Reland of [2] of "switch colorfilters to sk_sp (patchset #11 id:200001 of https://codereview.chromium.o…

gm/colorcube.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 #include "SkColorCubeFilter.h"
 #include "SkData.h"
 #include "SkGradientShader.h"
 #include "SkTemplates.h"
 
 namespace skiagm {
 
 static sk_sp<SkShader> MakeLinear() {
     static const SkPoint pts[2] = {
             { 0, 0 },
             { SkIntToScalar(80), SkIntToScalar(80) }
         };
     static const SkColor colors[] = { SK_ColorYELLOW, SK_ColorBLUE };
     return SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kRepeat_TileMode, 0,
                                         &SkMatrix::I());
 }
 
 class ColorCubeGM : public GM {
 public:
-    ColorCubeGM()
-    : fInitialized(false)
-    , f3DLut4(nullptr)
-    , f3DLut8(nullptr)
-    , f3DLut16(nullptr)
-    , f3DLut32(nullptr)
-    , f3DLut64(nullptr)
-    {
+    ColorCubeGM() : fInitialized(false) {
         this->setBGColor(0xFF000000);
     }
 
-    ~ColorCubeGM() {
-        SkSafeUnref(f3DLut4);
-        SkSafeUnref(f3DLut8);
-        SkSafeUnref(f3DLut16);
-        SkSafeUnref(f3DLut32);
-        SkSafeUnref(f3DLut64);
-    }
-
 protected:
-    virtual SkString onShortName() {
+    SkString onShortName() override {
         return SkString("colorcube");
     }
 
     void make_3Dluts() {
         make_3Dlut(&f3DLut4, 4, true, false, false);
         make_3Dlut(&f3DLut8, 8, false, true, false);
         make_3Dlut(&f3DLut16, 16, false, true, true);
         make_3Dlut(&f3DLut32, 32, true, true, false);
         make_3Dlut(&f3DLut64, 64, true, false, true);
     }
 
     void make_bitmap() {
         fBitmap.allocN32Pixels(80, 80);
         SkCanvas canvas(fBitmap);
         canvas.clear(0x00000000);
         SkPaint paint;
         paint.setAntiAlias(true);
         paint.setShader(MakeLinear());
         canvas.drawRect(SkRect::MakeWH(80, 80), paint);
     }
 
-    void make_3Dlut(SkData** data, int size, bool invR, bool invG, bool invB) {
-        *data = SkData::NewUninitialized(sizeof(SkColor) * size * size * size);
+    void make_3Dlut(sk_sp<SkData>* data, int size, bool invR, bool invG, bool invB) {
+        *data = SkData::MakeUninitialized(sizeof(SkColor) * size * size * size);
         SkColor* pixels = (SkColor*)((*data)->writable_data());
         SkAutoTMalloc<uint8_t> lutMemory(size);
         SkAutoTMalloc<uint8_t> invLutMemory(size);
         uint8_t* lut = lutMemory.get();
         uint8_t* invLut = invLutMemory.get();
         const int maxIndex = size - 1;
         for (int i = 0; i < size; i++) {
             lut[i] = (i * 255) / maxIndex;
             invLut[i] = ((maxIndex - i) * 255) / maxIndex;
         }
         for (int r = 0; r < size; ++r) {
             for (int g = 0; g < size; ++g) {
                 for (int b = 0; b < size; ++b) {
                     pixels[(size * ((size * b) + g)) + r] = sk_tool_utils::color_to_565(
                             SkColorSetARGB(0xFF,
                             invR ? invLut[r] : lut[r],
                             invG ? invLut[g] : lut[g],
                             invB ? invLut[b] : lut[b]));
                 }
             }
         }
     }
 
-    virtual SkISize onISize() {
+    SkISize onISize() override {
         return SkISize::Make(500, 100);
     }
 
-    virtual void onDraw(SkCanvas* canvas) {
+    void onDraw(SkCanvas* canvas) override {
         if (!fInitialized) {
             this->make_bitmap();
             this->make_3Dluts();
             fInitialized = true;
         }
         canvas->clear(0x00000000);
         SkPaint paint;
-        paint.setColorFilter(SkColorCubeFilter::Create(f3DLut4, 4))->unref();
+        paint.setColorFilter(SkColorCubeFilter::Make(f3DLut4, 4));
         canvas->drawBitmap(fBitmap, 10, 10, &paint);
 
-        paint.setColorFilter(SkColorCubeFilter::Create(f3DLut8, 8))->unref();
+        paint.setColorFilter(SkColorCubeFilter::Make(f3DLut8, 8));
         canvas->drawBitmap(fBitmap, 110, 10, &paint);
 
-        paint.setColorFilter(SkColorCubeFilter::Create(f3DLut16, 16))->unref();
+        paint.setColorFilter(SkColorCubeFilter::Make(f3DLut16, 16));
         canvas->drawBitmap(fBitmap, 210, 10, &paint);
 
-        paint.setColorFilter(SkColorCubeFilter::Create(f3DLut32, 32))->unref();
+        paint.setColorFilter(SkColorCubeFilter::Make(f3DLut32, 32));
         canvas->drawBitmap(fBitmap, 310, 10, &paint);
 
-        paint.setColorFilter(SkColorCubeFilter::Create(f3DLut64, 64))->unref();
+        paint.setColorFilter(SkColorCubeFilter::Make(f3DLut64, 64));
         canvas->drawBitmap(fBitmap, 410, 10, &paint);
     }
 
 private:
     typedef GM INHERITED;
     bool fInitialized;
     SkBitmap fBitmap;
-    SkData* f3DLut4;
-    SkData* f3DLut8;
-    SkData* f3DLut16;
-    SkData* f3DLut32;
-    SkData* f3DLut64;
+    sk_sp<SkData> f3DLut4;
+    sk_sp<SkData> f3DLut8;
+    sk_sp<SkData> f3DLut16;
+    sk_sp<SkData> f3DLut32;
+    sk_sp<SkData> f3DLut64;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new ColorCubeGM; }
 static GMRegistry reg(MyFactory);
 
 }