java 画图程序 图像变形 注释详细

/*本程序设计了一个功能比较简单的画图工具。充分利用了GUI界面编程，特别有别于别的画图程序， * 本程序利用了多线程技术，实现了一个对图像进行扭曲的功能。本程序可以支持文件的导入导出， * 可以对图像进行简单的处理。 * 作者 周欢*/ import java.awt.BasicStroke; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Cursor; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.Point; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.awt.event.MouseMotionListener; import java.awt.image.BufferedImage; import java.awt.image.ImageObserver; import java.awt.image.MemoryImageSource; import java.awt.image.PixelGrabber; import java.io.File; import java.util.Random; import javax.imageio.ImageIO; import javax.swing.Icon; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JColorChooser; import javax.swing.JComboBox; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JSlider; import javax.swing.JToolBar; import javax.swing.JViewport; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; import javax.swing.filechooser.FileNameExtensionFilter; public class Anydraw extends JFrame{//主类 AnyDraw private static final String PENCIL = "PENCIL";//各种工具的定义 private static final String BRUSH = "BRUSH"; private static final String COLORPICKED = "COLORPICKED"; private static final String ATOMIZER = "ATOMIZER"; private static final String ERASER = "ERASER"; private static final String LINE = "LINE"; private static final String POLYGON = "POLYGON"; private static final String RECT = "RECT"; private static final String ROUND = "ROUND"; private static final String ROUNDRECT = "ROUNDRECT"; JPanel panel;//画图界面 JScrollPane scroll;//画图区的滚动条 JMenuBar menuBar;//菜单栏 JMenu mFile,mEdit,mImage;//菜单栏项目 JMenuItem mNew,mOpen,mSave,mQuit,mEditColor,mImgChange;//菜单子项目 JLabel stateBar; //状态栏 JToolBar toolBardown,toolBarup; //工具栏 ：toolBardown用来承载状态栏 Image img;//显示的图像 JViewport viewport = new JViewport();//定义viewport String fileName,tagetName;//读取图像和存储图像时的路径 BufferedImage bufferimage,tempbuffer;//图像缓存 Graphics2D g;//获取画图环境 int w,h,R=0,G=0,B=0;//图像大小 及现选颜色的三色 float lineWidth = 2.0f;//画笔粗细 Point startp,endp,tempp;//鼠标位置记录 Color currentColor=new Color(R,G,B);//现选颜色 JButton toolbutton[],fillButton;//工具栏选项按钮 int currentTool;//现选工具 JPanel borderPanel=new JPanel();//承载边数显示工具的JPanel JPanel colorLabel=new JPanel();//当前颜色标签 JPanel colorPanel=new JPanel();//承载颜色选择工具的JPanel JToolBar colorBack=new JToolBar();//承载颜色选择工具的工具条 JLabel colorR=new JLabel("R");//三个颜色标签 JLabel colorG=new JLabel("G"); JLabel colorB=new JLabel("B"); JLabel showcolorR=new JLabel("0");//三个颜色数值标签 JLabel showcolorG=new JLabel("0"); JLabel showcolorB=new JLabel("0"); JSlider sliderR=new JSlider(JSlider.HORIZONTAL,0,255,0);//三个颜色选择条 JSlider sliderG=new JSlider(JSlider.HORIZONTAL,0,255,0); JSlider sliderB=new JSlider(JSlider.HORIZONTAL,0,255,0); JComboBox setPenWidth=new JComboBox();//设置画笔粗细的选择框 JComboBox setBorderCount=new JComboBox();//设置多边形边数的选择框 int border=3;//多边形边数 初始为3 Cursor cu ;//鼠标样式 int[] temp;//图像缓存数组 int[] deal;//处理后图像数组 int r,x1,y1;//变换区域半径r，目标坐标点的源点坐标（x1,y1） double d,c=0.1,e=1000,dp,drag,dragstep;//目标点离圆心距离d，凹陷变换系数c，扭曲变换系数e，扭曲参数drag //源始点离圆心距离dp，扭曲变换系数增量dragstep boolean changed,fill;//记录文档是否修改过 记录是否需要对图像进行填充 Thread imgchange=new Thread(new ImgChange());//进行图像变换的线程 