office-gobmx/include/drawinglayer/primitive2d/invertprimitive2d.hxx
Noel Grandin 8104d771b1 tdf#144052 reduce Primitive2D copying
when creating charts, by using a
    Primitive2DContainer&&
parameter in the GroupPrimitive2D constructor, which forces the call
sites to pass a temporary, and at most call sites, we can std::move in
an existing local variable.

Change-Id: I531970918800c6832ab606b5a4ff5fd2d47ccf5b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/121844
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
2021-09-09 15:22:52 +02:00

51 lines
2 KiB
C++

/* -*- 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 .
*/
#pragma once
#include <drawinglayer/drawinglayerdllapi.h>
#include <drawinglayer/primitive2d/groupprimitive2d.hxx>
namespace drawinglayer::primitive2d
{
/** InvertPrimitive2D class
This is a helper class which encapsulates geometry that should be
painted XOR, e.g. old cursor visualisations. It decomposes to
its content, so when not supporting it, the contained geometry
will be visualized normally.
Unfortunately this is still needed, but hard to support on various
systems. XOR painting needs read access to the target, so modern
graphic systems tend to not support it anymore.
*/
class DRAWINGLAYER_DLLPUBLIC InvertPrimitive2D final : public GroupPrimitive2D
{
public:
/// constructor
explicit InvertPrimitive2D(Primitive2DContainer&& aChildren);
/// provide unique ID
virtual sal_uInt32 getPrimitive2DID() const override;
};
} // end of namespace drawinglayer::primitive2d
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */