Mercurial > hg > orthanc-stone
diff Framework/Widgets/WorldSceneWidget.h @ 0:351ab0da0150
initial commit
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 14 Oct 2016 15:34:11 +0200 |
parents | |
children | 7207a407bcd8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Widgets/WorldSceneWidget.h Fri Oct 14 15:34:11 2016 +0200 @@ -0,0 +1,158 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation, either version 3 of the + * License, or (at your option) any later version. + * + * In addition, as a special exception, the copyright holders of this + * program give permission to link the code of its release with the + * OpenSSL project's "OpenSSL" library (or with modified versions of it + * that use the same license as the "OpenSSL" library), and distribute + * the linked executables. You must obey the GNU General Public License + * in all respects for all of the code used other than "OpenSSL". If you + * modify file(s) with this exception, you may extend this exception to + * your version of the file(s), but you are not obligated to do so. If + * you do not wish to do so, delete this exception statement from your + * version. If you delete this exception statement from all source files + * in the program, then also delete it here. + * + * 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#pragma once + +#include "CairoWidget.h" +#include "IWorldSceneInteractor.h" + +#include "../Toolbox/SharedValue.h" +#include "../Toolbox/ViewportGeometry.h" + +namespace OrthancStone +{ + class WorldSceneWidget : public CairoWidget + { + public: + // Must be thread-safe + class IWorldObserver : public boost::noncopyable + { + public: + virtual ~IWorldObserver() + { + } + + virtual void NotifySizeChange(const WorldSceneWidget& source, + ViewportGeometry& view) = 0; // Can be tuned by the observer + + virtual void NotifyViewChange(const WorldSceneWidget& source, + const ViewportGeometry& view) = 0; + }; + + private: + struct ViewChangeFunctor; + struct SizeChangeFunctor; + + class SceneMouseTracker; + class PanMouseTracker; + class ZoomMouseTracker; + + typedef ObserversRegistry<WorldSceneWidget, IWorldObserver> Observers; + + SharedValue<ViewportGeometry> view_; + Observers observers_; + IWorldSceneInteractor* interactor_; + + + protected: + virtual bool RenderScene(CairoContext& context, + const ViewportGeometry& view) = 0; + + virtual bool HasUpdateThread() const + { + return false; + } + + virtual void UpdateStep(); + + virtual bool RenderCairo(CairoContext& context); + + virtual void RenderMouseOverCairo(CairoContext& context, + int x, + int y); + + void SetSceneExtent(SharedValue<ViewportGeometry>::Locker& locker); + + public: + WorldSceneWidget() : + interactor_(NULL) + { + } + + using WidgetBase::Register; + using WidgetBase::Unregister; + + void Register(IWorldObserver& observer) + { + observers_.Register(observer); + } + + void Unregister(IWorldObserver& observer) + { + observers_.Unregister(observer); + } + + virtual SliceGeometry GetSlice() = 0; + + virtual void GetSceneExtent(double& x1, + double& y1, + double& x2, + double& y2) = 0; + + virtual void SetSize(unsigned int width, + unsigned int height); + + void SetInteractor(IWorldSceneInteractor& interactor); + + virtual void Start(); + + void SetDefaultView(); + + void SetView(const ViewportGeometry& view); + + ViewportGeometry GetView(); + + virtual IMouseTracker* CreateMouseTracker(MouseButton button, + int x, + int y, + KeyboardModifiers modifiers); + + virtual void RenderSceneMouseOver(CairoContext& context, + const ViewportGeometry& view, + double x, + double y); + + virtual IWorldSceneMouseTracker* CreateMouseSceneTracker(const ViewportGeometry& view, + MouseButton button, + double x, + double y, + KeyboardModifiers modifiers); + + virtual void MouseWheel(MouseWheelDirection direction, + int x, + int y, + KeyboardModifiers modifiers); + + virtual void KeyPressed(char key, + KeyboardModifiers modifiers); + }; +}