CircularImageView.java 文件源码

@Override
protected void onDraw(Canvas canvas) {
    final Drawable drawable = getDrawable();
    if (null == drawable)
        return;

    if (drawable instanceof NinePatchDrawable)
        return;

    final int width = getWidth();
    final int height = getHeight();
    final int layer = canvas.saveLayer(0, 0, width, height, this.nonePaint,
            Canvas.ALL_SAVE_FLAG);

    drawable.setBounds(0, 0, width, height);
    drawable.draw(canvas);

    if ((null == this.mask) || (this.mask.isRecycled())) {
        this.mask = createOvalBitmap(width, height);
    }

    canvas.drawBitmap(this.mask, 0, 0, this.maskPaint);
    canvas.restoreToCount(layer);
    drawBorder(canvas, width, height);
}