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comparison Samples/MultiPlatform/BasicScene/BasicScene.cpp @ 916:a911f5bb48da am-dev

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MultiPlatform Basic Scene sample (so far: SDL + Qt)
author Alain Mazy <alain@mazy.be>
date Fri, 19 Jul 2019 15:06:36 +0200
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children 2d8ab34c8c91
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915:912cc77be3b4 916:a911f5bb48da
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 #include "BasicScene.h"
22
23 // From Stone
24 #include "Framework/Scene2D/Scene2D.h"
25 #include "Framework/Scene2D/ColorTextureSceneLayer.h"
26 #include "Framework/Scene2D/PolylineSceneLayer.h"
27 #include "Framework/Scene2D/TextSceneLayer.h"
28
29 #include "Framework/Scene2D/PanSceneTracker.h"
30 #include "Framework/Scene2D/ZoomSceneTracker.h"
31 #include "Framework/Scene2D/RotateSceneTracker.h"
32
33 #include "Framework/Scene2D/CairoCompositor.h"
34
35 // From Orthanc framework
36 #include <Core/Images/Image.h>
37 #include <Core/Images/ImageProcessing.h>
38 #include <Core/Images/PngWriter.h>
39
40 using namespace OrthancStone;
41
42 const unsigned int BASIC_SCENE_FONT_SIZE = 32;
43 const int BASIC_SCENE_LAYER_POSITION = 150;
44
45 void PrepareScene(Scene2D& scene)
46 {
47 //Scene2D& scene(*controller->GetScene());
48 // Texture of 2x2 size
49 {
50 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false);
51
52 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0));
53 p[0] = 255;
54 p[1] = 0;
55 p[2] = 0;
56
57 p[3] = 0;
58 p[4] = 255;
59 p[5] = 0;
60
61 p = reinterpret_cast<uint8_t*>(i.GetRow(1));
62 p[0] = 0;
63 p[1] = 0;
64 p[2] = 255;
65
66 p[3] = 255;
67 p[4] = 0;
68 p[5] = 0;
69
70 scene.SetLayer(12, new ColorTextureSceneLayer(i));
71
72 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i));
73 l->SetOrigin(-3, 2);
74 l->SetPixelSpacing(1.5, 1);
75 l->SetAngle(20.0 / 180.0 * 3.14);
76 scene.SetLayer(14, l.release());
77 }
78
79 // Texture of 1x1 size
80 {
81 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false);
82
83 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0));
84 p[0] = 255;
85 p[1] = 0;
86 p[2] = 0;
87
88 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i));
89 l->SetOrigin(-2, 1);
90 l->SetAngle(20.0 / 180.0 * 3.14);
91 scene.SetLayer(13, l.release());
92 }
93
94 // Some lines
95 {
96 std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer);
97
98 layer->SetThickness(1);
99
100 PolylineSceneLayer::Chain chain;
101 chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5));
102 chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5));
103 chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5));
104 chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5));
105 layer->AddChain(chain, true, 255, 0, 0);
106
107 chain.clear();
108 chain.push_back(ScenePoint2D(-5, -5));
109 chain.push_back(ScenePoint2D(5, -5));
110 chain.push_back(ScenePoint2D(5, 5));
111 chain.push_back(ScenePoint2D(-5, 5));
112 layer->AddChain(chain, true, 0, 255, 0);
113
114 double dy = 1.01;
115 chain.clear();
116 chain.push_back(ScenePoint2D(-4, -4));
117 chain.push_back(ScenePoint2D(4, -4 + dy));
118 chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy));
119 chain.push_back(ScenePoint2D(4, 2));
120 layer->AddChain(chain, false, 0, 0, 255);
121
122 // layer->SetColor(0,255, 255);
123 scene.SetLayer(50, layer.release());
124 }
125
126 // Some text
127 {
128 std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer);
129 layer->SetText("Hello");
130 scene.SetLayer(100, layer.release());
131 }
132 }
133
134 #if ORTHANC_SANDBOXED == 0
135 void TakeScreenshot(const std::string& target,
136 const OrthancStone::Scene2D& scene,
137 unsigned int canvasWidth,
138 unsigned int canvasHeight)
139 {
140 using namespace OrthancStone;
