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Diffstat (limited to 'svx/inc/svx/e3dsceneupdater.hxx')
-rw-r--r-- | svx/inc/svx/e3dsceneupdater.hxx | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/svx/inc/svx/e3dsceneupdater.hxx b/svx/inc/svx/e3dsceneupdater.hxx new file mode 100644 index 000000000000..ad38491945d5 --- /dev/null +++ b/svx/inc/svx/e3dsceneupdater.hxx @@ -0,0 +1,74 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#ifndef _E3D_SCENEUPDATER_HXX +#define _E3D_SCENEUPDATER_HXX + +#include <svx/svxdllapi.h> + +////////////////////////////////////////////////////////////////////////////// +// predeclarations + +class SdrObject; +class E3dScene; +namespace drawinglayer { namespace geometry { + class ViewInformation3D; +}} + +////////////////////////////////////////////////////////////////////////////// +// 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 it's 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 eventually changed +// 3D content and tu use it. This is only wanted if changes to the scene's +// content are intended to change the scene's 2D geometry attributes + +class SVX_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 + drawinglayer::geometry::ViewInformation3D* mpViewInformation3D; + +public: + // the constructor evaluates and sets the members at construction time + E3DModifySceneSnapRectUpdater(const SdrObject* pObject); + + // the destructor will take action if mpScene is not zero and modify the + // 2D geomeztry of the target scene + ~E3DModifySceneSnapRectUpdater(); +}; + +#endif // _E3D_SCENEUPDATER_HXX |