Implement screen capture Remote Desktop control using Java
Last Update:2018-12-05
Source: Internet
Author: User
We mainly use the java. util. Robot class to capture the screen, which can capture a rectangular area of the screen. Through this class, we can also implement a remote desktop control program. Package COM. qiu. util; </P> <p> Import Java. io. *; </P> <p> Import java.net. *; </P> <p> Import javax. swing. *; </P> <p> Import Java. AWT. *; </P> <p> Import Java. AWT. event. *; </P> <p> Import Java. AWT. image. *; </P> <p> Import javax. imageIO. *; </P> <p> Import Java. io. *; </P> <p>/** @ author qiu_baichao </P> <p> * a simple screen capture </P> <p> * </P> <p>> **/</P> <p> public class screencapture {</P> <p> // test main </P> <p> Public static void main (string [] ARGs) throws exception {</P> <p> string userdir = system. getproperty ("user. dir "); </P> <p> file tempfile = new file (" D: "," temp.png "); </P> <p> screencapture capture = screencapture. getinstance (); </P> <p> capture. captureimage (); </P> <p> jframe frame = new jframe (); </P> <p> jpanel = new jpanel (); </P> <p> panel. setlayout (New borderlayout (); </P> <p> jlabel imagebox = new jlabel (); </P> <p> panel. add (borderlayout. center, imagebox); </P> <p> imagebox. seticon (capture. getpickedicon (); </P> <p> capture. savetofile (tempfile); </P> <p> capture. captureimage (); </P> <p> imagebox. seticon (capture. getpickedicon (); </P> <p> frame. setcontentpane (panel); </P> <p> frame. setsize (400,300); </P> <p> frame. show (); </P> <p> system. out. println ("over"); </P> <p >}</P> <p> private screencapture () {</P> <p> try {</P> <p> robot = new robot (); </P> <p >}</P> <p> catch (awtexception e) {</P> <p> system. err. println ("internal error:" + E); </P> <p> E. printstacktrace (); </P> <p >}</P> <p> jpanel CP = (jpanel) dialog. getcontentpane (); </P> <p> CP. setlayout (New borderlayout (); </P> <p> labfullscreenimage. addmouselistener (New mouseadapter () {</P> <p> Public void mousereleased (mouseevent EVn) {</P> <p> isfirstpoint = true; </P> <p> pickedimage = fullscreenimage. getsubimage (recx, recy, recw, rech); </P> <p> dialog. setvisible (false); </P> <p >}</P> <p >}); </P> <p> labfullscreenimage. addmousemotionlistener (New mousemotionadapter () {</P> <p> Public void mousedragged (mouseevent EVn) {</P> <p> If (isfirstpoint) {</P> <p> X1 = EVN. getx (); </P> <p> Y1 = EVN. gety (); </P> <p> isfirstpoint = false; </P> <p >}</P> <p> else {</P> <p> X2 = EVN. getx (); </P> <p> Y2 = EVN. gety (); </P> <p> int Maxx = math. max (x1, x2); </P> <p> int Maxy = math. max (Y1, Y2); </P> <p> int Minx = math. min (x1, x2); </P> <p> int miny = math. min (Y1, Y2); </P> <p> recx = Minx; </P> <p> recy = miny; </P> <p> recw = Maxx-Minx; </P> <p> rech = Maxy-miny; </P> <p> labfullscreenimage. drawrectangle (recx, recy, recw, rech ); </P> <p >}</P> <p> Public void mousemoved (mouseevent e) {</P> <p> labfullscreenimage. drawcross (E. getx (), E. gety (); </P> <p >}</P> <p >}); <br/> </P> <p> CP. add (borderlayout. center, labfullscreenimage); </P> <p> dialog. setcursor (cursor. getpredefinedcursor (cursor. crosshair_cursor); </P> <p> dialog. setalwaysontop (true); </P> <p> dialog. setmaximumsize (</P> <p> toolkit. getdefatooltoolkit (). getscreensize (); </P> <p> dialog. setundecorated (true); </P> <p> dialog. setsize (dialog. getmaximumsize (); </P> <p> dialog. setmodal (true); </P> <p >}</P> <p> // Singleton pattern </P> <p> Public static screencapture getinstance () {</P> <p> return defaultcapturer; </P> <p >}</P> <p>/** capture full screen MOOC */</P> <p> Public icon capturefullscreen () {</P> <p> fullscreenimage = robot. createscreencapture (New rectangle (</P> <p> toolkit. getdefatooltoolkit (). getscreensize (); </P> <p> imageicon = new imageicon (fullscreenimage); </P> <p> return icon; </P> <p >}</P> <p>/** capture an orthopedic area of the screen </P> <p> */</P> <p> public void captureimage () {</P> <p> fullscreenimage = robot. createscreencapture (New rectangle (</P> <p> toolkit. getdefatooltoolkit (). getscreensize (); </P> <p> imageicon = new imageicon (fullscreenimage); </P> <p> labfullscreenimage. seticon (icon); </P> <p> dicon. setvisible (true ); </P> <p >}</P> <p>/** obtain the captured bufferedimage */</P> <p> Public bufferedimage getpickedimage () {</P> <p> return pickedimage; </P> <p >}</P> <p>/** get the captured icon */</P> <p> Public imageicon getpickedicon () {</P> <p> return New imageicon (getpickedimage (); </P> <p >}</P> <p>/** stores the image as a file, PNG format </P> <p> * @ deprecated </P> <p> * Replaced by saveaspng (File file) </P> <p> **/</P> <p> @ deprecated </P> <p> Public void savetofile (File file) throws ioexception {</P> <p> ImageIO. write (getpickedimage (), defaultimageformater, file); </P> <p >}</P> <p>/*** save as a file, in PNG format */</P> <p> Public void saveaspng (File file) throws ioexception {</P> <p> ImageIO. write (getpickedimage (), "PNG", file ); </P> <p >}</P> <p>/** save as a JPEG image file */</P> <p> Public void saveasjpeg (File file File) throws ioexception {</P> <p> ImageIO. write (getpickedimage (), "Jpeg", file ); </P> <p >}</P> <p>/** write an outputstream */</P> <p> Public void write (outputstream out) throws ioexception {</P> <p> ImageIO. write (getpickedimage (), defaultimageformater, out ); </P> <p >}</P> <p> // Singleton Design Pattern </P> <p> Private Static screencapture defaultcapturer = new screencapture (); </P> <p> private int X1, Y1, X2, Y2; </P> <p> private int recx, recy, rech, recw; // captured image </P> <p> private Boolean isfirstpoint = true; </P> <p> private backgroundimage labfullscreenimage = new backgroundimage (); </P> <p> private Robot robot; </P> <p> private bufferedimage fullscreenimage; </P> <p> private bufferedimage pickedimage; </P> <p> private string defaultimageformater = "PNG"; </P> <p> private jdialog dialog = new jdialog (); </P> <p >}</P> <p>/** display image label */</P> <p> class backgroundimage extends jlabel {</P> <p> Public void paintcomponent (Graphics g) {</P> <p> super. paintcomponent (g); </P> <p> G. drawrect (X, Y, W, H); </P> <p> string area = integer. tostring (w) + "*" + integer. tostring (h); </P> <p> G. drawstring (area, x + (INT) W/2-15, Y + (INT) h/2); </P> <p> G. drawline (LinEx, 0, LinEx, getheight (); </P> <p> G. drawline (0, Liney, getwidth (), Liney); </P> <p >}</P> <p> Public void drawrectangle (int x, int y, int width, int height) {</P> <p> This. X = x; </P> <p> This. y = y; </P> <p> H = height; </P> <p> W = width; </P> <p> repaint (); </P> <p >}</P> <p> Public void drawcross (int x, int y) {</P> <p> LinEx = X; </P> <p> Liney = y; </P> <p> repaint (); </P> <p >}</P> <p> int LinEx, liney; </P> <p> int X, Y, H, W; </P> <p >}< br/>
