| /* |
| * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
| * Copyright (C) 2014 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef FontTraits_h |
| #define FontTraits_h |
| |
| #include "wtf/Allocator.h" |
| #include "wtf/Assertions.h" |
| |
| namespace blink { |
| |
| enum FontWeight { |
| FontWeight100 = 0, |
| FontWeight200 = 1, |
| FontWeight300 = 2, |
| FontWeight400 = 3, |
| FontWeight500 = 4, |
| FontWeight600 = 5, |
| FontWeight700 = 6, |
| FontWeight800 = 7, |
| FontWeight900 = 8, |
| FontWeightNormal = FontWeight400, |
| FontWeightBold = FontWeight700 |
| }; |
| |
| // Converts a FontWeight to its corresponding numeric value |
| inline int numericFontWeight(FontWeight weight) { |
| return (weight - FontWeight100 + 1) * 100; |
| } |
| |
| // Numeric values matching OS/2 & Windows Metrics usWidthClass table. |
| // https://www.microsoft.com/typography/otspec/os2.htm |
| enum FontStretch { |
| FontStretchUltraCondensed = 1, |
| FontStretchExtraCondensed = 2, |
| FontStretchCondensed = 3, |
| FontStretchSemiCondensed = 4, |
| FontStretchNormal = 5, |
| FontStretchSemiExpanded = 6, |
| FontStretchExpanded = 7, |
| FontStretchExtraExpanded = 8, |
| FontStretchUltraExpanded = 9 |
| }; |
| |
| enum FontStyle { |
| FontStyleNormal = 0, |
| FontStyleOblique = 1, |
| FontStyleItalic = 2 |
| }; |
| |
| typedef unsigned FontTraitsBitfield; |
| |
| struct FontTraits { |
| DISALLOW_NEW(); |
| FontTraits(FontStyle style, FontWeight weight, FontStretch stretch) { |
| m_traits.m_style = style; |
| m_traits.m_weight = weight; |
| m_traits.m_stretch = stretch; |
| m_traits.m_filler = 0; |
| DCHECK_EQ(m_bitfield >> 10, 0u); |
| } |
| FontTraits(FontTraitsBitfield bitfield) : m_bitfield(bitfield) { |
| DCHECK_EQ(m_traits.m_filler, 0u); |
| DCHECK_EQ(m_bitfield >> 10, 0u); |
| } |
| FontStyle style() const { return static_cast<FontStyle>(m_traits.m_style); } |
| FontWeight weight() const { |
| return static_cast<FontWeight>(m_traits.m_weight); |
| } |
| FontStretch stretch() const { |
| return static_cast<FontStretch>(m_traits.m_stretch); |
| } |
| FontTraitsBitfield bitfield() const { return m_bitfield; } |
| |
| union { |
| struct { |
| unsigned m_style : 2; |
| unsigned m_weight : 4; |
| unsigned m_stretch : 4; |
| unsigned m_filler : 22; |
| } m_traits; |
| FontTraitsBitfield m_bitfield; |
| }; |
| }; |
| |
| } // namespace blink |
| #endif // FontTraits_h |
