?? pausecanvas.java
字號:
package com.j2medev.chapter3;
import javax.microedition.lcdui.*;
public class PauseCanvas extends Canvas {
private LifeMIDlet midlet;
private int foucs = 1;//1代表重新開始 -1代表退出
private int height = -1;
private int margin = 4;
public static final String RESUME = "resume";
public static final String EXIT = "exit";
public static final int FOUCS_COLOR = 0x6699cc;
public PauseCanvas(LifeMIDlet midlet) {
this.midlet = midlet;
height = Font.getDefaultFont().getHeight();
}
public void paint(Graphics g){
//清除屏幕
int color = g.getColor();
g.setColor(0xFFFFFF);
g.fillRect(0,0,getWidth(),getHeight());
g.setColor(color);
//繪制矩形框
g.drawRect(getWidth()/4,getHeight()/8,getWidth()/2,height+2*margin);
g.drawRect(getWidth()/4,getHeight()/8+height+3*margin,getWidth()/2,height+2*margin);
//繪制焦點
g.setColor(FOUCS_COLOR);
if(foucs == 1){
g.fillRect(getWidth()/4+1,getHeight()/8+1,getWidth()/2-1,height+2*margin-1);
}else{
g.fillRect(getWidth()/4+1,getHeight()/8+height+3*margin+1,getWidth()/2-1,height+2*margin-1);
}
//繪制菜單的文字
g.setColor(color);
g.drawString(RESUME,getWidth()/2,getHeight()/8+margin+height,Graphics.BOTTOM|Graphics.HCENTER);
g.drawString(EXIT,getWidth()/2,getHeight()/8+2*height+4*margin,Graphics.BOTTOM|Graphics.HCENTER);
}
public void keyPressed(int keyCode){
//響應在暫停狀態下的用戶輸入,選擇退出還是重新啟動
int action = this.getGameAction(keyCode);
switch(action){
case Canvas.FIRE:
if(foucs >0){
midlet.restart();
}else{
midlet.exitMIDlet();
}
return;
case Canvas.DOWN:
case Canvas.UP:
foucs = -foucs;
break;
}
repaint();
}
}
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