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#include <stdlib.h>
#include <QtCore/QtCore>
#include <QtGui/QtGui>
#include <ctype.h>
#include <poppler-qt4.h>
class PDFDisplay : public QWidget // picture display widget
{
public:
PDFDisplay( Poppler::Document *d, bool arthur );
~PDFDisplay();
protected:
void paintEvent( QPaintEvent * );
void keyPressEvent( QKeyEvent * );
private:
void display();
int m_currentPage;
QImage image;
Poppler::Document *doc;
QString backendString;
};
PDFDisplay::PDFDisplay( Poppler::Document *d, bool arthur )
{
doc = d;
m_currentPage = 0;
if (arthur)
{
backendString = "Arthur";
doc->setRenderBackend(Poppler::Document::ArthurBackend);
}
else
{
backendString = "Splash";
doc->setRenderBackend(Poppler::Document::SplashBackend);
}
display();
}
void PDFDisplay::display()
{
if (doc) {
Poppler::Page *page = doc->page(m_currentPage);
if (page) {
qDebug() << "Displaying page using" << backendString << "backend: " << m_currentPage;
image = page->renderToImage();
update();
delete page;
}
} else {
qWarning() << "doc not loaded";
}
}
PDFDisplay::~PDFDisplay()
{
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);
}
}
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) ||
argc > 3)
{
// use argument as file name
qWarning() << "usage: test-poppler-qt filename [-extract|-arthur]";
exit(1);
}
Poppler::Document *doc = Poppler::Document::load(argv[1]);
if (!doc)
{
qWarning() << "doc not loaded";
exit(1);
}
// 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();
QStringList fontNameList;
foreach( Poppler::FontInfo font, doc->fonts() )
fontNameList += font.name();
qDebug() << " Fonts: " << fontNameList.join( ", " );
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))
{
bool useArthur = (argc == 3 && strcmp(argv[2], "-arthur") == 0);
PDFDisplay test( doc, useArthur ); // create picture display
test.setWindowTitle("Poppler-Qt4 Test");
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();
}
}
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