wmfimport.h

/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/

/* Code inspired by KOffice libwmf and adapted for Scribus by Jean Ghali */

#ifndef WMFIMPORT_H
#define WMFIMPORT_H

#include <QtXml/QtXml>

#include <QColor>
#include <QList>
#include <QSize>
#include "pluginapi.h"
#include "fpointarray.h"
#include "wmfcontext.h"

class QBuffer;
class FPointArray;
class PageItem;
class ScribusDoc;
class Selection;
class PrefsManager;
class TransactionSettings;

class  WmfCmd;
class  WmfObjHandle;
class  WmfObjPenHandle;
class  WmfObjBrushHandle;
struct WmfPlaceableHeader;

class WMFImport : public QObject
{
    Q_OBJECT

public:

    WMFImport(ScribusDoc* doc, int flags);
    ~WMFImport();

    bool import(QString fname, const TransactionSettings& trSettings, int flags);
    QImage readThumbnail(QString fn);

    void wmfClosePath(FPointArray *i);
    void wmfMoveTo(double x1, double y1);
    void wmfLineTo(FPointArray *i, double x1, double y1);
    void wmfCurveToCubic(FPointArray *i, double x1, double y1, double x2, double y2, double x3, double y3);

    bool interactive;
    bool unsupported;
    bool importFailed;
    bool importCanceled;

    ScribusDoc* m_Doc;
    Selection*  m_tmpSel;
    QStringList importedColors;

protected:

    QString m_docDesc;
    QString m_docTitle;

    WMFContext m_context;

    bool m_IsPlaceable, m_IsEnhanced, m_Valid;

    // coordinate system
    QRect  m_HeaderBoundingBox;
    QRect  m_BBox;

    QList<WmfCmd*> m_commands;
    WmfObjHandle** m_ObjHandleTab;
    FPointArray    m_Points;
    int m_Dpi;

    bool importWMF(const TransactionSettings& trSettings, int flags);
    bool loadWMF( const QString &fileName );
    bool loadWMF( QBuffer &buffer );

    QList<PageItem*> parseWmfCommands(void);

    void finishCmdParsing( PageItem* item );

    QString importColor(const QColor& color);

    QColor  colorFromParam( short* params );

    QTextCodec* codecFromCharset( int charset );

    QString symbolToUnicode ( const QByteArray& chars );

    FPointArray pointsFromParam( short num,  short* params );

    FPointArray pointsToPolyline( const FPointArray& points, bool closePath );

    void pointsToAngle( double xStart, double yStart, double xEnd, double yEnd, double& angleStart, double& angleLength );

    void addHandle( WmfObjHandle*  );
    void deleteHandle( int );

    unsigned short calcCheckSum( WmfPlaceableHeader* );

    virtual int findFunc( unsigned short aFunc ) const;

    unsigned int toDWord( short* params );

public:

    void setWindowOrg( QList<PageItem*>& items, long num, short* params );
    void setWindowExt( QList<PageItem*>& items, long num, short* params );

    /****************** Drawing *******************/
    void lineTo( QList<PageItem*>& items, long num, short* params );
    void moveTo( QList<PageItem*>& items, long num, short* params );
    void ellipse( QList<PageItem*>& items, long num, short* params );
    void polygon( QList<PageItem*>& items, long num, short* params );
    void polyPolygon( QList<PageItem*>& items, long num, short* params );
    void polyline( QList<PageItem*>& items, long num, short* params );
    void rectangle( QList<PageItem*>& items, long num, short* params );
    void roundRect( QList<PageItem*>& items, long num, short* params );
    void arc( QList<PageItem*>& items, long num, short* params );
    void chord( QList<PageItem*>& items, long num, short* params );
    void pie( QList<PageItem*>& items, long num, short* params );
    void setPolyFillMode( QList<PageItem*>& items, long num, short* params );
    void setBkColor( QList<PageItem*>& items, long num, short* params );
    void setBkMode( QList<PageItem*>& items, long num, short* params );
    void saveDC( QList<PageItem*>& items, long num, short* params );
    void restoreDC( QList<PageItem*>& items, long num, short* params );
    void intersectClipRect( QList<PageItem*>& items, long num, short* params );
    void excludeClipRect( QList<PageItem*>& items, long num, short* params );

    /****************** Text *******************/
    void setTextColor( QList<PageItem*>& items, long num, short* params );
    void setTextAlign( QList<PageItem*>& items, long num, short* params );
    void textOut( QList<PageItem*>& items, long num, short* params );
    void extTextOut( QList<PageItem*>& items, long num, short* params );

    /****************** Object handle *******************/
    void selectObject( QList<PageItem*>& items, long num, short* params );
    void deleteObject( QList<PageItem*>& items, long num, short* params );
    void createEmptyObject( QList<PageItem*>& items, long num, short* params );
    void createBrushIndirect( QList<PageItem*>& items, long num, short* params );
    void createPenIndirect( QList<PageItem*>& items, long num, short* params );
    void createFontIndirect( QList<PageItem*>& items, long num, short* params );

    /****************** misc *******************/
    void noop( QList<PageItem*>& items, long , short* );
    void end( QList<PageItem*>& items, long /*num*/, short* /*params*/ );

};

#endif