Java tutorial
//package com.java2s; /* * Copyright 2008-2011 the original author or authors. * * 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. */ import java.awt.*; import java.awt.image.BufferedImage; public class Main { /** * Takes a snapshot of the target component. * * @param component the component to draw * @return a Graphics compatible image of the component */ public static Image takeSnapshot(Component component) { return takeSnapshot(component, false); } /** * Takes a snapshot of the target component. * * @param component the component to draw * @param usePrint whether <tt>print()</tt> or <tt>paint()</tt> is used to grab the snapshot * @return a Graphics compatible image of the component */ public static Image takeSnapshot(Component component, boolean usePrint) { BufferedImage image = null; GraphicsEnvironment genv = GraphicsEnvironment.getLocalGraphicsEnvironment(); GraphicsDevice gd = genv.getDefaultScreenDevice(); GraphicsConfiguration gc = gd.getDefaultConfiguration(); if (gc.getColorModel().hasAlpha()) { image = gc.createCompatibleImage((int) component.getSize().getWidth(), (int) component.getSize().getHeight()); } else { image = new BufferedImage((int) component.getSize().getWidth(), (int) component.getSize().getHeight(), BufferedImage.TYPE_INT_ARGB); } Graphics g = image.getGraphics(); if (usePrint) { component.print(g); } else { component.paint(g); } g.dispose(); return image; } }