#pragma once

#ifndef SCHEMATICNODE_H

#define SCHEMATICNODE_H

#include <qgraphicsitem></qgraphicsitem>

#include "schematicviewer.h"

// forward declarations

class SchematicPort;

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

//

//  StageSchematicName.

//

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

class SchematicName final : public QGraphicsTextItem {

  Q_OBJECT

  double m_width;

  double m_height;

public:

  SchematicName(QGraphicsItem *parent, double width, double height);

  ~SchematicName();

  bool eventFilter(QObject *object, QEvent *event) override;

  void setName(const QString &name);

protected:

  void focusInEvent(QFocusEvent *fe) override;

  void focusOutEvent(QFocusEvent *fe) override;

  void keyPressEvent(QKeyEvent *ke) override;

signals:

  void focusOut();

protected slots:

  void onContentsChanged();

};

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

//

// SchematicThumbnailToggle

//

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

class SchematicThumbnailToggle final : public QObject, public QGraphicsItem {

  Q_OBJECT

#ifndef MACOSX

  Q_INTERFACES(QGraphicsItem)

#endif

  bool m_isDown;

public:

  SchematicThumbnailToggle(SchematicNode *parent, bool isOpened);

  ~SchematicThumbnailToggle();

  QRectF boundingRect() const override;

  void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,

             QWidget *widget = 0) override;

  void setIsDown(bool value);

protected:

  void mousePressEvent(QGraphicsSceneMouseEvent *me) override;

signals:

  void toggled(bool isOpened);

};

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

//

// SchematicToggle

//

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

class SchematicToggle : public QObject, public QGraphicsItem {

  Q_OBJECT

#ifndef MACOSX

  Q_INTERFACES(QGraphicsItem)

#endif

protected:

  QIcon m_imageOn, m_imageOn2, m_imageOff;

  QColor m_colorOn, m_colorOff;

  int m_state;

  int m_flags;

  int m_width, m_height;

public:

  enum { eIsParentColumn = 0x01, eEnableNullState = 0x02 };

  SchematicToggle(SchematicNode *parent, const QIcon &imageOn, QColor colorOn,

                  int flags, bool isNormalIconView = true);

  SchematicToggle(SchematicNode *parent, const QIcon &imageOn, QColor colorOn,

                  const QIcon &imageOff, QColor colorOff, int flags,

                  bool isNormalIconView = true);

  //! the schematic toggle can be a 3-state or a 2-state toggle!

  SchematicToggle(SchematicNode *parent, const QIcon &imageOn,

                  const QIcon &imageOn2, QColor colorOn, int flags,

                  bool isNormalIconView = true);

  SchematicToggle(SchematicNode *parent, const QIcon &imageOn,

                  const QIcon &imageOn2, QColor colorOn, const QIcon &imageOff,

                  QColor colorOff, int flags, bool isNormalIconView = true);

  ~SchematicToggle();

  QRectF boundingRect() const override;

  // reimplemeted in SchematicToggle_SplineOptions

  void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,

             QWidget *widget = 0) override;

  //! this is used for a 2-state toggle;

  void setIsActive(bool value) { m_state = value ? 1 : 0; }

  //! this is used for a 3-state toggle;

  void setState(int state) { m_state = state; }

  void setSize(int width, int height) {

    m_width  = width;

    m_height = height;

    update();

  }

protected:

  // reimplemeted in SchematicToggle_SplineOptions

  void mousePressEvent(QGraphicsSceneMouseEvent *me) override;

  void contextMenuEvent(QGraphicsSceneContextMenuEvent *cme) override;

signals:

  //! this is triggered for a 2-state toggle;

  void toggled(bool isChecked);

  //! this is triggered for a 3-state toggle;

  void stateChanged(int state);

};

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

class SchematicToggle_SplineOptions final : public SchematicToggle {

  Q_OBJECT

public:

  SchematicToggle_SplineOptions(SchematicNode *parent, const QPixmap &pixmap,

                                int flags)

      : SchematicToggle(parent, QIcon(pixmap), QColor(0, 0, 0, 0), flags) {}

  SchematicToggle_SplineOptions(SchematicNode *parent, const QPixmap &pixmap1,

                                const QPixmap &pixmap2, int flags)

      : SchematicToggle(parent, QIcon(pixmap1), QIcon(pixmap2),

                        QColor(0, 0, 0, 0), flags) {}

  void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,

             QWidget *widget = 0) override;

protected:

  void mousePressEvent(QGraphicsSceneMouseEvent *me) override;

};

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

//

// SchematicHandleSpinBox

//

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

class SchematicHandleSpinBox : public QObject, public QGraphicsItem {

  Q_OBJECT

#ifndef MACOSX

  Q_INTERFACES(QGraphicsItem)

#endif

protected:

  Qt::MouseButton m_buttonState;

  int m_delta;

  QPixmap m_pixmap;

public:

  SchematicHandleSpinBox(QGraphicsItem *parent);

  ~SchematicHandleSpinBox();

  QRectF boundingRect() const override;

  void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,

             QWidget *widget = 0) override;

signals:

  void modifyHandle(int);

  void changeStatus();

  void sceneChanged();

  void handleReleased();

protected:

  void mouseMoveEvent(QGraphicsSceneMouseEvent *me) override;

  void mousePressEvent(QGraphicsSceneMouseEvent *me) override;

  void mouseReleaseEvent(QGraphicsSceneMouseEvent *me) override;

};

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

//

// class SchematicLink

//

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

/*!

