void GiCanvasIos::clearCachedBitmap(bool clearAll)
{
giInterlockedIncrement(&m_draw->_cacheserr[0]);
if (clearAll) {
giInterlockedIncrement(&m_draw->_cacheserr[1]);
}
}
bool GiGraphics::beginPaint(GiCanvas* canvas, const RECT_2D& clipBox)
{
if (!canvas || m_impl->canvas || m_impl->drawRefcnt > 0) {
return false;
}
m_impl->canvas = canvas;
m_impl->ctxused = 0;
m_impl->stopping = 0;
giInterlockedIncrement(&m_impl->drawRefcnt);
if (m_impl->lastZoomTimes != xf().getZoomTimes()) {
m_impl->zoomChanged();
m_impl->lastZoomTimes = xf().getZoomTimes();
}
m_impl->clipBox0 = clipBox;
if (Box2d(clipBox).isEmpty()) {
(xf().getWndRectW() * xf().worldToDisplay()).get(m_impl->clipBox0);
}
m_impl->clipBox = m_impl->clipBox0;
m_impl->rectDraw = m_impl->clipBox0;
m_impl->rectDraw.inflate(GiGraphicsImpl::CLIP_INFLATE);
m_impl->rectDrawM = Box2d(m_impl->rectDraw) * xf().displayToModel();
m_impl->rectDrawMaxM = xf().getWndRectM();
m_impl->rectDrawW = m_impl->rectDrawM * xf().modelToWorld();
m_impl->rectDrawMaxW = m_impl->rectDrawMaxM * xf().modelToWorld();
return true;
}
void MgShapeDoc::afterChanged()
{
giInterlockedIncrement(&im->changeCount);
for (std::vector<Impl::Observer>::iterator it = im->observers.begin();
it != im->observers.end(); ++it)
{
(it->first)(this, it->second, false);
}
}
bool MgLockRW::lock(bool forWrite, int timeout)
{
bool ret = false;
if (1 == giInterlockedIncrement(_counts)) { // first locked
giInterlockedIncrement(_counts + (forWrite ? 2 : 1));
ret = true;
}
else {
ret = !forWrite && 0 == _counts[2]; // for read and not locked for write
for (int i = 0; i < timeout && !ret; i += 25) {
giSleep(25);
ret = forWrite ? (!_counts[1] && !_counts[2]) : !_counts[2];
}
if (ret) {
giInterlockedIncrement(_counts + (forWrite ? 2 : 1));
}
else {
giInterlockedDecrement(_counts);
}
}
return ret;
}
void GiGraphics::_beginPaint(const RECT2D& clipBox)
{
if (m_impl->lastZoomTimes != xf().getZoomTimes())
{
m_impl->zoomChanged();
m_impl->lastZoomTimes = xf().getZoomTimes();
}
giInterlockedIncrement(&m_impl->drawRefcnt);
if (!Box2d(clipBox).isEmpty())
{
m_impl->clipBox0 = clipBox;
m_impl->clipBox = clipBox;
m_impl->rectDraw = Box2d(clipBox);
m_impl->rectDraw.inflate(GiGraphicsImpl::CLIP_INFLATE);
m_impl->rectDrawM = m_impl->rectDraw * xf().displayToModel();
m_impl->rectDrawMaxM = Box2d(0, 0, xf().getWidth(), xf().getHeight()) * xf().displayToModel();
m_impl->rectDrawW = m_impl->rectDrawM * xf().modelToWorld();
m_impl->rectDrawMaxW = m_impl->rectDrawMaxM * xf().modelToWorld();
}
}
void zoomChanged()
{
giInterlockedIncrement(&zoomTimes);
}
void GiGraphics::stopDrawing()
{
giInterlockedIncrement(&m_impl->stopping);
}
void MgShapeDoc::addRef()
{
giInterlockedIncrement(&im->refcount);
}