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
  31 #include "window.h"
  32 #include "framewin.h"
  33 #include "colormap.h"
  34
  35
  36 void 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 && wwin->cmap_windows) {
  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                                 /*
  72                                  * ICCCM 2.0: some client requested permission
  73                                  * to install colormaps by itself and we granted.
  74                                  * So, we can't install any colormaps.
  75                                  */
  76                                 if (!scr->flags.colormap_stuff_blocked)
  77                                         XInstallColormap(dpy, attributes.colormap);
  78                         }
  79                 }
  80         }
  81
  82         if (!done) {
  83                 attributes.colormap = None;
  84                 if (xwin != None)
  85                         XGetWindowAttributes(dpy, xwin, &attributes);
  86                 if (attributes.colormap == None)
  87                         attributes.colormap = scr->colormap;
  88
  89                 if (scr->current_colormap != attributes.colormap) {
  90                         scr->current_colormap = attributes.colormap;
  91                         if (!scr->flags.colormap_stuff_blocked)
  92                                 XInstallColormap(dpy, attributes.colormap);
  93                 }
  94         }
  95         XSync(dpy, False);
  96 }
  97
  98 void wColormapAllowClientInstallation(WScreen * scr, Bool starting)
  99 {
 100         scr->flags.colormap_stuff_blocked = starting;
 101         /*
 102          * Client stopped managing the colormap stuff. Restore the colormap
 103          * that would be installed if the client did not request colormap
 104          * stuff.
 105          */
 106         if (!starting) {
 107                 XInstallColormap(dpy, scr->current_colormap);
 108                 XSync(dpy, False);
 109         }
 110 }