1 /* 2 * Copyright 2012 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 10 #include "Resources.h" 11 #include "SkCanvas.h" 12 #include "SkImageDecoder.h" 13 #include "SkStream.h" 14 15 namespace skiagm { 16 17 /** Draw a CMYK encoded jpeg - libjpeg doesn't support CMYK->RGB 18 conversion so this tests Skia's internal processing 19 */ 20 class CMYKJpegGM : public GM { 21 public: 22 CMYKJpegGM() {} 23 24 protected: 25 virtual void onOnceBeforeDraw() SK_OVERRIDE { 26 // parameters to the "decode" call 27 bool dither = false; 28 29 SkString resourcePath = GetResourcePath(); 30 if (!resourcePath.endsWith("/") && !resourcePath.endsWith("\\")) { 31 resourcePath.append("/"); 32 } 33 34 resourcePath.append("CMYK.jpg"); 35 36 SkFILEStream stream(resourcePath.c_str()); 37 if (!stream.isValid()) { 38 SkDebugf("Could not find CMYK.jpg, please set --resourcePath correctly.\n"); 39 return; 40 } 41 42 SkImageDecoder* codec = SkImageDecoder::Factory(&stream); 43 if (codec) { 44 stream.rewind(); 45 codec->setDitherImage(dither); 46 codec->decode(&stream, &fBitmap, kN32_SkColorType, SkImageDecoder::kDecodePixels_Mode); 47 SkDELETE(codec); 48 } 49 } 50 51 virtual SkString onShortName() { 52 return SkString("cmykjpeg"); 53 } 54 55 virtual SkISize onISize() { 56 return SkISize::Make(640, 480); 57 } 58 59 virtual void onDraw(SkCanvas* canvas) { 60 61 canvas->translate(20*SK_Scalar1, 20*SK_Scalar1); 62 canvas->drawBitmap(fBitmap, 0, 0); 63 } 64 65 private: 66 SkBitmap fBitmap; 67 68 typedef GM INHERITED; 69 }; 70 71 ////////////////////////////////////////////////////////////////////////////// 72 73 static GM* MyFactory(void*) { return new CMYKJpegGM; } 74 static GMRegistry reg(MyFactory); 75 76 } 77
