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1 // Copyright (c) 2012 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 "content/renderer/render_view_impl.h" | |
6 | |
7 #include "content/public/common/renderer_preferences.h" | |
8 #include "third_party/WebKit/Source/WebKit/chromium/public/linux/WebFontInfo.h" | |
9 #include "third_party/WebKit/Source/WebKit/chromium/public/linux/WebFontRenderin
g.h" | |
10 | |
11 using WebKit::WebFontInfo; | |
12 using WebKit::WebFontRendering; | |
13 | |
14 static SkPaint::Hinting RendererPreferencesToSkiaHinting( | |
15 const content::RendererPreferences& prefs) { | |
16 if (!prefs.should_antialias_text) { | |
17 // When anti-aliasing is off, GTK maps all non-zero hinting settings to | |
18 // 'Normal' hinting so we do the same. Otherwise, folks who have 'Slight' | |
19 // hinting selected will see readable text in everything expect Chromium. | |
20 switch (prefs.hinting) { | |
21 case content::RENDERER_PREFERENCES_HINTING_NONE: | |
22 return SkPaint::kNo_Hinting; | |
23 case content::RENDERER_PREFERENCES_HINTING_SYSTEM_DEFAULT: | |
24 case content::RENDERER_PREFERENCES_HINTING_SLIGHT: | |
25 case content::RENDERER_PREFERENCES_HINTING_MEDIUM: | |
26 case content::RENDERER_PREFERENCES_HINTING_FULL: | |
27 return SkPaint::kNormal_Hinting; | |
28 default: | |
29 NOTREACHED(); | |
30 return SkPaint::kNormal_Hinting; | |
31 } | |
32 } | |
33 | |
34 switch (prefs.hinting) { | |
35 case content::RENDERER_PREFERENCES_HINTING_SYSTEM_DEFAULT: | |
36 return SkPaint::kNormal_Hinting; | |
37 case content::RENDERER_PREFERENCES_HINTING_NONE: | |
38 return SkPaint::kNo_Hinting; | |
39 case content::RENDERER_PREFERENCES_HINTING_SLIGHT: | |
40 return SkPaint::kSlight_Hinting; | |
41 case content::RENDERER_PREFERENCES_HINTING_MEDIUM: | |
42 return SkPaint::kNormal_Hinting; | |
43 case content::RENDERER_PREFERENCES_HINTING_FULL: | |
44 return SkPaint::kFull_Hinting; | |
45 default: | |
46 NOTREACHED(); | |
47 return SkPaint::kNormal_Hinting; | |
48 } | |
49 } | |
50 | |
51 static SkFontHost::LCDOrder RendererPreferencesToSkiaLCDOrder( | |
52 content::RendererPreferencesSubpixelRenderingEnum subpixel) { | |
53 switch (subpixel) { | |
54 case content::RENDERER_PREFERENCES_SUBPIXEL_RENDERING_SYSTEM_DEFAULT: | |
55 case content::RENDERER_PREFERENCES_SUBPIXEL_RENDERING_NONE: | |
56 case content::RENDERER_PREFERENCES_SUBPIXEL_RENDERING_RGB: | |
57 case content::RENDERER_PREFERENCES_SUBPIXEL_RENDERING_VRGB: | |
58 return SkFontHost::kRGB_LCDOrder; | |
59 case content::RENDERER_PREFERENCES_SUBPIXEL_RENDERING_BGR: | |
60 case content::RENDERER_PREFERENCES_SUBPIXEL_RENDERING_VBGR: | |
61 return SkFontHost::kBGR_LCDOrder; | |
62 default: | |
63 NOTREACHED(); | |
64 return SkFontHost::kRGB_LCDOrder; | |
65 } | |
66 } | |
67 | |
68 static SkFontHost::LCDOrientation | |
69 RendererPreferencesToSkiaLCDOrientation( | |
70 content::RendererPreferencesSubpixelRenderingEnum subpixel) { | |
71 switch (subpixel) { | |
72 case content::RENDERER_PREFERENCES_SUBPIXEL_RENDERING_SYSTEM_DEFAULT: | |
73 case content::RENDERER_PREFERENCES_SUBPIXEL_RENDERING_NONE: | |
74 case content::RENDERER_PREFERENCES_SUBPIXEL_RENDERING_RGB: | |
75 case content::RENDERER_PREFERENCES_SUBPIXEL_RENDERING_BGR: | |
76 return SkFontHost::kHorizontal_LCDOrientation; | |
77 case content::RENDERER_PREFERENCES_SUBPIXEL_RENDERING_VRGB: | |
78 case content::RENDERER_PREFERENCES_SUBPIXEL_RENDERING_VBGR: | |
79 return SkFontHost::kVertical_LCDOrientation; | |
80 default: | |
81 NOTREACHED(); | |
82 return SkFontHost::kHorizontal_LCDOrientation; | |
83 } | |
84 } | |
85 | |
86 static bool RendererPreferencesToAntiAliasFlag( | |
87 const content::RendererPreferences& prefs) { | |
88 return prefs.should_antialias_text; | |
89 } | |
90 | |
91 static bool RendererPreferencesToSubpixelRenderingFlag( | |
92 const content::RendererPreferences& prefs) { | |
93 if (prefs.subpixel_rendering != | |
94 content::RENDERER_PREFERENCES_SUBPIXEL_RENDERING_SYSTEM_DEFAULT && | |
95 prefs.subpixel_rendering != | |
96 content::RENDERER_PREFERENCES_SUBPIXEL_RENDERING_NONE) { | |
97 return true; | |
98 } | |
99 return false; | |
100 } | |
101 | |
102 void RenderViewImpl::UpdateFontRenderingFromRendererPrefs() { | |
103 const content::RendererPreferences& prefs = renderer_preferences_; | |
104 WebFontRendering::setHinting(RendererPreferencesToSkiaHinting(prefs)); | |
105 WebFontRendering::setLCDOrder( | |
106 RendererPreferencesToSkiaLCDOrder(prefs.subpixel_rendering)); | |
107 WebFontRendering::setLCDOrientation( | |
108 RendererPreferencesToSkiaLCDOrientation(prefs.subpixel_rendering)); | |
109 WebFontRendering::setAntiAlias(RendererPreferencesToAntiAliasFlag(prefs)); | |
110 WebFontRendering::setSubpixelRendering( | |
111 RendererPreferencesToSubpixelRenderingFlag(prefs)); | |
112 WebFontRendering::setSubpixelPositioning(prefs.use_subpixel_positioning); | |
113 WebFontInfo::setSubpixelPositioning(prefs.use_subpixel_positioning); | |
114 } | |
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