void UBThumbnailAdaptor::generateMissingThumbnails(UBDocumentProxy* proxy)
{
int existingPageCount = proxy->pageCount();
for (int iPageNo = 0; iPageNo < existingPageCount; ++iPageNo)
{
QString thumbFileName = proxy->persistencePath() + UBFileSystemUtils::digitFileFormat("/page%1.thumbnail.jpg", iPageNo);
QFile thumbFile(thumbFileName);
if (!thumbFile.exists())
{
bool displayMessage = (existingPageCount > 5);
int thumbCount = 0;
UBGraphicsScene* scene = UBSvgSubsetAdaptor::loadScene(proxy, iPageNo);
if (scene)
{
thumbCount++;
if (displayMessage && thumbCount == 1)
UBApplication::showMessage(tr("Generating preview thumbnails ..."));
persistScene(proxy->persistencePath(), scene, iPageNo);
}
if (displayMessage && thumbCount > 0)
UBApplication::showMessage(tr("%1 thumbnails generated ...").arg(thumbCount));
}
}
}
void
YTLocalVideoData::thumbnailDownloadFinished(QByteArray data)
{
Q_ASSERT(!_thumbnailPath.isEmpty());
QFile thumbFile(_thumbnailPath);
// TODO: Handle open and write failures
thumbFile.open(QIODevice::WriteOnly);
thumbFile.write(data);
thumbFile.close();
emit thumbnailUrlChanged(thumbnailUrl());
qDebug() << "Finished downloading thumbnail for video:" << _videoId;
}
void UBThumbnailAdaptor::persistScene(UBDocumentProxy* proxy, UBGraphicsScene* pScene, int pageIndex, bool overrideModified)
{
QString fileName = proxy->persistencePath() + UBFileSystemUtils::digitFileFormat("/page%1.thumbnail.jpg", pageIndex);
QFile thumbFile(fileName);
if (pScene->isModified() || overrideModified || !thumbFile.exists() || UBApplication::boardController->paletteManager()->teacherGuideDockWidget()->teacherGuideWidget()->isModified())
{
qreal nominalWidth = pScene->nominalSize().width();
qreal nominalHeight = pScene->nominalSize().height();
qreal ratio = nominalWidth / nominalHeight;
QRectF sceneRect = pScene->normalizedSceneRect(ratio);
qreal width = UBSettings::maxThumbnailWidth;
qreal height = width / ratio;
QImage thumb(width, height, QImage::Format_ARGB32);
QRectF imageRect(0, 0, width, height);
QPainter painter(&thumb);
painter.setRenderHint(QPainter::Antialiasing, true);
painter.setRenderHint(QPainter::SmoothPixmapTransform, true);
if (pScene->isDarkBackground())
{
painter.fillRect(imageRect, Qt::black);
}
else
{
painter.fillRect(imageRect, Qt::white);
}
pScene->setRenderingQuality(UBItem::RenderingQualityHigh);
pScene->render(&painter, imageRect, sceneRect, Qt::KeepAspectRatio);
if(UBApplication::boardController->paletteManager()->teacherGuideDockWidget()->teacherGuideWidget()->isModified()){
QPixmap toque(":images/toque.svg");
painter.setOpacity(0.6);
painter.drawPixmap(QPoint(width - toque.width(),0),toque);
}
pScene->setRenderingQuality(UBItem::RenderingQualityNormal);
thumb.scaled(width, height, Qt::KeepAspectRatio, Qt::SmoothTransformation).save(fileName, "JPG");
}
}
void UBThumbnailAdaptor::persistScene(UBDocumentProxy* proxy, UBGraphicsScene* pScene, int pageIndex, bool overrideModified)
{
qDebug() << "Persist scene on path " << proxy->persistencePath() << ", index " << pageIndex;
QString fileName = proxy->persistencePath() + UBFileSystemUtils::digitFileFormat("/page%1.thumbnail.jpg", pageIndex);
QFile thumbFile(fileName);
