Reflect3DImage.java 文件源码

/**
 * 全倒影
 * 
 * @param originalImage
 * @return
 */
public static Bitmap createReflectedImage(Bitmap originalImage, int imageHeight) {
    int width = originalImage.getWidth();
    int height = originalImage.getHeight();
    Matrix matrix = new Matrix();
    matrix.preScale(1, -1);
    Bitmap reflectionImage = Bitmap.createBitmap(originalImage, 0, height - imageHeight, width, imageHeight, matrix, false);
    Bitmap bitmapWithReflection = Bitmap.createBitmap(width, (height + imageHeight), Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmapWithReflection);
    Paint defaultpPaint = new Paint();
    canvas.drawBitmap(originalImage, 0, 0, defaultpPaint);
    canvas.drawBitmap(reflectionImage, 0, height, defaultpPaint);
    Paint paint = new Paint();
    LinearGradient shader = new LinearGradient(0, originalImage.getHeight(), 0, bitmapWithReflection.getHeight(), 0x70ffffff, 0x00ffffff, TileMode.MIRROR);
    paint.setShader(shader);
    paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));
    canvas.drawRect(0, height, width, bitmapWithReflection.getHeight(), paint);
    reflectionImage.recycle();
    return bitmapWithReflection;
}