/** Initialize shadows, color overlay, and rounded corners. All are optional. */
void initialize(int shadowType, boolean hasColorDimOverlay, int roundedCornerRadius) {
if (mInitialized) {
throw new IllegalStateException();
}
mInitialized = true;
mRoundedCornerRadius = roundedCornerRadius;
mRoundedCorners = roundedCornerRadius > 0;
mShadowType = shadowType;
switch (mShadowType) {
case SHADOW_DYNAMIC:
mShadowImpl =
ShadowHelper.getInstance()
.addDynamicShadow(this, mUnfocusedZ, mFocusedZ, mRoundedCornerRadius);
break;
case SHADOW_STATIC:
mShadowImpl = StaticShadowHelper.getInstance().addStaticShadow(this);
break;
}
if (hasColorDimOverlay) {
setWillNotDraw(false);
mOverlayColor = Color.TRANSPARENT;
mOverlayPaint = new Paint();
mOverlayPaint.setColor(mOverlayColor);
mOverlayPaint.setStyle(Paint.Style.FILL);
} else {
setWillNotDraw(true);
mOverlayPaint = null;
}
}
/**
* {@link #prepareParentForShadow(ViewGroup)} must be called on parent of container before using
* shadow. Depending on sdk version, optical bounds might be applied to parent.
*/
public static void prepareParentForShadow(ViewGroup parent) {
StaticShadowHelper.getInstance().prepareParent(parent);
}
/** Return true if the platform sdk supports shadow. */
public static boolean supportsShadow() {
return StaticShadowHelper.getInstance().supportsShadow();
}