axmol/cocos2dx/menu_nodes/CCMenuItem.h

/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2008-2011 Ricardo Quesada
Copyright (c) 2011      Zynga Inc.

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
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/

#ifndef __CCMENU_ITEM_H__
#define __CCMENU_ITEM_H__

// C++ includes
#include <functional>

// cocos2d includes
#include "base_nodes/CCNode.h"
#include "CCProtocols.h"
#include "cocoa/CCArray.h"

NS_CC_BEGIN

typedef std::function<void(Object*)> ccMenuCallback;

class LabelTTF;
class LabelAtlas;
class Sprite;
class SpriteFrame;
#define kItemSize 32
    
/**
 * @addtogroup GUI
 * @{
 * @addtogroup menu
 * @{
 */

/** @brief MenuItem base class
 *
 *  Subclass MenuItem (or any subclass) to create your custom MenuItem objects.
 */
class CC_DLL MenuItem : public NodeRGBA
{
public:
    /** Creates a MenuItem with no target/selector */
    static MenuItem* create();
    /** Creates a MenuItem with a target/selector */
    CC_DEPRECATED_ATTRIBUTE static MenuItem* create(Object *rec, SEL_MenuHandler selector);
    /** Creates a MenuItem with a target/selector */
    static MenuItem* create(const ccMenuCallback& callback);

    MenuItem()
    : _selected(false)
    , _enabled(false)            
	, _callback(nullptr)
    , _target(NULL)
    {}
    virtual ~MenuItem();

    /** Initializes a MenuItem with a target/selector */
    bool initWithCallback(const ccMenuCallback& callback);
    /** Initializes a MenuItem with a target/selector */
    CC_DEPRECATED_ATTRIBUTE bool initWithTarget( Object *rec, SEL_MenuHandler selector);

    /** Returns the outside box */
    Rect rect() const;
    /** Activate the item */
    virtual void activate();
    /** The item was selected (not activated), similar to "mouse-over" */
    virtual void selected();
    /** The item was unselected */
    virtual void unselected();
    /** returns whether or not the item is enabled */
    virtual bool isEnabled() const;
    /** enables or disables the item */
    virtual void setEnabled(bool value);
    /** returns whether or not the item is selected */
    virtual bool isSelected() const;

    /** set the callback to the menu item */
    void setCallback(const ccMenuCallback& callback);
    /** set the target/selector of the menu item*/
    CC_DEPRECATED_ATTRIBUTE void setTarget(Object *rec, SEL_MenuHandler selector);

protected:
    bool            _selected;
    bool            _enabled;
	// callback
	ccMenuCallback _callback;
	// If using the old API, the _target needs to be retained / released
	Object		*_target;
};

/** @brief An abstract class for "label" MenuItemLabel items 
 Any Node that supports the LabelProtocol protocol can be added.
 Supported nodes:
 - BitmapFontAtlas
 - LabelAtlas
 - LabelTTF
 */
class CC_DLL MenuItemLabel : public MenuItem
{
public:
    /** creates a MenuItemLabel with a Label, target and selector */
    CC_DEPRECATED_ATTRIBUTE static MenuItemLabel * create(Node*label, Object* target, SEL_MenuHandler selector);

	/** creates a MenuItemLabel with a Label and a callback */
    static MenuItemLabel * create(Node*label, const ccMenuCallback& callback);

    /** creates a MenuItemLabel with a Label. Target and selector will be nil */
    static MenuItemLabel* create(Node *label);

    MenuItemLabel()
    : _label(NULL)
    , _originalScale(0.0)
    {}
    virtual ~MenuItemLabel();

	/** initializes a MenuItemLabel with a Label, target and selector */
    bool initWithLabel(Node* label, const ccMenuCallback& callback);

    /** initializes a MenuItemLabel with a Label, target and selector */
    CC_DEPRECATED_ATTRIBUTE bool initWithLabel(Node* label, Object* target, SEL_MenuHandler selector);

