5b2cd79ade
create a plugin that finds methods we can mark as final because they are not override in subclasses. Which is useful both as documentation (telling you that you don't need to worry about subclasses changing the implementation under you), and for performance, letting the compiler elide virtual calls in many cases. Apply the results to a subset of stuff in /include Change-Id: I7b5cc893ec2f343bc356bfc338e4cf531ffba1e0 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/165054 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
93 lines
3.9 KiB
C++
93 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#pragma once
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#include <drawinglayer/drawinglayerdllapi.h>
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#include <drawinglayer/primitive2d/baseprimitive2d.hxx>
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#include <drawinglayer/primitive2d/Primitive2DContainer.hxx>
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// GroupPrimitive2D class
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namespace drawinglayer::primitive2d
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{
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/** GroupPrimitive2D class
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Baseclass for all grouping 2D primitives
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The grouping primitive in its basic form is capable of holding
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a child primitive content and returns it on decomposition on default.
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It is used for two main purposes, but more may apply:
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- to transport extended information, e.g. for text classification,
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see e.g. TextHierarchy*Primitive2D implementations. Since they
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decompose to their child content, renderers not aware/interested
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in that extra information will just ignore these primitives
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- to encapsulate common geometry, e.g. the ShadowPrimitive2D implements
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applying a generic shadow to a child sequence by adding the needed
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offset and color stuff in the decomposition
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In most cases the decomposition is straightforward, so by default
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this primitive will not buffer the result and is not derived from
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BufferedDecompositionPrimitive2D, but from BasePrimitive2D.
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A renderer has to take GroupPrimitive2D derivations into account which
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are used to hold a state.
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Current Basic 2D StatePrimitives are:
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- TransparencePrimitive2D (objects with freely defined transparence)
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- InvertPrimitive2D (for XOR)
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- MaskPrimitive2D (for masking)
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- ModifiedColorPrimitive2D (for a stack of color modifications)
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- TransformPrimitive2D (for a transformation stack)
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*/
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class DRAWINGLAYER_DLLPUBLIC GroupPrimitive2D : public BasePrimitive2D
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{
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private:
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/// the children. Declared private since this shall never be changed at all after construction
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Primitive2DContainer maChildren;
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public:
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/// constructor
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explicit GroupPrimitive2D(Primitive2DContainer&& aChildren);
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/// data read access
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const Primitive2DContainer& getChildren() const { return maChildren; }
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void getChildren(Primitive2DDecompositionVisitor& rVisitor) const { rVisitor.visit(maChildren); }
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/// compare operator
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virtual bool operator==( const BasePrimitive2D& rPrimitive ) const override;
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/// local decomposition. Implementation will just return children
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virtual void get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const override;
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/// provide unique ID
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virtual sal_uInt32 getPrimitive2DID() const override;
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// XAccounting
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virtual sal_Int64 estimateUsage() override final;
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};
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} // end of namespace drawinglayer::primitive2d
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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