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 "FontRenderingMode.h" 30 #include "FontSmoothingMode.h" 31 #include "FontTraitsMask.h" 32 #include "TextRenderingMode.h" 33 34 namespace WebCore { 35 36 enum FontWeight { 37 FontWeight100, 38 FontWeight200, 39 FontWeight300, 40 FontWeight400, 41 FontWeight500, 42 FontWeight600, 43 FontWeight700, 44 FontWeight800, 45 FontWeight900, 46 FontWeightNormal = FontWeight400, 47 FontWeightBold = FontWeight700 48 }; 49 50 class FontDescription { 51 public: 52 enum GenericFamilyType { NoFamily, StandardFamily, SerifFamily, SansSerifFamily, 53 MonospaceFamily, CursiveFamily, FantasyFamily }; 54 FontDescription()55 FontDescription() 56 : m_specifiedSize(0) 57 , m_computedSize(0) 58 , m_italic(false) 59 , m_smallCaps(false) 60 , m_isAbsoluteSize(false) 61 , m_weight(FontWeightNormal) 62 , m_genericFamily(NoFamily) 63 , m_usePrinterFont(false) 64 , m_renderingMode(NormalRenderingMode) 65 , m_keywordSize(0) 66 , m_fontSmoothing(AutoSmoothing) 67 , m_textRendering(AutoTextRendering) 68 { 69 } 70 71 bool operator==(const FontDescription&) const; 72 bool operator!=(const FontDescription& other) const { return !(*this == other); } 73 family()74 const FontFamily& family() const { return m_familyList; } firstFamily()75 FontFamily& firstFamily() { return m_familyList; } specifiedSize()76 float specifiedSize() const { return m_specifiedSize; } computedSize()77 float computedSize() const { return m_computedSize; } italic()78 bool italic() const { return m_italic; } computedPixelSize()79 int computedPixelSize() const { return int(m_computedSize + 0.5f); } smallCaps()80 bool smallCaps() const { return m_smallCaps; } isAbsoluteSize()81 bool isAbsoluteSize() const { return m_isAbsoluteSize; } weight()82 FontWeight weight() const { return static_cast<FontWeight>(m_weight); } 83 FontWeight lighterWeight() const; 84 FontWeight bolderWeight() const; genericFamily()85 GenericFamilyType genericFamily() const { return static_cast<GenericFamilyType>(m_genericFamily); } usePrinterFont()86 bool usePrinterFont() const { return m_usePrinterFont; } 87 // only use fixed default size when there is only one font family, and that family is "monospace" useFixedDefaultSize()88 bool useFixedDefaultSize() const { return genericFamily() == MonospaceFamily && !family().next() && family().family() == "-webkit-monospace"; } renderingMode()89 FontRenderingMode renderingMode() const { return static_cast<FontRenderingMode>(m_renderingMode); } keywordSize()90 unsigned keywordSize() const { return m_keywordSize; } fontSmoothing()91 FontSmoothingMode fontSmoothing() const { return static_cast<FontSmoothingMode>(m_fontSmoothing); } textRenderingMode()92 TextRenderingMode textRenderingMode() const { return static_cast<TextRenderingMode>(m_textRendering); } 93 94 FontTraitsMask traitsMask() const; 95 setFamily(const FontFamily & family)96 void setFamily(const FontFamily& family) { m_familyList = family; } setComputedSize(float s)97 void setComputedSize(float s) { m_computedSize = s; } setSpecifiedSize(float s)98 void setSpecifiedSize(float s) { m_specifiedSize = s; } setItalic(bool i)99 void setItalic(bool i) { m_italic = i; } setSmallCaps(bool c)100 void setSmallCaps(bool c) { m_smallCaps = c; } setIsAbsoluteSize(bool s)101 void setIsAbsoluteSize(bool s) { m_isAbsoluteSize = s; } setWeight(FontWeight w)102 void setWeight(FontWeight w) { m_weight = w; } setGenericFamily(GenericFamilyType genericFamily)103 void setGenericFamily(GenericFamilyType genericFamily) { m_genericFamily = genericFamily; } setUsePrinterFont(bool p)104 void setUsePrinterFont(bool p) { m_usePrinterFont = p; } setRenderingMode(FontRenderingMode mode)105 void setRenderingMode(FontRenderingMode mode) { m_renderingMode = mode; } setKeywordSize(unsigned s)106 void setKeywordSize(unsigned s) { m_keywordSize = s; } setFontSmoothing(FontSmoothingMode smoothing)107 void setFontSmoothing(FontSmoothingMode smoothing) { m_fontSmoothing = smoothing; } setTextRenderingMode(TextRenderingMode rendering)108 void setTextRenderingMode(TextRenderingMode rendering) { m_textRendering = rendering; } 109 110 private: 111 FontFamily m_familyList; // The list of font families to be used. 112 113 float m_specifiedSize; // Specified CSS value. Independent of rendering issues such as integer 114 // rounding, minimum font sizes, and zooming. 115 float m_computedSize; // Computed size adjusted for the minimum font size and the zoom factor. 116 117 bool m_italic : 1; 118 bool m_smallCaps : 1; 119 bool m_isAbsoluteSize : 1; // Whether or not CSS specified an explicit size 120 // (logical sizes like "medium" don't count). 121 unsigned m_weight : 8; // FontWeight 122 unsigned m_genericFamily : 3; // GenericFamilyType 123 bool m_usePrinterFont : 1; 124 125 unsigned m_renderingMode : 1; // Used to switch between CG and GDI text on Windows. 126 127 unsigned m_keywordSize : 4; // We cache whether or not a font is currently represented by a CSS keyword (e.g., medium). If so, 128 // then we can accurately translate across different generic families to adjust for different preference settings 129 // (e.g., 13px monospace vs. 16px everything else). Sizes are 1-8 (like the HTML size values for <font>). 130 131 unsigned m_fontSmoothing : 2; // FontSmoothingMode 132 unsigned m_textRendering : 2; // TextRenderingMode 133 }; 134 135 inline bool FontDescription::operator==(const FontDescription& other) const 136 { 137 return m_familyList == other.m_familyList 138 && m_specifiedSize == other.m_specifiedSize 139 && m_computedSize == other.m_computedSize 140 && m_italic == other.m_italic 141 && m_smallCaps == other.m_smallCaps 142 && m_isAbsoluteSize == other.m_isAbsoluteSize 143 && m_weight == other.m_weight 144 && m_genericFamily == other.m_genericFamily 145 && m_usePrinterFont == other.m_usePrinterFont 146 && m_renderingMode == other.m_renderingMode 147 && m_keywordSize == other.m_keywordSize 148 && m_fontSmoothing == other.m_fontSmoothing 149 && m_textRendering == other.m_textRendering; 150 } 151 152 } 153 154 #endif 155