Added in API level 23

DrawableWrapper

---

Kotlin |Java

abstract class DrawableWrapper : Drawable, Drawable.Callback

kotlin.Any
↳	android.graphics.drawable.Drawable
	↳	android.graphics.drawable.DrawableWrapper

Known Direct Subclasses ClipDrawable, InsetDrawable, RotateDrawable, ScaleDrawable ClipDrawable A Drawable that clips another Drawable based on this Drawable's current level value. InsetDrawable A Drawable that insets another Drawable by a specified distance or fraction of the content bounds. RotateDrawable A Drawable that can rotate another Drawable based on the current level value. ScaleDrawable A Drawable that changes the size of another Drawable based on its current level value.

Drawable container with only one child element.

Summary

Public constructors
DrawableWrapper(dr: Drawable?) Creates a new wrapper around the specified drawable.

Public methods
open Unit	applyTheme(t: Resources.Theme) Applies the specified theme to this Drawable and its children.
open Boolean	canApplyTheme()
open Unit	draw(canvas: Canvas) Draw in its bounds (set via setBounds) respecting optional effects such as alpha (set via setAlpha) and color filter (set via setColorFilter).
open Int	getAlpha()
open Int	getChangingConfigurations() Return a mask of the configuration parameters for which this drawable may change, requiring that it be re-created.
open ColorFilter?	getColorFilter()
open Drawable.ConstantState?	getConstantState() Return a ConstantState instance that holds the shared state of this Drawable.
open Drawable?	getDrawable()
open Unit	getHotspotBounds(outRect: Rect) Populates outRect with the hotspot bounds.
open Int	getIntrinsicHeight()
open Int	getIntrinsicWidth()
open Int	getOpacity()
open Insets	getOpticalInsets()
open Unit	getOutline(outline: Outline) Called to get the drawable to populate the Outline that defines its drawing area.
open Boolean	getPadding(padding: Rect) Return in padding the insets suggested by this Drawable for placing content inside the drawable's bounds.
open Boolean	hasFocusStateSpecified()
open Unit	inflate(r: Resources, parser: XmlPullParser, attrs: AttributeSet, theme: Resources.Theme?) Inflate this Drawable from an XML resource optionally styled by a theme.
open Unit	invalidateDrawable(who: Drawable) Called when the drawable needs to be redrawn.
open Boolean	isStateful()
open Unit	jumpToCurrentState()
open Drawable	mutate() Make this drawable mutable.
open Boolean	onLayoutDirectionChanged(layoutDirection: Int) Called when the drawable's resolved layout direction changes.
open Unit	scheduleDrawable(who: Drawable, what: Runnable, when: Long) A Drawable can call this to schedule the next frame of its animation.
open Unit	setAlpha(alpha: Int)
open Unit	setColorFilter(colorFilter: ColorFilter?) Specify an optional color filter for the drawable.
open Unit	setDrawable(dr: Drawable?) Sets the wrapped drawable.
open Unit	setHotspot(x: Float, y: Float)
open Unit	setHotspotBounds(left: Int, top: Int, right: Int, bottom: Int)
open Unit	setTintBlendMode(blendMode: BlendMode!) Specifies a tint blending mode for this drawable.
open Unit	setTintList(tint: ColorStateList?) Specifies tint color for this drawable as a color state list.
open Boolean	setVisible(visible: Boolean, restart: Boolean)
open Unit	unscheduleDrawable(who: Drawable, what: Runnable) A Drawable can call this to unschedule an action previously scheduled with scheduleDrawable.

Protected methods
open Unit	onBoundsChange(bounds: Rect) Override this in your subclass to change appearance if you vary based on the bounds.
open Boolean	onLevelChange(level: Int)
open Boolean	onStateChange(state: IntArray) Override this in your subclass to change appearance if you recognize the specified state.

