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#include <qapplication.h>
#include <qpainter.h>
#include <qpixmap.h>
#include <qwidget.h>
#include <qlabel.h>
#include <qmessagebox.h>
#include <qfile.h>
#include <ctype.h>
#include <poppler-qt.h>
#include <stdlib.h>
class PDFDisplay : public QWidget // picture display widget
{
public:
PDFDisplay( Poppler::Document *d );
~PDFDisplay();
protected:
void paintEvent( QPaintEvent * );
void keyPressEvent( QKeyEvent * );
private:
void display();
int currentPage;
QPixmap *pixmap;
Poppler::Document *doc;
};
PDFDisplay::PDFDisplay( Poppler::Document *d )
{
doc = d;
pixmap = 0;
currentPage = 0;
display();
}
PDFDisplay::~PDFDisplay()
{
delete doc;
delete pixmap;
}
void PDFDisplay::paintEvent( QPaintEvent *e )
{
QPainter paint( this ); // paint widget
if (pixmap)
paint.drawPixmap(0, 0, *pixmap);
}
void PDFDisplay::keyPressEvent( QKeyEvent *e )
{
if (e->key() == Qt::Key_Down)
{
if (currentPage + 1 < doc->getNumPages())
{
currentPage++;
display();
}
}
else if (e->key() == Qt::Key_Up)
{
if (currentPage > 0)
{
currentPage--;
display();
}
}
}
void PDFDisplay::display()
{
if (doc) {
Poppler::Page *page = doc->getPage(currentPage);
if (page) {
delete pixmap;
page->renderToPixmap(&pixmap, -1, -1, -1, -1);
delete page;
update();
}
} else {
printf("doc not loaded\n");
}
}
int main( int argc, char **argv )
{
QApplication a( argc, argv ); // QApplication required!
if ( argc < 2 || (argc == 3 && strcmp(argv[2], "-extract") != 0) || argc > 3)
{
// use argument as file name
printf("usage: test-poppler-qt filename [-extract]\n");
exit(1);
}
Poppler::Document *doc = Poppler::Document::load(argv[1]);
if (!doc)
{
printf("doc not loaded\n");
exit(1);
}
if (argc == 2)
{
PDFDisplay test( doc ); // create picture display
a.setMainWidget( &test); // set main widget
test.setCaption("Poppler-Qt Test");
test.show(); // show it
return a.exec(); // start event loop
}
else
{
Poppler::Page *page = doc->getPage(0);
QLabel *l = new QLabel(page->getText(Poppler::Rectangle()), 0);
l->show();
a.setMainWidget(l); // set main widget
delete page;
delete doc;
return a.exec();
}
}
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