/*
* 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 com.glview.transition;
import com.glview.animation.Animator;
import com.glview.animation.AnimatorSet;
import com.glview.graphics.Bitmap;
import com.glview.view.View;
import com.glview.view.ViewGroup;
import com.glview.widget.ImageView;
/**
* Static utility methods for Transitions.
*
* @hide
*/
public class TransitionUtils {
private static int MAX_IMAGE_SIZE = (1024 * 1024);
static Animator mergeAnimators(Animator animator1, Animator animator2) {
if (animator1 == null) {
return animator2;
} else if (animator2 == null) {
return animator1;
} else {
AnimatorSet animatorSet = new AnimatorSet();
animatorSet.playTogether(animator1, animator2);
return animatorSet;
}
}
public static Transition mergeTransitions(Transition... transitions) {
int count = 0;
int nonNullIndex = -1;
for (int i = 0; i < transitions.length; i++) {
if (transitions[i] != null) {
count++;
nonNullIndex = i;
}
}
if (count == 0) {
return null;
}
if (count == 1) {
return transitions[nonNullIndex];
}
TransitionSet transitionSet = new TransitionSet();
for (int i = 0; i < transitions.length; i++) {
if (transitions[i] != null) {
transitionSet.addTransition(transitions[i]);
}
}
return transitionSet;
}
/**
* Creates a View using the bitmap copy of <code>view</code>. If <code>view</code> is large,
* the copy will use a scaled bitmap of the given view.
*
* @param sceneRoot The ViewGroup in which the view copy will be displayed.
* @param view The view to create a copy of.
* @param parent The parent of view.
*/
public static View copyViewImage(ViewGroup sceneRoot, View view, View parent) {
int left = view.getLeft();
int top = view.getTop();
int right = view.getRight();
int bottom = view.getBottom();
ImageView copy = new ImageView(view.getContext());
copy.setScaleType(ImageView.ScaleType.CENTER_CROP);
Bitmap bitmap = view.getDrawingCache();
if (bitmap != null) {
copy.setImageBitmap(bitmap);
}
int widthSpec = View.MeasureSpec.makeMeasureSpec(right - left, View.MeasureSpec.EXACTLY);
int heightSpec = View.MeasureSpec.makeMeasureSpec(bottom - top, View.MeasureSpec.EXACTLY);
copy.measure(widthSpec, heightSpec);
copy.layout(left, top, right, bottom);
return copy;
}
/*public static class MatrixEvaluator implements TypeEvaluator<Matrix> {
float[] mTempStartValues = new float[9];
float[] mTempEndValues = new float[9];
Matrix mTempMatrix = new Matrix();
@Override
public Matrix evaluate(float fraction, Matrix startValue, Matrix endValue) {
startValue.getValues(mTempStartValues);
endValue.getValues(mTempEndValues);
for (int i = 0; i < 9; i++) {
float diff = mTempEndValues[i] - mTempStartValues[i];
mTempEndValues[i] = mTempStartValues[i] + (fraction * diff);
}
mTempMatrix.setValues(mTempEndValues);
return mTempMatrix;
}
}*/
}