ScrollView的scrollToPercentHorizontal滚动距离相关笔记

烁灵 posted @ 2015年5月19日 14:23 in 未分类 with tags Cocos2dx , 4519 阅读

手册：

scrollToPercentHorizontal(float percent, float time, bool attenuated);//水平滚动容器内容到滚动视图宽度百分比位置上

然而这并没有什么卵用。

 

笔记：

第一个参数percent将使内部容器向左滚动（内部容器宽度 - 滚动层宽度） * percent 像素的距离

第二个参数time为滚动时间，单位为秒

第三个参数attenuated为true时使滚动过程拥有减速效果

 

所以想要使内部容器0.5s内减速向左滚动x像素可以调用

float percent = 100.0f * x / (scroll->getInnerContainerSize().width - scroll->getContentSize().width)

scroll->scrollToPercentHorizontal(percent, 0.5f, true);

 

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