axmol/cocos/ui/UIScale9Sprite.h

/****************************************************************************
 Copyright (c) 2013-2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

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#ifndef __cocos2d_libs__UIScale9Sprite__
#define __cocos2d_libs__UIScale9Sprite__

#include "2d/CCSprite.h"
#include "2d/CCSpriteFrame.h"
#include "2d/CCSpriteBatchNode.h"
#include "platform/CCPlatformMacros.h"
#include "ui/GUIExport.h"
#include "renderer/CCTrianglesCommand.h"

/**
 * @addtogroup ui
 * @{
 */
NS_CC_BEGIN
class DrawNode;
class Texture2D;

namespace ui {

    /**
     *@brief A 9-slice sprite for cocos2d-x.
     *
     * 9-slice scaling allows you to specify how scaling is applied
     * to specific areas of a sprite. With 9-slice scaling (3x3 grid),
     * you can ensure that the sprite does not become distorted when
     * scaled.
     * Note: When you set _scale9Enabled to false,
     * then you could call `scale9Sprite->getSprite()` to return the inner Sprite pointer.
     * Then you could call any methods of Sprite class with the return pointers.
     *
     */
    class CC_GUI_DLL Scale9Sprite : public Sprite
    {
    public:
        /**
         * Default constructor.
         * @js ctor
         * @lua new
         */
        Scale9Sprite();

        /**
         * Default destructor.
         * @js NA
         * @lua NA
         */
        virtual ~Scale9Sprite();

        /**
         * Builtin shader state.
         * Currently support Normal and Gray state.
         */
        enum class State
        {
            NORMAL,
            GRAY
        };

        enum class RenderingType
        {
            SIMPLE,
            SLICE
        };

    public:

        /**
         * @brief Create an empty Scale9Sprite.
         *
         * @return A Scale9Sprite instance.
         */
        static Scale9Sprite* create();

        /**
         * Creates a 9-slice sprite with a texture file, a delimitation zone and
         * with the specified cap insets.
         *
         * @see initWithFile(const char *file, const Rect& rect, const Rect& capInsets)
         * @param file A texture file name.
         * @param rect A delimitation zone.
         * @param capInsets A specified cap insets.
         * @return A Scale9Sprite instance.
         */
        static Scale9Sprite* create(const std::string& file, const Rect& rect,  const Rect& capInsets);

        /**
         * Creates a 9-slice sprite with a texture file. The whole texture will be
         * broken down into a 3×3 grid of equal blocks.
         *
         * @see initWithFile(const Rect& capInsets, const char *file)
         * @param capInsets A specified cap insets.
         * @param file A texture file name.
         * @return A Scale9Sprite instance.
         */
        static Scale9Sprite* create(const Rect& capInsets, const std::string& file);

        /**
         * Creates a 9-slice sprite with a texture file and a delimitation zone. The
         * texture will be broken down into a 3×3 grid of equal blocks.
         *
         * @see initWithFile(const char *file, const Rect& rect)
         * @param file A texture file name.
         * @param rect A delimitation zone.
         * @return A Scale9Sprite instance.
         */
        static Scale9Sprite* create(const std::string& file, const Rect& rect);

        /**
         * Creates a 9-slice sprite with a texture file. The whole texture will be
         * broken down into a 3×3 grid of equal blocks.
         *
         * @see initWithFile(const char *file)
         * @param file A texture file name.
         * @return A Scale9Sprite instance.
         */
        static Scale9Sprite* create(const std::string& file);

        /**
         * Creates a 9-slice sprite with an sprite frame.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness interact.
         * It respects the anchorPoint too.
         *
         * @see initWithSpriteFrame(SpriteFrame *spriteFrame)
         * @param spriteFrame  A sprite frame pointer.
         * @return A Scale9Sprite instance.
         */
        static Scale9Sprite* createWithSpriteFrame(SpriteFrame* spriteFrame);

