package cc.shinichi.library.view.nine;
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import android.graphics.Camera;
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import android.graphics.Matrix;
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import android.graphics.RectF;
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import android.os.Build;
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import android.view.View;
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import android.view.animation.Animation;
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import android.view.animation.Transformation;
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import java.lang.ref.WeakReference;
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import java.util.WeakHashMap;
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/**
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* A proxy class to allow for modifying post-3.0 view properties on all pre-3.0
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* platforms. <strong>DO NOT</strong> wrap your views with this class if you
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* are using {@code ObjectAnimator} as it will handle that itself.
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*/
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public final class AnimatorProxy extends Animation {
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/**
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* Whether or not the current running platform needs to be proxied.
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*/
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@SuppressWarnings("deprecation")
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public static final boolean NEEDS_PROXY =
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Integer.valueOf(Build.VERSION.SDK).intValue() < Build.VERSION_CODES.HONEYCOMB;
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private static final WeakHashMap<View, AnimatorProxy> PROXIES = new WeakHashMap<View, AnimatorProxy>();
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private final WeakReference<View> mView;
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private final Camera mCamera = new Camera();
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private final RectF mBefore = new RectF();
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private final RectF mAfter = new RectF();
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private final Matrix mTempMatrix = new Matrix();
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private boolean mHasPivot;
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private float mAlpha = 1;
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private float mPivotX;
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private float mPivotY;
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private float mRotationX;
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private float mRotationY;
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private float mRotationZ;
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private float mScaleX = 1;
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private float mScaleY = 1;
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private float mTranslationX;
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private float mTranslationY;
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private AnimatorProxy(View view) {
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setDuration(0); //perform transformation immediately
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setFillAfter(true); //persist transformation beyond duration
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view.setAnimation(this);
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mView = new WeakReference<View>(view);
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}
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/**
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* Create a proxy to allow for modifying post-3.0 view properties on all
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* pre-3.0 platforms. <strong>DO NOT</strong> wrap your views if you are
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* using {@code ObjectAnimator} as it will handle that itself.
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*
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* @param view View to wrap.
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* @return Proxy to post-3.0 properties.
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*/
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public static AnimatorProxy wrap(View view) {
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AnimatorProxy proxy = PROXIES.get(view);
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// This checks if the proxy already exists and whether it still is the animation of the given view
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if (proxy == null || proxy != view.getAnimation()) {
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proxy = new AnimatorProxy(view);
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PROXIES.put(view, proxy);
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}
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return proxy;
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}
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public float getAlpha() {
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return mAlpha;
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}
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public void setAlpha(float alpha) {
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if (mAlpha != alpha) {
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mAlpha = alpha;
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View view = mView.get();
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if (view != null) {
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view.invalidate();
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}
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}
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}
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public float getPivotX() {
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return mPivotX;
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}
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public void setPivotX(float pivotX) {
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if (!mHasPivot || mPivotX != pivotX) {
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prepareForUpdate();
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mHasPivot = true;
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mPivotX = pivotX;
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invalidateAfterUpdate();
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}
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}
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public float getPivotY() {
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return mPivotY;
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}
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public void setPivotY(float pivotY) {
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if (!mHasPivot || mPivotY != pivotY) {
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prepareForUpdate();
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mHasPivot = true;
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mPivotY = pivotY;
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invalidateAfterUpdate();
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}
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}
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public float getRotation() {
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return mRotationZ;
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}
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public void setRotation(float rotation) {
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if (mRotationZ != rotation) {
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prepareForUpdate();
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mRotationZ = rotation;
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invalidateAfterUpdate();
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}
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}
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public float getRotationX() {
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return mRotationX;
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}
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public void setRotationX(float rotationX) {
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if (mRotationX != rotationX) {
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prepareForUpdate();
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mRotationX = rotationX;
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invalidateAfterUpdate();
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}
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}
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public float getRotationY() {
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return mRotationY;
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}
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public void setRotationY(float rotationY) {
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if (mRotationY != rotationY) {
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prepareForUpdate();
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mRotationY = rotationY;
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invalidateAfterUpdate();
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}
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}
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public float getScaleX() {
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return mScaleX;
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}
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public void setScaleX(float scaleX) {
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if (mScaleX != scaleX) {
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prepareForUpdate();
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mScaleX = scaleX;
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invalidateAfterUpdate();
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}
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}
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public float getScaleY() {
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return mScaleY;
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}
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public void setScaleY(float scaleY) {
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if (mScaleY != scaleY) {
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prepareForUpdate();
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mScaleY = scaleY;
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invalidateAfterUpdate();
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}
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}
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public int getScrollX() {
