1 files changed, 50 insertions, 0 deletions
diff --git a/app/qcheapruler.hpp b/app/qcheapruler.hpp
new file mode 100644
index 0000000..4510315
--- /dev/null
+++ b/app/qcheapruler.hpp
@@ -0,0 +1,50 @@
+#pragma once
+
+#include <QGeoCoordinate>
+#include <QJSValue>
+#include <QObject>
+
+#include <mapbox/cheap_ruler.hpp>
+
+namespace cr = mapbox::cheap_ruler;
+
+class QCheapRuler : public QObject {
+    Q_OBJECT
+    Q_PROPERTY(double distance READ distance NOTIFY distanceChanged)
+    Q_PROPERTY(double currentDistance READ currentDistance WRITE setCurrentDistance NOTIFY currentDistanceChanged)
+    Q_PROPERTY(unsigned segmentIndex READ segmentIndex NOTIFY segmentIndexChanged)
+    Q_PROPERTY(QGeoCoordinate currentPosition READ currentPosition NOTIFY currentPositionChanged)
+    Q_PROPERTY(QJSValue path READ path WRITE setPath NOTIFY pathChanged)
+
+public:
+    QCheapRuler() = default;
+
+    double distance() const;
+
+    double currentDistance() const;
+    void setCurrentDistance(double);
+
+    unsigned segmentIndex() const;
+
+    QGeoCoordinate currentPosition() const;
+
+    QJSValue path() const;
+    void setPath(const QJSValue &value);
+
+signals:
+    void distanceChanged();
+    void currentDistanceChanged();
+    void currentPositionChanged();
+    void segmentIndexChanged();
+    void pathChanged();
+
+private:
+    cr::CheapRuler ruler() const;
+
+    double m_distance = 0.;
+    double m_currentDistance = 0.;
+    QGeoCoordinate m_currentPosition = QGeoCoordinate(0., 0.);
+    unsigned m_segmentIndex = 0;
+
+    cr::line_string m_path;
+};