diff options
Diffstat (limited to 'libXmu/src/AllCmap.c')
| -rw-r--r-- | libXmu/src/AllCmap.c | 313 |
1 files changed, 155 insertions, 158 deletions
diff --git a/libXmu/src/AllCmap.c b/libXmu/src/AllCmap.c index 09ae52aa4..1f57b708a 100644 --- a/libXmu/src/AllCmap.c +++ b/libXmu/src/AllCmap.c @@ -1,158 +1,155 @@ -/* $Xorg: AllCmap.c,v 1.4 2001/02/09 02:03:51 xorgcvs Exp $ */ - -/* - -Copyright 1989, 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. - -*/ -/* $XFree86: xc/lib/Xmu/AllCmap.c,v 1.7 2001/01/17 19:42:53 dawes Exp $ */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include <stdio.h> -#include <X11/Xlib.h> -#include <X11/Xatom.h> -#include <X11/Xutil.h> -#include <X11/Xmu/StdCmap.h> - -static XVisualInfo *getDeepestVisual(int, XVisualInfo*, int); - -/* - * To create all of the appropriate standard colormaps for every visual of - * every screen on a given display, use XmuAllStandardColormaps. - * - * Define and retain as permanent resources all standard colormaps which are - * meaningful for the visuals of each screen of the display. Return 0 on - * failure, non-zero on success. If the property of any standard colormap - * is already defined, redefine it. - * - * This interface is intended to be used by window managers or a client - * upon start-up of a session. - * - * The standard colormaps of a screen are defined by properties associated - * with the screen's root window. Each screen has exactly one root window. - * The property names of standard colormaps are predefined, and each property - * name may describe at most one colormap. - * - * The standard colormaps are - * RGB_BEST_MAP - * RGB_RED_MAP - * RGB_GREEN_MAP - * RGB_BLUE_MAP - * RGB_DEFAULT_MAP - * RGB_GRAY_MAP - * - * Therefore a screen may have at most 6 standard colormap properties defined. - * - * A standard colormap is associated with a particular visual of the screen. - * A screen may have multiple visuals defined, including visuals of the same - * class at different depths. Note that a visual id might be repeated for - * more than one depth, so the visual id and the depth of a visual identify - * the visual. The characteristics of the visual will determine which - * standard colormaps are meaningful under that visual, and will determine - * how the standard colormap is defined. Because a standard colormap is - * associated with a specific visual, there must be a method of determining - * which visuals take precedence in defining standard colormaps. - * - * The method used here is: for the visual of greatest depth, define all - * standard colormaps meaningful to that visual class, according to this - * order of (descending) precedence: - * 1. DirectColor - * 2. PseudoColor - * 3. TrueColor and GrayScale - * 4. StaticColor and StaticGray - * - * Allows partial success by screenful. For example, if a map on screen 1 - * fails, the maps on screen 0, created earlier, will remain. However, - * none on screen 1 will remain. If a map on 0 fails, none will remain. - * - * See the comments under XmuVisualStandardColormaps() for notes on which - * standard colormaps are meaningful under these classes of visuals. - */ - -Status -XmuAllStandardColormaps(Display *dpy) -{ - int nvisuals, scr; - Status status; - long vinfo_mask; - XVisualInfo template, *vinfo, *v1, *v2; - - status = 0; - /* for each screen, determine all visuals of this server */ - for (scr=0; scr < ScreenCount(dpy); scr++) - { - template.screen = scr; - vinfo_mask = VisualScreenMask; - vinfo = XGetVisualInfo(dpy, vinfo_mask, &template, &nvisuals); - if (vinfo == NULL) /* unexpected: a screen with no visuals */ - continue; - - v1 = getDeepestVisual(DirectColor, vinfo, nvisuals); - v2 = getDeepestVisual(PseudoColor, vinfo, nvisuals); - - if (v2 && - (!v1 || (v2->colormap_size >= - ((v1->red_mask | v1->green_mask | v1->blue_mask) + 1)))) - status = XmuVisualStandardColormaps(dpy, scr, v2->visualid, - (unsigned) v2->depth, 1, 1); - else if (v1) - status = XmuVisualStandardColormaps(dpy, scr, v1->visualid, - (unsigned) v1->depth, 1, 1); - - else { - if (((v1 = getDeepestVisual(TrueColor, vinfo, nvisuals)) != NULL) - || ((v1 = getDeepestVisual(StaticColor, vinfo, nvisuals)) != - NULL)) - status = XmuVisualStandardColormaps(dpy, scr, v1->visualid, - (unsigned) v1->depth, 1, 1); - if (status && - (((v1 = getDeepestVisual(GrayScale, vinfo, nvisuals)) != NULL) - || ((v1 = getDeepestVisual(StaticGray, vinfo, nvisuals)) != - NULL))) - status = XmuVisualStandardColormaps(dpy, scr, v1->visualid, - (unsigned) v1->depth, 1, 1); - } - XFree ((char *) vinfo); - if (!status) break; - } - return status; -} - -static XVisualInfo * -getDeepestVisual(int visual_class, XVisualInfo *vinfo, int nvisuals) -{ - register int i; - register int maxdepth = 0; - XVisualInfo *v = NULL; - - for (i=0; i < nvisuals; i++, vinfo++) - if (vinfo->class == visual_class && vinfo->depth > maxdepth) - { - maxdepth = vinfo->depth; - v = vinfo; - } - return(v); -} - +/*
+
+Copyright 1989, 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 <stdio.h>
+#include <X11/Xlib.h>
+#include <X11/Xatom.h>
+#include <X11/Xutil.h>
+#include <X11/Xmu/StdCmap.h>
+
+static XVisualInfo *getDeepestVisual(int, XVisualInfo*, int);
+
+/*
+ * To create all of the appropriate standard colormaps for every visual of
+ * every screen on a given display, use XmuAllStandardColormaps.
