vcanvas.h

/* This file is part of the KDE project
   Copyright (C) 2001, 2002, 2003 The Karbon Developers
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
 
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.
 
   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/
 
#ifndef __VCANVAS_H__
#define __VCANVAS_H__
 
 
#include <tqscrollview.h>
#include <koffice_export.h>
class KarbonPart;
class KarbonView;
class KoRect;
class KoPoint;
class VPainter;
 
// The canvas is a TQScrollView.
 
class KARBONCOMMON_EXPORT VCanvas : public TQScrollView
{
    TQ_OBJECT
  
public:
    VCanvas( TQWidget *parent, KarbonView* view, KarbonPart* part );
    virtual ~VCanvas();
 
    void repaintAll( const KoRect & );
    void repaintAll( bool drawVObjects = true );
 
    TQPixmap *pixmap() { return m_pixmap; }

    void setPos( const KoPoint& p );
 
    KoPoint toViewport( const KoPoint & ) const;
    KoPoint toContents( const KoPoint & ) const;
    KoRect boundingBox() const;

    void setViewport( double centerX, double centerY );

    void setViewportRect( const KoRect &rect );
 
    int pageOffsetX() const;
    int pageOffsetY() const;
 
    KoPoint snapToGrid( const KoPoint & );
 
protected:
    virtual void dragEnterEvent( TQDragEnterEvent * );
    virtual void dropEvent( TQDropEvent * );
    virtual void focusInEvent( TQFocusEvent * );
    virtual void viewportPaintEvent( TQPaintEvent* );
    virtual void drawContents( TQPainter* painter, int clipx, int clipy,
        int clipw, int cliph  );
    void drawDocument( TQPainter* painter, const KoRect& rect, bool drawVObjects = true );
 
    virtual void resizeEvent( TQResizeEvent* event );
 
    virtual bool eventFilter( TQObject* object, TQEvent* event );
 
    void setYMirroring( VPainter * );
 
private slots:
    void slotContentsMoving( int , int );
 
signals:
    void viewportChanged();
 
private:
    TQPixmap *m_pixmap;
    KarbonPart* m_part;
    KarbonView* m_view;
};
 
#endif