|
826
|
1 /**
|
|
|
2 * Stone of Orthanc
|
|
|
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
|
|
|
4 * Department, University Hospital of Liege, Belgium
|
|
|
5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
|
|
|
6 *
|
|
|
7 * This program is free software: you can redistribute it and/or
|
|
|
8 * modify it under the terms of the GNU Affero General Public License
|
|
|
9 * as published by the Free Software Foundation, either version 3 of
|
|
|
10 * the License, or (at your option) any later version.
|
|
|
11 *
|
|
|
12 * This program is distributed in the hope that it will be useful, but
|
|
|
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
15 * Affero General Public License for more details.
|
|
|
16 *
|
|
|
17 * You should have received a copy of the GNU Affero General Public License
|
|
|
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
19 **/
|
|
|
20
|
|
|
21
|
|
|
22 #pragma once
|
|
|
23
|
|
|
24 #include "../../Framework/OpenGL/WebAssemblyOpenGLContext.h"
|
|
|
25 #include "../../Framework/Scene2D/OpenGLCompositor.h"
|
|
|
26 #include "../../Framework/Scene2D/PanSceneTracker.h"
|
|
|
27 #include "../../Framework/Scene2D/RotateSceneTracker.h"
|
|
|
28 #include "../../Framework/Scene2D/ZoomSceneTracker.h"
|
|
|
29 #include "../../Framework/Scene2DViewport/ViewportController.h"
|
|
|
30
|
|
|
31 #include <Core/OrthancException.h>
|
|
|
32
|
|
|
33 #include <emscripten/html5.h>
|
|
|
34
|
|
|
35 static const unsigned int FONT_SIZE = 32;
|
|
|
36
|
|
|
37 namespace OrthancStone
|
|
|
38 {
|
|
|
39 class WebAssemblyViewport : public boost::noncopyable
|
|
|
40 {
|
|
|
41 private:
|
|
|
42 // the construction order is important because compositor_
|
|
|
43 // will hold a reference to the scene that belong to the
|
|
|
44 // controller_ object
|
|
|
45 OpenGL::WebAssemblyOpenGLContext context_;
|
|
|
46 boost::shared_ptr<ViewportController> controller_;
|
|
|
47 OpenGLCompositor compositor_;
|
|
|
48
|
|
|
49 void SetupEvents(const std::string& canvas);
|
|
|
50
|
|
|
51 public:
|
|
|
52 WebAssemblyViewport(MessageBroker& broker,
|
|
|
53 const std::string& canvas) :
|
|
|
54 context_(canvas),
|
|
|
55 controller_(new ViewportController(broker)),
|
|
|
56 compositor_(context_, *controller_->GetScene())
|
|
|
57 {
|
|
|
58 compositor_.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT,
|
|
|
59 FONT_SIZE, Orthanc::Encoding_Latin1);
|
|
|
60 SetupEvents(canvas);
|
|
|
61 }
|
|
|
62
|
|
|
63 Scene2D& GetScene()
|
|
|
64 {
|
|
|
65 return *controller_->GetScene();
|
|
|
66 }
|
|
|
67
|
|
|
68 const boost::shared_ptr<ViewportController>& GetController()
|
|
|
69 {
|
|
|
70 return controller_;
|
|
|
71 }
|
|
|
72
|
|
|
73 void UpdateSize()
|
|
|
74 {
|
|
|
75 context_.UpdateSize();
|
|
|
76 compositor_.UpdateSize();
|
|
|
77 Refresh();
|
|
|
78 }
|
|
|
79
|
|
|
80 void Refresh()
|
|
|
81 {
|
|
|
82 compositor_.Refresh();
|
|
|
83 }
|
