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/* $XConsortium: VisCmap.c,v 1.9 89/07/16 18:10:43 jim Exp $
*
* Copyright 1989 by the Massachusetts Institute of Technology
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted, 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 M.I.T. not be used in advertising
* or publicity pertaining to distribution of the software without specific,
* written prior permission. M.I.T. makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* M.I.T. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL M.I.T.
* 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.
*
* Author: Donna Converse, MIT X Consortium
*/
#include <stdio.h>
#include <math.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
#include <X11/Xmu/StdCmap.h>
/*
* To create all of the appropriate standard colormaps for a given visual on
* a given screen, use XmuVisualStandardColormaps.
*
* Define all appropriate standard colormap properties for the given visual.
* If replace is true, any previous definition will be removed.
* If retain is true, new properties will be retained for the duration of
* the server session. Return 0 on failure, non-zero on success.
* On failure, no new properties will be defined, and, old ones may have
* been removed if replace was True.
*
* Not all standard colormaps are meaningful to all visual classes. This
* routine will check and define the following properties for the following
* classes, provided that the size of the colormap is not too small.
*
* DirectColor and PseudoColor
* RGB_DEFAULT_MAP
* RGB_BEST_MAP
* RGB_RED_MAP
* RGB_GREEN_MAP
* RGB_BLUE_MAP
* RGB_GRAY_MAP
*
* TrueColor and StaticColor
* RGB_BEST_MAP
*
* GrayScale and StaticGray
* RGB_GRAY_MAP
*/
Status XmuVisualStandardColormaps(dpy, screen, visualid, depth, replace,
retain)
Display *dpy; /* specifies server connection */
int screen; /* specifies screen number */
VisualID visualid; /* specifies the visual */
unsigned int depth; /* specifies the visual */
Bool replace; /* specifies whether to replace */
Bool retain; /* specifies whether to retain */
{
Status status;
int n;
long vinfo_mask;
XVisualInfo vinfo_template, *vinfo;
vinfo_template.screen = screen;
vinfo_template.visualid = visualid;
vinfo_template.depth = depth;
vinfo_mask = VisualScreenMask | VisualIDMask | VisualDepthMask;
if ((vinfo = XGetVisualInfo(dpy, vinfo_mask, &vinfo_template, &n)) == NULL)
return 0;
if (vinfo->colormap_size <= 2) {
/* Monochrome visuals have no standard maps; considered successful */
XFree((char *) vinfo);
return 1;
}
switch (vinfo->class)
{
case PseudoColor:
case DirectColor:
status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
XA_RGB_DEFAULT_MAP, replace,retain);
if (!status) break;
status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
XA_RGB_GRAY_MAP, replace, retain);
if (!status) {
XmuDeleteStandardColormap(dpy, screen, XA_RGB_DEFAULT_MAP);
break;
}
status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
XA_RGB_RED_MAP, replace, retain);
if (!status) {
XmuDeleteStandardColormap(dpy, screen, XA_RGB_DEFAULT_MAP);
XmuDeleteStandardColormap(dpy, screen, XA_RGB_GRAY_MAP);
break;
}
status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
XA_RGB_GREEN_MAP, replace, retain);
if (!status) {
XmuDeleteStandardColormap(dpy, screen, XA_RGB_DEFAULT_MAP);
XmuDeleteStandardColormap(dpy, screen, XA_RGB_GRAY_MAP);
XmuDeleteStandardColormap(dpy, screen, XA_RGB_RED_MAP);
break;
}
status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
XA_RGB_BLUE_MAP, replace, retain);
if (!status) {
XmuDeleteStandardColormap(dpy, screen, XA_RGB_DEFAULT_MAP);
XmuDeleteStandardColormap(dpy, screen, XA_RGB_GRAY_MAP);
XmuDeleteStandardColormap(dpy, screen, XA_RGB_RED_MAP);
XmuDeleteStandardColormap(dpy, screen, XA_RGB_GREEN_MAP);
break;
}
/* fall through */
case StaticColor:
case TrueColor:
status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
XA_RGB_BEST_MAP, replace, retain);
if (!status && (vinfo->class == PseudoColor ||
vinfo->class == DirectColor)) {
XmuDeleteStandardColormap(dpy, screen, XA_RGB_DEFAULT_MAP);
XmuDeleteStandardColormap(dpy, screen, XA_RGB_GRAY_MAP);
XmuDeleteStandardColormap(dpy, screen, XA_RGB_RED_MAP);
XmuDeleteStandardColormap(dpy, screen, XA_RGB_GREEN_MAP);
XmuDeleteStandardColormap(dpy, screen, XA_RGB_BLUE_MAP);
}
break;
/* the end for PseudoColor, DirectColor, StaticColor, and TrueColor */
case GrayScale:
status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
XA_RGB_DEFAULT_MAP, replace,
retain);
if (! status) break;
/* fall through */
case StaticGray:
status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
XA_RGB_GRAY_MAP, replace, retain);
if (! status && vinfo->class == GrayScale) {
XmuDeleteStandardColormap(dpy, screen, XA_RGB_DEFAULT_MAP);
break;
}
}
XFree((char *) vinfo);
return status;
}
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