Added in API level 23

DrawableWrapper


abstract class DrawableWrapper : Drawable, Drawable.Callback
kotlin.Any
   ↳ android.graphics.drawable.Drawable
   ↳ android.graphics.drawable.DrawableWrapper

Drawable container with only one child element.

Summary

Public constructors

Creates a new wrapper around the specified drawable.

Public methods
open Unit

Applies the specified theme to this Drawable and its children.

open Boolean

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

open Int

Return a mask of the configuration parameters for which this drawable may change, requiring that it be re-created.

open ColorFilter?

open Drawable.ConstantState?

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

open Drawable?

open Unit

Populates outRect with the hotspot bounds.

open Int

open Int

open Int

open Insets

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

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

Called when the drawable needs to be redrawn.

open Boolean

open Unit

open Drawable

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

Sets the wrapped drawable.

open Unit

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

open Unit

Specifies a tint blending mode for this drawable.

open Unit

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

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

open Unit

A Drawable can call this to unschedule an action previously scheduled with scheduleDrawable.

Protected methods
open Unit

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

open Boolean

open Boolean

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

Inherited functions

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

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

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.