src/colormap.c

   1 /* colormap.c - colormap handling code
   2  *
   3  *  WindowMaker window manager
   4  *
   5  *  Copyright (c) 1998 Alfredo K. Kojima
   6  *
   7  *  This code slightly based on fvwm code,
   8  *  Copyright (c) Rob Nation and others
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  23  *  USA.
  24  */
  25
  26
  27 #include "wconfig.h"
  28
  29 #include "WindowMaker.h"
  30 #include <X11/Xatom.h>
  31 #include "window.h"
  32
  33
  34
  35 void
  36 wColormapInstallForWindow(WScreen *scr, WWindow *wwin)
  37 {
  38     int i;
  39     XWindowAttributes attributes;
  40     int done = 0;
  41     Window xwin = None;
  42
  43     if(wwin) {
  44         xwin = wwin->client_win;
  45     } else {
  46         xwin = scr->root_win;
  47     }
  48
  49     scr->cmap_window = wwin;
  50
  51     if (scr->root_colormap_install_count > 0) {
  52         scr->original_cmap_window = wwin;
  53         return;
  54     }
  55
  56     /* install colormap for all windows of the client */
  57     if (wwin && wwin->cmap_window_no > 0) {
  58         for (i = wwin->cmap_window_no - 1; i >= 0; i--) {
  59             Window w;
  60
  61             w = wwin->cmap_windows[i];
  62             if (w == wwin->client_win)
  63                 done = 1;
  64
  65             XGetWindowAttributes(dpy, w, &attributes);
  66             if (attributes.colormap == None)
  67                 attributes.colormap = scr->colormap;
  68
  69             if (scr->current_colormap != attributes.colormap) {
  70                 scr->current_colormap = attributes.colormap;
  71                 XInstallColormap(dpy, attributes.colormap);
  72             }
  73         }
  74     }
  75
  76     if (!done) {
  77         XGetWindowAttributes(dpy, xwin, &attributes);
  78         if (attributes.colormap == None)
  79             attributes.colormap = scr->colormap;
  80
  81         if (scr->current_colormap != attributes.colormap) {
  82             scr->current_colormap = attributes.colormap;
  83             XInstallColormap(dpy, attributes.colormap);
  84         }
  85     }
  86 }
  87
  88
  89 void
  90 wColormapInstallRoot(WScreen *scr)
  91 {
  92     if (scr->root_colormap_install_count == 0) {
  93         wColormapInstallForWindow(scr, NULL);
  94         scr->original_cmap_window = scr->cmap_window;
  95     }
  96     scr->root_colormap_install_count++;
  97 }
  98
  99
 100 void
 101 wColormapUninstallRoot(WScreen *scr)
 102 {
 103     if (scr->root_colormap_install_count > 0)
 104         scr->root_colormap_install_count--;
 105
 106     if (scr->root_colormap_install_count == 0) {
 107         wColormapInstallForWindow(scr, scr->original_cmap_window);
 108         scr->original_cmap_window = NULL;
 109     }
 110 }
 111