#include #include #include #include #include #include #include #include #include #include #include class PDFDisplay : public QWidget // picture display widget { public: PDFDisplay( Poppler::Document *d, bool arthur ); ~PDFDisplay(); void setShowTextRects(bool show); void display(); protected: void paintEvent( QPaintEvent * ); void keyPressEvent( QKeyEvent * ); void mousePressEvent( QMouseEvent * ); private: int m_currentPage; QImage image; Poppler::Document *doc; QString backendString; bool showTextRects; QList textRects; }; PDFDisplay::PDFDisplay( Poppler::Document *d, bool arthur ) { showTextRects = false; doc = d; m_currentPage = 0; if (arthur) { backendString = "Arthur"; doc->setRenderBackend(Poppler::Document::ArthurBackend); } else { backendString = "Splash"; doc->setRenderBackend(Poppler::Document::SplashBackend); } doc->setRenderHint(Poppler::Document::Antialiasing, true); doc->setRenderHint(Poppler::Document::TextAntialiasing, true); } void PDFDisplay::setShowTextRects(bool show) { showTextRects = show; } void PDFDisplay::display() { if (doc) { Poppler::Page *page = doc->page(m_currentPage); if (page) { qDebug() << "Displaying page using" << backendString << "backend: " << m_currentPage; QTime t = QTime::currentTime(); image = page->renderToImage(); qDebug() << "Rendering took" << t.msecsTo(QTime::currentTime()) << "msecs"; qDeleteAll(textRects); if (showTextRects) { QPainter painter(&image); painter.setPen(Qt::red); textRects = page->textList(); foreach(Poppler::TextBox *tb, textRects) { painter.drawRect(tb->boundingBox()); } } else textRects.clear(); update(); delete page; } } else { qWarning() << "doc not loaded"; } } PDFDisplay::~PDFDisplay() { qDeleteAll(textRects); delete doc; } void PDFDisplay::paintEvent( QPaintEvent *e ) { QPainter paint( this ); // paint widget if (!image.isNull()) { paint.drawImage(0, 0, image); } else { qWarning() << "null image"; } } void PDFDisplay::keyPressEvent( QKeyEvent *e ) { if (e->key() == Qt::Key_Down) { if (m_currentPage + 1 < doc->numPages()) { m_currentPage++; display(); } } else if (e->key() == Qt::Key_Up) { if (m_currentPage > 0) { m_currentPage--; display(); } } else if (e->key() == Qt::Key_Q) { exit(0); } } void PDFDisplay::mousePressEvent( QMouseEvent *e ) { int i = 0; foreach(Poppler::TextBox *tb, textRects) { if (tb->boundingBox().contains(e->pos())) { QString tt = QString("Text: \"%1\"\nIndex in text list: %2").arg(tb->text()).arg(i); QToolTip::showText(e->globalPos(), tt, this); break; } ++i; } } int main( int argc, char **argv ) { QApplication a( argc, argv ); // QApplication required! if ( argc < 2 || (argc == 3 && strcmp(argv[2], "-extract") != 0 && strcmp(argv[2], "-arthur") != 0 && strcmp(argv[2], "-textRects") != 0) || argc > 3) { // use argument as file name qWarning() << "usage: test-poppler-qt filename [-extract|-arthur|-textRects]"; exit(1); } Poppler::Document *doc = Poppler::Document::load(QFile::decodeName(argv[1])); if (!doc) { qWarning() << "doc not loaded"; exit(1); } if (doc->isLocked()) { qWarning() << "document locked (needs password)"; exit(0); } // output some meta-data qDebug() << " PDF Version: " << doc->pdfVersion(); qDebug() << " Title: " << doc->info("Title"); qDebug() << " Subject: " << doc->info("Subject"); qDebug() << " Author: " << doc->info("Author"); qDebug() << " Key words: " << doc->info("Keywords"); qDebug() << " Creator: " << doc->info("Creator"); qDebug() << " Producer: " << doc->info("Producer"); qDebug() << " Date created: " << doc->date("CreationDate").toString(); qDebug() << " Date modified: " << doc->date("ModDate").toString(); qDebug() << "Number of pages: " << doc->numPages(); qDebug() << " Linearised: " << doc->isLinearized(); qDebug() << " Encrypted: " << doc->isEncrypted(); qDebug() << " OK to print: " << doc->okToPrint(); qDebug() << " OK to copy: " << doc->okToCopy(); qDebug() << " OK to change: " << doc->okToChange(); qDebug() << "OK to add notes: " << doc->okToAddNotes(); qDebug() << " Page mode: " << doc->pageMode(); qDebug() << " Metadata: " << doc->metadata(); QStringList fontNameList; foreach( const Poppler::FontInfo &font, doc->fonts() ) fontNameList += font.name(); qDebug() << " Fonts: " << fontNameList.join( ", " ); if ( doc->hasEmbeddedFiles() ) { qDebug() << "Embedded files:"; foreach( Poppler::EmbeddedFile *file, doc->embeddedFiles() ) { qDebug() << " " << file->name(); } qDebug(); } else { qDebug() << "No embedded files"; } if (doc->numPages() <= 0) { delete doc; qDebug() << "Doc has no pages"; return 0; } Poppler::Page *page = doc->page(0); qDebug() << "Page 1 size: " << page->pageSize().width()/72 << "inches x " << page->pageSize().height()/72 << "inches"; delete page; if (argc == 2 || (argc == 3 && strcmp(argv[2], "-arthur") == 0) || (argc == 3 && strcmp(argv[2], "-textRects") == 0)) { bool useArthur = (argc == 3 && strcmp(argv[2], "-arthur") == 0); PDFDisplay test( doc, useArthur ); // create picture display test.setWindowTitle("Poppler-Qt4 Test"); test.setShowTextRects(argc == 3 && strcmp(argv[2], "-textRects") == 0); test.display(); test.show(); // show it return a.exec(); // start event loop } else { Poppler::Page *page = doc->page(0); QLabel *l = new QLabel(page->text(QRectF()), 0); l->show(); delete page; delete doc; return a.exec(); } }