maincanvas.java

初学者的佳音 初学者的佳音 初学者的佳音

package x;


import javax.microedition.lcdui.*;





public class mainCanvas extends Canvas implements Runnable{
	
   static mainCanvas instance=null;	
   private Image backImg;
   private boolean bIfrun=false;
   public int width,height,fontHeight;
   private int tempTitleY;
   
   private ReaderMIDlet read;
   
   
   
   
    
   menuStruct menu=new menuStruct(null,null,null,null,null);   
   String strTitleName=null,strParent=null,strAdress=null;
   
   
   private int backX,backY;
   String[] StrMenu ;
   String[] strChild;
   Font font;
   
   
   public mainCanvas(String tableName,ReaderMIDlet read){
	   initialize();
	   
	      
	   this.read=read;
	   backX=0;
	   
	   tempTitleY=this.fontHeight+5;
	   backY=0;
	   backImg= ReaderMIDlet.getImage(ReaderMIDlet.IMG_PROXY_ON);
	   ReaderMIDlet.vector=RMSData.readRS(tableName);
	   
	   StrMenu=new String[ReaderMIDlet.vector.size()];
	   strChild=new String[ReaderMIDlet.vector.size()];
//	   System.out.println("ReaderMIDlet.vector.size()"+ReaderMIDlet.vector.size());
	   for(int i=0;i<ReaderMIDlet.vector.size();i++)
		{  
		   menu=(menuStruct)ReaderMIDlet.vector.elementAt(i);	
		   StrMenu[i]=menu.getTitle().toString();
		   strChild[i]=menu.getChild().toString();
		   System.out.println("strChild+"+strChild[i]);
		}
	    menu=(menuStruct)ReaderMIDlet.vector.elementAt(0);	
		strParent=menu.getParent();
		
		strAdress=menu.getAdress();
		ReaderMIDlet.strPreTable=strParent;
		selectedItem=0;
		
		
	 
	
    }
   protected void initialize() {
		

		width = getWidth();
		System.out.println("width="+width);
	
		height = getHeight();

		font = Font.getDefaultFont();
		
		fontHeight = font.getHeight();


   }
   public void  start(){
		Thread t=new Thread(this);
		bIfrun=true;
		t.start();
		
	}
	
   
   public void stop(){
		bIfrun=false;
	}
	
	
   private byte selectedItem=0;
 
   
  
   public void paint(Graphics g){
	   g.setColor(0,0,0);
	   g.fillRect(0,0,this.getWidth(),this.getHeight());
	   g.drawImage(backImg,backX,backY,Graphics.LEFT|Graphics.TOP);
	  
	   int y=0;
	   g.setColor(255,255,255);
	   g.fillRect(0,tempTitleY+(fontHeight*3/2)*selectedItem-2,width,this.fontHeight+4);
	   for(int i=0;i<StrMenu.length;i++){
		   
		   if(i==this.selectedItem){
			   g.setColor(0,0,0);
			  
		   }else{g.setColor(255,255,255);}//setcolor
		  
		   g.drawString(StrMenu[i],width/2-font.stringWidth(StrMenu[i])/2,tempTitleY+y,Graphics.LEFT|Graphics.TOP);
		   y+=this.fontHeight*3/2;
		   
	   }
	   
	   
     }
	
   public void keyPressed(int n) {
		switch(this.getGameAction(n)){
		 
		 case Canvas.RIGHT:
		
			
			 break;
		 case Canvas.LEFT:
		
			 break;
		 case Canvas.UP:
			
			
			 if(selectedItem==0){
				 selectedItem=(byte)(StrMenu.length-1);
			 }else{ 
				 
				 selectedItem--;
			 }
			 
			 break;
		 case Canvas.DOWN:
			if( selectedItem==StrMenu.length-1){
				selectedItem=0;
				
			}else{selectedItem++;}
			 break;
		 
		 case Canvas.FIRE:
			 
			 actionMenu();
			 
			 break;
		 
		 
		}
		this.repaint();
		
	}
   public void actionMenu(){
	   
	   if(this.strAdress.equals("none"))
	   {
		 
		    mainCanvas main=new mainCanvas(strChild[this.selectedItem],read);
			read.d.setCurrent(main);	   
	   }else{
		   
		 
		   DownFicForm fiction=new DownFicForm(strAdress);
		  
		  Display.getDisplay(ReaderMIDlet.instance).setCurrent(fiction);	 
		  
		   
		 
	   }
	    
	   
   }
   public void run(){
		while(bIfrun){
			
		}
		
	}
}