ParagraphLayouter::Line Class Reference

A single line worth of VisualRuns. More...

#include <gfx_layout.h>

Inheritance diagram for ParagraphLayouter::Line:

Public Member Functions
virtual int	GetLeading () const =0
	Get the font leading, or distance between the baselines of consecutive lines.
virtual int	GetWidth () const =0
	Get the width of this line.
virtual size_t	CountRuns () const =0
	Get the number of runs in this line.
virtual const VisualRun &	GetVisualRun (size_t run) const =0
	Get a reference to the given run.
virtual int	GetInternalCharLength (char32_t c) const =0
	Get the number of elements the given character occupies in the underlying text buffer of the Layouter.

Detailed Description

A single line worth of VisualRuns.

Definition at line 174 of file gfx_layout.h.

Member Function Documentation

CountRuns()

virtual size_t ParagraphLayouter::Line::CountRuns ( ) const

pure virtual

Get the number of runs in this line.

Returns

The number of runs.

Implemented in CoreTextParagraphLayout::CoreTextLine, FallbackParagraphLayout::FallbackLine, ICUParagraphLayout::ICULine, and UniscribeParagraphLayout::UniscribeLine.

Referenced by DrawLayoutLine().

GetInternalCharLength()

virtual int ParagraphLayouter::Line::GetInternalCharLength ( char32_t c ) const

pure virtual

Get the number of elements the given character occupies in the underlying text buffer of the Layouter.

Many use UTF-16 internally, meaning a character larger than MAX_UINT16 occupies two places in its buffer.

Parameters

c	The character to get the length for.

Returns

The length.

Implemented in CoreTextParagraphLayout::CoreTextLine, FallbackParagraphLayout::FallbackLine, ICUParagraphLayout::ICULine, and UniscribeParagraphLayout::UniscribeLine.

GetLeading()

virtual int ParagraphLayouter::Line::GetLeading ( ) const

pure virtual

Get the font leading, or distance between the baselines of consecutive lines.

Returns

The leading in pixels, which is generally the maximum of all runs..

Implemented in CoreTextParagraphLayout::CoreTextLine, FallbackParagraphLayout::FallbackLine, ICUParagraphLayout::ICULine, and UniscribeParagraphLayout::UniscribeLine.

Referenced by DrawLayoutLine().

GetVisualRun()

virtual const VisualRun & ParagraphLayouter::Line::GetVisualRun ( size_t run ) const

pure virtual

Get a reference to the given run.

Parameters

run	The index into the runs.

Returns

The reference to the run.

Implemented in CoreTextParagraphLayout::CoreTextLine, FallbackParagraphLayout::FallbackLine, ICUParagraphLayout::ICULine, and UniscribeParagraphLayout::UniscribeLine.

Referenced by DrawLayoutLine().

GetWidth()

virtual int ParagraphLayouter::Line::GetWidth ( ) const

pure virtual

Get the width of this line.

Returns

The width of the line.

Implemented in CoreTextParagraphLayout::CoreTextLine, FallbackParagraphLayout::FallbackLine, ICUParagraphLayout::ICULine, and UniscribeParagraphLayout::UniscribeLine.

Referenced by DrawLayoutLine().

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

• src/gfx_layout.h