Mercurial > hg > orthanc-stone
annotate Samples/Sdl/BasicScene.cpp @ 1113:3924ddbbadda
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| author | Alain Mazy <alain@mazy.be> |
|---|---|
| date | Mon, 04 Nov 2019 12:47:13 +0100 |
| parents | 64e5f3ff6360 |
| children | 2d8ab34c8c91 |
| rev | line source |
|---|---|
| 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 #define OPENGL_ENABLED 0 |
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52 |
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53 void PrepareScene(OrthancStone::Scene2D& scene) |
| 600 | 54 { |
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55 using namespace OrthancStone; |
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56 |
| 600 | 57 // Texture of 2x2 size |
| 58 { | |
| 59 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false); | |
| 60 | |
| 61 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
| 62 p[0] = 255; | |
| 63 p[1] = 0; | |
| 64 p[2] = 0; | |
| 65 | |
| 66 p[3] = 0; | |
| 67 p[4] = 255; | |
| 68 p[5] = 0; | |
| 69 | |
| 70 p = reinterpret_cast<uint8_t*>(i.GetRow(1)); | |
| 71 p[0] = 0; | |
| 72 p[1] = 0; | |
| 73 p[2] = 255; | |
| 74 | |
| 75 p[3] = 255; | |
| 76 p[4] = 0; | |
| 77 p[5] = 0; | |
| 78 | |
| 79 scene.SetLayer(12, new ColorTextureSceneLayer(i)); | |
| 80 | |
| 81 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
| 82 l->SetOrigin(-3, 2); | |
| 83 l->SetPixelSpacing(1.5, 1); | |
| 84 l->SetAngle(20.0 / 180.0 * M_PI); | |
| 85 scene.SetLayer(14, l.release()); | |
| 86 } | |
| 87 | |
| 88 // Texture of 1x1 size | |
| 89 { | |
| 90 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false); | |
| 91 | |
| 92 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
| 93 p[0] = 255; | |
| 94 p[1] = 0; | |
| 95 p[2] = 0; | |
| 96 | |
| 97 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
| 98 l->SetOrigin(-2, 1); | |
| 99 l->SetAngle(20.0 / 180.0 * M_PI); | |
| 100 scene.SetLayer(13, l.release()); | |
| 101 } | |
| 102 | |
| 103 // Some lines | |
| 104 { | |
| 105 std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer); | |
| 106 | |
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107 layer->SetThickness(10); |
| 600 | 108 |
| 109 PolylineSceneLayer::Chain chain; | |
| 110 chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5)); | |
| 111 chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5)); | |
| 112 chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5)); | |
| 113 chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5)); | |
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114 layer->AddChain(chain, true, 255, 0, 0); |
| 600 | 115 |
| 116 chain.clear(); | |
| 117 chain.push_back(ScenePoint2D(-5, -5)); | |
| 118 chain.push_back(ScenePoint2D(5, -5)); | |
| 119 chain.push_back(ScenePoint2D(5, 5)); | |
| 120 chain.push_back(ScenePoint2D(-5, 5)); | |
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121 layer->AddChain(chain, true, 0, 255, 0); |
| 600 | 122 |
| 123 double dy = 1.01; | |
| 124 chain.clear(); | |
| 125 chain.push_back(ScenePoint2D(-4, -4)); | |
| 126 chain.push_back(ScenePoint2D(4, -4 + dy)); | |
| 127 chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy)); | |
| 128 chain.push_back(ScenePoint2D(4, 2)); | |
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129 layer->AddChain(chain, false, 0, 0, 255); |
| 600 | 130 |
| 131 scene.SetLayer(50, layer.release()); | |
| 132 } | |
| 133 | |
| 134 // Some text | |
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135 { |
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136 std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer); |
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137 layer->SetText("Hello"); |
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138 scene.SetLayer(100, layer.release()); |
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139 } |
| 600 | 140 } |
| 141 | |
| 142 | |
| 143 void TakeScreenshot(const std::string& target, | |
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144 const OrthancStone::Scene2D& scene, |
| 600 | 145 unsigned int canvasWidth, |
| 146 unsigned int canvasHeight) | |
| 147 { | |
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148 using namespace OrthancStone; |
| 600 | 149 // Take a screenshot, then save it as PNG file |
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150 CairoCompositor compositor(scene, canvasWidth, canvasHeight); |
| 600 | 151 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE, Orthanc::Encoding_Latin1); |
| 152 compositor.Refresh(); | |
| 153 | |
| 154 Orthanc::ImageAccessor canvas; | |
| 155 compositor.GetCanvas().GetReadOnlyAccessor(canvas); | |
| 156 | |
| 157 Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false); | |
| 158 Orthanc::ImageProcessing::Convert(png, canvas); | |
| 159 | |
| 160 Orthanc::PngWriter writer; | |
| 161 writer.WriteToFile(target, png); | |
| 162 } | |
| 163 | |
| 164 | |
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165 void HandleApplicationEvent(const SDL_Event& event, |
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166 boost::shared_ptr<OrthancStone::ViewportController>& controller, |
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167 boost::shared_ptr<OrthancStone::IFlexiblePointerTracker>& activeTracker) |
| 600 | 168 { |
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169 using namespace OrthancStone; |
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170 |
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171 Scene2D& scene = controller->GetScene(); |
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172 IViewport& viewport = controller->GetViewport(); |
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173 |
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174 if (event.type == SDL_MOUSEMOTION) |
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175 { |
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176 int scancodeCount = 0; |
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177 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount); |
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178 |
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179 if (activeTracker.get() == NULL && |
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180 SDL_SCANCODE_LCTRL < scancodeCount && |
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181 keyboardState[SDL_SCANCODE_LCTRL]) |
