Implemented transparent gradients

src/pdf/SkPDFShader.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkPDFShader_DEFINED
@@ skipping 39 matching lines @@
     public:
         ShaderCanonicalEntry(SkPDFObject* pdfShader, const State* state);
         bool operator==(const ShaderCanonicalEntry& b) const;
 
         SkPDFObject* fPDFShader;
         const State* fState;
     };
     // This should be made a hash table if performance is a problem.
     static SkTDArray<ShaderCanonicalEntry>& CanonicalShaders();
     static SkBaseMutex& CanonicalShadersMutex();
+
+    // This is an internal method.
+    // CanonicalShadersMutex() should already be acquired.
+    // This also takes ownership of shaderState.
+    static SkPDFObject* GetPDFShaderByState(State* shaderState);
     static void RemoveShader(SkPDFObject* shader);
 
     SkPDFShader();
     virtual ~SkPDFShader() {};
 
     virtual bool isValid() = 0;
 };
 
 #endif