| /* |
| |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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 org.apache.batik.swing.svg; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.LinkedList; |
| |
| import java.awt.Rectangle; |
| import java.awt.Color; |
| import java.awt.Graphics; |
| |
| import org.apache.batik.swing.gvt.Overlay; |
| |
| /** |
| * One line Class Desc |
| * |
| * Complete Class Desc |
| * |
| * @author <a href="mailto:deweese@apache.org">deweese</a> |
| * @version $Id$ |
| */ |
| public class SVGUpdateOverlay implements Overlay { |
| List rects = new LinkedList(); |
| int size, updateCount; |
| int []counts; |
| public SVGUpdateOverlay(int size, int numUpdates) { |
| this.size = size; |
| counts = new int[numUpdates]; |
| } |
| |
| public void addRect(Rectangle r) { |
| rects.add(r); |
| if (rects.size() > size) |
| rects.remove(0); |
| updateCount++; |
| } |
| |
| public void endUpdate() { |
| int i=0; |
| for (; i<counts.length-1; i++) { |
| counts[i] = counts[i+1]; |
| } |
| counts[i] = updateCount; |
| updateCount = 0; |
| |
| int num = rects.size(); |
| for (i=counts.length-1; i>=0; i--) { |
| if (counts[i] > num) { |
| counts[i] = num; |
| } |
| num -= counts[i]; |
| } |
| counts[0] += num; |
| } |
| |
| public void paint(Graphics g) { |
| Iterator i = rects.iterator(); |
| int count = 0; |
| int idx = 0; |
| int group = 0; |
| while ((group < counts.length-1) && |
| (idx == counts[group])) |
| group++; |
| int cmax = counts.length-1; |
| while (i.hasNext()) { |
| Rectangle r = (Rectangle)i.next(); |
| Color c; |
| c = new Color(1.0f, (cmax-group)/(float)cmax, 0, |
| (count+1.0f)/rects.size()); |
| g.setColor(c); |
| g.drawRect(r.x, r.y, r.width, r.height); |
| count++; idx++; |
| while ((group < counts.length-1) && |
| (idx == counts[group])) { |
| group++; |
| idx = 0; |
| } |
| } |
| } |
| } |