ViewOutlineProvider
abstract class ViewOutlineProvider
| kotlin.Any | |
| ↳ | android.view.ViewOutlineProvider |
Interface by which a View builds its Outline, used for shadow casting and clipping.
Summary
| Public constructors | |
|---|---|
| Public methods | |
|---|---|
| abstract Unit |
getOutline(view: View!, outline: Outline!)Called to get the provider to populate the Outline. |
| Properties | |
|---|---|
| static 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. |
| static ViewOutlineProvider! |
Maintains the outline of the View to match its rectangular bounds, at |
| static ViewOutlineProvider! |
Maintains the outline of the View to match its rectangular padded bounds, at |
Public constructors
ViewOutlineProvider
ViewOutlineProvider()
Public methods
getOutline
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
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.
BOUNDS
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
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.