Mercurial > hg > orthanc-stone
annotate Samples/Sdl/BasicScene.cpp @ 897:9c2f6d6b9f4a am-dev
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author | Alain Mazy <alain@mazy.be> |
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date | Tue, 16 Jul 2019 12:37:29 +0200 |
parents | 56e4e9281076 0aff28f15ea2 |
children | 64e5f3ff6360 |
rev | line source |
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600 | 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 // From Stone | |
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23 #include "../../Framework/Viewport/SdlViewport.h" |
600 | 24 #include "../../Framework/Scene2D/CairoCompositor.h" |
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25 #include "../../Framework/Scene2D/ColorTextureSceneLayer.h" |
600 | 26 #include "../../Framework/Scene2D/OpenGLCompositor.h" |
27 #include "../../Framework/Scene2D/PanSceneTracker.h" | |
28 #include "../../Framework/Scene2D/RotateSceneTracker.h" | |
29 #include "../../Framework/Scene2D/ZoomSceneTracker.h" | |
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30 #include "../../Framework/Scene2DViewport/ViewportController.h" |
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31 #include "../../Framework/Scene2DViewport/UndoStack.h" |
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32 |
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OrthancStone::StoneInitialize()
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33 #include "../../Framework/StoneInitialization.h" |
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34 #include "../../Framework/Messages/MessageBroker.h" |
600 | 35 |
36 // From Orthanc framework | |
37 #include <Core/Logging.h> | |
38 #include <Core/OrthancException.h> | |
39 #include <Core/Images/Image.h> | |
40 #include <Core/Images/ImageProcessing.h> | |
41 #include <Core/Images/PngWriter.h> | |
42 | |
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43 #include <boost/make_shared.hpp> |
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44 |
600 | 45 #include <SDL.h> |
46 #include <stdio.h> | |
47 | |
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48 static const unsigned int FONT_SIZE = 32; |
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49 static const int LAYER_POSITION = 150; |
600 | 50 |
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51 |
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52 void PrepareScene(OrthancStone::Scene2D& scene) |
600 | 53 { |
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54 using namespace OrthancStone; |
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55 |
600 | 56 // Texture of 2x2 size |
57 { | |
58 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false); | |
59 | |
60 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
61 p[0] = 255; | |
62 p[1] = 0; | |
63 p[2] = 0; | |
64 | |
65 p[3] = 0; | |
66 p[4] = 255; | |
67 p[5] = 0; | |
68 | |
69 p = reinterpret_cast<uint8_t*>(i.GetRow(1)); | |
70 p[0] = 0; | |
71 p[1] = 0; | |
72 p[2] = 255; | |
73 | |
74 p[3] = 255; | |
75 p[4] = 0; | |
76 p[5] = 0; | |
77 | |
78 scene.SetLayer(12, new ColorTextureSceneLayer(i)); | |
79 | |
80 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
81 l->SetOrigin(-3, 2); | |
82 l->SetPixelSpacing(1.5, 1); | |
83 l->SetAngle(20.0 / 180.0 * M_PI); | |
84 scene.SetLayer(14, l.release()); | |
85 } | |
86 | |
87 // Texture of 1x1 size | |
88 { | |
89 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false); | |
90 | |
91 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
92 p[0] = 255; | |
93 p[1] = 0; | |
94 p[2] = 0; | |
95 | |
96 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
97 l->SetOrigin(-2, 1); | |
98 l->SetAngle(20.0 / 180.0 * M_PI); | |
99 scene.SetLayer(13, l.release()); | |
100 } | |
101 | |
102 // Some lines | |
103 { | |
104 std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer); | |
105 | |
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106 layer->SetThickness(10); |
600 | 107 |
108 PolylineSceneLayer::Chain chain; | |
109 chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5)); | |
110 chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5)); | |
111 chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5)); | |
112 chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5)); | |
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113 layer->AddChain(chain, true, 255, 0, 0); |
600 | 114 |
115 chain.clear(); | |
116 chain.push_back(ScenePoint2D(-5, -5)); | |
117 chain.push_back(ScenePoint2D(5, -5)); | |
118 chain.push_back(ScenePoint2D(5, 5)); | |
119 chain.push_back(ScenePoint2D(-5, 5)); | |
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120 layer->AddChain(chain, true, 0, 255, 0); |
600 | 121 |
122 double dy = 1.01; | |
123 chain.clear(); | |
124 chain.push_back(ScenePoint2D(-4, -4)); | |
125 chain.push_back(ScenePoint2D(4, -4 + dy)); | |
126 chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy)); | |
127 chain.push_back(ScenePoint2D(4, 2)); | |
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128 layer->AddChain(chain, false, 0, 0, 255); |
600 | 129 |
130 scene.SetLayer(50, layer.release()); | |
131 } | |
132 | |
133 // Some text | |
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134 { |
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135 std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer); |
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136 layer->SetText("Hello"); |
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137 scene.SetLayer(100, layer.release()); |
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138 } |
600 | 139 } |
140 | |
141 | |
142 void TakeScreenshot(const std::string& target, | |
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143 const OrthancStone::Scene2D& scene, |
600 | 144 unsigned int canvasWidth, |
145 unsigned int canvasHeight) | |
146 { | |
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147 using namespace OrthancStone; |
600 | 148 // Take a screenshot, then save it as PNG file |
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149 CairoCompositor compositor(scene, canvasWidth, canvasHeight); |
600 | 150 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE, Orthanc::Encoding_Latin1); |
151 compositor.Refresh(); | |
152 | |
153 Orthanc::ImageAccessor canvas; | |
154 compositor.GetCanvas().GetReadOnlyAccessor(canvas); | |
155 | |
156 Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false); | |
157 Orthanc::ImageProcessing::Convert(png, canvas); | |
158 | |
159 Orthanc::PngWriter writer; | |
160 writer.WriteToFile(target, png); | |
161 } | |
162 | |
163 | |
