Selection Helper encapsulates the logic required to generate selection shapes. The goal is to find out which shapes correspond to the top-most and bottom-most text rows (in the presence of wrapping). These shapes (#) should be added to selection as is. Any space in between (x) would generate a single rectangular block that fills the width of the container. Additional shapes (#) will be added when necessary to make the selection appear contiguious. These shapes are positioned to the left or to the right of the selected text depending on the direction of text. TODO RTL text

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TODO this class can be static because everything happens in the FX app thread.

Modifier and Type	Class and Description
protected static interface	SelectionHelper.PathHandler

Field Summary

Modifier and Type	Field and Description
private double	bottomDn
private double	bottomLeft
private double	bottomRight
private double	bottomUp
private static final double	EPSILON
private final double	left
private final FxPathBuilder	pathBuilder
private final double	right
private double	topDn
private double	topLeft
private double	topRight
private double	topUp

Constructor Summary

Access	Constructor and Description
public	SelectionHelper(FxPathBuilder b, double left, double right)

Method Summary

Modifier and Type	Method and Description
private void	adjust(PathElement[] elements, double px, double py, double dx, double dy) adjusts for line spacing and left padding
private void	determineBottomXLimits(double x, double y)
private void	determineBottomYLimits(double x, double y)
private void	determineTopXLimits(double x, double y)
private void	determineTopYLimits(double x, double y)
public void	generate(PathElement[] top, PathElement[] bottom, boolean topLTR, boolean bottomLTR, double leftPadding, double lineSpacing)
private void	generateMiddle(boolean topLTR, boolean bottomLTR, double lineSpacing)
private boolean	isNear(double a, double b)
private void	process(PathElement[] elements, SelectionHelper.PathHandler h)
public String	toString() Overrides java.lang.Object.toString. Returns a string representation of the object.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll wait wait wait

Field Detail

bottomDn	back to summary
private double bottomDn

bottomLeft	back to summary
private double bottomLeft

bottomRight	back to summary
private double bottomRight

bottomUp	back to summary
private double bottomUp

EPSILON	back to summary
private static final double EPSILON

left	back to summary
private final double left

pathBuilder	back to summary
private final FxPathBuilder pathBuilder

right	back to summary
private final double right

topDn	back to summary
private double topDn

topLeft	back to summary
private double topLeft

topRight	back to summary
private double topRight

topUp	back to summary
private double topUp

Constructor Detail

SelectionHelper	back to summary
public SelectionHelper(FxPathBuilder b, double left, double right)

Method Detail

adjust	back to summary
private void adjust(PathElement[] elements, double px, double py, double dx, double dy) adjusts for line spacing and left padding

determineBottomXLimits	back to summary
private void determineBottomXLimits(double x, double y)

determineBottomYLimits	back to summary
private void determineBottomYLimits(double x, double y)

determineTopXLimits	back to summary
private void determineTopXLimits(double x, double y)

determineTopYLimits	back to summary
private void determineTopYLimits(double x, double y)

generate	back to summary
public void generate(PathElement[] top, PathElement[] bottom, boolean topLTR, boolean bottomLTR, double leftPadding, double lineSpacing)

generateMiddle	back to summary
private void generateMiddle(boolean topLTR, boolean bottomLTR, double lineSpacing)

isNear	back to summary
private boolean isNear(double a, double b)

process	back to summary
private void process(PathElement[] elements, SelectionHelper.PathHandler h)

toString back to summary

toString	back to summary
public String toString() Overrides java.lang.Object.toString. Doc from java.lang.Object.toString. Returns a string representation of the object. Satisfying this method's contract implies a non-`null` result must be returned. Annotations @Override

public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object. Satisfying this method's contract implies a non-null result must be returned.

Annotations