diff options
Diffstat (limited to 'libXmu/src/VisCmap.c')
| -rw-r--r-- | libXmu/src/VisCmap.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/libXmu/src/VisCmap.c b/libXmu/src/VisCmap.c new file mode 100644 index 000000000..54022cc9a --- /dev/null +++ b/libXmu/src/VisCmap.c @@ -0,0 +1,183 @@ +/* $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 <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(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; +} |