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#pragma once
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#ifndef FUNCTIONTREEMODEL_H
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#define FUNCTIONTREEMODEL_H
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// TnzCore includes
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#include "tcommon.h"
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#include "tdoubleparam.h"
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// TnzQt includes
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#include "treemodel.h"
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// Qt includes
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#include <qscrollbar></qscrollbar>
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#undef DVAPI
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#undef DVVAR
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#ifdef TOONZQT_EXPORTS
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#define DVAPI DV_EXPORT_API
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#define DVVAR DV_EXPORT_VAR
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#else
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#define DVAPI DV_IMPORT_API
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#define DVVAR DV_IMPORT_VAR
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#endif
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//=================================================================
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//    Forward declarations
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class TStageObject;
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class TFx;
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class TDoubleParam;
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class TXsheet;
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class TParamContainer;
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class TFxHandle;
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class TObjectHandle;
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class FunctionTreeView;
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class FunctionViewer;
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//=================================================================
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//*****************************************************************************************
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//    FunctionTreeModel  declaration
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//*****************************************************************************************
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/*!
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  \brief    The Function Editor's (tree-like) \a model, as in the
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  model-view architecture.
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  \details  This class represents the data associated to Toonz's Function Editor
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  panels in a
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            view-independent way. The model's purpose is that of representing
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  all \a channels of the
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            objects in a scene. A \a channel is here intended as an
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  animatable parameter
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            represented by a single real-valued function.
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            Animatable objects are currently subdivided in two main types:
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  stage objects
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            (which consist roughly all the objects represented in the \a stage
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  schematic view,
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            including cameras, spline curves and pegbars), and \a fxs. Stage
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  objects typically
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            feature a uniform channels group structure, whereas each fx type
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  have a different set
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            of parameters (and thus channels). Recently, \a column objects can
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  sport an additional
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            group of channels, related to Plastic skeleton animations (see
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  TnzExt library).
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*/
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class FunctionTreeModel final : public TreeModel, public TParamObserver {
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  Q_OBJECT
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public:
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  /*!
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\brief    FunctionTreeModel's abstract base item class, adding the requirement
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to
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        return features visibility data.
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*/
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  class Item : public TreeModel::Item {
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  public:
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    Item() {}
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    virtual bool isActive() const   = 0;
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    virtual bool isAnimated() const = 0;
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  };
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  //----------------------------------------------------------------------------------
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  //! The model item representing a channels group.
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  class ChannelGroup : public Item {
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  public:
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    enum ShowFilter { ShowAllChannels, ShowAnimatedChannels };
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  private:
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    QString m_name;
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    ShowFilter m_showFilter;
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  public:
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    ChannelGroup(const QString &name = "");
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    ~ChannelGroup();
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    bool isActive() const override;
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    bool isAnimated() const override;
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    virtual QString getShortName() const { return m_name; }
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    virtual QString getLongName() const { return m_name; }
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    virtual QString getIdName() const;
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    void setShowFilter(ShowFilter showFilter);
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    ShowFilter getShowFilter() const { return m_showFilter; }
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    void applyShowFilter();  // call this method when a channel changes
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                             // its animation status
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    QVariant data(int role) const override;
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    // used in FunctionTreeView::onActivated
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    void setChildrenAllActive(bool active);
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    void displayAnimatedChannels();
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  };
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  //----------------------------------------------------------------------------------
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  /*!
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\brief    The common class representing a \a parameter in the model.
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\remark   This class's concept is different from that of a Channel, as a \a
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parameter could
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        be composed of multiple channels, e.g. like an animated \p RGBA
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color, which
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        has 4 channels.
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*/
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  class ParamWrapper {
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  protected:
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    TParamP m_param;      //!< The wrapped parameter.
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    std::wstring m_fxId;  //!< Fx identifier for m_param's owner, if any.
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  public:
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    ParamWrapper(const TParamP ¶m, const std::wstring &fxId)
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        : m_param(param), m_fxId(fxId) {}
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    virtual ~ParamWrapper() {}
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    const std::wstring &getFxId() const { return m_fxId; }
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    TParamP getParam() const { return m_param; }
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    virtual void setParam(const TParamP ¶m) { m_param = param; }
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  };
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  //----------------------------------------------------------------------------------
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  //! The model item representing a channel (i.e. a real-valued function).
