/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2012-2018 DragonBones team and other contributors
 *
 * 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 to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#ifndef DRAGONBONES_SLOT_H
#define DRAGONBONES_SLOT_H

#include "TransformObject.h"

#include "../geom/ColorTransform.h"
#include "../model/ArmatureData.h"

DRAGONBONES_NAMESPACE_BEGIN
/**
 * - The slot attached to the armature, controls the display status and properties of the display object.
 * A bone can contain multiple slots.
 * A slot can contain multiple display objects, displaying only one of the display objects at a time,
 * but you can toggle the display object into frame animation while the animation is playing.
 * The display object can be a normal texture, or it can be a display of a child armature, a grid display object,
 * and a custom other display object.
 * @see dragonBones.Armature
 * @see dragonBones.Bone
 * @see dragonBones.SlotData
 * @version DragonBones 3.0
 * @language en_US
 */
/**
 * - 插槽附着在骨骼上，控制显示对象的显示状态和属性。
 * 一个骨骼上可以包含多个插槽。
 * 一个插槽中可以包含多个显示对象，同一时间只能显示其中的一个显示对象，但可以在动画播放的过程中切换显示对象实现帧动画。
 * 显示对象可以是普通的图片纹理，也可以是子骨架的显示容器，网格显示对象，还可以是自定义的其他显示对象。
 * @see dragonBones.Armature
 * @see dragonBones.Bone
 * @see dragonBones.SlotData
 * @version DragonBones 3.0
 * @language zh_CN
 */
class Slot : public TransformObject
{
public:
    /**
     * - Displays the animated state or mixed group name controlled by the object, set to null to be controlled by all animation states.
     * @default null
     * @see dragonBones.AnimationState#displayControl
     * @see dragonBones.AnimationState#name
     * @see dragonBones.AnimationState#group
     * @version DragonBones 4.5
     * @language en_US
     */
    /**
     * - 显示对象受到控制的动画状态或混合组名称，设置为 null 则表示受所有的动画状态控制。
     * @default null
     * @see dragonBones.AnimationState#displayControl
     * @see dragonBones.AnimationState#name
     * @see dragonBones.AnimationState#group
     * @version DragonBones 4.5
     * @language zh_CN
     */
    std::string displayController;

public:
    /**
     * @internal
     */
    bool _colorDirty;
    BlendMode _blendMode;
    /**
     * @internal
     */
    int _zOrder;
    /**
     * @internal
     */
    float _pivotX;
    /**
     * @internal
     */
    float _pivotY;

    /**
     * @internal
     */
    ColorTransform _colorTransform;
    /**
     * @internal
     */
    const SlotData* _slotData;
    /**
     * @internal
     */
    DisplayData* _displayData;
    /**
     * @internal
     */
    DeformVertices* _deformVertices;
    void* _rawDisplay;
    void* _meshDisplay;
    /**
     * @internal
     */
    std::vector<int>* _cachedFrameIndices;

protected:
    bool _displayDirty;
    bool _zOrderDirty;
    bool _visibleDirty;
    bool _blendModeDirty;
    bool _transformDirty;
    bool _visible;
    int _displayIndex;
    int _animationDisplayIndex;
    int _cachedFrameIndex;
    Matrix _localMatrix;
    std::vector<DisplayData*> _displayDatas;
    std::vector<std::pair<void*, DisplayType>> _displayList;
    const std::vector<DisplayData*>* _rawDisplayDatas;
    BoundingBoxData* _boundingBoxData;
    TextureData* _textureData;
    void* _display;
    Armature* _childArmature;
    /**
     * @private
     */
    Bone* _parent;

public:
    Slot() :
        _deformVertices(nullptr),
        _rawDisplay(nullptr),
        _meshDisplay(nullptr)
    {}
    virtual ~Slot() {};

protected:
    virtual void _onClear() override;

    virtual void _initDisplay(void* value, bool isRetain) = 0;
    virtual void _disposeDisplay(void* value, bool isRelease) = 0;
    virtual void _onUpdateDisplay() = 0;
    virtual void _addDisplay() = 0;
    virtual void _replaceDisplay(void* value, bool isArmatureDisplay) = 0;
    virtual void _removeDisplay() = 0;
    virtual void _updateZOrder() = 0;
    virtual void _updateFrame() = 0;
    virtual void _updateMesh() = 0;
    virtual void _updateTransform() = 0;
    virtual void _identityTransform() = 0;
    /**
     * - Support default skin data.
     */
    DisplayData* _getDefaultRawDisplayData(unsigned displayIndex) const;
    void _updateDisplay();
    void _updateDisplayData();
    void _updateGlobalTransformMatrix(bool isCache);

public:
    /**
     * @internal
     */
    virtual void _updateVisible() = 0;
    virtual void _updateBlendMode() = 0;
    virtual void _updateColor() = 0;

public:
    /**
     * @internal
     */
    bool _setDisplayIndex(int value, bool isAnimation = false);
    /**
     * @internal
     */
    bool _setZorder(int value);
    /**
     * @internal
     */
    bool _setColor(const ColorTransform& value);
    /**
     * @internal
     */
    bool _setDisplayList(const std::vector<std::pair<void*, DisplayType>>& value);