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164 void HandleApplicationEvent(const SDL_Event& event, |
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165 boost::shared_ptr<OrthancStone::ViewportController>& controller, |
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166 boost::shared_ptr<OrthancStone::IFlexiblePointerTracker>& activeTracker) |
600 | 167 { |
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168 using namespace OrthancStone; |
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169 |
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170 Scene2D& scene = controller->GetScene(); |
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171 IViewport& viewport = controller->GetViewport(); |
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172 |
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173 if (event.type == SDL_MOUSEMOTION) |
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174 { |
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175 int scancodeCount = 0; |
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176 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount); |
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177 |
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178 if (activeTracker.get() == NULL && |
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179 SDL_SCANCODE_LCTRL < scancodeCount && |
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180 keyboardState[SDL_SCANCODE_LCTRL]) |
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181 { |
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182 // The "left-ctrl" key is down, while no tracker is present |
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183 |
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184 PointerEvent e; |
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185 e.AddPosition(viewport.GetPixelCenterCoordinates(event.button.x, event.button.y)); |
617 | 186 |
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187 ScenePoint2D p = e.GetMainPosition().Apply(scene.GetCanvasToSceneTransform()); |
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188 |
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189 char buf[64]; |
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190 sprintf(buf, "(%0.02f,%0.02f)", p.GetX(), p.GetY()); |
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191 |
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192 if (scene.HasLayer(LAYER_POSITION)) |
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193 { |
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194 TextSceneLayer& layer = |
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195 dynamic_cast<TextSceneLayer&>(scene.GetLayer(LAYER_POSITION)); |
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196 layer.SetText(buf); |
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197 layer.SetPosition(p.GetX(), p.GetY()); |
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198 } |
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199 else |
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200 { |
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201 std::auto_ptr<TextSceneLayer> |
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202 layer(new TextSceneLayer); |
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203 layer->SetColor(0, 255, 0); |
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204 layer->SetText(buf); |
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205 layer->SetBorder(20); |
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206 layer->SetAnchor(BitmapAnchor_BottomCenter); |
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207 layer->SetPosition(p.GetX(), p.GetY()); |
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208 scene.SetLayer(LAYER_POSITION, layer.release()); |
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209 } |
617 | 210 } |
211 else | |
212 { | |
213 scene.DeleteLayer(LAYER_POSITION); | |
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214 } |
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215 } |
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216 else if (event.type == SDL_MOUSEBUTTONDOWN) |
600 | 217 { |
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218 PointerEvent e; |
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219 e.AddPosition(viewport.GetPixelCenterCoordinates(event.button.x, event.button.y)); |
600 | 220 |
221 switch (event.button.button) | |
222 { | |
223 case SDL_BUTTON_MIDDLE: | |
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224 activeTracker = boost::make_shared<PanSceneTracker>(controller, e); |
600 | 225 break; |
226 | |
227 case SDL_BUTTON_RIGHT: | |
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228 activeTracker = boost::make_shared<ZoomSceneTracker> |
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229 (controller, e, viewport.GetCanvasHeight()); |
600 | 230 break; |
231 | |
232 case SDL_BUTTON_LEFT: | |
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233 activeTracker = boost::make_shared<RotateSceneTracker>(controller, e); |
600 | 234 break; |
235 | |
236 default: | |
237 break; | |
238 } | |
239 } | |
240 else if (event.type == SDL_KEYDOWN && | |
241 event.key.repeat == 0 /* Ignore key bounce */) | |
242 { | |
243 switch (event.key.keysym.sym) | |
244 { | |
245 case SDLK_s: | |
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246 controller->FitContent(viewport.GetCanvasWidth(), |
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247 viewport.GetCanvasHeight()); |
600 | 248 break; |
249 | |
250 case SDLK_c: | |
617 | 251 TakeScreenshot("screenshot.png", scene, |
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252 viewport.GetCanvasWidth(), |
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253 viewport.GetCanvasHeight()); |
600 | 254 break; |
255 | |
256 default: | |
257 break; | |
258 } | |
259 } | |
260 } | |
261 | |
262 | |
263 static void GLAPIENTRY | |
264 OpenGLMessageCallback(GLenum source, | |
265 GLenum type, | |
266 GLuint id, | |
267 GLenum severity, | |
268 GLsizei length, | |
269 const GLchar* message, | |
270 const void* userParam ) | |
271 { | |
272 if (severity != GL_DEBUG_SEVERITY_NOTIFICATION) | |
273 { | |
274 fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n", | |
275 ( type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : "" ), | |
276 type, severity, message ); | |
277 } | |
278 } | |
279 | |
280 | |
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281 void Run(OrthancStone::MessageBroker& broker, |
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282 OrthancStone::SdlViewport& viewport) |
