libreoffice/svx/inc/unoedhlp.hxx

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 * $RCSfile: unoedhlp.hxx,v $
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#ifndef _SVX_UNOEDHLP_HXX
#define _SVX_UNOEDHLP_HXX

#include <memory>
#include <tools/solar.h>
#include <svtools/textdata.hxx>
#include <svtools/hint.hxx>
#include <tools/gen.hxx>
#include "svx/svxdllapi.h"

struct EENotify;
class EditEngine;

#define EDITSOURCE_HINT_PARASMOVED          20
#define EDITSOURCE_HINT_SELECTIONCHANGED    21

/** Extends TextHint by two additional parameters which are necessary
    for the EDITSOURCE_HINT_PARASMOVED hint. TextHint's value in this
    case denotes the destination position, the two parameters the
    start and the end of the moved paragraph range.
 */
class SvxEditSourceHint : public TextHint
{
private:
    ULONG   mnStart;
    ULONG   mnEnd;

public:
            TYPEINFO();
            SvxEditSourceHint( ULONG nId );
            SvxEditSourceHint( ULONG nId, ULONG nValue, ULONG nStart=0, ULONG nEnd=0 );

    ULONG   GetValue() const;
    ULONG   GetStartValue() const;
    ULONG   GetEndValue() const;
    void    SetValue( ULONG n );
    void    SetStartValue( ULONG n );
    void    SetEndValue( ULONG n );
};

/** Helper class for common functionality in edit sources
 */
class SVX_DLLPUBLIC SvxEditSourceHelper
{
public:

    /** Translates EditEngine notifications into broadcastable hints

        @param aNotify
        Notification object send by the EditEngine.

        @return the translated hint
     */
    static ::std::auto_ptr<SfxHint> EENotification2Hint( EENotify* aNotify );

    /** Calculate attribute run for EditEngines

        Please note that the range returned is half-open: [nStartIndex,nEndIndex)

        @param nStartIndex
        Herein, the start index of the range of similar attributes is returned

        @param nEndIndex
        Herein, the end index (exclusive) of the range of similar attributes is returned

        @param rEE
        The EditEngine to query for attributes

        @param nPara
        The paragraph the following index value is to be interpreted in

        @param nIndex
        The character index from which the range of similar attributed characters is requested

        @return sal_True, if the range has been successfully determined
     */
    static sal_Bool GetAttributeRun( USHORT& nStartIndex, USHORT& nEndIndex, const EditEngine& rEE, USHORT nPara, USHORT nIndex );

    /** Convert point from edit engine to user coordinate space

        As the edit engine internally keeps vertical text unrotated,
        all internal edit engine methods return their stuff unrotated,
        too. This method rotates and shifts given point appropriately,
        if vertical writing is on.

        @param rPoint
        Point to transform

        @param rEESize
        Paper size of the edit engine

        @param  bIsVertical
        Whether output text is vertical or not

        @return the possibly transformed point
     */
    static Point EEToUserSpace( const Point& rPoint, const Size& rEESize, bool bIsVertical );

    /** Convert point from user to edit engine coordinate space

        As the edit engine internally keeps vertical text unrotated,
        all internal edit engine methods return their stuff unrotated,
        too. This method rotates and shifts given point appropriately,
        if vertical writing is on.

        @param rPoint
        Point to transform

        @param rEESize
        Paper size of the edit engine

        @param  bIsVertical
        Whether output text is vertical or not

        @return the possibly transformed point
     */
    static Point UserSpaceToEE( const Point& rPoint, const Size& rEESize, bool bIsVertical );

    /** Convert rect from edit engine to user coordinate space

        As the edit engine internally keeps vertical text unrotated,
        all internal edit engine methods return their stuff unrotated,
        too. This method rotates and shifts given rect appropriately,
        if vertical writing is on.

        @param rRect
        Rectangle to transform

        @param rEESize
        Paper size of the edit engine

        @param  bIsVertical
        Whether output text is vertical or not

        @return the possibly transformed rect
     */
    static Rectangle EEToUserSpace( const Rectangle& rRect, const Size& rEESize, bool bIsVertical );

    /** Convert rect from user to edit engine coordinate space

        As the edit engine internally keeps vertical text unrotated,
        all internal edit engine methods return their stuff unrotated,
        too. This method rotates and shifts given rect appropriately,
        if vertical writing is on.

        @param rRect
        Rectangle to transform

        @param rEESize
        Paper size of the edit engine

        @param  bIsVertical
        Whether output text is vertical or not

        @return the possibly transformed rect
     */
    static Rectangle UserSpaceToEE( const Rectangle& rRect, const Size& rEESize, bool bIsVertical );

};

#endif