#pragma once

#ifndef TFX_INCLUDED

#define TFX_INCLUDED

#include <memory></memory>

// TnzCore includes

#include "tsmartpointer.h"

#include "tpersist.h"

#include "texception.h"

#include "ttile.h"

#include "tgeometry.h"

// TnzBase includes

#include "tparamchange.h"

#undef DVAPI

#undef DVVAR

#ifdef TFX_EXPORTS

#define DVAPI DV_EXPORT_API

#define DVVAR DV_EXPORT_VAR

#else

#define DVAPI DV_IMPORT_API

#define DVVAR DV_IMPORT_VAR

#endif

//===================================================================

//    Forward declarations

class TFxImp;

class TFx;

class TParam;

class TFxAttributes;

class TParamContainer;

class TParamVar;

class TRenderSettings;

class TParamUIConcept;

//===================================================================

class DVAPI TFxPort {

  friend class TFx;

protected:

  TFx *m_owner;    //!< This is an input port of m_owner

  int m_groupIdx;  //!< Dynamic group index this belongs to in m_owner (-1 if

                   //! none)

  bool m_isControl;

public:

  TFxPort(bool isControl)

      : m_owner(0), m_groupIdx(-1), m_isControl(isControl) {}

  virtual ~TFxPort() {}

  virtual TFx *getFx() const = 0;

  virtual void setFx(TFx *)  = 0;

  bool isConnected() const { return getFx() != 0; }

  bool isaControlPort() const { return m_isControl; }

  int getGroupIndex() const { return m_groupIdx; }

  TFx *getOwnerFx() const { return m_owner; }

  void setOwnerFx(TFx *fx) { m_owner = fx; }

private:

  // Not copiable

  TFxPort(const TFxPort &);

  TFxPort &operator=(const TFxPort &);

};

//-------------------------------------------------------------------

template <class t=""></class>

class TFxPortT : public TFxPort {

  friend class TFx;

protected:

  T *m_fx;

public:

  TFxPortT(bool isControl = false) : TFxPort(isControl), m_fx(0) {}

  ~TFxPortT() {

    if (m_fx) {

      m_fx->removeOutputConnection(this);

      m_fx->release();

    }

  }

  TFx *getFx() const override { return m_fx; }

  void setFx(TFx *fx) override {

    if (m_fx) m_fx->removeOutputConnection(this);

    if (fx == 0) {

      if (m_fx) m_fx->release();

      m_fx = 0;

    } else {

      T *fxt = dynamic_cast<t *="">(fx);</t>

      if (!fxt) throw TException("Fx: port type mismatch");

      fxt->addRef();

      if (m_fx) m_fx->release();

      m_fx = fxt;

      m_fx->addOutputConnection(this);

    }

  }

  T *operator->() {

    assert(m_fx);

    return m_fx;

  }

};

//===================================================================

/*

  \brief A TFxPortDynamicGroup represents a group of fx ports with the

  same name prefix whose ports that are added or removed dynamically by

  Toonz on user request.

  \sa The TFx::dynamicPortsGroup() method.

*/

class DVAPI TFxPortDynamicGroup {

public:

  typedef std::vector<tfxport *=""> PortsContainer;</tfxport>

public:

  TFxPortDynamicGroup(const std::string &portsPrefix, int minPortsCount = 1);

  ~TFxPortDynamicGroup();

  //! Returns the group's displayed ports prefix (ports added to the group \b

  //! must

  //! have this prefix).

  const std::string &portsPrefix() const { return m_portsPrefix; }

  //! Returns the minimal number of ports to be displayed in the group. The

  //! group

  //!  must not <\B> be initialized in an fx implementation with more ports

  //! than

  //! this number.

  int minPortsCount() const { return m_minPortsCount; }

  //! Returns the list of ports currently in the group (may contain empty

  //! ports).

  const PortsContainer &ports() const { return m_ports; }

  //! Equivalent to checking the portName prefix against the stored one.

  bool contains(const std::string &portName) const {

    return (strncmp(m_portsPrefix.c_str(), portName.c_str(),

                    m_portsPrefix.size()) == 0);

