SimpleCanvasRenderer.java

/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * 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 com.android.spritemethodtest;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;

import com.android.spritemethodtest.CanvasSurfaceView.Renderer;

/**
 * An extremely simple renderer based on the CanvasSurfaceView drawing
 * framework.  Simply draws a list of sprites to a canvas every frame.
 */
public class SimpleCanvasRenderer implements Renderer {
    private Bitmap[] mBitmaps;
    private final Paint mFramePaint = new Paint(Paint.FILTER_BITMAP_FLAG);
    private int renderCnt = 0;
    
    public void setBitmaps(Bitmap[] pBitmaps) {
    	mBitmaps = pBitmaps;
    }
    
    public void drawFrame(Canvas canvas) {
        if (mBitmaps != null) {
        	if (renderCnt%2 == 0) {
        		canvas.drawBitmap(mBitmaps[0], 0, 0, mFramePaint);
        	} else {
        		canvas.drawBitmap(mBitmaps[1], 0, 0, mFramePaint);
        	}
        	++renderCnt;
        }
    }

    public void sizeChanged(int width, int height) {
        
    }

}