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/*
* Copyright (C) 2016 Cyanogen, Inc.
* Copyright (C) 2016 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.theme.perapptheming;
import android.animation.Animator;
import android.animation.ValueAnimator;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Canvas;
import android.graphics.Path;
import android.graphics.PointF;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.view.animation.Animation;
import android.widget.FrameLayout;
import org.cyanogenmod.theme.chooser.R;
public class PerAppThemeListLayout extends FrameLayout {
private PerAppThemingWindow mWindow;
private PointF mCenter;
private float mMaxRadius;
private float mTargetRadius;
private float mStartRadius;
private float mCurrentRadius;
private ValueAnimator mAnimator;
private boolean mIsAnimating;
private Path mRevealPath;
public PerAppThemeListLayout(Context context) {
this(context, null);
}
public PerAppThemeListLayout(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public PerAppThemeListLayout(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
final Resources res = getResources();
float width = res.getDimension(R.dimen.theme_list_width);
float height = res.getDimension(R.dimen.theme_list_max_height);
mMaxRadius = (float) Math.sqrt(Math.pow(width, 2) + Math.pow(height, 2));
mRevealPath = new Path();
mAnimator = new ValueAnimator();
mAnimator.setInterpolator(new AccelerateDecelerateInterpolator());
mAnimator.addListener(mAnimationListener);
mAnimator.addUpdateListener(mUpdateListener);
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN &&
event.getKeyCode() == KeyEvent.KEYCODE_BACK && mWindow != null) {
mWindow.hideThemeList();
}
return super.dispatchKeyEvent(event);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (isEnabled() && event.getAction() == MotionEvent.ACTION_DOWN && mWindow != null) {
mWindow.hideThemeList();
return true;
}
return super.onTouchEvent(event);
}
@Override
protected void dispatchDraw(Canvas canvas) {
if (!mIsAnimating) {
super.dispatchDraw(canvas);
} else {
final int state = canvas.save();
mRevealPath.reset();
mRevealPath.addCircle(mCenter.x, mCenter.y, mCurrentRadius, Path.Direction.CW);
canvas.clipPath(mRevealPath);
super.dispatchDraw(canvas);
canvas.restoreToCount(state);
}
}
public void setPerAppThemingWindow(PerAppThemingWindow window) {
mWindow = window;
}
/**
* Perform a circular reveal from center cx,cy
* @param cx X position of center
* @param cy Y position of center
* @param duration Duration of animation
*/
public void circularReveal(float cx, float cy, long duration) {
mCenter = new PointF(cx, cy);
mIsAnimating = true;
mStartRadius = mCurrentRadius;
mTargetRadius = mMaxRadius;
startAnimation(duration);
}
/**
* Perform a circular hide from center cx,cy
* @param cx X position of center
* @param cy Y position of center
* @param duration Duration of animation
*/
public void circularHide(float cx, float cy, long duration) {
mCenter = new PointF(cx, cy);
mIsAnimating = true;
mStartRadius = mCurrentRadius;
mTargetRadius = 0f;
startAnimation(duration);
}
private void startAnimation(long duration) {
getChildAt(0).setVisibility(View.VISIBLE);
mAnimator.setFloatValues(mStartRadius, mTargetRadius);
mAnimator.setDuration(duration);
mAnimator.start();
}
private ValueAnimator.AnimatorUpdateListener mUpdateListener =
new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
Float value = (Float) animation.getAnimatedValue();
mCurrentRadius = value.floatValue();
invalidate();
}
};
private Animator.AnimatorListener mAnimationListener = new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {}
@Override
public void onAnimationEnd(Animator animation) {
mIsAnimating = false;
if (mCurrentRadius <= 0) {
getChildAt(0).setVisibility(INVISIBLE);
}
}
@Override
public void onAnimationCancel(Animator animation) {}
@Override
public void onAnimationRepeat(Animator animation) {}
};
}
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