# HG changeset patch
# User Sebastien Jodogne <s.jodogne@gmail.com>
# Date 1556284271 -7200
# Node ID 6e471e6cf09bca15e67a1cc0785204d7289ab644
# Parent  9807ed3d3e03feed23bdf358b186daeeca920869
CairoPolylineRenderer, SdlOpenGLWindow

diff -r 9807ed3d3e03 -r 6e471e6cf09b Applications/Sdl/SdlOpenGLWindow.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Applications/Sdl/SdlOpenGLWindow.cpp	Fri Apr 26 15:11:11 2019 +0200
@@ -0,0 +1,87 @@
+/**
+ * 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 "SdlOpenGLWindow.h"
+
+#if ORTHANC_ENABLE_SDL == 1
+
+#include <Core/OrthancException.h>
+
+namespace OrthancStone
+{
+  SdlOpenGLWindow::SdlOpenGLWindow(const char* title,
+                                   unsigned int width,
+                                   unsigned int height) :
+    window_(title, width, height, true /* enable OpenGL */)
+  {
+    context_ = SDL_GL_CreateContext(window_.GetObject());
+    
+    if (context_ == NULL)
+    {
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
+                                      "Cannot initialize OpenGL");
+    }
+  }
+
+  
+  SdlOpenGLWindow::~SdlOpenGLWindow()
+  {
+    SDL_GL_DeleteContext(context_);
+  }
+
+
+  void SdlOpenGLWindow::MakeCurrent()
+  {
+    if (SDL_GL_MakeCurrent(window_.GetObject(), context_) != 0)
+    {
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError,
+                                      "Cannot set current OpenGL context");
+    }
+
+    // This makes our buffer swap syncronized with the monitor's vertical refresh
+    SDL_GL_SetSwapInterval(1);
+  }
+
+  
+  void SdlOpenGLWindow::SwapBuffer()
+  {
+    // Swap our buffer to display the current contents of buffer on screen
+    SDL_GL_SwapWindow(window_.GetObject());
+  }
+
+  
+  unsigned int SdlOpenGLWindow::GetCanvasWidth()
+  {
+    int w = 0;
+    SDL_GL_GetDrawableSize(window_.GetObject(), &w, NULL);
+    return static_cast<unsigned int>(w);
+  }
+
+  
+  unsigned int SdlOpenGLWindow::GetCanvasHeight()
+  {
+    int h = 0;
+    SDL_GL_GetDrawableSize(window_.GetObject(), NULL, &h);
+    return static_cast<unsigned int>(h);
+  }
+}
+
+#endif
diff -r 9807ed3d3e03 -r 6e471e6cf09b Applications/Sdl/SdlOpenGLWindow.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Applications/Sdl/SdlOpenGLWindow.h	Fri Apr 26 15:11:11 2019 +0200
@@ -0,0 +1,59 @@
+/**
+ * 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/>.
+ **/
+
+
+#pragma once
+
+#if ORTHANC_ENABLE_SDL == 1
+
+#include "../../Framework/OpenGL/IOpenGLContext.h"
+#include "SdlWindow.h"
+
+namespace OrthancStone
+{
+  class SdlOpenGLWindow : public OpenGL::IOpenGLContext
+  {
+  private:
+    SdlWindow      window_;
+    SDL_GLContext  context_;
+
+  public:
+    SdlOpenGLWindow(const char* title,
+                    unsigned int width,
+                    unsigned int height);
+
+    ~SdlOpenGLWindow();
+
+    SdlWindow& GetWindow()
+    {
+      return window_;
+    }
+
+    virtual void MakeCurrent();
+
+    virtual void SwapBuffer();
+
+    virtual unsigned int GetCanvasWidth();
+
+    virtual unsigned int GetCanvasHeight();
+  };
+}
+
+#endif
diff -r 9807ed3d3e03 -r 6e471e6cf09b Framework/Scene2D/Internals/CairoBaseRenderer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Scene2D/Internals/CairoBaseRenderer.h	Fri Apr 26 15:11:11 2019 +0200
@@ -0,0 +1,63 @@
+/**
+ * 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/>.