141 // Take a screenshot, then save it as PNG file
142 CairoCompositor compositor(scene, canvasWidth, canvasHeight);
143 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, BASIC_SCENE_FONT_SIZE, Orthanc::Encoding_Latin1);
144 compositor.Refresh();
145
146 Orthanc::ImageAccessor canvas;
147 compositor.GetCanvas().GetReadOnlyAccessor(canvas);
148
149 Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false);
150 Orthanc::ImageProcessing::Convert(png, canvas);
151
152 Orthanc::PngWriter writer;
153 writer.WriteToFile(target, png);
154 }
155 #endif
156
157 void ShowCursorInfo(Scene2D& scene, const PointerEvent& pointerEvent)
158 {
159 ScenePoint2D p = pointerEvent.GetMainPosition().Apply(scene.GetCanvasToSceneTransform());
160
161 char buf[64];
162 sprintf(buf, "(%0.02f,%0.02f)", p.GetX(), p.GetY());
163
164 if (scene.HasLayer(BASIC_SCENE_LAYER_POSITION))
165 {
166 TextSceneLayer& layer =
167 dynamic_cast<TextSceneLayer&>(scene.GetLayer(BASIC_SCENE_LAYER_POSITION));
168 layer.SetText(buf);
169 layer.SetPosition(p.GetX(), p.GetY());
170 }
171 else
172 {
173 std::auto_ptr<TextSceneLayer>
174 layer(new TextSceneLayer);
175 layer->SetColor(0, 255, 0);
176 layer->SetText(buf);
177 layer->SetBorder(20);
178 layer->SetAnchor(BitmapAnchor_BottomCenter);
179 layer->SetPosition(p.GetX(), p.GetY());
180 scene.SetLayer(BASIC_SCENE_LAYER_POSITION, layer.release());
181 }
182 }
183
184
185
186 bool BasicScene2DInteractor::OnMouseEvent(const GuiAdapterMouseEvent& event, const PointerEvent& pointerEvent)
187 {
188 if (currentTracker_.get() != NULL)
189 {
190 switch (event.type)
191 {
192 case GUIADAPTER_EVENT_MOUSEUP:
193 {
194 currentTracker_->PointerUp(pointerEvent);
195 if (!currentTracker_->IsAlive())
196 {
197 currentTracker_.reset();
198 }
199 };break;
200 case GUIADAPTER_EVENT_MOUSEMOVE:
201 {
202 currentTracker_->PointerMove(pointerEvent);
203 };break;
204 default:
205 return false;
206 }
207 return true;
208 }
209 else if (event.type == GUIADAPTER_EVENT_MOUSEDOWN)
210 {
211 if (event.button == GUIADAPTER_MOUSEBUTTON_LEFT)
212 {
213 currentTracker_.reset(new RotateSceneTracker(viewportController_, pointerEvent));
214 }
215 else if (event.button == GUIADAPTER_MOUSEBUTTON_MIDDLE)
216 {
217 currentTracker_.reset(new PanSceneTracker(viewportController_, pointerEvent));
218 }
219 else if (event.button == GUIADAPTER_MOUSEBUTTON_RIGHT)
220 {
221 currentTracker_.reset(new ZoomSceneTracker(viewportController_, pointerEvent, viewportController_->GetViewport().GetCanvasHeight()));
222 }
223 }
224 else if (event.type == GUIADAPTER_EVENT_MOUSEMOVE)
225 {
226 if (showCursorInfo_)
227 {
228 Scene2D& scene(viewportController_->GetScene());
229 ShowCursorInfo(scene, pointerEvent);
230 }
231 return true;
232 }
233 return false;
234 }
235
236 bool BasicScene2DInteractor::OnKeyboardEvent(const GuiAdapterKeyboardEvent& guiEvent)
237 {
238 if (guiEvent.type == GUIADAPTER_EVENT_KEYDOWN)
239 {
240 switch (guiEvent.sym[0])
241 {
242 case 's':
243 {
244 //viewportController_->FitContent(viewportController_->GetViewport().GetCanvasWidth(), viewportController_->GetViewport().GetCanvasHeight());
245 viewportController_->FitContent();
246 return true;
247 };
248 #if ORTHANC_SANDBOXED == 0
249 case 'c':
250 {
251 Scene2D& scene(viewportController_->GetScene());
252 TakeScreenshot("screenshot.png", scene, viewportController_->GetViewport().GetCanvasWidth(), viewportController_->GetViewport().GetCanvasHeight());
253 return true;
254 }
255 #endif
256 case 'd':
257 {
258 showCursorInfo_ = !showCursorInfo_;
259 if (!showCursorInfo_)
260 {
261 Scene2D& scene(viewportController_->GetScene());
262 scene.DeleteLayer(BASIC_SCENE_LAYER_POSITION);
263 }
264
265 return true;
266 }
267 }
268 }
269 return false;
270 }
271
272 bool BasicScene2DInteractor::OnWheelEvent(const GuiAdapterWheelEvent& guiEvent)
273 {
274 return false;
275 }