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/*
* Copyright (C) 2011 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.android.systemui.recent;
import android.animation.Animator;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.util.Log;
import android.util.Slog;
import android.view.View;
/* package */ class Choreographer implements Animator.AnimatorListener {
// should group this into a multi-property animation
private static final int OPEN_DURATION = 136;
private static final int CLOSE_DURATION = 250;
private static final String TAG = RecentsPanelView.TAG;
private static final boolean DEBUG = RecentsPanelView.DEBUG;
boolean mVisible;
int mPanelHeight;
View mRootView;
View mScrimView;
View mContentView;
AnimatorSet mContentAnim;
// the panel will start to appear this many px from the end
final int HYPERSPACE_OFFRAMP = 200;
public Choreographer(View root, View scrim, View content) {
mRootView = root;
mScrimView = scrim;
mContentView = content;
}
void createAnimation(boolean appearing) {
float start, end;
if (RecentsPanelView.DEBUG) Log.e(TAG, "createAnimation()", new Exception());
// 0: on-screen
// height: off-screen
float y = mContentView.getTranslationY();
if (appearing) {
// we want to go from near-the-top to the top, unless we're half-open in the right
// general vicinity
start = (y < HYPERSPACE_OFFRAMP) ? y : HYPERSPACE_OFFRAMP;
end = 0;
} else {
start = y;
end = y + HYPERSPACE_OFFRAMP;
}
Animator posAnim = ObjectAnimator.ofFloat(mContentView, "translationY",
start, end);
posAnim.setInterpolator(appearing
? new android.view.animation.DecelerateInterpolator(2.5f)
: new android.view.animation.AccelerateInterpolator(2.5f));
Animator glowAnim = ObjectAnimator.ofFloat(mContentView, "alpha",
mContentView.getAlpha(), appearing ? 1.0f : 0.0f);
glowAnim.setInterpolator(appearing
? new android.view.animation.AccelerateInterpolator(1.0f)
: new android.view.animation.DecelerateInterpolator(1.0f));
Animator bgAnim = ObjectAnimator.ofInt(mScrimView.getBackground(),
"alpha", appearing ? 0 : 255, appearing ? 255 : 0);
mContentAnim = new AnimatorSet();
mContentAnim
.play(bgAnim)
.with(glowAnim)
.with(posAnim);
mContentAnim.setDuration(appearing ? OPEN_DURATION : CLOSE_DURATION);
mContentAnim.addListener(this);
}
void startAnimation(boolean appearing) {
if (DEBUG) Slog.d(TAG, "startAnimation(appearing=" + appearing + ")");
createAnimation(appearing);
mContentView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
mContentAnim.start();
mVisible = appearing;
}
void jumpTo(boolean appearing) {
mContentView.setTranslationY(appearing ? 0 : mPanelHeight);
}
public void setPanelHeight(int h) {
if (DEBUG) Slog.d(TAG, "panelHeight=" + h);
mPanelHeight = h;
}
public void onAnimationCancel(Animator animation) {
if (DEBUG) Slog.d(TAG, "onAnimationCancel");
// force this to zero so we close the window
mVisible = false;
}
public void onAnimationEnd(Animator animation) {
if (DEBUG) Slog.d(TAG, "onAnimationEnd");
if (!mVisible) {
mRootView.setVisibility(View.GONE);
}
mContentView.setLayerType(View.LAYER_TYPE_NONE, null);
mContentAnim = null;
}
public void onAnimationRepeat(Animator animation) {
}
public void onAnimationStart(Animator animation) {
}
}
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