Mercurial > hg > orthanc-stone

comparison Samples/Sdl/BasicScene.cpp @ 885:56e4e9281076 am-dev

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
sharing code between Qt/SDL BasiceScene sample
author Alain Mazy <alain@mazy.be>
date Tue, 09 Jul 2019 16:44:25 +0200
parents 31319fe867b9
children 9c2f6d6b9f4a
comparison
equal deleted inserted replaced
884:aad5ccf1be10 885:56e4e9281076
19 **/ 19 **/
20 20
21 21
22 // From Stone 22 // From Stone
23 #include "../../Applications/Sdl/SdlOpenGLWindow.h" 23 #include "../../Applications/Sdl/SdlOpenGLWindow.h"
24 #include "../../Framework/Scene2D/CairoCompositor.h"
25 #include "../../Framework/Scene2D/ColorTextureSceneLayer.h"
26 #include "../../Framework/Scene2D/OpenGLCompositor.h" 24 #include "../../Framework/Scene2D/OpenGLCompositor.h"
27 #include "../../Framework/Scene2D/PanSceneTracker.h"
28 #include "../../Framework/Scene2D/RotateSceneTracker.h"
29 #include "../../Framework/Scene2D/Scene2D.h"
30 #include "../../Framework/Scene2D/ZoomSceneTracker.h"
31 #include "../../Framework/Scene2DViewport/ViewportController.h"
32 #include "../../Framework/Scene2DViewport/UndoStack.h" 25 #include "../../Framework/Scene2DViewport/UndoStack.h"
33
34 #include "../../Framework/StoneInitialization.h" 26 #include "../../Framework/StoneInitialization.h"
35 #include "../../Framework/Messages/MessageBroker.h" 27 #include "../../Framework/Messages/MessageBroker.h"
36 28
37 // From Orthanc framework 29 // From Orthanc framework
38 #include <Core/Logging.h> 30 #include <Core/Logging.h>
39 #include <Core/OrthancException.h> 31 #include <Core/OrthancException.h>
40 #include <Core/Images/Image.h>
41 #include <Core/Images/ImageProcessing.h>
42 #include <Core/Images/PngWriter.h>
43 32
44 #include <boost/make_shared.hpp> 33 #include <boost/make_shared.hpp>
45 #include <boost/ref.hpp> 34 #include <boost/ref.hpp>
46 35
47 #include <SDL.h> 36 #include <SDL.h>
48 #include <stdio.h> 37 #include <stdio.h>
49 38
50 static const unsigned int FONT_SIZE = 32; 39
51 static const int LAYER_POSITION = 150; 40 #include "../Shared/SharedBasicScene.h"
52 41
53 void PrepareScene(boost::shared_ptr<OrthancStone::ViewportController> controller) 42 using namespace OrthancStone;
43
44 boost::shared_ptr<BasicScene2DInteractor> interactor;
45
46 void HandleApplicationEvent(boost::shared_ptr<OrthancStone::ViewportController> controller,
47 const OrthancStone::OpenGLCompositor& compositor,
48 const SDL_Event& event)
54 { 49 {
55 using namespace OrthancStone; 50 using namespace OrthancStone;
56 Scene2D& scene(*controller->GetScene()); 51 Scene2D& scene(*controller->GetScene());
57 // Texture of 2x2 size 52 if (event.type == SDL_MOUSEBUTTONDOWN || event.type == SDL_MOUSEBUTTONUP || event.type == SDL_MOUSEMOTION)
58 { 53 {
59 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false); 54 // TODO: this code is copy/pasted from GuiAdapter::Run() -> find the right place
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
107 layer->SetThickness(10);
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));
114 layer->AddChain(chain, true, 255, 0, 0);
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));
121 layer->AddChain(chain, true, 0, 255, 0);
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));
129 layer->AddChain(chain, false, 0, 0, 255);
130
131 scene.SetLayer(50, layer.release());
132 }
133
134 // Some text
135 {
136 std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer);
137 layer->SetText("Hello");
138 scene.SetLayer(100, layer.release());
139 }
140 }
141
142
143 void TakeScreenshot(const std::string& target,
144 const OrthancStone::Scene2D& scene,
145 unsigned int canvasWidth,
146 unsigned int canvasHeight)
147 {
148 using namespace OrthancStone;
149 // Take a screenshot, then save it as PNG file
150 CairoCompositor compositor(scene, canvasWidth, canvasHeight);
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
