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 "platform/fonts/harfbuzz/FontPlatformDataHarfBuzz.h"
33
34 #include "SkTypeface.h"
35 #include "platform/fonts/harfbuzz/HarfBuzzFace.h"
36 #include "wtf/text/WTFString.h"
37
38 namespace WebCore {
39
FontPlatformData(WTF::HashTableDeletedValueType)40 FontPlatformData::FontPlatformData(WTF::HashTableDeletedValueType)
41 : m_textSize(0)
42 , m_syntheticBold(false)
43 , m_syntheticItalic(false)
44 , m_orientation(Horizontal)
45 , m_isHashTableDeletedValue(true)
46 #if OS(WIN)
47 , m_paintTextFlags(0)
48 , m_minSizeForAntiAlias(0)
49 , m_useSubpixelPositioning(false)
50 #endif
51 {
52 }
53
FontPlatformData()54 FontPlatformData::FontPlatformData()
55 : m_textSize(0)
56 , m_syntheticBold(false)
57 , m_syntheticItalic(false)
58 , m_orientation(Horizontal)
59 , m_isHashTableDeletedValue(false)
60 #if OS(WIN)
61 , m_paintTextFlags(0)
62 , m_minSizeForAntiAlias(0)
63 , m_useSubpixelPositioning(false)
64 #endif
65 {
66 }
67
FontPlatformData(float textSize,bool syntheticBold,bool syntheticItalic)68 FontPlatformData::FontPlatformData(float textSize, bool syntheticBold, bool syntheticItalic)
69 : m_textSize(textSize)
70 , m_syntheticBold(syntheticBold)
71 , m_syntheticItalic(syntheticItalic)
72 , m_orientation(Horizontal)
73 , m_isHashTableDeletedValue(false)
74 #if OS(WIN)
75 , m_paintTextFlags(0)
76 , m_minSizeForAntiAlias(0)
77 , m_useSubpixelPositioning(false)
78 #endif
79 {
80 }
81
FontPlatformData(const FontPlatformData & src)82 FontPlatformData::FontPlatformData(const FontPlatformData& src)
83 : m_typeface(src.m_typeface)
84 #if !OS(WIN)
85 , m_family(src.m_family)
86 #endif
87 , m_textSize(src.m_textSize)
88 , m_syntheticBold(src.m_syntheticBold)
89 , m_syntheticItalic(src.m_syntheticItalic)
90 , m_orientation(src.m_orientation)
91 , m_style(src.m_style)
92 , m_harfBuzzFace(nullptr)
93 , m_isHashTableDeletedValue(false)
94 #if OS(WIN)
95 , m_paintTextFlags(src.m_paintTextFlags)
96 , m_minSizeForAntiAlias(src.m_minSizeForAntiAlias)
97 , m_useSubpixelPositioning(src.m_useSubpixelPositioning)
98 #endif
99 {
100 }
101
FontPlatformData(PassRefPtr<SkTypeface> tf,const char * family,float textSize,bool syntheticBold,bool syntheticItalic,FontOrientation orientation,bool subpixelTextPosition)102 FontPlatformData::FontPlatformData(PassRefPtr<SkTypeface> tf, const char* family, float textSize, bool syntheticBold, bool syntheticItalic, FontOrientation orientation, bool subpixelTextPosition)
103 : m_typeface(tf)
104 #if !OS(WIN)
105 , m_family(family)
106 #endif
107 , m_textSize(textSize)
108 , m_syntheticBold(syntheticBold)
109 , m_syntheticItalic(syntheticItalic)
110 , m_orientation(orientation)
111 , m_isHashTableDeletedValue(false)
112 #if OS(WIN)
113 , m_paintTextFlags(0)
114 , m_minSizeForAntiAlias(0)
115 , m_useSubpixelPositioning(subpixelTextPosition)
116 #endif
117 {
118 querySystemForRenderStyle(subpixelTextPosition);
119 }
120
FontPlatformData(const FontPlatformData & src,float textSize)121 FontPlatformData::FontPlatformData(const FontPlatformData& src, float textSize)
122 : m_typeface(src.m_typeface)
123 #if !OS(WIN)
124 , m_family(src.m_family)
125 #endif
