Splitting of layers for correct intersections

ui/gfx/skia_util.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/skia_util.h"
 
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkColorFilter.h"
 #include "third_party/skia/include/core/SkColorPriv.h"
 #include "third_party/skia/include/core/SkUnPreMultiply.h"
 #include "third_party/skia/include/effects/SkBlurMaskFilter.h"
 #include "third_party/skia/include/effects/SkGradientShader.h"
 #include "third_party/skia/include/effects/SkLayerDrawLooper.h"
 #include "ui/gfx/image/image_skia_rep.h"
+#include "ui/gfx/quad_f.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/rect_f.h"
 #include "ui/gfx/shadow_value.h"
 #include "ui/gfx/transform.h"
 
 namespace gfx {
 
 SkRect RectToSkRect(const Rect& rect) {
   SkRect r;
   r.iset(rect.x(), rect.y(), rect.right(), rect.bottom());
@@ skipping 158 matching lines @@
       rgba[i + 3] = alpha;
     } else {
       rgba[i + 0] = SkGetPackedR32(pixel_in);
       rgba[i + 1] = SkGetPackedG32(pixel_in);
       rgba[i + 2] = SkGetPackedB32(pixel_in);
       rgba[i + 3] = alpha;
     }
   }
 }
 
+void QuadFToSkPoints(const gfx::QuadF& quad, SkPoint points[4]) {
+  points[0] = SkPoint::Make(quad.p1().x(), quad.p1().y());
+  points[1] = SkPoint::Make(quad.p2().x(), quad.p2().y());
+  points[2] = SkPoint::Make(quad.p3().x(), quad.p3().y());
+  points[3] = SkPoint::Make(quad.p4().x(), quad.p4().y());
+}
+
 }  // namespace gfx