src/org/zeroxlab/graphics/DrawCircle2View.java

/*
 * Copyright (C) 2010 0xlab - http://0xlab.org/
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.zeroxlab.graphics;

import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.TextView;

import android.util.Log;

import java.util.ArrayList;
import java.util.Random;


class DrawCircle2View extends SurfaceView {

    private SurfaceHolder mSurfaceHolder;

    protected void doDraw() {
        Canvas canvas = mSurfaceHolder.lockCanvas();
        drawCircle(canvas);
        mSurfaceHolder.unlockCanvasAndPost(canvas);
    }

    private void drawCircle(Canvas canvas) {

        Random mRandom = new Random();

        int height = getHeight();
        int width  = getWidth();

        int cx = (int)((mRandom.nextInt() % (width*0.8) ) + (width*0.1));
        int cy = (int)((mRandom.nextInt() % (height*0.8) ) + (height*0.1));
        int  r = (int)((mRandom.nextInt() % (width*0.3) ) + (width*0.2));

        int color;
        Paint p;
        for(int i=6; i>=0; i--) {
            color = (0x33252525 | mRandom.nextInt()); 
            p = new Paint();
            p.setAntiAlias(true);
            p.setStyle(Paint.Style.FILL);
            p.setColor(color);
            canvas.drawCircle(cx, cy, (int)(r*(1 + i/10.0)), p);
        }
    }

    public DrawCircle2View(Context context, AttributeSet attrs) {
        super(context, attrs);
        mSurfaceHolder = getHolder();
    }
}