| /* |
| * 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; |
| } |
| } |