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));
}
}
}
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;
}