  }

private:

  std::string m_portsPrefix;  //!< Name prefix of each stored port

  int m_minPortsCount;        //!< Ports count \a should not be smaller

  std::vector<tfxport *=""> m_ports;  //!< \b Owned ports (deleted on destruction)</tfxport>

private:

  friend class TFx;

  // Not copyable

  TFxPortDynamicGroup(const TFxPortDynamicGroup &);

  TFxPortDynamicGroup &operator=(const TFxPortDynamicGroup &);

  void addPort(TFxPort *port);

  void removePort(

      TFxPort *port);  //!< Removes  and deletes <\I> the specified port

  void clear();

};

typedef TFxPortDynamicGroup TFxPortDG;

//===================================================================

class DVAPI TFxTimeRegion {

public:

  TFxTimeRegion();

  TFxTimeRegion(double start, double end);

  static TFxTimeRegion createUnlimited();

  TFxTimeRegion &operator+=(const TFxTimeRegion &rhs) {

    m_start = std::min(m_start, rhs.m_start);

    m_end   = std::max(m_end, rhs.m_end);

    return *this;

  }

  TFxTimeRegion &operator+=(double shift) {

    m_start += shift;

    m_end += shift;

    return *this;

  }

  TFxTimeRegion &operator-=(double shift) { return operator+=(-shift); }

  bool contains(double time) const;

  bool isUnlimited() const;

  bool isEmpty() const;

  bool getFrameCount(int &count) const;

  int getFirstFrame() const;

  int getLastFrame() const;

  double m_start;

  double m_end;

};

inline DVAPI TFxTimeRegion operator+(const TFxTimeRegion &tr1,

                                     const TFxTimeRegion &tr2) {

  return TFxTimeRegion(tr1) += tr2;

}

inline DVAPI TFxTimeRegion operator+(const TFxTimeRegion &tr1, double shift) {

  return TFxTimeRegion(tr1) += shift;

}

inline DVAPI TFxTimeRegion operator-(const TFxTimeRegion &tr1, double shift) {

  return TFxTimeRegion(tr1) -= shift;

}

//===================================================================

class DVAPI TFxChange {

public:

  TFx *m_fx;

  double m_firstAffectedFrame;

  double m_lastAffectedFrame;

  bool m_dragging;

  static double m_minFrame;

  static double m_maxFrame;

public:

  TFxChange(TFx *fx, double firstAffectedFrame, double lastAffectedFrame,

            bool dragging)

      : m_fx(fx)

      , m_firstAffectedFrame(firstAffectedFrame)

      , m_lastAffectedFrame(lastAffectedFrame)

      , m_dragging(dragging) {}

private:

  TFxChange();

};

//------------------------------------------------------------------------------

class TFxParamChange final : public TFxChange {

public:

  TFxParamChange(TFx *fx, double firstAffectedFrame, double lastAffectedFrame,

                 bool dragging);

  TFxParamChange(TFx *fx, const TParamChange &src);

};

//------------------------------------------------------------------------------

class TFxPortAdded final : public TFxChange {

public:

  TFxPortAdded(TFx *fx) : TFxChange(fx, m_minFrame, m_maxFrame, false) {}

  ~TFxPortAdded() {}

};

//------------------------------------------------------------------------------

class TFxPortRemoved final : public TFxChange {

public:

  TFxPortRemoved(TFx *fx) : TFxChange(fx, m_minFrame, m_maxFrame, false) {}

  ~TFxPortRemoved() {}

};

//------------------------------------------------------------------------------

class TFxParamAdded final : public TFxChange {

public:

  TFxParamAdded(TFx *fx) : TFxChange(fx, m_minFrame, m_maxFrame, false) {}

  ~TFxParamAdded() {}

};

//------------------------------------------------------------------------------

class TFxParamRemoved final : public TFxChange {

public:

  TFxParamRemoved(TFx *fx) : TFxChange(fx, m_minFrame, m_maxFrame, false) {}

  ~TFxParamRemoved() {}

};

//------------------------------------------------------------------------------

class TFxParamsUnlinked final : public TFxChange {

public:

  TFxParamsUnlinked(TFx *fx) : TFxChange(fx, m_minFrame, m_maxFrame, false) {}

  ~TFxParamsUnlinked() {}

};

//===================================================================

class DVAPI TFxObserver {

public:

