SLCLineBreaker.h

//========================================================================================
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// Owner: Adobe Developer Technologies
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// Copyright 1997-2010 Adobe Systems Incorporated. All rights reserved.
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// NOTICE: Adobe permits you to use, modify, and distribute this file in accordance 
// with the terms of the Adobe license agreement accompanying it. If you have received
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#ifndef __SLCLineBreaker_h__
#define __SLCLineBreaker_h__

#include "IParagraphComposer.h"

class IComposeScanner;
class IWaxLine;
class IDrawingStyle;
class SLCTileMeasure;
class SLCTileManager;

class SLCLineBreaker
{
public:
 SLCLineBreaker(void) : fComposeScanner(nil), fFirstLine(kFalse), fTextIndex(0), fGridAlignmentMetric(Text::kGANone)
 {
 }

 virtual ~SLCLineBreaker(void)
 {
 }

 virtual bool16 Recompose(IParagraphComposer::RecomposeHelper* helper);

private:
 SLComposerStatusCode Initialise(const IParagraphComposer::RecomposeHelper* helper, ParcelKey parcelKey);

 void Finish(void);

 Text::GridAlignmentMetric GetGridAlignmentMetric(IDrawingStyle* drawingStyle);

 virtual IWaxLine* ComposeLine(const TextIndex& startingIndex);

 virtual SLComposerStatusCode GetTiles(void);

 virtual SLComposerStatusCode FillLine(void);

 virtual SLComposerStatusCode FillTile(SLCTileMeasure& tile);

 virtual SLComposerStatusCode ProcessGlyphNodes(int32 fromGlyphNodeIndex);

 virtual SLComposerStatusCode FindTextBreak(int32 fromGlyphNodeIndex);

 IWaxLine* CreateWaxLine(void);

 virtual void UpdateLineHeight(const SLCGlyphNode* glyphNode);

 bool16 IsStoryOverset(void) const;

 IComposeScanner* fComposeScanner;

 bool16 fFirstLine;

 SLCLineMetrics fLineMetrics;

 TextIndex fTextIndex;

 PMReal fYPosition;

 PMReal fXPosition;

 Text::GridAlignmentMetric fGridAlignmentMetric; 

 SLCTileManager fSLCTileManager;

 SLCGlyphNodeList fGlyphNodeList;

};

#endif // __SLCLineBreaker_h__

// End, SLCLineBreaker.h