From f4092abdf94af6a99aff944d6264bc1284e8bdd4 Mon Sep 17 00:00:00 2001 From: Reinhard Tartler Date: Mon, 10 Oct 2011 17:43:39 +0200 Subject: Imported nx-X11-3.1.0-1.tar.gz Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository --- nx-X11/lib/Xmu/LookupCmap.c | 325 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 325 insertions(+) create mode 100644 nx-X11/lib/Xmu/LookupCmap.c (limited to 'nx-X11/lib/Xmu/LookupCmap.c') diff --git a/nx-X11/lib/Xmu/LookupCmap.c b/nx-X11/lib/Xmu/LookupCmap.c new file mode 100644 index 000000000..e7d7008e5 --- /dev/null +++ b/nx-X11/lib/Xmu/LookupCmap.c @@ -0,0 +1,325 @@ +/* $Xorg: LookupCmap.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/LookupCmap.c,v 1.7 2001/07/25 15:04:50 dawes Exp $ */ + +/* + * Author: Donna Converse, MIT X Consortium + */ + +#ifdef HAVE_CONFIG_H +#include +#endif +#include +#include +#include +#include +#include +#include + +/* + * Prototypes + */ +static Status lookup(Display*, int, VisualID, Atom, XStandardColormap*, Bool); + +/* + * To create a standard colormap if one does not currently exist, or + * replace the currently existing standard colormap, use + * XmuLookupStandardColormap(). + * + * Given a screen, a visual, and a property, XmuLookupStandardColormap() + * will determine the best allocation for the property under the specified + * visual, and determine the whether to create a new colormap or to use + * the default colormap of the screen. It will call XmuStandardColormap() + * to create the standard colormap. + * + * If replace is true, any previous definition of the property will be + * replaced. If retain is true, the property and the colormap will be + * made permanent for the duration of the server session. However, + * pre-existing property definitions which are not replaced cannot be made + * permanent by a call to XmuLookupStandardColormap(); a request to retain + * resources pertains to newly created resources. + * + * Returns 0 on failure, non-zero on success. A request to create a + * standard colormap upon a visual which cannot support such a map is + * considered a failure. An example of this would be requesting any + * standard colormap property on a monochrome visual, or, requesting an + * RGB_BEST_MAP on a display whose colormap size is 16. + */ + +Status +XmuLookupStandardColormap(Display *dpy, int screen, VisualID visualid, + unsigned int depth, Atom property, + Bool replace, Bool retain) + /* + * dpy - specifies X server connection + * screen - specifies screen of display + * visualid - specifies the visual type + * depth - specifies the visual type + * property - a standard colormap property + * replace - specifies whether to replace + * retain - specifies whether to retain + */ +{ + Display *odpy; /* original display connection */ + XStandardColormap *colormap; + XVisualInfo vinfo_template, *vinfo; /* visual */ + long vinfo_mask; + unsigned long r_max, g_max, b_max; /* allocation */ + int count; + Colormap cmap; /* colormap ID */ + Status status = 0; + + + /* Match the requested visual */ + + vinfo_template.visualid = visualid; + vinfo_template.screen = screen; + vinfo_template.depth = depth; + vinfo_mask = VisualIDMask | VisualScreenMask | VisualDepthMask; + if ((vinfo = XGetVisualInfo(dpy, vinfo_mask, &vinfo_template, &count)) == + NULL) + return 0; + + /* Monochrome visuals have no standard maps */ + + if (vinfo->colormap_size <= 2) { + XFree((char *) vinfo); + return 0; + } + + /* If the requested property already exists on this screen, and, + * if the replace flag has not been set to true, return success. + * lookup() will remove a pre-existing map if replace is true. + */ + + if (lookup(dpy, screen, visualid, property, (XStandardColormap *) NULL, + replace) && !replace) { + XFree((char *) vinfo); + return 1; + } + + /* Determine the best allocation for this property under the requested + * visualid and depth, and determine whether or not to use the default + * colormap of the screen. + */ + + if (!XmuGetColormapAllocation(vinfo, property, &r_max, &g_max, &b_max)) { + XFree((char *) vinfo); + return 0; + } + + cmap = (property == XA_RGB_DEFAULT_MAP && + visualid == XVisualIDFromVisual(DefaultVisual(dpy, screen))) + ? DefaultColormap(dpy, screen) : None; + + /* If retaining resources, open a new connection to the same server */ + + if (retain) { + odpy = dpy; + if ((dpy = XOpenDisplay(XDisplayString(odpy))) == NULL) { + XFree((char *) vinfo); + return 0; + } + } + + /* Create the standard colormap */ + + colormap = XmuStandardColormap(dpy, screen, visualid, depth, property, + cmap, r_max, g_max, b_max); + + /* Set the standard colormap property */ + + if (colormap) { + XGrabServer(dpy); + + if (lookup(dpy, screen, visualid, property, colormap, replace) && + !replace) { + /* Someone