Mercurial > hg > orthanc-stone
view OrthancStone/Sources/Scene2D/Internals/FixedPointAligner.h @ 1886:ca89fec8c48f
test
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Fri, 14 Jan 2022 19:10:30 +0100 |
parents | 7053b8a0aaec |
children | 9c0adcc8feec |
line wrap: on
line source
/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2022 Osimis S.A., Belgium * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * This program 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 for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program. If not, see * <http://www.gnu.org/licenses/>. **/ #pragma once #include "../../Scene2DViewport/PredeclaredTypes.h" #include "../../Scene2D/ScenePoint2D.h" #include "../../Viewport/IViewport.h" #include <boost/weak_ptr.hpp> namespace OrthancStone { namespace Internals { // During a mouse event that modifies the view of a scene, keeps // one point (the pivot) at a fixed position on the canvas class FixedPointAligner : public boost::noncopyable { private: boost::weak_ptr<IViewport> viewport_; ScenePoint2D pivot_; ScenePoint2D canvas_; /** This will return a scoped lock to the viewport. If the viewport does not exist anymore, then nullptr is returned. */ IViewport::ILock* GetViewportLock(); public: FixedPointAligner(boost::weak_ptr<IViewport> viewport, const ScenePoint2D& p); void Apply(); }; } }