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/*
* Copyright (C) 2014 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.recents.views;
import android.graphics.Rect;
import com.android.systemui.recents.RecentsConfiguration;
import com.android.systemui.recents.model.TaskStack;
import java.util.ArrayList;
import java.util.List;
/* The layout logic for the RecentsView. */
public class RecentsViewLayoutAlgorithm {
RecentsConfiguration mConfig;
public RecentsViewLayoutAlgorithm(RecentsConfiguration config) {
mConfig = config;
}
/** Return the relative coordinate given coordinates in another size. */
private int getRelativeCoordinate(int availableOffset, int availableSize, int otherCoord, int otherSize) {
float relPos = (float) otherCoord / otherSize;
return availableOffset + (int) (relPos * availableSize);
}
/**
* Computes and returns the bounds that each of the stack views should take up.
*/
List<Rect> computeStackRects(List<TaskStackView> stackViews, Rect availableBounds) {
ArrayList<Rect> bounds = new ArrayList<Rect>(stackViews.size());
int stackViewsCount = stackViews.size();
for (int i = 0; i < stackViewsCount; i++) {
TaskStack stack = stackViews.get(i).getStack();
Rect sb = stack.stackBounds;
Rect db = stack.displayBounds;
Rect ab = availableBounds;
bounds.add(new Rect(getRelativeCoordinate(ab.left, ab.width(), sb.left, db.width()),
getRelativeCoordinate(ab.top, ab.height(), sb.top, db.height()),
getRelativeCoordinate(ab.left, ab.width(), sb.right, db.width()),
getRelativeCoordinate(ab.top, ab.height(), sb.bottom, db.height())));
}
return bounds;
}
}
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