public Anydraw(){//初始化界面 super("Anydraw by zhouhuan"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); w=600;//初始画布大小 h=400; panel=creatDraw();//创建画布 ///////////创建菜单栏///////////////////// menuBar=new JMenuBar(); setJMenuBar(menuBar); mFile=new JMenu("文件"); mEdit=new JMenu("编辑"); mImage=new JMenu("图像"); mNew=new JMenuItem("新建"); mOpen=new JMenuItem("打开"); mSave=new JMenuItem("保存"); mQuit=new JMenuItem("退出"); mEditColor=new JMenuItem("编辑色彩"); mImgChange=new JMenuItem("图像变形"); menuBar.add(mFile); menuBar.add(mEdit); menuBar.add(mImage); mFile.add(mNew); mFile.add(mOpen); mFile.add(mSave); mFile.add(mQuit); mEdit.add(mEditColor); mImage.add(mImgChange); ///////////创建状态栏///////////////////// stateBar=new JLabel("here"); toolBardown=new JToolBar(); toolBardown.add(stateBar); toolBardown.setFloatable(false); //////////设置事件监听器///////////////////// MenuListener mListen=new MenuListener(); mNew.addActionListener(mListen); mOpen.addActionListener(mListen); mSave.addActionListener(mListen); mQuit.addActionListener(mListen); mEditColor.addActionListener(mListen); mImgChange.addActionListener(mListen); MouseAction mouseListen=new MouseAction(); panel.addMouseListener(mouseListen); panel.addMouseMotionListener(mouseListen); //////////创建工具栏///////////////////// /******工具初始化********/ JPanel toolPanel=new JPanel(); currentTool=0; //设定初始选定画笔工具 toolBarup=new JToolBar(); toolBarup.setOrientation( toolBarup.HORIZONTAL );//横向工具条 toolBarup.setFloatable( false ); toolBarup.setLayout(new FlowLayout( FlowLayout.LEFT) );//设置工具栏的布局 toolPanel.setLayout( new FlowLayout( FlowLayout.LEFT) ); toolPanel.setPreferredSize(new Dimension(200,85)); toolPanel.setOpaque(false);//对下透明 String[] tool = { PENCIL, BRUSH, COLORPICKED//初始化工具 , ATOMIZER, ERASER, LINE, POLYGON , RECT, ROUND, ROUNDRECT}; toolbutton=new JButton[tool.length] ; for( int i = 0 ; i < tool.length ; i++ ) {//增添工具 String way="img/"+tool[i]+".jpg"; Icon icon=new ImageIcon(way); toolbutton[i]= new JButton(icon); toolbutton[i].setPreferredSize(new Dimension(30, 20)); toolbutton[i].addActionListener(mListen);//增添工具监听器 toolPanel.add(toolbutton[i]); } toolbutton[0].setBackground(new Color(239,196,88)); //初始画笔工具按钮背景 /******画笔粗细初始化********/ JLabel penWidth=new JLabel("画笔粗细"); //画笔粗细设置 toolPanel.add(penWidth);toolPanel.add(setPenWidth); for (int j=1;j<11;j++)//初始画笔粗细选择框 setPenWidth.addItem(j+""); setPenWidth.setSelectedIndex(1); setPenWidth.addItemListener(new ItemListener(){//设置选择框监听器 public void itemStateChanged(ItemEvent arg0) { if(arg0.getStateChange()==ItemEvent.SELECTED) { lineWidth=1+setPenWidth.getSelectedIndex(); g.setStroke(new BasicStroke(lineWidth));//更新画笔粗细 } } }); /******填充按钮初始化********/ fillButton=new JButton("填充");//是否填充按钮初始化 fillButton.addActionListener(mListen);//增加事件监听器 toolPanel.add(fillButton); toolBarup.add(toolPanel); /******多边形边数初始化********/ JLabel borderCount=new JLabel("多边形边数"); borderPanel.setPreferredSize(new Dimension(80,85)); borderPanel.setLayout( new FlowLayout( FlowLayout.LEFT) ); borderPanel.add(borderCount); for (int j=3;j<11;j++)//初始多边形边数选择框 setBorderCount.addItem(j+""); setBorderCount.setSelectedIndex(0); setBorderCount.addItemList