makVrv::DtTextLayout Class Reference

A class for rendering text objects using harfbuzz layout for right to left and left to right text shaping. More...

Inheritance diagram for makVrv::DtTextLayout:

Classes
struct	CharacterInformation
	Stucture that contains information about a particular character, color change or simple line/character advancement. More...
class	HarfBuzzShaper
struct	LineInformation
	Structure that contains information about the layout of a line of text. More...

Public Member Functions
	DtTextLayout ()
	CTOR.
virtual	~DtTextLayout ()
	DTOR.
virtual void	renderText (DtTexturedGlyphRenderer *, DtTextProxy *)
	Renders the text to the given glyph renderer.
virtual DtUnicode	bidiFix (const DtUnicode &) const
	Fixes the text for bi-directional issues. Currently only reverses numerals for right to left text.
virtual Dt2dPoint	calculateGlyphSize (const DtFontSP &font, const DtPen &pen, const DtUnicode &string, unsigned int pos=0, int len=-1)
	Calculates the bounding box for a string.
virtual DtBoundingBox	calculateBoundingBox (const DtFontSP &font, const DtPen &pen, const DtUnicode &string, unsigned int pos=0, int len=-1)
	Calculate the bounding box for a string.
virtual bool	isShaped (void) const
virtual void	layoutRightToLeft (const DtTextProxy *)
virtual void	layoutLeftToRight (const DtTextProxy *)
Public Member Functions inherited from makVrv::DtTextLayoutInterface
	DtTextLayoutInterface ()
	CTOR.
virtual	~DtTextLayoutInterface ()
	DTOR.

Protected Types
typedef std::vector < LineInformation >	Lines

Protected Member Functions
virtual bool	renderCharacter (DtGlyphRenderer &renderer, DtPen &pen, const DtFontSP &font, const unsigned int &character)
	Renders the character to the position specified by the pen.
virtual void	renderLayout (DtTexturedGlyphRenderer *, DtTextProxy *)
	Renders the laid out text to the given renderer.

Protected Attributes
HarfBuzzShaper	myShaper
std::vector< std::string >	myFontFilePaths
	Members that are used to store information about the last font/point size used.
unsigned int	myPointSize
DtUnicode	myLastStringRendered
DtUnicode	myRenderedText
Lines	myLines
double	myLineLength
bool	myRightToLeftLayout

Detailed Description

A class for rendering text objects using harfbuzz layout for right to left and left to right text shaping.

Member Typedef Documentation

typedef std::vector<LineInformation> makVrv::DtTextLayout::Lines

protected

Constructor & Destructor Documentation

makVrv::DtTextLayout::DtTextLayout

(

)

CTOR.

virtual makVrv::DtTextLayout::~DtTextLayout ( )

virtual

DTOR.

Member Function Documentation

virtual void makVrv::DtTextLayout::renderText ( DtTexturedGlyphRenderer *  , DtTextProxy *    )

virtual

Renders the text to the given glyph renderer.

Implements makVrv::DtTextLayoutInterface.

virtual DtUnicode makVrv::DtTextLayout::bidiFix ( const DtUnicode &  ) const

virtual

Fixes the text for bi-directional issues. Currently only reverses numerals for right to left text.

virtual Dt2dPoint makVrv::DtTextLayout::calculateGlyphSize ( const DtFontSP &  font, const DtPen &  pen, const DtUnicode &  string, unsigned int  pos = 0, int  len = -1  )

virtual

Calculates the bounding box for a string.

Implements makVrv::DtTextLayoutInterface.

virtual DtBoundingBox makVrv::DtTextLayout::calculateBoundingBox ( const DtFontSP &  font, const DtPen &  pen, const DtUnicode &  string, unsigned int  pos = 0, int  len = -1  )

virtual

Calculate the bounding box for a string.

Implements makVrv::DtTextLayoutInterface.

virtual bool makVrv::DtTextLayout::isShaped ( void  ) const

inlinevirtual

Implements makVrv::DtTextLayoutInterface.

virtual void makVrv::DtTextLayout::layoutRightToLeft ( const DtTextProxy *  )

virtual

virtual void makVrv::DtTextLayout::layoutLeftToRight ( const DtTextProxy *  )

virtual

virtual bool makVrv::DtTextLayout::renderCharacter ( DtGlyphRenderer &  renderer, DtPen &  pen, const DtFontSP &  font, const unsigned int &  character  )

protectedvirtual

Renders the character to the position specified by the pen.

virtual void makVrv::DtTextLayout::renderLayout ( DtTexturedGlyphRenderer *  , DtTextProxy *    )

protectedvirtual

Renders the laid out text to the given renderer.

Member Data Documentation

HarfBuzzShaper makVrv::DtTextLayout::myShaper

protected

std::vector<std::string> makVrv::DtTextLayout::myFontFilePaths

protected

Members that are used to store information about the last font/point size used.

Used for efficiency

unsigned int makVrv::DtTextLayout::myPointSize

protected

DtUnicode makVrv::DtTextLayout::myLastStringRendered

protected

DtUnicode makVrv::DtTextLayout::myRenderedText

protected

Lines makVrv::DtTextLayout::myLines

protected

double makVrv::DtTextLayout::myLineLength

protected

bool makVrv::DtTextLayout::myRightToLeftLayout

protected

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The documentation for this class was generated from the following file:

• /exports/nfedora7-1/nightly/docs/vrforcesDevelopment.tot/include/vrvGraphics/DtTextLayout.h