    /** sets a new string to the inner label */
    void setString(const char * label);

    // Overrides
    virtual void activate() override;
    virtual void selected() override;
    virtual void unselected() override;
    virtual void setEnabled(bool enabled) override;
    
protected:
    Color3B    _colorBackup;
    float      _originalScale;

    /** the color that will be used to disable the item */
    CC_PROPERTY_PASS_BY_REF(Color3B, _disabledColor, DisabledColor);
    /** Label that is rendered. It can be any Node that implements the LabelProtocol */
    CC_PROPERTY(Node*, _label, Label);
};


/** @brief A MenuItemAtlasFont
 Helper class that creates a MenuItemLabel class with a LabelAtlas
 */
class CC_DLL MenuItemAtlasFont : public MenuItemLabel
{
public:
    /** creates a menu item from a string and atlas with a target/selector */
    static MenuItemAtlasFont* create(const char *value, const char *charMapFile, int itemWidth, int itemHeight, char startCharMap);
    /** creates a menu item from a string and atlas. Use it with MenuItemToggle */
    CC_DEPRECATED_ATTRIBUTE static MenuItemAtlasFont* create(const char *value, const char *charMapFile, int itemWidth, int itemHeight, char startCharMap, Object* target, SEL_MenuHandler selector);
    /** creates a menu item from a string and atlas. Use it with MenuItemToggle */
    static MenuItemAtlasFont* create(const char *value, const char *charMapFile, int itemWidth, int itemHeight, char startCharMap, const ccMenuCallback& callback);

    MenuItemAtlasFont(){}
    virtual ~MenuItemAtlasFont(){}

    /** initializes a menu item from a string and atlas with a target/selector */
    CC_DEPRECATED_ATTRIBUTE bool initWithString(const char *value, const char *charMapFile, int itemWidth, int itemHeight, char startCharMap, Object* target, SEL_MenuHandler selector);
    /** initializes a menu item from a string and atlas with a target/selector */
    bool initWithString(const char *value, const char *charMapFile, int itemWidth, int itemHeight, char startCharMap, const ccMenuCallback& callback);
};


/** @brief A MenuItemFont
 Helper class that creates a MenuItemLabel class with a Label
 */
class CC_DLL MenuItemFont : public MenuItemLabel
{
public:
    /** creates a menu item from a string without target/selector. To be used with MenuItemToggle */
    static MenuItemFont * create(const char *value);
    /** creates a menu item from a string with a target/selector */
    CC_DEPRECATED_ATTRIBUTE static MenuItemFont * create(const char *value, Object* target, SEL_MenuHandler selector);
    /** creates a menu item from a string with a target/selector */
    static MenuItemFont * create(const char *value, const ccMenuCallback& callback);

    MenuItemFont() : _fontSize(0), _fontName(""){}
    virtual ~MenuItemFont(){}

    /** initializes a menu item from a string with a target/selector */
    CC_DEPRECATED_ATTRIBUTE bool initWithString(const char *value, Object* target, SEL_MenuHandler selector);
    /** initializes a menu item from a string with a target/selector */
    bool initWithString(const char *value, const ccMenuCallback& callback);

    /** set default font size */
    static void setFontSize(unsigned int s);
    /** get default font size */
    static unsigned int fontSize();
    /** set the default font name */
    static void setFontName(const char *name);
    /** get the default font name */
    static const char *fontName();

    /** set font size
     * c++ can not overload static and non-static member functions with the same parameter types
     * so change the name to setFontSizeObj
     */
    void setFontSizeObj(unsigned int s);
    
    /** get font size */
    unsigned int fontSizeObj();
    
    /** set the font name 
     * c++ can not overload static and non-static member functions with the same parameter types
     * so change the name to setFontNameObj
     */
    void setFontNameObj(const char* name);

    /** returns the name of the Font */
    const char* getFontNameObj() const;