has defined the property since we last looked. + * Since we will not replace it, release our own resources. + * If this is the default map, our allocations will be freed + * when this connection closes. + */ + if (colormap->killid == ReleaseByFreeingColormap) + XFreeColormap(dpy, colormap->colormap); + } + else if (retain) { + XSetCloseDownMode(dpy, RetainPermanent); + } + XUngrabServer(dpy); + XFree((char *) colormap); + status = 1; + } + + if (retain) + XCloseDisplay(dpy); + XFree((char *) vinfo); + return status; +} + +/***************************************************************************/ + +/* Lookup a standard colormap property. If the property is RGB_DEFAULT_MAP, + * the visualid is used to determine whether the indicated standard colormap + * exists. If the map exists and replace is true, delete the resources used + * by the map and remove the property. Return true if the map exists, + * or did exist and was deleted; return false if the map was not found. + * + * Note that this is not the way that a Status return is normally used. + * + * If new is not NULL, new points to an XStandardColormap structure which + * describes a standard colormap of the specified property. It will be made + * a standard colormap of the screen if none already exists, or if replace + * is true. + */ + +static Status +lookup(Display *dpy, int screen, VisualID visualid, Atom property, + XStandardColormap *cnew, Bool replace) + /* + * dpy - specifies display connection + * screen - specifies screen number + * visualid - specifies visualid for std map + * property - specifies colormap property name + * cnew - specifies a standard colormap + * replace - specifies whether to replace + */ +{ + register int i; + int count; + XStandardColormap *stdcmaps, *s; + Window win = RootWindow(dpy, screen); + + /* The property does not already exist */ + + if (! XGetRGBColormaps(dpy, win, &stdcmaps, &count, property)) { + if (cnew) + XSetRGBColormaps(dpy, win, cnew, 1, property); + return 0; + } + + /* The property exists and is not describing the RGB_DEFAULT_MAP */ + + if (property != XA_RGB_DEFAULT_MAP) { + if (replace) { + XmuDeleteStandardColormap(dpy, screen, property); + if (cnew) + XSetRGBColormaps(dpy, win, cnew, 1, property); + } + XFree((char *)stdcmaps); + return 1; + } + + /* The property exists and is RGB_DEFAULT_MAP */ + + for (i=0, s=stdcmaps; (i < count) && (s->visualid != visualid); i++, s++) + ; + + /* No RGB_DEFAULT_MAP property matches the given visualid */ + + if (i == count) { + if (cnew) { + XStandardColormap *m, *maps; + + s = (XStandardColormap *) malloc((unsigned) ((count+1) * sizeof + (XStandardColormap))); + + for (i = 0, m = s, maps = stdcmaps; i < count; i++, m++, maps++) { + m->colormap = maps->colormap; + m->red_max = maps->red_max; + m->red_mult = maps->red_mult; + m->green_max = maps->green_max; + m->green_mult = maps->green_mult; + m->blue_max = maps->blue_max; + m->blue_mult = maps->blue_mult; + m->base_pixel = maps->base_pixel; + m->visualid = maps->visualid; + m->killid = maps->killid; + } + m->colormap = cnew->colormap; + m->red_max = cnew->red_max; + m->red_mult = cnew->red_mult; + m->green_max = cnew->green_max; + m->green_mult = cnew->green_mult; + m->blue_max = cnew->blue_max; + m->blue_mult = cnew->blue_mult; + m->base_pixel = cnew->base_pixel; + m->visualid = cnew->visualid; + m->killid = cnew->killid; + + XSetRGBColormaps(dpy, win, s, ++count, property); + free((char *) s); + } + XFree((char *) stdcmaps); + return 0; + } + + /* Found an RGB_DEFAULT_MAP property with a matching visualid */ + + if (replace) { + /* Free old resources first - we may need them, particularly in + * the default colormap of the screen. However, because of this, + * it is possible that we will destroy the old resource and fail + * to create a new one if XmuStandardColormap() fails. + */ + + if (count == 1) { + XmuDeleteStandardColormap(dpy, screen, property); + if (cnew) + XSetRGBColormaps(dpy, win, cnew, 1, property); + } + else { + XStandardColormap *map; + + /* s still points to the matching standard colormap */ + + if (s->killid == ReleaseByFreeingColormap) { + if ((s->colormap != None) && + (s->colormap != DefaultColormap(dpy, screen))) + XFreeColormap(dpy, s->colormap); + } + else if (s->killid != None) + XKillClient(dpy, s->killid); + + map = (cnew) ? cnew : stdcmaps + --count; + + s->colormap = map->colormap; + s->red_max = map->red_max; + s->red_mult = map->red_mult; + s->green_max = map->green_max; + s->green_mult = map->green_mult; + s->blue_max = map->blue_max; + s->blue_mult = map->blue_mult; + s->visualid = map->visualid; + s->killid = map->killid; + + XSetRGBColormaps(dpy, win, stdcmaps, count, property); + } + } + XFree((char *) stdcmaps); + return 1; +} -- cgit v1.2.3