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cocos2d-X 节点（UILayoutDefine.h）API

温馨提醒：为了大家能更好学习，强烈推荐大家看看本人的这篇博客 Cocos2d-X权威指南笔记

主要是一些定义，线性重力，相对对齐，和边距的设置

///cocos2d-x-3.0alpha0/extensions/CocoStudio/GUI/Layouts// 主要是一些定义，线性重力，相对对齐，和边距的设置#ifndef __UILAYOUTDEFINE_H__#define __UILAYOUTDEFINE_H__#include "cocos2d.h"#include "ExtensionMacros.h"NS_CC_EXT_BEGINclass UIMargin{public:    float left;    float top;    float right;    float bottom;    public:    UIMargin();    UIMargin(float l, float t, float r, float b);    UIMargin(const UIMargin& other);    UIMargin& operator= (const UIMargin& other);    void setMargin(float l, float t, float r, float b);    bool equals(const UIMargin& target) const;};typedef enum{    LINEAR_GRAVITY_NONE,    LINEAR_GRAVITY_LEFT,    LINEAR_GRAVITY_TOP,    LINEAR_GRAVITY_RIGHT,    LINEAR_GRAVITY_BOTTOM,    LINEAR_GRAVITY_CENTER_VERTICAL,    LINEAR_GRAVITY_CENTER_HORIZONTAL}UILinearGravity;typedef enum{    RELATIVE_ALIGN_NONE,    RELATIVE_ALIGN_PARENT_LEFT,    RELATIVE_ALIGN_PARENT_TOP,    RELATIVE_ALIGN_PARENT_RIGHT,    RELATIVE_ALIGN_PARENT_BOTTOM,    RELATIVE_CENTER_IN_PARENT,    RELATIVE_CENTER_HORIZONTAL,    RELATIVE_CENTER_VERTICAL,    RELATIVE_LOCATION_LEFT_OF_TOPALIGN,    RELATIVE_LOCATION_LEFT_OF_CENTER,    RELATIVE_LOCATION_LEFT_OF_BOTTOMALIGN,    RELATIVE_LOCATION_RIGHT_OF_TOPALIGN,    RELATIVE_LOCATION_RIGHT_OF_CENTER,    RELATIVE_LOCATION_RIGHT_OF_BOTTOMALIGN,    RELATIVE_LOCATION_ABOVE_LEFTALIGN,    RELATIVE_LOCATION_ABOVE_CENTER,    RELATIVE_LOCATION_ABOVE_RIGHTALIGN,    RELATIVE_LOCATION_BELOW_LEFTALIGN,    RELATIVE_LOCATION_BELOW_CENTER,    RELATIVE_LOCATION_BELOW_RIGHTALIGN}UIRelativeAlign;NS_CC_EXT_END#endif /* defined(__UILayoutDefine__) */