OLD | NEW |
| (Empty) |
1 /* | |
2 * Copyright (c) 2006, 2007, 2008, Google Inc. All rights reserved. | |
3 * | |
4 * Redistribution and use in source and binary forms, with or without | |
5 * modification, are permitted provided that the following conditions are | |
6 * met: | |
7 * | |
8 * * Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * * Redistributions in binary form must reproduce the above | |
11 * copyright notice, this list of conditions and the following disclaimer | |
12 * in the documentation and/or other materials provided with the | |
13 * distribution. | |
14 * * Neither the name of Google Inc. nor the names of its | |
15 * contributors may be used to endorse or promote products derived from | |
16 * this software without specific prior written permission. | |
17 * | |
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 */ | |
30 | |
31 #include "config.h" | |
32 #include "public/platform/Platform.h" | |
33 | |
34 #include "SkTypeface.h" | |
35 #include "platform/LayoutTestSupport.h" | |
36 #include "platform/RuntimeEnabledFeatures.h" | |
37 #include "platform/fonts/harfbuzz/FontPlatformDataHarfBuzz.h" | |
38 #include "public/platform/linux/WebFontInfo.h" | |
39 #include "public/platform/linux/WebFontRenderStyle.h" | |
40 #include "public/platform/linux/WebSandboxSupport.h" | |
41 | |
42 namespace WebCore { | |
43 | |
44 static SkPaint::Hinting skiaHinting = SkPaint::kNormal_Hinting; | |
45 static bool useSkiaAutoHint = true; | |
46 static bool useSkiaBitmaps = true; | |
47 static bool useSkiaAntiAlias = true; | |
48 static bool useSkiaSubpixelRendering = false; | |
49 | |
50 void FontPlatformData::setHinting(SkPaint::Hinting hinting) | |
51 { | |
52 skiaHinting = hinting; | |
53 } | |
54 | |
55 void FontPlatformData::setAutoHint(bool useAutoHint) | |
56 { | |
57 useSkiaAutoHint = useAutoHint; | |
58 } | |
59 | |
60 void FontPlatformData::setUseBitmaps(bool useBitmaps) | |
61 { | |
62 useSkiaBitmaps = useBitmaps; | |
63 } | |
64 | |
65 void FontPlatformData::setAntiAlias(bool useAntiAlias) | |
66 { | |
67 useSkiaAntiAlias = useAntiAlias; | |
68 } | |
69 | |
70 void FontPlatformData::setSubpixelRendering(bool useSubpixelRendering) | |
71 { | |
72 useSkiaSubpixelRendering = useSubpixelRendering; | |
73 } | |
74 | |
75 void FontPlatformData::setupPaint(SkPaint* paint, GraphicsContext*) const | |
76 { | |
77 paint->setAntiAlias(m_style.useAntiAlias); | |
78 paint->setHinting(static_cast<SkPaint::Hinting>(m_style.hintStyle)); | |
79 paint->setEmbeddedBitmapText(m_style.useBitmaps); | |
80 paint->setAutohinted(m_style.useAutoHint); | |
81 if (m_style.useAntiAlias) | |
82 paint->setLCDRenderText(m_style.useSubpixelRendering); | |
83 | |
84 // TestRunner specifically toggles the subpixel positioning flag. | |
85 if (RuntimeEnabledFeatures::subpixelFontScalingEnabled() | |
86 && paint->getHinting() != SkPaint::kFull_Hinting | |
87 && !LayoutTestSupport::isRunningLayoutTest()) | |
88 paint->setSubpixelText(true); | |
89 else | |
90 paint->setSubpixelText(m_style.useSubpixelPositioning); | |
91 | |
92 const float ts = m_textSize >= 0 ? m_textSize : 12; | |
93 paint->setTextSize(SkFloatToScalar(ts)); | |
94 paint->setTypeface(m_typeface.get()); | |
95 paint->setFakeBoldText(m_syntheticBold); | |
96 paint->setTextSkewX(m_syntheticItalic ? -SK_Scalar1 / 4 : 0); | |
97 } | |
98 | |
99 | |
100 static inline void getRenderStyleForStrike(FontRenderStyle& fontRenderStyle, con
st char* font, int sizeAndStyle) | |
101 { | |
102 blink::WebFontRenderStyle style; | |
103 | |
104 #if OS(ANDROID) | |
105 style.setDefaults(); | |
106 #else | |
107 if (!font || !*font) | |
108 style.setDefaults(); // It's probably a webfont. Take the system default
s. | |
109 else if (blink::Platform::current()->sandboxSupport()) | |
110 blink::Platform::current()->sandboxSupport()->getRenderStyleForStrike(fo
nt, sizeAndStyle, &style); | |
111 else | |
112 blink::WebFontInfo::renderStyleForStrike(font, sizeAndStyle, &style); | |
113 #endif | |
114 | |
115 style.toFontRenderStyle(&fontRenderStyle); | |
116 } | |
117 | |
118 void FontPlatformData::querySystemForRenderStyle(bool useSkiaSubpixelPositioning
) | |
119 { | |
120 getRenderStyleForStrike(m_style, m_family.data(), (((int)m_textSize) << 2) |
(m_typeface->style() & 3)); | |
121 | |
122 // Fix FontRenderStyle::NoPreference to actual styles. | |
123 if (m_style.useAntiAlias == FontRenderStyle::NoPreference) | |
124 m_style.useAntiAlias = useSkiaAntiAlias; | |
125 | |
126 if (!m_style.useHinting) | |
127 m_style.hintStyle = SkPaint::kNo_Hinting; | |
128 else if (m_style.useHinting == FontRenderStyle::NoPreference) | |
129 m_style.hintStyle = skiaHinting; | |
130 | |
131 if (m_style.useBitmaps == FontRenderStyle::NoPreference) | |
132 m_style.useBitmaps = useSkiaBitmaps; | |
133 if (m_style.useAutoHint == FontRenderStyle::NoPreference) | |
134 m_style.useAutoHint = useSkiaAutoHint; | |
135 if (m_style.useAntiAlias == FontRenderStyle::NoPreference) | |
136 m_style.useAntiAlias = useSkiaAntiAlias; | |
137 if (m_style.useSubpixelRendering == FontRenderStyle::NoPreference) | |
138 m_style.useSubpixelRendering = useSkiaSubpixelRendering; | |
139 | |
140 // TestRunner specifically toggles the subpixel positioning flag. | |
141 if (m_style.useSubpixelPositioning == FontRenderStyle::NoPreference | |
142 || LayoutTestSupport::isRunningLayoutTest()) | |
143 m_style.useSubpixelPositioning = useSkiaSubpixelPositioning; | |
144 } | |
145 | |
146 bool FontPlatformData::defaultUseSubpixelPositioning() | |
147 { | |
148 return FontDescription::subpixelPositioning(); | |
149 } | |
150 | |
151 } // namespace WebCore | |
OLD | NEW |