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Issue 886163003: [Favicon] Add FallbackIconStyle and FallbackIconService. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 10 months ago
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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/favicon_types.h"
12 #include "grit/platform_locale_settings.h"
13 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
14 #include "third_party/skia/include/core/SkPaint.h"
15 #include "ui/base/l10n/l10n_util.h"
16 #include "ui/gfx/canvas.h"
17 #include "ui/gfx/codec/png_codec.h"
18 #include "ui/gfx/font_list.h"
19 #include "ui/gfx/geometry/rect.h"
20 #include "ui/gfx/geometry/size.h"
21 #include "url/gurl.h"
22
23 namespace favicon_base {
24
25 namespace {
26
27 const int kMaxFallbackFaviconSize = 288;
28
29 // Returns a single character to represent a page URL. To do this we take the
30 // first letter in a domain's name and make it upper case.
31 // TODO(huangs): Handle non-ASCII ("xn--") domain names.
32 base::string16 GetFallbackIconText(const GURL& url) {
33 std::string domain = net::registry_controlled_domains::GetDomainAndRegistry(
34 url, net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES);
35 return domain.empty() ? base::string16() :
36 base::i18n::ToUpper(base::ASCIIToUTF16(std::string(1, domain[0])));
Ryan Sleevi 2015/02/03 00:23:17 nit: base::ASCIIToUTF16(domain.substr(0, 1));
huangs 2015/02/04 03:29:36 Done.
37 }
38
39 } // namespace
40
41 FallbackIconService::FallbackIconService() {
42 #if defined(OS_CHROMEOS)
43 const std::string kChromeOSFontFamily = "Noto Sans";
44 std::string font_name = kChromeOSFontFamily;
45 #else
46 std::string font_name =
47 l10n_util::GetStringUTF8(IDS_SANS_SERIF_FONT_FAMILY);
48 #endif
49 fallback_icon_font_list_.push_back(font_name);
50 }
51
52 FallbackIconService::~FallbackIconService() {
53 }
54
55 std::vector<unsigned char> FallbackIconService::RenderFallbackIconBitmap(
56 const GURL& icon_url,
57 int size,
58 const FallbackIconStyle& style) {
59 int size_to_use = std::min(kMaxFallbackFaviconSize, size);
60 gfx::Canvas canvas(gfx::Size(size_to_use, size_to_use), 1.0f, false);
61 DrawFallbackIcon(icon_url, size_to_use, style, &canvas);
62
63 std::vector<unsigned char> bitmap_data;
64 if (!gfx::PNGCodec::EncodeBGRASkBitmap(canvas.ExtractImageRep().sk_bitmap(),
65 false, &bitmap_data)) {
66 bitmap_data.clear();
67 }
68 return bitmap_data;
69 }
70
71 void FallbackIconService::DrawFallbackIcon(const GURL& icon_url,
72 int size,
73 const FallbackIconStyle& style,
74 gfx::Canvas* canvas) {
75 const int kOffsetX = 0;
76 const int kOffsetY = 0;
77 SkPaint paint;
78 paint.setStyle(SkPaint::kFill_Style);
79 paint.setAntiAlias(true);
80
81 // Draw a filled, colored rounded square.
82 paint.setColor(style.background_color);
83 int corner_radius = static_cast<int>(size * style.roundness * 0.5 + 0.5);
84 canvas->DrawRoundRect(
85 gfx::Rect(kOffsetX, kOffsetY, size, size), corner_radius, paint);
86
87 // Draw text.
88 base::string16 icon_text = GetFallbackIconText(icon_url);
89 if (!icon_text.empty()) {
90 int font_size = static_cast<int>(size * style.font_size_ratio);
91 if (font_size > 0) {
92 // TODO(huangs): See how expensive gfx::FontList() is, and possibly cache.
93 canvas->DrawStringRectWithFlags(
94 icon_text,
95 gfx::FontList(fallback_icon_font_list_, gfx::Font::NORMAL, font_size),
96 style.text_color,
97 gfx::Rect(kOffsetX, kOffsetY, size, size),
98 gfx::Canvas::TEXT_ALIGN_CENTER);
99 }
100 }
101 }
102
103 } // namespace favicon_base
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