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 | |
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DrawableWrapper(dr: Drawable?) Creates a new wrapper around the specified drawable. |
Public methods | |
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open Unit |
Applies the specified theme to this Drawable and its children. |
open Boolean | |
open Unit |
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 |
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 |
open Drawable? | |
open Unit |
getHotspotBounds(outRect: Rect) Populates |
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 |
invalidateDrawable(who: Drawable) Called when the drawable needs to be redrawn. |
open Boolean | |
open Unit | |
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 | |
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 |
Protected methods | |
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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 | |
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Public constructors
DrawableWrapper
DrawableWrapper(dr: Drawable?)
Creates a new wrapper around the specified drawable.
Parameters | |
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dr |
Drawable?: the drawable to wrap This value may be null . |
Public methods
applyTheme
open fun applyTheme(t: Resources.Theme): Unit
Applies the specified theme to this Drawable and its children.
Parameters | |
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t |
Resources.Theme: This value cannot be null . |
draw
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 | |
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canvas |
Canvas: This value cannot be null . |
getAlpha
open fun getAlpha(): Int
Return | |
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Int |
Value is between 0 and 255 inclusive |
getChangingConfigurations
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.
getColorFilter
open fun getColorFilter(): ColorFilter?
Return | |
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ColorFilter? |
the current color filter, or null if none set |
getConstantState
open fun getConstantState(): Drawable.ConstantState?
Return a ConstantState
instance that holds the shared state of this Drawable.
Return | |
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Drawable.ConstantState? |
This value may be null . |
getDrawable
open fun getDrawable(): Drawable?
Return | |
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Drawable? |
the wrapped drawable This value may be null . |
getHotspotBounds
open fun getHotspotBounds(outRect: Rect): Unit
Populates outRect
with the hotspot bounds.
Parameters | |
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outRect |
Rect: This value cannot be null . |
getIntrinsicHeight
open fun getIntrinsicHeight(): Int
Return | |
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Int |
the intrinsic height, or -1 if no intrinsic height |
getIntrinsicWidth
open fun getIntrinsicWidth(): Int
Return | |
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Int |
the intrinsic width, or -1 if no intrinsic width |
getOpacity
open fun getOpacity(): Int
Return | |
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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
open fun getOpticalInsets(): Insets
Return | |
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Insets |
This value cannot be null . |
getOutline
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 | |
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outline |
Outline: This value cannot be null . |
getPadding
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 | |
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padding |
Rect: This value cannot be null . |
Return | |
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Boolean |
true if this drawable actually has a padding, else false. When false is returned, the padding is always set to 0. |
hasFocusStateSpecified
open fun hasFocusStateSpecified(): Boolean
Return | |
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Boolean |
true if android.R.attr#state_focused is specified for this drawable. |
inflate
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 | |
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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 | |
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org.xmlpull.v1.XmlPullParserException |
|
java.io.IOException |
invalidateDrawable
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 | |
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who |
Drawable: This value cannot be null . |
isStateful
open fun isStateful(): Boolean
Return | |
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Boolean |
True if this drawable changes its appearance based on state, false otherwise. |
mutate
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 | |
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Drawable |
This value cannot be null . |
onLayoutDirectionChanged
open fun onLayoutDirectionChanged(layoutDirection: Int): Boolean
Called when the drawable's resolved layout direction changes.
Parameters | |
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layoutDirection |
Int: Value is android.view.View#LAYOUT_DIRECTION_LTR , or android.view.View#LAYOUT_DIRECTION_RTL |
Return | |
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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
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 | |
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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
open fun setAlpha(alpha: Int): Unit
Parameters | |
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alpha |
Int: Value is between 0 and 255 inclusive |
setColorFilter
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 | |
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colorFilter |
ColorFilter?: This value may be null . |
setDrawable
open fun setDrawable(dr: Drawable?): Unit
Sets the wrapped drawable.
Parameters | |
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dr |
Drawable?: the wrapped drawable This value may be null . |
setHotspot
open fun setHotspot(
x: Float,
y: Float
): Unit
Parameters | |
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x |
Float: The X coordinate of the center of the hotspot |
y |
Float: The Y coordinate of the center of the hotspot |
setHotspotBounds
open fun setHotspotBounds(
left: Int,
top: Int,
right: Int,
bottom: Int
): Unit
Parameters | |
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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
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 | |
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blendMode |
BlendMode!: This value cannot be null . |
setTintList
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 | |
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tint |
ColorStateList?: This value may be null . |
setVisible
open fun setVisible(
visible: Boolean,
restart: Boolean
): Boolean
Parameters | |
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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 | |
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Boolean |
boolean Returns true if the new visibility is different than its previous state. |
unscheduleDrawable
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 | |
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who |
Drawable: This value cannot be null . |
what |
Runnable: This value cannot be null . |
Protected methods
onBoundsChange
protected open fun onBoundsChange(bounds: Rect): Unit
Override this in your subclass to change appearance if you vary based on the bounds.
Parameters | |
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bounds |
Rect: This value cannot be null . |
onLevelChange
protected open fun onLevelChange(level: Int): Boolean
Return | |
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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
protected open fun onStateChange(state: IntArray): Boolean
Override this in your subclass to change appearance if you recognize the specified state.
Parameters | |
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state |
IntArray: This value cannot be null . |
Return | |
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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. |