JavaFX 25 · com.sun.javafx.scene.control.ResizeHelper

Field Summary

Modifier and Type	Field and Description
private final List<? extends TableColumnBase<?, ?>>	columns
private final int	count
private static final double	EPSILON
private final double[]	max
private final double[]	min
private final ConstrainedColumnResize.ResizeMode	mode
private final double[]	pref
private final ResizeFeaturesBase<S>	rf
private final double[]	size
private final BitSet	skip
private static final int	SMALL_DELTA
private final Region	snap
private final double	target

Constructor Summary

Access	Constructor and Description
public	ResizeHelper(ResizeFeaturesBase<S> rf, double target, List<? extends TableColumnBase<?, ?>> columns, ConstrainedColumnResize.ResizeMode mode)

Method Summary

Modifier and Type	Method and Description
public boolean	Returns: true if sum of columns equals or greater than the target width applySizes() Applies computed column widths to the tree/table columns, snapping coordinates if required.
private double	avail(boolean grow, double[] desired, int ix)
private static double	clip(double v, double min, double max)
private double	computeAllowedDelta(boolean expanding) returns the allowable delta for all of the opposite columns
private void	distribute(double delta, double[] desired) distibuting delta (positive when growing and negative when shrinking)
private boolean	distributeDelta(int ix, double delta)
private double	distributeDeltaFlexHead(double delta)
private double	distributeDeltaFlexTail(double delta)
private void	distributeDeltaRemainingColumns(double delta)
private void	distributeLargeDelta(double delta, double[] desired)
private void	distributeSmallDelta(double delta)
private void	distributeSmallDelta(double delta, double[] desired) for small deltas, we use a simpler, but more expensive algorithm to distribute space in small steps, each time favoring a column that is further away from its desired width.
private double	getAllowedDelta(int ix, boolean expanding) non-negative
private boolean	isCornerCase(double delta, int ix)
private static boolean	isZero(double x)
private int	markOppositeColumns(int ix) updates skip bitset with columns that might be resized, and returns the number of the opposite columns
private double	resize(int ix, double delta)
public boolean	resizeColumn(TableColumnBase<?, ?> column)
public void	resizeToContentWidth()
private void	setSkip(int from, int toExclusive) range set with limit check
private boolean	Returns: true if no candidate has been found and the process should stop smallGrow(double delta, double[] desired) Finds the best column to grow, then increases its width by delta, which is expected to be one display pixel exactly.
private boolean	Returns: true if no candidate has been found and the process should stop smallShrink(double delta, double[] desired) Finds the best column to shrink, then reduces its width by delta, which is expected to be one display pixel exactly.
private double	snapCeil(double x)
private double	snapRound(double x)
private double	Returns: returns scene render scale x value snapScale() implementation copied from `Region`.
private double	sum(double[] widths)
private double	sumSizes()

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

Field Detail

columns	back to summary
private final List<? extends TableColumnBase<?, ?>> columns

count	back to summary
private final int count

EPSILON	back to summary
private static final double EPSILON

max	back to summary
private final double[] max

min	back to summary
private final double[] min

mode	back to summary
private final ConstrainedColumnResize.ResizeMode mode

pref	back to summary
private final double[] pref

rf	back to summary
private final ResizeFeaturesBase<S> rf

size	back to summary
private final double[] size

skip	back to summary
private final BitSet skip

SMALL_DELTA	back to summary
private static final int SMALL_DELTA

snap	back to summary
private final Region snap

target	back to summary
private final double target

Constructor Detail

ResizeHelper	back to summary
public ResizeHelper(ResizeFeaturesBase<S> rf, double target, List<? extends TableColumnBase<?, ?>> columns, ConstrainedColumnResize.ResizeMode mode)

Method Detail

applySizes	back to summary
public boolean applySizes() Applies computed column widths to the tree/table columns, snapping coordinates if required. Returns:boolean true if sum of columns equals or greater than the target width

applySizes

back to summary

public boolean applySizes()

Applies computed column widths to the tree/table columns, snapping coordinates if required.

Returns:boolean: true if sum of columns equals or greater than the target width

avail	back to summary
private double avail(boolean grow, double[] desired, int ix)

clip	back to summary
private static double clip(double v, double min, double max)

computeAllowedDelta	back to summary
private double computeAllowedDelta(boolean expanding) returns the allowable delta for all of the opposite columns

distribute	back to summary
private void distribute(double delta, double[] desired) distibuting delta (positive when growing and negative when shrinking)

distributeDelta	back to summary
private boolean distributeDelta(int ix, double delta)

distributeDeltaFlexHead	back to summary
private double distributeDeltaFlexHead(double delta)

distributeDeltaFlexTail	back to summary
private double distributeDeltaFlexTail(double delta)

distributeDeltaRemainingColumns	back to summary
private void distributeDeltaRemainingColumns(double delta)

distributeLargeDelta	back to summary
private void distributeLargeDelta(double delta, double[] desired)

distributeSmallDelta	back to summary
private void distributeSmallDelta(double delta)

distributeSmallDelta	back to summary
private void distributeSmallDelta(double delta, double[] desired) for small deltas, we use a simpler, but more expensive algorithm to distribute space in small steps, each time favoring a column that is further away from its desired width.

getAllowedDelta	back to summary
private double getAllowedDelta(int ix, boolean expanding) non-negative

isCornerCase	back to summary
private boolean isCornerCase(double delta, int ix)

isZero	back to summary
private static boolean isZero(double x)

markOppositeColumns	back to summary
private int markOppositeColumns(int ix) updates skip bitset with columns that might be resized, and returns the number of the opposite columns

resize	back to summary
private double resize(int ix, double delta)

resizeColumn	back to summary
public boolean resizeColumn(TableColumnBase<?, ?> column)

resizeToContentWidth	back to summary
public void resizeToContentWidth()

setSkip	back to summary
private void setSkip(int from, int toExclusive) range set with limit check

smallGrow	back to summary
private boolean smallGrow(double delta, double[] desired) Finds the best column to grow, then increases its width by delta, which is expected to be one display pixel exactly. Returns:boolean true if no candidate has been found and the process should stop

smallGrow

back to summary

private boolean smallGrow(double delta, double[] desired)

Finds the best column to grow, then increases its width by delta, which is expected to be one display pixel exactly.

Returns:boolean: true if no candidate has been found and the process should stop

smallShrink	back to summary
private boolean smallShrink(double delta, double[] desired) Finds the best column to shrink, then reduces its width by delta, which is expected to be one display pixel exactly. Returns:boolean true if no candidate has been found and the process should stop

smallShrink

back to summary

private boolean smallShrink(double delta, double[] desired)

Finds the best column to shrink, then reduces its width by delta, which is expected to be one display pixel exactly.

Returns:boolean: true if no candidate has been found and the process should stop

snapCeil	back to summary
private double snapCeil(double x)

snapRound	back to summary
private double snapRound(double x)

snapScale back to summary

snapScale	back to summary
private double snapScale() implementation copied from `Region`. Returns:double returns scene render scale x value

private double snapScale()

implementation copied from Region.

Returns:double: returns scene render scale x value

sum	back to summary
private double sum(double[] widths)

sumSizes	back to summary
private double sumSizes()

public Class ResizeHelper

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail