DependencyGraph

Artifact: androidx.constraintlayout:constraintlayout-core

View Source

Added in 1.1.0-alpha13

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Kotlin |Java

class DependencyGraph

---

Summary

Public constructors
DependencyGraph(container: ConstraintWidgetContainer!)

Public functions
Unit	buildGraph()
Unit	buildGraph(runs: ArrayList<WidgetRun!>!)
Unit	defineTerminalWidgets(     horizontalBehavior: ConstraintWidget.DimensionBehaviour!,     verticalBehavior: ConstraintWidget.DimensionBehaviour! ) Find and mark terminal widgets (trailing widgets) -- they are the only ones we need to care for wrap_content checks
Boolean	directMeasure(optimizeWrap: Boolean) Try to measure the layout by solving the graph of constraints directly
Boolean	directMeasureSetup(optimizeWrap: Boolean)
Boolean	directMeasureWithOrientation(optimizeWrap: Boolean, orientation: Int)
Unit	invalidateGraph() Invalidate the graph of constraints
Unit	invalidateMeasures() Mark the widgets as needing to be remeasured
Unit	measureWidgets()
Unit	setMeasurer(measurer: BasicMeasure.Measurer!)

Public constructors

DependencyGraph

Added in 1.1.0-alpha13

DependencyGraph(container: ConstraintWidgetContainer!)

Public functions

buildGraph

Added in 1.1.0-alpha13

fun buildGraph(): Unit

buildGraph

Added in 1.1.0-alpha13

fun buildGraph(runs: ArrayList<WidgetRun!>!): Unit

defineTerminalWidgets

Added in 1.1.0-alpha13

fun defineTerminalWidgets(
    horizontalBehavior: ConstraintWidget.DimensionBehaviour!,
    verticalBehavior: ConstraintWidget.DimensionBehaviour!
): Unit

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

directMeasure

Added in 1.1.0-alpha13

fun directMeasure(optimizeWrap: Boolean): Boolean

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

Parameters
optimizeWrap: Boolean	use the wrap_content optimizer

Returns
Boolean	true if all widgets have been resolved

directMeasureSetup

Added in 1.1.0-alpha13

fun directMeasureSetup(optimizeWrap: Boolean): Boolean

directMeasureWithOrientation

Added in 1.1.0-alpha13

fun directMeasureWithOrientation(optimizeWrap: Boolean, orientation: Int): Boolean

invalidateGraph

Added in 1.1.0-alpha13

fun invalidateGraph(): Unit

Invalidate the graph of constraints

invalidateMeasures

Added in 1.1.0-alpha13

fun invalidateMeasures(): Unit

Mark the widgets as needing to be remeasured

measureWidgets

Added in 1.1.0-alpha13

fun measureWidgets(): Unit

setMeasurer

Added in 1.1.0-alpha13

fun setMeasurer(measurer: BasicMeasure.Measurer!): Unit