kowmfread.h

/* This file is part of the KDE libraries
   Copyright (c) 2003 thierry lorthiois (lorthioist@wanadoo.fr)
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License version 2 as published by the Free Software Foundation.
 
   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 _KOWMFREAD_H_
#define _KOWMFREAD_H_
 
#include <tqpen.h>
#include <tqbrush.h>
#include <tqfont.h>
#include <tqcolor.h>
#include <tqrect.h>
#include <tqregion.h>
#include <tqimage.h>
#include <tqwmatrix.h>
#include <tqstring.h>
#include <tqptrlist.h>
#include <tqpointarray.h>
 
#include <../kofficecore/koffice_export.h>
class KoWmfReadPrivate;

 
class KOWMF_EXPORT KoWmfRead
{
public:
    KoWmfRead();
    virtual ~KoWmfRead();

    virtual bool load( const TQString& fileName );
    virtual bool load( const TQByteArray& array );

    virtual bool play(  );

    bool isStandard( void ) const;
    bool isPlaceable( void ) const;
    bool isEnhanced( void ) const;
    bool isValid( void ) const;

    virtual TQRect boundingRect( void ) const;

    int defaultDpi( void ) const;

    void setDebug( int nbFunc );
 
    // -------------------------------------------------------------------------
    // A virtual TQPainter : inherit those virtuals functions
    // for a good documentation : check TQPainter documentation
    virtual bool  begin() = 0;
    virtual bool  end() = 0;
    virtual void  save() = 0;
    virtual void  restore() = 0;
 
    // Drawing tools
    virtual void  setFont( const TQFont & ) = 0;
    // the pen : the width of the pen is in logical coordinate
    virtual void  setPen( const TQPen &p ) = 0;
    virtual const TQPen &pen() const = 0;
    virtual void  setBrush( const TQBrush & ) = 0;
 
    // Drawing attributes/modes
    virtual void  setBackgroundColor( const TQColor & ) = 0;
    virtual void  setBackgroundMode( TQt::BGMode ) = 0;
    virtual void  setRasterOp( TQt::RasterOp ) = 0;
 
    // Change logical Coordinate
    // some wmf files call those functions several times in the middle of a drawing
    // others doesn't call setWindow* at all
    virtual void  setWindowOrg( int left, int top ) = 0;
    virtual void  setWindowExt( int width, int height ) = 0;
 
    // Clipping
    // the 'CoordinateMode' parameter is ommitted : always CoordPainter in wmf
    // setClipRegion() is often used with save() and restore() => implement all or none
    virtual void  setClipRegion( const TQRegion & ) = 0;
    virtual TQRegion clipRegion() = 0;
 
    // Graphics drawing functions
    virtual void  moveTo( int x, int y ) = 0;
    virtual void  lineTo( int x, int y ) = 0;
    virtual void  drawRect( int x, int y, int w, int h ) = 0;
    virtual void  drawRoundRect( int x, int y, int w, int h, int = 25, int = 25 ) = 0;
    virtual void  drawEllipse( int x, int y, int w, int h ) = 0;
    virtual void  drawArc( int x, int y, int w, int h, int a, int alen ) = 0;
    virtual void  drawPie( int x, int y, int w, int h, int a, int alen ) = 0;
    virtual void  drawChord( int x, int y, int w, int h, int a, int alen ) = 0;
    virtual void  drawPolyline( const TQPointArray &pa ) = 0;
    virtual void  drawPolygon( const TQPointArray &pa, bool winding=false ) = 0;
    // drawPolyPolygon draw the XOR of a list of polygons
    // listPa : list of polygons
    virtual void  drawPolyPolygon( TQPtrList<TQPointArray>& listPa, bool winding=false ) = 0;
    virtual void  drawImage( int x, int y, const TQImage &, int sx = 0, int sy = 0, int sw = -1, int sh = -1 ) = 0;
 
    // Text drawing functions
    // rotation = the degrees of rotation in counterclockwise
    // not yet implemented in KWinMetaFile
    virtual void  drawText( int x, int y, int w, int h, int flags, const TQString &s, double rotation ) = 0;
 
    // matrix transformation : only used for bitmap manipulation
    virtual void  setWorldMatrix( const TQWMatrix &, bool combine=false ) = 0;
 
private:
    KoWmfReadPrivate  *mKwmf;
 
};
 
#endif