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