600 | 283 { |
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284 using namespace OrthancStone; |
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285 |
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286 boost::shared_ptr<ViewportController> controller( |
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287 new ViewportController(boost::make_shared<UndoStack>(), broker, viewport)); |
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288 |
600 | 289 glEnable(GL_DEBUG_OUTPUT); |
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290 glDebugMessageCallback(OpenGLMessageCallback, 0); |
600 | 291 |
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292 boost::shared_ptr<IFlexiblePointerTracker> tracker; |
600 | 293 |
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294 bool firstShown = true; |
600 | 295 bool stop = false; |
296 while (!stop) | |
297 { | |
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298 viewport.Refresh(); |
600 | 299 |
300 SDL_Event event; | |
301 while (!stop && | |
302 SDL_PollEvent(&event)) | |
303 { | |
304 if (event.type == SDL_QUIT) | |
305 { | |
306 stop = true; | |
307 break; | |
308 } | |
309 else if (event.type == SDL_MOUSEMOTION) | |
310 { | |
700
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311 if (tracker) |
600 | 312 { |
700
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313 PointerEvent e; |
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314 e.AddPosition(viewport.GetPixelCenterCoordinates( |
700
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315 event.button.x, event.button.y)); |
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316 tracker->PointerMove(e); |
600 | 317 } |
318 } | |
319 else if (event.type == SDL_MOUSEBUTTONUP) | |
320 { | |
700
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321 if (tracker) |
600 | 322 { |
700
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323 PointerEvent e; |
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324 e.AddPosition(viewport.GetPixelCenterCoordinates( |
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325 event.button.x, event.button.y)); |
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326 tracker->PointerUp(e); |
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327 if(!tracker->IsAlive()) |
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328 tracker.reset(); |
600 | 329 } |
330 } | |
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331 else if (event.type == SDL_WINDOWEVENT) |
600 | 332 { |
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333 switch (event.window.event) |
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334 { |
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335 case SDL_WINDOWEVENT_SIZE_CHANGED: |
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336 tracker.reset(); |
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337 break; |
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338 |
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339 case SDL_WINDOWEVENT_SHOWN: |
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340 if (firstShown) |
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341 { |
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342 // Once the window is first shown, fit the content to its size |
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343 controller->FitContent(viewport.GetCanvasWidth(), viewport.GetCanvasHeight()); |
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344 firstShown = false; |
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345 } |
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346 |
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347 break; |
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348 |
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349 default: |
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350 break; |
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351 } |
600 | 352 } |
353 else if (event.type == SDL_KEYDOWN && | |
354 event.key.repeat == 0 /* Ignore key bounce */) | |
355 { | |
356 switch (event.key.keysym.sym) | |
357 { | |
358 case SDLK_f: | |
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359 viewport.GetContext().GetWindow().ToggleMaximize(); |
600 | 360 break; |
361 | |
362 case SDLK_q: | |
363 stop = true; | |
364 break; | |
365 | |
366 default: | |
367 break; | |
368 } | |
369 } | |
602
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370 |
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371 HandleApplicationEvent(event, controller, tracker); |
600 | 372 } |
373 | |
374 SDL_Delay(1); | |
375 } | |
376 } | |
377 | |
378 | |
607
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379 |
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380 |
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381 /** |
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382 * IMPORTANT: The full arguments to "main()" are needed for SDL on |
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383 * Windows. Otherwise, one gets the linking error "undefined reference |
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384 * to `SDL_main'". https://wiki.libsdl.org/FAQWindows |
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385 **/ |
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386 int main(int argc, char* argv[]) |
600 | 387 { |
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388 OrthancStone::StoneInitialize(); |
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389 Orthanc::Logging::EnableInfoLevel(true); |
600 | 390 |
391 try | |
392 { | |
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393 OrthancStone::SdlViewport viewport("Hello", 1024, 768); |
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394 PrepareScene(viewport.GetScene()); |
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395 |
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396 viewport.GetCompositor().SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, |
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397 FONT_SIZE, Orthanc::Encoding_Latin1); |
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398 |
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399 OrthancStone::MessageBroker broker; |
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400 Run(broker, viewport); |
600 | 401 } |
402 catch (Orthanc::OrthancException& e) | |
403 { | |
404 LOG(ERROR) << "EXCEPTION: " << e.What(); | |
405 } | |
406 | |
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407 OrthancStone::StoneFinalize(); |
600 | 408 |
409 return 0; | |
410 } |