Dogcows Code - chaz/openbox/blob - otk/surface.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #ifdef    HAVE_CONFIG_H
   4 #  include "../config.h"
   5 #endif // HAVE_CONFIG_H
   6
   7 #include "surface.hh"
   8 #include "display.hh"
   9 #include "screeninfo.hh"
  10
  11 extern "C" {
  12 #include <X11/Xutil.h>
  13 }
  14
  15 namespace otk {
  16
  17 Surface::Surface(int screen)
  18   : _screen(screen),
  19     _size(1, 1),
  20     _pm(None),
  21     _xftdraw(0)
  22 {
  23   createObjects();
  24 }
  25
  26 Surface::Surface(int screen, const Point &size)
  27   : _screen(screen),
  28     _size(size),
  29     _pm(None),
  30     _xftdraw(0)
  31 {
  32   createObjects();
  33 }
  34
  35 Surface::~Surface()
  36 {
  37   destroyObjects();
  38 }
  39
  40 void Surface::createObjects()
  41 {
  42   assert(_pm == None); assert(!_xftdraw);
  43
  44   const ScreenInfo *info = display->screenInfo(_screen);
  45
  46   _pm = XCreatePixmap(**display, info->rootWindow(), _size.x(), _size.y(),
  47                       info->depth());
  48
  49   _xftdraw = XftDrawCreate(**display, _pm, info->visual(), info->colormap());
  50 }
  51
  52 void Surface::destroyObjects()
  53 {
  54   assert(_pm != None); assert(_xftdraw);
  55
  56   XftDrawDestroy(_xftdraw);
  57   _xftdraw = 0;
  58
  59   XFreePixmap(**display, _pm);
  60   _pm = None;
  61 }
  62
  63 void Surface::setSize(int w, int h)
  64 {
  65   if (w == _size.x() && h == _size.y()) return; // no change
  66
  67   _size.setPoint(w, h);
  68   destroyObjects();
  69   createObjects();
  70 }
  71
  72 }