okular/kpdf/kpdf_pagewidget.h

#ifndef _KPDF_PAGEWIDGET_H_
#define _KPDF_PAGEWIDGET_H_

#include <qpixmap.h>
#include <qwidget.h>
#include <qscrollview.h>

class LinkAction;
class PDFDoc;

class QOutputDevPixmap;

namespace KPDF
{
    /**
     * Widget displaying a pixmap containing a PDF page and Links.
     */
    class PageWidget : public QScrollView
    {
        Q_OBJECT

        enum ZoomMode { FitInWindow, FitWidth, FitVisible, FixedFactor };

    public:
        PageWidget(QWidget* parent = 0, const char* name = 0);
        ~PageWidget();
        void setPDFDocument(PDFDoc*);
        void setPixelsPerPoint(float);
        /* void setLinks(); */

        void setPage(int pagenum);
        int getPage() const { return m_currentPage; };
        void enableScrollBars( bool b );
        /**
         * Return true if the top resp. bottom of the page is visible.
         */
        bool atTop()    const;
        bool atBottom() const;
    public slots:
        void nextPage();
        void previousPage();
        void zoomIn();
        void zoomOut();

        void updatePixmap();
        void scrollUp();
        void scrollDown();
        void scrollRight();
        void scrollLeft();
        void scrollBottom();
        void scrollTop();
        bool readUp();
        bool readDown();
    signals:
        void linkClicked(LinkAction*);
        void ReadUp();
        void ReadDown();
        void ZoomOut();
        void ZoomIn();
    protected:
        virtual void keyPressEvent( QKeyEvent* );
        void contentsMousePressEvent(QMouseEvent*);
        void contentsMouseReleaseEvent(QMouseEvent*);
        void contentsMouseMoveEvent(QMouseEvent*);
        virtual void wheelEvent( QWheelEvent * );
        virtual void drawContents ( QPainter *p, int, int, int, int );

    private:

        QOutputDevPixmap * m_outputdev;
        PDFDoc* m_doc;

        float   m_ppp; // Pixels per point
        float		m_zoomFactor;
        ZoomMode m_zoomMode;

        int m_currentPage;

        LinkAction* m_pressedAction;
    };
}

#endif

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