  TFxObserver() {}

  virtual ~TFxObserver() {}

  virtual void onChange(const TFxChange &change) = 0;

  virtual void onChange(const TFxPortAdded &change) {

    onChange(static_cast<const &="" tfxchange="">(change));</const>

  }

  virtual void onChange(const TFxPortRemoved &change) {

    onChange(static_cast<const &="" tfxchange="">(change));</const>

  }

  virtual void onChange(const TFxParamAdded &change) {

    onChange(static_cast<const &="" tfxchange="">(change));</const>

  }

  virtual void onChange(const TFxParamRemoved &change) {

    onChange(static_cast<const &="" tfxchange="">(change));</const>

  }

  virtual void onChange(const TFxParamsUnlinked &change) {

    onChange(static_cast<const &="" tfxchange="">(change));</const>

  }

};

//===================================================================

class TFxInfo {

public:

  std::string m_name;

  bool m_isHidden;

public:

  TFxInfo() {}

  TFxInfo(const std::string &name, bool isHidden)

      : m_name(name), m_isHidden(isHidden) {}

};

//===================================================================

#ifdef _WIN32

template class DVAPI TSmartPointerT<tfx>;</tfx>

#endif

typedef TSmartPointerT<tfx> TFxP;</tfx>

//===================================================================

class DVAPI TFx : public TSmartObject, public TPersist, public TParamObserver {

  DECLARE_CLASS_CODE

  TFxImp *m_imp;

public:

  typedef TFx *CreateProc();

  TFx();

  virtual ~TFx();

  virtual std::wstring getName() const;

  void setName(std::wstring name);

  std::wstring getFxId() const;

  void setFxId(std::wstring id);

  TParamContainer *getParams();

  const TParamContainer *getParams() const;

  void addParamVar(TParamVar *var);

  virtual TFx *clone(bool recursive = true) const;

  TFx *clone(TFx *fx, bool recursive) const;

  void unlinkParams();

  void linkParams(TFx *src);

  TFx *getLinkedFx() const;

  bool addInputPort(const std::string &name, TFxPort &p);  //!< Adds a port with

                                                           //! given name,

  //! returns false on

  //! duplicate names.

  //!  Ownership of the port belongs to derived implementations of TFx.

  bool addInputPort(const std::string &name, TFxPort *p,

                    int groupIndex);  //!< Adds a port with given name to the

                                      //! specified dynamic group,

  //!  returns false on duplicate names. Ownership is transferred to the group.

  bool removeInputPort(const std::string &name);  //!< Removes the port with

                                                  //! given name, returns false

  //! if not found.

  bool renamePort(const std::string &oldName, const std::string &newName);

  bool connect(

      const std::string &name,

      TFx *other);  //!< Equivalent to getInputPort(name)->setFx(other).

  bool disconnect(const std::string

                      &name);  //!< Equivalent to getInputPort(name)->setFx(0).

  int getInputPortCount() const;

  TFxPort *getInputPort(int index) const;

  TFxPort *getInputPort(const std::string &name) const;

  std::string getInputPortName(int index) const;

  virtual int dynamicPortGroupsCount() const { return 0; }

  virtual const TFxPortDG *dynamicPortGroup(int g) const { return 0; }

  bool hasDynamicPortGroups() const { return (dynamicPortGroupsCount() > 0); }

  void clearDynamicPortGroup(

      int g);  //!< \warning Users must ensure that the group's minimal

               //!  ports count is respected - this method does \b not.

  bool addOutputConnection(TFxPort *port);

  bool removeOutputConnection(TFxPort *port);

  static void listFxs(std::vector<tfxinfo> &fxInfos);</tfxinfo>

  static TFxInfo getFxInfo(const std::string &fxIdentifier);  //!< Returns info

                                                              //! associated to

  //! an fx

  //! identifier, or

  //! an

  //!  unnamed one if none was found.

  virtual bool isZerary() const { return getInputPortCount() == 0; }

  // returns the column index that provides reference frame for the FX.

