/**
* Wire
* Copyright (C) 2016 Wire Swiss GmbH
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.waz.zclient.ui.animation.fragment;
import android.graphics.Matrix;
import android.view.animation.Animation;
import android.view.animation.Transformation;
import com.waz.zclient.ui.animation.interpolators.penner.Expo;
/**
* http://motion.wearezeta.com/options-menu-phone/index.html
*/
public class OptionMenuAnimation extends Animation {
private boolean enter;
private float height;
public OptionMenuAnimation(boolean enter, int duration, int delay, int height) {
this.enter = enter;
this.height = height;
if (enter) {
setInterpolator(new Expo.EaseOut());
} else {
setInterpolator(new Expo.EaseIn());
}
setDuration(duration);
setStartOffset(delay);
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
Matrix m = t.getMatrix();
if (enter) {
float newHeight = (1 - interpolatedTime) * height;
m.postTranslate(0, newHeight);
} else {
float newHeight = interpolatedTime * height;
m.postTranslate(0, newHeight);
}
super.applyTransformation(interpolatedTime, t);
}
}