Import Android SDK Platform PI [4335822]

/google/data/ro/projects/android/fetch_artifact \
    --bid 4335822 \
    --target sdk_phone_armv7-win_sdk \
    sdk-repo-linux-sources-4335822.zip

AndroidVersion.ApiLevel has been modified to appear as 28

Change-Id: Ic8f04be005a71c2b9abeaac754d8da8d6f9a2c32

1 files changed, 200 insertions, 0 deletions

diff --git a/android/transition/ChangeImageTransform.java b/android/transition/ChangeImageTransform.java
new file mode 100644
index 00000000..d7a91205
--- /dev/null
+++ b/android/transition/ChangeImageTransform.java
@@ -0,0 +1,200 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.transition;
+
+import android.animation.Animator;
+import android.animation.ObjectAnimator;
+import android.animation.TypeEvaluator;
+import android.content.Context;
+import android.graphics.Matrix;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
+import android.util.AttributeSet;
+import android.util.Property;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import java.util.Map;
+
+/**
+ * This Transition captures an ImageView's matrix before and after the
+ * scene change and animates it during the transition.
+ *
+ * <p>In combination with ChangeBounds, ChangeImageTransform allows ImageViews
+ * that change size, shape, or {@link android.widget.ImageView.ScaleType} to animate contents
+ * smoothly.</p>
+ */
+public class ChangeImageTransform extends Transition {
+
+    private static final String TAG = "ChangeImageTransform";
+
+    private static final String PROPNAME_MATRIX = "android:changeImageTransform:matrix";
+    private static final String PROPNAME_BOUNDS = "android:changeImageTransform:bounds";
+
+    private static final String[] sTransitionProperties = {
+            PROPNAME_MATRIX,
+            PROPNAME_BOUNDS,
+    };
+
+    private static TypeEvaluator<Matrix> NULL_MATRIX_EVALUATOR = new TypeEvaluator<Matrix>() {
+        @Override
+        public Matrix evaluate(float fraction, Matrix startValue, Matrix endValue) {
+            return null;
+        }
+    };
+
+    private static Property<ImageView, Matrix> ANIMATED_TRANSFORM_PROPERTY
+            = new Property<ImageView, Matrix>(Matrix.class, "animatedTransform") {
+        @Override
+        public void set(ImageView object, Matrix value) {
+            object.animateTransform(value);
+        }
+
+        @Override
+        public Matrix get(ImageView object) {
+            return null;
+        }
+    };
+
+    public ChangeImageTransform() {}
+
+    public ChangeImageTransform(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    private void captureValues(TransitionValues transitionValues) {
+        View view = transitionValues.view;
+        if (!(view instanceof ImageView) || view.getVisibility() != View.VISIBLE) {
+            return;
+        }
+        ImageView imageView = (ImageView) view;
+        Drawable drawable = imageView.getDrawable();
+        if (drawable == null) {
+            return;
+        }
+        Map<String, Object> values = transitionValues.values;
+
+        int left = view.getLeft();
+        int top = view.getTop();
+        int right = view.getRight();
+        int bottom = view.getBottom();
+
+        Rect bounds = new Rect(left, top, right, bottom);
+        values.put(PROPNAME_BOUNDS, bounds);
+        Matrix matrix;
+        ImageView.ScaleType scaleType = imageView.getScaleType();
+        if (scaleType == ImageView.ScaleType.FIT_XY) {
+            matrix = imageView.getImageMatrix();
+            if (!matrix.isIdentity()) {
+                matrix = new Matrix(matrix);
+            } else {
+                int drawableWidth = drawable.getIntrinsicWidth();
+                int drawableHeight = drawable.getIntrinsicHeight();
+                if (drawableWidth > 0 && drawableHeight > 0) {
+                    float scaleX = ((float) bounds.width()) / drawableWidth;
+                    float scaleY = ((float) bounds.height()) / drawableHeight;
+                    matrix = new Matrix();
+                    matrix.setScale(scaleX, scaleY);
+                } else {
+                    matrix = null;
+                }
+            }
+        } else {
+            matrix = new Matrix(imageView.getImageMatrix());
+        }
+        values.put(PROPNAME_MATRIX, matrix);
+    }
+
+    @Override
+    public void captureStartValues(TransitionValues transitionValues) {
+        captureValues(transitionValues);
+    }
+
+    @Override
+    public void captureEndValues(TransitionValues transitionValues) {
+        captureValues(transitionValues);
+    }
+
+    @Override
+    public String[] getTransitionProperties() {
+        return sTransitionProperties;
+    }
+
+    /**
+     * Creates an Animator for ImageViews moving, changing dimensions, and/or changing
+     * {@link android.widget.ImageView.ScaleType}.
+     *
+     * @param sceneRoot   The root of the transition hierarchy.
+     * @param startValues The values for a specific target in the start scene.
+     * @param endValues   The values for the target in the end scene.
+     * @return An Animator to move an ImageView or null if the View is not an ImageView,
+     * the Drawable changed, the View is not VISIBLE, or there was no change.
+     */
+    @Override
+    public Animator createAnimator(ViewGroup sceneRoot, TransitionValues startValues,
+            TransitionValues endValues) {
+        if (startValues == null || endValues == null) {
+            return null;
+        }
+        Rect startBounds = (Rect) startValues.values.get(PROPNAME_BOUNDS);
+        Rect endBounds = (Rect) endValues.values.get(PROPNAME_BOUNDS);
+        if (startBounds == null || endBounds == null) {
+            return null;
+        }
+
+        Matrix startMatrix = (Matrix) startValues.values.get(PROPNAME_MATRIX);
+        Matrix endMatrix = (Matrix) endValues.values.get(PROPNAME_MATRIX);
+
+        boolean matricesEqual = (startMatrix == null && endMatrix == null) ||
+                (startMatrix != null && startMatrix.equals(endMatrix));
+
+        if (startBounds.equals(endBounds) && matricesEqual) {
+            return null;
+        }
+
+        ImageView imageView = (ImageView) endValues.view;
+        Drawable drawable = imageView.getDrawable();
+        int drawableWidth = drawable.getIntrinsicWidth();
+        int drawableHeight = drawable.getIntrinsicHeight();
+
+        ObjectAnimator animator;
+        if (drawableWidth == 0 || drawableHeight == 0) {
+            animator = createNullAnimator(imageView);
+        } else {
+            if (startMatrix == null) {
+                startMatrix = Matrix.IDENTITY_MATRIX;
+            }
+            if (endMatrix == null) {
+                endMatrix = Matrix.IDENTITY_MATRIX;
+            }
+            ANIMATED_TRANSFORM_PROPERTY.set(imageView, startMatrix);
+            animator = createMatrixAnimator(imageView, startMatrix, endMatrix);
+        }
+        return animator;
+    }
+
+    private ObjectAnimator createNullAnimator(ImageView imageView) {
+        return ObjectAnimator.ofObject(imageView, ANIMATED_TRANSFORM_PROPERTY,
+                NULL_MATRIX_EVALUATOR, null, null);
+    }
+
+    private ObjectAnimator createMatrixAnimator(final ImageView imageView, Matrix startMatrix,
+            final Matrix endMatrix) {
+        return ObjectAnimator.ofObject(imageView, ANIMATED_TRANSFORM_PROPERTY,
+                new TransitionUtils.MatrixEvaluator(), startMatrix, endMatrix);
+    }
+}