1 /* 2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) 3 * (C) 2000 Antti Koivisto (koivisto@kde.org) 4 * (C) 2000 Dirk Mueller (mueller@kde.org) 5 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. 6 * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com> 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Library General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Library General Public License for more details. 17 * 18 * You should have received a copy of the GNU Library General Public License 19 * along with this library; see the file COPYING.LIother.m_ If not, write to 20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21 * Boston, MA 02110-1301, USm_ 22 * 23 */ 24 25 #ifndef FontDescription_h 26 #define FontDescription_h 27 28 #include "FontFamily.h" 29 #include "FontOrientation.h" 30 #include "FontRenderingMode.h" 31 #include "FontSmoothingMode.h" 32 #include "FontTraitsMask.h" 33 #include "FontWidthVariant.h" 34 #include "TextOrientation.h" 35 #include "TextRenderingMode.h" 36 37 namespace WebCore { 38 39 enum FontWeight { 40 FontWeight100, 41 FontWeight200, 42 FontWeight300, 43 FontWeight400, 44 FontWeight500, 45 FontWeight600, 46 FontWeight700, 47 FontWeight800, 48 FontWeight900, 49 FontWeightNormal = FontWeight400, 50 FontWeightBold = FontWeight700 51 }; 52 53 enum FontItalic { 54 FontItalicOff = 0, 55 FontItalicOn = 1 56 }; 57 58 enum FontSmallCaps { 59 FontSmallCapsOff = 0, 60 FontSmallCapsOn = 1 61 }; 62 63 class FontDescription { 64 public: 65 enum GenericFamilyType { NoFamily, StandardFamily, SerifFamily, SansSerifFamily, 66 MonospaceFamily, CursiveFamily, FantasyFamily }; 67 FontDescription()68 FontDescription() 69 : m_specifiedSize(0) 70 , m_computedSize(0) 71 , m_orientation(Horizontal) 72 , m_textOrientation(TextOrientationVerticalRight) 73 , m_widthVariant(RegularWidth) 74 , m_italic(FontItalicOff) 75 , m_smallCaps(FontSmallCapsOff) 76 , m_isAbsoluteSize(false) 77 , m_weight(FontWeightNormal) 78 , m_genericFamily(NoFamily) 79 , m_usePrinterFont(false) 80 , m_renderingMode(NormalRenderingMode) 81 , m_keywordSize(0) 82 , m_fontSmoothing(AutoSmoothing) 83 , m_textRendering(AutoTextRendering) 84 , m_isSpecifiedFont(false) 85 { 86 } 87 88 bool operator==(const FontDescription&) const; 89 bool operator!=(const FontDescription& other) const { return !(*this == other); } 90 family()91 const FontFamily& family() const { return m_familyList; } firstFamily()92 FontFamily& firstFamily() { return m_familyList; } specifiedSize()93 float specifiedSize() const { return m_specifiedSize; } computedSize()94 float computedSize() const { return m_computedSize; } italic()95 FontItalic italic() const { return static_cast<FontItalic>(m_italic); } computedPixelSize()96 int computedPixelSize() const { return int(m_computedSize + 0.5f); } smallCaps()97 FontSmallCaps smallCaps() const { return static_cast<FontSmallCaps>(m_smallCaps); } isAbsoluteSize()98 bool isAbsoluteSize() const { return m_isAbsoluteSize; } weight()99 FontWeight weight() const { return static_cast<FontWeight>(m_weight); } 100 FontWeight lighterWeight() const; 101 FontWeight bolderWeight() const; genericFamily()102 GenericFamilyType genericFamily() const { return static_cast<GenericFamilyType>(m_genericFamily); } usePrinterFont()103 bool usePrinterFont() const { return m_usePrinterFont; } 104 // only use fixed default size when there is only one font family, and that family is "monospace" useFixedDefaultSize()105 bool useFixedDefaultSize() const { return genericFamily() == MonospaceFamily && !family().next() && family().family() == "-webkit-monospace"; } renderingMode()106 FontRenderingMode renderingMode() const { return static_cast<FontRenderingMode>(m_renderingMode); } keywordSize()107 unsigned keywordSize() const { return m_keywordSize; } fontSmoothing()108 FontSmoothingMode fontSmoothing() const { return static_cast<FontSmoothingMode>(m_fontSmoothing); } textRenderingMode()109 TextRenderingMode textRenderingMode() const { return static_cast<TextRenderingMode>(m_textRendering); } 110 111 FontTraitsMask traitsMask() const; isSpecifiedFont()112 bool isSpecifiedFont() const { return m_isSpecifiedFont; } orientation()113 FontOrientation orientation() const { return m_orientation; } textOrientation()114 TextOrientation textOrientation() const { return m_textOrientation; } widthVariant()115 FontWidthVariant widthVariant() const { return m_widthVariant; } 116 setFamily(const FontFamily & family)117 void setFamily(const FontFamily& family) { m_familyList = family; } setComputedSize(float s)118 void setComputedSize(float