java实现简单地绘图软件

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1、实用标准文案项目效果图：项目源代码：importjava.awt.*;importjava.awt.event.*;importjava.awt.geom.Ellipse2D;importjava.awt.geom.Line2D;importjava.awt.geom.Rectangle2D;importjava.awt.image.BufferedImage;importjava.io.File;importjava.io.IOException;importjavax.imageio.ImageIO;impo

2、rtjavax.swing.*;importjavax.swing.filechooser.FileNameExtensionFilter;/*author:蒋冰*/publicclassImageDraw{privateinttypeFlag=1;privateintendFlag=1;privateintstrokeTemp=1;privateColorcolor=Color.black;精彩文档实用标准文案privateBasicStrokestroke=newBasicStroke();privatefl

3、oatpre_x=0;privatefloatpre_y=0;privatefloatstart_x=0;privatefloatstart_y=0;privatefloatstart_X=0;privatefloatstart_Y=0;privatefloatend_x=0;privatefloatend_y=0;privatefloatwidth=0;privatefloatheight=0;privatefinalintAREA_WIDTH=700;privatefinalintAREA_HEIGHT=40

4、0;privateLine2D.Floatline;privateRectangle2D.Floatrect;privateEllipse2D.Floatellipse;privateFileimageFile;BufferedImageimage=newBufferedImage(AREA_WIDTH,AREA_HEIGHT,BufferedImage.TYPE_INT_RGB);Graphics2Dg2=(Graphics2D)image.getGraphics();privateJFrameframe=ne

5、wJFrame("简单手绘程序");privateDrawPaneldrawArea=newDrawPanel();JButtonbuttonShowColor=newJButton("");publicvoidinit(){g2.fillRect(0,0,AREA_WIDTH,AREA_HEIGHT);g2.setColor(Color.black);drawArea.setPreferredSize(newDimension(AREA_WIDTH,AREA_HEIGHT));drawArea.addMouse

6、MotionListener(newMouseMotionAdapter(){publicvoidmouseDragged(MouseEvente){do_mouseDragged(e);}});drawArea.addMouseListener(newMouseAdapter(){publicvoidmousePressed(MouseEvente1){do_mousePressed(e1);精彩文档实用标准文案}publicvoidmouseReleased(MouseEvente){g2.setColor(

7、color);g2.setStroke(stroke);endFlag=typeFlag;drawArea.repaint();}publicvoidmouseEntered(MouseEvente){frame.setCursor(newCursor(Cursor.CROSSHAIR_CURSOR));}publicvoidmouseExited(MouseEvente){frame.setCursor(null);}});frame.add(drawArea);JMenuBarmb=newJMenuBar()

8、;JMenumenuFile=newJMenu("文件");JMenuItemmenuItemSave=newJMenuItem("保存");menuItemSave.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEventarg0){do_save_actionPerforme