src/colormap.c

   1 /* colormap.c - colormap handling code
   2  *
   3  *  Window Maker window manager
   4  *
   5  *  Copyright (c) 1998-2003 Alfredo K. Kojima
   6  *
   7  *  This code slightly based on fvwm code,
   8  *  Copyright (c) Rob Nation and others
   9  *  but completely rewritten.
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; either version 2 of the License, or
  14  *  (at your option) any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *  GNU General Public License for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License along
  22  *  with this program; if not, write to the Free Software Foundation, Inc.,
  23  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #include "wconfig.h"
  27
  28 #include "WindowMaker.h"
  29 #include <X11/Xatom.h>
  30 #include "window.h"
  31
  32 #include "framewin.h"
  33 void wColormapInstallForWindow(WScreen * scr, WWindow * wwin)
  34 {
  35         int i;
  36         XWindowAttributes attributes;
  37         int done = 0;
  38         Window xwin = None;
  39
  40         if (wwin) {
  41                 xwin = wwin->client_win;
  42         } else {
  43                 xwin = scr->root_win;
  44         }
  45
  46         scr->cmap_window = wwin;
  47
  48         if (scr->root_colormap_install_count > 0) {
  49                 scr->original_cmap_window = wwin;
  50                 return;
  51         }
  52
  53         /* install colormap for all windows of the client */
  54         if (wwin && wwin->cmap_window_no > 0 && wwin->cmap_windows) {
  55                 for (i = wwin->cmap_window_no - 1; i >= 0; i--) {
  56                         Window w;
  57
  58                         w = wwin->cmap_windows[i];
  59                         if (w == wwin->client_win)
  60                                 done = 1;
  61
  62                         XGetWindowAttributes(dpy, w, &attributes);
  63                         if (attributes.colormap == None)
  64                                 attributes.colormap = scr->colormap;
  65
  66                         if (scr->current_colormap != attributes.colormap) {
  67                                 scr->current_colormap = attributes.colormap;
  68                                 /*
  69                                  * ICCCM 2.0: some client requested permission
  70                                  * to install colormaps by itself and we granted.
  71                                  * So, we can't install any colormaps.
  72                                  */
  73                                 if (!scr->flags.colormap_stuff_blocked)
  74                                         XInstallColormap(dpy, attributes.colormap);
  75                         }
  76                 }
  77         }
  78
  79         if (!done) {
  80                 attributes.colormap = None;
  81                 if (xwin != None)
  82                         XGetWindowAttributes(dpy, xwin, &attributes);
  83                 if (attributes.colormap == None)
  84                         attributes.colormap = scr->colormap;
  85
  86                 if (scr->current_colormap != attributes.colormap) {
  87                         scr->current_colormap = attributes.colormap;
  88                         if (!scr->flags.colormap_stuff_blocked)
  89                                 XInstallColormap(dpy, attributes.colormap);
  90                 }
  91         }
  92         XSync(dpy, False);
  93 }
  94
  95 void wColormapInstallRoot(WScreen * scr)
  96 {
  97         if (scr->root_colormap_install_count == 0) {
  98                 wColormapInstallForWindow(scr, NULL);
  99                 scr->original_cmap_window = scr->cmap_window;
 100         }
 101         scr->root_colormap_install_count++;
 102 }
 103
 104 void wColormapUninstallRoot(WScreen * scr)
 105 {
 106         if (scr->root_colormap_install_count > 0)
 107                 scr->root_colormap_install_count--;
 108
 109         if (scr->root_colormap_install_count == 0) {
 110                 wColormapInstallForWindow(scr, scr->original_cmap_window);
 111                 scr->original_cmap_window = NULL;
 112         }
 113 }
 114
 115 void wColormapAllowClientInstallation(WScreen * scr, Bool starting)
 116 {
 117         scr->flags.colormap_stuff_blocked = starting;
 118         /*
 119          * Client stopped managing the colormap stuff. Restore the colormap
 120          * that would be installed if the client did not request colormap
 121          * stuff.
 122          */
 123         if (!starting) {
 124                 XInstallColormap(dpy, scr->current_colormap);
 125                 XSync(dpy, False);
 126         }
 127 }