剛才把截屏程序放出去之后,收到了朋友 的建議,剛來這里就能認識他,很高興,現在又改進了一下,改進的地方如下
1,修復了選擇選區后,再改變大小時,當把右側的邊框拖過左側或者左側的邊框拖到右側或者上面的邊框拖過下面,只會顯示一條邊框的BUG.
2,在沒有截屏的時候,會有一條提示的字符串跟著鼠標走.
3,在點了截屏之后,主窗口會先隱藏起來,截完圖后才會彈出來
4,去掉了截屏時的自定義鼠標顯示,因為這樣的話,源代碼編譯之后,運行會出問題,因為別人的電腦上沒有我那個鼠標的圖片.
5,增加了可保存的圖片格式,現在可保存(JPG,GIF,PNG,BMP)格式
源代碼附上,可以直接自己編譯,打成JAR包.我這里也提供一下可執行JAR包的下載.
點擊下載可執行的JAR包
/**//*
* CaptureScreen.java
*
* Created on 2007年8月30日, 下午12:46
*
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
*/
package hadeslee.swing;
/** *//**
*
* @author lbf
*/
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import javax.imageio.*;
import java.awt.image.*;
public class CaptureScreen extends JFrame implements ActionListener
{
private JButton start,cancel,save;
private JPanel c;
private BufferedImage get;
/** *//** Creates a new instance of CaptureScreen */
public CaptureScreen() {
super("屏幕截取軟件(第二版)");
initWindow();
}
private void initWindow(){
start=new JButton("開始截取");
cancel=new JButton("退出");
save=new JButton("保存");
save.setEnabled(false);
save.addActionListener(this);
start.addActionListener(this);
cancel.addActionListener(this);
JPanel buttonJP=new JPanel();
c=new JPanel(new BorderLayout());
JLabel jl=new JLabel("屏幕截取",JLabel.CENTER);
JLabel jl1=new JLabel("作者：千里冰封",JLabel.CENTER);
jl.setFont(new Font("黑體",Font.BOLD,40));
jl1.setFont(new Font("宋體",Font.BOLD,20));
jl.setForeground(Color.RED);
jl1.setForeground(Color.BLUE);
c.add(jl,BorderLayout.CENTER);
c.add(jl1,BorderLayout.SOUTH);
buttonJP.add(start);
buttonJP.add(save);
buttonJP.add(cancel);
this.getContentPane().add(c,BorderLayout.CENTER);
this.getContentPane().add(buttonJP,BorderLayout.SOUTH);
this.setSize(300,300);
this.setLocationRelativeTo(null);
this.setVisible(true);
this.setAlwaysOnTop(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
private void updates(){
this.setVisible(true);
if(get!=null){
save.setEnabled(true);
ImageIcon ii=new ImageIcon(get);
JLabel jl=new JLabel(ii);
c.removeAll();
c.add(new JScrollPane(jl),BorderLayout.CENTER);
SwingUtilities.updateComponentTreeUI(this);
}
}
private void doStart(){
try{
this.setVisible(false);
Thread.sleep(500);//睡500毫秒是為了讓主窗完全不見
Robot ro=new Robot();
Toolkit tk=Toolkit.getDefaultToolkit();
Dimension di=tk.getScreenSize();
Rectangle rec=new Rectangle(0,0,di.width,di.height);
BufferedImage bi=ro.createScreenCapture(rec);
JFrame jf=new JFrame();
Temp temp=new Temp(jf,bi,di.width,di.height);
jf.getContentPane().add(temp,BorderLayout.CENTER);
jf.setUndecorated(true);
jf.setSize(di);
jf.setVisible(true);
jf.setAlwaysOnTop(true);
} catch(Exception exe){
exe.printStackTrace();
}
}
private void doSave(){
try{
JFileChooser jfc=new JFileChooser(".");
jfc.addChoosableFileFilter(new JPGfilter());
jfc.addChoosableFileFilter(new PNGfilter());
jfc.addChoosableFileFilter(new GIFfilter());
jfc.addChoosableFileFilter(new BMPfilter());
int i=jfc.showSaveDialog(this);
if(i==JFileChooser.APPROVE_OPTION){
