--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Samples/MultiPlatform/BasicScene/BasicScene.cpp	Fri Jul 19 15:06:36 2019 +0200
@@ -0,0 +1,275 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2019 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#include "BasicScene.h"
+
+// From Stone
+#include "Framework/Scene2D/Scene2D.h"
+#include "Framework/Scene2D/ColorTextureSceneLayer.h"
+#include "Framework/Scene2D/PolylineSceneLayer.h"
+#include "Framework/Scene2D/TextSceneLayer.h"
+
+#include "Framework/Scene2D/PanSceneTracker.h"
+#include "Framework/Scene2D/ZoomSceneTracker.h"
+#include "Framework/Scene2D/RotateSceneTracker.h"
+
+#include "Framework/Scene2D/CairoCompositor.h"
+
+// From Orthanc framework
+#include <Core/Images/Image.h>
+#include <Core/Images/ImageProcessing.h>
+#include <Core/Images/PngWriter.h>
+
+using namespace OrthancStone;
+
+const unsigned int BASIC_SCENE_FONT_SIZE = 32;
+const int BASIC_SCENE_LAYER_POSITION = 150;
+
+void PrepareScene(Scene2D& scene)
+{
+  //Scene2D& scene(*controller->GetScene());
+  // Texture of 2x2 size
+  {
+    Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false);
+
+    uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0));
+    p[0] = 255;
+    p[1] = 0;
+    p[2] = 0;
+
+    p[3] = 0;
+    p[4] = 255;
+    p[5] = 0;
+
+    p = reinterpret_cast<uint8_t*>(i.GetRow(1));
+    p[0] = 0;
+    p[1] = 0;
+    p[2] = 255;
+
+    p[3] = 255;
+    p[4] = 0;
+    p[5] = 0;
+
+    scene.SetLayer(12, new ColorTextureSceneLayer(i));
+
+    std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i));
+    l->SetOrigin(-3, 2);
+    l->SetPixelSpacing(1.5, 1);
+    l->SetAngle(20.0 / 180.0 * 3.14);
+    scene.SetLayer(14, l.release());
+  }
+
+  // Texture of 1x1 size
+  {
+    Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false);
+
+    uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0));
+    p[0] = 255;
+    p[1] = 0;
+    p[2] = 0;
+
+    std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i));
+    l->SetOrigin(-2, 1);
+    l->SetAngle(20.0 / 180.0 * 3.14);
+    scene.SetLayer(13, l.release());
+  }
+
+  // Some lines
+  {
+    std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer);
+
+    layer->SetThickness(1);
+
+    PolylineSceneLayer::Chain chain;
+    chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5));
+    chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5));
+    chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5));
+    chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5));
+    layer->AddChain(chain, true, 255, 0, 0);
+
+    chain.clear();
+    chain.push_back(ScenePoint2D(-5, -5));
+    chain.push_back(ScenePoint2D(5, -5));
+    chain.push_back(ScenePoint2D(5, 5));
+    chain.push_back(ScenePoint2D(-5, 5));
+    layer->AddChain(chain, true, 0, 255, 0);
+
+    double dy = 1.01;
+    chain.clear();
+    chain.push_back(ScenePoint2D(-4, -4));
+    chain.push_back(ScenePoint2D(4, -4 + dy));
+    chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy));
+    chain.push_back(ScenePoint2D(4, 2));
+    layer->AddChain(chain, false, 0, 0, 255);
+
+    //    layer->SetColor(0,255, 255);
+    scene.SetLayer(50, layer.release());
+  }
+
+  // Some text
+  {
+    std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer);
+    layer->SetText("Hello");
+    scene.SetLayer(100, layer.release());
+  }
+}
+
+#if ORTHANC_SANDBOXED == 0
+void TakeScreenshot(const std::string& target,
+                    const OrthancStone::Scene2D& scene,
+                    unsigned int canvasWidth,
+                    unsigned int canvasHeight)
+{
+  using namespace OrthancStone;
+  // Take a screenshot, then save it as PNG file
+  CairoCompositor compositor(scene, canvasWidth, canvasHeight);