|
|
84
|
|
|
85 void FitContent()
|
|
|
86 {
|
|
|
87 GetScene().FitContent(context_.GetCanvasWidth(), context_.GetCanvasHeight());
|
|
|
88 }
|
|
|
89
|
|
|
90 const std::string& GetCanvasIdentifier() const
|
|
|
91 {
|
|
|
92 return context_.GetCanvasIdentifier();
|
|
|
93 }
|
|
|
94
|
|
|
95 ScenePoint2D GetPixelCenterCoordinates(int x, int y) const
|
|
|
96 {
|
|
|
97 return compositor_.GetPixelCenterCoordinates(x, y);
|
|
|
98 }
|
|
|
99
|
|
|
100 unsigned int GetCanvasWidth() const
|
|
|
101 {
|
|
|
102 return context_.GetCanvasWidth();
|
|
|
103 }
|
|
|
104
|
|
|
105 unsigned int GetCanvasHeight() const
|
|
|
106 {
|
|
|
107 return context_.GetCanvasHeight();
|
|
|
108 }
|
|
|
109 };
|
|
|
110
|
|
|
111 class ActiveTracker : public boost::noncopyable
|
|
|
112 {
|
|
|
113 private:
|
|
|
114 boost::shared_ptr<IFlexiblePointerTracker> tracker_;
|
|
|
115 std::string canvasIdentifier_;
|
|
|
116 bool insideCanvas_;
|
|
|
117
|
|
|
118 public:
|
|
|
119 ActiveTracker(const boost::shared_ptr<IFlexiblePointerTracker>& tracker,
|
|
|
120 const WebAssemblyViewport& viewport) :
|
|
|
121 tracker_(tracker),
|
|
|
122 canvasIdentifier_(viewport.GetCanvasIdentifier()),
|
|
|
123 insideCanvas_(true)
|
|
|
124 {
|
|
|
125 if (tracker_.get() == NULL)
|
|
|
126 {
|
|
|
127 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
|
|
|
128 }
|
|
|
129 }
|
|
|
130
|
|
|
131 bool IsAlive() const
|
|
|
132 {
|
|
|
133 return tracker_->IsAlive();
|
|
|
134 }
|
|
|
135
|
|
|
136 void PointerMove(const PointerEvent& event)
|
|
|
137 {
|
|
|
138 tracker_->PointerMove(event);
|
|
|
139 }
|
|
|
140
|
|
|
141 void PointerUp(const PointerEvent& event)
|
|
|
142 {
|
|
|
143 tracker_->PointerUp(event);
|
|
|
144 }
|
|
|
145 };
|
|
|
146 }
|
|
|
147
|
|
|
148 static OrthancStone::PointerEvent* ConvertMouseEvent(
|
|
|
149 const EmscriptenMouseEvent& source,
|
|
|
150 OrthancStone::WebAssemblyViewport& viewport)
|
|
|
151 {
|
|
|
152 std::auto_ptr<OrthancStone::PointerEvent> target(
|
|
|
153 new OrthancStone::PointerEvent);
|
|
|
154
|
|
|
155 target->AddPosition(viewport.GetPixelCenterCoordinates(
|
|
|
156 source.targetX, source.targetY));
|
|
|
157 target->SetAltModifier(source.altKey);
|
|
|
158 target->SetControlModifier(source.ctrlKey);
|
|
|
159 target->SetShiftModifier(source.shiftKey);
|
|
|
160
|
|
|
161 return target.release();
|
|
|
162 }
|
|
|
163
|
|
|
164 std::auto_ptr<OrthancStone::ActiveTracker> tracker_;
|
|
|
165
|
|
|
166 EM_BOOL OnMouseEvent(int eventType,
|
|
|
167 const EmscriptenMouseEvent *mouseEvent,
|
|
|
168 void *userData)
|
|
|
169 {
|
|
|
170 if (mouseEvent != NULL &&
|
|
|
171 userData != NULL)
|
|
|
172 {
|
|
|
173 OrthancStone::WebAssemblyViewport& viewport =
|
|
|
174 *reinterpret_cast<OrthancStone::WebAssemblyViewport*>(userData);
|
|
|
175
|
|
|
176 switch (eventType)
|
|
|
177 {
|
|
|
178 case EMSCRIPTEN_EVENT_CLICK:
|
|
|
179 {
|
|
|
