axmol/cocos/ui/UIScale9Sprite.h

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#ifndef __cocos2d_libs__UIScale9Sprite__
#define __cocos2d_libs__UIScale9Sprite__

#include "2d/CCNode.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;

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 Node , public cocos2d::BlendProtocol
    {
    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 intract.
         * 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 intract.
         * 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 intract.
         * 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 intract.
         * 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);
        
        /**
         * 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 intract.
         * 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 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 intract.
         * 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);
        
        /**
         * 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 intract.
         * 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 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 intract.
         * 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);
        
        /**
         * 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 intract.
         * 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.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness intract.
         * It respects the anchorPoint too.
         *
         * @param spriteFrame The sprite frame object.
         * @return True if initializes success, false otherwise.
         */
        virtual bool initWithSpriteFrame(SpriteFrame* spriteFrame);
        
        /**
         * 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 intract.
         * 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);
        
        /**
         * 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 intract.
         * 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 function
        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 intract.
         * 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 intract.
         * 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 intract.
         * 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);
        
        /**
         * @brief Initializes a 9-slice sprite with a sprite batchnode.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness intract.
         * It respects the anchorPoint too.
         *
         * @deprecated Use @see `init` instead.
         * @param batchnode A batch node pointer.
         * @param rect A delimitation zone.
         * @param rotated Whether the sprite in batch node is rotated or not.
         * @param capInsets The values to use for the cap insets.
         * @return True if initializes success, false otherwise.
         */
         CC_DEPRECATED(v3) virtual bool initWithBatchNode(SpriteBatchNode* batchnode,
                                                          const Rect& rect,
                                                          bool rotated,
                                                          const Rect& capInsets);
        /**
         * @brief Initializes a 9-slice sprite with a sprite batch node.
         * Once the sprite is created, you can then call its "setContentSize:" method
         * to resize the sprite will all it's 9-slice goodness intract.
         * It respects the anchorPoint too.
         *
         * @deprecated Use @see `init` instead.
         * @param batchnode A batch node pointer.
         * @param rect A delimitation zone.
         * @param capInsets The values to use for the cap insets.
         * @return True if initializes success, false otherwise.
         */
        CC_DEPRECATED(v3) virtual bool initWithBatchNode(SpriteBatchNode* batchnode, const Rect& rect, const Rect& capInsets);
        
        /**
         * Sets the source blending function.
         *
         * @param blendFunc A structure with source and destination factor to specify pixel arithmetic. e.g. {GL_ONE, GL_ONE}, {GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA}.
         * @js NA
         * @lua NA
         */
        virtual void setBlendFunc(const BlendFunc &blendFunc) override;
        
        /**
         * Returns the blending function that is currently being used.
         *
         * @return A BlendFunc structure with source and destination factor which specified pixel arithmetic.
         * @js NA
         * @lua NA
         */
        virtual const BlendFunc &getBlendFunc() const override;

        /**
         * 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 Update Scale9Sprite with a specified sprite.
         *
         * @deprecated Use @see `updateWithSprite` instead.
         * @param sprite A sprite pointer.
         * @param originalRect 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.
         */
        CC_DEPRECATED(v3) bool updateWithBatchNode(SpriteBatchNode* batchnode,
                                                   const Rect& originalRect,
                                                   bool rotated,
                                                   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 = Rect::ZERO);
        
        // overrides
        virtual void setContentSize(const Size & size) override;
        virtual void setAnchorPoint(const Vec2& anchorPoint) override;

        /**
         * 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 cap inset size.
         *
         * @param rect A delimitation zone.
         */
        void setCapInsets(const Rect& rect);
        
        /**
         * @brief Query the Scale9Sprite's preferred size.
         *
         * @return Scale9Sprite's cap inset.
         */
        Rect getCapInsets()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
        
        virtual void draw(Renderer *renderer, const Mat4 &transform, uint32_t flags) override;
        virtual void visit(Renderer *renderer, const Mat4 &parentTransform, uint32_t parentFlags) override;
        
        virtual void updateDisplayedOpacity(GLubyte parentOpacity) override;
        virtual void updateDisplayedColor(const Color3B& parentColor) override;
        virtual void disableCascadeColor() override;
        virtual void disableCascadeOpacity() override;
        virtual void setGLProgram(GLProgram *glprogram) override;
        virtual void setGLProgramState(GLProgramState *glProgramState) override;
        
