src/colormap.c

   1 /* colormap.c - colormap handling code
   2  *
   3  *  Window Maker 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  *  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
  28 #include "wconfig.h"
  29
  30 #include "WindowMaker.h"
  31 #include <X11/Xatom.h>
  32 #include "window.h"
  33
  34
  35 #include "framewin.h"
  36 void
  37 wColormapInstallForWindow(WScreen *scr, WWindow *wwin)
  38 {
  39     int i;
  40     XWindowAttributes attributes;
  41     int done = 0;
  42     Window xwin = None;
  43
  44
  45     if (wwin) {
  46         xwin = wwin->client_win;
  47     } else {
  48         xwin = scr->root_win;
  49     }
  50
  51     scr->cmap_window = wwin;
  52
  53     if (scr->root_colormap_install_count > 0) {
  54         scr->original_cmap_window = wwin;
  55         return;
  56     }
  57
  58     /* install colormap for all windows of the client */
  59     if (wwin && wwin->cmap_window_no > 0 && wwin->cmap_windows) {
  60         for (i = wwin->cmap_window_no - 1; i >= 0; i--) {
  61             Window w;
  62
  63             w = wwin->cmap_windows[i];
  64             if (w == wwin->client_win)
  65                 done = 1;
  66
  67             XGetWindowAttributes(dpy, w, &attributes);
  68             if (attributes.colormap == None)
  69                 attributes.colormap = scr->colormap;
  70
  71             if (scr->current_colormap != attributes.colormap) {
  72                 scr->current_colormap = attributes.colormap;
  73                 /*
  74                  * ICCCM 2.0: some client requested permission
  75                  * to install colormaps by itself and we granted.
  76                  * So, we can't install any colormaps.
  77                  */
  78                 if (!scr->flags.colormap_stuff_blocked)
  79                     XInstallColormap(dpy, attributes.colormap);
  80             }
  81         }
  82     }
  83
  84     if (!done) {
  85         attributes.colormap = None;
  86         if (xwin != None)
  87             XGetWindowAttributes(dpy, xwin, &attributes);
  88         if (attributes.colormap == None)
  89             attributes.colormap = scr->colormap;
  90
  91         if (scr->current_colormap != attributes.colormap) {
  92             scr->current_colormap = attributes.colormap;
  93             if (!scr->flags.colormap_stuff_blocked)
  94                 XInstallColormap(dpy, attributes.colormap);
  95         }
  96     }
  97     XSync(dpy, False);
  98 }
  99
 100
 101 void
 102 wColormapInstallRoot(WScreen *scr)
 103 {
 104     if (scr->root_colormap_install_count == 0) {
 105         wColormapInstallForWindow(scr, NULL);
 106         scr->original_cmap_window = scr->cmap_window;
 107     }
 108     scr->root_colormap_install_count++;
 109 }
 110
 111
 112 void
 113 wColormapUninstallRoot(WScreen *scr)
 114 {
 115     if (scr->root_colormap_install_count > 0)
 116         scr->root_colormap_install_count--;
 117
 118     if (scr->root_colormap_install_count == 0) {
 119         wColormapInstallForWindow(scr, scr->original_cmap_window);
 120         scr->original_cmap_window = NULL;
 121     }
 122 }
 123
 124
 125 void
 126 wColormapAllowClientInstallation(WScreen *scr, Bool starting)
 127 {
 128     scr->flags.colormap_stuff_blocked = starting;
 129     /*
 130      * Client stopped managing the colormap stuff. Restore the colormap
 131      * that would be installed if the client did not request colormap
 132      * stuff.
 133      */
 134     if (!starting) {
 135         XInstallColormap(dpy, scr->current_colormap);
 136         XSync(dpy, False);
 137     }
 138 }