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-rw-r--r--libX11/src/GetRGBCMap.c136
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diff --git a/libX11/src/GetRGBCMap.c b/libX11/src/GetRGBCMap.c
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+++ b/libX11/src/GetRGBCMap.c
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+/* $Xorg: GetRGBCMap.c,v 1.4 2001/02/09 02:03:33 xorgcvs Exp $ */
+
+/*
+
+Copyright 1987, 1998 The Open Group
+
+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.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <X11/Xlibint.h>
+#include <X11/Xutil.h>
+#include "Xatomtype.h"
+#include <X11/Xatom.h>
+
+Status XGetRGBColormaps (
+ Display *dpy,
+ Window w,
+ XStandardColormap **stdcmap, /* RETURN */
+ int *count, /* RETURN */
+ Atom property) /* XA_RGB_BEST_MAP, etc. */
+{
+ register int i; /* iterator variable */
+ xPropStandardColormap *data = NULL; /* data read in from prop */
+ Atom actual_type; /* how the prop was actually stored */
+ int actual_format; /* ditto */
+ unsigned long leftover; /* how much was left over */
+ unsigned long nitems; /* number of 32bits read */
+ int ncmaps; /* number of structs this makes */
+ Bool old_style = False; /* if was too short */
+ VisualID def_visual = None; /* visual to use if prop too short */
+ XStandardColormap *cmaps; /* return value */
+
+
+ if (XGetWindowProperty (dpy, w, property, 0L, 1000000L, False,
+ XA_RGB_COLOR_MAP, &actual_type, &actual_format,
+ &nitems, &leftover, (unsigned char **)&data)
+ != Success)
+ return False;
+
+ /* if wrong type or format, or too small for us, then punt */
+ if ((actual_type != XA_RGB_COLOR_MAP) || (actual_format != 32) ||
+ (nitems < OldNumPropStandardColormapElements)) {
+ if (data) Xfree ((char *) data);
+ return False;
+ }
+
+ /*
+ * See how many properties were found; if pre-ICCCM then assume
+ * default visual and a kill id of 1.
+ */
+ if (nitems < NumPropStandardColormapElements) {
+ ncmaps = 1;
+ old_style = True;
+ if (nitems < (NumPropStandardColormapElements - 1)) {
+ Screen *sp = _XScreenOfWindow (dpy, w);
+
+ if (!sp) {
+ if (data) Xfree ((char *) data);
+ return False;
+ }
+ def_visual = sp->root_visual->visualid;
+ }
+ } else {
+ /*
+ * make sure we have an integral number of colormaps
+ */
+ ncmaps = (nitems / NumPropStandardColormapElements);
+ if ((((unsigned long) ncmaps) * NumPropStandardColormapElements) !=
+ nitems) {
+ if (data) Xfree ((char *) data);
+ return False;
+ }
+ }
+
+
+ /*
+ * allocate array
+ */
+ cmaps = (XStandardColormap *) Xmalloc (ncmaps *
+ sizeof (XStandardColormap));
+ if (!cmaps) {
+ if (data) Xfree ((char *) data);
+ return False;
+ }
+
+
+ /*
+ * and fill it in, handling compatibility with pre-ICCCM short stdcmaps
+ */
+ {
+ register XStandardColormap *map;
+ register xPropStandardColormap *prop;
+
+ for (i = ncmaps, map = cmaps, prop = data; i > 0; i--, map++, prop++) {
+ map->colormap = prop->colormap;
+ map->red_max = prop->red_max;
+ map->red_mult = prop->red_mult;
+ map->green_max = prop->green_max;
+ map->green_mult = prop->green_mult;
+ map->blue_max = prop->blue_max;
+ map->blue_mult = prop->blue_mult;
+ map->base_pixel = prop->base_pixel;
+ map->visualid = (def_visual ? def_visual : prop->visualid);
+ map->killid = (old_style ? None : prop->killid);
+ }
+ }
+ Xfree ((char *) data);
+ *stdcmap = cmaps;
+ *count = ncmaps;
+ return True;
+}
+