otk/surface.cc (raw)
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// -*- 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); XftDrawDestroy(_xftdraw); _xftdraw = 0; XFreePixmap(**display, _pm); _pm = None; // do the delete ourselves cuz we alloc it with new not malloc delete [] _im->data; _im->data = NULL; XDestroyImage(_im); _im = 0; } void Surface::setSize(int w, int h) { if (w == _size.x() && h == _size.y()) return; // no change _size.setPoint(w, h); destroyObjects(); createObjects(); } } |