RootDrawable

Class Overview

The root drawable of a DraweeHierarchy.

Root drawable has several functions:

• A hierarchy always has the same instance of a root drawable. That means that internal structural changes within the hierarchy don't require setting a new drawable to the view.
• Root drawable prevents intrinsic dimensions to escape the hierarchy. This in turn prevents view to do any erroneous scaling based on those intrinsic dimensions, as the hierarchy is in charge of all the required scaling.
• Root drawable is visibility aware. Visibility callback is used to attach the controller (if not already attached) when the hierarchy needs to be drawn. This prevents photo-not-loading issues in case attach event has not been called (for whatever reason). It also helps with memory management as the controller will get detached if the drawable is not visible.
• Root drawable supports controller overlay, a special overlay set by the controller. Typical usages are debugging, diagnostics and other cases where controller-specific overlay is required.

Summary

[Expand] Inherited Fields
From class com.facebook.drawee.drawable.ForwardingDrawable protected TransformCallback mTransformCallback

[Expand] Inherited Methods
From class com.facebook.drawee.drawable.ForwardingDrawable void draw(Canvas canvas) Drawable.ConstantState getConstantState() Drawable getCurrent() Drawable getDrawable() Gets the child drawable. int getIntrinsicHeight() int getIntrinsicWidth() int getOpacity() boolean getPadding(Rect padding) void getParentTransform(Matrix transform) void getRootBounds(RectF bounds) Called when the drawable needs to get its root bounds. void getTransform(Matrix transform) Called when the drawable needs to get all matrices applied to it. void getTransformedBounds(RectF outBounds) Gets the transformed bounds of this drawable. void invalidateDrawable(Drawable who) boolean isStateful() Drawable mutate() void onBoundsChange(Rect bounds) boolean onLevelChange(int level) boolean onStateChange(int[] state) void scheduleDrawable(Drawable who, Runnable what, long when) void setAlpha(int alpha) void setColorFilter(ColorFilter colorFilter) Drawable setCurrent(Drawable newDelegate) Sets a new drawable to be the delegate, and returns the old one (or null). Drawable setCurrentWithoutInvalidate(Drawable newDelegate) As setCurrent, but without invalidating a drawable. void setDither(boolean dither) Drawable setDrawable(Drawable newDrawable) Sets the new child drawable. void setFilterBitmap(boolean filterBitmap) void setHotspot(float x, float y) void setTransformCallback(TransformCallback transformCallback) Sets a transform callback. boolean setVisible(boolean visible, boolean restart) void unscheduleDrawable(Drawable who, Runnable what)
From class android.graphics.drawable.Drawable void applyTheme(Resources.Theme arg0) boolean canApplyTheme() void clearColorFilter() final Rect copyBounds() final void copyBounds(Rect arg0) static Drawable createFromPath(String arg0) static Drawable createFromResourceStream(Resources arg0, TypedValue arg1, InputStream arg2, String arg3, BitmapFactory.Options arg4) static Drawable createFromResourceStream(Resources arg0, TypedValue arg1, InputStream arg2, String arg3) static Drawable createFromStream(InputStream arg0, String arg1) static Drawable createFromXml(Resources arg0, XmlPullParser arg1) static Drawable createFromXml(Resources arg0, XmlPullParser arg1, Resources.Theme arg2) static Drawable createFromXmlInner(Resources arg0, XmlPullParser arg1, AttributeSet arg2, Resources.Theme arg3) static Drawable createFromXmlInner(Resources arg0, XmlPullParser arg1, AttributeSet arg2) abstract void draw(Canvas arg0) int getAlpha() final Rect getBounds() Drawable.Callback getCallback() int getChangingConfigurations() ColorFilter getColorFilter() Drawable.ConstantState getConstantState() Drawable getCurrent() Rect getDirtyBounds() void getHotspotBounds(Rect arg0) int getIntrinsicHeight() int getIntrinsicWidth() int getLayoutDirection() final int getLevel() int getMinimumHeight() int getMinimumWidth() abstract int getOpacity() void getOutline(Outline arg0) boolean getPadding(Rect arg0) int[] getState() Region getTransparentRegion() void inflate(Resources arg0, XmlPullParser arg1, AttributeSet arg2, Resources.Theme arg3) void inflate(Resources arg0, XmlPullParser arg1, AttributeSet arg2) void invalidateSelf() boolean isAutoMirrored() boolean isFilterBitmap() boolean isStateful() final boolean isVisible() void jumpToCurrentState() Drawable mutate() void onBoundsChange(Rect arg0) boolean onLayoutDirectionChanged(int arg0) boolean onLevelChange(int arg0) boolean onStateChange(int[] arg0) static int resolveOpacity(int arg0, int arg1) void scheduleSelf(Runnable arg0, long arg1) abstract void setAlpha(int arg0) void setAutoMirrored(boolean arg0) void setBounds(int arg0, int arg1, int arg2, int arg3) void setBounds(Rect arg0) final void setCallback(Drawable.Callback arg0) void setChangingConfigurations(int arg0) void setColorFilter(int arg0, PorterDuff.Mode arg1) abstract void setColorFilter(ColorFilter arg0) void setDither(boolean arg0) void setFilterBitmap(boolean arg0) void setHotspot(float arg0, float arg1) void setHotspotBounds(int arg0, int arg1, int arg2, int arg3) final boolean setLayoutDirection(int arg0) final boolean setLevel(int arg0) boolean setState(int[] arg0) void setTint(int arg0) void setTintList(ColorStateList arg0) void setTintMode(PorterDuff.Mode arg0) boolean setVisible(boolean arg0, boolean arg1) void unscheduleSelf(Runnable arg0)
From class java.lang.Object Object clone() boolean equals(Object arg0) void finalize() final Class<?> getClass() int hashCode() final void notify() final void notifyAll() String toString() final void wait(long arg0, int arg1) final void wait(long arg0) final void wait()
From interface android.graphics.drawable.Drawable.Callback abstract void invalidateDrawable(Drawable arg0) abstract void scheduleDrawable(Drawable arg0, Runnable arg1, long arg2) abstract void unscheduleDrawable(Drawable arg0, Runnable arg1)
From interface com.facebook.drawee.drawable.DrawableParent abstract Drawable getDrawable() Gets the child drawable. abstract Drawable setDrawable(Drawable newDrawable) Sets the new child drawable.
From interface com.facebook.drawee.drawable.TransformAwareDrawable abstract void setTransformCallback(TransformCallback transformCallback) Sets a transform callback.
From interface com.facebook.drawee.drawable.TransformCallback abstract void getRootBounds(RectF bounds) Called when the drawable needs to get its root bounds. abstract void getTransform(Matrix transform) Called when the drawable needs to get all matrices applied to it.
From interface com.facebook.drawee.drawable.VisibilityAwareDrawable abstract void setVisibilityCallback(VisibilityCallback visibilityCallback) Sets a visibility callback.