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Diffstat (limited to 'slideshow/source/inc/shapeattributelayerholder.hxx')
-rw-r--r-- | slideshow/source/inc/shapeattributelayerholder.hxx | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/slideshow/source/inc/shapeattributelayerholder.hxx b/slideshow/source/inc/shapeattributelayerholder.hxx new file mode 100644 index 000000000000..17131e3eeb43 --- /dev/null +++ b/slideshow/source/inc/shapeattributelayerholder.hxx @@ -0,0 +1,110 @@ +/************************************************************************* + * + * 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 INCLUDED_SLIDESHOW_SHAPEATTRIBUTELAYERHOLDER_HXX +#define INCLUDED_SLIDESHOW_SHAPEATTRIBUTELAYERHOLDER_HXX + +#include "attributableshape.hxx" +#include "shapeattributelayer.hxx" + +#include <boost/noncopyable.hpp> + +namespace slideshow +{ + namespace internal + { + /** Holds a ShapeAttributeLayer, together with the associated + Shape + + Use this class to hold ShapeAttributeLayer objects the + RAII way. When this object gets deleted, it will + automatically revoke the attribute layer for the given + shape (this encapsulates the somewhat clumsy notification + process that is required for shape and attribute layer + interaction). + */ + class ShapeAttributeLayerHolder : private boost::noncopyable + { + public: + /** Create a ShapeAttributeLayerHolder instance. + + This constructor creates an empty attribute holder, to + generate an attribute layer, you have to manually call + createAttributeLayer(). + */ + ShapeAttributeLayerHolder() : + mpShape(), + mpAttributeLayer() + { + } + + ~ShapeAttributeLayerHolder() + { + reset(); // ensures that the last attribute layer is + // correctly deregistered from the shape. + } + + void reset() + { + if( mpShape && mpAttributeLayer ) + mpShape->revokeAttributeLayer( mpAttributeLayer ); + } + + /** This constructor receives a pointer to the Shape, from + which attribute layers should be generated. Initially, + this object does not create an attribute layer, you + have to manually call createAttributeLayer(). + + @param rShape + Shape for which attribute layers should be generated. + */ + bool createAttributeLayer( const AttributableShapeSharedPtr& rShape ) + { + reset(); + + mpShape = rShape; + + if( mpShape ) + mpAttributeLayer = mpShape->createAttributeLayer(); + + return mpAttributeLayer; + } + + ShapeAttributeLayerSharedPtr get() const + { + return mpAttributeLayer; + } + + private: + AttributableShapeSharedPtr mpShape; + ShapeAttributeLayerSharedPtr mpAttributeLayer; + }; + + } +} + +#endif /* INCLUDED_SLIDESHOW_SHAPEATTRIBUTELAYERHOLDER_HXX */ |