mapview.h

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#ifndef MAPVIEW_H
#define MAPVIEW_H

#define MAP_BUFFER 5 //Tiles kept around the map for the purpose of scrolling.

#include "array2d.h"
#include "mapcell.h"
#include "tilemap.h"
#include "tilemappreviewgraphicsitem.h"

#include <QObject>
#include <QGraphicsView>
#include <QKeyEvent>
#include <QResizeEvent>

class MapView : public QGraphicsView
{
    Q_OBJECT

public:
    MapView(QWidget *parent);
    ~MapView();

    void clear();
    void setMap(TileMap *tileMap);

    void setViewMode(int viewMode);

    TileMapPreviewGraphicsItem *previewItem() { return mPreviewItem; }

    QRectF tilesInFrame() const;

private slots:
    void mapSizeChanged();

protected:
    void wheelEvent(QWheelEvent *event) override;
    void mouseMoveEvent(QMouseEvent *event) override;
    void mousePressEvent(QMouseEvent *event) override;
    void mouseReleaseEvent(QMouseEvent *event) override;

    void resizeEvent(QResizeEvent *) override;

signals:
    void cellActivated(int x, int y, QMouseEvent *event);

    void cellClicked(int x, int y, QMouseEvent *event);

    void cellReleased(int x, int y, QMouseEvent *event);


    void cellHovered(int x, int y, QMouseEvent *event);


    void mouseExitedMap(QMouseEvent *event);

    void mapViewChanged(QRectF rect);

private:
    void reMakeMap();

    float mScale;
    int mOldX;
    int mOldY;

    const TileMap *mTileMap;

    Array2D<MapCell *> mMapCells;
    int mViewMode;

    QGraphicsRectItem *mMouseHoverRect;

    //this owns mPreviewItem
    TileMapPreviewGraphicsItem *const mPreviewItem;

    QPoint mPreMousePoint;
};

#endif // MAPVIEW_H