ProgressView.java 文件源码

protected void refreshDrawable(final Drawable drawable) {
    mDrawable = drawable;
    if (mDrawable == null) {
        mDrawable = new ColorDrawable(mColor);
    }
    int gravity = GRAVITY_FILL_VERTICAL | GRAVITY_LEFT;
    int orientation = ClipDrawable.HORIZONTAL;
    switch (mRotation) {
    case 90:
        gravity = GRAVITY_FILL_HORIZONTAL | GRAVITY_BOTTOM;
        orientation = ClipDrawable.VERTICAL;
        break;
    case 180:
        gravity = GRAVITY_FILL_VERTICAL | GRAVITY_RIGHT;
        orientation = ClipDrawable.HORIZONTAL;
        break;
    case 270:
        gravity = GRAVITY_FILL_HORIZONTAL | GRAVITY_TOP;
        orientation = ClipDrawable.VERTICAL;
        break;
    }
    mClipDrawable = new ClipDrawable(mDrawable, gravity, orientation);
    final Rect outRect = new Rect();
    getDrawingRect(outRect);
    mClipDrawable.setBounds(outRect);
    mClipDrawable.setLevel((int)(mProgress * mScale) + mMin);
    postInvalidate();
}