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1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "components/favicon_base/fallback_icon_service.h" | |
6 | |
7 #include <algorithm> | |
8 | |
9 #include "base/i18n/case_conversion.h" | |
10 #include "base/strings/utf_string_conversions.h" | |
11 #include "components/favicon_base/fallback_icon_style.h" | |
12 #include "net/base/registry_controlled_domains/registry_controlled_domain.h" | |
13 #include "third_party/skia/include/core/SkPaint.h" | |
14 #include "ui/base/l10n/l10n_util.h" | |
15 #include "ui/gfx/canvas.h" | |
16 #include "ui/gfx/codec/png_codec.h" | |
17 #include "ui/gfx/font_list.h" | |
18 #include "ui/gfx/geometry/rect.h" | |
19 #include "ui/gfx/geometry/size.h" | |
20 #include "url/gurl.h" | |
21 | |
22 namespace favicon_base { | |
23 | |
24 namespace { | |
25 | |
26 const int kMaxFallbackFaviconSize = 288; | |
stevenjb
2015/02/11 18:04:37
nit: document reason for '288'. "Arbitrary maximum
huangs
2015/02/11 20:28:38
Done.
| |
27 | |
28 // Returns a single character to represent a page URL. To do this we take the | |
29 // first letter in a domain's name and make it upper case. | |
30 // TODO(huangs): Handle non-ASCII ("xn--") domain names. | |
31 base::string16 GetFallbackIconText(const GURL& url) { | |
32 std::string domain = net::registry_controlled_domains::GetDomainAndRegistry( | |
33 url, net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES); | |
34 return domain.empty() ? base::string16() : | |
35 base::i18n::ToUpper(base::ASCIIToUTF16(domain.substr(0, 1))); | |
36 } | |
37 | |
38 } // namespace | |
39 | |
40 FallbackIconService::FallbackIconService( | |
41 const std::vector<std::string>& font_list) | |
42 : font_list_(font_list) { | |
43 } | |
44 | |
45 FallbackIconService::~FallbackIconService() { | |
46 } | |
47 | |
48 std::vector<unsigned char> FallbackIconService::RenderFallbackIconBitmap( | |
49 const GURL& icon_url, | |
50 int size, | |
51 const FallbackIconStyle& style) { | |
52 int size_to_use = std::min(kMaxFallbackFaviconSize, size); | |
53 gfx::Canvas canvas(gfx::Size(size_to_use, size_to_use), 1.0f, false); | |
54 DrawFallbackIcon(icon_url, size_to_use, style, &canvas); | |
55 | |
56 std::vector<unsigned char> bitmap_data; | |
57 if (!gfx::PNGCodec::EncodeBGRASkBitmap(canvas.ExtractImageRep().sk_bitmap(), | |
58 false, &bitmap_data)) { | |
59 bitmap_data.clear(); | |
60 } | |
61 return bitmap_data; | |
62 } | |
63 | |
64 void FallbackIconService::DrawFallbackIcon(const GURL& icon_url, | |
65 int size, | |
66 const FallbackIconStyle& style, | |
67 gfx::Canvas* canvas) { | |
68 const int kOffsetX = 0; | |
69 const int kOffsetY = 0; | |
70 SkPaint paint; | |
71 paint.setStyle(SkPaint::kFill_Style); | |
72 paint.setAntiAlias(true); | |
73 | |
74 // Draw a filled, colored rounded square. | |
75 paint.setColor(style.background_color); | |
76 int corner_radius = static_cast<int>(size * style.roundness * 0.5 + 0.5); | |
77 canvas->DrawRoundRect( | |
78 gfx::Rect(kOffsetX, kOffsetY, size, size), corner_radius, paint); | |
79 | |
80 // Draw text. | |
81 base::string16 icon_text = GetFallbackIconText(icon_url); | |
82 if (!icon_text.empty()) { | |
stevenjb
2015/02/11 18:04:37
nit: this could be an early exit
huangs
2015/02/11 20:28:38
Done.
| |
83 int font_size = static_cast<int>(size * style.font_size_ratio); | |
84 if (font_size > 0) { | |
stevenjb
2015/02/11 18:04:37
nit: this too
huangs
2015/02/11 20:28:38
Done.
| |
85 // TODO(huangs): See how expensive gfx::FontList() is, and possibly cache. | |
86 canvas->DrawStringRectWithFlags( | |
87 icon_text, | |
88 gfx::FontList(font_list_, gfx::Font::NORMAL, font_size), | |
89 style.text_color, | |
90 gfx::Rect(kOffsetX, kOffsetY, size, size), | |
91 gfx::Canvas::TEXT_ALIGN_CENTER); | |
92 } | |
93 } | |
94 } | |
95 | |
96 } // namespace favicon_base | |
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