switch xfermodes over to sk_sp

samplecode/SampleShaders.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "DecodeFile.h"
 #include "SampleCode.h"
 #include "SkView.h"
@@ skipping 14 matching lines @@
     SkPoint pts[2];
     SkColor colors[2];
 
     pts[0].set(0, 0);
     pts[1].set(0, SkIntToScalar(bm.height()));
     colors[0] = SK_ColorBLACK;
     colors[1] = SkColorSetARGB(0, 0, 0, 0);
     auto shaderA = SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kClamp_TileMode);
 
     auto shaderB = SkShader::MakeBitmapShader(bm,
-                        SkShader::kClamp_TileMode, SkShader::kClamp_TileMode);
+                                              SkShader::kClamp_TileMode, SkShader::kClamp_TileMode);
 
-    SkAutoTUnref<SkXfermode> mode(SkXfermode::Create(SkXfermode::kDstIn_Mode));
-
-    return SkShader::MakeComposeShader(std::move(shaderB), std::move(shaderA), mode);
+    return SkShader::MakeComposeShader(std::move(shaderB), std::move(shaderA),
+                                       SkXfermode::Make(SkXfermode::kDstIn_Mode));
 }
 
 class ShaderView : public SampleView {
 public:
     sk_sp<SkShader> fShader;
     SkBitmap        fBitmap;
 
     ShaderView() {
         decode_file("/skimages/logo.gif", &fBitmap);
 
         SkPoint pts[2];
         SkColor colors[2];
 
         pts[0].set(0, 0);
         pts[1].set(SkIntToScalar(100), 0);
         colors[0] = SK_ColorRED;
         colors[1] = SK_ColorBLUE;
         auto shaderA = SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kClamp_TileMode);
 
         pts[0].set(0, 0);
         pts[1].set(0, SkIntToScalar(100));
         colors[0] = SK_ColorBLACK;
         colors[1] = SkColorSetARGB(0x80, 0, 0, 0);
         auto shaderB = SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kClamp_TileMode);
 
-        SkAutoTUnref<SkXfermode> mode(SkXfermode::Create(SkXfermode::kDstIn_Mode));
-
-        fShader = SkShader::MakeComposeShader(std::move(shaderA), std::move(shaderB), mode);
+        fShader = SkShader::MakeComposeShader(std::move(shaderA), std::move(shaderB),
+                                              SkXfermode::Make(SkXfermode::kDstIn_Mode));
     }
 
 protected:
     // overrides from SkEventSink
     bool onQuery(SkEvent* evt) override {
         if (SampleCode::TitleQ(*evt)) {
             SampleCode::TitleR(evt, "Shaders");
             return true;
         }
         return this->INHERITED::onQuery(evt);
@@ skipping 36 matching lines @@
     }
 
 private:
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new ShaderView; }
 static SkViewRegister reg(MyFactory);