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/*
* Copyright (C) 2013 The CyanogenMod 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 org.cyanogenmod.wallpapers.photophase.animations;
import android.view.View;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
/**
* A class that manages a flip 3d effect of two views
*/
public class Flip3dAnimationController {
private static final int DURATION = 200;
View mFront;
View mBack;
boolean mFrontFace;
final Object mLock = new Object();
/**
* Constructor of <code>Flip3dAnimationController</code>
*
* @param front The front view
* @param back The back view
*/
public Flip3dAnimationController(View front, View back) {
super();
mFront = front;
mBack = back;
mBack.setVisibility(View.GONE);
mFrontFace = true;
}
public boolean isFrontFace() {
return mFrontFace;
}
/**
* Method that reset the controller
*/
public void reset() {
changeToFrontFace(true);
}
/**
* Method that change the view to the front face
*
* @param animate Do with animation
*/
public void changeToFrontFace(boolean animate) {
if (!mFrontFace) {
if (animate) {
applyAnimation(true);
} else {
mBack.setVisibility(View.GONE);
mFront.setVisibility(View.VISIBLE);
mFrontFace = true;
}
}
}
/**
* Method that change the view to the back face
*
* @param animate Do with animation
*/
public void changeToBackFace(boolean animate) {
if (mFrontFace) {
if (animate) {
applyAnimation(true);
} else {
mFront.setVisibility(View.GONE);
mBack.setVisibility(View.VISIBLE);
mFrontFace = false;
}
}
}
/**
* Method that applies the animation over the views
*
* @param inverse Applies the inverse animation
*/
void applyAnimation(boolean inverse) {
applyTransformation(getFrontView(), 0, 90 * (inverse ? -1 : 1), true);
}
void applyTransformation(final View v, float start, float end, final boolean step1) {
final float centerX = v.getWidth() / 2.0f;
final float centerY = v.getHeight() / 2.0f;
final Flip3dAnimation anim = new Flip3dAnimation(start, end, centerX, centerY);
anim.setDuration(DURATION);
anim.setFillAfter(true);
anim.setInterpolator(new AccelerateInterpolator());
anim.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
if (!step1) {
getBackView().setVisibility(View.VISIBLE);
}
}
@Override
public void onAnimationRepeat(Animation animation) {
// Ignore
}
@Override
public void onAnimationEnd(Animation animation) {
synchronized (mLock) {
getFrontView().setAnimation(null);
getBackView().setAnimation(null);
if (step1) {
getFrontView().setVisibility(View.INVISIBLE);
applyTransformation(getBackView(),
-90 * (!mFrontFace ? -1 : 1), 0, false);
} else {
mFrontFace = !mFrontFace;
getBackView().setVisibility(View.GONE);
}
}
}
});
v.startAnimation(anim);
}
View getFrontView() {
return mFrontFace ? mFront : mBack;
}
View getBackView() {
return !mFrontFace ? mFront : mBack;
}
}
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