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libreoffice/cppcanvas/source/inc/canvasgraphichelper.hxx

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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 .
*/
#pragma once
#include <com/sun/star/rendering/RenderState.hpp>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <cppcanvas/canvasgraphic.hxx>
#include <cppcanvas/canvas.hxx>
Introduce o3tl::optional as an alias for std::optional ...with a boost::optional fallback for Xcode < 10 (as std::optional is only available starting with Xcode 10 according to <https://en.cppreference.com/w/cpp/compiler_support>, and our baseline for iOS and macOS is still Xcode 9.3 according to README.md). And mechanically rewrite all code to use o3tl::optional instead of boost::optional. One immediate benefit is that disabling -Wmaybe-uninitialized for GCC as per fed7c3deb3f4ec81f78967c2d7f3c4554398cb9d "Slience bogus -Werror=maybe-uninitialized" should no longer be necessary (and whose check happened to no longer trigger for GCC 10 trunk, even though that compiler would still emit bogus -Wmaybe-uninitialized for uses of boost::optional under --enable-optimized, which made me ponder whether this switch from boost::optional to std::optional would be a useful thing to do; I keep that configure.ac check for now, though, and will only remove it in a follow up commit). Another longer-term benefit is that the code is now already in good shape for an eventual switch to std::optional (a switch we would have done anyway once we no longer need to support Xcode < 10). Only desktop/qa/desktop_lib/test_desktop_lib.cxx heavily uses boost::property_tree::ptree::get_child_optional returning boost::optional, so let it keep using boost::optional for now. After a number of preceding commits have paved the way for this change, this commit is completely mechanical, done with > git ls-files -z | grep -vz -e '^bin/find-unneeded-includes$' -e '^configure.ac$' -e '^desktop/qa/desktop_lib/test_desktop_lib.cxx$' -e '^dictionaries$' -e '^external/' -e '^helpcontent2$' -e '^include/IwyuFilter_include.yaml$' -e '^sc/IwyuFilter_sc.yaml$' -e '^solenv/gdb/boost/optional.py$' -e '^solenv/vs/LibreOffice.natvis$' -e '^translations$' -e '\.svg$' | xargs -0 sed -i -E -e 's|\<boost(/optional)?/optional\.hpp\>|o3tl/optional.hxx|g' -e 's/\<boost(\s*)::(\s*)(make_)?optional\>/o3tl\1::\2\3optional/g' -e 's/\<boost(\s*)::(\s*)none\>/o3tl\1::\2nullopt/g' (before committing include/o3tl/optional.hxx, and relying on some GNU features). It excludes some files where mention of boost::optional et al should apparently not be changed (and the sub-repo directory stubs). It turned out that all uses of boost::none across the code base were in combination with boost::optional, so had all to be rewritten as o3tl::nullopt. Change-Id: Ibfd9f4b3d5a8aee6e6eed310b988c4e5ffd8b11b Reviewed-on: https://gerrit.libreoffice.org/84128 Tested-by: Jenkins Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
2019-11-30 17:48:32 +01:00
#include <o3tl/optional.hxx>
namespace com { namespace sun { namespace star { namespace rendering
{
class XGraphicDevice;
} } } }
/* Definition of CanvasGraphicHelper class */
namespace cppcanvas
{
namespace internal
{
class CanvasGraphicHelper : public virtual CanvasGraphic
{
public:
CanvasGraphicHelper( const CanvasSharedPtr& rParentCanvas );
// CanvasGraphic implementation
virtual void setTransformation( const ::basegfx::B2DHomMatrix& rMatrix ) override;
virtual void setClip( const ::basegfx::B2DPolyPolygon& rClipPoly ) override;
virtual void setClip() override;
virtual void setCompositeOp( sal_Int8 aOp ) override;
protected:
// for our clients
// ===============
const CanvasSharedPtr& getCanvas() const { return mpCanvas; }
const css::rendering::RenderState& getRenderState() const;
private:
mutable css::rendering::RenderState maRenderState;
Introduce o3tl::optional as an alias for std::optional ...with a boost::optional fallback for Xcode < 10 (as std::optional is only available starting with Xcode 10 according to <https://en.cppreference.com/w/cpp/compiler_support>, and our baseline for iOS and macOS is still Xcode 9.3 according to README.md). And mechanically rewrite all code to use o3tl::optional instead of boost::optional. One immediate benefit is that disabling -Wmaybe-uninitialized for GCC as per fed7c3deb3f4ec81f78967c2d7f3c4554398cb9d "Slience bogus -Werror=maybe-uninitialized" should no longer be necessary (and whose check happened to no longer trigger for GCC 10 trunk, even though that compiler would still emit bogus -Wmaybe-uninitialized for uses of boost::optional under --enable-optimized, which made me ponder whether this switch from boost::optional to std::optional would be a useful thing to do; I keep that configure.ac check for now, though, and will only remove it in a follow up commit). Another longer-term benefit is that the code is now already in good shape for an eventual switch to std::optional (a switch we would have done anyway once we no longer need to support Xcode < 10). Only desktop/qa/desktop_lib/test_desktop_lib.cxx heavily uses boost::property_tree::ptree::get_child_optional returning boost::optional, so let it keep using boost::optional for now. After a number of preceding commits have paved the way for this change, this commit is completely mechanical, done with > git ls-files -z | grep -vz -e '^bin/find-unneeded-includes$' -e '^configure.ac$' -e '^desktop/qa/desktop_lib/test_desktop_lib.cxx$' -e '^dictionaries$' -e '^external/' -e '^helpcontent2$' -e '^include/IwyuFilter_include.yaml$' -e '^sc/IwyuFilter_sc.yaml$' -e '^solenv/gdb/boost/optional.py$' -e '^solenv/vs/LibreOffice.natvis$' -e '^translations$' -e '\.svg$' | xargs -0 sed -i -E -e 's|\<boost(/optional)?/optional\.hpp\>|o3tl/optional.hxx|g' -e 's/\<boost(\s*)::(\s*)(make_)?optional\>/o3tl\1::\2\3optional/g' -e 's/\<boost(\s*)::(\s*)none\>/o3tl\1::\2nullopt/g' (before committing include/o3tl/optional.hxx, and relying on some GNU features). It excludes some files where mention of boost::optional et al should apparently not be changed (and the sub-repo directory stubs). It turned out that all uses of boost::none across the code base were in combination with boost::optional, so had all to be rewritten as o3tl::nullopt. Change-Id: Ibfd9f4b3d5a8aee6e6eed310b988c4e5ffd8b11b Reviewed-on: https://gerrit.libreoffice.org/84128 Tested-by: Jenkins Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
2019-11-30 17:48:32 +01:00
o3tl::optional<basegfx::B2DPolyPolygon> maClipPolyPolygon;
CanvasSharedPtr mpCanvas;
};
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */