1 /* 2 * Copyright 2016 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.h" 9 #include "Resources.h" 10 #include "SkCodec.h" 11 #include "SkImage.h" 12 13 namespace skiagm { 14 15 class BitmapImageGM : public GM { 16 public: BitmapImageGM()17 BitmapImageGM() {} 18 19 protected: 20 onShortName()21 SkString onShortName() override { 22 return SkString("bitmap-image-srgb-legacy"); 23 } 24 onISize()25 SkISize onISize() override { 26 return SkISize::Make(2*kSize, 2*kSize); 27 } 28 onDraw(SkCanvas * canvas)29 void onDraw(SkCanvas* canvas) override { 30 // Create image. 31 const char* path = "images/mandrill_512_q075.jpg"; 32 sk_sp<SkImage> image = GetResourceAsImage(path); 33 if (!image) { 34 SkDebugf("Failure: Is the resource path set properly?"); 35 return; 36 } 37 38 // Create matching bitmap. 39 std::unique_ptr<SkCodec> codec(SkCodec::MakeFromStream(GetResourceAsStream(path))); 40 SkBitmap bitmap; 41 bitmap.allocPixels(codec->getInfo()); 42 codec->getPixels(codec->getInfo(), bitmap.getPixels(), bitmap.rowBytes()); 43 44 // The GM will be displayed in a 2x2 grid. 45 // The top two squares show an sRGB image, then bitmap, drawn to a legacy canvas. 46 SkImageInfo linearInfo = SkImageInfo::MakeN32(2*kSize, kSize, kOpaque_SkAlphaType); 47 SkBitmap legacyBMCanvas; 48 legacyBMCanvas.allocPixels(linearInfo); 49 SkCanvas legacyCanvas(legacyBMCanvas); 50 legacyCanvas.drawImage(image, 0.0f, 0.0f, nullptr); 51 legacyCanvas.translate(SkScalar(kSize), 0.0f); 52 legacyCanvas.drawBitmap(bitmap, 0.0f, 0.0f, nullptr); 53 canvas->drawBitmap(legacyBMCanvas, 0.0f, 0.0f, nullptr); 54 canvas->translate(0.0f, SkScalar(kSize)); 55 56 // The bottom two squares show an sRGB image, then bitmap, drawn to a srgb canvas. 57 SkImageInfo srgbInfo = SkImageInfo::MakeS32(2*kSize, kSize, kOpaque_SkAlphaType); 58 SkBitmap srgbBMCanvas; 59 srgbBMCanvas.allocPixels(srgbInfo); 60 SkCanvas srgbCanvas(srgbBMCanvas); 61 srgbCanvas.drawImage(image, 0.0f, 0.0f, nullptr); 62 srgbCanvas.translate(SkScalar(kSize), 0.0f); 63 srgbCanvas.drawBitmap(bitmap, 0.0f, 0.0f, nullptr); 64 canvas->drawBitmap(srgbBMCanvas, 0.0f, 0.0f, nullptr); 65 } 66 67 private: 68 static constexpr int kSize = 512; 69 70 typedef GM INHERITED; 71 }; 72 73 ////////////////////////////////////////////////////////////////////////////// 74 75 DEF_GM( return new BitmapImageGM; ) 76 77 } 78