    /** deprecated Use getFontNameObj() instead */
    CC_DEPRECATED_ATTRIBUTE const char* fontNameObj() const { return getFontNameObj(); }
    
protected:
    void recreateLabel();
    
    unsigned int _fontSize;
    std::string _fontName;
};


/** @brief MenuItemSprite accepts Node<RGBAProtocol> objects as items.
 The images has 3 different states:
 - unselected image
 - selected image
 - disabled image
 
 @since v0.8.0
 */
class CC_DLL MenuItemSprite : public MenuItem
{
public:
    /** creates a menu item with a normal, selected and disabled image*/
    static MenuItemSprite * create(Node* normalSprite, Node* selectedSprite, Node* disabledSprite = NULL);
    /** creates a menu item with a normal and selected image with target/selector */
    CC_DEPRECATED_ATTRIBUTE static MenuItemSprite * create(Node* normalSprite, Node* selectedSprite, Object* target, SEL_MenuHandler selector);
    /** creates a menu item with a normal,selected  and disabled image with target/selector */
    CC_DEPRECATED_ATTRIBUTE static MenuItemSprite * create(Node* normalSprite, Node* selectedSprite, Node* disabledSprite, Object* target, SEL_MenuHandler selector);
    /** creates a menu item with a normal and selected image with a callable object */
    static MenuItemSprite * create(Node* normalSprite, Node* selectedSprite, const ccMenuCallback& callback);
    /** creates a menu item with a normal,selected  and disabled image with target/selector */
    static MenuItemSprite * create(Node* normalSprite, Node* selectedSprite, Node* disabledSprite, const ccMenuCallback& callback);

    MenuItemSprite()
    :_normalImage(NULL)
    ,_selectedImage(NULL)
    ,_disabledImage(NULL)
    {}

    /** initializes a menu item with a normal, selected  and disabled image with target/selector */
    CC_DEPRECATED_ATTRIBUTE bool initWithNormalSprite(Node* normalSprite, Node* selectedSprite, Node* disabledSprite, Object* target, SEL_MenuHandler selector);
    /** initializes a menu item with a normal, selected  and disabled image with a callable object */
    bool initWithNormalSprite(Node* normalSprite, Node* selectedSprite, Node* disabledSprite, const ccMenuCallback& callback);

    /**
     @since v0.99.5
     */
    virtual void selected();
    virtual void unselected();
    virtual void setEnabled(bool bEnabled);
    
protected:
    virtual void updateImagesVisibility();

    /** the image used when the item is not selected */
    CC_PROPERTY(Node*, _normalImage, NormalImage);
    /** the image used when the item is selected */
    CC_PROPERTY(Node*, _selectedImage, SelectedImage);
    /** the image used when the item is disabled */
    CC_PROPERTY(Node*, _disabledImage, DisabledImage);
};


/** @brief MenuItemImage accepts images as items.
 The images has 3 different states:
 - unselected image
 - selected image
 - disabled image
 
 For best results try that all images are of the same size
 */
class CC_DLL MenuItemImage : public MenuItemSprite
{
public:
    /** Creates an MenuItemImage. */
    static MenuItemImage* create();
    /** creates a menu item with a normal and selected image*/
    static MenuItemImage* create(const char *normalImage, const char *selectedImage);
    /** creates a menu item with a normal,selected  and disabled image*/
    static MenuItemImage* create(const char *normalImage, const char *selectedImage, const char *disabledImage);
    /** creates a menu item with a normal and selected image with target/selector */
    CC_DEPRECATED_ATTRIBUTE static MenuItemImage* create(const char *normalImage, const char *selectedImage, Object* target, SEL_MenuHandler selector);
    /** creates a menu item with a normal and selected image with a callable object */
    static MenuItemImage* create(const char *normalImage, const char *selectedImage, const ccMenuCallback& callback);