File file=jfc.getSelectedFile();
String about="PNG";
String ext=file.toString().toLowerCase();
javax.swing.filechooser.FileFilter ff=jfc.getFileFilter();
if(ff instanceof JPGfilter){
if(!ext.endsWith(".jpg")){
String ns=ext+".jpg";
file=new File(ns);
about="JPG";
}
} else if(ff instanceof PNGfilter){
if(!ext.endsWith(".png")){
String ns=ext+".png";
file=new File(ns);
about="PNG";
}
}else if(ff instanceof BMPfilter){
if(!ext.endsWith(".bmp")){
String ns=ext+".bmp";
file=new File(ns);
about="BMP";
}
}else if(ff instanceof GIFfilter){
if(!ext.endsWith(".gif")){
String ns=ext+".gif";
file=new File(ns);
about="GIF";
}
}
if(ImageIO.write(get,about,file)){
JOptionPane.showMessageDialog(this,"保存成功！");
} else
JOptionPane.showMessageDialog(this,"保存失敗！");
}
} catch(Exception exe){
exe.printStackTrace();
}
}
public void actionPerformed(ActionEvent ae){
if(ae.getSource()==start){
doStart();
} else if(ae.getSource()==cancel){
System.exit(0);
} else if(ae.getSource()==save){
doSave();
}
}
//保存BMP格式的過濾器
private class BMPfilter extends javax.swing.filechooser.FileFilter{
public BMPfilter(){
}
public boolean accept(File file){
if(file.toString().toLowerCase().endsWith(".bmp")||
file.isDirectory()){
return true;
} else
return false;
}
public String getDescription(){
return "*.BMP(BMP圖像)";
}
}
//保存JPG格式的過濾器
private class JPGfilter extends javax.swing.filechooser.FileFilter{
public JPGfilter(){
}
public boolean accept(File file){
if(file.toString().toLowerCase().endsWith(".jpg")||
file.toString().toLowerCase().endsWith(".jpeg")||
file.isDirectory()){
return true;
} else
return false;
}
public String getDescription(){
return "*.JPG,*.JPEG(JPG,JPEG圖像)";
}
}
//保存GIF格式的過濾器
private class GIFfilter extends javax.swing.filechooser.FileFilter{
public GIFfilter(){
}
public boolean accept(File file){
if(file.toString().toLowerCase().endsWith(".gif")||
file.isDirectory()){
return true;
} else
return false;
}
public String getDescription(){
return "*.GIF(GIF圖像)";
}
}
//保存PNG格式的過濾器
private class PNGfilter extends javax.swing.filechooser.FileFilter{
public boolean accept(File file){
if(file.toString().toLowerCase().endsWith(".png")||
file.isDirectory()){
return true;
} else
return false;
}
public String getDescription(){
return "*.PNG(PNG圖像)";
}
}
//一個暫時類，用于顯示當前的屏幕圖像
private class Temp extends JPanel implements MouseListener,MouseMotionListener{
private BufferedImage bi;
private int width,height;
private int startX,startY,endX,endY,tempX,tempY;
private JFrame jf;
private Rectangle select=new Rectangle(0,0,0,0);//表示選中的區域
private Cursor cs=new Cursor(Cursor.CROSSHAIR_CURSOR);//表示一般情況下的鼠標狀態
private States current=States.DEFAULT;// 表示當前的編輯狀態
private Rectangle[] rec;//表示八個編輯點的區域
//下面四個常量,分別表示誰是被選中的那條線上的端點
public static final int START_X=1;
public static final int START_Y=2;
public static final int END_X=3;
public static final int END_Y=4;
private int currentX,currentY;//當前被選中的X和Y,只有這兩個需要改變
