JAVA实验报告简单绘图程序Word格式.docx
《JAVA实验报告简单绘图程序Word格式.docx》由会员分享，可在线阅读，更多相关《JAVA实验报告简单绘图程序Word格式.docx（16页珍藏版）》请在冰点文库上搜索。
JToolBartool=newWinToolBar（（windowsPaint）paintWin）;
tool.setBounds（0,0,1000,30）;
tool.setVisible（true）;
JFrameframe=newJFrame（）;
frame.setLayout（null）;
frame.setVisible（true）;
frame.setBounds（0,0,1000,1000）;
frame.add（tool）;
frame.add（paintWin）;
}
}
test.java
importjava.awt.GradientPaint;
importjava.lang.reflect.Constructor;
importbase.GrapicsElem;
importbase.Rect;
publicclasstestfractor{
/**
*@throwsClassNotFoundException
publicstaticvoidmain（String[]args）throwsClassNotFoundException{
GrapicsElemGe=newRect（）;
System.out.println（Ge.getClass（）.getName（））;
Class<
?
>
demo1=null;
Class<
demo2=null;
Class<
demo3=null;
try{
//一般尽量采用这种形式
demo1=Class.forName（"
base.Rect"
con=demo1.getSuperclass（）;
System.out.println（con.getName（））;
demo2=Class.forName（"
base.GrapicsElem"
suns[]=demo2.getInterfaces（）;
for（inti=0;
i<
suns.length;
i++）{
System.out.println（suns[i].getName（））;
}
System.out.println（con.length）;
//GrapicsElemgg=（GrapicsElem）con[0].newInstance（）;
System.out.println（con[0]）;
System.out.println（con[1]）;
System.out.println（con[2]）;
}catch（Exceptione）{
e.printStackTrace（）;
}
demo2=newRect（）.getClass（）;
demo3=Rect.class;
System.out.println（"
类名称"
+demo1.getName（））;
+demo2.getName（））;
+demo3.getName（））;
GrapicsElem.java
packagebase;
importjava.awt.Color;
importjava.awt.Graphics;
importjava.awt.Point;
publicabstractclassGrapicsElem{
Pointstart;
Pointend;
privateColorcolor;
publicColorgetColor（）{
returncolor;
publicvoidsetColor（Colorcolor）{
this.color=color;
publicvoidsetStart（Pointstart）{
this.start=start;
publicvoidsetEnd（Pointend）{
this.end=end;
publicabstractvoiddoMousePress（Pointp）;
publicabstractvoiddoMouseDrag（Pointp）;
publicabstractvoiddoMouseRelease（Pointp）;
publicabstractvoiddraw（Graphicsg）;
Line.java
importjava.util.ArrayList;
publicclassLineextendsGrapicsElem{
ArrayList<
Point>
track;
publicLine（）{
track=newArrayList<
（）;
@Override
publicvoiddraw（Graphicsg）{
track.size（）-1;
Pointcur=track.get（i）;
Pointnext=track.get（i+1）;
g.drawLine（cur.x,cur.y,next.x,next.y）;
privatevoidAddPoint（Pointp）{
track.add（p）;
publicvoiddoMousePress（Pointp）{
AddPoint（p）;
publicvoiddoMouseDrag（Pointp）{
publicvoiddoMouseRelease（Pointp）{
Rect.java
publicclassRectextendsGrapicsElem{
intx,y,width,height;
g.drawRect（getX（）,getY（）,getWidth（）,getHeight（））;
super.setStart（p）;
super.setEnd（p）;
publicintgetX（）{
returnMath.min（start.x,end.x）;
publicintgetY（）{
returnMath.min（start.y,end.y）;
publicintgetWidth（）{
returnMath.abs（start.x-end.x）;
publicintgetHeight（）{
returnMath.abs（start.y-end.y）;
Circle.java
publicclassCircleextendsRect{
g.drawOval（getX（）,getY（）,getWidth（）,getHeight（））;
windowsPaint.java
packagewinpaint;
importjava.awt.BasicStroke;
importjava.awt.Button;
importjava.awt.Font;
importjava.awt.Graphics2D;
importjava.awt.Image;
importjava.awt.event.ActionEvent;
importjava.awt.event.MouseEvent;
importjava.awt.event.MouseListener;
importjava.awt.event.MouseMotionListener;
importjava.io.File;
importjava.io.IOException;
importjava.nio.Buffer;
