java做的移动拼图游戏

package program; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Container; import java.awt.Cursor; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.awt.event.MouseMotionListener; import java.awt.event.MouseWheelEvent; import java.awt.event.MouseWheelListener; import java.awt.geom.AffineTransform; import java.awt.image.AffineTransformOp; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; import javax.swing.JButton; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JPanel; /** * 裁减合适的图片作为游戏使用的图片 * 图片初始必须大于等于裁减区域 * 可以移动图片选择合适的区域以及调整图片的大小 * 图片最大不能超过它本身的150% * 最小不能超过裁减区域的大小 */ @SuppressWarnings("serial") public class ChoicePicture extends JPanel implements MouseMotionListener, MouseListener, MouseWheelListener { public static final int WIDTH = 700;// 窗口宽度 public static final int HEIGHT = 700;// 窗口高度 public static final int BORDER = 50;// 透明边框大小 public static final int COMPASSION_SIZE = 10;// 图片每次伸缩的大小 public static File directory;//保存添加图片时的目录 // 保存图片原来的大小 private int sourceImgWidth; private int sourceImgHeight; private int imgMaxSize;// 图片的最大大小 private BufferedImage img;// 被裁减的图片 private int imgWidth;// 图片的宽度 private int imgHeight;// 图片的高度 private int picStartX;// 图片的左上角坐标 private int picStartY; private int picEndX;// 图片的右下角坐标 private int picEndY; // 鼠标按下时的坐标 private int pressedX; private int pressedY; // 记录图片停止移动后的左下角坐标 private int stopMoveX; private int stopMoveY; private boolean inTrimArea;// 鼠标是否在裁减区域 private boolean isPressed;// 鼠标是否被按下了 private MPGStatePanel statePanel; private JFrame f; private JButton define; private JButton reselect; private JButton cancel; public ChoicePicture(BufferedImage img,MPGStatePanel statePanel) { this.statePanel = statePanel; this.img = img; init();// 初始化域 this.addMouseListener(this); this.addMouseMotionListener(this); this.addMouseWheelListener(this); f = new JFrame("添加图片"); Container cp = f.getContentPane(); JPanel p = new JPanel(); p.setPreferredSize(new Dimension(WIDTH - 9, HEIGHT - 9)); p.setLayout(new BorderLayout()); JPanel buttonPanel = new JPanel(); define = new JButton("确定"); define.addActionListener(new ActionListener() { /** * 从本地磁盘添加一张图片 */ @Override public void actionPerformed(ActionEvent e) { //计算图片的缩放比例 double scaleX = (double)ChoicePicture.this.imgWidth / (double)ChoicePicture.this.img.getWidth(); double scaleY = (double)ChoicePicture.this.imgHeight / (double)ChoicePicture.this.img.getHeight(); //缩放图片 AffineTransform at = new AffineTransform(); at.scale(scaleX, scaleY); AffineTransformOp ato = new AffineTransformOp(at,AffineTransformOp.TYPE_BILINEAR); BufferedImage image = ato.filter(ChoicePicture.this.img, null); //计算裁减图片的大小 int border = ChoicePicture.BORDER; int x = ChoicePicture.this.picStartX; int y = ChoicePicture.this.picStartY; int w = ChoicePicture.WIDTH; int h = ChoicePicture.HEIGHT; image = image.getSubimage(border - x, border - y, w - border * 2, h - border * 2); //返回图片 ChoicePicture.this.statePanel.setThumbail(image); ChoicePicture.this.f.dispose(); } }); reselect = new JButton("重新选择"); reselect.addActionListener(new ActionListener() { /** * 重新在本地磁盘选择图片 */ @Override public void actionPerformed(ActionEvent e) { ChoicePicture.this.img = ChoicePicture.addPicture(f,directory); if (ChoicePicture.this.img != null) { ChoicePicture.this.init();//初始化数据，图片的坐标和大小 ChoicePicture.this.repaint(); } } }); cancel = new JButton("取消"); cancel.