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- /* $XConsortium: VisCmap.c,v 1.10 89/10/08 15:05:47 rws 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;
- }
-