axmol/cocos/2d/CCMenu.h

/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2008-2010 Ricardo Quesada

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#ifndef __CCMENU_H_
#define __CCMENU_H_

#include "CCMenuItem.h"
#include "CCLayer.h"
#include "CCVector.h"
#include "CCEventTouch.h"
#include "CCValue.h"

NS_CC_BEGIN

/**
 * @addtogroup GUI
 * @{
 * @addtogroup menu
 * @{
 */



/** @brief A Menu
* 
* Features and Limitation:
*  - You can add MenuItem objects in runtime using addChild:
*  - But the only accepted children are MenuItem objects
*/
class CC_DLL Menu : public Layer
{
public:
    enum class State
    {
        WAITING,
        TRACKING_TOUCH,
    };
    
    /** creates an empty Menu */
    static Menu* create();

    /** creates a Menu with MenuItem objects */
    static Menu* create(MenuItem* item, ...) CC_REQUIRES_NULL_TERMINATION;

    /** creates a Menu with a Array of MenuItem objects */
    static Menu* createWithArray(const Vector<MenuItem*>& arrayOfItems);

    /** creates a Menu with it's item, then use addChild() to add 
      * other items. It is used for script, it can't init with undetermined
      * number of variables.
    */
    static Menu* createWithItem(MenuItem* item);
    
    /** creates a Menu with MenuItem objects */
    static Menu* createWithItems(MenuItem *firstItem, va_list args);

    /** align items vertically */
    void alignItemsVertically();
    /** align items vertically with padding
    @since v0.7.2
    */
    void alignItemsVerticallyWithPadding(float padding);

    /** align items horizontally */
    void alignItemsHorizontally();
    /** align items horizontally with padding
    @since v0.7.2
    */
    void alignItemsHorizontallyWithPadding(float padding);

    /** align items in rows of columns */
    void alignItemsInColumns(int columns, ...) CC_REQUIRES_NULL_TERMINATION;
    void alignItemsInColumns(int columns, va_list args);
    void alignItemsInColumnsWithArray(const ValueVector& rows);

    /** align items in columns of rows */
    void alignItemsInRows(int rows, ...) CC_REQUIRES_NULL_TERMINATION;
    void alignItemsInRows(int rows, va_list args);
    void alignItemsInRowsWithArray(const ValueVector& columns);

    virtual bool isEnabled() const { return _enabled; }
    virtual void setEnabled(bool value) { _enabled = value; };

    virtual bool onTouchBegan(Touch* touch, Event* event);
    virtual void onTouchEnded(Touch* touch, Event* event);
    virtual void onTouchCancelled(Touch* touch, Event* event);
    virtual void onTouchMoved(Touch* touch, Event* event);
    
    // overrides
    virtual void removeChild(Node* child, bool cleanup) override;
    
    virtual void addChild(Node * child) override;
    virtual void addChild(Node * child, int zOrder) override;
    virtual void addChild(Node * child, int zOrder, int tag) override;
    
    virtual void onEnter() override;
    virtual void onExit() override;
    virtual void setOpacityModifyRGB(bool bValue) override {CC_UNUSED_PARAM(bValue);}
    virtual bool isOpacityModifyRGB(void) const override { return false;}

    virtual std::string getDescription() const override;

protected:
    /**
     * @js ctor
     */
    Menu() : _selectedItem(nullptr) {}
    virtual ~Menu();

    /** initializes an empty Menu */
    bool init();

    /** initializes a Menu with a NSArray of MenuItem objects */
    bool initWithArray(const Vector<MenuItem*>& arrayOfItems);

    /** whether or not the menu will receive events */
    bool _enabled;

    MenuItem* getItemForTouch(Touch * touch);
    State _state;
    MenuItem *_selectedItem;

private:
    CC_DISALLOW_COPY_AND_ASSIGN(Menu);
};

// end of GUI group
/// @}
/// @}

NS_CC_END

#endif//__CCMENU_H_