F:/KPlato/koffice/libs/kwmf/kowmfreadprivate.h

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/* This file is part of the KDE libraries
 * Copyright (c) 1998 Stefan Taferner
 *                       2001/2003 thierry lorthiois (lorthioist@wanadoo.fr)
 * With the help of WMF documentation by Caolan Mc Namara

   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 _KOWMFREADPRIVATE_H_
#define _KOWMFREADPRIVATE_H_

#include <QPen>
#include <QColor>
#include <QFont>
#include <QRect>
#include <qregion.h>
#include <QBuffer>
#include <QString>
//Added by qt3to4:
#include <QPolygon>

#include "kowmfstruct.h"
#include "kowmfstack.h"

class KoWmfRead;

class KoWmfReadPrivate
{
public:
    KoWmfReadPrivate();
    virtual ~KoWmfReadPrivate();

    bool load( const QByteArray& array );

    bool play( KoWmfRead* readKwmf );


    /* Metafile painter methods */

    void setWindowOrg( quint32 size, QDataStream& stream );
    void setWindowExt( quint32 size, QDataStream& stream );
    void ScaleWindowExt( quint32, QDataStream& stream );
    void OffsetWindowOrg( quint32, QDataStream& stream );

    /****************** Drawing *******************/
    void lineTo( quint32 size, QDataStream& stream );
    void moveTo( quint32 size, QDataStream& stream );
    void ellipse( quint32 size, QDataStream& stream );
    void polygon( quint32 size, QDataStream& stream );
    void polyPolygon( quint32 size, QDataStream& stream );
    void polyline( quint32 size, QDataStream& stream );
    void rectangle( quint32 size, QDataStream& stream );
    void roundRect( quint32 size, QDataStream& stream );
    void arc( quint32 size, QDataStream& stream );
    void chord( quint32 size, QDataStream& stream );
    void pie( quint32 size, QDataStream& stream );
    void setPolyFillMode( quint32 size, QDataStream& stream );
    void setBkColor( quint32 size, QDataStream& stream );
    void setBkMode( quint32 size, QDataStream& stream );
    void setPixel( quint32 size, QDataStream& stream );
    void setRop( quint32 size, QDataStream& stream );
    void saveDC( quint32 size, QDataStream& stream );
    void restoreDC( quint32 size, QDataStream& stream );
    void intersectClipRect( quint32 size, QDataStream& stream );
    void excludeClipRect( quint32 size, QDataStream& stream );

    /****************** Text *******************/
    void setTextColor( quint32 size, QDataStream& stream );
    void setTextAlign( quint32 size, QDataStream& stream );
    void textOut( quint32 size, QDataStream& stream );
    void extTextOut( quint32 size, QDataStream& stream );

    /****************** Bitmap *******************/
    void SetStretchBltMode( quint32, QDataStream& stream );
    void dibBitBlt( quint32 size, QDataStream& stream );
    void dibStretchBlt( quint32 size, QDataStream& stream );
    void stretchDib( quint32 size, QDataStream& stream );
    void dibCreatePatternBrush( quint32 size, QDataStream& stream );

    /****************** Object handle *******************/
    void selectObject( quint32 size, QDataStream& stream );
    void deleteObject( quint32 size, QDataStream& stream );
    void createEmptyObject();
    void createBrushIndirect( quint32 size, QDataStream& stream );
    void createPenIndirect( quint32 size, QDataStream& stream );
    void createFontIndirect( quint32 size, QDataStream& stream );

    /****************** misc *******************/
    void end( quint32, QDataStream& stream );

    static quint16 calcCheckSum( WmfPlaceableHeader* );

