make SkComposeShader.h private

samplecode/PerlinPatch.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SampleCode.h"
 #include "SkAnimTimer.h"
 #include "SkCanvas.h"
 #include "SkGradientShader.h"
 #include "SkPatchUtils.h"
 #include "SkPerlinNoiseShader2/SkPerlinNoiseShader2.h"
-#include "SkComposeShader.h"
 
 static void draw_control_points(SkCanvas* canvas, const SkPoint cubics[12]) {
     //draw control points
     SkPaint paint;
     SkPoint bottom[SkPatchUtils::kNumPtsCubic];
     SkPatchUtils::getBottomCubic(cubics, bottom);
     SkPoint top[SkPatchUtils::kNumPtsCubic];
     SkPatchUtils::getTopCubic(cubics, top);
     SkPoint left[SkPatchUtils::kNumPtsCubic];
     SkPatchUtils::getLeftCubic(cubics, left);
@@ skipping 116 matching lines @@
             { fTexX + texWidth, fTexY - texHeight},
             { fTexX + texWidth, fTexY + texHeight},
             { fTexX - texWidth, fTexY + texHeight}}
         ;
         
         SkAutoTUnref<SkXfermode> xfer(SkXfermode::Create(SkXfermode::kSrc_Mode));
 
         SkScalar scaleFreq = 2.0;
         fShader1 = SkPerlinNoiseShader2::CreateImprovedNoise(fXFreq/scaleFreq, fYFreq/scaleFreq, 4,
                                                              fSeed);
-        fShaderCompose = new SkComposeShader(fShader0, fShader1);
+        fShaderCompose = SkShader::CreateComposeShader(fShader0, fShader1, nullptr);
 
         paint.setShader(fShaderCompose);
         canvas->drawPatch(fPts, nullptr, texCoords, xfer, paint);
 
         draw_control_points(canvas, fPts);
         SkSafeUnref(fShader1);
         SkSafeUnref(fShaderCompose);
     }
 
     class PtClick : public Click {
@@ skipping 42 matching lines @@
         this->inval(nullptr);
         return true;
     }
 
 private:
     typedef SampleView INHERITED;
 };
 
 DEF_SAMPLE( return new PerlinPatchView(); )