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 #include "rendercolor.hh"
  11
  12 extern "C" {
  13 #include <X11/Xutil.h>
  14 }
  15
  16 namespace otk {
  17
  18 Surface::Surface(int screen, const Point &size)
  19   : _screen(screen),
  20     _size(size),
  21     _pixmap(None),
  22     _xftdraw(0)
  23 {
  24 }
  25
  26 Surface::~Surface()
  27 {
  28   destroyObjects();
  29 }
  30
  31 void Surface::setPixmap(const RenderColor &color)
  32 {
  33   if (_pixmap == None)
  34     createObjects();
  35
  36   XFillRectangle(**display, _pixmap, color.gc(), 0, 0,
  37                  _size.x(), _size.y());
  38 }
  39
  40 void Surface::setPixmap(XImage *image)
  41 {
  42   assert(image->width == _size.x());
  43   assert(image->height == _size.y());
  44
  45   if (_pixmap == None)
  46     createObjects();
  47
  48   XPutImage(**display, _pixmap, DefaultGC(**display, _screen),
  49             image, 0, 0, 0, 0, _size.x(), _size.y());
  50 }
  51
  52 void Surface::createObjects()
  53 {
  54   assert(_pixmap == None); assert(!_xftdraw);
  55
  56   const ScreenInfo *info = display->screenInfo(_screen);
  57
  58   _pixmap = XCreatePixmap(**display, info->rootWindow(),
  59                           _size.x(), _size.y(), info->depth());
  60   assert(_pixmap != None);
  61
  62   _xftdraw = XftDrawCreate(**display, _pixmap,
  63                            info->visual(), info->colormap());
  64   assert(_xftdraw);
  65 }
  66
  67 void Surface::destroyObjects()
  68 {
  69   if (_xftdraw) {
  70     XftDrawDestroy(_xftdraw);
  71     _xftdraw = 0;
  72   }
  73
  74   if (_pixmap != None) {
  75     XFreePixmap(**display, _pixmap);
  76     _pixmap = None;
  77   }
  78 }
  79
  80 }