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43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
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/* Metacity RGB color stuff */
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/*
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* Copyright (C) 2001 Havoc Pennington
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* 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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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#include "colors.h"
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gulong
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meta_screen_get_x_pixel (MetaScreen *screen,
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const PangoColor *color)
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{
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#define INTENSITY(r, g, b) ((r) * 0.30 + (g) * 0.59 + (b) * 0.11)
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double r, g, b;
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r = color->red / (double) 0xffff;
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g = color->green / (double) 0xffff;
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b = color->blue / (double) 0xffff;
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/* Now this is a low-bloat GdkRGB replacement! */
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if (INTENSITY (r, g, b) > 0.5)
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return WhitePixel (screen->display->xdisplay, screen->number);
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else
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return BlackPixel (screen->display->xdisplay, screen->number);
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#undef INTENSITY
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}
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