java仿Windows画图

package org.crazyit.image; import org.crazyit.image.tool.*; import org.crazyit.image.ImageAction; import static org.crazyit.image.tool.Tool.*; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JMenuBar; import javax.swing.JMenu; import javax.swing.JMenuItem; import javax.swing.JScrollPane; import javax.swing.JToolBar; import javax.swing.JButton; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.ImageIcon; import javax.swing.JColorChooser; import java.awt.Graphics; import java.awt.Dimension; import java.awt.GridLayout; import java.awt.Color; import static java.awt.Color.*; import java.awt.Insets; import java.awt.BorderLayout; import java.awt.FlowLayout; import java.awt.event.MouseMotionListener; import java.awt.event.MouseListener; import java.awt.event.MouseMotionAdapter; import java.awt.event.MouseAdapter; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; import java.awt.event.MouseEvent; import java.awt.image.BufferedImage; /** * 界面对象 * * @author yangenxiong yangenxiong2009@gmail.com * @author Kelvin Mak kelvin.mak125@gmail.com * @version 1.0 * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a> * <br>Copyright (C), 2009-2010, yangenxiong * <br>This program is protected by copyright laws. */ public class ImageFrame extends JFrame { // 定义业务逻辑类 private ImageService service = new ImageService(); // 初始化屏幕的尺寸 private Dimension screenSize = service.getScreenSize(); // 设置默认画板 private JPanel drawSpace = createDrawSpace(); // 设置缓冲图片 private MyImage bufferedImage = new MyImage( (int) screenSize.getWidth() / 2, (int) screenSize.getHeight() / 2, BufferedImage.TYPE_INT_RGB); // 设置当前使用的工具 private Tool tool = null; // 设置画图对象 Graphics g = bufferedImage.getGraphics(); // 颜色显示面板 private JPanel currentColorPanel = null; // 颜色选择器 private JColorChooser colorChooser = getColorChooser(); // 加给菜单的事件监听器 ActionListener menuListener = new ActionListener() { public void actionPerformed(ActionEvent e) { service.menuDo(ImageFrame.this, e.getActionCommand()); } }; // 默认JScrollPane private JScrollPane scroll = null; // 工具栏 JPanel toolPanel = createToolPanel(); // 颜色面板 JPanel colorPanel = createColorPanel(); /** * 默认构造器 * * @return void */ public ImageFrame() { super(); // 初始化 init(); } public ImageService getService() { return this.service; } /** * 初始化ImageFrame * * @return void */ public void init() { // 设置标题 this.setTitle("未命名 - 画图"); // 初始化画图 service.initDrawSpace(this); // 设置标题 // 获取正在使用的工具 tool = ToolFactory.getToolInstance(this, PENCIL_TOOL); // 创建鼠标运动监听器 MouseMotionListener motionListener = new MouseMotionAdapter() { // 拖动鼠标 public void mouseDragged(MouseEvent e) { tool.mouseDragged(e); } // 移动鼠标 public void mouseMoved(MouseEvent e) { tool.mouseMoved(e); } }; // 创建鼠标监听器 MouseListener mouseListener = new MouseAdapter() { // 松开鼠标 public void mouseReleased(MouseEvent e) { tool.mouseReleased(e); } // 按下鼠标 public void mousePressed(MouseEvent e) { tool.mousePressed(e); } // 点击鼠标 public void mouseClicked(MouseEvent e) { tool.mouseClicked(e); } }; drawSpace.addMouseMotionListener(motionListener); drawSpace.addMouseListener(mouseListener); createMenuBar(); // 以drawSpace为viewport去创建一个JScrollPane scroll = new JScrollPane(drawSpace); // 设置viewport ImageService.setViewport(scroll, drawSpace, bufferedImage.getWidth(), bufferedImage.getHeight()); // 