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View view = mView.get();
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if (view == null) {
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return 0;
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}
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return view.getScrollX();
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}
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public void setScrollX(int value) {
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View view = mView.get();
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if (view != null) {
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view.scrollTo(value, view.getScrollY());
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}
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}
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public int getScrollY() {
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View view = mView.get();
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if (view == null) {
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return 0;
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}
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return view.getScrollY();
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}
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public void setScrollY(int value) {
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View view = mView.get();
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if (view != null) {
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view.scrollTo(view.getScrollX(), value);
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}
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}
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public float getTranslationX() {
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return mTranslationX;
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}
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public void setTranslationX(float translationX) {
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if (mTranslationX != translationX) {
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prepareForUpdate();
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mTranslationX = translationX;
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invalidateAfterUpdate();
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}
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}
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public float getTranslationY() {
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return mTranslationY;
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}
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public void setTranslationY(float translationY) {
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if (mTranslationY != translationY) {
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prepareForUpdate();
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mTranslationY = translationY;
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invalidateAfterUpdate();
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}
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}
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public float getX() {
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View view = mView.get();
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if (view == null) {
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return 0;
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}
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return view.getLeft() + mTranslationX;
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}
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public void setX(float x) {
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View view = mView.get();
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if (view != null) {
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setTranslationX(x - view.getLeft());
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}
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}
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public float getY() {
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View view = mView.get();
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if (view == null) {
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return 0;
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}
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return view.getTop() + mTranslationY;
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}
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public void setY(float y) {
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View view = mView.get();
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if (view != null) {
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setTranslationY(y - view.getTop());
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}
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}
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private void prepareForUpdate() {
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View view = mView.get();
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if (view != null) {
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computeRect(mBefore, view);
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}
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}
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private void invalidateAfterUpdate() {
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View view = mView.get();
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if (view == null || view.getParent() == null) {
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return;
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}
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final RectF after = mAfter;
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computeRect(after, view);
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after.union(mBefore);
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((View) view.getParent()).invalidate((int) Math.floor(after.left), (int) Math.floor(after.top),
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(int) Math.ceil(after.right), (int) Math.ceil(after.bottom));
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}
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private void computeRect(final RectF r, View view) {
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// compute current rectangle according to matrix transformation
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final float w = view.getWidth();
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final float h = view.getHeight();
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// use a rectangle at 0,0 to make sure we don't run into issues with scaling
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r.set(0, 0, w, h);
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final Matrix m = mTempMatrix;
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m.reset();
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transformMatrix(m, view);
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mTempMatrix.mapRect(r);
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r.offset(view.getLeft(), view.getTop());
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// Straighten coords if rotations flipped them
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if (r.right < r.left) {
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final float f = r.right;
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r.right = r.left;
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r.left = f;
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}
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if (r.bottom < r.top) {
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final float f = r.top;
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r.top = r.bottom;
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r.bottom = f;
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}
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}
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private void transformMatrix(Matrix m, View view) {
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final float w = view.getWidth();
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final float h = view.getHeight();
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final boolean hasPivot = mHasPivot;
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final float pX = hasPivot ? mPivotX : w / 2f;
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final float pY = hasPivot ? mPivotY : h / 2f;
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final float rX = mRotationX;
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final float rY = mRotationY;
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final float rZ = mRotationZ;
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if ((rX != 0) || (rY != 0) || (rZ != 0)) {
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final Camera camera = mCamera;
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camera.save();
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camera.rotateX(rX);
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camera.rotateY(rY);
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camera.rotateZ(-rZ);
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camera.getMatrix(m);
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camera.restore();
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m.preTranslate(-pX, -pY);
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m.postTranslate(pX, pY);
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}
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final float sX = mScaleX;
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final float sY = mScaleY;
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if ((sX != 1.0f) || (sY != 1.0f)) {
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m.postScale(sX, sY);
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final float sPX = -(pX / w) * ((sX * w) - w);
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final float sPY = -(pY / h) * ((sY * h) - h);
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m.postTranslate(sPX, sPY);
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}
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m.postTranslate(mTranslationX, mTranslationY);
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}
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@Override
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protected void applyTransformation(float interpolatedTime, Transformation t) {
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View view = mView.get();
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if (view != null) {
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t.setAlpha(mAlpha);
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transformMatrix(t.getMatrix(), view);
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}
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}
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}
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