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/* This file contains the fillcolor method, which is a GNU extension to
libplot. It sets a drawing attribute: the fill color of objects created
in the following drawing operations. Actually the true fill color (if
filling is not disabled) will be a desaturated version of the
user-specified fill color. The desaturation level is set by invoking
filltype().
In principle we support 48-bit color (16 bits, i.e. 0x0000 through
0xffff, for each of red, green, and blue). */
#include "sys-defines.h"
#include "plot.h"
#include "extern.h"
int
#ifdef _HAVE_PROTOS
_g_fillcolor (int red, int green, int blue)
#else
_g_fillcolor (red, green, blue)
int red, green, blue;
#endif
{
if (!_plotter->open)
{
_plotter->error ("fillcolor: invalid operation");
return -1;
}
if (_plotter->drawstate->PointsInLine > 0
|| _plotter->drawstate->arc_stashed)
_plotter->endpath(); /* flush polyline if any */
if ((red > 0xffff) || (green > 0xffff) || (blue > 0xffff))
/* OOB switches to default */
{
red = _plotter->default_drawstate->fillcolor.red;
green = _plotter->default_drawstate->fillcolor.green;
blue = _plotter->default_drawstate->fillcolor.blue;
}
/* save our notion of fillcolor */
_plotter->drawstate->fillcolor.red = red;
_plotter->drawstate->fillcolor.green = green;
_plotter->drawstate->fillcolor.blue = blue;
return 0;
}
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