Package com.itextpdf.layout.renderer

Class GridTrackSizer

java.lang.Object

com.itextpdf.layout.renderer.GridTrackSizer

class GridTrackSizer
extends java.lang.Object

Class representing a track sizing algorithm.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	GridTrackSizer.CompareTracksByGrowthPotential
private static class	GridTrackSizer.ExtraSpaceShareFunctionParams
private static class	GridTrackSizer.GridItemContributionType
(package private) static class	GridTrackSizer.Track
(package private) static class	GridTrackSizer.TrackSizingResult

Field Summary

Fields

Modifier and Type	Field	Description
private float	availableSpace
private float	gap
private Grid	grid
private Grid.GridOrder	order
private java.util.Set<java.lang.Integer>	percentValueIndexes
private java.util.List<GridTrackSizer.Track>	tracks

Constructor Summary

Constructors

Constructor	Description
GridTrackSizer(Grid grid, java.util.List<GridValue> values, float gap, float availableSpace, Grid.GridOrder order)	Create a track sizing algorithm for given template.

Method Summary

Modifier and Type	Method	Description
private static float	affectedSizeForContribution(GridTrackSizer.Track track, GridTrackSizer.GridItemContributionType contributionType)
private float	calculateMinMaxContribution(GridCell cell, boolean minTypeContribution)	Calculate min or max contribution of a cell.
private float	determineFreeSpace()
private void	distributeExtraSpaceToTracks(float extraSpace, float flexFactorSum, GridTrackSizer.GridItemContributionType contributionType, java.util.List<GridTrackSizer.Track> tracksToGrow, java.util.List<GridTrackSizer.Track> tracksToGrowBeyondLimits, boolean isEqualDistribution)
private void	expandFlexibleTracks()
private static float	extraSpaceShare(GridTrackSizer.Track track, float growthPotential, boolean isEqualDistribution, GridTrackSizer.ExtraSpaceShareFunctionParams changedParams)
private float	findFrSize(java.util.List<GridTrackSizer.Track> affectedTracks, float leftoverSpace)
private java.util.List<GridTrackSizer.Track>	getSpannedTracks(GridCell cell)
private static void	growAffectedSizeByPlannedIncrease(GridTrackSizer.Track track, GridTrackSizer.GridItemContributionType contributionType)
private float	growthPotentialForSet(GridTrackSizer.Track track, GridTrackSizer.GridItemContributionType contributionType, boolean ignoreInfinitelyGrowable)
private void	increaseTrackSizesToAccommodateGridItems(java.util.List<GridCell> group, boolean isGroupSpanningFlexTrack, GridTrackSizer.GridItemContributionType contributionType)
private void	initializeTrackSizes()
private static boolean	isContributionAppliedToTrack(GridTrackSizer.Track track, GridTrackSizer.GridItemContributionType contributionType)
private static boolean	isDistributionForGrowthLimits(GridTrackSizer.GridItemContributionType contributionType)
private void	maximizeTracks()
private void	resolveIntrinsicTrackSizes()
private static boolean	shouldUsedSizeGrowBeyondLimit(GridTrackSizer.Track track, GridTrackSizer.GridItemContributionType contributionType)
(package private) GridTrackSizer.TrackSizingResult	sizeTracks()	Resolves template values and auto-values to point values.
private void	stretchAutoTracks()

Methods inherited from class java.lang.Object

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

Field Detail

grid

private final Grid grid

tracks

private final java.util.List<GridTrackSizer.Track> tracks

gap

private final float gap

availableSpace

private final float availableSpace

order

private final Grid.GridOrder order

percentValueIndexes

private final java.util.Set<java.lang.Integer> percentValueIndexes

Constructor Detail

GridTrackSizer

GridTrackSizer(Grid grid,
               java.util.List<GridValue> values,
               float gap,
               float availableSpace,
               Grid.GridOrder order)

Create a track sizing algorithm for given template.

Parameters:

grid - grid to process

values - template values

gap - gap between tracks

availableSpace - space to fit tracks on

order - grid order

Method Detail

sizeTracks

GridTrackSizer.TrackSizingResult sizeTracks()

Resolves template values and auto-values to point values.

Returns:

list of points, representing track sizes with expanded percentages in case of inline calculation.

stretchAutoTracks

private void stretchAutoTracks()

maximizeTracks

private void maximizeTracks()

expandFlexibleTracks

private void expandFlexibleTracks()

getSpannedTracks

private java.util.List<GridTrackSizer.Track> getSpannedTracks(GridCell cell)

determineFreeSpace

private float determineFreeSpace()

findFrSize

private float findFrSize(java.util.List<GridTrackSizer.Track> affectedTracks,
                         float leftoverSpace)

resolveIntrinsicTrackSizes

private void resolveIntrinsicTrackSizes()

increaseTrackSizesToAccommodateGridItems

private void increaseTrackSizesToAccommodateGridItems(java.util.List<GridCell> group,
                                                      boolean isGroupSpanningFlexTrack,
                                                      GridTrackSizer.GridItemContributionType contributionType)

growAffectedSizeByPlannedIncrease

private static void growAffectedSizeByPlannedIncrease(GridTrackSizer.Track track,
                                                      GridTrackSizer.GridItemContributionType contributionType)

distributeExtraSpaceToTracks

private void distributeExtraSpaceToTracks(float extraSpace,
                                          float flexFactorSum,
                                          GridTrackSizer.GridItemContributionType contributionType,
                                          java.util.List<GridTrackSizer.Track> tracksToGrow,
                                          java.util.List<GridTrackSizer.Track> tracksToGrowBeyondLimits,
                                          boolean isEqualDistribution)

extraSpaceShare

private static float extraSpaceShare(GridTrackSizer.Track track,
                                     float growthPotential,
                                     boolean isEqualDistribution,
                                     GridTrackSizer.ExtraSpaceShareFunctionParams changedParams)

isDistributionForGrowthLimits

private static boolean isDistributionForGrowthLimits(GridTrackSizer.GridItemContributionType contributionType)

growthPotentialForSet

private float growthPotentialForSet(GridTrackSizer.Track track,
                                    GridTrackSizer.GridItemContributionType contributionType,
                                    boolean ignoreInfinitelyGrowable)

shouldUsedSizeGrowBeyondLimit

private static boolean shouldUsedSizeGrowBeyondLimit(GridTrackSizer.Track track,
                                                     GridTrackSizer.GridItemContributionType contributionType)

isContributionAppliedToTrack

private static boolean isContributionAppliedToTrack(GridTrackSizer.Track track,
                                                    GridTrackSizer.GridItemContributionType contributionType)

affectedSizeForContribution

private static float affectedSizeForContribution(GridTrackSizer.Track track,
                                                 GridTrackSizer.GridItemContributionType contributionType)

initializeTrackSizes

private void initializeTrackSizes()

calculateMinMaxContribution

private float calculateMinMaxContribution(GridCell cell,
                                          boolean minTypeContribution)

Calculate min or max contribution of a cell.

Parameters:

cell - cell to calculate contribution

minTypeContribution - type of contribution: min if true, max otherwise

Returns:

contribution value