private Point p=new Point();//當前鼠標移的地點
private boolean showTip=true;//是否顯示提示.如果鼠標左鍵一按,則提示不再顯了
public Temp(JFrame jf,BufferedImage bi,int width,int height){
this.jf=jf;
this.bi=bi;
this.width=width;
this.height=height;
this.addMouseListener(this);
this.addMouseMotionListener(this);
initRecs();
}
private void initRecs(){
rec=new Rectangle[8];
for(int i=0;i<rec.length;i++){
rec[i]=new Rectangle();
}
}
public void paintComponent(Graphics g){
g.drawImage(bi,0,0,width,height,this);
g.setColor(Color.RED);
g.drawLine(startX,startY,endX,startY);
g.drawLine(startX,endY,endX,endY);
g.drawLine(startX,startY,startX,endY);
g.drawLine(endX,startY,endX,endY);
int x=startX<endX?startX:endX;
int y=startY<endY?startY:endY;
select=new Rectangle(x,y,Math.abs(endX-startX),Math.abs(endY-startY));
int x1=(startX+endX)/2;
int y1=(startY+endY)/2;
g.fillRect(x1-2,startY-2,5,5);
g.fillRect(x1-2,endY-2,5,5);
g.fillRect(startX-2,y1-2,5,5);
g.fillRect(endX-2,y1-2,5,5);
g.fillRect(startX-2,startY-2,5,5);
g.fillRect(startX-2,endY-2,5,5);
g.fillRect(endX-2,startY-2,5,5);
g.fillRect(endX-2,endY-2,5,5);
rec[0]=new Rectangle(x-5,y-5,10,10);
rec[1]=new Rectangle(x1-5,y-5,10,10);
rec[2]=new Rectangle((startX>endX?startX:endX)-5,y-5,10,10);
rec[3]=new Rectangle((startX>endX?startX:endX)-5,y1-5,10,10);
rec[4]=new Rectangle((startX>endX?startX:endX)-5,(startY>endY?startY:endY)-5,10,10);
rec[5]=new Rectangle(x1-5,(startY>endY?startY:endY)-5,10,10);
rec[6]=new Rectangle(x-5,(startY>endY?startY:endY)-5,10,10);
rec[7]=new Rectangle(x-5,y1-5,10,10);
if(showTip){
g.setColor(Color.CYAN);
g.fillRect(p.x,p.y,170,20);
g.setColor(Color.RED);
g.drawRect(p.x,p.y,170,20);
g.setColor(Color.BLACK);
g.drawString("請按住鼠標左鍵不放選擇截圖區",p.x,p.y+15);
}
}
//根據東南西北等八個方向決定選中的要修改的X和Y的座標
private void initSelect(States state){
switch(state){
case DEFAULT:
currentX=0;
currentY=0;
break;
case EAST:
currentX=(endX>startX?END_X:START_X);
currentY=0;
break;
case WEST:
currentX=(endX>startX?START_X:END_X);
currentY=0;
break;
case NORTH:
currentX=0;
currentY=(startY>endY?END_Y:START_Y);
break;
case SOUTH:
currentX=0;
currentY=(startY>endY?START_Y:END_Y);
break;
case NORTH_EAST:
currentY=(startY>endY?END_Y:START_Y);
currentX=(endX>startX?END_X:START_X);
break;
case NORTH_WEST:
currentY=(startY>endY?END_Y:START_Y);
currentX=(endX>startX?START_X:END_X);
break;
case SOUTH_EAST:
currentY=(startY>endY?START_Y:END_Y);
currentX=(endX>startX?END_X:START_X);
break;
case SOUTH_WEST:
currentY=(startY>endY?START_Y:END_Y);
currentX=(endX>startX?START_X:END_X);
break;
default:
currentX=0;
currentY=0;
break;
}
}
public void mouseMoved(MouseEvent me){
doMouseMoved(me);
initSelect(current);
if(showTip){
p=me.getPoint();
repaint();
}
}
//特意定義一個方法處理鼠標移動,是為了每次都能初始化一下所要選擇的地區
private void doMouseMoved(MouseEvent me){
if(select.contains(me.getPoint())){
this.setCursor(new Cursor(Cursor.MOVE_CURSOR));
current=States.MOVE;
} else{
