QPreviewPaintEngine::QPreviewPaintEngine()
: QPaintEngine(*(new QPreviewPaintEnginePrivate), PaintEngineFeatures(AllFeatures & ~ObjectBoundingModeGradients))
{
Q_D(QPreviewPaintEngine);
d->proxy_print_engine = 0;
d->proxy_paint_engine = 0;
}
void QAlphaPaintEngine::flushAndInit(bool init)
{
Q_D(QAlphaPaintEngine);
Q_ASSERT(d->m_pass == 0);
if (d->m_pic) {
d->m_picpainter->end();
// set clip region
d->m_alphargn = d->m_alphargn.intersected(QRect(0, 0, d->m_pdev->width(), d->m_pdev->height()));
// just use the bounding rect if it's a complex region..
QVector<QRect> rects = d->m_alphargn.rects();
if (rects.size() > 10) {
QRect br = d->m_alphargn.boundingRect();
d->m_alphargn = QRegion(br);
rects.clear();
rects.append(br);
}
d->m_cliprgn = d->m_alphargn;
// now replay the QPicture
++d->m_pass; // we are now doing pass #2
// reset states
gccaps = d->m_savedcaps;
painter()->save();
d->resetState(painter());
// make sure the output from QPicture is unscaled
QTransform mtx;
mtx.scale(1.0f / (qreal(d->m_pdev->logicalDpiX()) / qreal(qt_defaultDpiX())),
1.0f / (qreal(d->m_pdev->logicalDpiY()) / qreal(qt_defaultDpiY())));
painter()->setTransform(mtx);
painter()->drawPicture(0, 0, *d->m_pic);
d->m_cliprgn = QRegion();
d->resetState(painter());
// fill in the alpha images
for (int i=0; i<rects.size(); ++i)
d->drawAlphaImage(rects.at(i));
d->m_alphargn = QRegion();
painter()->restore();
--d->m_pass; // pass #2 finished
cleanUp();
}
if (init) {
gccaps = PaintEngineFeatures(AllFeatures & ~QPaintEngine::ObjectBoundingModeGradients);
d->m_pic = new QPicture();
d->m_pic->d_ptr->in_memory_only = true;
d->m_picpainter = new QPainter(d->m_pic);
d->m_picengine = d->m_picpainter->paintEngine();
// When newPage() is called and the m_picpainter is recreated
// we have to copy the current state of the original printer
// painter back to the m_picpainter
d->m_picpainter->setPen(painter()->pen());
d->m_picpainter->setBrush(painter()->brush());
d->m_picpainter->setBrushOrigin(painter()->brushOrigin());
d->m_picpainter->setFont(painter()->font());
d->m_picpainter->setOpacity(painter()->opacity());
d->m_picpainter->setTransform(painter()->combinedTransform());
d->m_picengine->syncState();
QPainterState &state = *d->m_picpainter->d_func()->state;
QPainter *oldPainter = state.painter;
state = *painter()->d_func()->state;
state.painter = oldPainter;
}
}