Module MaterialFX

Package io.github.palexdev.materialfx.skins

Class MFXSliderSkin.LayoutData

java.lang.Object

io.github.palexdev.materialfx.skins.MFXSliderSkin.LayoutData

Enclosing class:

MFXSliderSkin

protected class MFXSliderSkin.LayoutData
extends Object

Support class to the slider's skin. It helps manage/update info about layout such as: the x coordinate at zero value (or min if the min is greater than 0, or the max is lesser than 0, or the slider is se to be non-bidirectional), the thumb x and y coordinates, the bar width and bar x coordinate, the major ticks data (see MFXSliderSkin.TickData) and their y coordinate which is the same for all of them.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	LayoutData()

Method Summary

Modifier and Type	Method	Description
double	findNearestTick()	Gets the current slider's value, then creates a list with the ticks value obtained by mapping the MFXSliderSkin.TickData list with MFXSliderSkin.TickData.getTickVal(), calls NumberUtils.closestValueTo(double, List).
List<Node>	getTicks()	Returns all the ticks by mapping the MFXSliderSkin.TickData list with MFXSliderSkin.TickData.getTick().
double	halfThumbHeight()
double	halfThumbWidth()
void	positionTicks()	If the MFXSlider.showMajorTicksProperty() is set to false, does nothing.
void	update(boolean isFullUpdate)	Updated all the layout variables of this class.
void	updateTicksData()	Builds the major ticks and sets their style class to "tick-even" or "tick-odd" according to their index in the list.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

LayoutData

protected LayoutData()

Method Details

update

public void update(boolean isFullUpdate)

Updated all the layout variables of this class. If the isFullUpdate parameter is false the zeroPos is not recomputed. It also manages the MFXSlider.bidirectionalProperty() feature.

One thing I'm excited about this system is how the coordinates are computed. We heavily make use of NumberUtils.mapOneRangeToAnother(double, NumberRange, NumberRange, int). The sliders values can be negative or be way greater than the slider's width, that's why the slider's value should be mapped from the min-max range to the width range that goes from 0 to slider.getWidth().

updateTicksData

public void updateTicksData()

Builds the major ticks and sets their style class to "tick-even" or "tick-odd" according to their index in the list.

After building the ticks and their layout data (MFXSliderSkin.TickData, calls positionTicks().

positionTicks

public void positionTicks()

If the MFXSlider.showMajorTicksProperty() is set to false, does nothing.

For each previously built MFXSliderSkin.TickData adds the tick to the ticks container and sets their position, if MFXSlider.showTicksAtEdgesProperty() is set to false the ticks that represent the min and max values of the slider are not added.

findNearestTick

public double findNearestTick()

Gets the current slider's value, then creates a list with the ticks value obtained by mapping the MFXSliderSkin.TickData list with MFXSliderSkin.TickData.getTickVal(), calls NumberUtils.closestValueTo(double, List).

Returns:

the closest value from the current value and the list of the ticks values

getTicks

public List<Node> getTicks()

Returns all the ticks by mapping the MFXSliderSkin.TickData list with MFXSliderSkin.TickData.getTick().

halfThumbWidth

public double halfThumbWidth()

Returns:

half the width of the thumb

halfThumbHeight

public double halfThumbHeight()

Returns:

half the height of the thumb