仿XP画图板.rar

package paint_1; import java.awt.AWTException; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Cursor; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.MouseInfo; import java.awt.Point; import java.awt.Rectangle; import java.awt.Robot; import java.awt.Stroke; import java.awt.TextArea; import java.awt.TextComponent; import java.awt.TextField; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.FocusEvent; import java.awt.event.FocusListener; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.TextEvent; import java.awt.event.TextListener; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.sql.Time; import java.util.Random; import java.util.Scanner; import javax.imageio.ImageIO; import javax.swing.ImageIcon; import javax.swing.JFileChooser; import javax.swing.JTextArea; import javax.swing.event.AncestorListener; /** * PaintPanel 画图区的鼠标监听类：按下，拖曳，释放时取得坐标，画直线等 * 需得到：PaintPanel 的画布（gra,color）；tool_panel 的工具命令（tool_command）；保存坐标的队列（list） * 仅传出参数给PaintPanel */ public class MyMouseAdapter extends MouseAdapter{ private String tool_command; private String n; private Color color; private int X1,X2,Y1,Y2; private Graphics2D g; private ToolPanel tool_panel; private ColorPanel color_panel; private PaintPanel paint_panel; private MyList myList_1=new MyList(); private MyList myList_2=new MyList(); private Cursor cursor; //显示光标 private Robot robot; private Point mousepoint;//相对于屏幕的坐标 private boolean airbrush_value=false; //画多边形使用的数据 private int count; private int first_x,first_y,next_x,next_y; //画文本框使用的数据 private JTextArea textArea; private String text; private int text_x,text_y; private MyList textList=new MyList(); private boolean textArea_show=false; /** * 自定义构造函数，将传递进来的三个面板接收 * @param toolPanel,colorPanel,paintPanel */ public MyMouseAdapter(ToolPanel toolPanel,ColorPanel colorPanel,PaintPanel paintPanel){ tool_panel=toolPanel; color_panel=colorPanel; paint_panel=paintPanel; try { robot=new Robot(); } catch (AWTException e2) { e2.printStackTrace(); } } /** * 鼠标按下 */ public void mousePressed(MouseEvent e){ X1 = e.getX(); Y1 = e.getY(); //类 MouseInfo仅两个方法：2.返回表示鼠标指针当前位置的 PointerInfo 实例 mousepoint = MouseInfo.getPointerInfo().getLocation(); color=color_panel.getColorButton().getBackground(); g=(Graphics2D) paint_panel.getGraphics(); g.setColor(color); //按下鼠标后,画出随机喷墨，保存随机数 if("airbrush".equals(tool_command)){ //画10个点，在距离鼠标10个单位内 for(int i=0;i<10;i++){ int x,y; x=X1+new Random().nextInt(10); y=Y1+new Random().nextInt(10); paint_panel.setList(myList_2.saveValue(x, y, 1, 1,tool_command,color),2); g.fillRect(x, y, 1, 1); } }; //取色笔命令 if("color_picker".equals(tool_command)&&n!=null){ color = robot.getPixelColor(mousepoint.x, mousepoint.y); color_panel.getColorButton().setBackground(color); //设置按钮的颜色为取色笔所取颜色 g.setColor(color); tool_command=n; //用完取色笔命令之后还原command,初始值保证n不为空 }else { n=tool_command; //使用取色笔命令之前保存command }; //取色之后，改变光标，显示原来选择的画图工具 this.setCursor(); } /** * 鼠标释放 */ public void mouseReleased(MouseEvent e) { X2=e.getX(); Y2=e.getY(); if(!"polygon".equals(tool_command)){ /* * 接收调用“保存值方法”后返回的Object类的队列,设置list给 paint_panel */ paint_panel.setList(myList_1.saveValue(X1, Y1, X2, Y2,tool_command,color),1); }; if("dot_rect".equals(tool_command)){ //得到鼠标释放点的坐标，创建一个相对屏幕的矩形 Rectangle rectangle=new Rectangle(mousepoint.x, mousepoint.y, Math.abs(X1-X2), Math.abs(Y1-Y2)); new ImageCut(rectangle).cutImage();//创建截图对象，调用截图方法 // // g.setColor(Color.white); // g.clearRect(Math.min(X1,X2),Math.min(Y1, Y2) , Math.abs(X1-X2), Math.abs(Y1-Y2)); // g.setColor(c); }else if("line".equals(tool_command)){ g.drawLine(X1, Y1, X2, Y2); }else if("rect".equals(tool_command)){ g.drawRect(Math.min(X1,X2),Math.min(Y1, Y2) , Math.abs(X1-X2), Math.abs(Y1-Y2)); }else if("oval".equals(tool_command)){ g.drawOval(Math.min(X1,X2),Math.min(Y1, Y2) , Math.abs(X1-X2), Math.abs(Y1-Y2)); }else if("round_rect".equals(tool_command)){ g.drawRoundRect(Math.min(X1,X2),Math.min(Y1, Y2) , Math.abs(X1-X2), Math.abs(Y1-Y2), (Math.abs(X1-X2))/3, (Math.abs(Y1-Y2))/3); }else if("word".equals(tool_command)&&(textArea_show==false)&&(Math.abs(X1-X2)>20&& Math.abs(Y1-Y2)>20)){ //创建文本框,宽必须大于20，防止画出空框使得textArea_show==true。第二次单击画板后，text空，报错 textArea= new JTextArea(); textArea.setBounds(X1, Y1, Math.abs(X1-X2), Math.abs(Y1-Y2)); textArea.setLineWrap(true);//自动换行 paint_panel.add(textArea); textArea.setBackground(Color.lightGray); /** * 文本框添加键盘监听，每按下一个键，保存一次文本,窗口重绘一次 * 此监听方法不妥，总是要重绘。应该在输入完毕后再进行重绘 */ KeyListener text_keyListener=new KeyAdapter(){ public void keyReleased(KeyEvent e){ text=textArea.getText(); System.out.println(text); } }; textArea.addKeyListener(text_keyListener); //保存画字符串的位置 text_x=X1; text_y=Y1+13; textArea_show=true;//改变文本框的显示状态 }else if("polygon".equals(tool_command)){ count++; if(count==1){ first_x=X1; first_y=Y1; g.drawLine(X1,Y1,X2,Y2); paint_panel.setList(myList_1.saveValue(X1, Y1, X2, Y2,tool_command,color),1); }else{ g.drawLine(next_x,next_y,X2,Y2); //第二点的坐标为释放的坐标 paint_panel.setList(myList_1.saveValue(next_x,next_y, X2, Y2,tool_command,color),1); //如果画图结束，则count清零 if(Math.abs(X2-first_x)<3&&Math.abs(Y2-first_y)<3){ count=0; } }; next_x=X2; next_y=Y2; } } /** * 鼠标拖曳:喷枪，刷子，铅笔，橡皮擦 */ public void mouseDragged(MouseEvent e) { X2=e.getX(); Y2=e.getY(); //如果是喷枪，则保存随机数，否则保存坐标原值 if("airbrush".equals(tool_command)){ for(int i=0;i<10;i++){ int x,y; x=X2+new Random().nextInt(10); y=Y2+new Random().nextInt(10); //在重绘面板中保存喷枪画出的随机数坐标 paint_panel.setList(myList_2.saveValue(x, y, 1, 1,tool_command,color),2); g.fillRect(x,y, 1, 1); } }else if("pencil".equals(tool_command)||"eraser".equals(tool_command)||"brush".equals(tool_command)){ /* * 接收调用“保存值方法”后返回的Object类的队列,设置list给 paint_panel */ paint_panel.setList(myList_2.saveValue(X1, Y1, X2, Y2,tool_command,color),2); } /** * 铅笔画直线 ：(X1, Y1)为当前的坐标； （ X2, Y2）为下一点的坐标 * 橡皮擦 */ if("pencil".equals(tool_command)){ g.drawLine(X1, Y1, X2, Y2); X1=X2; Y1=Y2; }else if("eraser".equals(tool_command)||"brush".equals(tool_command)){ if("eraser".equals(tool_command)){ g.setColor(Color.white);} for(int x=X2;x<X2+8;x++){ for(int y=Y2;y<Y2+8;y++){ g.drawLine(x, y,X2, Y2); } } }else if("rect".equals(tool_command)){ g.drawRect(X1, Y1, Math.abs(X1-X2), Math.abs(Y1-Y2)); } } /** * 鼠标点击，文本框内的字符串显示 */ public void mouseClicked(MouseEvent e) { //必须要有此判断，否则每单击一次就会显示一次，形成复制字符串的效果 if