DiagramScene.h

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// SPDX-FileCopyrightText: Copyright (c) OpenGeoSys Community (opengeosys.org)
// SPDX-License-Identifier: BSD-3-Clause
 
#pragma once
 
#include "DiagramList.h"
#include "QArrow.h"
#include "QGraphicsGrid.h"
#include "Base/QNonScalableGraphicsTextItem.h"
#include <QGraphicsScene>
 
class QDateTime;

class DiagramScene : public QGraphicsScene
{
public:
    explicit DiagramScene(QObject* parent = nullptr);
    explicit DiagramScene(DiagramList* list, QObject* parent = nullptr);
    ~DiagramScene() override;
 
    QArrow* addArrow(qreal length, qreal angle, QPen& pen);
    void addGraph(DiagramList* list);
    QGraphicsGrid* addGrid(const QRectF &rect, int xTicks, int yTicks, const QPen &pen);
 
    static const int MARGIN = 30; 
 
private:
    void addCaption(const QString &name, QPen &pen);
    QNonScalableGraphicsTextItem* addNonScalableText(const QString &text,
                                                     const QFont &font = QFont());
    void adjustAxis(qreal& min, qreal& max, int& numberOfTicks);
    void adjustScaling();
    void clearGrid();
    void constructGrid();
    void drawGraph(DiagramList* list);
    int getXAxisOffset();
    int getYAxisOffset();
    void initialize();
    void setDiagramBoundaries(DiagramList* list);

    void setXAxis(QArrow* arrow) { _xAxis = arrow; }

    void setYAxis(QArrow* arrow) { _yAxis = arrow; }
 
    void update();
 
    QRectF _bounds;
    QRectF _unscaledBounds;
    QVector<DiagramList*> _lists;
    QVector<QGraphicsItemGroup*> _graphCaptions;
    QVector<QGraphicsPathItem*> _graphs;
    QGraphicsGrid* _grid;
    QDateTime _startDate;
    float _scaleX;
    float _scaleY;
    QArrow* _xAxis;
    QArrow* _yAxis;
    QNonScalableGraphicsTextItem* _xLabel;
    QNonScalableGraphicsTextItem* _yLabel;
    QNonScalableGraphicsTextItem* _xUnit;
    QNonScalableGraphicsTextItem* _yUnit;
    QVector<QNonScalableGraphicsTextItem*> _xTicksText;
    QVector<QNonScalableGraphicsTextItem*> _yTicksText;
};