ViewOutlineProvider
abstract class 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 | |
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| 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.
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.