  // (TColumnFx and Zerary fxs return their column indexes, n-ary FXs return

  // the reference column index of their first argument)

  // note: it returns -1 if the column is undefined (e.g. a n-ary FX with

  // arguments undefined yet)

  virtual int getReferenceColumnIndex() const;

  // se getXsheetPort() != 0 e la porta non e' connessa la si considera connessa

  // a tutte le colonne precedenti a quella corrente.

  // cfr. AddFx

  virtual TFxPort *getXsheetPort() const { return 0; }

  int getOutputConnectionCount() const;

  TFxPort *getOutputConnection(int i) const;

  virtual TFxTimeRegion getTimeRegion() const;

  void setActiveTimeRegion(const TFxTimeRegion &tr);

  TFxTimeRegion getActiveTimeRegion() const;

  virtual bool checkActiveTimeRegion() const { return true; }

  void disconnectAll();

  //! Returns a list of User Interface Concepts to be displayed when editing the

  //! fx parameters.

  //! \note Ownership of the returned array allocated with new[] is passed to

  //! callers.

  virtual void getParamUIs(TParamUIConcept *¶ms, int &length) {

    params = 0, length = 0;

  }

  inline std::string getFxType() const;

  virtual std::string getPluginId() const = 0;

  static TFx *create(std::string name);

  // TParamObserver-related methods

  void onChange(const TParamChange &c) override;

  void addObserver(TFxObserver *);

  void removeObserver(TFxObserver *);

  void notify(const TFxChange &change);

  void notify(const TFxPortAdded &change);

  void notify(const TFxPortRemoved &change);

  void notify(const TFxParamAdded &change);

  void notify(const TFxParamRemoved &change);

  void loadData(TIStream &is) override;

  void saveData(TOStream &os) override;

  void loadPreset(TIStream &is);  // solleva un eccezione se il preset non

                                  // corrisponde all'effetto

  void savePreset(TOStream &os);

  TFxAttributes *getAttributes() const;

  virtual std::string getAlias(double frame,

                               const TRenderSettings &info) const {

    return "";

  }

  //! Compatibility function - used to translate a port name from older Toonz

  //! versions into its current form.

  virtual void compatibilityTranslatePort(int majorVersion, int minorVersion,

                                          std::string &portName) {}

  /*-- Rendering（目玉）ボタンがOFFのときに使用されるInputPort --*/

  virtual int getPreferredInputPort() { return 0; }

  /* RasterFxPluginHost 用の仮想関数 */

  virtual void callStartRenderHandler() {}

  virtual void callEndRenderHandler() {}

  virtual void callStartRenderFrameHandler(const TRenderSettings *rs,

                                           double frame) {}

  virtual void callEndRenderFrameHandler(const TRenderSettings *rs,

                                         double frame) {}

public:

  // Id-related functions

  unsigned long getIdentifier() const;

  void setIdentifier(unsigned long id);

  void setNewIdentifier();

private:

  // not implemented

  TFx(const TFx &);

  TFx &operator=(const TFx &);

};

//===================================================================

DVAPI TIStream &operator>>(TIStream &in, TFxP &p);

//===================================================================

//===================================================================

class DVAPI TFxDeclaration : public TPersistDeclaration {

public:

  TFxDeclaration(const TFxInfo &info);

};

template <class t=""></class>

class TFxDeclarationT final : public TFxDeclaration {

public:

  TFxDeclarationT(const TFxInfo &info) : TFxDeclaration(info) {}

  TPersist *create() const override { return new T; }

};

//-------------------------------------------------------------------

inline std::string TFx::getFxType() const { return getDeclaration()->getId(); }

//-------------------------------------------------------------------

#define FX_DECLARATION(T)                                                      \

public:                                                                        \

  const TPersistDeclaration *getDeclaration() const override;

#define FX_IDENTIFIER(T, I)                                                    \

  namespace {                                                                  \

  TFxDeclarationT<t> info##T(TFxInfo(I, false));                               \</t>

  }                                                                            \

  const TPersistDeclaration *T::getDeclaration() const { return &info##T; }

#define FX_IDENTIFIER_IS_HIDDEN(T, I)                                          \

  namespace {                                                                  \

  TFxDeclarationT<t> info##T(TFxInfo(I, true));                                \</t>

  }                                                                            \

  const TPersistDeclaration *T::getDeclaration() const { return &info##T; }

//===================================================================

#endif