| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm/gm.h" |
| |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColorPriv.h" |
| #include "include/core/SkData.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkStream.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTypes.h" |
| #include "include/encode/SkJpegEncoder.h" |
| #include "include/private/base/SkTPin.h" |
| |
| #include <utility> |
| |
| namespace skiagm { |
| |
| class ColorCubeGM : public GM { |
| public: |
| ColorCubeGM() {} |
| |
| protected: |
| SkString getName() const override { return SkString("jpg-color-cube"); } |
| |
| SkISize getISize() override { return SkISize::Make(512, 512); } |
| |
| void onOnceBeforeDraw() override { |
| SkBitmap bmp; |
| bmp.allocN32Pixels(512, 512, true); |
| int bX = 0, bY = 0; |
| for (int b = 0; b < 64; ++b) { |
| for (int r = 0; r < 64; ++r) { |
| for (int g = 0; g < 64; ++g) { |
| *bmp.getAddr32(bX + r, bY + g) = SkPackARGB32(255, |
| SkTPin(r * 4, 0, 255), |
| SkTPin(g * 4, 0, 255), |
| SkTPin(b * 4, 0, 255)); |
| } |
| } |
| bX += 64; |
| if (bX >= 512) { |
| bX = 0; |
| bY += 64; |
| } |
| } |
| SkDynamicMemoryWStream stream; |
| SkASSERT_RELEASE(SkJpegEncoder::Encode(&stream, bmp.pixmap(), {})); |
| fImage = SkImages::DeferredFromEncodedData(stream.detachAsData()); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| canvas->drawImage(fImage, 0, 0); |
| } |
| |
| private: |
| sk_sp<SkImage> fImage; |
| |
| using INHERITED = GM; |
| }; |
| |
| DEF_GM( return new ColorCubeGM; ) |
| } // namespace skiagm |