DrawableContainer

DrawableContainer

DrawableContainer ()

applyTheme

void applyTheme (Resources.Theme theme)

Applies the specified theme to this Drawable and its children.

canApplyTheme

boolean canApplyTheme ()

draw

void 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).

getAlpha

int getAlpha ()

Gets the current alpha value for the drawable. 0 means fully transparent, 255 means fully opaque. This method is implemented by Drawable subclasses and the value returned is specific to how that class treats alpha. The default return value is 255 if the class does not override this method to return a value specific to its use of alpha.

getChangingConfigurations

int getChangingConfigurations ()

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.

getConstantState

Drawable.ConstantState getConstantState ()

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

getCurrent

Drawable getCurrent ()

getHotspotBounds

void getHotspotBounds (Rect outRect)

Populates outRect with the hotspot bounds.

getIntrinsicHeight

int getIntrinsicHeight ()

Returns the drawable's intrinsic height.

Intrinsic height is the height at which the drawable would like to be laid out, including any inherent padding. If the drawable has no intrinsic height, such as a solid color, this method returns -1.

getIntrinsicWidth

int getIntrinsicWidth ()

Returns the drawable's intrinsic width.

Intrinsic width is the width at which the drawable would like to be laid out, including any inherent padding. If the drawable has no intrinsic width, such as a solid color, this method returns -1.

getMinimumHeight

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.

getMinimumWidth

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.

getOpacity

int getOpacity ()

Return the opacity/transparency of this Drawable. The returned value is one of the abstract format constants in PixelFormat: UNKNOWN, TRANSLUCENT, TRANSPARENT, or OPAQUE.

An OPAQUE drawable is one that draws all all content within its bounds, completely covering anything behind the drawable. A TRANSPARENT drawable is one that draws nothing within its bounds, allowing everything behind it to show through. A TRANSLUCENT drawable is a drawable in any other state, where the drawable will draw some, but not all, of the content within its bounds and at least some content behind the drawable will be visible. If the visibility of the drawable's contents cannot be determined, the safest/best return value is TRANSLUCENT.

Generally a Drawable should be as conservative as possible with the value it returns. For example, if it contains multiple child drawables and only shows one of them at a time, if only one of the children is TRANSLUCENT and the others are OPAQUE then TRANSLUCENT should be returned. You can use the method resolveOpacity(int, int) to perform a standard reduction of two opacities to the appropriate single output.

Note that the returned value does not necessarily take into account a custom alpha or color filter that has been applied by the client through the setAlpha(int) or setColorFilter(ColorFilter) methods. Some subclasses, such as BitmapDrawable, ColorDrawable, and GradientDrawable, do account for the value of setAlpha(int), but the general behavior is dependent upon the implementation of the subclass.

getOutline

void getOutline (Outline outline)

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

This method is called by the default 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.

getPadding

boolean getPadding (Rect padding)

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).

invalidateDrawable

void invalidateDrawable (Drawable who)

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).

isAutoMirrored

boolean isAutoMirrored ()

Tells if this Drawable will be automatically mirrored when its layout direction is RTL right-to-left. See LayoutDirection.

isStateful

boolean isStateful ()

Indicates whether this drawable will change its appearance based on state. Clients can use this to determine whether it is necessary to calculate their state and call setState.

jumpToCurrentState

void jumpToCurrentState ()

If this Drawable does transition animations between states, ask that it immediately jump to the current state and skip any active animations.

mutate

Drawable mutate ()

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.

onLayoutDirectionChanged

boolean onLayoutDirectionChanged (int layoutDirection)

Called when the drawable's resolved layout direction changes.

scheduleDrawable

void scheduleDrawable (Drawable who, 
                Runnable what, 
                long when)

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

selectDrawable

boolean selectDrawable (int index)

Sets the currently displayed drawable by index.

If an invalid index is specified, the current drawable will be set to null and the index will be set to -1.

setAlpha

void setAlpha (int alpha)

Specify an alpha value for the drawable. 0 means fully transparent, and 255 means fully opaque.

setAutoMirrored

void setAutoMirrored (boolean mirrored)

Set whether this Drawable is automatically mirrored when its layout direction is RTL (right-to left). See LayoutDirection.

setColorFilter

void setColorFilter (ColorFilter colorFilter)

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.

setDither

void setDither (boolean dither)

This method is deprecated.
This property is ignored.

Set to true to have the drawable dither its colors when drawn to a device with fewer than 8-bits per color component.

setEnterFadeDuration

void setEnterFadeDuration (int ms)

Change the global fade duration when a new drawable is entering the scene.

setExitFadeDuration

void setExitFadeDuration (int ms)

Change the global fade duration when a new drawable is leaving the scene.

setHotspot

void setHotspot (float x, 
                float y)

Specifies the hotspot's location within the drawable.

setHotspotBounds

void setHotspotBounds (int left, 
                int top, 
                int right, 
                int bottom)

Sets the bounds to which the hotspot is constrained, if they should be different from the drawable bounds.

setTintList

void setTintList (ColorStateList tint)

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, PorterDuff.Mode).

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

setTintMode

void setTintMode (PorterDuff.Mode tintMode)

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 SRC_IN.

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

setVisible

boolean setVisible (boolean visible, 
                boolean restart)

Set whether this Drawable is visible. This generally does not impact the Drawable's behavior, but is a hint that can be used by some Drawables, for example, to decide whether run animations.

unscheduleDrawable

void unscheduleDrawable (Drawable who, 
                Runnable what)

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

onBoundsChange

void onBoundsChange (Rect bounds)

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

onLevelChange

boolean onLevelChange (int level)

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

onStateChange

boolean onStateChange (int[] state)

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

setConstantState

void setConstantState (DrawableContainer.DrawableContainerState state)