165 void HandleApplicationEvent(boost::shared_ptr<OrthancStone::ViewportController> controller,
166 const OrthancStone::OpenGLCompositor& compositor,
167 const SDL_Event& event,
168 boost::shared_ptr<OrthancStone::IFlexiblePointerTracker>& activeTracker)
169 {
170 using namespace OrthancStone;
171 Scene2D& scene(*controller->GetScene());
172 if (event.type == SDL_MOUSEMOTION)
173 {
174 int scancodeCount = 0; 55 int scancodeCount = 0;
175 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount); 56 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount);
176 57 bool ctrlPressed(false);
177 if (activeTracker.get() == NULL && 58 bool shiftPressed(false);
178 SDL_SCANCODE_LCTRL < scancodeCount && 59 bool altPressed(false);
179 keyboardState[SDL_SCANCODE_LCTRL]) 60
180 { 61 if (SDL_SCANCODE_LCTRL < scancodeCount && keyboardState[SDL_SCANCODE_LCTRL])
181 // The "left-ctrl" key is down, while no tracker is present 62 ctrlPressed = true;
182 63 if (SDL_SCANCODE_RCTRL < scancodeCount && keyboardState[SDL_SCANCODE_RCTRL])
183 PointerEvent e; 64 ctrlPressed = true;
184 e.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y)); 65 if (SDL_SCANCODE_LSHIFT < scancodeCount && keyboardState[SDL_SCANCODE_LSHIFT])
185 66 shiftPressed = true;
186 ScenePoint2D p = e.GetMainPosition().Apply(scene.GetCanvasToSceneTransform()); 67 if (SDL_SCANCODE_RSHIFT < scancodeCount && keyboardState[SDL_SCANCODE_RSHIFT])
187 68 shiftPressed = true;
188 char buf[64]; 69 if (SDL_SCANCODE_LALT < scancodeCount && keyboardState[SDL_SCANCODE_LALT])
189 sprintf(buf, "(%0.02f,%0.02f)", p.GetX(), p.GetY()); 70 altPressed = true;
190 71
191 if (scene.HasLayer(LAYER_POSITION)) 72 GuiAdapterMouseEvent guiEvent;
192 { 73 ConvertFromPlatform(guiEvent, ctrlPressed, shiftPressed, altPressed, event);
193 TextSceneLayer& layer = 74 PointerEvent pointerEvent;
194 dynamic_cast<TextSceneLayer&>(scene.GetLayer(LAYER_POSITION)); 75 pointerEvent.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y));
195 layer.SetText(buf); 76
196 layer.SetPosition(p.GetX(), p.GetY()); 77 interactor->OnMouseEvent(guiEvent, pointerEvent);
197 } 78 return;
198 else 79 }
199 { 80 else if ((event.type == SDL_KEYDOWN || event.type == SDL_KEYUP) && event.key.repeat == 0 /* Ignore key bounce */)
200 std::auto_ptr<TextSceneLayer> 81 {
201 layer(new TextSceneLayer); 82 GuiAdapterKeyboardEvent guiEvent;
202 layer->SetColor(0, 255, 0); 83 ConvertFromPlatform(guiEvent, event);
203 layer->SetText(buf); 84
204 layer->SetBorder(20); 85 interactor->OnKeyboardEvent(guiEvent);
205 layer->SetAnchor(BitmapAnchor_BottomCenter); 86 }
206 layer->SetPosition(p.GetX(), p.GetY()); 87
207 scene.SetLayer(LAYER_POSITION, layer.release());
208 }
209 }
210 else
211 {
212 scene.DeleteLayer(LAYER_POSITION);
213 }
214 }
215 else if (event.type == SDL_MOUSEBUTTONDOWN)
216 {
217 PointerEvent e;
218 e.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y));
219
220 switch (event.button.button)
221 {
222 case SDL_BUTTON_MIDDLE:
223 activeTracker = boost::make_shared<PanSceneTracker>(controller, e);
224 break;
225
226 case SDL_BUTTON_RIGHT:
227 activeTracker = boost::make_shared<ZoomSceneTracker>(controller,
228 e, compositor.GetHeight());
229 break;
230
231 case SDL_BUTTON_LEFT:
232 activeTracker = boost::make_shared<RotateSceneTracker>(controller, e);
233 break;
234
235 default:
236 break;
237 }
238 }
239 else if (event.type == SDL_KEYDOWN &&
240 event.key.repeat == 0 /* Ignore key bounce */)
241 {
242 switch (event.key.keysym.sym)
243 {
244 case SDLK_s:
245 controller->FitContent(compositor.GetWidth(),
246 compositor.GetHeight());
247 break;
248
249 case SDLK_c:
250 TakeScreenshot("screenshot.png", scene,
251 compositor.GetWidth(),
252 compositor.GetHeight());
253 break;
254
255 default:
256 break;
257 }
258 }
259 } 88 }
260 89
261 90
262 static void GLAPIENTRY 91 static void GLAPIENTRY