if (pScene->isModified() || overrideModified || !thumbFile.exists())
{
qreal nominalWidth = pScene->nominalSize().width();
qreal nominalHeight = pScene->nominalSize().height();
qreal ratio = nominalWidth / nominalHeight;
QRectF sceneRect = pScene->normalizedSceneRect(ratio);
qreal width = UBSettings::maxThumbnailWidth;
qreal height = width / ratio;
QImage thumb(width, height, QImage::Format_ARGB32);
QRectF imageRect(0, 0, width, height);
QPainter painter(&thumb);
painter.setRenderHint(QPainter::Antialiasing, true);
painter.setRenderHint(QPainter::SmoothPixmapTransform, true);
if (pScene->isDarkBackground())
{
painter.fillRect(imageRect, Qt::black);
}
else
{
painter.fillRect(imageRect, Qt::white);
}
pScene->setRenderingContext(UBGraphicsScene::NonScreen);
pScene->setRenderingQuality(UBItem::RenderingQualityHigh);
pScene->render(&painter, imageRect, sceneRect, Qt::KeepAspectRatio);
pScene->setRenderingContext(UBGraphicsScene::Screen);
pScene->setRenderingQuality(UBItem::RenderingQualityNormal);
thumb.scaled(width, height, Qt::KeepAspectRatio, Qt::SmoothTransformation).save(fileName, "JPG");
}
}
void ThumbManager::replyFinished(QNetworkReply* reply){
QString uri = m_connections.key(reply);
m_connections.remove(uri);
if(uri.isEmpty()) {
return;
}
if(reply->error() != QNetworkReply::NoError){
reply->deleteLater();
return;
}else if(!reply->attribute(QNetworkRequest::RedirectionTargetAttribute).isNull()){
QUrl newuri(reply->attribute(QNetworkRequest::RedirectionTargetAttribute).toUrl());
QNetworkReply *rep = m_manager->get(QNetworkRequest(newuri));
m_connections.insert(uri, rep);
reply->deleteLater();
return;
}
QFile thumbFile(getThumbFilePath(uri));
thumbFile.open(QFile::WriteOnly);
thumbFile.write(reply->readAll());
thumbFile.close();
emit thumbDownloaded(uri);
reply->deleteLater();
}
QList<QPixmap> UBThumbnailAdaptor::load(UBDocumentProxy* proxy)
{
QList<QPixmap> thumbnails;
if (!proxy || proxy->persistencePath().size() == 0)
return thumbnails;
//compatibility with older formats (<= 4.0.b.2.0) : generate missing thumbnails
int existingPageCount = proxy->pageCount();
QString thumbFileName = proxy->persistencePath() +
UBFileSystemUtils::digitFileFormat("/page%1.thumbnail.jpg", existingPageCount);
QFile thumbFile(thumbFileName);
if (!thumbFile.exists())
{
bool displayMessage = (existingPageCount > 5);
int thumbCount = 0;
for(int i = 0 ; i < existingPageCount; i++)
{
UBGraphicsScene* scene = UBSvgSubsetAdaptor::loadScene(proxy, i);
if (scene)
{
thumbCount++;
if (displayMessage && thumbCount == 1)
UBApplication::showMessage(tr("Generating preview thumbnails ..."));
persistScene(proxy->persistencePath(), scene, i);
}
}
if (displayMessage && thumbCount > 0)
UBApplication::showMessage(tr("%1 thumbnails generated ...").arg(thumbCount));
}
//end compatibility with older format
bool moreToProcess = true;
int pageCount = 0;
while (moreToProcess) {
pageCount++;
QString fileName = proxy->persistencePath() +
UBFileSystemUtils::digitFileFormat("/page%1.thumbnail.jpg", pageCount);
QFile file(fileName);
if (file.exists()) {
QPixmap pix;
//Warning. Works only with modified Qt
pix.load(fileName, 0, Qt::AutoColor, false);
thumbnails.append(pix);
} else {
moreToProcess = false;
}
}
return thumbnails;
}
