Inkscape: Inkscape::Text::Layout::InfiniteScanlineMaker Class Reference

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#include <Layout-TNG-Scanline-Maker.h>

Inheritance diagram for Inkscape::Text::Layout::InfiniteScanlineMaker:

Public Member Functions
	InfiniteScanlineMaker (double initial_x, double initial_y, Layout::Direction block_progression)

	~InfiniteScanlineMaker () override

std::vector< ScanRun >	makeScanline (Layout::FontMetrics const &line_height) override
	Returns a single infinite run at the current location.

void	completeLine () override
	Increments the current y by the current line height.

double	yCoordinate () override
	Returns the y coordinate of the top of the scanline that will be returned by the next call to makeScanline().

void	setNewYCoordinate (double new_y) override
	Just changes y.

bool	canExtendCurrentScanline (Layout::FontMetrics const &line_height) override
	Always true, but has to save the new height.

void	setLineHeight (Layout::FontMetrics const &line_height) override
	Sets current line block height.

Public Member Functions inherited from Inkscape::Text::Layout::ScanlineMaker
virtual	~ScanlineMaker ()=default

Private Attributes
double	_x

double	_y

Layout::FontMetrics	_current_line_height

bool	_negative_block_progression

Detailed Description

private to Layout.

Generates infinite scanlines for when you don't want wrapping

This is a 'fake' scanline maker which will always return infinite results, effectively turning off wrapping. It's a very simple implementation.

It does have the curious property, however, that the input coordinates are 'real' x and y, but the outputs are rotated according to the block_progression.

Definition at line 93 of file Layout-TNG-Scanline-Maker.h.

Constructor & Destructor Documentation

◆ InfiniteScanlineMaker()

Inkscape::Text::Layout::InfiniteScanlineMaker::InfiniteScanlineMaker	(	double	initial_x,
		double	initial_y,
		Layout::Direction	block_progression
	)

Definition at line 22 of file Layout-TNG-Scanline-Makers.cpp.

References _current_line_height, _negative_block_progression, _x, _y, Inkscape::Text::Layout::BOTTOM_TO_TOP, Inkscape::Text::Layout::LEFT_TO_RIGHT, Inkscape::Text::Layout::RIGHT_TO_LEFT, and Inkscape::Text::Layout::FontMetrics::setZero().

◆ ~InfiniteScanlineMaker()

Inkscape::Text::Layout::InfiniteScanlineMaker::~InfiniteScanlineMaker ( )

overridedefault

Member Function Documentation

◆ canExtendCurrentScanline()

bool Inkscape::Text::Layout::InfiniteScanlineMaker::canExtendCurrentScanline ( Layout::FontMetrics const & line_height )

overridevirtual

Always true, but has to save the new height.

Implements Inkscape::Text::Layout::ScanlineMaker.

Definition at line 67 of file Layout-TNG-Scanline-Makers.cpp.

◆ completeLine()

void Inkscape::Text::Layout::InfiniteScanlineMaker::completeLine ( )

overridevirtual

Increments the current y by the current line height.

Implements Inkscape::Text::Layout::ScanlineMaker.

Definition at line 53 of file Layout-TNG-Scanline-Makers.cpp.

References Inkscape::Text::Layout::FontMetrics::emSize().

◆ makeScanline()

std::vector< Layout::ScanlineMaker::ScanRun > Inkscape::Text::Layout::InfiniteScanlineMaker::makeScanline ( Layout::FontMetrics const & line_height )

overridevirtual

Returns a single infinite run at the current location.

Implements Inkscape::Text::Layout::ScanlineMaker.

Definition at line 43 of file Layout-TNG-Scanline-Makers.cpp.

References _x.