VerticalRuler

Added in 1.7.0

Cmn
```
class VerticalRuler : Ruler
```

kotlin.Any
↳	androidx.compose.ui.layout.Ruler
	↳	androidx.compose.ui.layout.VerticalRuler

A vertical Ruler. Defines a line that can be used by parent layouts to align or position their children horizontally. The position of the ruler can be retrieved with Placeable.PlacementScope.current and can be set with MeasureScope.layout using RulerScope.provides or RulerScope.providesRelative.

Summary

Public companion functions
`VerticalRuler`	`derived(calculation: Placeable.PlacementScope.(defaultValue: Float) -> Float)` Creates a `VerticalRuler` whose values are derived from values available in the `PlacementScope`, such as other `VerticalRuler`s.	Cmn
`VerticalRuler`	`maxOf(vararg rulers: VerticalRuler)` Creates a `VerticalRuler` derived from the greater value of all `VerticalRuler`s in `rulers` that supply a value.	Cmn
`VerticalRuler`	`minOf(vararg rulers: VerticalRuler)` Creates a `VerticalRuler` derived from the least value of all `VerticalRuler`s in `rulers` that supply a value.	Cmn

Public constructors
`VerticalRuler()` Creates a `VerticalRuler` whose values are directly provided.	Cmn

Public companion functions

derived

Cmn

Added in 1.9.0-alpha01

fun derived(calculation: Placeable.PlacementScope.(defaultValue: Float) -> Float): VerticalRuler

Creates a VerticalRuler whose values are derived from values available in the PlacementScope, such as other VerticalRulers.

import androidx.compose.ui.layout.VerticalRuler
import androidx.compose.ui.unit.Dp

class PaddedRulers(val ruler: VerticalRuler, val padding: Dp) {
    val left =
        VerticalRuler.derived { defaultValue ->
            val rulerValue = ruler.current(Float.NaN)
            if (rulerValue.isNaN()) {
                defaultValue
            } else {
                rulerValue + padding.toPx()
            }
        }
    val right =
        VerticalRuler.derived { defaultValue ->
            val rulerValue = ruler.current(Float.NaN)
            if (rulerValue.isNaN()) {
                defaultValue
            } else {
                rulerValue - padding.toPx()
            }
        }
}

Parameters
`calculation: Placeable.PlacementScope.(defaultValue: Float) -> Float`	A function that calculates the value of the ruler

See also
`minOf`
`maxOf`

maxOf

Cmn

Added in 1.9.0-alpha01

fun maxOf(vararg rulers: VerticalRuler): VerticalRuler

Creates a VerticalRuler derived from the greater value of all VerticalRulers in rulers that supply a value. This is the bottom-most of all provided ruler values.

minOf

Cmn

Added in 1.9.0-alpha01

fun minOf(vararg rulers: VerticalRuler): VerticalRuler

Creates a VerticalRuler derived from the least value of all VerticalRulers in rulers that supply a value. This is the top-most of all provided ruler values.

Public constructors

VerticalRuler

Cmn

Added in 1.7.0

VerticalRuler()

Creates a VerticalRuler whose values are directly provided. The developer can set the ruler value in MeasureScope.layout using RulerScope.provides or RulerScope.providesRelative.