1 /*
2  * Copyright 2011 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/SkData.h"
12 #include "include/core/SkEncodedImageFormat.h"
13 #include "include/core/SkFont.h"
14 #include "include/core/SkImage.h"
15 #include "include/core/SkImageEncoder.h"
16 #include "include/core/SkPaint.h"
17 #include "include/core/SkRefCnt.h"
18 #include "include/core/SkSize.h"
19 #include "include/core/SkString.h"
20 #include "tools/Resources.h"
21 
22 namespace skiagm {
23 
24 class EncodeGM : public GM {
25 public:
EncodeGM()26     EncodeGM() {}
27 
28 protected:
onShortName()29     SkString onShortName() override {
30         return SkString("encode");
31     }
32 
onISize()33     SkISize onISize() override {
34         return SkISize::Make(1024, 600);
35     }
36 
onDraw(SkCanvas * canvas)37     void onDraw(SkCanvas* canvas) override {
38         SkBitmap orig;
39         GetResourceAsBitmap("images/mandrill_512_q075.jpg", &orig);
40         auto pngData = SkEncodeBitmap(orig, SkEncodedImageFormat::kPNG, 100);
41         auto jpgData = SkEncodeBitmap(orig, SkEncodedImageFormat::kJPEG, 100);
42 
43         sk_sp<SkImage> pngImage = SkImage::MakeFromEncoded(pngData);
44         sk_sp<SkImage> jpgImage = SkImage::MakeFromEncoded(jpgData);
45         canvas->drawImage(pngImage.get(), 0.0f, 0.0f);
46         canvas->drawImage(jpgImage.get(), 512.0f, 0.0f);
47 
48         SkFont font;
49         font.setEdging(SkFont::Edging::kAlias);
50         canvas->drawString("Images should look identical.", 450.0f, 550.0f, font, SkPaint());
51     }
52 
53 private:
54     using INHERITED = GM;
55 };
56 
57 DEF_GM( return new EncodeGM; )
58 }  // namespace skiagm
59 
60 ///////////
61 
62 #if 0
63 DEF_SIMPLE_GM(jpeg_orientation, canvas, 1000, 1000) {
64     static sk_sp<SkImage> imgs[8];
65     if (!imgs[0]) {
66         for (int i = 0; i < 8; ++i) {
67             SkString path;
68             path.printf("/skia/orientation/Landscape_%d.jpg", i + 1);
69             auto stream = SkStream::MakeFromFile(path.c_str());
70             auto data = SkData::MakeFromStream(stream.get(), stream->getLength());
71             imgs[i] = SkImage::MakeFromEncoded(data, nullptr);
72         }
73     }
74     canvas->scale(0.25, 0.25);
75     for (int i = 0; i < 8; ++i) {
76         SkImage* img = imgs[i].get();
77         canvas->drawImage(img, 0, 0, nullptr);
78         canvas->translate(0, img->height());
79         if (i == 3) {
80             canvas->translate(img->width(), -4*img->height());
81         }
82     }
83 }
84 #endif
85