androidx.constraintlayout.core.widgets.analyzer

Class DependencyGraph

java.lang.Object

androidx.constraintlayout.core.widgets.analyzer.DependencyGraph

public class DependencyGraph
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
DependencyGraph(ConstraintWidgetContainer container)

Method Summary

Modifier and Type	Method and Description
void	buildGraph()
void	buildGraph(java.util.ArrayList<WidgetRun> runs)
void	defineTerminalWidgets(ConstraintWidget.DimensionBehaviour horizontalBehavior, ConstraintWidget.DimensionBehaviour verticalBehavior) Find and mark terminal widgets (trailing widgets) -- they are the only ones we need to care for wrap_content checks
boolean	directMeasure(boolean optimizeWrap) Try to measure the layout by solving the graph of constraints directly
boolean	directMeasureSetup(boolean optimizeWrap)
boolean	directMeasureWithOrientation(boolean optimizeWrap, int orientation)
void	invalidateGraph() Invalidate the graph of constraints
void	invalidateMeasures() Mark the widgets as needing to be remeasured
void	measureWidgets()
void	setMeasurer(BasicMeasure.Measurer measurer)

Methods inherited from class java.lang.Object

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

Constructor Detail

DependencyGraph

public DependencyGraph(ConstraintWidgetContainer container)

Method Detail

setMeasurer

public void setMeasurer(BasicMeasure.Measurer measurer)

defineTerminalWidgets

public void defineTerminalWidgets(ConstraintWidget.DimensionBehaviour horizontalBehavior,
                                  ConstraintWidget.DimensionBehaviour verticalBehavior)

Find and mark terminal widgets (trailing widgets) -- they are the only ones we need to care for wrap_content checks

Parameters:

horizontalBehavior -

verticalBehavior -

directMeasure

public boolean directMeasure(boolean optimizeWrap)

Try to measure the layout by solving the graph of constraints directly

Parameters:

optimizeWrap - use the wrap_content optimizer

Returns:

true if all widgets have been resolved

directMeasureSetup

public boolean directMeasureSetup(boolean optimizeWrap)

directMeasureWithOrientation

public boolean directMeasureWithOrientation(boolean optimizeWrap,
                                            int orientation)

measureWidgets

public void measureWidgets()

invalidateGraph

public void invalidateGraph()

Invalidate the graph of constraints

invalidateMeasures

public void invalidateMeasures()

Mark the widgets as needing to be remeasured

buildGraph

public void buildGraph()

buildGraph

public void buildGraph(java.util.ArrayList<WidgetRun> runs)