TypewriterRefreshDrawable.java 文件源码

private void setupDrawables() {
    parts = new ArrayList<>();
    parts.add(ContextCompat.getDrawable(getContext(), R.drawable.carriage_part1));
    parts.add(ContextCompat.getDrawable(getContext(), R.drawable.carriage_part2));
    parts.add(ContextCompat.getDrawable(getContext(), R.drawable.carriage_part3));

    carriageOffset = (int) getContext().getResources().getDimension(R.dimen.carriage_offset);
    pageOffset = (int) getContext().getResources().getDimension(R.dimen.page_offset);
    offset = (int) getContext().getResources().getDimension(R.dimen.offset);

    button = ContextCompat.getDrawable(getContext(), R.drawable.button);
    buttonPressed = ContextCompat.getDrawable(getContext(), R.drawable.button_pressed);

    page = new ScaleDrawable(ContextCompat.getDrawable(getContext(), R.drawable.page),
            TOP, -1, 1);
    page.setLevel(10000);
    pageBack =
            new ScaleDrawable(ContextCompat.getDrawable(getContext(), R.drawable.page_revers),
                    TOP, -1, 1);
    pageBack.setLevel(0);

    keyboard = ContextCompat.getDrawable(getContext(), R.drawable.keyboard_bg);
    typewriter = ContextCompat.getDrawable(getContext(), R.drawable.machine);
    space = ContextCompat.getDrawable(getContext(), R.drawable.space);
    spacePressed = ContextCompat.getDrawable(getContext(), R.drawable.space_pressed);
    letter = ContextCompat.getDrawable(getContext(), R.drawable.letter);
}