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182 { |
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183 // The "left-ctrl" key is down, while no tracker is present |
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184 |
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185 PointerEvent e; |
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186 e.AddPosition(viewport.GetPixelCenterCoordinates(event.button.x, event.button.y)); |
| 617 | 187 |
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188 ScenePoint2D p = e.GetMainPosition().Apply(scene.GetCanvasToSceneTransform()); |
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189 |
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190 char buf[64]; |
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191 sprintf(buf, "(%0.02f,%0.02f)", p.GetX(), p.GetY()); |
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192 |
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193 if (scene.HasLayer(LAYER_POSITION)) |
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194 { |
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195 TextSceneLayer& layer = |
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196 dynamic_cast<TextSceneLayer&>(scene.GetLayer(LAYER_POSITION)); |
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197 layer.SetText(buf); |
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198 layer.SetPosition(p.GetX(), p.GetY()); |
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199 } |
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200 else |
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201 { |
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202 std::auto_ptr<TextSceneLayer> |
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203 layer(new TextSceneLayer); |
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204 layer->SetColor(0, 255, 0); |
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205 layer->SetText(buf); |
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206 layer->SetBorder(20); |
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207 layer->SetAnchor(BitmapAnchor_BottomCenter); |
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208 layer->SetPosition(p.GetX(), p.GetY()); |
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209 scene.SetLayer(LAYER_POSITION, layer.release()); |
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210 } |
| 617 | 211 } |
| 212 else | |
| 213 { | |
| 214 scene.DeleteLayer(LAYER_POSITION); | |
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215 } |
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216 } |
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217 else if (event.type == SDL_MOUSEBUTTONDOWN) |
| 600 | 218 { |
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219 PointerEvent e; |
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220 e.AddPosition(viewport.GetPixelCenterCoordinates(event.button.x, event.button.y)); |
| 600 | 221 |
| 222 switch (event.button.button) | |
| 223 { | |
| 224 case SDL_BUTTON_MIDDLE: | |
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225 activeTracker = boost::make_shared<PanSceneTracker>(controller, e); |
| 600 | 226 break; |
| 227 | |
| 228 case SDL_BUTTON_RIGHT: | |
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229 activeTracker = boost::make_shared<ZoomSceneTracker> |
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230 (controller, e, viewport.GetCanvasHeight()); |
| 600 | 231 break; |
| 232 | |
| 233 case SDL_BUTTON_LEFT: | |
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234 activeTracker = boost::make_shared<RotateSceneTracker>(controller, e); |
| 600 | 235 break; |
| 236 | |
| 237 default: | |
| 238 break; | |
| 239 } | |
| 240 } | |
| 241 else if (event.type == SDL_KEYDOWN && | |
| 242 event.key.repeat == 0 /* Ignore key bounce */) | |
| 243 { | |
| 244 switch (event.key.keysym.sym) | |
| 245 { | |
| 246 case SDLK_s: | |
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247 controller->FitContent(viewport.GetCanvasWidth(), |
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248 viewport.GetCanvasHeight()); |
| 600 | 249 break; |
| 250 | |
| 251 case SDLK_c: | |
| 617 | 252 TakeScreenshot("screenshot.png", scene, |
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253 viewport.GetCanvasWidth(), |
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254 viewport.GetCanvasHeight()); |
| 600 | 255 break; |
| 256 | |
| 257 default: | |
| 258 break; | |
| 259 } | |
| 260 } | |
| 261 } | |
| 262 | |
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263 #if OPENGL_ENABLED==1 |
| 600 | 264 static void GLAPIENTRY |
| 265 OpenGLMessageCallback(GLenum source, | |
| 266 GLenum type, | |
| 267 GLuint id, | |
| 268 GLenum severity, | |
| 269 GLsizei length, | |
| 270 const GLchar* message, | |
| 271 const void* userParam ) | |
| 272 { | |
| 273 if (severity != GL_DEBUG_SEVERITY_NOTIFICATION) | |
| 274 { | |
| 275 fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n", | |
| 276 ( type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : "" ), | |
| 277 type, severity, message ); | |
| 278 } | |
| 279 } | |
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280 #endif |
| 600 | 281 |
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282 void Run(OrthancStone::MessageBroker& broker, |
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283 OrthancStone::SdlViewport& viewport) |
| 600 | 284 { |
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285 using namespace OrthancStone; |
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286 |
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287 boost::shared_ptr<ViewportController> controller( |
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288 new ViewportController(boost::make_shared<UndoStack>(), broker, viewport)); |
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289 |
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290 #if OPENGL_ENABLED==1 |
| 600 | 291 glEnable(GL_DEBUG_OUTPUT); |
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292 glDebugMessageCallback(OpenGLMessageCallback, 0); |
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293 #endif |
| 600 | 294 |
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295 boost::shared_ptr<IFlexiblePointerTracker> tracker; |