+  compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, BASIC_SCENE_FONT_SIZE, Orthanc::Encoding_Latin1);
+  compositor.Refresh();
+
+  Orthanc::ImageAccessor canvas;
+  compositor.GetCanvas().GetReadOnlyAccessor(canvas);
+
+  Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false);
+  Orthanc::ImageProcessing::Convert(png, canvas);
+
+  Orthanc::PngWriter writer;
+  writer.WriteToFile(target, png);
+}
+#endif
+
+void ShowCursorInfo(Scene2D& scene, const PointerEvent& pointerEvent)
+{
+  ScenePoint2D p = pointerEvent.GetMainPosition().Apply(scene.GetCanvasToSceneTransform());
+
+  char buf[64];
+  sprintf(buf, "(%0.02f,%0.02f)", p.GetX(), p.GetY());
+
+  if (scene.HasLayer(BASIC_SCENE_LAYER_POSITION))
+  {
+    TextSceneLayer& layer =
+        dynamic_cast<TextSceneLayer&>(scene.GetLayer(BASIC_SCENE_LAYER_POSITION));
+    layer.SetText(buf);
+    layer.SetPosition(p.GetX(), p.GetY());
+  }
+  else
+  {
+    std::auto_ptr<TextSceneLayer>
+        layer(new TextSceneLayer);
+    layer->SetColor(0, 255, 0);
+    layer->SetText(buf);
+    layer->SetBorder(20);
+    layer->SetAnchor(BitmapAnchor_BottomCenter);
+    layer->SetPosition(p.GetX(), p.GetY());
+    scene.SetLayer(BASIC_SCENE_LAYER_POSITION, layer.release());
+  }
+}
+
+
+
+bool BasicScene2DInteractor::OnMouseEvent(const GuiAdapterMouseEvent& event, const PointerEvent& pointerEvent)
+{
+  if (currentTracker_.get() != NULL)
+  {
+    switch (event.type)
+    {
+    case GUIADAPTER_EVENT_MOUSEUP:
+    {
+      currentTracker_->PointerUp(pointerEvent);
+      if (!currentTracker_->IsAlive())
+      {
+        currentTracker_.reset();
+      }
+    };break;
+    case GUIADAPTER_EVENT_MOUSEMOVE:
+    {
+      currentTracker_->PointerMove(pointerEvent);
+    };break;
+    default:
+      return false;
+    }
+    return true;
+  }
+  else if (event.type == GUIADAPTER_EVENT_MOUSEDOWN)
+  {
+    if (event.button == GUIADAPTER_MOUSEBUTTON_LEFT)
+    {
+      currentTracker_.reset(new RotateSceneTracker(viewportController_, pointerEvent));
+    }
+    else if (event.button == GUIADAPTER_MOUSEBUTTON_MIDDLE)
+    {
+      currentTracker_.reset(new PanSceneTracker(viewportController_, pointerEvent));
+    }
+    else if (event.button == GUIADAPTER_MOUSEBUTTON_RIGHT)
+    {
+      currentTracker_.reset(new ZoomSceneTracker(viewportController_, pointerEvent, viewportController_->GetViewport().GetCanvasHeight()));
+    }
+  }
+  else if (event.type == GUIADAPTER_EVENT_MOUSEMOVE)
+  {
+    if (showCursorInfo_)
+    {
+      Scene2D& scene(viewportController_->GetScene());
+      ShowCursorInfo(scene, pointerEvent);
+    }
+    return true;
+  }
+  return false;
+}
+
+bool BasicScene2DInteractor::OnKeyboardEvent(const GuiAdapterKeyboardEvent& guiEvent)
+{
+  if (guiEvent.type == GUIADAPTER_EVENT_KEYDOWN)
+  {
+    switch (guiEvent.sym[0])
+    {
+    case 's':
+    {
+      //viewportController_->FitContent(viewportController_->GetViewport().GetCanvasWidth(), viewportController_->GetViewport().GetCanvasHeight());
+      viewportController_->FitContent();
+      return true;
+    };
+#if ORTHANC_SANDBOXED == 0
+    case 'c':
+    {
+      Scene2D& scene(viewportController_->GetScene());
+      TakeScreenshot("screenshot.png", scene, viewportController_->GetViewport().GetCanvasWidth(), viewportController_->GetViewport().GetCanvasHeight());
+      return true;
+    }
+#endif
+    case 'd':
+    {
+      showCursorInfo_ = !showCursorInfo_;
+      if (!showCursorInfo_)
+      {
+        Scene2D& scene(viewportController_->GetScene());
+        scene.DeleteLayer(BASIC_SCENE_LAYER_POSITION);
+      }
+
+      return true;
+    }
+    }
+  }
+  return false;
+}
+
+bool BasicScene2DInteractor::OnWheelEvent(const GuiAdapterWheelEvent& guiEvent)
+{
+  return false;
+}