Inherited functions

From class Drawable Unit clearColorFilter() Removes the color filter for this drawable. Rect copyBounds() Return a copy of the drawable's bounds in a new Rect. This returns the same values as getBounds(), but the returned object is guaranteed to not be changed later by the drawable (i.e. it retains no reference to this rect). If the caller already has a Rect allocated, call copyBounds(rect). Unit copyBounds(bounds: Rect) Return a copy of the drawable's bounds in the specified Rect (allocated by the caller). The bounds specify where this will draw when its draw() method is called. Drawable? createFromPath(pathName: String!) Create a drawable from file path name. Drawable? createFromResourceStream(res: Resources?, value: TypedValue?, is: InputStream?, srcName: String?) Create a drawable from an inputstream, using the given resources and value to determine density information. Drawable? createFromResourceStream(res: Resources?, value: TypedValue?, is: InputStream?, srcName: String?, opts: BitmapFactory.Options?) Create a drawable from an inputstream, using the given resources and value to determine density information. Drawable? createFromStream(is: InputStream?, srcName: String?) Create a drawable from an inputstream Drawable createFromXml(r: Resources, parser: XmlPullParser) Create a drawable from an XML document. For more information on how to create resources in XML, see Drawable Resources. Drawable createFromXml(r: Resources, parser: XmlPullParser, theme: Resources.Theme?) Create a drawable from an XML document using an optional Theme. For more information on how to create resources in XML, see Drawable Resources. Drawable createFromXmlInner(r: Resources, parser: XmlPullParser, attrs: AttributeSet) Create from inside an XML document. Called on a parser positioned at a tag in an XML document, tries to create a Drawable from that tag. Returns null if the tag is not a valid drawable. Drawable createFromXmlInner(r: Resources, parser: XmlPullParser, attrs: AttributeSet, theme: Resources.Theme?) Create a drawable from inside an XML document using an optional Theme. Called on a parser positioned at a tag in an XML document, tries to create a Drawable from that tag. Returns null if the tag is not a valid drawable. Rect getBounds() Return the drawable's bounds Rect. Note: for efficiency, the returned object may be the same object stored in the drawable (though this is not guaranteed), so if a persistent copy of the bounds is needed, call copyBounds(rect) instead. You should also not change the object returned by this method as it may be the same object stored in the drawable. Drawable.Callback? getCallback() Return the current Callback implementation attached to this Drawable. Drawable getCurrent() Rect getDirtyBounds() Return the drawable's dirty bounds Rect. Note: for efficiency, the returned object may be the same object stored in the drawable (though this is not guaranteed). By default, this returns the full drawable bounds. Custom drawables may override this method to perform more precise invalidation. Int getLayoutDirection() Returns the resolved layout direction for this Drawable. Int getLevel() Retrieve the current level. Int getMinimumHeight() Returns the minimum height suggested by this Drawable. If a View uses this Drawable as a background, it is suggested that the View use at least this value for its height. (There will be some scenarios where this will not be possible.) This value should INCLUDE any padding. Int getMinimumWidth() Returns the minimum width suggested by this Drawable. If a View uses this Drawable as a background, it is suggested that the View use at least this value for its width. (There will be some scenarios where this will not be possible.) This value should INCLUDE any padding. IntArray getState() Describes the current state, as a union of primitive states, such as android.R.attr#state_focused, android.R.attr#state_selected, etc. Some drawables may modify their imagery based on the selected state. Region? getTransparentRegion() Returns a Region representing the part of the Drawable that is completely transparent. This can be used to perform drawing operations, identifying which parts of the target will not change when rendering the Drawable. The default implementation returns null, indicating no transparent region; subclasses can optionally override this to return an actual Region if they want to supply this optimization information, but it is not required that they do so. Unit inflate(r: Resources, parser: XmlPullParser, attrs: AttributeSet) Inflate this Drawable from an XML resource. Does not apply a theme. Unit invalidateSelf() Use the current Callback implementation to have this Drawable redrawn. Does nothing if there is no