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create/src/Mod/Measure/App/MeasureBase.h

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/***************************************************************************
* 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 MEASURE_MEASUREBASE_H
#define MEASURE_MEASUREBASE_H
#include <Mod/Measure/MeasureGlobal.h>
#include <memory>
#include <QString>
#include <App/DocumentObject.h>
#include <App/MeasureManager.h>
#include <App/DocumentObserver.h>
#include <App/PropertyStandard.h>
#include <App/PropertyUnits.h>
#include <App/FeaturePython.h>
#include <Base/Quantity.h>
#include <Base/Placement.h>
#include <Base/Interpreter.h>
#include <Mod/Part/App/MeasureInfo.h>
#include <Mod/Part/App/MeasureClient.h> // needed?
namespace Measure
{
class MeasureExport MeasureBase : public App::DocumentObject
{
PROPERTY_HEADER_WITH_OVERRIDE(Measure::MeasureBase);
public:
MeasureBase();
~MeasureBase() override = default;
App::PropertyPlacement Placement;
// boost::signals2::signal<void (const MeasureBase*)> signalGuiInit;
//return PyObject as MeasureBasePy
PyObject *getPyObject() override;
// Initialize measurement properties from selection
virtual void parseSelection(const App::MeasureSelection& selection);
virtual QString getResultString();
virtual std::vector<std::string> getInputProps();
virtual App::Property* getResultProp() {return {};};
virtual Base::Placement getPlacement();
// Return the objects that are measured
virtual std::vector<App::DocumentObject*> getSubject() const;
private:
Py::Object getProxyObject() const;
protected:
void onDocumentRestored() override;
};
// Create a scriptable object based on MeasureBase
using MeasurePython = App::FeaturePythonT<MeasureBase>;
template <typename T>
class MeasureExport MeasureBaseExtendable : public MeasureBase
{
using GeometryHandler = std::function<Part::MeasureInfoPtr (const App::SubObjectT&)>;
using HandlerMap = std::map<std::string, GeometryHandler>;
public:
static void addGeometryHandler(const std::string& module, GeometryHandler callback) {
_mGeometryHandlers[module] = callback;
}
static GeometryHandler getGeometryHandler(const std::string& module) {
if (!hasGeometryHandler(module)) {
return {};
}
return _mGeometryHandlers[module];
}
static void addGeometryHandlers(const std::vector<std::string>& modules, GeometryHandler callback){
// TODO: this will replace a callback with a later one. Should we check that there isn't already a
// handler defined for this module?
for (auto& mod : modules) {
_mGeometryHandlers[mod] = callback;
}
}
static bool hasGeometryHandler(const std::string& module) {
return (_mGeometryHandlers.count(module) > 0);
}
private:
inline static HandlerMap _mGeometryHandlers = MeasureBaseExtendable<T>::HandlerMap();
};
} //namespace Measure
#endif // MEASURE_MEASUREBASE_H