mirror of https://github.com/apache/cloudstack.git
91 lines
2.8 KiB
Java
91 lines
2.8 KiB
Java
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package com.cloud.consoleproxy.util;
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import java.awt.Rectangle;
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import java.util.ArrayList;
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import java.util.List;
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public class Region {
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private Rectangle bound;
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private List<Rectangle> rectList;
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public Region() {
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bound = new Rectangle(0, 0, 0, 0);
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rectList = new ArrayList<Rectangle>();
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}
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public Region(Rectangle rect) {
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bound = new Rectangle(rect.x, rect.y, rect.width, rect.height);
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rectList = new ArrayList<Rectangle>();
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rectList.add(rect);
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}
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public Rectangle getBound() {
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return bound;
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}
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public void clearBound() {
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assert(rectList.size() == 0);
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bound.x = bound.y = bound.width = bound.height = 0;
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}
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public List<Rectangle> getRectangles() {
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return rectList;
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}
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public boolean add(Rectangle rect) {
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if(bound.isEmpty()) {
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assert(rectList.size() == 0);
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bound.x = rect.x;
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bound.y = rect.y;
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bound.width = rect.width;
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bound.height = rect.height;
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rectList.add(rect);
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return true;
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}
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Rectangle rcInflated = new Rectangle(rect.x - 1, rect.y- 1, rect.width + 2, rect.height + 2);
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if(!bound.intersects(rcInflated))
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return false;
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for(Rectangle r : rectList) {
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if(r.intersects(rcInflated)) {
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if(!r.contains(rect)) {
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enlargeBound(rect);
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rectList.add(rect);
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return true;
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}
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}
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}
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return false;
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}
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private void enlargeBound(Rectangle rect) {
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int boundLeft = Math.min(bound.x, rect.x);
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int boundTop = Math.min(bound.y, rect.y);
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int boundRight = Math.max(bound.x + bound.width, rect.x + rect.width);
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int boundBottom = Math.max(bound.y + bound.height, rect.y + rect.height);
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bound.x = boundLeft;
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bound.y = boundTop;
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bound.width = boundRight - boundLeft;
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bound.height = boundBottom - boundTop;
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}
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}
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