switch xfermodes over to sk_sp

samplecode/SampleAll.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 "SampleCode.h"
 #include "SkBlurMask.h"
 #include "SkCanvas.h"
 #include "SkView.h"
@@ skipping 364 matching lines @@
 
         SkEmbossMaskFilter::Light light;
         light.fDirection[0] = SK_Scalar1/2;
         light.fDirection[1] = SK_Scalar1/2;
         light.fDirection[2] = SK_Scalar1/3;
         light.fAmbient        = 0x48;
         light.fSpecular        = 0x80;
         SkScalar sigma = SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(12)/5);
         SkMaskFilter* embossFilter = SkEmbossMaskFilter::Create(sigma, light);
 
-        SkXfermode* xfermode = SkXfermode::Create(SkXfermode::kXor_Mode);
         auto lightingFilter = SkColorMatrixFilter::MakeLightingFilter(
             0xff89bc45, 0xff112233);
 
         canvas->save();
         canvas->translate(SkIntToScalar(0), SkIntToScalar(5));
         paint.setAntiAlias(true);
         paint.setFilterQuality(kLow_SkFilterQuality);
         // !!! draw through a clip
         paint.setColor(SK_ColorLTGRAY);
         paint.setStyle(SkPaint::kFill_Style);
         SkRect clip = {0, 0, SkIntToScalar(320), SkIntToScalar(120)};
         canvas->clipRect(clip);
         paint.setShader(SkShader::MakeBitmapShader(fTx,
             SkShader::kMirror_TileMode, SkShader::kRepeat_TileMode));
         canvas->drawPaint(paint);
         canvas->save();
 
         // line (exercises xfermode, colorShader, colorFilter, filterShader)
         paint.setColor(SK_ColorGREEN);
         paint.setStrokeWidth(SkIntToScalar(10));
         paint.setStyle(SkPaint::kStroke_Style);
-        paint.setXfermode(xfermode)->unref();
+        paint.setXfermode(SkXfermode::Make(SkXfermode::kXor_Mode));
         paint.setColorFilter(lightingFilter);
         canvas->drawLine(start.fX, start.fY, stop.fX, stop.fY, paint); // should not be green
         paint.setXfermode(nullptr);
         paint.setColorFilter(nullptr);
 
         // rectangle
         paint.setStyle(SkPaint::kFill_Style);
         canvas->translate(SkIntToScalar(50), 0);
         paint.setColor(SK_ColorYELLOW);
         paint.setShader(linear);
@@ skipping 80 matching lines @@
 
     sk_sp<SkShader> shaderTest() {
         SkPoint pts[] = { { 0, 0, }, { SkIntToScalar(100), 0 } };
         SkColor colors[] = { SK_ColorRED, SK_ColorBLUE };
         auto shaderA = SkGradientShader::MakeLinear(pts, colors, nullptr,
             2, SkShader::kClamp_TileMode);
         pts[1].set(0, SkIntToScalar(100));
         SkColor colors2[] = {SK_ColorBLACK,  SkColorSetARGB(0x80, 0, 0, 0)};
         auto shaderB = SkGradientShader::MakeLinear(pts, colors2, nullptr,
             2, SkShader::kClamp_TileMode);
-        SkAutoTUnref<SkXfermode> mode(SkXfermode::Create(SkXfermode::kDstIn_Mode));
-        return SkShader::MakeComposeShader(shaderA, shaderB, mode);
+        return SkShader::MakeComposeShader(std::move(shaderA), std::move(shaderB),
+                                           SkXfermode::Make(SkXfermode::kDstIn_Mode));
     }
 
     virtual void startTest() {
         decode_file("/Users/caryclark/Desktop/bugcirc.gif", &fBug);
         decode_file("/Users/caryclark/Desktop/tbcirc.gif", &fTb);
         decode_file("/Users/caryclark/Desktop/05psp04.gif", &fTx);
     }
 
     void drawRaster(SkCanvas* canvas)  {
         for (size_t index = 0; index < SK_ARRAY_COUNT(gRastProcs); index++)
@@ skipping 42 matching lines @@
 private:
     SkPoint fClickPt;
     SkBitmap fBug, fTb, fTx;
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new DemoView; }
 static SkViewRegister reg(MyFactory);