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  class Channel final : public ParamWrapper,
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                        public Item,
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                        public TParamObserver {
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    FunctionTreeModel *m_model;  //!< (\p not \p owned) Reference to the model
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    ChannelGroup
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        *m_group;  //!< (\p not \p owned) Reference to the enclosing group
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    std::string m_paramNamePref;
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    bool m_isActive;  //!< Whether the channels is active, ie visible
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                      //!< as a curve and numeric column
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  public:
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    Channel(FunctionTreeModel *model, TDoubleParam *param,
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            std::string paramNamePrefix = "", std::wstring fxId = L"");
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    ~Channel();
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    TDoubleParam *getParam() const {
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      return (TDoubleParam *)m_param.getPointer();
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    }
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    void setParam(const TParamP ¶m) override;
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    QString getShortName() const;
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    QString getLongName() const;
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    // in order to show the expression name in the tooltip
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    QString getExprRefName() const;
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    ChannelGroup *getChannelGroup() const { return m_group; }
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    void setChannelGroup(ChannelGroup *group) { m_group = group; }
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    QVariant data(int role) const override;
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    bool isActive() const override { return m_isActive; }
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    void setIsActive(bool active);
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    bool isAnimated() const override;
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    bool isCurrent() const;
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    void setIsCurrent(bool current);
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    bool isHidden() const;  // the channel is hidden if it is filtered out
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                            // by its channelgroup
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    void onChange(const TParamChange &) override;
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    void *getInternalPointer() const override;
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  };
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private:
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  ChannelGroup
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      *m_stageObjects,  //!< Predefined group for stage object channels.
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      *m_fxs;           //!< Predefined group for fx parameters.
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  std::vector<channel *=""> m_activeChannels;</channel>
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  Channel *m_currentChannel;  //!< (\p not \p owned) Current channel.
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  TStageObject
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      *m_currentStageObject;  //!< (\p not \p owned) Current stage object.
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  TFx *m_currentFx;           //!< (\p not \p owned) Current fx.
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  bool m_paramsChanged;
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  TFxHandle *m_fxHandle;
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  TObjectHandle *m_objectHandle;
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public:
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  FunctionTreeModel(
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      FunctionTreeView *parent = 0);  // BUT! Should be view-independent! :o
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  ~FunctionTreeModel();
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  Channel *getCurrentChannel() const { return m_currentChannel; }
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  Channel *getActiveChannel(int index) const;
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  int getActiveChannelCount() const { return m_activeChannels.size(); }
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  int getColumnIndexByCurve(TDoubleParam *param) const;
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  double getValue(Channel *channel, double frame) const;
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  int getClosestKeyframe(Channel *channel,
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                         double frame) const;  // -1 if not found
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  Channel *getClosestChannel(double frame, double value) const;
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  void refreshActiveChannels();
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  void refreshData(
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      TXsheet *xsh);  // call this method when the stageObject/Fx structure
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                      // has been modified
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  void resetAll();
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  void applyShowFilters();
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  void setCurrentStageObject(TStageObject *obj) { m_currentStageObject = obj; }
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  TStageObject *getCurrentStageObject() const { return m_currentStageObject; }
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  void setCurrentFx(TFx *fx);
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  TFx *getCurrentFx() const { return m_currentFx; }
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  void addParameter(
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      TParam *parameter,
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      const TFilePath
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          &folder);  //!< See function FunctionViewer::addParameter().
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  TFxHandle *getFxHandle() { return m_fxHandle; }
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  void setFxHandle(TFxHandle *fxHandle) { m_fxHandle = fxHandle; }
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  TObjectHandle *getObjectHandle() { return m_objectHandle; }
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  void setObjectHandle(TObjectHandle *objectHandle) {
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    m_objectHandle = objectHandle;
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  }
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signals:
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  void activeChannelsChanged();
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  void curveSelected(TDoubleParam *);
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  void curveChanged(bool isDragging);
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  void currentChannelChanged(FunctionTreeModel::Channel *);
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private:
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  void addParameter(ChannelGroup *group, const std::string &prefixString,
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                    const std::wstring &fxId, TParam *param);
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  //! remove channel from m_activeChannels and m_currentChannel
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  void onChannelDestroyed(Channel *channel);
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  //! called when channel status (active/current) has been modified
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  void emitDataChanged(Channel *channel) {
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    QModelIndex index = channel->createIndex();
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    emit dataChanged(index, index);
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    emit activeChannelsChanged();
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  }
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  void emitCurveSelected(TDoubleParam *curve) { emit curveSelected(curve); }
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  void emitCurrentChannelChanged(FunctionTreeModel::Channel *channel) {
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    emit currentChannelChanged(channel);
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  }
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  void addChannels(TFx *fx, ChannelGroup *fxItem, TParamContainer *params);
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  // Observers notification functions
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  void onChange(
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      const TParamChange &) override;   // Multiple param notifications ...