+ **/
+
+
+#pragma once
+
+#include "ICairoContextProvider.h"
+#include "CompositorHelper.h"
+
+namespace OrthancStone
+{
+  namespace Internals
+  {
+    class CairoBaseRenderer : public CompositorHelper::ILayerRenderer
+    {
+    private:
+      ICairoContextProvider&      target_;
+      std::auto_ptr<ISceneLayer>  layer_;
+
+    protected:
+      template<typename T>
+      const T& GetLayer() const
+      {
+        return dynamic_cast<T&>(*layer_);
+      }
+
+      cairo_t* GetCairoContext() const
+      {
+        return target_.GetCairoContext();
+      }
+    
+    public:
+      CairoBaseRenderer(ICairoContextProvider& target,
+                        const ISceneLayer& layer) :
+        target_(target)
+      {
+        Update(layer);
+      }
+
+      virtual void Update(const ISceneLayer& layer)
+      {
+        layer_.reset(layer.Clone());
+      }    
+    };
+  }
+}
diff -r 9807ed3d3e03 -r 6e471e6cf09b Framework/Scene2D/Internals/CairoPolylineRenderer.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Scene2D/Internals/CairoPolylineRenderer.cpp	Fri Apr 26 15:11:11 2019 +0200
@@ -0,0 +1,70 @@
+/**
+ * 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 "CairoPolylineRenderer.h"
+
+#include "../PolylineSceneLayer.h"
+
+namespace OrthancStone
+{
+  namespace Internals
+  {
+    void CairoPolylineRenderer::Render(const AffineTransform2D& transform)
+    {
+      const PolylineSceneLayer& layer = GetLayer<PolylineSceneLayer>();
+      
+      cairo_t* cr = GetCairoContext();
+
+      cairo_set_source_rgb(cr, layer.GetRedAsFloat(), layer.GetGreenAsFloat(), layer.GetBlueAsFloat());
+      cairo_set_line_width(cr, layer.GetThickness());
+      
+      for (size_t i = 0; i < layer.GetChainsCount(); i++)
+      {
+        const PolylineSceneLayer::Chain& chain = layer.GetChain(i);
+
+        if (!chain.empty())
+        {
+          for (size_t j = 0; j < chain.size(); j++)
+          {
+            ScenePoint2D p = chain[j].Apply(transform);
+
+            if (j == 0)
+            {
+              cairo_move_to(cr, p.GetX(), p.GetY());
+            }
+            else
+            {
+              cairo_line_to(cr, p.GetX(), p.GetY());
+            }
+          }
+
+          if (layer.IsClosedChain(i))
+          {
+            ScenePoint2D p = chain[0].Apply(transform);
+            cairo_line_to(cr, p.GetX(), p.GetY());
+          }
+        }
+      }
+
+      cairo_stroke(cr);
+    }
+  }
+}
diff -r 9807ed3d3e03 -r 6e471e6cf09b Framework/Scene2D/Internals/CairoPolylineRenderer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Scene2D/Internals/CairoPolylineRenderer.h	Fri Apr 26 15:11:11 2019 +0200
@@ -0,0 +1,42 @@
+/**
+ * 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/>.
+ **/
+
+
+#pragma once
+
+#include "CairoBaseRenderer.h"
+
+namespace OrthancStone
+{
+  namespace Internals
+  {
+    class CairoPolylineRenderer : public CairoBaseRenderer
+    {
+    public:
+      CairoPolylineRenderer(ICairoContextProvider& target,
+                            const ISceneLayer& layer) :
+        CairoBaseRenderer(target, layer)
+      {
+      }
+    
+      virtual void Render(const AffineTransform2D& transform);
+    };
+  }
+}
diff -r 9807ed3d3e03 -r 6e471e6cf09b Framework/Scene2D/Internals/ICairoContextProvider.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Scene2D/Internals/ICairoContextProvider.h	Fri Apr 26 15:11:11 2019 +0200
@@ -0,0 +1,46 @@
+/**
+ * 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/>.
+ **/
+
+
+#pragma once
+
+#include <boost/noncopyable.hpp>
+#include <cairo.h>
+#include <stdint.h>
+
+namespace OrthancStone
+{
+  namespace Internals
+  {
+    class ICairoContextProvider : public boost::noncopyable
+    {
+    public:
+      virtual ~ICairoContextProvider()
+      {
+      }
+
+      virtual cairo_t* GetCairoContext() = 0;
+
+      virtual unsigned int GetCairoWidth() = 0;
+
+      virtual unsigned int GetCairoHeight() = 0;
+    };
+  }
+}
diff -r 9807ed3d3e03 -r 6e471e6cf09b Resources/CMake/OrthancStoneConfiguration.cmake
--- a/Resources/CMake/OrthancStoneConfiguration.cmake	Fri Apr 26 14:45:47 2019 +0200
+++ b/Resources/CMake/OrthancStoneConfiguration.cmake	Fri Apr 26 15:11:11 2019 +0200
@@ -213,10 +213,11 @@
       )
     if (ENABLE_SDL)
       list(APPEND APPLICATIONS_SOURCES
-        ${ORTHANC_STONE_ROOT}/Applications/Sdl/SdlStoneApplicationRunner.cpp
+        ${ORTHANC_STONE_ROOT}/Applications/Sdl/SdlCairoSurface.cpp
         ${ORTHANC_STONE_ROOT}/Applications/Sdl/SdlEngine.cpp
-        ${ORTHANC_STONE_ROOT}/Applications/Sdl/SdlCairoSurface.cpp
+        ${ORTHANC_STONE_ROOT}/Applications/Sdl/SdlOpenGLWindow.cpp
         ${ORTHANC_STONE_ROOT}/Applications/Sdl/SdlOrthancSurface.cpp
+        ${ORTHANC_STONE_ROOT}/Applications/Sdl/SdlStoneApplicationRunner.cpp
         ${ORTHANC_STONE_ROOT}/Applications/Sdl/SdlWindow.cpp
         )
     endif()
@@ -259,6 +260,7 @@
   ${ORTHANC_STONE_ROOT}/Framework/Scene2D/ColorTextureSceneLayer.cpp
   ${ORTHANC_STONE_ROOT}/Framework/Scene2D/FloatTextureSceneLayer.cpp
   ${ORTHANC_STONE_ROOT}/Framework/Scene2D/InfoPanelSceneLayer.cpp
+  ${ORTHANC_STONE_ROOT}/Framework/Scene2D/Internals/CairoPolylineRenderer.cpp
   ${ORTHANC_STONE_ROOT}/Framework/Scene2D/Internals/CompositorHelper.cpp
   ${ORTHANC_STONE_ROOT}/Framework/Scene2D/PolylineSceneLayer.cpp
   ${ORTHANC_STONE_ROOT}/Framework/Scene2D/Scene2D.cpp