    /** creates a menu item with a normal,selected  and disabled image with target/selector */
    CC_DEPRECATED_ATTRIBUTE static MenuItemImage* create(const char *normalImage, const char *selectedImage, const char *disabledImage, Object* target, SEL_MenuHandler selector);
    /** creates a menu item with a normal,selected  and disabled image with a callable object */
    static MenuItemImage* create(const char *normalImage, const char *selectedImage, const char *disabledImage, const ccMenuCallback& callback);

    MenuItemImage(){}
    virtual ~MenuItemImage(){}

    bool init();
    /** initializes a menu item with a normal, selected  and disabled image with target/selector */
    CC_DEPRECATED_ATTRIBUTE bool initWithNormalImage(const char *normalImage, const char *selectedImage, const char *disabledImage, Object* target, SEL_MenuHandler selector);
    /** initializes a menu item with a normal, selected  and disabled image with a callable object */
    bool initWithNormalImage(const char *normalImage, const char *selectedImage, const char *disabledImage, const ccMenuCallback& callback);

    /** sets the sprite frame for the normal image */
    void setNormalSpriteFrame(SpriteFrame* frame);
    /** sets the sprite frame for the selected image */
    void setSelectedSpriteFrame(SpriteFrame* frame);
    /** sets the sprite frame for the disabled image */
    void setDisabledSpriteFrame(SpriteFrame* frame);
};


/** @brief A MenuItemToggle
 A simple container class that "toggles" it's inner items
 The inner items can be any MenuItem
 */
class CC_DLL MenuItemToggle : public MenuItem
{
public:
    /** creates a menu item from a Array with a callable object */
    static MenuItemToggle * createWithCallback(const ccMenuCallback& callback, Array* menuItems);
    /** creates a menu item from a list of items with a callable object */
    static MenuItemToggle* createWithCallback(const ccMenuCallback& callback, MenuItem* item, ...);
    /** creates a menu item with no target/selector and no items */
    static MenuItemToggle* create();
    /** creates a menu item with a item */
    static MenuItemToggle* create(MenuItem *item);
    /** creates a menu item from a Array with a target selector */
    CC_DEPRECATED_ATTRIBUTE static MenuItemToggle * createWithTarget(Object* target, SEL_MenuHandler selector, Array* menuItems);
    /** creates a menu item from a list of items with a target/selector */
    CC_DEPRECATED_ATTRIBUTE static MenuItemToggle* createWithTarget(Object* target, SEL_MenuHandler selector, MenuItem* item, ...);

    MenuItemToggle()
    : _selectedIndex(0)
    , _subItems(NULL)            
    {}
    virtual ~MenuItemToggle();

    /** initializes a menu item from a list of items with a target selector */
    CC_DEPRECATED_ATTRIBUTE bool initWithTarget(Object* target, SEL_MenuHandler selector, MenuItem* item, va_list args);
    /** initializes a menu item from a list of items with a callable object */
    bool initWithCallback(const ccMenuCallback& callback, MenuItem* item, va_list args);

    /** initializes a menu item with a item */
    bool initWithItem(MenuItem *item);
    /** add more menu item */
    void addSubItem(MenuItem *item);
    
    /** return the selected item */
    MenuItem* getSelectedItem();
    /** @deprecated Use getSelectedItem() instead */
    CC_DEPRECATED_ATTRIBUTE MenuItem* selectedItem() { return getSelectedItem(); }

    // Overrides
    virtual void activate() override;
    virtual void selected() override;
    virtual void unselected() override;
    virtual void setEnabled(bool var) override;

protected:
    /** returns the selected item */
    CC_PROPERTY(unsigned int, _selectedIndex, SelectedIndex);
    /** MutableArray that contains the subitems. You can add/remove items in runtime, and you can replace the array with a new one.
     @since v0.7.2
     */
    CC_PROPERTY(Array*, _subItems, SubItems);

};


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

NS_CC_END

#endif //__CCMENU_ITEM_H__