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

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #include "config.h"
   4
   5 #include "surface.hh"
   6 #include "display.hh"
   7 #include "screeninfo.hh"
   8 #include "rendercolor.hh"
   9
  10 extern "C" {
  11 #include <X11/Xutil.h>
  12 }
  13
  14 namespace otk {
  15
  16 Surface::Surface(int screen, const Size &size)
  17   : _screen(screen),
  18     _size(size),
  19     _pixmap(None),
  20     _xftdraw(0)
  21 {
  22 }
  23
  24 Surface::~Surface()
  25 {
  26   destroyObjects();
  27 }
  28
  29 void Surface::setPixmap(const RenderColor &color)
  30 {
  31   if (_pixmap == None)
  32     createObjects();
  33
  34   XFillRectangle(**display, _pixmap, color.gc(), 0, 0,
  35                  _size.width(), _size.height());
  36 }
  37
  38 void Surface::setPixmap(XImage *image)
  39 {
  40   assert(image->width == _size.width());
  41   assert(image->height == _size.height());
  42
  43   if (_pixmap == None)
  44     createObjects();
  45
  46   XPutImage(**display, _pixmap, DefaultGC(**display, _screen),
  47             image, 0, 0, 0, 0, _size.width(), _size.height());
  48 }
  49
  50 void Surface::createObjects()
  51 {
  52   assert(_pixmap == None); assert(!_xftdraw);
  53
  54   const ScreenInfo *info = display->screenInfo(_screen);
  55
  56   _pixmap = XCreatePixmap(**display, info->rootWindow(),
  57                           _size.width(), _size.height(), info->depth());
  58   assert(_pixmap != None);
  59
  60   _xftdraw = XftDrawCreate(**display, _pixmap,
  61                            info->visual(), info->colormap());
  62   assert(_xftdraw);
  63 }
  64
  65 void Surface::destroyObjects()
  66 {
  67   if (_xftdraw) {
  68     XftDrawDestroy(_xftdraw);
  69     _xftdraw = 0;
  70   }
  71
  72   if (_pixmap != None) {
  73     XFreePixmap(**display, _pixmap);
  74     _pixmap = None;
  75   }
  76 }
  77
  78 }