gobject.h

#ifndef GOBJECT_H
#define GOBJECT_H

#include "model/object.h"
#include "model/line.h"
#include "ui/sheetscene.h"

#include <QGraphicsItem>
#include <QGraphicsRectItem>
#include <QPen>
#include <QBrush>
#include <QPainter>
#include <QStyleOptionGraphicsItem>

class GObjectHandle;
class GCompositeObject;

class GObject : public QGraphicsObject
{
public:
    // CONSTRUCTORS
    explicit GObject(Object *obj);
    virtual ~GObject();

    // GETTERS
    virtual Object *get();
    virtual const Object *get() const;
    Entity *getModelParent() const;
    bool isHovered() const;
    GObject *getOldestParent();
    SheetScene *getSheetScene() const;

    // SETTERS
    virtual void setCosmetic(bool cosmetic);

    // OBJECT EDITING
    virtual void reloadFromModel();
    virtual void applyToModel();
    virtual void showHandles(bool show = true);
    virtual void handleChanged(GObjectHandle *handle);

    // STATIC
    static GObject *assign(Object *obj);

    // EVENTS
    void hoverEnterEvent(QGraphicsSceneHoverEvent *event) override;
    void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override;
protected:
    void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
    void keyPressEvent(QKeyEvent *event) override;
    QVariant itemChange(GraphicsItemChange change, const QVariant &value)
        override;

public:
    // OVERRIDE QGraphicsItem
    QRectF boundingRect() const override;
    void paint(QPainter*, const QStyleOptionGraphicsItem*, QWidget*) override;
    GCompositeObject *parentItem() const;
private:
    // HELPER METHODS
    void moveHandlesAbove();

protected:
    // ATTRIBUTES
    Object *obj;
    QList<GObjectHandle*> *handles{};
    // TODO Squeeze into one flag variable
    bool cosmetic = false;
    bool hovered = false;

    // FRIENDS
    friend class GObjectHandle;
};

class GObjectHandle : public QGraphicsRectItem
{
public:
    explicit GObjectHandle(GObject *obj);

    SheetScene *scene();

protected:
    // EVENTS
    QVariant itemChange(QGraphicsItem::GraphicsItemChange change,
            const QVariant &value) override;
    void mousePressEvent(QGraphicsSceneMouseEvent *event) override;
    void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;

private:
    // ATTRIBUTES
    GObject *obj;
    QPointF _dragStartPos;
};

#endif // GOBJECT_H