Add stroking support to distance field path renderer

src/gpu/batches/GrAADistanceFieldPathRenderer.h

 
 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrAADistanceFieldPathRenderer_DEFINED
 #define GrAADistanceFieldPathRenderer_DEFINED
@@ skipping 15 matching lines @@
 private:
     StencilSupport onGetStencilSupport(const SkPath&, const GrStrokeInfo&) const override {
         return GrPathRenderer::kNoSupport_StencilSupport;
     }
 
     bool onCanDrawPath(const CanDrawPathArgs&) const override;
 
     bool onDrawPath(const DrawPathArgs&) override;
 
     struct PathData {
-        struct Key {
+        class Key {
+        public:
+            // default ctor needed for new of uninitialized PathData
+            // since fStroke has no default ctor
+            Key() 
+                : fGenID(0)
+                , fDimension(0)
+                , fStroke(SkStrokeRec::kFill_InitStyle) {}
+            Key(uint32_t genID, uint32_t dim, const SkStrokeRec& stroke)
+                : fGenID(genID)
+                , fDimension(dim)
+                , fStroke(stroke) {}
+           
+            bool operator==(const Key& other) const {
+                return other.fGenID == fGenID && other.fDimension == fDimension &&
+                       fStroke.hasEqualEffect(other.fStroke);
+            }
+           
+        private:
             uint32_t   fGenID;
             // rendered size for stored path (32x32 max, 64x64 max, 128x128 max)
             uint32_t   fDimension;
-            bool operator==(const Key& other) const {
-                return other.fGenID == fGenID && other.fDimension == fDimension;
-            }
+            // stroking information
+            SkStrokeRec fStroke;
         };
         Key                   fKey;
         SkScalar              fScale;
         GrBatchAtlas::AtlasID fID;
         SkRect                fBounds;
         SkIPoint16            fAtlasLocation;
         SK_DECLARE_INTERNAL_LLIST_INTERFACE(PathData);
         
         static inline const Key& GetKey(const PathData& data) {
             return data.fKey;
@@ skipping 13 matching lines @@
     PathCache                          fPathCache;
     PathDataList                       fPathList;
     
     typedef GrPathRenderer INHERITED;
 
     friend class AADistanceFieldPathBatch;
     friend struct PathTestStruct;
 };
 
 #endif