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/*
* $XFree86$
*
* Copyright © 2002 Keith Packard, member of The XFree86 Project, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include "Xrenderint.h"
Status
XRenderParseColor(Display *dpy, char *spec, XRenderColor *def)
{
if (!strncmp (spec, "rgba:", 5))
{
unsigned short elements[4];
unsigned short *pShort;
int i, n;
char c;
spec += 5;
/*
* Attempt to parse the value portion.
*/
pShort = elements;
for (i = 0; i < 4; i++, pShort++, spec++) {
n = 0;
*pShort = 0;
while (*spec != '/' && *spec != '\0') {
if (++n > 4) {
return 0;
}
c = *spec++;
*pShort <<= 4;
if (c >= '0' && c <= '9')
*pShort |= c - '0';
/* assume string in lowercase
else if (c >= 'A' && c <= 'F')
*pShort |= c - ('A' - 10);
*/
else if (c >= 'a' && c <= 'f')
*pShort |= c - ('a' - 10);
else return 0;
}
if (n == 0)
return 0;
if (n < 4) {
*pShort = ((unsigned long)*pShort * 0xFFFF) / ((1 << n*4) - 1);
}
}
def->red = elements[0];
def->green = elements[1];
def->blue = elements[2];
def->alpha = elements[3];
}
else
{
XColor coreColor;
Colormap colormap;
colormap = DefaultColormap (dpy, DefaultScreen (dpy));
if (!XParseColor (dpy, colormap, spec, &coreColor))
return 0;
def->red = coreColor.red;
def->green = coreColor.green;
def->blue = coreColor.blue;
def->alpha = 0xffff;
}
def->red = (def->red * def->alpha) / 65535;
def->green = (def->green * def->alpha) / 65535;
def->blue = (def->blue * def->alpha) / 65535;
return 1;
}
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