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/* This file is part of the GNU plotutils package. Copyright (C) 1995,
1996, 1997, 1998, 1999, 2000, 2005, 2008, Free Software Foundation, Inc.
The GNU plotutils package is free software. You may redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software foundation; either version 2, or (at your
option) any later version.
The GNU plotutils package 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
General Public License for more details.
You should have received a copy of the GNU General Public License along
with the GNU plotutils package; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin St., Fifth Floor,
Boston, MA 02110-1301, USA. */
#include "sys-defines.h"
#include "extern.h"
#define NUM_SVG_COLORNAMES 16
static const plColorNameInfo _svg_colornames[NUM_SVG_COLORNAMES + 1] =
{
{"aqua", 0x00, 0xff, 0xff},
{"black", 0x00, 0x00, 0x00},
{"blue", 0x00, 0x00, 0xff},
{"fuchsia", 0xff, 0x00, 0xff},
{"gray", 0x80, 0x80, 0x80},
{"green", 0x00, 0x80, 0x00},
{"lime", 0x00, 0xff, 0x00},
{"maroon", 0x80, 0x00, 0x00},
{"navy", 0x00, 0x00, 0x80},
{"olive", 0x80, 0x80, 0x00},
{"purple", 0x80, 0x00, 0x80},
{"red", 0xff, 0x00, 0x00},
{"silver", 0xc0, 0xc0, 0xc0},
{"teal", 0x00, 0x80, 0x80},
{"white", 0xff, 0xff, 0xff},
{"yellow", 0xff, 0xff, 0x00},
{NULL, 0, 0, 0}
};
/* convert a 48-bit libplot color to a string resembling "#ffffff" for SVG;
may also return a string in our database of SVG's builtin colors */
const char *
_libplot_color_to_svg_color (plColor color_48, char charbuf[8])
{
plColor color_24;
int i;
bool found = false;
const char *svg_color;
color_24.red = ((unsigned int)color_48.red) >> 8;
color_24.green = ((unsigned int)color_48.green) >> 8;
color_24.blue = ((unsigned int)color_48.blue) >> 8;
for (i = 0; i < NUM_SVG_COLORNAMES; i++)
{
if (color_24.red == _svg_colornames[i].red
&& color_24.green == _svg_colornames[i].green
&& color_24.blue == _svg_colornames[i].blue)
{
found = true;
break;
}
}
if (found)
svg_color = _svg_colornames[i].name;
else
{
sprintf (charbuf, "#%02x%02x%02x",
color_24.red, color_24.green, color_24.blue);
svg_color = charbuf;
}
return svg_color;
}
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