move setshader to sk_sp

samplecode/SampleCamera.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 "SkAnimTimer.h"
 #include "SkView.h"
 #include "SkCanvas.h"
 #include "SkCamera.h"
 #include "SkEmbossMaskFilter.h"
 #include "SkGradientShader.h"
 #include "SkPath.h"
 #include "SkRegion.h"
 #include "SkShader.h"
 #include "SkUtils.h"
 #include "SkRandom.h"
 
 class CameraView : public SampleView {
-    SkTDArray<SkShader*> fShaders;
+    SkTArray<sk_sp<SkShader>> fShaders;
     int     fShaderIndex;
     bool    fFrontFace;
 public:
     CameraView() {
         fRX = fRY = fRZ = 0;
         fShaderIndex = 0;
         fFrontFace = false;
 
         for (int i = 0;; i++) {
             SkString str;
             str.printf("/skimages/elephant%d.jpeg", i);
             SkBitmap bm;
             if (decode_file(str.c_str(), &bm)) {
                 SkRect src = { 0, 0, SkIntToScalar(bm.width()), SkIntToScalar(bm.height()) };
                 SkRect dst = { -150, -150, 150, 150 };
                 SkMatrix matrix;
                 matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit);
 
-                SkShader* s = SkShader::MakeBitmapShader(bm,
+                fShaders.push_back(SkShader::MakeBitmapShader(bm,
                                                            SkShader::kClamp_TileMode,
                                                            SkShader::kClamp_TileMode,
-                                                           &matrix).release();
-                *fShaders.append() = s;
+                                                           &matrix));
             } else {
                 break;
             }
         }
         this->setBGColor(0xFFDDDDDD);
     }
 
-    virtual ~CameraView() {
-        fShaders.unrefAll();
-    }
-
 protected:
     // overrides from SkEventSink
     bool onQuery(SkEvent* evt) override {
         if (SampleCode::TitleQ(*evt)) {
             SampleCode::TitleR(evt, "Camera");
             return true;
         }
         return this->INHERITED::onQuery(evt);
     }
 
@@ skipping 32 matching lines @@
 
 private:
     SkScalar fRX, fRY, fRZ;
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new CameraView; }
 static SkViewRegister reg(MyFactory);