LoadingImageView.java 文件源码

private void initMaskBitmap(int maskColor) {
    Drawable drawable = getDrawable();
    if(drawable == null){
        return;
    }
    Bitmap bgd = ((BitmapDrawable) drawable).getBitmap();
    imageWidth = drawable.getIntrinsicWidth();
    imageHeight = drawable.getIntrinsicHeight();

    Bitmap fg = Bitmap.createBitmap(imageWidth, imageHeight, Bitmap.Config.ARGB_8888);
    Canvas fgCanvas = new Canvas(fg);
    fgCanvas.drawColor(maskColor);


    Bitmap bitmap = combineImages(bgd, fg);
    maskDrawable = new BitmapDrawable(bitmap);
    clipDrawable = new ClipDrawable(maskDrawable, gravity, orientaion);

    //shader = new BitmapShader(bitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
    //paint.setShader(shader);
}