormap;
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index = -1;
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for (i=0; i<ncolors; i++)
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{
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if (!success[i])
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{
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if (gdk_colormap_alloc1 (colormap, &colors[i], &colors[i]))
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success[i] = TRUE;
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else
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nremaining++;
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}
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}
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if (nremaining > 0 && best_match)
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{
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gchar *available = g_new (gchar, colormap->size);
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for (i = 0; i < colormap->size; i++)
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available[i] = ((private->info[i].ref_count == 0) ||
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!(private->info[i].flags && GDK_COLOR_WRITEABLE));
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while (nremaining > 0)
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{
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for (i=0; i<ncolors; i++)
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{
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if (!success[i])
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{
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index = gdk_colormap_match_color (colormap, &colors[i], available);
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if (index != -1)
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{
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if (private->info[index].ref_count)
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{
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private->info[index].ref_count++;
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colors[i] = colormap->colors[index];
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success[i] = TRUE;
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nremaining--;
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}
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else
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{
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if (gdk_colormap_alloc1 (colormap,
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&colormap->colors[index],
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&colors[i]))
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{
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success[i] = TRUE;
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nremaining--;
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break;
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}
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else
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{
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available[index] = FALSE;
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}
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}
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}
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else
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{
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nfailed++;
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nremaining--;
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success[i] = 2; /* flag as permanent failure */
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}
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}
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}
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}
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g_free (available);
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}
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/* Change back the values we flagged as permanent failures */
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if (nfailed > 0)
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{
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for (i=0; i<ncolors; i++)
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if (success[i] == 2)
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success[i] = FALSE;
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nremaining = nfailed;
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}
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return (ncolors - nremaining);
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}
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static gint
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gdk_colormap_alloc_colors_pseudocolor (GdkColormap *colormap,
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GdkColor *colors,
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gint ncolors,