        /**
         * Creates a 9-slice sprite with an sprite frame and the centre of its zone.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness interact.
         * It respects the anchorPoint too.
         *
         * @see initWithSpriteFrame(SpriteFrame *spriteFrame, const Rect& capInsets)
         * @param spriteFrame A sprite frame pointer.
         * @param capInsets  A delimitation zone.
         * @return A Scale9Sprite instance.
         */
        static Scale9Sprite* createWithSpriteFrame(SpriteFrame* spriteFrame, const Rect& capInsets);

        /**
         * Creates a 9-slice sprite with an sprite frame name.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness interact.
         * It respects the anchorPoint too.
         *
         * @see initWithSpriteFrameName(const char *spriteFrameName)
         * @param spriteFrameName A sprite frame name.
         * @return A Scale9Sprite instance.
         */
        static Scale9Sprite* createWithSpriteFrameName(const std::string& spriteFrameName);

        /**
         * Creates a 9-slice sprite with an sprite frame name and the centre of its zone.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness interact.
         * It respects the anchorPoint too.
         *
         * @see initWithSpriteFrameName(const char *spriteFrameName, const Rect& capInsets)
         * @param spriteFrameName A sprite frame name.
         * @param capInsets A delimitation zone.
         * @return A Scale9Sprite instance.
         */
        static Scale9Sprite* createWithSpriteFrameName(const std::string& spriteFrameName, const Rect& capInsets);

        // overridden methods that takes different parameters
        using Sprite::initWithFile;
        using Sprite::initWithSpriteFrame;
        using Sprite::initWithSpriteFrameName;
        using Sprite::setSpriteFrame;

        /**
         * Initializes a 9-slice sprite with a texture file, a delimitation zone and
         * with the specified cap insets.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness interact.
         * It respects the anchorPoint too.
         *
         * @param file The name of the texture file.
         * @param rect The rectangle that describes the sub-part of the texture that
         * is the whole image. If the shape is the whole texture, set this to the
         * texture's full rect.
         * @param capInsets The values to use for the cap insets.
         * @return True if initialize success, false otherwise.
         */
        virtual bool initWithFile(const std::string& file, const Rect& rect,  const Rect& capInsets);

        /**
         * Initializes a 9-slice sprite with a texture file and with the specified cap
         * insets.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness interact.
         * It respects the anchorPoint too.
         *
         * @param file The name of the texture file.
         * @param capInsets The values to use for the cap insets.
         * @return True if initializes success, false otherwise.
         */
        virtual bool initWithFile(const Rect& capInsets, const std::string& file);

        /**
         * Initializes a 9-slice sprite with an sprite frame and with the specified
         * cap insets.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness interact.
         * It respects the anchorPoint too.
         *
         * @param spriteFrame The sprite frame object.
         * @param capInsets The values to use for the cap insets.
         * @return True if initializes success, false otherwise.
         */
        virtual bool initWithSpriteFrame(SpriteFrame* spriteFrame, const Rect& capInsets);

        /**
         * Initializes a 9-slice sprite with an sprite frame name and with the specified
         * cap insets.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness interact.
         * It respects the anchorPoint too.
         *
         * @param spriteFrameName The sprite frame name.
         * @param capInsets The values to use for the cap insets.
         * @return True if initializes success, false otherwise.
         */
        virtual bool initWithSpriteFrameName(const std::string& spriteFrameName, const Rect& capInsets);

        //override function

        /**
         * Initializes a 9-slice sprite with a texture file and a delimitation zone. The
         * texture will be broken down into a 3×3 grid of equal blocks.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness interact.
         * It respects the anchorPoint too.
         *
         * @param file The name of the texture file.
         * @param rect The rectangle that describes the sub-part of the texture that
         * is the whole image. If the shape is the whole texture, set this to the
         * texture's full rect.
         * @return True if initializes success, false otherwise.
         */
        virtual bool initWithFile(const std::string& file, const Rect& rect) override;

