void UIFrameBufferQImage::paintScale(QPaintEvent *pEvent)
{
/* Scaled image is NULL by default: */
QImage scaledImage;
/* But if scaled-factor is set and current image is NOT null: */
if (m_scaledSize.isValid() && !m_img.isNull())
{
/* We are doing a deep copy of the image to make sure it will not be
* detached during scale process, otherwise we can get a frozen frame-buffer. */
scaledImage = m_img.copy();
/* And scaling the image to predefined scaled-factor: */
scaledImage = scaledImage.scaled(m_scaledSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
}
/* Finally we are choosing image to paint from: */
QImage &sourceImage = scaledImage.isNull() ? m_img : scaledImage;
/* Get rectangle to paint: */
QRect paintRect = pEvent->rect().intersected(sourceImage.rect());
if (paintRect.isEmpty())
return;
/* Create painter: */
QPainter painter(m_pMachineView->viewport());
/* Draw image rectangle depending on rectangle width: */
if ((ulong)paintRect.width() < m_width * 2 / 3)
drawImageRectNarrow(painter, sourceImage,
paintRect, m_pMachineView->contentsX(), m_pMachineView->contentsY());
else
drawImageRectWide(painter, sourceImage,
paintRect, m_pMachineView->contentsX(), m_pMachineView->contentsY());
}
void UIFrameBufferQImage::paintDefault(QPaintEvent *pEvent)
{
/* Get rectangle to paint: */
QRect paintRect = pEvent->rect().intersected(m_img.rect());
if (paintRect.isEmpty())
return;
/* Create painter: */
QPainter painter(m_pMachineView->viewport());
/* Draw image rectangle depending on rectangle width: */
if ((ulong)paintRect.width() < m_width * 2 / 3)
drawImageRectNarrow(painter, m_img,
paintRect, m_pMachineView->contentsX(), m_pMachineView->contentsY());
else
drawImageRectWide(painter, m_img,
paintRect, m_pMachineView->contentsX(), m_pMachineView->contentsY());
}
void UIFrameBufferQImage::paintSeamless(QPaintEvent *pEvent)
{
/* Get rectangle to paint: */
QRect paintRect = pEvent->rect().intersected(m_img.rect());
if (paintRect.isEmpty())
return;
/* Create painter: */
QPainter painter(m_pMachineView->viewport());
/* Clear paint rectangle first: */
painter.setCompositionMode(QPainter::CompositionMode_Clear);
painter.eraseRect(paintRect);
painter.setCompositionMode(QPainter::CompositionMode_SourceOver);
/* Manually clip paint rectangle using visible-region: */
lock();
QRegion visiblePaintRegion = m_syncVisibleRegion & paintRect;
unlock();
/* Repaint all the rectangles of visible-region: */
foreach (const QRect &rect, visiblePaintRegion.rects())
{
#ifdef Q_WS_WIN
/* Replace translucent background with black one,
* that is necessary for window with Qt::WA_TranslucentBackground: */
painter.setCompositionMode(QPainter::CompositionMode_Source);
painter.fillRect(rect, QColor(Qt::black));
painter.setCompositionMode(QPainter::CompositionMode_SourceAtop);
#endif /* Q_WS_WIN */
/* Draw image rectangle depending on rectangle width: */
if ((ulong)rect.width() < m_width * 2 / 3)
drawImageRectNarrow(painter, m_img,
rect, m_pMachineView->contentsX(), m_pMachineView->contentsY());
else
drawImageRectWide(painter, m_img,
rect, m_pMachineView->contentsX(), m_pMachineView->contentsY());
}
}