1 /* 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. 3 * Copyright (C) 2014 Google Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef FontTraits_h 28 #define FontTraits_h 29 30 #include "wtf/Assertions.h" 31 32 namespace blink { 33 34 enum FontWeight { 35 FontWeight100, 36 FontWeight200, 37 FontWeight300, 38 FontWeight400, 39 FontWeight500, 40 FontWeight600, 41 FontWeight700, 42 FontWeight800, 43 FontWeight900, 44 FontWeightNormal = FontWeight400, 45 FontWeightBold = FontWeight700 46 }; 47 48 // Numeric values matching OS/2 & Windows Metrics usWidthClass table. 49 // https://www.microsoft.com/typography/otspec/os2.htm 50 enum FontStretch { 51 FontStretchUltraCondensed = 1, 52 FontStretchExtraCondensed = 2, 53 FontStretchCondensed = 3, 54 FontStretchSemiCondensed = 4, 55 FontStretchNormal = 5, 56 FontStretchSemiExpanded = 6, 57 FontStretchExpanded = 7, 58 FontStretchExtraExpanded = 8, 59 FontStretchUltraExpanded = 9 60 }; 61 62 enum FontStyle { 63 FontStyleNormal = 0, 64 FontStyleItalic = 1 65 }; 66 67 enum FontVariant { 68 FontVariantNormal = 0, 69 FontVariantSmallCaps = 1 70 }; 71 72 typedef unsigned FontTraitsBitfield; 73 74 struct FontTraits { FontTraitsFontTraits75 FontTraits(FontStyle style, FontVariant variant, FontWeight weight, FontStretch stretch) 76 { 77 m_traits.m_style = style; 78 m_traits.m_variant = variant; 79 m_traits.m_weight = weight; 80 m_traits.m_stretch = stretch; 81 m_traits.m_filler = 0; 82 ASSERT(!(m_bitfield >> 10)); 83 } FontTraitsFontTraits84 FontTraits(FontTraitsBitfield bitfield) 85 : m_bitfield(bitfield) 86 { 87 ASSERT(!m_traits.m_filler); 88 ASSERT(!(m_bitfield >> 10)); 89 } styleFontTraits90 FontStyle style() const { return static_cast<FontStyle>(m_traits.m_style); } variantFontTraits91 FontVariant variant() const { return static_cast<FontVariant>(m_traits.m_variant); } weightFontTraits92 FontWeight weight() const { return static_cast<FontWeight>(m_traits.m_weight); } stretchFontTraits93 FontStretch stretch() const { return static_cast<FontStretch>(m_traits.m_stretch); } bitfieldFontTraits94 FontTraitsBitfield bitfield() const { return m_bitfield; } 95 96 union { 97 struct { 98 unsigned m_style : 1; 99 unsigned m_variant : 1; 100 unsigned m_weight : 4; 101 unsigned m_stretch : 4; 102 unsigned m_filler : 22; 103 } m_traits; 104 FontTraitsBitfield m_bitfield; 105 }; 106 }; 107 108 } // namespace blink 109 #endif // FontTraits_h 110