        /**
         * Initializes a 9-slice sprite with a texture file. The whole texture will be
         * broken down into a 3×3 grid of equal blocks.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness interact.
         * It respects the anchorPoint too.
         *
         * @param file The name of the texture file.
         * @return True if initializes success, false otherwise.
         */
        virtual bool initWithFile(const std::string& file) override;

        /**
         * Initializes a 9-slice sprite with an sprite frame name.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness interact.
         * It respects the anchorPoint too.
         *
         * @param spriteFrameName The sprite frame name.
         * @return True if initializes success, false otherwise.
         */
        virtual bool initWithSpriteFrameName(const std::string& spriteFrameName) override;

        virtual bool init() override;

        /**
         * @brief Initializes a 9-slice sprite with an sprite instance.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness interact.
         * It respects the anchorPoint too.
         *
         * @param sprite The sprite instance.
         * @param rect A delimitation zone.
         * @param rotated Whether the sprite is rotated or not.
         * @param capInsets The values to use for the cap insets.
         * @return True if initializes success, false otherwise.
         */
        virtual bool init(Sprite* sprite, const Rect& rect, bool rotated, const Rect& capInsets);

        /**
         * @brief Initializes a 9-slice sprite with an sprite instance.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness interact.
         * It respects the anchorPoint too.
         *
         * @param sprite The sprite instance.
         * @param rect A delimitation zone.
         * @param capInsets The values to use for the cap insets.
         * @return True if initializes success, false otherwise.
         */
        virtual bool init(Sprite* sprite, const Rect& rect, const Rect& capInsets);

        /**
         * @brief Initializes a 9-slice sprite with an sprite instance.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness interact.
         * It respects the anchorPoint too.
         *
         * @param sprite The sprite instance.
         * @param rect A delimitation zone.
         * @param rotated Whether the sprite is rotated or not.
         * @param offset The offset when slice the sprite.
         * @param originalSize The original size of sprite.
         * @param capInsets The values to use for the cap insets.
         * @return True if initializes success, false otherwise.
         */
        virtual bool init(Sprite* sprite,
                          const Rect& rect,
                          bool rotated,
                          const Vec2 &offset,
                          const Size &originalSize,
                          const Rect& capInsets);

        /**
         * Creates and returns a new sprite object with the specified cap insets.
         * You use this method to add cap insets to a sprite or to change the existing
         * cap insets of a sprite. In both cases, you get back a new image and the
         * original sprite remains untouched.
         *
         * @param capInsets The values to use for the cap insets.
         * @return A Scale9Sprite instance.
         */
        Scale9Sprite* resizableSpriteWithCapInsets(const Rect& capInsets) const;


        /**
         * @brief Update Scale9Sprite with a specified sprite.
         *
         * @param sprite A sprite pointer.
         * @param rect A delimitation zone.
         * @param rotated Whether the sprite is rotated or not.
         * @param capInsets The Values to use for the cap insets.
         * @return True if update success, false otherwise.
         * @js NA
         */
        virtual bool updateWithSprite(Sprite* sprite,
                                      const Rect& rect,
                                      bool rotated,
                                      const Rect& capInsets);

        /**
         * @brief Update Scale9Sprite with a specified sprite.
         *
         * @param sprite A sprite pointer.
         * @param rect A delimitation zone.
         * @param rotated Whether the sprite is rotated or not.
         * @param offset The offset when slice the sprite.
         * @param originalSize The original size of the sprite.
         * @param capInsets The Values to use for the cap insets.
         * @return True if update success, false otherwise.
         * @js NA
         */
        virtual bool updateWithSprite(Sprite* sprite,
                                      const Rect& rect,
                                      bool rotated,
                                      const Vec2 &offset,
                                      const Size &originalSize,
                                      const Rect& capInsets);

        /**
         * @brief Change inner sprite's sprite frame.
         *
         * @param spriteFrame A sprite frame pointer.
         * @param capInsets The values to use for the cap insets.
         */
        virtual void setSpriteFrame(SpriteFrame * spriteFrame, const Rect& capInsets);

