GetStCmap.c revision 1ab64890 
1/* $Xorg: GetStCmap.c,v 1.4 2001/02/09 02:03:33 xorgcvs Exp $ */
2
3/***********************************************************
4
5Copyright 1987, 1998  The Open Group
6
7Permission to use, copy, modify, distribute, and sell this software and its
8documentation for any purpose is hereby granted without fee, provided that
9the above copyright notice appear in all copies and that both that
10copyright notice and this permission notice appear in supporting
11documentation.
12
13The above copyright notice and this permission notice shall be included in
14all copies or substantial portions of the Software.
15
16THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
19OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
20AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22
23Except as contained in this notice, the name of The Open Group shall not be
24used in advertising or otherwise to promote the sale, use or other dealings
25in this Software without prior written authorization from The Open Group.
26
27
28Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
29
30                        All Rights Reserved
31
32Permission to use, copy, modify, and distribute this software and its
33documentation for any purpose and without fee is hereby granted,
34provided that the above copyright notice appear in all copies and that
35both that copyright notice and this permission notice appear in
36supporting documentation, and that the name of Digital not be
37used in advertising or publicity pertaining to distribution of the
38software without specific, written prior permission.
39
40DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
41ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
42DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
43ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
44WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
45ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
46SOFTWARE.
47
48******************************************************************/
49
50#ifdef HAVE_CONFIG_H
51#include <config.h>
52#endif
53#include <X11/Xlibint.h>
54#include <X11/Xutil.h>
55#include "Xatomtype.h"
56#include <X11/Xatom.h>
57
58/*
59 * 				    WARNING
60 *
61 * This is a pre-ICCCM routine.  It must not reference any of the new fields
62 * in the XStandardColormap structure.
63 */
64
65Status XGetStandardColormap (
66    Display *dpy,
67    Window w,
68    XStandardColormap *cmap,
69    Atom property)		/* XA_RGB_BEST_MAP, etc. */
70{
71    Status stat;			/* return value */
72    XStandardColormap *stdcmaps;	/* will get malloced value */
73    int nstdcmaps;			/* count of above */
74
75    stat = XGetRGBColormaps (dpy, w, &stdcmaps, &nstdcmaps, property);
76    if (stat) {
77	XStandardColormap *use;
78
79	if (nstdcmaps > 1) {
80	    VisualID vid;
81	    Screen *sp = _XScreenOfWindow (dpy, w);
82	    int i;
83
84	    if (!sp) {
85		if (stdcmaps) Xfree ((char *) stdcmaps);
86		return False;
87	    }
88	    vid = sp->root_visual->visualid;
89
90	    for (i = 0; i < nstdcmaps; i++) {
91		if (stdcmaps[i].visualid == vid) break;
92	    }
93
94	    if (i == nstdcmaps) {	/* not found */
95		Xfree ((char *) stdcmaps);
96		return False;
97	    }
98	    use = &stdcmaps[i];
99	} else {
100	    use = stdcmaps;
101	}
102
103	/*
104	 * assign only those fields which were in the pre-ICCCM version
105	 */
106	cmap->colormap	 = use->colormap;
107	cmap->red_max	 = use->red_max;
108	cmap->red_mult	 = use->red_mult;
109	cmap->green_max	 = use->green_max;
110	cmap->green_mult = use->green_mult;
111	cmap->blue_max	 = use->blue_max;
112	cmap->blue_mult	 = use->blue_mult;
113	cmap->base_pixel = use->base_pixel;
114
115	Xfree ((char *) stdcmaps);	/* don't need alloced memory */
116    }
117    return stat;
118}
119