修复element宽高不一致时，可能被裁剪问题#1

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emile2013 wants to merge 6 commits intowhenSunSet:masterfrom

emile2013:master

Commits on Jan 3, 2020

修复element宽高不一致时，可能被裁剪问题
huangyuan
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Commits on Jan 7, 2020

单指操作不在子控件，进行事件分发,不作全局拦截
huangyuan
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Revert "单指操作不在子控件，进行事件分发,不作全局拦截"
huangyuan
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单指操作不在子控件，进行事件分发,不作全局拦截
huangyuan
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Commits on Jan 17, 2020

修改事件拦截机制
huangyuan
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fix
huangyuan
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