| 600 | 296 |
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297 bool firstShown = true; |
| 600 | 298 bool stop = false; |
| 299 while (!stop) | |
| 300 { | |
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301 viewport.Refresh(); |
| 600 | 302 |
| 303 SDL_Event event; | |
| 304 while (!stop && | |
| 305 SDL_PollEvent(&event)) | |
| 306 { | |
| 307 if (event.type == SDL_QUIT) | |
| 308 { | |
| 309 stop = true; | |
| 310 break; | |
| 311 } | |
| 312 else if (event.type == SDL_MOUSEMOTION) | |
| 313 { | |
|
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314 if (tracker) |
| 600 | 315 { |
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316 PointerEvent e; |
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317 e.AddPosition(viewport.GetPixelCenterCoordinates( |
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318 event.button.x, event.button.y)); |
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319 tracker->PointerMove(e); |
| 600 | 320 } |
| 321 } | |
| 322 else if (event.type == SDL_MOUSEBUTTONUP) | |
| 323 { | |
|
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324 if (tracker) |
| 600 | 325 { |
|
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326 PointerEvent e; |
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327 e.AddPosition(viewport.GetPixelCenterCoordinates( |
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328 event.button.x, event.button.y)); |
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329 tracker->PointerUp(e); |
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330 if(!tracker->IsAlive()) |
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331 tracker.reset(); |
| 600 | 332 } |
| 333 } | |
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334 else if (event.type == SDL_WINDOWEVENT) |
| 600 | 335 { |
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336 switch (event.window.event) |
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337 { |
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338 case SDL_WINDOWEVENT_SIZE_CHANGED: |
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339 tracker.reset(); |
| 909 | 340 viewport.UpdateSize(event.window.data1, event.window.data2); |
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341 break; |
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342 |
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343 case SDL_WINDOWEVENT_SHOWN: |
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344 if (firstShown) |
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345 { |
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346 // Once the window is first shown, fit the content to its size |
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347 controller->FitContent(viewport.GetCanvasWidth(), viewport.GetCanvasHeight()); |
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348 firstShown = false; |
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349 } |
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350 |
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351 break; |
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352 |
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353 default: |
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354 break; |
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355 } |
| 600 | 356 } |
| 357 else if (event.type == SDL_KEYDOWN && | |
| 358 event.key.repeat == 0 /* Ignore key bounce */) | |
| 359 { | |
| 360 switch (event.key.keysym.sym) | |
| 361 { | |
| 362 case SDLK_f: | |
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363 viewport.GetWindow().ToggleMaximize(); |
| 600 | 364 break; |
| 365 | |
| 366 case SDLK_q: | |
| 367 stop = true; | |
| 368 break; | |
| 369 | |
| 370 default: | |
| 371 break; | |
| 372 } | |
| 373 } | |
|
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374 |
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375 HandleApplicationEvent(event, controller, tracker); |
| 600 | 376 } |
| 377 | |
| 378 SDL_Delay(1); | |
| 379 } | |
| 380 } | |
| 381 | |
| 382 | |
|
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383 |
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384 |
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385 /** |
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386 * IMPORTANT: The full arguments to "main()" are needed for SDL on |
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387 * Windows. Otherwise, one gets the linking error "undefined reference |
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388 * to `SDL_main'". https://wiki.libsdl.org/FAQWindows |
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389 **/ |
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390 int main(int argc, char* argv[]) |
| 600 | 391 { |
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392 OrthancStone::StoneInitialize(); |
|
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393 Orthanc::Logging::EnableInfoLevel(true); |
| 600 | 394 |
| 395 try | |
| 396 { | |
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397 #if OPENGL_ENABLED==1 |
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398 OrthancStone::SdlOpenGLViewport viewport("Hello", 1024, 768); |
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399 #else |
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400 OrthancStone::SdlCairoViewport viewport("Hello", 1024, 768); |
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401 #endif |
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402 PrepareScene(viewport.GetScene()); |
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403 |
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404 viewport.GetCompositor().SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, |
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405 FONT_SIZE, Orthanc::Encoding_Latin1); |
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406 |
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407 OrthancStone::MessageBroker broker; |
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408 Run(broker, viewport); |
| 600 | 409 } |
| 410 catch (Orthanc::OrthancException& e) | |
| 411 { | |
| 412 LOG(ERROR) << "EXCEPTION: " << e.What(); | |
| 413 } | |
| 414 | |
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415 OrthancStone::StoneFinalize(); |
| 600 | 416 |
| 417 return 0; | |
| 418 } |