143 lines
3.5 KiB
C
143 lines
3.5 KiB
C
/*
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* Copyright (c) 1986, 1987, 1988, 1989 by Sun Microsystems, Inc.
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* Permission to use, copy, modify, and distribute this software for any
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* purpose and without fee is hereby granted, provided that the above
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* copyright notice appear in all copies and that both that copyright
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* notice and this permission notice are retained, and that the name
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* of Sun Microsystems, Inc., not be used in advertising or publicity
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* pertaining to this software without specific, written prior permission.
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* Sun Microsystems, Inc., makes no representations about the suitability
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* of this software or the interface defined in this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)cmapshared.c 1.1 94/10/31 SMI 1986";
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#endif
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/*
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* Copyright 1986, Sun Microsystems, Inc.
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*/
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#include <sys/file.h>
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#include <errno.h>
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#include <sunwindow/window_hs.h>
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#include <sunwindow/cms.h>
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#include <sunwindow/cms_rgb.h>
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static int windownotactive;
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typedef int (*PFI)(); /* pointer to function returning int */
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static PFI wmgr_errorcached;
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extern PFI win_errorhandler();
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/*
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* _core_sharedcmap accesses all windows on a specified device and if they
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* have a colormap of specified name, returns the colormap. An error(0) return
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* results if no windows have the named colormap or there are no windows.
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*/
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_core_sharedcmap(wfd, name, dcms, dcmap)
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int wfd;
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char *name;
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struct colormapseg *dcms;
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struct cms_map *dcmap;
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{
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char winname[WIN_NAMESIZE];
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int testwfd, winnumber, satisfied = 0;
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struct screen screen, newscreen;
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struct colormapseg scms;
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struct cms_map cmap;
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extern int errno;
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/*
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* Get the base screen
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*/
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(void)win_screenget(wfd, &screen);
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cmap.cm_red = cmap.cm_green = cmap.cm_blue = 0;
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/*
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* Find window numbers associated with wfd's device.
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*/
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for (winnumber = 0; 1; winnumber++) {
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int screenget_error();
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/*
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* Open window.
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*/
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(void)win_numbertoname(winnumber, winname);
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if ((testwfd = open(winname, O_RDONLY, 0)) < 0) {
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if (errno == ENXIO || errno == ENOENT)
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break; /* Last window passed. */
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goto badopen;
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}
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/*
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* Get window's device name (if active).
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*/
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wmgr_errorcached = win_errorhandler(screenget_error);
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windownotactive = 0;
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(void)win_screenget(testwfd, &newscreen);
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if (windownotactive) {
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(void)close(testwfd);
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continue;
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}
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(void)win_errorhandler(wmgr_errorcached);
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/*
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* Is this window on the same screen
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*/
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if (strncmp(screen.scr_fbname, newscreen.scr_fbname,
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SCR_NAMESIZE) == 0) {
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/*
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* Does it have the named colormap
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*/
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(void)win_getcms(testwfd, &scms, &cmap);
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if (strncmp(name, scms.cms_name, CMS_NAMESIZE) == 0) {
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(void)win_getcms(testwfd, &scms, dcmap);
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if (dcms)
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*dcms = scms;
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satisfied = 1;
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(void)close(testwfd);
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break;
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}
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}
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(void)close(testwfd);
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}
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return (satisfied);
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badopen:
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return (0);
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}
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screenget_error(errnum, winopnum)
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int errnum, winopnum;
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{
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switch (errnum) {
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case 0:
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return;
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case -1:
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if (errno == ESPIPE) {
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windownotactive = 1;
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return;
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}
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}
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wmgr_errorcached(errnum, winopnum);
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return;
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}
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_core_standardcmap(name, cms, cmap)
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char *name;
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struct colormapseg *cms;
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struct cms_map *cmap;
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{
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if (strncmp(name, "rgb", CMS_NAMESIZE) == 0) {
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if (cms)
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cms->cms_size = CMS_RGBSIZE;
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if (cmap) {
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cms_rgbsetup(cmap->cm_red, cmap->cm_green, cmap->cm_blue);
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}
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return (1);
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}
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return (0);
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}
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