+ *
+ * Define and retain as permanent resources all standard colormaps which are
+ * meaningful for the visuals of each screen of the display. Return 0 on
+ * failure, non-zero on success. If the property of any standard colormap
+ * is already defined, redefine it.
+ *
+ * This interface is intended to be used by window managers or a client
+ * upon start-up of a session.
+ *
+ * The standard colormaps of a screen are defined by properties associated
+ * with the screen's root window. Each screen has exactly one root window.
+ * The property names of standard colormaps are predefined, and each property
+ * name may describe at most one colormap.
+ *
+ * The standard colormaps are
+ * RGB_BEST_MAP
+ * RGB_RED_MAP
+ * RGB_GREEN_MAP
+ * RGB_BLUE_MAP
+ * RGB_DEFAULT_MAP
+ * RGB_GRAY_MAP
+ *
+ * Therefore a screen may have at most 6 standard colormap properties defined.
+ *
+ * A standard colormap is associated with a particular visual of the screen.
+ * A screen may have multiple visuals defined, including visuals of the same
+ * class at different depths. Note that a visual id might be repeated for
+ * more than one depth, so the visual id and the depth of a visual identify
+ * the visual. The characteristics of the visual will determine which
+ * standard colormaps are meaningful under that visual, and will determine
+ * how the standard colormap is defined. Because a standard colormap is
+ * associated with a specific visual, there must be a method of determining
+ * which visuals take precedence in defining standard colormaps.
+ *
+ * The method used here is: for the visual of greatest depth, define all
+ * standard colormaps meaningful to that visual class, according to this
+ * order of (descending) precedence:
+ * 1. DirectColor
+ * 2. PseudoColor
+ * 3. TrueColor and GrayScale
+ * 4. StaticColor and StaticGray
+ *
+ * Allows partial success by screenful. For example, if a map on screen 1
+ * fails, the maps on screen 0, created earlier, will remain. However,
+ * none on screen 1 will remain. If a map on 0 fails, none will remain.
+ *
+ * See the comments under XmuVisualStandardColormaps() for notes on which
+ * standard colormaps are meaningful under these classes of visuals.
+ */
+
+Status
+XmuAllStandardColormaps(Display *dpy)
+{
+ int nvisuals, scr;
+ Status status;
+ long vinfo_mask;
+ XVisualInfo template, *vinfo, *v1, *v2;
+
+ status = 0;
+ /* for each screen, determine all visuals of this server */
+ for (scr=0; scr < ScreenCount(dpy); scr++)
+ {
+ template.screen = scr;
+ vinfo_mask = VisualScreenMask;
+ vinfo = XGetVisualInfo(dpy, vinfo_mask, &template, &nvisuals);
+ if (vinfo == NULL) /* unexpected: a screen with no visuals */
+ continue;
+
+ v1 = getDeepestVisual(DirectColor, vinfo, nvisuals);
+ v2 = getDeepestVisual(PseudoColor, vinfo, nvisuals);
+
+ if (v2 &&
+ (!v1 || (v2->colormap_size >=
+ ((v1->red_mask | v1->green_mask | v1->blue_mask) + 1))))
+ status = XmuVisualStandardColormaps(dpy, scr, v2->visualid,
+ (unsigned) v2->depth, 1, 1);
+ else if (v1)
+ status = XmuVisualStandardColormaps(dpy, scr, v1->visualid,
+ (unsigned) v1->depth, 1, 1);
+
+ else {
+ if (((v1 = getDeepestVisual(TrueColor, vinfo, nvisuals)) != NULL)
+ || ((v1 = getDeepestVisual(StaticColor, vinfo, nvisuals)) !=
+ NULL))
+ status = XmuVisualStandardColormaps(dpy, scr, v1->visualid,
+ (unsigned) v1->depth, 1, 1);
+ if (status &&
+ (((v1 = getDeepestVisual(GrayScale, vinfo, nvisuals)) != NULL)
+ || ((v1 = getDeepestVisual(StaticGray, vinfo, nvisuals)) !=
+ NULL)))
+ status = XmuVisualStandardColormaps(dpy, scr, v1->visualid,
+ (unsigned) v1->depth, 1, 1);
+ }
+ XFree ((char *) vinfo);
+ if (!status) break;
+ }
+ return status;
+}
+
+static XVisualInfo *
+getDeepestVisual(int visual_class, XVisualInfo *vinfo, int nvisuals)
+{
+ register int i;
+ register int maxdepth = 0;
+ XVisualInfo *v = NULL;
+
+ for (i=0; i < nvisuals; i++, vinfo++)
+ if (vinfo->class == visual_class && vinfo->depth > maxdepth)
+ {
+ maxdepth = vinfo->depth;
+ v = vinfo;
+ }
+ return(v);
+}
+
|