Callback attached to the Drawable. Boolean isAutoMirrored() Tells if this Drawable will be automatically mirrored when its layout direction is RTL right-to-left. See android.util.LayoutDirection. Boolean isFilterBitmap() Boolean isProjected() Whether this drawable requests projection. Indicates that the android.graphics.RenderNode this Drawable will draw into should be drawn immediately after the closest ancestor RenderNode containing a projection receiver. Boolean isVisible() Int resolveOpacity(op1: Int, op2: Int) Return the appropriate opacity value for two source opacities. If either is UNKNOWN, that is returned; else, if either is TRANSLUCENT, that is returned; else, if either is TRANSPARENT, that is returned; else, OPAQUE is returned. This is to help in implementing getOpacity. Unit scheduleSelf(what: Runnable, when: Long) Use the current Callback implementation to have this Drawable scheduled. Does nothing if there is no Callback attached to the Drawable. Unit setAutoMirrored(mirrored: Boolean) Set whether this Drawable is automatically mirrored when its layout direction is RTL (right-to left). See android.util.LayoutDirection. Unit setBounds(bounds: Rect) Specify a bounding rectangle for the Drawable. This is where the drawable will draw when its draw() method is called. Unit setBounds(left: Int, top: Int, right: Int, bottom: Int) Specify a bounding rectangle for the Drawable. This is where the drawable will draw when its draw() method is called. Unit setCallback(cb: Drawable.Callback?) Bind a Callback object to this Drawable. Required for clients that want to support animated drawables. Unit setChangingConfigurations(configs: Int) Set a mask of the configuration parameters for which this drawable may change, requiring that it be re-created. Unit setColorFilter(color: Int, mode: PorterDuff.Mode) Specify a color and Porter-Duff mode to be the color filter for this drawable. Convenience for setColorFilter(android.graphics.ColorFilter) which constructs a PorterDuffColorFilter. Note: Setting a color filter disables tint. Unit setDither(dither: Boolean) Set to true to have the drawable dither its colors when drawn to a device with fewer than 8-bits per color component. Unit setFilterBitmap(filter: Boolean) Set to true to have the drawable filter its bitmaps with bilinear sampling when they are scaled or rotated. This can improve appearance when bitmaps are rotated. If the drawable does not use bitmaps, this call is ignored. Boolean setLayoutDirection(layoutDirection: Int) Set the layout direction for this drawable. Should be a resolved layout direction, as the Drawable has no capacity to do the resolution on its own. Boolean setLevel(level: Int) Specify the level for the drawable. This allows a drawable to vary its imagery based on a continuous controller, for example to show progress or volume level. If the new level you are supplying causes the appearance of the Drawable to change, then it is responsible for calling invalidateSelf in order to have itself redrawn, and true will be returned from this function. Boolean setState(stateSet: IntArray) Specify a set of states for the drawable. These are use-case specific, so see the relevant documentation. As an example, the background for widgets like Button understand the following states: [android.R.attr#state_focused, android.R.attr#state_pressed]. If the new state you are supplying causes the appearance of the Drawable to change, then it is responsible for calling invalidateSelf in order to have itself redrawn, and true will be returned from this function. Note: The Drawable holds a reference on to stateSet until a new state array is given to it, so you must not modify this array during that time. Unit setTint(tintColor: Int) Specifies tint color for this drawable. A Drawable's drawing content will be blended together with its tint before it is drawn to the screen. This functions similarly to setColorFilter(int,android.graphics.PorterDuff.Mode). To clear the tint, pass null to setTintList(android.content.res.ColorStateList). Note: Setting a color filter via setColorFilter(android.graphics.ColorFilter) or setColorFilter(int,android.graphics.PorterDuff.Mode) overrides tint. Unit setTintMode(tintMode: PorterDuff.Mode?) Specifies a tint blending mode for this drawable. Defines how this drawable's tint color should be blended into the drawable before it is drawn to screen. Default tint mode is PorterDuff.Mode.SRC_IN. Note: Setting a color filter via setColorFilter(android.graphics.ColorFilter) or setColorFilter(int,android.graphics.PorterDuff.Mode) overrides tint. Unit unscheduleSelf(what: Runnable) Use the current Callback implementation to have this Drawable unscheduled. Does nothing if there is no Callback attached to the Drawable.

