otk/surface.cc (raw)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 |
// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
#ifdef HAVE_CONFIG_H
# include "../config.h"
#endif // HAVE_CONFIG_H
#include "surface.hh"
#include "display.hh"
#include "screeninfo.hh"
extern "C" {
#include <X11/Xutil.h>
}
namespace otk {
Surface::Surface(int screen)
: _screen(screen),
_size(1, 1),
_im(0),
_pm(None),
_xftdraw(0)
{
createObjects();
}
Surface::Surface(int screen, const Point &size)
: _screen(screen),
_size(size),
_im(0),
_pm(None),
_xftdraw(0)
{
createObjects();
}
Surface::~Surface()
{
destroyObjects();
}
void Surface::createObjects()
{
assert(!_im); assert(_pm == None); assert(!_xftdraw);
const ScreenInfo *info = display->screenInfo(_screen);
_im = XCreateImage(**display, info->visual(), info->depth(),
ZPixmap, 0, NULL, _size.x(), _size.y(), 32, 0);
_pm = XCreatePixmap(**display, info->rootWindow(), _size.x(), _size.y(),
info->depth());
_xftdraw = XftDrawCreate(**display, _pm, info->visual(), info->colormap());
}
void Surface::destroyObjects()
{
assert(_im); assert(_pm != None); assert(_xftdraw);
// do the delete ourselves cuz we alloc it with new not malloc
delete [] _im->data;
_im->data = NULL;
XDestroyImage(_im);
_im = 0;
XFreePixmap(**display, _pm);
_pm = None;
XftDrawDestroy(_xftdraw);
_xftdraw = 0;
}
void Surface::setSize(int w, int h)
{
if (w == _size.x() && h == _size.y()) return; // no change
_size.setPoint(w, h);
destroyObjects();
createObjects();
}
}
|