        /**
         * Change the state of 9-slice sprite.
         * @see `State`
         * @param state A enum value in State.
         * @since v3.4
         */
        void setState(State state);

        /**
         * Query the current bright state.
         * @return @see `State`
         * @since v3.7
         */
        State getState() const;

        /**
         * @brief Query the sprite's original size.
         *
         * @return Sprite size.
         */
        Size getOriginalSize() const;

        /**
         * @brief Change the preferred size of Scale9Sprite.
         *
         * @param size A delimitation zone.
         */
        void setPreferredSize(const Size& size);

        /**
         * @brief Query the Scale9Sprite's preferred size.
         *
         * @return Scale9Sprite's preferred size.
         */
        Size getPreferredSize() const;

        /**
         * @brief Change the left sprite's cap inset.
         *
         * @param leftInset The values to use for the cap inset.
         */
        void setInsetLeft(float leftInset);

        /**
         * @brief Query the left sprite's cap inset.
         *
         * @return The left sprite's cap inset.
         */
        float getInsetLeft() const;

        /**
         * @brief Change the top sprite's cap inset.
         *
         * @param topInset The values to use for the cap inset.
         */
        void setInsetTop(float topInset);

        /**
         * @brief Query the top sprite's cap inset.
         *
         * @return The top sprite's cap inset.
         */
        float getInsetTop() const;

        /**
         * @brief Change the right sprite's cap inset.
         *
         * @param rightInset The values to use for the cap inset.
         */
        void setInsetRight(float rightInset);

        /**
         * @brief Query the right sprite's cap inset.
         *
         * @return The right sprite's cap inset.
         */
        float getInsetRight() const;

        /**
         * @brief Change the bottom sprite's cap inset.
         *
         * @param bottomInset The values to use for the cap inset.

         */
        void setInsetBottom(float bottomInset);

        /**
         * @brief Query the bottom sprite's cap inset.
         *
         * @return The bottom sprite's cap inset.
         */
        float getInsetBottom() const;

        /**
         * @brief Toggle 9-slice feature.
         * If Scale9Sprite is 9-slice disabled, the Scale9Sprite will rendered as a normal sprite.
         * @warning: Don't use setScale9Enabled(false), use setRenderingType(RenderingType::SIMPLE) instead.
         *        The setScale9Enabled(false) is kept only for back back compatibility.
         * @param enabled True to enable 9-slice, false otherwise.
         * @js NA
         */
        void setScale9Enabled(bool enabled);

        /**
         * @brief Query whether the Scale9Sprite is enable 9-slice or not.
         *
         * @return True if 9-slice is enabled, false otherwise.
         * @js NA
         */
        bool isScale9Enabled() const;

        /// @} end of Children and Parent

        /**
         * @brief Get the original no 9-sliced sprite
         *
         * @return A sprite instance.
         */
        Sprite* getSprite();

        /**
         * @brief copies self to copy
         */
        void copyTo(Scale9Sprite* copy) const;


        /**
         * Set the slice sprite rendering type.
         * When setting to SIMPLE, only 4 vertexes is used to rendering.
         * otherwise 16 vertexes will be used to rendering.
         * @see RenderingType
         */
        void setRenderingType(RenderingType type);

        /**
         * Return the slice sprite rendering type.
         */
        RenderingType getRenderingType() const;

        /**
         * Set the Cap Insets in Points using the untrimmed size as reference
         */
        void setCapInsets(const Rect& insets);
        /**
         * Returns the Cap Insets
         */
        Rect getCapInsets() const;

        void resetRender();

    protected:
        void updateCapInset();
        void setupSlice9(Texture2D* texture, const Rect& capInsets);

        bool _isPatch9;

        float _insetLeft;
        float _insetRight;
        float _insetTop;
        float _insetBottom;

        Scale9Sprite::State _brightState;
        Scale9Sprite::RenderingType _renderingType;
    };
    
}}  //end of namespace
// end of ui group
/// @}

#endif /* defined(__cocos2d_libs__UIScale9Sprite__) */