ViewOutlineProvider

Kotlin |Java

abstract class ViewOutlineProvider

kotlin.Any
↳	android.view.ViewOutlineProvider

Known Direct Subclasses

RemoteViews.RemoteViewOutlineProvider

OutlineProvider for a view with a radius set by setViewOutlinePreferredRadius(int,float,int).

Interface by which a View builds its Outline, used for shadow casting and clipping.

Summary

Public constructors
`ViewOutlineProvider()`

Public methods
abstract Unit	`getOutline(view: View!, outline: Outline!)` Called to get the provider to populate the Outline.

Properties
static ViewOutlineProvider!	`BACKGROUND` Default outline provider for Views, which queries the Outline from the View's background, or generates a 0 alpha, rectangular Outline the size of the View if a background isn't present.
static ViewOutlineProvider!	`BOUNDS` Maintains the outline of the View to match its rectangular bounds, at `1.0f` alpha.
static ViewOutlineProvider!	`PADDED_BOUNDS` Maintains the outline of the View to match its rectangular padded bounds, at `1.0f` alpha.

Public constructors

ViewOutlineProvider

ViewOutlineProvider()

Public methods

getOutline

Added in API level 21

abstract fun getOutline(
    view: View!, 
    outline: Outline!
): Unit

Called to get the provider to populate the Outline. This method will be called by a View when its owned Drawables are invalidated, when the View's size changes, or if View.invalidateOutline() is called explicitly. The input outline is empty and has an alpha of 1.0f.

Parameters
`view`	View!: The view building the outline.
`outline`	Outline!: The empty outline to be populated.

Properties

BACKGROUND

Added in API level 21

static val BACKGROUND: ViewOutlineProvider!

Default outline provider for Views, which queries the Outline from the View's background, or generates a 0 alpha, rectangular Outline the size of the View if a background isn't present.

See Also

android.graphics.drawable.Drawable#getOutline(Outline)

BOUNDS

Added in API level 21

static val BOUNDS: ViewOutlineProvider!

Maintains the outline of the View to match its rectangular bounds, at 1.0f alpha. This can be used to enable Views that are opaque but lacking a background cast a shadow.

PADDED_BOUNDS

Added in API level 21

static val PADDED_BOUNDS: ViewOutlineProvider!

Maintains the outline of the View to match its rectangular padded bounds, at 1.0f alpha. This can be used to enable Views that are opaque but lacking a background cast a shadow.