    // function unimplemented
    void notyet( quint32, QDataStream& stream );
    void region( quint32, QDataStream& stream );
    void palette( quint32, QDataStream& stream );
    void escape( quint32, QDataStream& stream );
    void setRelAbs( quint32, QDataStream& stream );
    void setMapMode( quint32, QDataStream& stream );
    void extFloodFill( quint32, QDataStream& stream );
    void startDoc( quint32, QDataStream& stream );
    void startPage( quint32, QDataStream& stream );
    void endDoc( quint32, QDataStream& stream );
    void endPage( quint32, QDataStream& stream );
    void resetDC( quint32, QDataStream& stream );
    void bitBlt( quint32, QDataStream& stream );
    void setDibToDev( quint32, QDataStream& stream );
    void createBrush( quint32, QDataStream& stream );
    void createPatternBrush( quint32, QDataStream& stream );
    void createBitmap( quint32, QDataStream& stream );
    void createBitmapIndirect( quint32, QDataStream& stream );
    void createPalette( quint32, QDataStream& stream );
    void createRegion( quint32, QDataStream& stream );

private:
    //-----------------------------------------------------------------------------
    // Utilities and conversion Wmf -> Qt

    bool addHandle( KoWmfHandle*  );
    void deleteHandle( int );

    void pointArray( QDataStream& stream, QPolygon& pa );

    QColor qtColor( quint32 color ) const
    { return QColor( color & 0xFF, (color>>8) & 0xFF, (color>>16) & 0xFF ); }

    void xyToAngle( int xStart, int yStart, int xEnd, int yEnd, int& angle, int& aLength );

    QPainter::CompositionMode winToQtComposition( quint16 param ) const;
    QPainter::CompositionMode winToQtComposition( quint32 param ) const;

    bool dibToBmp( QImage& bmp, QDataStream& stream, quint32 size);


public:
    // state of the WMF
    bool mValid;
    bool mStandard;
    bool mPlaceable;
    bool mEnhanced;

    QRect  mBBox;     // placeable file : this is the header
                      // standard file : this is the value in setWindowOrg and setWindowExt
    int mDpi;

    int mNbrFunc;

private:
    // the output
    KoWmfRead *mReadWmf;

    // current coordinate != mBBox
    QRect  mWindow;
    // current state of the drawing
    QColor  mTextColor;
    quint16  mTextAlign;
    int     mTextRotation;
    bool    mWinding;

    // memory allocation for WMF file
    QBuffer*  mBuffer;
    int    mOffsetFirstRecord;

    // stack of object handle
    KoWmfHandle**  mObjHandleTab;
    // number of object on the stack
    int    mNbrObject;
    bool   mStackOverflow;
};

