Mercurial > hg > orthanc-stone
diff Deprecated/Samples/WebAssembly/dev.h @ 1402:65e1e4b08302
moved deprecated samples into Deprecated
author | Alain Mazy <alain@mazy.be> |
---|---|
date | Wed, 29 Apr 2020 20:50:53 +0200 |
parents | Samples/Deprecated/WebAssembly/dev.h@eac254fb6791 |
children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Deprecated/Samples/WebAssembly/dev.h Wed Apr 29 20:50:53 2020 +0200 @@ -0,0 +1,202 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017-2020 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 "../../Framework/Viewport/WebAssemblyViewport.h" +#include "../../Framework/Scene2D/OpenGLCompositor.h" +#include "../../Framework/Scene2D/PanSceneTracker.h" +#include "../../Framework/Scene2D/RotateSceneTracker.h" +#include "../../Framework/Scene2D/ZoomSceneTracker.h" +#include "../../Framework/Scene2DViewport/UndoStack.h" +#include "../../Framework/Scene2DViewport/ViewportController.h" + +#include <Core/OrthancException.h> + +#include <emscripten/html5.h> +#include <boost/make_shared.hpp> + +static const unsigned int FONT_SIZE = 32; + +namespace OrthancStone +{ + class ActiveTracker : public boost::noncopyable + { + private: + boost::shared_ptr<IFlexiblePointerTracker> tracker_; + std::string canvasIdentifier_; + bool insideCanvas_; + + public: + ActiveTracker(const boost::shared_ptr<IFlexiblePointerTracker>& tracker, + const std::string& canvasId) : + tracker_(tracker), + canvasIdentifier_(canvasId), + insideCanvas_(true) + { + if (tracker_.get() == NULL) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); + } + } + + bool IsAlive() const + { + return tracker_->IsAlive(); + } + + void PointerMove(const PointerEvent& event) + { + tracker_->PointerMove(event); + } + + void PointerUp(const PointerEvent& event) + { + tracker_->PointerUp(event); + } + }; +} + +static OrthancStone::PointerEvent* ConvertMouseEvent( + const EmscriptenMouseEvent& source, + OrthancStone::IViewport& viewport) +{ + std::unique_ptr<OrthancStone::PointerEvent> target( + new OrthancStone::PointerEvent); + + target->AddPosition(viewport.GetPixelCenterCoordinates( + source.targetX, source.targetY)); + target->SetAltModifier(source.altKey); + target->SetControlModifier(source.ctrlKey); + target->SetShiftModifier(source.shiftKey); + + return target.release(); +} + +std::unique_ptr<OrthancStone::ActiveTracker> tracker_; + +EM_BOOL OnMouseEvent(int eventType, + const EmscriptenMouseEvent *mouseEvent, + void *userData) +{ + if (mouseEvent != NULL && + userData != NULL) + { + boost::shared_ptr<OrthancStone::ViewportController>& controller = + *reinterpret_cast<boost::shared_ptr<OrthancStone::ViewportController>*>(userData); + + switch (eventType) + { + case EMSCRIPTEN_EVENT_CLICK: + { + static unsigned int count = 0; + char buf[64]; + sprintf(buf, "click %d", count++); + + std::unique_ptr<OrthancStone::TextSceneLayer> layer(new OrthancStone::TextSceneLayer); + layer->SetText(buf); + controller->GetViewport().GetScene().SetLayer(100, layer.release()); + controller->GetViewport().Refresh(); + break; + } + + case EMSCRIPTEN_EVENT_MOUSEDOWN: + { + boost::shared_ptr<OrthancStone::IFlexiblePointerTracker> t; + + { + std::unique_ptr<OrthancStone::PointerEvent> event( + ConvertMouseEvent(*mouseEvent, controller->GetViewport())); + + switch (mouseEvent->button) + { + case 0: // Left button + emscripten_console_log("Creating RotateSceneTracker"); + t.reset(new OrthancStone::RotateSceneTracker( + controller, *event)); + break; + + case 1: // Middle button + emscripten_console_log("Creating PanSceneTracker"); + LOG(INFO) << "Creating PanSceneTracker" ; + t.reset(new OrthancStone::PanSceneTracker( + controller, *event)); + break; + + case 2: // Right button + emscripten_console_log("Creating ZoomSceneTracker"); + t.reset(new OrthancStone::ZoomSceneTracker( + controller, *event, controller->GetViewport().GetCanvasWidth())); + break; + + default: + break; + } + } + + if (t.get() != NULL) + { + tracker_.reset( + new OrthancStone::ActiveTracker(t, controller->GetViewport().GetCanvasIdentifier())); + controller->GetViewport().Refresh(); + } + + break; + } + + case EMSCRIPTEN_EVENT_MOUSEMOVE: + if (tracker_.get() != NULL) + { + std::unique_ptr<OrthancStone::PointerEvent> event( + ConvertMouseEvent(*mouseEvent, controller->GetViewport())); + tracker_->PointerMove(*event); + controller->GetViewport().Refresh(); + } + break; + + case EMSCRIPTEN_EVENT_MOUSEUP: + if (tracker_.get() != NULL) + { + std::unique_ptr<OrthancStone::PointerEvent> event( + ConvertMouseEvent(*mouseEvent, controller->GetViewport())); + tracker_->PointerUp(*event); + controller->GetViewport().Refresh(); + if (!tracker_->IsAlive()) + tracker_.reset(); + } + break; + + default: + break; + } + } + + return true; +} + + +void SetupEvents(const std::string& canvas, + boost::shared_ptr<OrthancStone::ViewportController>& controller) +{ + emscripten_set_mousedown_callback(canvas.c_str(), &controller, false, OnMouseEvent); + emscripten_set_mousemove_callback(canvas.c_str(), &controller, false, OnMouseEvent); + emscripten_set_mouseup_callback(canvas.c_str(), &controller, false, OnMouseEvent); +}