--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Widgets/TestWorldSceneWidget.cpp	Fri Oct 14 15:34:11 2016 +0200
@@ -0,0 +1,142 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "TestWorldSceneWidget.h"
+
+#include <stdio.h>
+
+namespace OrthancStone
+{
+  namespace Samples
+  {
+    class TestWorldSceneWidget::Interactor : public IWorldSceneInteractor
+    {
+    public:
+      virtual IWorldSceneMouseTracker* CreateMouseTracker(WorldSceneWidget& widget,
+                                                          const SliceGeometry& slice,
+                                                          const ViewportGeometry& view,
+                                                          MouseButton button,
+                                                          double x,
+                                                          double y,
+                                                          IStatusBar* statusBar)
+      {
+        if (statusBar)
+        {
+          char buf[64];
+          sprintf(buf, "X = %0.2f, Y = %0.2f", x, y);
+          statusBar->SetMessage(buf);
+        }
+
+        return NULL;
+      }
+
+      virtual void MouseOver(CairoContext& context,
+                             WorldSceneWidget& widget,
+                             const SliceGeometry& slice,
+                             const ViewportGeometry& view,
+                             double x,
+                             double y,
+                             IStatusBar* statusBar)
+      {
+        double S = 0.5;
+
+        if (fabs(x) <= S &&
+            fabs(y) <= S)
+        {
+          cairo_t* cr = context.GetObject();
+          cairo_set_source_rgb(cr, 1, 0, 0);
+          cairo_rectangle(cr, -S, -S , 2.0 * S, 2.0 * S);
+          cairo_set_line_width(cr, 1.0 / view.GetZoom());
+          cairo_stroke(cr);
+        }
+      }
+
+      virtual void MouseWheel(WorldSceneWidget& widget,
+                              MouseWheelDirection direction,
+                              KeyboardModifiers modifiers,
+                              IStatusBar* statusBar)
+      {
+        if (statusBar)
+        {
+          statusBar->SetMessage(direction == MouseWheelDirection_Down ? "Wheel down" : "Wheel up");
+        }
+      }
+
+      virtual void KeyPressed(WorldSceneWidget& widget,
+                              char key,
+                              KeyboardModifiers modifiers,
+                              IStatusBar* statusBar)
+      {
+        if (statusBar)
+        {
+          statusBar->SetMessage("Key pressed: \"" + std::string(1, key) + "\"");
+        }
+      }
+    };
+
+
+    bool TestWorldSceneWidget::RenderScene(CairoContext& context,
+                                           const ViewportGeometry& view)
+    {
+      cairo_t* cr = context.GetObject();
+
+      // Clear background
+      cairo_set_source_rgb(cr, 0, 0, 0);
+      cairo_paint(cr);
+
+      cairo_set_source_rgb(cr, 0, 1, 0);
+      cairo_rectangle(cr, -10, -.5, 20, 1);
+      cairo_fill(cr);
+
+      return true;
+    }
+
+
+    TestWorldSceneWidget::TestWorldSceneWidget() :
+      interactor_(new Interactor)
+    {
+      SetInteractor(*interactor_);
+    }
+
+
+    void TestWorldSceneWidget::GetSceneExtent(double& x1,
+                                              double& y1,
+                                              double& x2,
+                                              double& y2)
+    {
+      x1 = -10;
+      x2 = 10;
+      y1 = -.5;
+      y2 = .5;
+    }
+  }
+}