plotaxes.h

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#ifndef UPDRAFT_SRC_PLUGINS_IGCVIEWER_PLOTAXES_H_
#define UPDRAFT_SRC_PLUGINS_IGCVIEWER_PLOTAXES_H_

#include <QPoint>
#include <QPainter>
#include <QLayoutItem>
#include <QLinkedList>

#include "util/util.h"

namespace Updraft {
namespace IgcViewer {

class PlotAxes : public QObject, public QLayoutItem {
  Q_OBJECT

 public:
  Qt::Orientations expandingDirections() const;
  bool isEmpty() const;
  QRect geometry() const;
  QSize maximumSize() const;
  QSize minimumSize() const;
  QSize sizeHint() const;
  void setGeometry(const QRect& rect);

  explicit PlotAxes(bool drawTimeTicks = true, bool drawAxisX = true);

  qreal placeX(qreal x);

  qreal getInverseX(qreal x);

  qreal placeY(qreal y);

  qreal getInverseY(qreal y);

  void setLimits(qreal min, qreal max, qreal minTime, qreal maxTime);

  void draw(QPainter *painter);

  qreal getBase();

  qreal getStep();

  qreal getFirst();

  int getTimeInterval();

  qreal getStartTimeTick();

  int getVerticalTicks();

  int getFirstHour();

  int getLastHour();

 signals:
  void geometryChanged();

 private:
  void emitGeometryChanged();

  qreal findTickIncrement(qreal range, qreal width, qreal minTickSpacing);

  qreal findTimeTickIncrement(qreal range, qreal width, qreal minTickSpacing);

  Util::LinearFunc linX, linY;

  Util::LinearFunc tickX, tickY;
  int tickCountX, tickCountY;

  QRect rect;
  qreal min, max, maxTime, minTime;

  bool drawTimeTicks;

  bool drawAxisX;

  qreal base;

  qreal step;

  qreal first;

  int timeInterval;

  int startTimeTick;

  int firstHour, lastHour;

  static const int TICK_SPACING_X = 10;
  static const int TICK_SPACING_Y = 10;
  static const int TIME_TICK_HEIGHT = 10;

  static const QPen AXES_PEN;
  static const QPen TICKS_PEN;
  static const QPen TIME_TICKS_PEN;

  QVector<int> timeIntervalValues;
};

}  // End namespace Updraft
}  // End namespace IgcViewer

#endif  // UPDRAFT_SRC_PLUGINS_IGCVIEWER_PLOTAXES_H_