java放大镜源程序

1、/*用java语言编写，在JCeator中运行成功*这是一个放大镜的程序，运行后拖动屏幕左上角的方框，即可以看到放大效果*放大镜的原理：光的折射*/import java.awt *;import java.awt.ciit.*;import javax.swing.*;public class Magnifier extends J Frame private Container container = gctContciitPancQ;private int setCoordinateX;private int setCoordinatcY;private int absoluteCoor

2、dinateX;private int absolutcCoordinatcY;private int rclativcCoordinatcXVinicnMouscPrcsscd;private int rclativcC()()rdinatc，7VCrhciiM()uscPrcsscd;private boolean mousePressedNoprivate int magnifierSize = 100;private MagniflcrPancl magiiificrPicl = nrT MagiiifierPicl(magiiifierSizc);public MagilificrQ

3、 sctUndccoratcd(truc);sctRcsizablc(6dsc);container.add (magnificrPancI);addMouscListcncr(nc* MouseFunctionsO);addM()uscM()tic)nLi s tcncr(nrT MouscMotionFunctionsQ);updatcSizc(magiiificrSizc);this.sctVisiblc(truc);public static void main(String argfl) Magnifier magnifier = nuv MagnificrQ;magiiificr.

4、sctr)cfaukClosc()pcrati()n0 Frame. EX1T_()N_CL()SE);public void updatcSizc(int magilificrSizc) magiiificrP；incLsctMagnificrSizc(magtiificrSizc + 100);sctSizc(magiiificrSizc + 100, magilificrSizc + 100);validate：。；private class Mouse Func lions extends MouscAdaptcr public void m()uscPrcsscd(MouscEvcn

5、t c) if(c.gvtClickCountO = 1) /如果鼠标左键点了一下，说明按住了窗体 mouscPrcsscdXow = true;rclarivcCoordinatcXVCIicnMouscPrcsscd = c.gctXQ;rclarivcCoordinatcXnicnMouscPrcsscd = c.gctYQ;public void m(>uscRclcascd(MouseEvent c) mousePressedNow = false;private class M<>uscM()tic)nFunctions extends MouseMorionAd

6、apter public void m<)uscr)raggcd(MouscEvcnt c) if (mousePressedNow = true) /如果此时鼠标按下了，说明在拖拽窗体 absoluteCoordinateX = Magni ficr.this.gctLocationOnScrccnQ.x+ c.gctXQ;abs( >1 u tcC<)o rd in a tc Y = Magilificr.this.getLocarionOnScrccnQ.y+ c.gctYQ；setCoordinateX = absoluteCoordinateX-rclarivcCo

7、ordiiiatcXVClicnMouscPrcsscd;setCoordinatcY = abs()lutcC(x)rdiiiatcY-rulativuCoordinatcrYWhunVousuPrussud;magiiificrP；incLsctMagnificrL()cati()n(sctC()()rdinatcX>setCoordinate7);sctL(M：ari()n(sctC(x)rdinatcX, setCoordinateA7);class MagiiificrP；incl extends Panprivate Image screen!mage;private int

8、 magnifierSize;private int locationX;private int locationY;private Robot robot;public NIagiiificrP;incl(int magilifierSize) try robot = new Robot。； catch (AWTException c) scrcciilmagr = r()b()t.crcatcScrccnCaptiirc(n Rcctanglc(O, 0, Toolkit .gctDcfaultToolkitQ.gctSerccnSizcO.wdth, Toolkit .gctDcfaul

9、tToolkitQ.gctScrccnSizcO.hcit);this.magnificrSizc = magilifierSize;public void sctMagiiificrL(>cati<)n(int: locationX, int location7) this.locationX = locationX;this.locationY = locationY;repaintQ;public void sctMagnificrSizc(int magilifierSize) this.magnificrSizc = magilifierSize;public void paintC<)mp<)ncnt(CTraphics g) supcr.paintC()mponcnt(Graphics2r>) g);g.drawl magt(scrccnl mage,o,/目标矩形的第一个角的x坐标0,/目标矩形的第一个角的y坐标magilifierSize, /目标矩形的第二个角的x坐标 magilifierSize, /目标矩形的第二个角的y坐标 locationX + (magtiificrSizc / 4), / 源矩形的第一个角的 x 坐标 locationY