States[] st=States.values();
for(int i=0;i<rec.length;i++){
if(rec[i].contains(me.getPoint())){
current=st[i];
this.setCursor(st[i].getCursor());
return;
}
}
this.setCursor(cs);
current=States.DEFAULT;
}
}
public void mouseExited(MouseEvent me){
}
public void mouseEntered(MouseEvent me){
}
public void mouseDragged(MouseEvent me){
int x=me.getX();
int y=me.getY();
if(current==States.MOVE){
startX+=(x-tempX);
startY+=(y-tempY);
endX+=(x-tempX);
endY+=(y-tempY);
tempX=x;
tempY=y;
}else if(current==States.EAST||current==States.WEST){
if(currentX==START_X){
startX+=(x-tempX);
tempX=x;
}else{
endX+=(x-tempX);
tempX=x;
}
}else if(current==States.NORTH||current==States.SOUTH){
if(currentY==START_Y){
startY+=(y-tempY);
tempY=y;
}else{
endY+=(y-tempY);
tempY=y;
}
}else if(current==States.NORTH_EAST||current==States.NORTH_EAST||
current==States.SOUTH_EAST||current==States.SOUTH_WEST){
if(currentY==START_Y){
startY+=(y-tempY);
tempY=y;
}else{
endY+=(y-tempY);
tempY=y;
}
if(currentX==START_X){
startX+=(x-tempX);
tempX=x;
}else{
endX+=(x-tempX);
tempX=x;
}
}else{
startX=tempX;
startY=tempY;
endX=me.getX();
endY=me.getY();
}
this.repaint();
}
public void mousePressed(MouseEvent me){
showTip=false;
tempX=me.getX();
tempY=me.getY();
}
public void mouseReleased(MouseEvent me){
if(me.isPopupTrigger()){
if(current==States.MOVE){
showTip=true;
p=me.getPoint();
startX=0;
startY=0;
endX=0;
endY=0;
repaint();
} else{
jf.dispose();
updates();
}
}
}
public void mouseClicked(MouseEvent me){
if(me.getClickCount()==2){
//Rectangle rec=new Rectangle(startX,startY,Math.abs(endX-startX),Math.abs(endY-startY));
Point p=me.getPoint();
if(select.contains(p)){
if(select.x+select.width<this.getWidth()&&select.y+select.height<this.getHeight()){
get=bi.getSubimage(select.x,select.y,select.width,select.height);
jf.dispose();
save.setEnabled(true);
updates();
}else{
int wid=select.width,het=select.height;
if(select.x+select.width>=this.getWidth()){
wid=this.getWidth()-select.x;
}
if(select.y+select.height>=this.getHeight()){
het=this.getHeight()-select.y;
}
get=bi.getSubimage(select.x,select.y,wid,het);
jf.dispose();
save.setEnabled(true);
updates();
}
}
}
}
}
public static void main(String args[]){
new CaptureScreen();
}
}
enum States{
NORTH_WEST(new Cursor(Cursor.NW_RESIZE_CURSOR)),//表示西北角
NORTH(new Cursor(Cursor.N_RESIZE_CURSOR)),
NORTH_EAST(new Cursor(Cursor.NE_RESIZE_CURSOR)),
EAST(new Cursor(Cursor.E_RESIZE_CURSOR)),
SOUTH_EAST(new Cursor(Cursor.SE_RESIZE_CURSOR)),
SOUTH(new Cursor(Cursor.S_RESIZE_CURSOR)),
SOUTH_WEST(new Cursor(Cursor.SW_RESIZE_CURSOR)),
WEST(new Cursor(Cursor.W_RESIZE_CURSOR)),
MOVE(new Cursor(Cursor.MOVE_CURSOR)),
DEFAULT(new Cursor(Cursor.DEFAULT_CURSOR));
private Cursor cs;
States(Cursor cs){
this.cs=cs;
}
public Cursor getCursor(){
return cs;
}
}
盡管千里冰封
依然擁有晴空
你我共同品味JAVA的濃香.
posted on 2007-08-30 14:40
千里冰封 閱讀(3440)
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