        /**
         * @brief Get the original no 9-sliced sprite
         *
         * @return A sprite instance.
         */
        Sprite* getSprite()const;
        
        /**
         * Sets whether the widget should be flipped horizontally or not.
         *
         * @param flippedX true if the widget should be flipped horizontally, false otherwise.
         */
        virtual void setFlippedX(bool flippedX);
        
        /**
         * Returns the flag which indicates whether the widget is flipped horizontally or not.
         *
         * It only flips the texture of the widget, and not the texture of the widget's children.
         * Also, flipping the texture doesn't alter the anchorPoint.
         * If you want to flip the anchorPoint too, and/or to flip the children too use:
         * widget->setScaleX(sprite->getScaleX() * -1);
         *
         * @return true if the widget is flipped horizontally, false otherwise.
         */
        virtual bool isFlippedX()const;
        
        /**
         * Sets whether the widget should be flipped vertically or not.
         *
         * @param flippedY true if the widget should be flipped vertically, false otherwise.
         */
        virtual void setFlippedY(bool flippedY);

        /**
         * Return the flag which indicates whether the widget is flipped vertically or not.
         *
         * It only flips the texture of the widget, and not the texture of the widget's children.
         * Also, flipping the texture doesn't alter the anchorPoint.
         * If you want to flip the anchorPoint too, and/or to flip the children too use:
         * widget->setScaleY(widget->getScaleY() * -1);
         *
         * @return true if the widget is flipped vertically, false otherwise.
         */
        virtual bool isFlippedY()const;
        
        //override the setScale function of Node
        virtual void setScaleX(float scaleX) override;
        virtual void setScaleY(float scaleY) override;
        virtual void setScale(float scale) override;
        virtual void setScale(float scaleX, float scaleY) override;
        using Node::setScaleZ;
        virtual float getScaleX() const override;
        virtual float getScaleY() const override;
        virtual float getScale() const override;
        using Node::getScaleZ;
        virtual void setCameraMask(unsigned short mask, bool applyChildren = true) override;
        virtual void setGlobalZOrder(float globalZOrder) override;

        /**
         * 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;

        void resetRender();

    protected:
        void updateCapInset();
        void createSlicedSprites();
        void cleanupSlicedSprites();
        void adjustNoneScale9ImagePosition();
        void configureSimpleModeRendering();
        void applyBlendFunc();
        void updateBlendFunc(Texture2D *texture);
        std::vector<Vec2> calculateUV(Texture2D *tex, const Rect& capInsets,
                                     const Size& originalSize, const Vec4& offsets);
        std::vector<Vec2> calculateVertices(const Rect& capInsets, const Size& originalSize, const Vec4& offsets);
        TrianglesCommand::Triangles calculateTriangles(const std::vector<Vec2>& uv,
                                                      const std::vector<Vec2>& vertices);
        
        Rect _spriteRect;
        bool   _spriteFrameRotated;
        Rect _capInsetsInternal;
        
        Sprite* _scale9Image; //the original sprite
        
        bool _scale9Enabled;
        BlendFunc _blendFunc;
        
        /** Original sprite's size. */
        Size _originalSize;
        Vec2 _offset;
        /** Preferred sprite's size. By default the preferred size is the original size. */
        
        //if the preferredSize component is given as -1, it is ignored
        Size _preferredSize;
        
        /** Sets the left side inset */
        float _insetLeft;
        /** Sets the top side inset */
        float _insetTop;
        /** Sets the right side inset */
        float _insetRight;
        /** Sets the bottom side inset */
        float _insetBottom;
        
        bool _flippedX;
        bool _flippedY;
        bool _isPatch9;
        State _brightState;
        Vec2 _nonSliceSpriteAnchor;

        V3F_C4B_T2F* _sliceVertices;
        unsigned short* _sliceIndices;
        bool _sliceSpriteDirty;
        RenderingType _renderingType;
        
#if CC_SPRITE_DEBUG_DRAW
        DrawNode *_debugDrawNode;
#endif //CC_SPRITE_DEBUG_DRAW
        bool _insideBounds;   /// whether or not the sprite was inside bounds the previous frame
        TrianglesCommand _trianglesCommand;     ///
    };
    
}}  //end of namespace
// end of ui group
/// @}

#endif /* defined(__cocos2d_libs__UIScale9Sprite__) */