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/*
* Copyright (C) 2018 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.quickstep;
import android.graphics.Rect;
import com.android.launcher3.Utilities;
/**
* Helper class to interpolate the animation between a task view representation and an actual
* window.
*/
public class RecentsAnimationInterpolator {
public static class TaskWindowBounds {
public float taskScale = 1f;
public float taskX = 0f;
public float taskY = 0f;
public float winScale = 1f;
public float winX = 0f;
public float winY = 0f;
public Rect winCrop = new Rect();
@Override
public String toString() {
return "taskScale=" + taskScale + " taskX=" + taskX + " taskY=" + taskY
+ " winScale=" + winScale + " winX=" + winX + " winY=" + winY
+ " winCrop=" + winCrop;
}
}
private TaskWindowBounds mTmpTaskWindowBounds = new TaskWindowBounds();
private Rect mTmpInsets = new Rect();
private Rect mWindow;
private Rect mInsetWindow;
private Rect mInsets;
private Rect mTask;
private Rect mTaskInsets;
private Rect mThumbnail;
private float mInitialTaskScale;
private float mInitialTaskTranslationX;
private float mFinalTaskScale;
private Rect mScaledTask;
private Rect mTargetTask;
private Rect mSrcWindow;
public RecentsAnimationInterpolator(Rect window, Rect insets, Rect task, Rect taskInsets,
float taskScale, float taskTranslationX) {
mWindow = window;
mInsets = insets;
mTask = task;
mTaskInsets = taskInsets;
mInsetWindow = new Rect(window);
Utilities.insetRect(mInsetWindow, insets);
mThumbnail = new Rect(task);
Utilities.insetRect(mThumbnail, taskInsets);
mInitialTaskScale = taskScale;
mInitialTaskTranslationX = taskTranslationX;
mFinalTaskScale = (float) mInsetWindow.width() / mThumbnail.width();
mScaledTask = new Rect(task);
Utilities.scaleRectAboutCenter(mScaledTask, mFinalTaskScale);
Rect finalScaledTaskInsets = new Rect(taskInsets);
Utilities.scaleRect(finalScaledTaskInsets, mFinalTaskScale);
mTargetTask = new Rect(mInsetWindow);
mTargetTask.offsetTo(window.left + insets.left - finalScaledTaskInsets.left,
window.top + insets.top - finalScaledTaskInsets.top);
float initialWinScale = 1f / mFinalTaskScale;
Rect scaledWindow = new Rect(mInsetWindow);
Utilities.scaleRectAboutCenter(scaledWindow, initialWinScale);
Rect scaledInsets = new Rect(insets);
Utilities.scaleRect(scaledInsets, initialWinScale);
mSrcWindow = new Rect(scaledWindow);
mSrcWindow.offsetTo(mThumbnail.left - scaledInsets.left,
mThumbnail.top - scaledInsets.top);
}
public TaskWindowBounds interpolate(float t) {
mTmpTaskWindowBounds.taskScale = Utilities.mapRange(t,
mInitialTaskScale, mFinalTaskScale);
mTmpTaskWindowBounds.taskX = Utilities.mapRange(t,
mInitialTaskTranslationX, mTargetTask.left - mScaledTask.left);
mTmpTaskWindowBounds.taskY = Utilities.mapRange(t,
0, mTargetTask.top - mScaledTask.top);
float taskScale = Utilities.mapRange(t, 1, mFinalTaskScale);
mTmpTaskWindowBounds.winScale = taskScale / mFinalTaskScale;
mTmpTaskWindowBounds.winX = Utilities.mapRange(t,
mSrcWindow.left, 0);
mTmpTaskWindowBounds.winY = Utilities.mapRange(t,
mSrcWindow.top, 0);
mTmpInsets.set(mInsets);
Utilities.scaleRect(mTmpInsets, (1f - t));
mTmpTaskWindowBounds.winCrop.set(mWindow);
Utilities.insetRect(mTmpTaskWindowBounds.winCrop, mTmpInsets);
return mTmpTaskWindowBounds;
}
}
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