        \brief The class provides method to draw links between two SchematicPort

        A link can has a cubic shape or a line shape and is drawing calling the

   updatePath() method. The class also provides

        methods to retrieve the start SchematicPort and the end SchematicPort of

   the link and a method to remove the

        link from these two SchematicPort.

        \see SchematicPort, SchematicNode.

*/

class SchematicLink : public QObject, public QGraphicsItem {

  Q_OBJECT

  SchematicPort *m_startPort, *m_endPort;

  QPainterPath m_path, m_hitPath;

  bool m_lineShaped;

  bool m_highlighted;

public:

  SchematicLink(QGraphicsItem *parent, QGraphicsScene *scene);

  ~SchematicLink();

  //! Reimplements the pure virtual QGraphicsItem::boundingRect() method.

  QRectF boundingRect() const override;

  //! Reimplements the virtual QGraphicsItem::shape() method.

  QPainterPath shape() const override;

  //! Reimplements the pure virtual QGraphicsItem::paint() method.

  void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,

             QWidget *widget = 0) override;

  /*! Update the link path.\n

    The link is has a cubic shape starting from \b startPos and ending to \b

    endPos.

    If a link path  already exists, the path is updating otherwise a path is

    created.*/

  void updatePath(const QPointF &startPos, const QPointF &endPos);

  //! Update the link path.\n

  //! Call the updatePath(const QPointF &startPos, const QPointF &endPos)

  //! method. The \b start pos and the \b endPos

  //! are taken from the the given \b startPort and \b endPort.

  void updatePath(SchematicPort *startPort, SchematicPort *endPort);

  void updatePath() { updatePath(m_startPort, m_endPort); }

  void updateEndPos(const QPointF &endPos);

  //! Sets the start SchematicPort of the link to \b startPort.

  void setStartPort(SchematicPort *startPort) { m_startPort = startPort; }

  //! Sets the start SchematicPort of the link to \b startPort.

  void setEndPort(SchematicPort *endPort) { m_endPort = endPort; }

  //! Returns the start SchematicPort of the link.

  SchematicPort *getStartPort() const { return m_startPort; }

  //! Returns the end SchematicPort of the link.

  SchematicPort *getEndPort() const { return m_endPort; }

  /*! Returns the other SchematicPort linked to the specified \b port.\n

    Returns 0 if \b port isn't neither the start SchematicPort eihter the end

    SchematicPort of this link.*/

  SchematicPort *getOtherPort(const SchematicPort *port) const;

  /*! Returns the other SchematicNode linked to the specified \b node.\n

    Returns 0 if \b node isn't neither the parent node of the start

    SchematicPort

    eihter the parent node of the end SchematicPort of the link.*/

  SchematicNode *getOtherNode(const SchematicNode *node) const;

  //! Returns true if the link is line shaped.

  bool isLineShaped() { return m_lineShaped; }

  void setLineShaped(bool value) { m_lineShaped = value; }

  bool isHighlighted() { return m_highlighted; }

  void setHighlighted(bool value) { m_highlighted = value; }

protected:

  void mousePressEvent(QGraphicsSceneMouseEvent *me) override;

  void mouseReleaseEvent(QGraphicsSceneMouseEvent *me) override;

};

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

//

// class SchematicPort

//

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

/*!

        \brief The class provides method to draw and andle a SchematicPort.

        A SchematicPort is a child af a SchematicNode and is used to link a

  parent node to other nodes. It can be an input port,

        or better , a port used to accept link coming from other node. A port

  that isn't an input port cannot accept

        links but can begin to draw links.\n

  A SchematicPort has got a hook thet is a position where links starts or

  ends.\n

        A SchematicPort can be linked to an arbitriary number of links.

        A SchematicPort handles a container of all links to retrieve all linked

  node; each link is indexed using a

        progressive number assigned when the link is inserted to the container.

        \see SchematicNode, SchematicLink.