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { ChoicePicture.this.f.dispose(); } }); buttonPanel.add(define); buttonPanel.add(reselect); buttonPanel.add(cancel); p.add(this); cp.add(buttonPanel, BorderLayout.SOUTH); cp.add(p, BorderLayout.CENTER); f.pack(); Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); f.setLocation((screenSize.width - WIDTH) / 2, 0); f.setResizable(false); f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); f.setVisible(true); } public void init() { //保存图片的原始大小 this.sourceImgWidth = img.getWidth(); this.sourceImgHeight = img.getHeight(); this.imgMaxSize = (int) (img.getWidth() * 1.5); // 图片大小 this.imgWidth = img.getWidth(); this.imgHeight = img.getHeight(); // 图片左上角坐标 this.picStartX = BORDER; this.picStartY = BORDER; // 图片右下角坐标 this.picEndX = picStartX + img.getWidth(); this.picEndY = picStartY + img.getHeight(); // 图片停止移动左上角坐标 this.stopMoveX = BORDER; this.stopMoveY = BORDER; this.inTrimArea = false; this.isPressed = false; } /** * 弹出添加图片对话框 * @param 相对显示的窗体 * @return */ public static BufferedImage addPicture(Container c,File dir) { JFileChooser chooser = new JFileChooser(); chooser.addChoosableFileFilter(new PictureFilter());//可以选择的文件类型 chooser.setCurrentDirectory(dir);//设置目录 chooser.setMultiSelectionEnabled(false);//不允许多选 chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);//只允许选择文件 chooser.setDialogTitle("请选择一张图片"); chooser.setAcceptAllFileFilterUsed(false);//全部文件选项取消 if(chooser.showOpenDialog(c) == JFileChooser.APPROVE_OPTION) { try { BufferedImage img = ImageIO.read(new File(chooser.getSelectedFile().getPath())); ChoicePicture.directory = chooser.getCurrentDirectory(); if (ChoicePicture.pictureSize(img))//判断是否符合大小 { return img; } else { JOptionPane.showMessageDialog(null, "图片大小必须大于 600 * 600像素!"); } } catch (IOException e1) { JOptionPane.showMessageDialog(null, "找不到该图片!"); e1.printStackTrace(); } } return null; } /** * 图片的大小是否符号要求 * * @param img * @return */ public static boolean pictureSize(BufferedImage img) { boolean w = img.getWidth() >= WIDTH - BORDER * 2 ? true : false; boolean h = img.getHeight() >= HEIGHT - BORDER * 2 ? true : false; return w & h; } /** * 绘制图片的位置，根据左上角坐标和右下角坐标确定该图片的位置和大小 */ public void paint(Graphics g) { super.paint(g); picEndX = picStartX + imgWidth; picEndY = picStartY + imgHeight; g.drawImage(img, picStartX, picStartY, picEndX, picEndY, 0, 0, img.getWidth(), img.getHeight(), null); // 裁减区域方框 g.setColor(new Color(128, 128, 128)); g.drawRect(BORDER, BORDER, WIDTH - BORDER * 2, HEIGHT - BORDER * 2); g.drawRect(0, 0, WIDTH, HEIGHT); // 透明边缘 g.setColor(new Color(255, 255, 255, 100)); g.fillRect(0, 0, WIDTH, BORDER);// 顶边框 g.fillRect(0, HEIGHT - BORDER, WIDTH, BORDER);// 底边框 g.fillRect(0, BORDER, BORDER, HEIGHT - BORDER * 2);// 左边框 g.fillRect(WIDTH - BORDER, BORDER, BORDER, HEIGHT - BORDER * 2);// 右边框 } /** * 缩小图片 */ public void scale() { // 图片缩小后不小于裁减区域 if (imgWidth > WIDTH - BORDER * 2 && imgHeight > HEIGHT - BORDER * 2) { boolean startX = picStartX + COMPASSION_SIZE > BORDE