sceneElement.hh

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/*===========================================================================*\
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*   $Revision$                                                       *
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\*===========================================================================*/

#ifndef VSI_SCENEELEMENT_HH
#define VSI_SCENEELEMENT_HH

//== INCLUDES =================================================================
#include <QGraphicsWidget>
#include <QString>
#include <QDomDocument>
#include <QDomElement>
#include <QXmlQuery>

//== FORWARDDECLARATIONS ======================================================
class QGraphicsLinearLayout;

//== NAMESPACES ===============================================================
namespace VSI {

//== FORWARDDECLARATIONS ======================================================
class GraphicsScene;
class ElementInput;
class ElementOutput;
class ElementFunction;

class Element;
class Text;

//== CLASS DEFINITION =========================================================

class SceneElement : public QGraphicsWidget
{
  Q_OBJECT

  public:
    SceneElement (GraphicsScene *_scene, Element *_element);

    ~SceneElement ();

    void paint (QPainter *_painter, const QStyleOptionGraphicsItem *_option, QWidget *_widget = 0);

    Element *element () const { return element_; };

    QVector<ElementInput *> inputs () { return inputs_; };

    QVector<ElementOutput *> outputs () { return outputs_; };

    QVector<ElementFunction *> functions () { return functions_; };

    ElementInput *dataIn () { return dataIn_; };

    ElementOutput *dataOut () { return dataOut_; };

    void resetCodeGeneration ();

    void replaceCodeBlock (QString _name, QString _id, QString _value);

    QString variableId ();

    int id () { return id_; };

    QString code () { return code_; };

    bool isBefore (SceneElement *_e);

    bool isAfter (SceneElement *_e);

    void saveToXml (QDomDocument &_doc, QDomElement &_root);

    void loadFromXml (QXmlQuery &_xml);

    GraphicsScene *graphicsScene () { return scene_; };

  protected:

    // mouse handling for draging
    void mousePressEvent (QGraphicsSceneMouseEvent *_event);
    void mouseMoveEvent (QGraphicsSceneMouseEvent *_event);
    void mouseReleaseEvent (QGraphicsSceneMouseEvent *_event);
    void mouseDoubleClickEvent (QGraphicsSceneMouseEvent *_event);

    // handle movement
    void moveEvent (QGraphicsSceneMoveEvent *_event);

  private slots:

    // show input configuration dialog
    void showInputConfig ();

  private:

    // invalidate (reset) all connections of this element
    void invalidateConnections ();

  private:

    GraphicsScene *scene_;
    Element *element_;

    QVector<ElementInput *> inputs_;
    QVector<ElementOutput *> outputs_;

    ElementInput *dataIn_;
    ElementOutput *dataOut_;

    QVector<ElementFunction *> functions_;

    QVector<ElementInput *> configInputs_;

    QString code_;

    int id_;

    Text *name_;
    Text *elementName_;
    QGraphicsLinearLayout *nameLayout_;
};

//=============================================================================
}
//=============================================================================

#endif