importjava.util.BitSet;
importjava.util.List;
importjava.awt.geom.*;
importjava.awt.image.BufferedImage;
importjavax.imageio.ImageIO;
importjavax.swing.ImageIcon;
importjavax.swing.JLabel;
importbase.Circle;
importbase.Line;
publicclasswindowsPaintextendsJPanel
implementsMouseListener,MouseMotionListener
{
Stringcommand="
矩形"
;
List<
GrapicsElem>
Lg=newArrayList（）;
GrapicsElemcur;
JLabellabel;
publicwindowsPaint（Stringtitle）{
init（）;
privatevoidinit（）{
addMouseListener（this）;
addMouseMotionListener（this）;
}
/**
*可以使用反射去掉判断语句、
*Class<
g=Class.forName（"
*g.newInstance（）;
*@return
*/
privateGrapicsElemnewInstance（）{
command=WinToolBar.Command;
if（command.equals（"
））{
returnnewRect（）;
}elseif（command.equals（"
圆形"
returnnewCircle（）;
线"
returnnewLine（）;
}
returnnull;
@Override
publicvoidpaint（Graphicsg）{
//TODOAuto-generatedmethodstub
super.paint（g）;
Graphics2Dg2d=（Graphics2D）g;
//g2d.setColor（cur.getColor（））;
//System.out.println（cur.getColor（））;
g2d.setStroke（newBasicStroke（10.0f））;
for（inti=0;
Lg.size（）;
GrapicsElemge=Lg.get（i）;
ge.draw（g）;
//@Override
//publicvoidrepaint（）{
////TODOAuto-generatedmethodstub
////TODOAuto-generatedmethodstub
////
//super.repaint（）;
////Threadthread=newThread（newRunnable（）{
////@Override
////publicvoidrun（）{
//////TODOAuto-generatedmethodstub
////try{
////SaveToFile（）;
////}catch（IOExceptione）{
//////TODOAuto-generatedcatchblock
////e.printStackTrace（）;
////}
////}
////}）;
////thread.start（）;
////
////ImageIconbg=newImageIcon（"
tmp.jpg"
////if（bg!
=null）{
////if（label!
=null）
////this.remove（label）;
////label=newJLabel（bg）;
////label.setBounds（0,0,bg.getIconWidth（）,bg.getIconHeight（））;
////this.add（label）;
////super.repaint（）;
////}
////
//}
privatevoidSaveToFile（）throwsIOException{
BufferedImagebimg=newBufferedImage（this.getWidth（）,this.getHeight（）,BufferedImage.TYPE_3BYTE_BGR）;
Graphics2Dg2d=bimg.createGraphics（）;
this.paint（g2d）;
ImageIO.write（bimg,"
jpg"
newFile（"
））;
publicvoidmousePressed（MouseEvente）{
Pointp=newPoint（e.getX（）,e.getY（））;
cur=newInstance（）;
cur.doMousePress（p）;
Lg.add（cur）;
publicvoidmouseDragged（MouseEvente）{
cur.doMouseDrag（p）;
repaint（）;
publicvoidmouseReleased（MouseEvente）{
cur.doMouseRelease（p）;
publicvoidmouseMoved（MouseEvente）{
publicvoidmouseClicked（MouseEvente）{
publicvoidmouseEntered（MouseEvente）{
publicvoidmouseExited（MouseEvente）{
WinToolBar.java
importjava.awt.event.ItemEvent;
importjava.awt.event.ItemListener;
importjavax.swing.JComboBox;
importjavax.swing.JSeparator;
publicclassWinToolBarextendsJToolBarimplementsActionListener{
publicstaticStringCommand="
JButtonbtn1,btn2,btn3;
//windowsPaintwinp;
publicWinToolBar（windowsPaintwinP）{
btn1=newJButton（"
btn2=newJButton（"
btn3=newJButton（"
this.add（btn1）;
this.add（btn2）;
this.add（btn3）;
btn1.addActionListener（（ActionListener）this）;
btn2.addActionListener（（ActionListener）this）;
btn3.addActionListener（（ActionListener）this）;
//this.winp=winP;
JComboBoxcom=newJComboBox（）;
com.addItem（"
红色"
蓝色"
黑色"
com.addItemListener（newItemListener（）{
@Override
publicvoiditemStateChanged（ItemEvente）{
//TODOAuto-gen
升级会员 