CompositeDrawable

Kotlin |Java

open class CompositeDrawable : Drawable, Callback

kotlin.Any
↳	android.graphics.drawable.Drawable
	↳	androidx.leanback.graphics.CompositeDrawable

Generic drawable class that can be composed of multiple children. Whenever the bounds changes for this class, it updates those of its children.

Summary

Nested classes
	`ChildDrawable` Wrapper class holding a drawable object and `BoundsRule` to update drawable bounds when parent bound changes.

Public constructors
`<init>()`

Public methods
open Unit	`addChildDrawable(drawable: Drawable!)` Adds the supplied region.
open Unit	`draw(canvas: Canvas)`
open Int	`getAlpha()`
open CompositeDrawable.ChildDrawable!	`getChildAt(index: Int)` Returns the `ChildDrawable` at the given index.
open Int	`getChildCount()` Returns the total number of children.
open ConstantState?	`getConstantState()`
open Drawable!	`getDrawable(index: Int)` Returns the `Drawable` for the given index.
open Int	`getOpacity()`
open Unit	`invalidateDrawable(who: Drawable)`
open Drawable	`mutate()`
open Unit	`removeChild(index: Int)` Removes the child corresponding to the given index.
open Unit	`removeDrawable(drawable: Drawable!)` Removes the given region.
open Unit	`scheduleDrawable(who: Drawable, what: Runnable, when: Long)`
open Unit	`setAlpha(alpha: Int)`
open Unit	`setChildDrawableAt(index: Int, drawable: Drawable!)` Sets the supplied region at given index.
open Unit	`setColorFilter(colorFilter: ColorFilter?)`
open Unit	`unscheduleDrawable(who: Drawable, what: Runnable)`

Protected methods
open Unit	`onBoundsChange(bounds: Rect!)`

CompositeDrawable()

open fun addChildDrawable(drawable: Drawable!): Unit

Adds the supplied region.

open fun draw(canvas: Canvas): Unit

open fun getAlpha(): Int

Return
`Int`	Alpha value between 0(inclusive) and 255(inclusive)

open fun getChildAt(index: Int): CompositeDrawable.ChildDrawable!

Returns the ChildDrawable at the given index.

open fun getChildCount(): Int

Returns the total number of children.

open fun getConstantState(): ConstantState?

open fun getDrawable(index: Int): Drawable!

Returns the Drawable for the given index.

open fun getOpacity(): Int

open fun invalidateDrawable(who: Drawable): Unit

open fun mutate(): Drawable

open fun removeChild(index: Int): Unit

Removes the child corresponding to the given index.

open fun removeDrawable(drawable: Drawable!): Unit

Removes the given region.

open fun scheduleDrawable(
    who: Drawable, 
    what: Runnable, 
    when: Long
): Unit

open fun setAlpha(alpha: Int): Unit

open fun setChildDrawableAt(
    index: Int, 
    drawable: Drawable!
): Unit

Sets the supplied region at given index.

open fun setColorFilter(colorFilter: ColorFilter?): Unit

open fun unscheduleDrawable(
    who: Drawable, 
    what: Runnable
): Unit

protected open fun onBoundsChange(bounds: Rect!): Unit