126 , m_textSize(textSize)
127 , m_syntheticBold(src.m_syntheticBold)
128 , m_syntheticItalic(src.m_syntheticItalic)
129 , m_orientation(src.m_orientation)
130 , m_harfBuzzFace(nullptr)
131 , m_isHashTableDeletedValue(false)
132 #if OS(WIN)
133 , m_paintTextFlags(src.m_paintTextFlags)
134 , m_minSizeForAntiAlias(src.m_minSizeForAntiAlias)
135 , m_useSubpixelPositioning(src.m_useSubpixelPositioning)
136 #endif
137 {
138 querySystemForRenderStyle(FontDescription::subpixelPositioning());
139 }
140
~FontPlatformData()141 FontPlatformData::~FontPlatformData()
142 {
143 }
144
operator =(const FontPlatformData & src)145 FontPlatformData& FontPlatformData::operator=(const FontPlatformData& src)
146 {
147 m_typeface = src.m_typeface;
148 #if !OS(WIN)
149 m_family = src.m_family;
150 #endif
151 m_textSize = src.m_textSize;
152 m_syntheticBold = src.m_syntheticBold;
153 m_syntheticItalic = src.m_syntheticItalic;
154 m_harfBuzzFace = nullptr;
155 m_orientation = src.m_orientation;
156 m_style = src.m_style;
157 #if OS(WIN)
158 m_paintTextFlags = 0;
159 m_minSizeForAntiAlias = src.m_minSizeForAntiAlias;
160 m_useSubpixelPositioning = src.m_useSubpixelPositioning;
161 #endif
162
163 return *this;
164 }
165
166 #ifndef NDEBUG
description() const167 String FontPlatformData::description() const
168 {
169 return String();
170 }
171 #endif
172
uniqueID() const173 SkFontID FontPlatformData::uniqueID() const
174 {
175 return m_typeface->uniqueID();
176 }
177
fontFamilyName() const178 String FontPlatformData::fontFamilyName() const
179 {
180 // FIXME(crbug.com/326582): come up with a proper way of handling SVG.
181 if (!this->typeface())
182 return "";
183 SkTypeface::LocalizedStrings* fontFamilyIterator = this->typeface()->createFamilyNameIterator();
184 SkTypeface::LocalizedString localizedString;
185 while (fontFamilyIterator->next(&localizedString) && !localizedString.fString.size()) { }
186 fontFamilyIterator->unref();
187 return String(localizedString.fString.c_str());
188 }
189
operator ==(const FontPlatformData & a) const190 bool FontPlatformData::operator==(const FontPlatformData& a) const
191 {
192 // If either of the typeface pointers are null then we test for pointer
193 // equality. Otherwise, we call SkTypeface::Equal on the valid pointers.
194 bool typefacesEqual;
195 if (!m_typeface || !a.m_typeface)
196 typefacesEqual = m_typeface == a.m_typeface;
197 else
198 typefacesEqual = SkTypeface::Equal(m_typeface.get(), a.m_typeface.get());
199
200 return typefacesEqual
201 && m_textSize == a.m_textSize
202 && m_syntheticBold == a.m_syntheticBold
203 && m_syntheticItalic == a.m_syntheticItalic
204 && m_orientation == a.m_orientation
205 && m_style == a.m_style
206 && m_isHashTableDeletedValue == a.m_isHashTableDeletedValue;
207 }
208
isFixedPitch() const209 bool FontPlatformData::isFixedPitch() const
210 {
211 return typeface() && typeface()->isFixedPitch();
212 }
213
harfBuzzFace() const214 HarfBuzzFace* FontPlatformData::harfBuzzFace() const
215 {
216 if (!m_harfBuzzFace)
217 m_harfBuzzFace = HarfBuzzFace::create(const_cast<FontPlatformData*>(this), uniqueID());
218
219 return m_harfBuzzFace.get();
220 }
221
222 } // namespace WebCore
223