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gboolean writeable,
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gboolean best_match,
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gboolean *success)
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{
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GdkColormapPrivateFB *private;
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GdkColor *lookup_color;
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gint i;
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gint nremaining = 0;
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private = (GdkColormapPrivateFB*) colormap;
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|
|
/* Check for an exact match among previously allocated colors */
|
|
|
|
for (i=0; i<ncolors; i++)
|
|
{
|
|
if (!success[i])
|
|
{
|
|
lookup_color = g_hash_table_lookup (private->hash, &colors[i]);
|
|
if (lookup_color)
|
|
{
|
|
private->info[lookup_color->pixel].ref_count++;
|
|
colors[i].pixel = lookup_color->pixel;
|
|
success[i] = TRUE;
|
|
}
|
|
else
|
|
nremaining++;
|
|
}
|
|
}
|
|
|
|
/* If that failed, we try to allocate a new color, or approxmiate
|
|
* with what we can get if best_match is TRUE.
|
|
*/
|
|
if (nremaining > 0)
|
|
return gdk_colormap_alloc_colors_shared (colormap, colors, ncolors, writeable, best_match, success);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
gint
|
|
gdk_colormap_alloc_colors (GdkColormap *colormap,
|
|
GdkColor *colors,
|
|
gint ncolors,
|
|
gboolean writeable,
|
|
gboolean best_match,
|
|
gboolean *success)
|
|
{
|
|
GdkColormapPrivateFB *private;
|
|
GdkVisual *visual;
|
|
gint i;
|
|
gint nremaining = 0;
|
|
|
|
g_return_val_if_fail (colormap != NULL, FALSE);
|
|
g_return_val_if_fail (colors != NULL, FALSE);
|
|
|
|
private = (GdkColormapPrivateFB*) colormap;
|
|
|
|
for (i=0; i<ncolors; i++)
|
|
success[i] = FALSE;
|
|
|
|
switch (private->base.visual->type)
|
|
{
|
|
case GDK_VISUAL_PSEUDO_COLOR:
|
|
case GDK_VISUAL_GRAYSCALE:
|
|
case GDK_VISUAL_STATIC_GRAY:
|
|
case GDK_VISUAL_STATIC_COLOR:
|
|
return gdk_colormap_alloc_colors_pseudocolor (colormap, colors, ncolors,
|
|
writeable, best_match, success);
|
|
break;
|
|
|
|
case GDK_VISUAL_DIRECT_COLOR:
|
|
case GDK_VISUAL_TRUE_COLOR:
|
|
visual = private->base.visual;
|
|
|
|
for (i=0; i<ncolors; i++)
|
|
{
|
|
colors[i].pixel = (((colors[i].red >> (16 - visual->red_prec)) << visual->red_shift) +
|
|
((colors[i].green >> (16 - visual->green_prec)) << visual->green_shift) +
|
|
((colors[i].blue >> (16 - visual->blue_prec)) << visual->blue_shift));
|
|
success[i] = TRUE;
|
|
}
|
|
break;
|
|
}
|
|
return nremaining;
|
|
}
|
|
|
|
gboolean
|
|
gdk_color_change (GdkColormap *colormap,
|
|
GdkColor *color)
|
|
{
|
|
GdkColormapPrivateFB *private;
|
|
struct fb_cmap fbc = {0, 1};
|
|
|
|
g_return_val_if_fail (colormap != NULL, FALSE);
|
|
g_return_val_if_fail (color != NULL, FALSE);
|
|
|
|
private = (GdkColormapPrivateFB*) colormap;
|
|
|
|
switch(private->base.visual->type)
|
|
{
|
|
case GDK_VISUAL_GRAYSCALE:
|
|
color->red = color->green = color->blue = (color->red + color->green + color->blue)/3;
|
|
|
|
case GDK_VISUAL_PSEUDO_COLOR:
|
|
fbc.start = color->pixel;
|
|
fbc.red = &color->red;
|
|
fbc.green = &color->green;
|
|
fbc.blue = &color->blue;
|
|
ioctl(gdk_display->fd, FBIOPUTCMAP, &fbc);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gint
|
|
gdk_colormap_match_color (GdkColormap *cmap,
|
|
GdkColor *color,
|
|
const gchar *available)
|
|
{
|
|
GdkColor *colors;
|
|
guint sum, max;
|
|
gint rdiff, gdiff, bdiff;
|
|
gint i, index;
|
|
|
|
g_return_val_if_fail (cmap != NULL, 0);
|
|
g_return_val_if_fail (color != NULL, 0);
|
|
|
|
colors = cmap->colors;
|
|
max = 3 * (65536);
|
|
index = -1;
|
|
|
|
for (i = 0; i < cmap->size; i++)
|
|
{
|
|
if ((!available) || (available && available[i]))
|
|
{
|
|
rdiff = (color->red - colors[i].red);
|
|
gdiff = (color->green - colors[i].green);
|
|
bdiff = (color->blue - colors[i].blue);
|
|
|
|
sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
|
|
|
|
if (sum < max)
|
|
{
|
|
index = i;
|
|
max = sum;
|
|
}
|
|
}
|
|
}
|
|
|
|
return index;
|
|
}
|
|
|
|
gint gdk_colors_alloc (GdkColormap *colormap,
|
|
gboolean contiguous,
|
|
gulong *planes,
|
|
gint nplanes,
|
|
gulong *pixels,
|
|
gint npixels)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
gdk_colors_free (GdkColormap *colormap,
|
|
gulong *pixels,
|
|
gint npixels,
|
|
gulong planes)
|
|
{
|
|
}
|
|
|
|
gulong
|
|
gdk_color_context_get_pixel(GdkColorContext *cc,
|
|
gushort red,
|
|
gushort green,
|
|
gushort blue,
|
|
gint *failed)
|
|
{
|
|
g_error("NYI");
|
|
|
|
return 0;
|
|
}
|
|
|
|
GdkColorContext *
|
|
gdk_color_context_new(GdkVisual *visual,
|
|
GdkColormap *colormap)
|
|
{
|
|
g_error("NYI");
|
|
|
|
return NULL;
|
|
}
|
|
|
|
GdkColorContext *
|
|
gdk_color_context_new_mono(GdkVisual *visual,
|
|
GdkColormap *colormap)
|
|
{
|
|
g_error("NYI");
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
gdk_color_context_free(GdkColorContext *cc)
|
|
{
|
|
g_error("NYI");
|
|
}
|
|
|
|
gint
|
|
gdk_color_context_query_color(GdkColorContext *cc,
|
|
GdkColor *color)
|
|
{
|
|
g_error("NYI");
|
|
|
|
return 0;
|
|
}
|