Android Open Source - NotATop Help Surface View

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Back to project page NotATop.

License

The source code is released under:

GNU General Public License

Java Source Code

package com.gg.view;
//from  ww w . j a  v  a2 s . co  m
import com.gg.util.Constant;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.widget.Toast;

   

public class HelpSurfaceView extends SurfaceView implements SurfaceHolder.Callback,Runnable{  
        private SurfaceHolder surfaceHolder;       
        
        private MainActivity mainActivity;
        
        private Thread thread;     //???
        private Canvas canvas;    //????
        private Paint backgroundPaint;    //????
        private Matrix backgroundMatrix;  //??????????????
        private int width;      //??????
        private int height;    //??????
        private Bitmap backgroundImage;    //??????
        private boolean endFlag = true;   //???run??????????
        private int select = 0;      //????????????
//        private boolean touchFlag = false;      //???????????????????
//        private float firstX , endX;      //?????????????????,???????????????
        private double downX;
        private double downY;
        private double upX;
        private double upY;
        
        private Toast lastToast;
        
          
        public HelpSurfaceView(Context context) {    //?????
            super(context);  
            mainActivity = (MainActivity)context;
            
            surfaceHolder=this.getHolder();  
            surfaceHolder.addCallback(this);  
            thread=new Thread(this);   
            backgroundPaint = new Paint(); 
            backgroundPaint.setColor(Color.RED);
            backgroundMatrix = new Matrix();
            backgroundImage = BitmapFactory.decodeResource(this.getResources(), R.drawable.help1_bg);
            
            lastToast = Toast.makeText(context, "????????????", Toast.LENGTH_SHORT);
              
            this.setKeepScreenOn(true);  
        }  
        
        public void surfaceChanged(SurfaceHolder holder, int format, int width,  
                int height) {  
            // TODO Auto-generated method stub  
              
        }  
        
        public void surfaceCreated(SurfaceHolder holder) {     //????? 
          width = this.getWidth();
          height = this.getHeight();
          backgroundMatrix.setScale((float)(width) / backgroundImage.getWidth(), (float)(height) / backgroundImage.getHeight());
            thread.start();  
        }  
        
        
        public void surfaceDestroyed(SurfaceHolder holder) {  
            // TODO Auto-generated method stub  
          endFlag = false;    //run()???????
        }  
        
        //???????
        public boolean onTouchEvent(MotionEvent e) {
          switch(e.getAction()){
          case MotionEvent.ACTION_DOWN:
            //touchFlag = false;
            //firstX = e.getX();   //?????
            downX = Constant.convertX(e.getX());
            downY = Constant.convertY(e.getY());
            break;
            
          case MotionEvent.ACTION_UP:
            upX = Constant.convertX(e.getX());
            upY = Constant.convertY(e.getY());
            //endX = e.getX();   //??????
            //touchFlag = true;
            //if(touchFlag)
            //  if(firstX > endX)   //????
            //    select ++;
            //  else select --;   //????
            
            
            if(downX>1.0 && downY<0.3 && upX>1.0 && upY<0.3){
              mainActivity.getHandler().sendEmptyMessage(SurfaceViewFactory.MAIN_MENU);
            }
            
            if(downX>0.6 && downX<1.0 && downY>-0.2 && downY<0.2){
              if(upX>0.6 && upX<1.0 && upY>-0.2 && upY<0.2){
                select++;
              }
            }

            
//            if(select < 0){
//              select = 0;
//            }
            if(select > 4){
              select = 4;
              lastToast.show();
            }
            logic();    //????logic???????
            break;
          }
          return true;
          
        }
        
        
        public void run() {  
            while(endFlag){  
                draw();  
                try {  
                    Thread.sleep(1);  
                } catch (InterruptedException e) {  
                    // TODO Auto-generated catch block  
                    e.printStackTrace();  
                }  
            }  
        }  
        
        private void draw() {  
            try {  
                canvas=surfaceHolder.lockCanvas();//get a canvas example.  
                canvas.drawBitmap(backgroundImage, backgroundMatrix, backgroundPaint);  
            } catch (Exception e) {  
                // TODO: handle exception  
            }finally{  
                if (canvas!=null) {  
                    surfaceHolder.unlockCanvasAndPost(canvas);//submit a gooad canvas painting.  
                }   
            }  
              
        }
        
        private void logic() {
          switch(select) {   //?????5????
          case 0:
            backgroundImage = BitmapFactory.decodeResource(this.getResources(), R.drawable.help1_bg);
            break;
            
          case 1:
            backgroundImage = BitmapFactory.decodeResource(this.getResources(), R.drawable.help2_bg);
            break;
            
          case 2:
            backgroundImage = BitmapFactory.decodeResource(this.getResources(), R.drawable.help3_bg);
            break;
            
          case 3:
            backgroundImage = BitmapFactory.decodeResource(this.getResources(), R.drawable.help4_bg);
            break;
            
          case 4:
            backgroundImage = BitmapFactory.decodeResource(this.getResources(), R.drawable.help5_bg);
            break;
          }
          
          backgroundMatrix.setScale((float)(width) / backgroundImage.getWidth(), (float)(height) / backgroundImage.getHeight());  //??????
        }
    }

Java Source Code List

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