s) { m_computedSize = s; } setSpecifiedSize(float s)119 void setSpecifiedSize(float s) { m_specifiedSize = s; } setItalic(FontItalic i)120 void setItalic(FontItalic i) { m_italic = i; } setItalic(bool i)121 void setItalic(bool i) { setItalic(i ? FontItalicOn : FontItalicOff); } setSmallCaps(FontSmallCaps c)122 void setSmallCaps(FontSmallCaps c) { m_smallCaps = c; } setSmallCaps(bool c)123 void setSmallCaps(bool c) { setSmallCaps(c ? FontSmallCapsOn : FontSmallCapsOff); } setIsAbsoluteSize(bool s)124 void setIsAbsoluteSize(bool s) { m_isAbsoluteSize = s; } setWeight(FontWeight w)125 void setWeight(FontWeight w) { m_weight = w; } setGenericFamily(GenericFamilyType genericFamily)126 void setGenericFamily(GenericFamilyType genericFamily) { m_genericFamily = genericFamily; } 127 #if PLATFORM(CHROMIUM) && OS(DARWIN) setUsePrinterFont(bool)128 void setUsePrinterFont(bool) { } 129 #else setUsePrinterFont(bool p)130 void setUsePrinterFont(bool p) { m_usePrinterFont = p; } 131 #endif setRenderingMode(FontRenderingMode mode)132 void setRenderingMode(FontRenderingMode mode) { m_renderingMode = mode; } setKeywordSize(unsigned s)133 void setKeywordSize(unsigned s) { m_keywordSize = s; } setFontSmoothing(FontSmoothingMode smoothing)134 void setFontSmoothing(FontSmoothingMode smoothing) { m_fontSmoothing = smoothing; } setTextRenderingMode(TextRenderingMode rendering)135 void setTextRenderingMode(TextRenderingMode rendering) { m_textRendering = rendering; } setIsSpecifiedFont(bool isSpecifiedFont)136 void setIsSpecifiedFont(bool isSpecifiedFont) { m_isSpecifiedFont = isSpecifiedFont; } setOrientation(FontOrientation orientation)137 void setOrientation(FontOrientation orientation) { m_orientation = orientation; } setTextOrientation(TextOrientation textOrientation)138 void setTextOrientation(TextOrientation textOrientation) { m_textOrientation = textOrientation; } setWidthVariant(FontWidthVariant widthVariant)139 void setWidthVariant(FontWidthVariant widthVariant) { m_widthVariant = widthVariant; } 140 141 private: 142 FontFamily m_familyList; // The list of font families to be used. 143 144 float m_specifiedSize; // Specified CSS value. Independent of rendering issues such as integer 145 // rounding, minimum font sizes, and zooming. 146 float m_computedSize; // Computed size adjusted for the minimum font size and the zoom factor. 147 148 FontOrientation m_orientation; // Whether the font is rendering on a horizontal line or a vertical line. 149 TextOrientation m_textOrientation; // Only used by vertical text. Determines the default orientation for non-ideograph glyphs. 150 151 FontWidthVariant m_widthVariant; 152 153 unsigned m_italic : 1; // FontItalic 154 unsigned m_smallCaps : 1; // FontSmallCaps 155 bool m_isAbsoluteSize : 1; // Whether or not CSS specified an explicit size 156 // (logical sizes like "medium" don't count). 157 unsigned m_weight : 8; // FontWeight 158 unsigned m_genericFamily : 3; // GenericFamilyType 159 bool m_usePrinterFont : 1; 160 161 unsigned m_renderingMode : 1; // Used to switch between CG and GDI text on Windows. 162 163 unsigned m_keywordSize : 4; // We cache whether or not a font is currently represented by a CSS keyword (e.g., medium). If so, 164 // then we can accurately translate across different generic families to adjust for different preference settings 165 // (e.g., 13px monospace vs. 16px everything else). Sizes are 1-8 (like the HTML size values for <font>). 166 167 unsigned m_fontSmoothing : 2; // FontSmoothingMode 168 unsigned m_textRendering : 2; // TextRenderingMode 169 bool m_isSpecifiedFont : 1; // True if a web page specifies a non-generic font family as the first font family. 170 }; 171 172 inline bool FontDescription::operator==(const FontDescription& other) const 173 { 174 return m_familyList == other.m_familyList 175 && m_specifiedSize == other.m_specifiedSize 176 && m_computedSize == other.m_computedSize 177 && m_italic == other.m_italic 178 && m_smallCaps == other.m_smallCaps 179 && m_isAbsoluteSize == other.m_isAbsoluteSize 180 && m_weight == other.m_weight 181 && m_genericFamily == other.m_genericFamily 182 && m_usePrinterFont == other.m_usePrinterFont 183 && m_renderingMode == other.m_renderingMode 184 && m_keywordSize == other.m_keywordSize 185 && m_fontSmoothing == other.m_fontSmoothing 186 && m_textRendering == other.m_textRendering 187 && m_isSpecifiedFont == other.m_isSpecifiedFont 188 && m_orientation == other.m_orientation 189 && m_textOrientation == other.m_textOrientation 190 && m_widthVariant == other.m_widthVariant; 191 } 192 193 } 194 195 #endif 196