void PaintWidget::paintTo(const QRect &dirtyRect, QPainter &painter)
{
painter.setRenderHint(QPainter::SmoothPixmapTransform, true);
painter.setRenderHint(QPainter::Antialiasing, true);
//painter.setRenderHint(QPainter::HighQualityAntialiasing, true);
//draw screenshot if enabled
if(drawScreenhot_)
{
painter.save();
auto size = painter.viewport().size();
QSize s = screenshot_.size();
QRect r = calcDrawArea(s, size);
painter.drawPixmap(r,screenshot_);
painter.restore();
}
//draw pdf if available
if(drawPdf_ && pdfDocument_)
{
QSize s(4, 3);
QRect area = calcDrawArea(s, painter.viewport().size());
//std::cout << area.x() << ' ' << area.y() << ' ' << area.width() << ' ' << area.height() << std::endl;
painter.drawImage(area, pdfImage_);
}
painter.save();
//draw the overlay image
auto size = this->size();
painter.scale( (qreal)size.width() / (qreal)overlayImage_.width(), (qreal)size.height() / (qreal)overlayImage_.height());
painter.drawImage(dirtyRect, overlayImage_, dirtyRect);
//draw temporary stuff
if(isPainting_ && paintTool_ == PaintToolType::Rectangle)
{
QColor color(pen_.color());
color.setAlpha(100);
painter.fillRect(rectTool, color);
}
painter.restore();
}
void ViewportWidget::resizeEvent(QResizeEvent *event) {
Q_UNUSED(event);
Q_ASSERT(this->parentWidget());
this->resize(calcDrawArea(this->parentWidget()->width(),
this->parentWidget()->height()));
this->setGeometry(this->parentWidget()->width() / 2 - this->width() / 2,
this->parentWidget()->height() / 2 - this->height() / 2,
this->width(), this->height());
/* This if fb filling background draw is wanted instead of buildPane()
_pixelRatio = (qreal)this->width() / (qreal)SCREEN_WIDTH;
*/
buildPane();
}
// update the pdf image
void PaintWidget::updatePdfPageImage()
{
if(pdfDocument_ == nullptr)
return;
//TODO calculate right dpi for output size
auto page = pdfDocument_->page(pdfCurrentPage_);
auto size = page->pageSize(); //page size in points, 72 dpi == each point one pixel
auto rect = calcDrawArea(size, outputSize_); //scale up to size
//extract factor
float xfactor = 72.0 * ((qreal)rect.width()/(qreal)size.width());
float yfactor = 72.0 * ((qreal)rect.height()/(qreal)size.height());
pdfImage_ = page->renderToImage(xfactor, yfactor);
delete page;
}
