Enable CSS Gradients.

webkit/port/platform/graphics/GradientSkia.cpp

 /*
  * Copyright (C) 2008 Google, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 10 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
  */
 
 #include "config.h"
 #include "Gradient.h"
 
 #include "CSSParser.h"
 #include "GraphicsContext.h"
-#include "NotImplemented.h"
 
 #include "SkGradientShader.h"
 #include "SkiaUtils.h"
 
 namespace WebCore {
 
 void Gradient::platformDestroy()
 {
     if (m_gradient)
         m_gradient->safeUnref();
@@ skipping 72 matching lines @@
     ASSERT(count_used >= m_stops.size());
 
     // FIXME: Why is all this manual pointer math needed?!
     SkAutoMalloc storage(count_used * (sizeof(SkColor) + sizeof(SkScalar)));
     SkColor* colors = (SkColor*)storage.get();
     SkScalar* pos = (SkScalar*)(colors + count_used);
     
     fill_stops(m_stops.data(), m_stops.size(), pos, colors);
 
     if (m_radial) {
+        // TODO(mmoss) CSS radial Gradients allow an offset focal point (the
+        // "start circle"), but skia doesn't seem to support that, so this just
+        // ignores m_p0/m_r0 and draws the gradient centered in the "end
+        // circle" (m_p1/m_r1).
+        // See http://webkit.org/blog/175/introducing-css-gradients/ for a
+        // description of the expected behavior.
         m_gradient = SkGradientShader::CreateRadial(m_p1,
             WebCoreFloatToSkScalar(m_r1), colors, pos,
             static_cast<int>(count_used), SkShader::kClamp_TileMode);
     } else {
         SkPoint pts[2] = { m_p0, m_p1 };
         m_gradient = SkGradientShader::CreateLinear(pts, colors, pos,
             static_cast<int>(count_used), SkShader::kClamp_TileMode);
     }
 
     return m_gradient;
 }
 
 void Gradient::fill(GraphicsContext* context, const FloatRect& rect)
 {
-    // Until this is filled, we don't support CSSGradients
-    notImplemented();
+    context->setFillGradient(this);
+    context->fillRect(rect);
 }
 
 } // namespace WebCore