public:
    /**
     * @internal
     */
    void init(const SlotData* slotData, Armature* armatureValue, void* rawDisplay, void* meshDisplay);
    /**
     * @internal
     */
    void update(int cacheFrameIndex);
    /**
     * @private
     */
    void updateTransformAndMatrix();
    /**
     * @private
     */
    void replaceDisplayData(DisplayData* displayData, int displayIndex);
    /**
     * - Check whether a specific point is inside a custom bounding box in the slot.
     * The coordinate system of the point is the inner coordinate system of the armature.
     * Custom bounding boxes need to be customized in Dragonbones Pro.
     * @param x - The horizontal coordinate of the point.
     * @param y - The vertical coordinate of the point.
     * @version DragonBones 5.0
     * @language en_US
     */
    /**
     * - 检查特定点是否在插槽的自定义边界框内。
     * 点的坐标系为骨架内坐标系。
     * 自定义边界框需要在 DragonBones Pro 中自定义。
     * @param x - 点的水平坐标。
     * @param y - 点的垂直坐标。
     * @version DragonBones 5.0
     * @language zh_CN
     */
    bool containsPoint(float x, float y);
    /**
     * - Check whether a specific segment intersects a custom bounding box for the slot.
     * The coordinate system of the segment and intersection is the inner coordinate system of the armature.
     * Custom bounding boxes need to be customized in Dragonbones Pro.
     * @param xA - The horizontal coordinate of the beginning of the segment.
     * @param yA - The vertical coordinate of the beginning of the segment.
     * @param xB - The horizontal coordinate of the end point of the segment.
     * @param yB - The vertical coordinate of the end point of the segment.
     * @param intersectionPointA - The first intersection at which a line segment intersects the bounding box from the beginning to the end. (If not set, the intersection point will not calculated)
     * @param intersectionPointB - The first intersection at which a line segment intersects the bounding box from the end to the beginning. (If not set, the intersection point will not calculated)
     * @param normalRadians - The normal radians of the tangent of the intersection boundary box. [x: Normal radian of the first intersection tangent, y: Normal radian of the second intersection tangent] (If not set, the normal will not calculated)
     * @returns Intersection situation. [1: Disjoint and segments within the bounding box, 0: Disjoint, 1: Intersecting and having a nodal point and ending in the bounding box, 2: Intersecting and having a nodal point and starting at the bounding box, 3: Intersecting and having two intersections, N: Intersecting and having N intersections]
     * @version DragonBones 5.0
     * @language en_US
     */
    /**
     * - 检查特定线段是否与插槽的自定义边界框相交。
     * 线段和交点的坐标系均为骨架内坐标系。
     * 自定义边界框需要在 DragonBones Pro 中自定义。
     * @param xA - 线段起点的水平坐标。
     * @param yA - 线段起点的垂直坐标。
     * @param xB - 线段终点的水平坐标。
     * @param yB - 线段终点的垂直坐标。
     * @param intersectionPointA - 线段从起点到终点与边界框相交的第一个交点。 （如果未设置，则不计算交点）
     * @param intersectionPointB - 线段从终点到起点与边界框相交的第一个交点。 （如果未设置，则不计算交点）
     * @param normalRadians - 交点边界框切线的法线弧度。 [x: 第一个交点切线的法线弧度, y: 第二个交点切线的法线弧度] （如果未设置，则不计算法线）
     * @returns 相交的情况。 [-1: 不相交且线段在包围盒内, 0: 不相交, 1: 相交且有一个交点且终点在包围盒内, 2: 相交且有一个交点且起点在包围盒内, 3: 相交且有两个交点, N: 相交且有 N 个交点]
     * @version DragonBones 5.0
     * @language zh_CN
     */
    int intersectsSegment(
        float xA, float yA, float xB, float yB,
        Point* intersectionPointA = nullptr,
        Point* intersectionPointB = nullptr,
        Point* normalRadians = nullptr
    );
    /**
     * - Forces the slot to update the state of the display object in the next frame.
     * @version DragonBones 4.5
     * @language en_US
     */
    /**
     * - 强制插槽在下一帧更新显示对象的状态。
     * @version DragonBones 4.5
     * @language zh_CN
     */
    inline void invalidUpdate()
    {
        _displayDirty = true;
        _transformDirty = true;
    }
    /**
     * - The visible of slot's display object.
     * @default true
     * @version DragonBones 5.6
     * @language en_US
     */
    /**
     * - 插槽的显示对象的可见。
     * @default true
     * @version DragonBones 5.6
     * @language zh_CN
     */
    inline bool getVisible() const
    {
        return _visible;
    }
    void setVisible(bool value);
    /**
     * - The index of the display object displayed in the display list.
     * @example
     * TypeScript style, for reference only.
     * <pre>
     *     let slot = armature.getSlot("weapon");
     *     slot.displayIndex = 3;
     *     slot.displayController = "none";
     * </pre>
     * @version DragonBones 4.5
     * @language en_US
     */
    /**
     * - 此时显示的显示对象在显示列表中的索引。
     * @example
     * TypeScript 风格，仅供参考。
     * <pre>
     *     let slot = armature.getSlot("weapon");
     *     slot.displayIndex = 3;
     *     slot.displayController = "none";
     * </pre>
     * @version DragonBones 4.5
     * @language zh_CN
     */
    inline int getDisplayIndex() const
    {
        return _displayIndex;
    }
    void setDisplayIndex(int value);