Public constructors

DrawableWrapper

Added in API level 23

DrawableWrapper(dr: Drawable?)

Creates a new wrapper around the specified drawable.

Parameters
dr	Drawable?: the drawable to wrap This value may be null.

Public methods

applyTheme

Added in API level 23

open fun applyTheme(t: Resources.Theme): Unit

Applies the specified theme to this Drawable and its children.

Parameters
t	Resources.Theme: This value cannot be null.

canApplyTheme

Added in API level 23

open fun canApplyTheme(): Boolean

draw

Added in API level 23

open fun draw(canvas: Canvas): Unit

Draw in its bounds (set via setBounds) respecting optional effects such as alpha (set via setAlpha) and color filter (set via setColorFilter).

Parameters
canvas	Canvas: This value cannot be null.

getAlpha

Added in API level 23

open fun getAlpha(): Int

Return
Int	Value is between 0 and 255 inclusive

getChangingConfigurations

Added in API level 23

open fun getChangingConfigurations(): Int

Return a mask of the configuration parameters for which this drawable may change, requiring that it be re-created. The default implementation returns whatever was provided through setChangingConfigurations(int) or 0 by default. Subclasses may extend this to or in the changing configurations of any other drawables they hold.

Return

Int

Value is either 0 or a combination of android.content.pm.ActivityInfo#CONFIG_MCC, android.content.pm.ActivityInfo#CONFIG_MNC, android.content.pm.ActivityInfo#CONFIG_LOCALE, android.content.pm.ActivityInfo#CONFIG_TOUCHSCREEN, android.content.pm.ActivityInfo#CONFIG_KEYBOARD, android.content.pm.ActivityInfo#CONFIG_KEYBOARD_HIDDEN, android.content.pm.ActivityInfo#CONFIG_NAVIGATION, android.content.pm.ActivityInfo#CONFIG_ORIENTATION, android.content.pm.ActivityInfo#CONFIG_SCREEN_LAYOUT, android.content.pm.ActivityInfo#CONFIG_UI_MODE, android.content.pm.ActivityInfo#CONFIG_SCREEN_SIZE, android.content.pm.ActivityInfo#CONFIG_SMALLEST_SCREEN_SIZE, android.content.pm.ActivityInfo#CONFIG_DENSITY, android.content.pm.ActivityInfo#CONFIG_LAYOUT_DIRECTION, android.content.pm.ActivityInfo#CONFIG_COLOR_MODE, android.content.pm.ActivityInfo#CONFIG_FONT_SCALE, android.content.pm.ActivityInfo#CONFIG_GRAMMATICAL_GENDER, android.content.pm.ActivityInfo#CONFIG_ASSETS_PATHS, and android.content.pm.ActivityInfo#CONFIG_RESOURCES_UNUSED

getColorFilter

Added in API level 23

open fun getColorFilter(): ColorFilter?

Return
ColorFilter?	the current color filter, or null if none set

getConstantState

Added in API level 23

open fun getConstantState(): Drawable.ConstantState?

Return a ConstantState instance that holds the shared state of this Drawable.

Return
Drawable.ConstantState?	This value may be null.

getDrawable

Added in API level 23

open fun getDrawable(): Drawable?

Return
Drawable?	the wrapped drawable This value may be null.

getHotspotBounds

Added in API level 23

open fun getHotspotBounds(outRect: Rect): Unit

Populates outRect with the hotspot bounds.

