--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancStone/Sources/Scene2D/Internals/CairoColorTextureRenderer.cpp	Tue Jul 07 16:21:02 2020 +0200
@@ -0,0 +1,83 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2020 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 "CairoColorTextureRenderer.h"
+
+#include "../ColorTextureSceneLayer.h"
+
+namespace OrthancStone
+{
+  namespace Internals
+  {
+    CairoColorTextureRenderer::CairoColorTextureRenderer(ICairoContextProvider& target,
+                                                         const ISceneLayer& layer) :
+      target_(target)
+    {
+      Update(layer);
+    }
+
+    
+    void CairoColorTextureRenderer::Update(const ISceneLayer& layer)
+    {
+      const ColorTextureSceneLayer& l = dynamic_cast<const ColorTextureSceneLayer&>(layer);
+
+      texture_.Copy(l.GetTexture(), true);
+      textureTransform_ = l.GetTransform();
+      isLinearInterpolation_ = l.IsLinearInterpolation();
+    }
+
+
+    void CairoColorTextureRenderer::RenderColorTexture(ICairoContextProvider& target,
+                                                       const AffineTransform2D& transform,
+                                                       CairoSurface& texture,
+                                                       const AffineTransform2D& textureTransform,
+                                                       bool isLinearInterpolation)
+    {
+      cairo_t* cr = target.GetCairoContext();
+
+      AffineTransform2D t =
+        AffineTransform2D::Combine(transform, textureTransform);
+      Matrix h = t.GetHomogeneousMatrix();
+      
+      cairo_save(cr);
+
+      cairo_matrix_t m;
+      cairo_matrix_init(&m, h(0, 0), h(1, 0), h(0, 1), h(1, 1), h(0, 2), h(1, 2));
+      cairo_transform(cr, &m);
+
+      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
+      cairo_set_source_surface(cr, texture.GetObject(), 0, 0);
+
+      if (isLinearInterpolation)
+      {
+        cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_BILINEAR);
+      }
+      else
+      {
+        cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST);
+      }
+
+      cairo_paint(cr);
+
+      cairo_restore(cr);
+    }
+  }
+}