1 /* 2 * Copyright 2017 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "gm/gm.h" 9 #include "include/core/SkBitmap.h" 10 #include "include/core/SkCanvas.h" 11 #include "include/core/SkColorPriv.h" 12 #include "include/core/SkData.h" 13 #include "include/core/SkEncodedImageFormat.h" 14 #include "include/core/SkImage.h" 15 #include "include/core/SkImageEncoder.h" 16 #include "include/core/SkRefCnt.h" 17 #include "include/core/SkSize.h" 18 #include "include/core/SkString.h" 19 #include "include/core/SkTypes.h" 20 21 #include <utility> 22 23 namespace skiagm { 24 25 class ColorCubeGM : public GM { 26 public: ColorCubeGM()27 ColorCubeGM() {} 28 29 protected: onShortName()30 SkString onShortName() override { 31 return SkString("jpg-color-cube"); 32 } 33 onISize()34 SkISize onISize() override { 35 return SkISize::Make(512, 512); 36 } 37 onOnceBeforeDraw()38 void onOnceBeforeDraw() override { 39 SkBitmap bmp; 40 bmp.allocN32Pixels(512, 512, true); 41 int bX = 0, bY = 0; 42 for (int b = 0; b < 64; ++b) { 43 for (int r = 0; r < 64; ++r) { 44 for (int g = 0; g < 64; ++g) { 45 *bmp.getAddr32(bX + r, bY + g) = SkPackARGB32(255, 46 SkTPin(r * 4, 0, 255), 47 SkTPin(g * 4, 0, 255), 48 SkTPin(b * 4, 0, 255)); 49 } 50 } 51 bX += 64; 52 if (bX >= 512) { 53 bX = 0; 54 bY += 64; 55 } 56 } 57 auto jpegData = SkEncodeBitmap(bmp, SkEncodedImageFormat::kJPEG, 100); 58 fImage = SkImage::MakeFromEncoded(std::move(jpegData)); 59 } 60 onDraw(SkCanvas * canvas)61 void onDraw(SkCanvas* canvas) override { 62 canvas->drawImage(fImage, 0, 0); 63 } 64 65 private: 66 sk_sp<SkImage> fImage; 67 68 typedef GM INHERITED; 69 }; 70 71 DEF_GM( return new ColorCubeGM; ) 72 } 73