[Measure] Add features, viewproviders and preferences for unified measurement facility

src/Mod/Measure/App/MeasurePosition.h

@@ -0,0 +1,82 @@
+/***************************************************************************
+ *   Copyright (c) 2023 David Friedli <david[at]friedli-be.ch>             *
+ *                                                                         *
+ *   This file is part of FreeCAD.                                         *
+ *                                                                         *
+ *   FreeCAD is free software: you can redistribute it and/or modify it    *
+ *   under the terms of the GNU Lesser General Public License as           *
+ *   published by the Free Software Foundation, either version 2.1 of the  *
+ *   License, or (at your option) any later version.                       *
+ *                                                                         *
+ *   FreeCAD is distributed in the hope that it will be useful, but        *
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of            *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      *
+ *   Lesser General Public License for more details.                       *
+ *                                                                         *
+ *   You should have received a copy of the GNU Lesser General Public      *
+ *   License along with FreeCAD. If not, see                               *
+ *   <https://www.gnu.org/licenses/>.                                      *
+ *                                                                         *
+ **************************************************************************/
+
+
+#ifndef APP_MEASUREPOSITION_H
+#define APP_MEASUREPOSITION_H
+
+#include <Mod/Measure/MeasureGlobal.h>
+
+#include <QTextStream>
+
+#include <App/DocumentObject.h>
+#include <App/PropertyGeo.h>
+#include <App/PropertyUnits.h>
+
+#include <Mod/Part/App/MeasureInfo.h>
+
+#include "MeasureBase.h"
+
+
+namespace Measure
+{
+
+
+class MeasureExport MeasurePosition : public Measure::MeasureBaseExtendable<Part::MeasurePositionInfo>
+{
+    PROPERTY_HEADER_WITH_OVERRIDE(Measure::MeasurePosition);
+
+public:
+    /// Constructor
+    MeasurePosition();
+    ~MeasurePosition() override;
+
+    App::PropertyLinkSub Element;
+    App::PropertyPosition Position;
+
+    App::DocumentObjectExecReturn *execute() override;
+    void recalculatePosition();
+
+    const char* getViewProviderName() const override {
+        return "MeasureGui::ViewProviderMeasure";
+    }
+
+    static bool isValidSelection(const App::MeasureSelection& selection);
+    void parseSelection(const App::MeasureSelection& selection) override;
+    
+    std::vector<std::string> getInputProps() override {return {"Element"};}
+    App::Property* getResultProp() override {return &this->Position;}
+    QString getResultString() override;
+
+    Base::Placement getPlacement() override;
+
+    // Return the object we are measuring
+    std::vector<App::DocumentObject*> getSubject() const override;
+
+private:
+
+    void onChanged(const App::Property* prop) override;
+};
+
+} //namespace Measure
+
+
+#endif // APP_MEASUREPOSITION_H