对Layer的理解
/////cocos2d-x-3.0alpha0/extensions/CocoStudio/GUI/System // 获取 UIInputManager,添加/移除 widget ,设置 UILayer 的可见 性 #ifndef __UILAYER_H__ #define __UILAYER_H__ #include "cocos2d.h" #include "ExtensionMacros.h" #include "../BaseClasses/UIRootWidget.h" #include "../System/UIInputManager.h" NS_CC_EXT_BEGIN class UILayer : public Layer { public: /** * Default constructor */ UILayer(); /** * Default destructor */ virtual ~UILayer(); /** * Allocates and initializes a widget. */ static UILayer *create(void); //initializes state of uilayer. //初始化 uilayer 的状态 virtual bool init(); virtual void onEnter(); virtual void onExit(); virtual void onEnterTransitionDidFinish(); virtual bool onTouchBegan(Touch *pTouch,Event *pEvent); virtual void onTouchMoved(Touch *pTouch,Event *pEvent); virtual void onTouchEnded(Touch *pTouch,Event *pEvent); virtual void onTouchCancelled(Touch *pTouch,Event *pEvent); /** * Add a widget to UILayer,for drawing. //为绘制添加一个 eidget 到 UILayer * * @param widget. */ void addWidget(UIWidget* widget); /** * Remove a widget from UILayer. * * @param widget. * * @param cleanup true 所有 children widgets 运行的 所有 action 都将 删除,false otherwise. */ void removeWidget(UIWidget* widget); /** * Sets whether the UILayer is visible 可见 * * 默认值是 true ,默认可见 * * @param visible true if the UILayer is visible,false if the UILayer is hidden. */ virtual void setVisible(bool visible); /** * Finds a widget whose tag is equal tag param from widget tree. //从 widget 树上查找 tag 等于输入参数的 widget * * @param tag. */ UIWidget* getWidgetByTag(int tag); /** * Seek a widget whose name is equal name param from widget tree. //从 widget 树上查找 name 等于输入参数的 widget * * @param name. */ UIWidget* getWidgetByName(const char* name); /** * Gets UIInputManager. * * UIInputManager 管理 UILayer 的触摸. * * @return UIInputManager. */ UIInputManager* getInputManager(); /** * Remove and clean up all of UILayer's widget. //移除并清理所有的 UILayer's widget. */ virtual void clear(); /** * Gets root widget of UILayer. * * @return UIRootWidget,"UIRootWidget" is the root widget of UILayer. */ UIRootWidget* getRootWidget(); protected: UIRootWidget* _rootWidget; UIInputManager* _inputManager; }; NS_CC_EXT_END #endif /* defined(__UILAYER_H__) */