Parameters
outRect	Rect: This value cannot be null.

getIntrinsicHeight

Added in API level 23

open fun getIntrinsicHeight(): Int

Return
Int	the intrinsic height, or -1 if no intrinsic height

getIntrinsicWidth

Added in API level 23

open fun getIntrinsicWidth(): Int

Return
Int	the intrinsic width, or -1 if no intrinsic width

getOpacity

Added in API level 23

open fun getOpacity(): Int

Return
Int	int The opacity class of the Drawable. Value is android.graphics.PixelFormat#UNKNOWN, android.graphics.PixelFormat#TRANSLUCENT, android.graphics.PixelFormat#TRANSPARENT, or android.graphics.PixelFormat#OPAQUE

getOpticalInsets

Added in API level 29

open fun getOpticalInsets(): Insets

Return
Insets	This value cannot be null.

getOutline

Added in API level 23

open fun getOutline(outline: Outline): Unit

Called to get the drawable to populate the Outline that defines its drawing area.

This method is called by the default android.view.ViewOutlineProvider to define the outline of the View.

The default behavior defines the outline to be the bounding rectangle of 0 alpha. Subclasses that wish to convey a different shape or alpha value must override this method.

Parameters
outline	Outline: This value cannot be null.

getPadding

Added in API level 23

open fun getPadding(padding: Rect): Boolean

Return in padding the insets suggested by this Drawable for placing content inside the drawable's bounds. Positive values move toward the center of the Drawable (set Rect.inset).

Parameters
padding	Rect: This value cannot be null.

Return
Boolean	true if this drawable actually has a padding, else false. When false is returned, the padding is always set to 0.

hasFocusStateSpecified

Added in API level 31

open fun hasFocusStateSpecified(): Boolean

Return
Boolean	true if android.R.attr#state_focused is specified for this drawable.

inflate

Added in API level 23

open fun inflate(
    r: Resources, 
    parser: XmlPullParser, 
    attrs: AttributeSet, 
    theme: Resources.Theme?
): Unit

Inflate this Drawable from an XML resource optionally styled by a theme. This can't be called more than once for each Drawable. Note that framework may have called this once to create the Drawable instance from XML resource.

Parameters
r	Resources: This value cannot be null.
parser	XmlPullParser: This value cannot be null.
attrs	AttributeSet: This value cannot be null.
theme	Resources.Theme?: This value may be null.

Exceptions
org.xmlpull.v1.XmlPullParserException
java.io.IOException

invalidateDrawable

Added in API level 23

open fun invalidateDrawable(who: Drawable): Unit

Called when the drawable needs to be redrawn. A view at this point should invalidate itself (or at least the part of itself where the drawable appears).

Parameters
who	Drawable: This value cannot be null.

isStateful

Added in API level 23

open fun isStateful(): Boolean

Return
Boolean	True if this drawable changes its appearance based on state, false otherwise.

jumpToCurrentState

Added in API level 23

open fun jumpToCurrentState(): Unit

mutate

Added in API level 23

open fun mutate(): Drawable

Make this drawable mutable. This operation cannot be reversed. A mutable drawable is guaranteed to not share its state with any other drawable. This is especially useful when you need to modify properties of drawables loaded from resources. By default, all drawables instances loaded from the same resource share a common state; if you modify the state of one instance, all the other instances will receive the same modification. Calling this method on a mutable Drawable will have no effect.

Return
Drawable	This value cannot be null.

onLayoutDirectionChanged

Added in API level 23

open fun onLayoutDirectionChanged(layoutDirection: Int): Boolean

Called when the drawable's resolved layout direction changes.

Parameters
layoutDirection	Int: Value is android.view.View#LAYOUT_DIRECTION_LTR, or android.view.View#LAYOUT_DIRECTION_RTL

Return
Boolean	true if the layout direction change has caused the appearance of the drawable to change such that it needs to be re-drawn, false otherwise

scheduleDrawable

Added in API level 23

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

A Drawable can call this to schedule the next frame of its animation. An implementation can generally simply call android.os.Handler#postAtTime(Runnable, Object, long) with the parameters (what, who, when) to perform the scheduling.

