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-rw-r--r-- | include/svx/e3dsceneupdater.hxx | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/include/svx/e3dsceneupdater.hxx b/include/svx/e3dsceneupdater.hxx new file mode 100644 index 000000000..dd7954180 --- /dev/null +++ b/include/svx/e3dsceneupdater.hxx @@ -0,0 +1,70 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#ifndef INCLUDED_SVX_E3DSCENEUPDATER_HXX +#define INCLUDED_SVX_E3DSCENEUPDATER_HXX + +#include <svx/svxdllapi.h> +#include <memory> + +class SdrObject; +class E3dScene; + +namespace drawinglayer::geometry { + class ViewInformation3D; +} + +/** Helper for 3d object changes affecting 2d geometry + + This class is a helper to encapsulate 3D object changes which shall + change the scene's 2D geometry. E.g. when moving one 3D object in a + scene, the visualisation would not change since the scene's 2D + attributes are defined by its 2D object transformation and the + changed content would be projected to the same 2D bounds as + before. To reflect the fact that the 2D positions may 'change' for + the user's imagination, it is necessary to calculate a new 2D + object transformation of the scene (the SnapRect) using the old 3D + transformation stack and the possibly modified 3D content and to + use it. This is only desirable if changes to the scene's content + are intended to change the scene's 2D geometry attributes +*/ +class SVXCORE_DLLPUBLIC E3DModifySceneSnapRectUpdater +{ + // the scene which may be changed. This gets set to the outmost scene + // of the to-be-changed 3D object when the scene has a 3d transformation + // stack at construction time. In all other cases it's set to zero and + // no action needs to be taken + E3dScene* mpScene; + + // the 3d transformation stack at the time of construction, valid when + // mpScene is not zero + std::unique_ptr<drawinglayer::geometry::ViewInformation3D> mpViewInformation3D; + +public: + // the constructor evaluates and sets the members at construction time + E3DModifySceneSnapRectUpdater(const SdrObject* mpObject); + + // the destructor will take action if mpScene is not zero and modify the + // 2D geometry of the target scene + ~E3DModifySceneSnapRectUpdater(); +}; + +#endif // INCLUDED_SVX_E3DSCENEUPDATER_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |