DragLayout.java 文件源码

private void animateView(float percent) {
    float f1 = 1 - percent * 0.3f;
    ViewHelper.setScaleX(vg_main, f1);   //主布局逐渐变大
    ViewHelper.setScaleY(vg_main, f1);
    ViewHelper.setTranslationX(vg_left, -vg_left.getWidth() / 2.3f
            + vg_left.getWidth() / 2.3f * percent);
    ViewHelper.setScaleX(vg_left, 0.5f + 0.5f * percent);//左边的布局逐渐变小
    ViewHelper.setScaleY(vg_left, 0.5f + 0.5f * percent);
    ViewHelper.setAlpha(vg_left, percent);
    if (isShowShadow) {
        ViewHelper.setScaleX(iv_shadow, f1 * 1.4f * (1 - percent * 0.12f));
        ViewHelper.setScaleY(iv_shadow, f1 * 1.85f * (1 - percent * 0.12f));
    }
    getBackground().setColorFilter(
            evaluate(percent, Color.BLACK, Color.TRANSPARENT),
            Mode.SRC_OVER);
}