Parameters
who	Drawable: This value cannot be null.
what	Runnable: This value cannot be null.
when	Long: The time (in milliseconds) to run. The timebase is android.os.SystemClock#uptimeMillis

setAlpha

Added in API level 23

open fun setAlpha(alpha: Int): Unit

Parameters
alpha	Int: Value is between 0 and 255 inclusive

setColorFilter

Added in API level 23

open fun setColorFilter(colorFilter: ColorFilter?): Unit

Specify an optional color filter for the drawable.

If a Drawable has a ColorFilter, each output pixel of the Drawable's drawing contents will be modified by the color filter before it is blended onto the render target of a Canvas.

Pass null to remove any existing color filter.

Note: Setting a non-null color filter disables tint.

Parameters
colorFilter	ColorFilter?: This value may be null.

setDrawable

Added in API level 23

open fun setDrawable(dr: Drawable?): Unit

Sets the wrapped drawable.

Parameters
dr	Drawable?: the wrapped drawable This value may be null.

setHotspot

Added in API level 23

open fun setHotspot(
    x: Float, 
    y: Float
): Unit

Parameters
x	Float: The X coordinate of the center of the hotspot
y	Float: The Y coordinate of the center of the hotspot

setHotspotBounds

Added in API level 23

open fun setHotspotBounds(
    left: Int, 
    top: Int, 
    right: Int, 
    bottom: Int
): Unit

Parameters
left	Int: position in pixels of the left bound
top	Int: position in pixels of the top bound
right	Int: position in pixels of the right bound
bottom	Int: position in pixels of the bottom bound

setTintBlendMode

Added in API level 29

open fun setTintBlendMode(blendMode: BlendMode!): Unit

Specifies a tint blending mode for this drawable.

Defines how this drawable's tint color should be blended into the drawable before it is drawn to screen. Default tint mode is BlendMode.SRC_IN.

Note: Setting a color filter via setColorFilter(android.graphics.ColorFilter)

Parameters
blendMode	BlendMode!: This value cannot be null.

setTintList

Added in API level 23

open fun setTintList(tint: ColorStateList?): Unit

Specifies tint color for this drawable as a color state list.

A Drawable's drawing content will be blended together with its tint before it is drawn to the screen. This functions similarly to setColorFilter(int,android.graphics.PorterDuff.Mode).

Note: Setting a color filter via setColorFilter(android.graphics.ColorFilter) or setColorFilter(int,android.graphics.PorterDuff.Mode) overrides tint.

Parameters
tint	ColorStateList?: This value may be null.

setVisible

Added in API level 23

open fun setVisible(
    visible: Boolean, 
    restart: Boolean
): Boolean

Parameters
visible	Boolean: Set to true if visible, false if not.
restart	Boolean: You can supply true here to force the drawable to behave as if it has just become visible, even if it had last been set visible. Used for example to force animations to restart.

Return
Boolean	boolean Returns true if the new visibility is different than its previous state.

unscheduleDrawable

Added in API level 23

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

A Drawable can call this to unschedule an action previously scheduled with scheduleDrawable. An implementation can generally simply call android.os.Handler#removeCallbacks(Runnable, Object) with the parameters (what, who) to unschedule the drawable.

Parameters
who	Drawable: This value cannot be null.
what	Runnable: This value cannot be null.

Protected methods

onBoundsChange

Added in API level 23

protected open fun onBoundsChange(bounds: Rect): Unit

Override this in your subclass to change appearance if you vary based on the bounds.

Parameters
bounds	Rect: This value cannot be null.

onLevelChange

Added in API level 23

protected open fun onLevelChange(level: Int): Boolean

Return
Boolean	Returns true if the level change has caused the appearance of the Drawable to change (that is, it needs to be drawn), else false if it looks the same and there is no need to redraw it since its last level.

onStateChange

Added in API level 23

protected open fun onStateChange(state: IntArray): Boolean

Override this in your subclass to change appearance if you recognize the specified state.

Parameters
state	IntArray: This value cannot be null.

Return
Boolean	Returns true if the state change has caused the appearance of the Drawable to change (that is, it needs to be drawn), else false if it looks the same and there is no need to redraw it since its last state.