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List:       koffice-devel
Subject:    Re: Question about KoZoomHandler
From:       Boudewijn Rempt <boud () valdyas ! org>
Date:       2006-09-26 20:04:46
Message-ID: 200609262204.46189.boud () valdyas ! org
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On Tuesday 26 September 2006 22:00, Boudewijn Rempt wrote:

> or extract a KoAbstractZoomHandler from KoZoomHandler and make
> KoZoomHandler implement both KoAbstractZoomHandler and KoViewConverter, and
> create a KisZoomHandler that does the same. How would that be? I bet it
> will show up underlying undoxed assumptions in the use of KoZoomHandler in
> the rest of KOffice :-).

I could even do a conversion to and from postscript pt (72 to the inch, 
right?) where that's the given input and output, for instance in 

    // Input: pt. Output: pixels. Resolution and zoom are applied.
    int zoomItXOld( double z ) const {
        return qRound( m_zoomedResolutionX * z );
    }
    int zoomItYOld( double z ) const {
        return qRound( m_zoomedResolutionY * z );
    }
    double zoomItX( double z ) const {
        return m_zoomedResolutionX * z;
    }
    double zoomItY( double z ) const {
        return m_zoomedResolutionY * z ;
    }

    QPoint zoomPointOld( const KoPoint & p ) const {
        return QPoint( zoomItXOld( p.x() ), zoomItYOld( p.y() ) );
    }
    QRect zoomRectOld( const KoRect & r ) const {
        QRect _r;
        _r.setCoords( zoomItXOld( r.left() ),  zoomItYOld( r.top() ),
                      zoomItXOld( r.right() ), zoomItYOld( r.bottom() ) );
        return _r;
    }

Or does Old not mean the previous zoom level, but that these methods should be 
deprecated and/or removed?

-- 
Boudewijn Rempt 
http://www.valdyas.org/fading/index.cgi

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