porrst.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#ifndef INCLUDED_SW_SOURCE_CORE_TEXT_PORRST_HXX
#define INCLUDED_SW_SOURCE_CORE_TEXT_PORRST_HXX

#include <tools/gen.hxx>

#include <TextFrameIndex.hxx>
#include <txttypes.hxx>

#include "porlin.hxx"
#include "portxt.hxx"
#include "possiz.hxx"

class SwPortionHandler;
class SwTextPaintInfo;
class SwTextSizeInfo;

#define LINE_BREAK_WIDTH        150
#define SPECIAL_FONT_HEIGHT     200

class SwTextFormatInfo;

class SwTmpEndPortion : public SwLinePortion
{
public:
    explicit SwTmpEndPortion( const SwLinePortion &rPortion );
    virtual void Paint( const SwTextPaintInfo &rInf ) const override;
};

class SwBreakPortion : public SwLinePortion
{
public:
    explicit SwBreakPortion( const SwLinePortion &rPortion );
    // Returns 0 if we have no usable data
    virtual SwLinePortion *Compress() override;
    virtual void Paint( const SwTextPaintInfo &rInf ) const override;
    virtual bool Format( SwTextFormatInfo &rInf ) override;
    virtual sal_uInt16 GetViewWidth( const SwTextSizeInfo &rInf ) const override;
    virtual TextFrameIndex GetCursorOfst(sal_uInt16 nOfst) const override;

    // Accessibility: pass information about this portion to the PortionHandler
    virtual void HandlePortion( SwPortionHandler& rPH ) const override;
};

class SwKernPortion : public SwLinePortion
{
    short const nKern;
    bool const bBackground;
    bool const bGridKern;

public:

    // This constructor automatically appends the portion to rPortion
    // bBG indicates, that the background of the kerning portion has to
    // be painted, e.g., if the portion if positioned between to fields.
    // bGridKern indicates, that the kerning portion is used to provide
    // additional space in grid mode.
    SwKernPortion( SwLinePortion &rPortion, short nKrn,
                   bool bBG = false, bool bGridKern = false );

    // This constructor only sets the height and ascent to the values
    // of rPortion. It is only used for kerning portions for grid mode
    explicit SwKernPortion( const SwLinePortion &rPortion );

    virtual void FormatEOL( SwTextFormatInfo &rInf ) override;
    virtual void Paint( const SwTextPaintInfo &rInf ) const override;
};

class SwArrowPortion : public SwLinePortion
{
    Point aPos;
    bool const bLeft;
public:
    explicit SwArrowPortion( const SwLinePortion &rPortion );
    explicit SwArrowPortion( const SwTextPaintInfo &rInf );
    virtual void Paint( const SwTextPaintInfo &rInf ) const override;
    virtual SwLinePortion *Compress() override;
    bool IsLeft() const { return bLeft; }
    const Point& GetPos() const { return aPos; }
};

// The characters which are forbidden at the start of a line like the dot and
// other punctuation marks are allowed to display in the margin of the page
// by a user option.
// The SwHangingPortion is the corresponding textportion to do that.
class SwHangingPortion : public SwTextPortion
{
    sal_uInt16 const nInnerWidth;
public:
    explicit SwHangingPortion( SwPosSize aSize ) : nInnerWidth( aSize.Width() )
    {
        SetWhichPor( PortionType::Hanging );
        SetLen(TextFrameIndex(1));
        Height( aSize.Height() );
    }

    sal_uInt16 GetInnerWidth() const { return nInnerWidth; }
};

// Used to hide text
class SwHiddenTextPortion : public SwLinePortion
{
public:
    explicit SwHiddenTextPortion(TextFrameIndex const nLen)
    {
        SetWhichPor( PortionType::HiddenText );  SetLen( nLen );
    }

    virtual void Paint( const SwTextPaintInfo &rInf ) const override;
    virtual bool Format( SwTextFormatInfo &rInf ) override;
};

class SwControlCharPortion : public SwLinePortion
{

private:
    mutable sal_uInt16 mnViewWidth;            // used to cache a calculated value
    mutable sal_uInt16 mnHalfCharWidth;        // used to cache a calculated value
    sal_Unicode const mcChar;

public:

    explicit SwControlCharPortion( sal_Unicode cChar )
        : mnViewWidth( 0 ), mnHalfCharWidth( 0 ), mcChar( cChar )
    {
        SetWhichPor( PortionType::ControlChar ); SetLen( TextFrameIndex(1) );
    }

    virtual void Paint( const SwTextPaintInfo &rInf ) const override;
    virtual bool Format( SwTextFormatInfo &rInf ) override;
    virtual sal_uInt16 GetViewWidth( const SwTextSizeInfo& rInf ) const override;
};

#endif

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