263 OpenGLMessageCallback(GLenum source, 92 OpenGLMessageCallback(GLenum source,
277 } 106 }
278 107
279 108
280 void Run(boost::shared_ptr<OrthancStone::ViewportController> controller) 109 void Run(boost::shared_ptr<OrthancStone::ViewportController> controller)
281 { 110 {
282 using namespace OrthancStone;
283 SdlOpenGLWindow window("Hello", 1024, 768); 111 SdlOpenGLWindow window("Hello", 1024, 768);
284 112
285 controller->FitContent(window.GetCanvasWidth(), window.GetCanvasHeight()); 113 controller->FitContent(window.GetCanvasWidth(), window.GetCanvasHeight());
286 114
287 glEnable(GL_DEBUG_OUTPUT); 115 glEnable(GL_DEBUG_OUTPUT);
288 glDebugMessageCallback(OpenGLMessageCallback, 0); 116 glDebugMessageCallback(OpenGLMessageCallback, 0);
289 117
290 OpenGLCompositor compositor(window, *controller->GetScene()); 118 boost::shared_ptr<OpenGLCompositor> compositor(new OpenGLCompositor(window, *controller->GetScene()));
291 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, 119 compositor->SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT,
292 FONT_SIZE, Orthanc::Encoding_Latin1); 120 BASIC_SCENE_FONT_SIZE, Orthanc::Encoding_Latin1);
293 121 interactor->SetCompositor(compositor);
294 boost::shared_ptr<IFlexiblePointerTracker> tracker;
295 122
296 bool stop = false; 123 bool stop = false;
297 while (!stop) 124 while (!stop)
298 { 125 {
299 compositor.Refresh(); 126 compositor->Refresh();
300 127
301 SDL_Event event; 128 SDL_Event event;
302 while (!stop && 129 while (!stop &&
303 SDL_PollEvent(&event)) 130 SDL_PollEvent(&event))
304 { 131 {
305 if (event.type == SDL_QUIT) 132 if (event.type == SDL_QUIT)
306 { 133 {
307 stop = true; 134 stop = true;
308 break; 135 break;
309 } 136 }
310 else if (event.type == SDL_MOUSEMOTION)
311 {
312 if (tracker)
313 {
314 PointerEvent e;
315 e.AddPosition(compositor.GetPixelCenterCoordinates(
316 event.button.x, event.button.y));
317 tracker->PointerMove(e);
318 }
319 }
320 else if (event.type == SDL_MOUSEBUTTONUP)
321 {
322 if (tracker)
323 {
324 PointerEvent e;
325 e.AddPosition(compositor.GetPixelCenterCoordinates(
326 event.button.x, event.button.y));
327 tracker->PointerUp(e);
328 if(!tracker->IsAlive())
329 tracker.reset();
330 }
331 }
332 else if (event.type == SDL_WINDOWEVENT && 137 else if (event.type == SDL_WINDOWEVENT &&
333 event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED) 138 event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED)
334 { 139 {
335 tracker.reset(); 140 compositor->UpdateSize();
336 compositor.UpdateSize();
337 } 141 }
338 else if (event.type == SDL_KEYDOWN && 142 else if (event.type == SDL_KEYDOWN &&
339 event.key.repeat == 0 /* Ignore key bounce */) 143 event.key.repeat == 0 /* Ignore key bounce */)
340 { 144 {
341 switch (event.key.keysym.sym) 145 switch (event.key.keysym.sym)
351 default: 155 default:
352 break; 156 break;
353 } 157 }
354 } 158 }
355 159
356 HandleApplicationEvent(controller, compositor, event, tracker); 160 HandleApplicationEvent(controller, *compositor, event);
357 } 161 }
358 162
359 SDL_Delay(1); 163 SDL_Delay(1);
360 } 164 }
165 interactor.reset();
361 } 166 }
362 167
363 168
364 169
365 170
378 { 183 {
379 MessageBroker broker; 184 MessageBroker broker;
380 boost::shared_ptr<UndoStack> undoStack(new UndoStack); 185 boost::shared_ptr<UndoStack> undoStack(new UndoStack);
381 boost::shared_ptr<ViewportController> controller = boost::make_shared<ViewportController>( 186 boost::shared_ptr<ViewportController> controller = boost::make_shared<ViewportController>(
382 undoStack, boost::ref(broker)); 187 undoStack, boost::ref(broker));
188 interactor.reset(new BasicScene2DInteractor(controller));
383 PrepareScene(controller); 189 PrepareScene(controller);
384 Run(controller); 190 Run(controller);
385 } 191 }
386 catch (Orthanc::OrthancException& e) 192 catch (Orthanc::OrthancException& e)
387 { 193 {