*/

class SchematicPort : public QObject, public QGraphicsItem {

  Q_OBJECT

#ifndef MACOSX

  Q_INTERFACES(QGraphicsItem)

#endif

protected:

  Qt::MouseButton m_buttonState;

  SchematicNode *m_node;

  QPointF m_hook;

  bool m_highlighted;

  QList<schematiclink *=""> m_ghostLinks;</schematiclink>

  SchematicPort *m_linkingTo;

  QList<schematiclink *=""> m_links;</schematiclink>

  int m_type;

public:

  SchematicPort(QGraphicsItem *parent, SchematicNode *node, int type);

  ~SchematicPort();

  SchematicNode *getNode() const { return m_node; }

  QRectF boundingRect() const override { return QRectF(0, 0, 1, 1); };

  void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,

             QWidget *widget = 0) override{};

  //! Add the \b link to the links container.

  void addLink(SchematicLink *link) { m_links.push_back(link); }

  //! Returns the number of the link contained in the links container or, it is

  //! the same, the number of nodes

  //! linked to this SchematicPort

  int getLinkCount() const { return m_links.size(); }

  //! Removes the link form the links container.\n

  //! It doesn't remove the link from the scene and it doesn't delete the link!

  void removeLink(SchematicLink *link);

  //! Removes \b link from the scene and the m_links list; delete it .

  void eraseLink(SchematicLink *link);

  //! Removes all links from the scene and the m_links list; delete them .

  void eraseAllLinks();

  //! Returns the link indexed with \b index.\n

  //!\note A link is indexed with a progressive number when is inserted in the

  //! container.

  SchematicLink *getLink(int index) const {

    return (index < m_links.size() && index >= 0) ? m_links[index] : 0;

  }

  //! Returns the node linked with the link \b index.

  SchematicNode *getLinkedNode(int index) const {

    return m_links[index] ? m_links[index]->getOtherNode(m_node) : 0;

  }

  //! Make a link from this port to the given port.

  virtual SchematicLink *makeLink(SchematicPort *port);

  //! Check and make a connection between the data Objects.

  //! Returns true if it is possible to have a connection between the data

  //! Object represented by this SchematicPort

  //! and that represented by \b port. If check only is false no connections is

  //! created!

  //! \see TFxPort, TStageObject.

  virtual bool linkTo(SchematicPort *port, bool checkOnly = false) = 0;

  // !Return the hook poeistion of the port.

  QPointF getHook() const { return m_hook; }

  //! Returns true if this SchematicPort is linked to \b port. Otherwise returns

  //! false.

  bool isLinkedTo(SchematicPort *port) const;

  void highLight(bool value) { m_highlighted = value; }

  bool isHighlighted() const { return m_highlighted; }

  //! Updates all links of the ports.

  void updateLinksGeometry();

  //! Returns the scene position of the link end

  QPointF getLinkEndPoint() const;

  //! Returns the type of the port. \see eFxSchematicPortType,

  //! eStageSchematicPortType

  int getType() const { return m_type; }

  //! Set the type of the port.

  void setType(int type) { m_type = type; }

protected:

  void mouseMoveEvent(QGraphicsSceneMouseEvent *me) override;

  void mousePressEvent(QGraphicsSceneMouseEvent *me) override;

  void mouseReleaseEvent(QGraphicsSceneMouseEvent *me) override;

private:

  virtual SchematicPort *searchPort(const QPointF &scenePos) = 0;

  // linkingPort is used only for stage schematic port -

  // in order to enable to connect from multiple node at the same time.

  virtual void hideSnappedLinks(SchematicPort *linkingPort) = 0;

  virtual void showSnappedLinks(SchematicPort *linkingPort) = 0;

signals:

  void isClicked();

  void isReleased(const QPointF &);

  void sceneChanged();

  void xsheetChanged();

};

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

//

// class SchematicNode

//

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

class SchematicNode : public QObject, public QGraphicsItem {

  Q_OBJECT

#ifndef MACOSX

  Q_INTERFACES(QGraphicsItem)

#endif

protected:

  SchematicScene *m_scene;

  qreal m_width, m_height;

  Qt::MouseButton m_buttonState;

  QMap<int, *="" schematicport=""> m_ports;</int,>

public:

  SchematicNode(SchematicScene *scene);

  ~SchematicNode();

  QRectF boundingRect() const override;

  void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,

             QWidget *widget = 0) override;

  SchematicPort *addPort(int portId, SchematicPort *port);

  void erasePort(int portId);

  SchematicPort *getPort(int portId) const;

  QList<schematicnode *=""> getLinkedNodes(int portId) const;</schematicnode>

  virtual void setSchematicNodePos(const QPointF &pos) const = 0;

  virtual void setPosition(const QPointF &newPos)            = 0;

  void updateLinksGeometry();

  virtual void onClicked(){};

protected:

  void mouseMoveEvent(QGraphicsSceneMouseEvent *me) override;

  void mousePressEvent(QGraphicsSceneMouseEvent *me) override;

  void mouseReleaseEvent(QGraphicsSceneMouseEvent *me) override;

signals:

  void sceneChanged();

  void xsheetChanged();

  void nodeChangedSize();

};

#endif  // SCHEMATICNODE_H