    static const struct KoWmfFunc {
        void ( KoWmfReadPrivate::*method )( quint32, QDataStream& );
    } koWmfFunc[] = {
      { &KoWmfReadPrivate::end }, // 0
      { &KoWmfReadPrivate::setBkColor }, // 1
      { &KoWmfReadPrivate::setBkMode }, // 2
      { &KoWmfReadPrivate::setMapMode }, // 3
      { &KoWmfReadPrivate::setRop }, // 4
      { &KoWmfReadPrivate::setRelAbs }, // 5
      { &KoWmfReadPrivate::setPolyFillMode }, // 6
      { &KoWmfReadPrivate::SetStretchBltMode }, // 7
      { &KoWmfReadPrivate::notyet }, // 8
      { &KoWmfReadPrivate::setTextColor }, // 9
      { &KoWmfReadPrivate::ScaleWindowExt }, // 10
      { &KoWmfReadPrivate::setWindowOrg }, // 11
      { &KoWmfReadPrivate::setWindowExt }, // 12
      { &KoWmfReadPrivate::notyet }, // 13
      { &KoWmfReadPrivate::notyet }, // 14
      { &KoWmfReadPrivate::OffsetWindowOrg }, // 15
      { &KoWmfReadPrivate::notyet }, // 16
      { &KoWmfReadPrivate::notyet }, // 17
      { &KoWmfReadPrivate::notyet }, // 18
      { &KoWmfReadPrivate::lineTo }, // 19
      { &KoWmfReadPrivate::moveTo }, // 20
      { &KoWmfReadPrivate::excludeClipRect }, // 21
      { &KoWmfReadPrivate::intersectClipRect }, // 22
      { &KoWmfReadPrivate::arc }, // 23
      { &KoWmfReadPrivate::ellipse }, // 24
      { &KoWmfReadPrivate::notyet }, // 25
      { &KoWmfReadPrivate::pie }, // 26
      { &KoWmfReadPrivate::rectangle }, // 27
      { &KoWmfReadPrivate::roundRect }, // 28
      { &KoWmfReadPrivate::notyet }, // 29
      { &KoWmfReadPrivate::saveDC }, // 30
      { &KoWmfReadPrivate::setPixel }, // 31
      { &KoWmfReadPrivate::notyet }, // 32
      { &KoWmfReadPrivate::textOut }, // 33
      { &KoWmfReadPrivate::bitBlt }, // 34
      { &KoWmfReadPrivate::notyet }, // 35
      { &KoWmfReadPrivate::polygon }, // 36
      { &KoWmfReadPrivate::polyline }, // 37
      { &KoWmfReadPrivate::escape }, // 38
      { &KoWmfReadPrivate::restoreDC }, // 39
      { &KoWmfReadPrivate::region }, // 40
      { &KoWmfReadPrivate::region }, // 41
      { &KoWmfReadPrivate::region }, // 42
      { &KoWmfReadPrivate::region }, // 43
      { &KoWmfReadPrivate::region }, // 44
      { &KoWmfReadPrivate::selectObject }, // 45
      { &KoWmfReadPrivate::setTextAlign }, // 46
      { 0 }, // 47
      { &KoWmfReadPrivate::chord }, // 48
      { &KoWmfReadPrivate::notyet }, // 49
      { &KoWmfReadPrivate::extTextOut }, // 50
      { &KoWmfReadPrivate::setDibToDev }, // 51
      { &KoWmfReadPrivate::palette }, // 52
      { &KoWmfReadPrivate::palette }, // 53
      { &KoWmfReadPrivate::palette }, // 54
      { &KoWmfReadPrivate::palette }, // 55
      { &KoWmfReadPrivate::polyPolygon }, // 56
      { &KoWmfReadPrivate::palette }, // 57
      { 0 }, // 58
      { 0 }, // 59
      { 0 }, // 60
      { 0 }, // 61
      { 0 }, // 62
      { 0 }, // 63
      { &KoWmfReadPrivate::dibBitBlt }, // 64
      { &KoWmfReadPrivate::dibStretchBlt }, // 65
      { &KoWmfReadPrivate::dibCreatePatternBrush }, // 66
      { &KoWmfReadPrivate::stretchDib }, // 67
      { 0 }, // 68
      { 0 }, // 69
      { 0 }, // 70
      { 0 }, // 71
      { &KoWmfReadPrivate::extFloodFill }, // 72
      { 0 }, // 73
      { 0 }, // 74
      { 0 }, // 75
      { &KoWmfReadPrivate::resetDC }, // 76
      { &KoWmfReadPrivate::startDoc }, // 77
      { 0 }, // 78
      { &KoWmfReadPrivate::startPage }, // 79
      { &KoWmfReadPrivate::endPage }, // 80
      { 0 }, // 81
      { 0 }, // 82
      { 0 }, // 83
      { 0 }, // 84
      { 0 }, // 85
      { 0 }, // 86
      { 0 }, // 87
      { 0 }, // 88
      { 0 }, // 89
      { 0 }, // 90
      { 0 }, // 91
      { 0 }, // 92
      { 0 }, // 93
      { &KoWmfReadPrivate::endDoc }, // 94
      { 0 }, // 95
      // 0x5F last function until 0xF0
      { &KoWmfReadPrivate::deleteObject }, // 96
      { 0 }, // 97
      { 0 }, // 98
      { 0 }, // 99
      { 0 }, // 100
      { 0 }, // 101
      { 0 }, // 102
      { &KoWmfReadPrivate::createPalette }, // 103
      { &KoWmfReadPrivate::createBrush }, // 104
      { &KoWmfReadPrivate::createPatternBrush }, // 105
      { &KoWmfReadPrivate::createPenIndirect }, // 106
      { &KoWmfReadPrivate::createFontIndirect }, // 107
      { &KoWmfReadPrivate::createBrushIndirect }, //108
      { &KoWmfReadPrivate::createBitmapIndirect }, //109
      { &KoWmfReadPrivate::createBitmap }, // 110
      { &KoWmfReadPrivate::createRegion } // 111
    };


#endif

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