    /**
     * - The slot name.
     * @see dragonBones.SlotData#name
     * @version DragonBones 3.0
     * @language en_US
     */
    /**
     * - 插槽名称。
     * @see dragonBones.SlotData#name
     * @version DragonBones 3.0
     * @language zh_CN
     */
    inline const std::string& getName() const
    {
        return _slotData->name;
    }
    /**
     * - Contains a display list of display objects or child armatures.
     * @version DragonBones 3.0
     * @language en_US
     */
    /**
     * - 包含显示对象或子骨架的显示列表。
     * @version DragonBones 3.0
     * @language zh_CN
     */
    inline std::vector<std::pair<void*, DisplayType>> getDisplayList() const
    {
        return _displayList;
    }
    void setDisplayList(const std::vector<std::pair<void*, DisplayType>>& value);
    /**
     * @private
     */
    inline const std::vector<DisplayData*>* getRawDisplayDatas() const 
    {
        return _rawDisplayDatas;
    }
    void setRawDisplayDatas(const std::vector<DisplayData*>* value);
    /**
     * - The slot data.
     * @see dragonBones.SlotData
     * @version DragonBones 4.5
     * @language en_US
     */
    /**
     * - 插槽数据。
     * @see dragonBones.SlotData
     * @version DragonBones 4.5
     * @language zh_CN
     */
    const SlotData* getSlotData() const
    {
        return _slotData;
    }
    /**
     * - The custom bounding box data for the slot at current time.
     * @version DragonBones 5.0
     * @language en_US
     */
    /**
     * - 插槽此时的自定义包围盒数据。
     * @version DragonBones 5.0
     * @language zh_CN
     */
    inline BoundingBoxData* getBoundingBoxData() const
    {
        return _boundingBoxData;
    }
    /**
     * @private
     */
    inline void* getRawDisplay() const
    {
        return _rawDisplay;
    }
    /**
     * @private
     */
    inline void* getMeshDisplay() const
    {
        return _meshDisplay;
    }
    /**
     * - The display object that the slot displays at this time.
     * @example
     * TypeScript style, for reference only.
     * <pre>
     *     let slot = armature.getSlot("text");
     *     slot.display = new yourEngine.TextField();
     * </pre>
     * @version DragonBones 3.0
     * @language en_US
     */
    /**
     * - 插槽此时显示的显示对象。
     * @example
     * TypeScript 风格，仅供参考。
     * <pre>
     *     let slot = armature.getSlot("text");
     *     slot.display = new yourEngine.TextField();
     * </pre>
     * @version DragonBones 3.0
     * @language zh_CN
     */
    inline void* getDisplay() const
    {
        return _display;
    }
    /**
     * - Deprecated, please refer to {@link #display}.
     * @deprecated
     * @language en_US
     */
    /**
     * - 已废弃，请参考 {@link #display}。
     * @deprecated
     * @language zh_CN
     */
    void setDisplay(void* value, DisplayType displayType);
    /**
     * - The child armature that the slot displayed at current time.
     * @example
     * TypeScript style, for reference only.
     * <pre>
     *     let slot = armature.getSlot("weapon");
     * let prevChildArmature = slot.childArmature;
     * if (prevChildArmature) {
     * prevChildArmature.dispose();
     *     }
     *     slot.childArmature = factory.buildArmature("weapon_blabla", "weapon_blabla_project");
     * </pre>
     * @version DragonBones 3.0
     * @language en_US
     */
    /**
     * - 插槽此时显示的子骨架。
     * 注意，被替换的对象或子骨架并不会被回收，根据语言和引擎的不同，需要额外处理。
     * @example
     * TypeScript 风格，仅供参考。
     * <pre>
     *     let slot = armature.getSlot("weapon");
     * let prevChildArmature = slot.childArmature;
     * if (prevChildArmature) {
     * prevChildArmature.dispose();
     *     }
     *     slot.childArmature = factory.buildArmature("weapon_blabla", "weapon_blabla_project");
     * </pre>
     * @version DragonBones 3.0
     * @language zh_CN
     */
    inline Armature* getChildArmature() const
    {
        return _childArmature;
    }
    void setChildArmature(Armature* value);
    /**
     * - The parent bone to which it belongs.
     * @version DragonBones 3.0
     * @language en_US
     */
    /**
     * - 所属的父骨骼。
     * @version DragonBones 3.0
     * @language zh_CN
     */
    inline Bone* getParent() const
    {
        return _parent;
    }
};

DRAGONBONES_NAMESPACE_END
#endif // DRAGONBONES_SLOT_H