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  void onParamChange(bool isDragging);  // ... that get compressed into one
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  // Update functions
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  void refreshStageObjects(TXsheet *xsh);
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  void refreshFxs(TXsheet *xsh);
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  void refreshPlasticDeformations();
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  void addActiveChannels(TreeModel::Item *item);
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public:
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  ChannelGroup *getStageObjectChannel(int index) const;
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  ChannelGroup *getFxChannel(int index) const;
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  int getStageObjectsChannelCount() const {
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    return m_stageObjects->getChildCount();
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  }
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  int getFxsChannelCount() const { return m_fxs->getChildCount(); }
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};
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//=============================================================================
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class FxChannelGroup final : public FunctionTreeModel::ChannelGroup {
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public:
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  TFx *m_fx;
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public:
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  FxChannelGroup(TFx *fx);
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  ~FxChannelGroup();
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  QString getShortName() const override;
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  QString getLongName() const override;
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  QString getIdName() const override;
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  void *getInternalPointer() const override {
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    return static_cast<void *="">(m_fx);</void>
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  }
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  TFx *getFx() const { return m_fx; }
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  QVariant data(int role) const override;
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  void refresh() override;
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};
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//*****************************************************************************************
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//    FunctionTreeView  declaration
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//*****************************************************************************************
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//! TreeView with stage object and fx channels. controls channel visibility and
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//! current channel
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class FunctionTreeView final : public TreeView {
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  Q_OBJECT
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  TFilePath m_scenePath;
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  FunctionTreeModel::Channel *m_clickedItem;
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  FunctionTreeModel::Channel *m_draggingChannel;
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  QPoint m_dragStartPosition;
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  //---
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  // set color by using style sheet
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  QColor m_textColor;         // text color (black)
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  QColor m_currentTextColor;  // current item text color (red)
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  Q_PROPERTY(QColor TextColor READ getTextColor WRITE setTextColor)
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  Q_PROPERTY(QColor CurrentTextColor READ getCurrentTextColor WRITE
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                 setCurrentTextColor)
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public:
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  FunctionTreeView(FunctionViewer *parent);
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  void setCurrentScenePath(TFilePath scenePath) { m_scenePath = scenePath; }
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  void openContextMenu(TreeModel::Item *item, const QPoint &globalPos) override;
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  void setTextColor(const QColor &color) { m_textColor = color; }
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  QColor getTextColor() const { return m_textColor; }
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  void setCurrentTextColor(const QColor &color) { m_currentTextColor = color; }
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  QColor getCurrentTextColor() const { return m_currentTextColor; }
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protected:
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  void onClick(TreeModel::Item *item, const QPoint &itemPos,
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               QMouseEvent *e) override;
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  void onMidClick(TreeModel::Item *item, const QPoint &itemPos,
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                  QMouseEvent *e) override;
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  void onDrag(TreeModel::Item *item, const QPoint &itemPos,
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              QMouseEvent *e) override;
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  void onRelease() override;
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  void openContextMenu(FunctionTreeModel::Channel *channel,
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                       const QPoint &globalPos);
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  void openContextMenu(FunctionTreeModel::ChannelGroup *group,
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                       const QPoint &globalPos);
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public slots:
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  void onActivated(const QModelIndex &index);
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  void updateAll();
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  // show all the animated channels when the scene switched
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  void displayAnimatedChannels();
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Toshihiro Shimizu 890ddd
signals:
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  void switchCurrentObject(TStageObject *obj);
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  void switchCurrentFx(TFx *fx);
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};
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#endif  // FUNCTIONTREEMODEL_H