Differential D20953 Diff 60006 src/declarativeitems/lessonpainter.cpp

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src/declarativeitems/lessonpainter.cpp

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181 181​
182void LessonPainter::paint(QPainter* painter) 182​void LessonPainter::paint(QPainter* painter)
183{ 183​{
184 checkImageCache(); 184​ if (m_imageCacheDirty)
185 painter->drawPixmap(0, 0, m_imageCache); 185​ {
186​ const auto device = painter->device();
187​ QImage img(QSize(qFloor(device->width()), qFloor(device->height())), QImage::Format_ARGB32_Premultiplied);
188​ img.setDevicePixelRatio(img.width() / width());
189​ img.fill(Qt::transparent);
190​ QPainter painter(&img);
191​ painter.scale(m_textScale, m_textScale);
192​ m_doc->drawContents(&painter);
193​ m_imageCache = img;
194​ m_imageCacheDirty = false;
195​ }
196​
197​ painter->drawImage(0, 0, m_imageCache);
186} 198​}
187 199​
188void LessonPainter::updateLayout() 200​void LessonPainter::updateLayout()
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317void LessonPainter::invalidateImageCache() 329​void LessonPainter::invalidateImageCache()
318{ 330​{
319 m_imageCacheDirty = true; 331​ m_imageCacheDirty = true;
320 m_imageCache = QPixmap(); 332​ m_imageCache = QImage();
321} 333​}
322 334​
323void LessonPainter::checkImageCache() 335​void LessonPainter::checkImageCache()
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325 if (!m_imageCacheDirty) 337​ if (!m_imageCacheDirty)
326 return; 338​ return;
327 339​
328 QPixmap img(qFloor(width()), qFloor(height())); 340​ QImage img(QSize(qFloor(width()), qFloor(height())), QImage::Format_ARGB32_Premultiplied);
329 img.fill(Qt::transparent); 341​ img.fill(Qt::transparent);
330 QPainter painter(&img); 342​ QPainter painter(&img);
331 painter.scale(m_textScale, m_textScale); 343​ painter.scale(m_textScale, m_textScale);
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