将panel加到本Frame上面 this.add(scroll, BorderLayout.CENTER); this.add(toolPanel, BorderLayout.WEST); this.add(colorPanel, BorderLayout.SOUTH); } /** * 获取画布 * * @return JPanel */ public JPanel getDrawSpace() { return this.drawSpace; } /** * 获取JScroolPane * * @return JScrollPane */ public JScrollPane getScroll() { return this.scroll; } /** * 获取工具栏 * * @return JPanel */ public JPanel getToolPanel() { return this.toolPanel; } /** * 获取颜色面板 * * @return JPanel */ public JPanel getColorPanel() { return this.colorPanel; } /** * 获取图片 * * @return MyImage */ public MyImage getBufferedImage() { return this.bufferedImage; } /** * 设置图片 * * @param bufferedImage * MyImage * @return void */ public void setBufferedImage(MyImage bufferedImage) { this.bufferedImage = bufferedImage; } /** * 设置工具 * * @param tool * Tool * @return void */ public void setTool(Tool tool) { this.tool = tool; } /** * 获取工具 * * @return Tool */ public Tool getTool() { return this.tool; } /** * 获取颜色选择器 * * @return JColorChooser */ public JColorChooser getColorChooser() { if (colorChooser == null) { colorChooser = new JColorChooser(); } return colorChooser; } /** * 创建简单颜色选择板 * * @return JPanel */ public JPanel createColorPanel() { // 新建一个JPanel JPanel panel = new JPanel(); // 设置布局方式 panel.setLayout(new FlowLayout(FlowLayout.LEFT)); // 新建一个JToolBar JToolBar toolBar = new JToolBar("颜色"); // 设置为不可拖动 toolBar.setFloatable(false); // 设置与边界的距离 toolBar.setMargin(new Insets(2, 2, 2, 2)); // 设置布局方式 toolBar.setLayout(new GridLayout(2, 6, 2, 2)); // Color类中的已有颜色 Color[] colorArr = { BLACK, BLUE, CYAN, GRAY, GREEN, LIGHT_GRAY, MAGENTA, ORANGE, PINK, RED, WHITE, YELLOW }; JButton[] panelArr = new JButton[colorArr.length]; // 正在使用的颜色 currentColorPanel = new JPanel(); currentColorPanel.setBackground(Color.BLACK); currentColorPanel.setPreferredSize(new Dimension(20, 20)); // 创建这些颜色的button for (int i = 0; i < panelArr.length; i++) { // 创建JButton panelArr[i] = new JButton(new ImageAction(colorArr[i], currentColorPanel)); // 设置button的颜色 panelArr[i].setBackground(colorArr[i]); // 把button加到toobar中 toolBar.add(panelArr[i]); } panel.add(currentColorPanel); panel.add(toolBar); // 返回 return panel; } /** * 获取颜色显示面板 * * @return JPanel */ public JPanel getCurrentColorPanel() { return this.currentColorPanel; } /** * 获取screenSize * * @return Dimension */ public Dimension getScreenSize() { return this.screenSize; } /** * 创建菜单栏 * * @return void */ public void createMenuBar() { // 创建一个JMenuBar放置菜单 JMenuBar menuBar = new JMenuBar(); // 菜单文字数组，与下面的menuItemArr一一对应 String[] menuArr = { "文件(F)", "查看(V)", "颜色(C)", "帮助(H)" }; // 菜单项文字数组 String[][] menuItemArr = { { "新建(N)", "打开(O)", "保存(S)", "-", "退出(X)" }, { "工具箱(T)", "颜料盒(C)" }, { "编辑颜色" }, { "帮助主题", "关于" } }; // 遍历menuArr与menuItemArr去创建菜单 for (int i = 0; i < menuArr.length; i++) { // 新建一个JMenu菜单 JMenu menu = new JMenu(menuArr[i]); for (int j = 0; j < menuItemArr[i].length; j++) { // 如果menuItemArr[i][j]等于"-" if (menuItemArr[i][j].equals("-")) { // 设置菜单分隔 menu.addSeparator(); } else { // 新建一个JMenuItem菜单项 JMenuItem menuItem = new JMenuItem(menuItemArr[i][j]); menuItem.addActionListener(menuListener); // 把菜单项加到JMenu菜单里面 menu.add(menuItem); } } // 把菜单加到JMenuBar上 menuBar.add(menu); } // 设置JMenubar this.setJMenuBar(menuBar); } /** * 创建画板 * * @return JPanel