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
  22  *  along with this program; if not, write to the Free Software
  23  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  24  *  USA.
  25  */
  26
  27 #include "wconfig.h"
  28
  29 #include "WindowMaker.h"
  30 #include <X11/Xatom.h>
  31 #include "window.h"
  32
  33 #include "framewin.h"
  34 void wColormapInstallForWindow(WScreen * scr, WWindow * wwin)
  35 {
  36         int i;
  37         XWindowAttributes attributes;
  38         int done = 0;
  39         Window xwin = None;
  40
  41         if (wwin) {
  42                 xwin = wwin->client_win;
  43         } else {
  44                 xwin = scr->root_win;
  45         }
  46
  47         scr->cmap_window = wwin;
  48
  49         if (scr->root_colormap_install_count > 0) {
  50                 scr->original_cmap_window = wwin;
  51                 return;
  52         }
  53
  54         /* install colormap for all windows of the client */
  55         if (wwin && wwin->cmap_window_no > 0 && wwin->cmap_windows) {
  56                 for (i = wwin->cmap_window_no - 1; i >= 0; i--) {
  57                         Window w;
  58
  59                         w = wwin->cmap_windows[i];
  60                         if (w == wwin->client_win)
  61                                 done = 1;
  62
  63                         XGetWindowAttributes(dpy, w, &attributes);
  64                         if (attributes.colormap == None)
  65                                 attributes.colormap = scr->colormap;
  66
  67                         if (scr->current_colormap != attributes.colormap) {
  68                                 scr->current_colormap = attributes.colormap;
  69                                 /*
  70                                  * ICCCM 2.0: some client requested permission
  71                                  * to install colormaps by itself and we granted.
  72                                  * So, we can't install any colormaps.
  73                                  */
  74                                 if (!scr->flags.colormap_stuff_blocked)
  75                                         XInstallColormap(dpy, attributes.colormap);
  76                         }
  77                 }
  78         }
  79
  80         if (!done) {
  81                 attributes.colormap = None;
  82                 if (xwin != None)
  83                         XGetWindowAttributes(dpy, xwin, &attributes);
  84                 if (attributes.colormap == None)
  85                         attributes.colormap = scr->colormap;
  86
  87                 if (scr->current_colormap != attributes.colormap) {
  88                         scr->current_colormap = attributes.colormap;
  89                         if (!scr->flags.colormap_stuff_blocked)
  90                                 XInstallColormap(dpy, attributes.colormap);
  91                 }
  92         }
  93         XSync(dpy, False);
  94 }
  95
  96 void wColormapInstallRoot(WScreen * scr)
  97 {
  98         if (scr->root_colormap_install_count == 0) {
  99                 wColormapInstallForWindow(scr, NULL);
 100                 scr->original_cmap_window = scr->cmap_window;
 101         }
 102         scr->root_colormap_install_count++;
 103 }
 104
 105 void wColormapUninstallRoot(WScreen * scr)
 106 {
 107         if (scr->root_colormap_install_count > 0)
 108                 scr->root_colormap_install_count--;
 109
 110         if (scr->root_colormap_install_count == 0) {
 111                 wColormapInstallForWindow(scr, scr->original_cmap_window);
 112                 scr->original_cmap_window = NULL;
 113         }
 114 }
 115
 116 void wColormapAllowClientInstallation(WScreen * scr, Bool starting)
 117 {
 118         scr->flags.colormap_stuff_blocked = starting;
 119         /*
 120          * Client stopped managing the colormap stuff. Restore the colormap
 121          * that would be installed if the client did not request colormap
 122          * stuff.
 123          */
 124         if (!starting) {
 125                 XInstallColormap(dpy, scr->current_colormap);
 126                 XSync(dpy, False);
 127         }
 128 }