Dogcows Code - chaz/openbox/blob - src/XScreen.cc

   1 // XScreen.cc for Openbox
   2 // Copyright (c) 2002 - 2002 Ben Janens (ben at orodu.net)
   3 //
   4 // Permission is hereby granted, free of charge, to any person obtaining a
   5 // copy of this software and associated documentation files (the "Software"),
   6 // to deal in the Software without restriction, including without limitation
   7 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 // and/or sell copies of the Software, and to permit persons to whom the
   9 // Software is furnished to do so, subject to the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be included in
  12 // all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20 // DEALINGS IN THE SOFTWARE.
  21
  22 #include <X11/Xutil.h>
  23 #include "XScreen.h"
  24 #include "XDisplay.h"
  25 #include "Geometry.h"
  26
  27 XScreen::XScreen(const XDisplay *display, const unsigned int number) {
  28   _display = display->_display;
  29   _number = number;
  30
  31   _root = RootWindow(_display, _number);
  32   _size = Size(WidthOfScreen(ScreenOfDisplay(_display, _number)),
  33                HeightOfScreen(ScreenOfDisplay(_display, _number)));
  34   setColorData();
  35 }
  36
  37
  38 XScreen::~XScreen() {
  39 }
  40
  41
  42 /*
  43  * This sets up the _depth, _visual, and _colormap properties.
  44  */
  45 void XScreen::setColorData() {
  46   _depth = DefaultDepth(_display, _number);
  47   _visual = (Visual *) 0;
  48
  49   // search for a TrueColor Visual. If we can't find one, use the default
  50   // visual for the screen
  51   XVisualInfo vinfo_template, *vinfo_return;
  52   int vinfo_nitems;
  53
  54   vinfo_template.screen = _number;
  55   vinfo_template.c_class = TrueColor;
  56
  57   vinfo_return = XGetVisualInfo(_display, VisualScreenMask | VisualClassMask,
  58                                 &vinfo_template, &vinfo_nitems);
  59   if (vinfo_return && vinfo_nitems > 0) {
  60     for (int i = 0; i < vinfo_nitems; i++)
  61       if (_depth < (vinfo_return + i)->depth) {
  62         _depth = (vinfo_return + i)->depth;
  63         _visual = (vinfo_return + i)->visual;
  64       }
  65     XFree(vinfo_return);
  66   }
  67   if (_visual)
  68     _colormap = XCreateColormap(_display, _root, _visual, AllocNone);
  69   else {
  70     _visual = DefaultVisual(_display, _number);
  71     _colormap = DefaultColormap(_display, _number);
  72   }
  73 }
  74
  75
  76 /*
  77  * Creates a window on screen.
  78  */
  79 Window createWindow(Window parent, const Rect &area, int borderw,
  80                     unsigned int winclass, unsigned long attrib_mask,
  81                     XSetWindowAttributes *attrib) const {
  82   return XCreateWindow(_display, parent,
  83                        area.x(), area.y(), area.w(), area.h(),
  84                        borderw, depth(), winclass, visual(),
  85                        attrib_mask, attrib);
  86 }