Mercurial > sdl-ios-xcode
diff src/video/Xext/XmuStdCmap/VisCmap.c @ 2185:2032348afed1
This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is
available and to keep people form having to install yet another library I have added the essential parts of Xmu in
src/video/extensions/XmuStdCmap and an include file in src/video/extensions. The support makes use of standard X11 mechanisms to
create color maps and make sure that an application uses the same color map for each window/visual combination. This should make it
possible for gamma support to be implemented based on a single color map per application.
Hurm... it looks like "make indent" modified a few extra files. Those are getting committed too.
author | Bob Pendleton <bob@pendleton.com> |
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date | Thu, 12 Jul 2007 20:00:50 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/video/Xext/XmuStdCmap/VisCmap.c Thu Jul 12 20:00:50 2007 +0000 @@ -0,0 +1,184 @@ +/* $Xorg: VisCmap.c,v 1.4 2001/02/09 02:03:53 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/VisCmap.c,v 1.6 2001/01/17 19:42:57 dawes Exp $ */ + +/* + * Author: Donna Converse, MIT X Consortium + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <stdio.h> +#include <math.h> +#include <X11/Xlib.h> +#include <X11/Xatom.h> +#include <X11/Xutil.h> +#include "../extensions/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(Display * dpy, int screen, VisualID visualid, + unsigned int depth, Bool replace, Bool retain) + /* + * dpy - specifies server connection + * screen - specifies screen number + * visualid - specifies the visual + * depth - specifies the visual + * replace specifies - whether to replace + * retain - specifies whether to retain + */ +{ + Status status; + int n; + long vinfo_mask; + XVisualInfo vinfo_template, *vinfo; + + status = 0; + 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; + /*FALLTHROUGH*/ 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; +}