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/* -*- 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_SLIDESHOW_SOURCE_INC_SHAPESUBSET_HXX
#define INCLUDED_SLIDESHOW_SOURCE_INC_SHAPESUBSET_HXX
#include "subsettableshapemanager.hxx"
#include "doctreenode.hxx"
#include <memory>
namespace slideshow::internal
{
class ShapeSubset;
typedef ::std::shared_ptr< ShapeSubset > ShapeSubsetSharedPtr;
/* Definition of ShapeSubset class */
/** Subset RAII wrapper for shapes.
This class wraps the plain Shape with a wrapper for subset
functionality. Subsetting can be turned on and off. Note
that the reason to have shape subsetting RAII implemented
separately (i.e. not within the DrawShape) was that
subsetting (and de-subsetting) needs the
SubsettableShapeManager. And holding that at the DrawShape
creates one heck of a circular reference.
*/
class ShapeSubset
{
public:
/** Create a subset directly from a Shape.
@param rOriginalShape
Original shape to subset
@param rTreeNode
Subset this object should represent
@param rShapeManager
Manager object, where subsets are
registered/unregistered
*/
ShapeSubset( AttributableShapeSharedPtr xOriginalShape,
const DocTreeNode& rTreeNode,
SubsettableShapeManagerSharedPtr xSubsetManager );
/** Create a subset from another subset.
Note: if you want this subset to subtract from the
passed subset reference (and not from the original,
unsubsetted shape), the passed subset must be enabled
(enableSubsetShape() must have been called)
@param rOriginalSubset
Original subset, which to subset again.
@param rTreeNode
Subset of the original subset
*/
ShapeSubset( const ShapeSubsetSharedPtr& rOriginalSubset,
const DocTreeNode& rTreeNode );
/** Create full set for the given shape.
@param rOriginalShape
Original shape, which will be represented as a whole
by this object
*/
ShapeSubset( AttributableShapeSharedPtr xOriginalShape,
SubsettableShapeManagerSharedPtr xShapeManager );
~ShapeSubset();
// For a rationale for this hacky combination of user-provided dtor, defaulted copy
// ctor, and deleted copy assignment op, see the "TODO(Q1)" comment in
// CloningNodeCreator (slideshow/source/engine/animationnodes/animationnodefactory.cxx):
ShapeSubset(ShapeSubset const &) = default;
void operator =(ShapeSubset const &) = delete;
/** Get the actual subset shape.
If the subset is currently revoked, this method
returns the original shape.
*/
AttributableShapeSharedPtr const & getSubsetShape() const;
/** Enable the subset shape.
This method enables the subset. That means, on
successful completion of this method, the original
shape will cease to show the subset range, and
getSubsetShape() will return a valid shape.
*/
void enableSubsetShape();
/** Disable the subset shape.
This method revokes the subset from the original
shape. That means, the original shape will again show
the hidden range.
*/
void disableSubsetShape();
/** Query whether this subset actually is none, but
contains the whole original shape's content
*/
bool isFullSet() const;
/** Query subset this object represents
*/
const DocTreeNode& getSubset() const;
private:
// default copy/assignment are okay
//ShapeSubset(const ShapeSubset&);
//ShapeSubset& operator=( const ShapeSubset& );
AttributableShapeSharedPtr mpOriginalShape;
AttributableShapeSharedPtr mpSubsetShape;
DocTreeNode maTreeNode;
SubsettableShapeManagerSharedPtr mpShapeManager;
};
}
#endif // INCLUDED_SLIDESHOW_SOURCE_INC_SHAPESUBSET_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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