Mercurial > hg > orthanc-stone
diff Framework/Scene2DViewport/OneGesturePointerTracker.h @ 700:059e1fd05fd6 refactor-viewport-controller
Introduced the ViewportController that sits between the application and the
Scene2D to handle the trackers and measuring tools. This is a work in progress.
The Scene2D is no longer an observable. Message sending is managed by the
ViewportController.
Move some refs to shared and weak to prevent lifetime issues.
author | Benjamin Golinvaux <bgo@osimis.io> |
---|---|
date | Sun, 19 May 2019 16:26:17 +0200 |
parents | |
children | 28b9e3a54200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Scene2DViewport/OneGesturePointerTracker.h Sun May 19 16:26:17 2019 +0200 @@ -0,0 +1,54 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017-2019 Osimis S.A., Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU Affero 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 + * Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + +#pragma once + +#include "IFlexiblePointerTracker.h" + +namespace OrthancStone +{ + /** + This base is class allows to write simple trackers that deal with single + drag gestures. It is *not* suitables for multi-state trackers where various + mouse operations need to be handled. + + In order to write such a tracker: + - subclass this class + - you may store the initial click/touch position in the constructor + - implement PointerMove to react to pointer/touch events + - implement Cancel to restore the state at initial tracker creation time + */ + class OneGesturePointerTracker : public IFlexiblePointerTracker + { + public: + OneGesturePointerTracker(ViewportControllerWPtr controllerW); + virtual void PointerUp(const PointerEvent& event) ORTHANC_OVERRIDE; + virtual void PointerDown(const PointerEvent& event) ORTHANC_OVERRIDE; + virtual bool IsAlive() const ORTHANC_OVERRIDE; + + protected: + ViewportControllerPtr GetController(); + + private: + ViewportControllerWPtr controllerW_; + bool alive_; + }; +} +