76 рядки
1.8 KiB
C++
76 рядки
1.8 KiB
C++
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#include <QApplication>
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#include <QScreen>
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#include <QDebug>
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#include "pdfworker.h"
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PdfWorker::PdfWorker()
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{
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}
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Poppler::Document * PdfWorker::document(QString path)
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{
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if(this->documentcache.contains(path))
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return this->documentcache.value(path);
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Poppler::Document *result = Poppler::Document::load(path);
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if(result == nullptr)
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{
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return nullptr;
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}
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result->setRenderHint(Poppler::Document::TextAntialiasing);
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this->documentcache.insert(path, result);
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return result;
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}
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void PdfWorker::generatePreviews(QVector<SearchResult> paths, double scalefactor)
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{
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this->cancelCurrent = false;
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this->generating = true;
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for(SearchResult &sr : paths)
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{
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if(this->cancelCurrent.load())
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{
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break;
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}
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Poppler::Document *doc = document(sr.path);
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if(doc == nullptr)
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{
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continue;
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}
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qDebug() << sr.path;
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if(doc->isLocked())
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{
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continue;
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}
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int p = (int)sr.page - 1;
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if(p < 0)
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p = 0;
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Poppler::Page *pdfpage = doc->page(p);
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QImage image = pdfpage->renderToImage(QGuiApplication::primaryScreen()->physicalDotsPerInchX() * scalefactor, QGuiApplication::primaryScreen()->physicalDotsPerInchY() *scalefactor);
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PdfPreview preview;
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preview.previewImage = image;
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preview.documentPath = sr.path;
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preview.page = sr.page;
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emit previewReady(preview);
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}
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isFreeMutex.lock();
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isFree.wakeOne();
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isFreeMutex.unlock();
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generating = false;
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emit previewsFinished();
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}
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void PdfWorker::cancelAndWait()
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{
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if(this->generating.load())
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{
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this->cancelCurrent = true;
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isFreeMutex.lock();
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isFree.wait(&isFreeMutex);
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isFreeMutex.unlock();
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}
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}
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