180 static unsigned int count = 0;
|
|
|
181 char buf[64];
|
|
|
182 sprintf(buf, "click %d", count++);
|
|
|
183
|
|
|
184 std::auto_ptr<OrthancStone::TextSceneLayer> layer(new OrthancStone::TextSceneLayer);
|
|
|
185 layer->SetText(buf);
|
|
|
186 viewport.GetScene().SetLayer(100, layer.release());
|
|
|
187 viewport.Refresh();
|
|
|
188 break;
|
|
|
189 }
|
|
|
190
|
|
|
191 case EMSCRIPTEN_EVENT_MOUSEDOWN:
|
|
|
192 {
|
|
|
193 boost::shared_ptr<OrthancStone::IFlexiblePointerTracker> t;
|
|
|
194
|
|
|
195 {
|
|
|
196 std::auto_ptr<OrthancStone::PointerEvent> event(
|
|
|
197 ConvertMouseEvent(*mouseEvent, viewport));
|
|
|
198
|
|
|
199 switch (mouseEvent->button)
|
|
|
200 {
|
|
|
201 case 0: // Left button
|
|
|
202 emscripten_console_log("Creating RotateSceneTracker");
|
|
|
203 t.reset(new OrthancStone::RotateSceneTracker(
|
|
|
204 viewport.GetController(), *event));
|
|
|
205 break;
|
|
|
206
|
|
|
207 case 1: // Middle button
|
|
|
208 emscripten_console_log("Creating PanSceneTracker");
|
|
|
209 LOG(INFO) << "Creating PanSceneTracker" ;
|
|
|
210 t.reset(new OrthancStone::PanSceneTracker(
|
|
|
211 viewport.GetController(), *event));
|
|
|
212 break;
|
|
|
213
|
|
|
214 case 2: // Right button
|
|
|
215 emscripten_console_log("Creating ZoomSceneTracker");
|
|
|
216 t.reset(new OrthancStone::ZoomSceneTracker(
|
|
|
217 viewport.GetController(), *event, viewport.GetCanvasWidth()));
|
|
|
218 break;
|
|
|
219
|
|
|
220 default:
|
|
|
221 break;
|
|
|
222 }
|
|
|
223 }
|
|
|
224
|
|
|
225 if (t.get() != NULL)
|
|
|
226 {
|
|
|
227 tracker_.reset(
|
|
|
228 new OrthancStone::ActiveTracker(t, viewport));
|
|
|
229 viewport.Refresh();
|
|
|
230 }
|
|
|
231
|
|
|
232 break;
|
|
|
233 }
|
|
|
234
|
|
|
235 case EMSCRIPTEN_EVENT_MOUSEMOVE:
|
|
|
236 if (tracker_.get() != NULL)
|
|
|
237 {
|
|
|
238 std::auto_ptr<OrthancStone::PointerEvent> event(
|
|
|
239 ConvertMouseEvent(*mouseEvent, viewport));
|
|
|
240 tracker_->PointerMove(*event);
|
|
|
241 viewport.Refresh();
|
|
|
242 }
|
|
|
243 break;
|
|
|
244
|
|
|
245 case EMSCRIPTEN_EVENT_MOUSEUP:
|
|
|
246 if (tracker_.get() != NULL)
|
|
|
247 {
|
|
|
248 std::auto_ptr<OrthancStone::PointerEvent> event(
|
|
|
249 ConvertMouseEvent(*mouseEvent, viewport));
|
|
|
250 tracker_->PointerUp(*event);
|
|
|
251 viewport.Refresh();
|
|
|
252 if (!tracker_->IsAlive())
|
|
|
253 tracker_.reset();
|
|
|
254 }
|
|
|
255 break;
|
|
|
256
|
|
|
257 default:
|
|
|
258 break;
|
|
|
259 }
|
|
|
260 }
|
|
|
261
|
|
|
262 return true;
|
|
|
263 }
|
|
|
264
|
|
|
265
|
|
|
266 void OrthancStone::WebAssemblyViewport::SetupEvents(const std::string& canvas)
|
|
|
267 {
|
|
|
268 emscripten_set_mousedown_callback(canvas.c_str(), this, false, OnMouseEvent);
|
|
|
269 emscripten_set_mousemove_callback(canvas.c_str(), this, false, OnMouseEvent);
|
|
|
270 emscripten_set_mouseup_callback(canvas.c_str(), this, false, OnMouseEvent);
|
|
|
271 }
|
