BitmapUtils.java

package me.storm.ninegag.util;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.view.View;

/**
 * Created by storm on 14-6-17.
 */
public class BitmapUtils {
    public static Bitmap drawViewToBitmap(View view, int width, int height, int downSampling) {
        return drawViewToBitmap(view, width, height, 0f, 0f, downSampling);
    }

    public static Bitmap drawViewToBitmap(View view, int width, int height, float translateX,
                                          float translateY, int downSampling) {
        float scale = 1f / downSampling;
        int bmpWidth = (int) (width * scale - translateX / downSampling);
        int bmpHeight = (int) (height * scale - translateY / downSampling);
        Bitmap dest = Bitmap.createBitmap(bmpWidth, bmpHeight, Bitmap.Config.ARGB_8888);
        Canvas c = new Canvas(dest);
        c.translate(-translateX / downSampling, -translateY / downSampling);
        if (downSampling > 1) {
            c.scale(scale, scale);
        }
        view.draw(c);
        return dest;
    }
}