RoundCornerImageView.java

package com.thankcreate.care.control;

import com.thankcreate.care.R;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PorterDuff; 
import android.graphics.PorterDuffXfermode;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.widget.ImageView;

public class RoundCornerImageView extends ImageView {
    private Paint paint; 
    private int roundWidth = 5; 
    private int roundHeight = 5; 
    private Paint paint2; 
	public RoundCornerImageView(Context context, AttributeSet attrs,
			int defStyle) {
		super(context, attrs, defStyle);
		 init(context, attrs); 
	}

	public RoundCornerImageView(Context context, AttributeSet attrs) {
		super(context, attrs);
		 init(context, attrs); 
	}

	public RoundCornerImageView(Context context) {
		super(context);
		 init(context, null); 
	}
	
	
	  private void init(Context context, AttributeSet attrs) { 
	         
	        if(attrs != null) {    
	            TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.RoundCornerImageView);  
	            roundWidth= a.getDimensionPixelSize(R.styleable.RoundCornerImageView_roundWidth, roundWidth); 
	            roundHeight= a.getDimensionPixelSize(R.styleable.RoundCornerImageView_roundHeight, roundHeight); 
	        }else { 
	            float density = context.getResources().getDisplayMetrics().density; 
	            roundWidth = (int) (roundWidth*density); 
	            roundHeight = (int) (roundHeight*density); 
	        }  
	         
	        paint = new Paint(); 
	        paint.setColor(Color.WHITE); 
	        paint.setAntiAlias(true); 
	        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OUT)); 
	         
	        paint2 = new Paint(); 
	        paint2.setXfermode(null); 
	    } 
	     
	    @Override 
	    public void draw(Canvas canvas) { 
	        Bitmap bitmap = Bitmap.createBitmap(getWidth(), getHeight(), Config.ARGB_8888); 
	        Canvas canvas2 = new Canvas(bitmap); 
	        super.draw(canvas2); 
	        drawLiftUp(canvas2); 
	        drawRightUp(canvas2); 
	        drawLiftDown(canvas2); 
	        drawRightDown(canvas2); 
	        canvas.drawBitmap(bitmap, 0, 0, paint2); 
	        bitmap.recycle(); 
	    } 
	     
	    private void drawLiftUp(Canvas canvas) { 
	        Path path = new Path(); 
	        path.moveTo(0, roundHeight); 
	        path.lineTo(0, 0); 
	        path.lineTo(roundWidth, 0); 
	        path.arcTo(new RectF( 
	                0,  
	                0,  
	                roundWidth*2,  
	                roundHeight*2),  
	                -90,  
	                -90); 
	        path.close(); 
	        canvas.drawPath(path, paint); 
	    } 
	     
	    private void drawLiftDown(Canvas canvas) { 
	        Path path = new Path(); 
	        path.moveTo(0, getHeight()-roundHeight); 
	        path.lineTo(0, getHeight()); 
	        path.lineTo(roundWidth, getHeight()); 
	        path.arcTo(new RectF( 
	                0,  
	                getHeight()-roundHeight*2,  
	                0+roundWidth*2,  
	                getWidth()),  
	                90,  
	                90); 
	        path.close(); 
	        canvas.drawPath(path, paint); 
	    } 
	     
	    private void drawRightDown(Canvas canvas) { 
	        Path path = new Path(); 
	        path.moveTo(getWidth()-roundWidth, getHeight()); 
	        path.lineTo(getWidth(), getHeight()); 
	        path.lineTo(getWidth(), getHeight()-roundHeight); 
	        path.arcTo(new RectF( 
	                getWidth()-roundWidth*2,  
	                getHeight()-roundHeight*2,  
	                getWidth(),  
	                getHeight()), 0, 90); 
	        path.close(); 
	        canvas.drawPath(path, paint); 
	    } 
	     
	    private void drawRightUp(Canvas canvas) { 
	        Path path = new Path(); 
	        path.moveTo(getWidth(), roundHeight); 
	        path.lineTo(getWidth(), 0); 
	        path.lineTo(getWidth()-roundWidth, 0); 
	        path.arcTo(new RectF( 
	                getWidth()-roundWidth*2,  
	                0,  
	                getWidth(),  
	                0+roundHeight*2),  
	                -90,  
	                90); 
	        path.close(); 
	        canvas.drawPath(path, paint); 
	    } 
}