83 lines
3.0 KiB
C++
83 lines
3.0 KiB
C++
// SPDX-License-Identifier: LGPL-2.1-or-later
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/****************************************************************************
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* *
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* Copyright (c) 2025 Kacper Donat <kacper@kadet.net> *
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* *
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* This file is part of FreeCAD. *
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* *
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* FreeCAD is free software: you can redistribute it and/or modify it *
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* under the terms of the GNU Lesser General Public License as *
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* published by the Free Software Foundation, either version 2.1 of the *
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* License, or (at your option) any later version. *
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* *
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* FreeCAD is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public *
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* License along with FreeCAD. If not, see *
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* <https://www.gnu.org/licenses/>. *
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* *
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***************************************************************************/
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#ifndef PART_PREVIEWEXTENSION_H
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#define PART_PREVIEWEXTENSION_H
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#include "PropertyTopoShape.h"
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#include <App/DocumentObject.h>
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#include <App/DocumentObjectExtension.h>
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#include <App/ExtensionPython.h>
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namespace Part
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{
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class PartExport PreviewExtension: public App::DocumentObjectExtension
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{
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EXTENSION_PROPERTY_HEADER_WITH_OVERRIDE(Part::PreviewExtension);
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using inherited = DocumentObjectExtension;
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public:
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/// Shape displayed as a semi-transparent preview, should be a delta between current state and
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/// previous one
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PropertyPartShape PreviewShape;
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PreviewExtension();
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bool isPreviewFresh() const
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{
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return _isPreviewFresh;
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}
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void updatePreview();
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virtual bool mustRecomputePreview() const;
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protected:
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void extensionOnChanged(const App::Property* prop) override;
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virtual App::DocumentObjectExecReturn* recomputePreview()
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{
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return App::DocumentObject::StdReturn;
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};
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private:
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bool _isPreviewFresh {false};
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};
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template<typename ExtensionT>
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class PreviewExtensionPythonT: public ExtensionT
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{
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public:
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PreviewExtensionPythonT() = default;
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~PreviewExtensionPythonT() override = default;
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};
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using PreviewExtensionPython = App::ExtensionPythonT<PreviewExtensionPythonT<PreviewExtension>>;
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} // namespace Part
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#endif // PART_PREVIEWEXTENSION_H
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