1/* 2 * Copyright (C) 2007 Nicholas Shanks <contact@nickshanks.com> 3 * Copyright (C) 2008, 2013 Apple 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 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of Apple Inc. ("Apple") nor the names of 15 * its contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30#include "config.h" 31#include "FontDescription.h" 32 33namespace WebCore { 34 35struct SameSizeAsFontDescription { 36 void* pointers[2]; 37 float sizes[2]; 38 // FXIME: Make them fit into one word. 39 uint32_t bitfields; 40 uint32_t bitfields2 : 8; 41}; 42 43COMPILE_ASSERT(sizeof(FontDescription) == sizeof(SameSizeAsFontDescription), FontDescription_should_stay_small); 44 45FontWeight FontDescription::lighterWeight(void) const 46{ 47 // FIXME: Should actually return the CSS weight corresponding to next lightest 48 // weight of the currently used font family. 49 switch (m_weight) { 50 case FontWeight100: 51 case FontWeight200: 52 return FontWeight100; 53 54 case FontWeight300: 55 return FontWeight200; 56 57 case FontWeight400: 58 case FontWeight500: 59 return FontWeight300; 60 61 case FontWeight600: 62 case FontWeight700: 63 return FontWeight400; 64 65 case FontWeight800: 66 return FontWeight500; 67 68 case FontWeight900: 69 return FontWeight700; 70 } 71 ASSERT_NOT_REACHED(); 72 return FontWeightNormal; 73} 74 75FontWeight FontDescription::bolderWeight(void) const 76{ 77 // FIXME: Should actually return the CSS weight corresponding to next heaviest 78 // weight of the currently used font family. 79 switch (m_weight) { 80 case FontWeight100: 81 case FontWeight200: 82 return FontWeight300; 83 84 case FontWeight300: 85 return FontWeight400; 86 87 case FontWeight400: 88 case FontWeight500: 89 return FontWeight700; 90 91 case FontWeight600: 92 case FontWeight700: 93 return FontWeight800; 94 95 case FontWeight800: 96 case FontWeight900: 97 return FontWeight900; 98 } 99 ASSERT_NOT_REACHED(); 100 return FontWeightNormal; 101} 102 103FontTraitsMask FontDescription::traitsMask() const 104{ 105 return static_cast<FontTraitsMask>((m_italic ? FontStyleItalicMask : FontStyleNormalMask) 106 | (m_smallCaps ? FontVariantSmallCapsMask : FontVariantNormalMask) 107 | (FontWeight100Mask << (m_weight - FontWeight100))); 108 109} 110 111FontDescription FontDescription::makeNormalFeatureSettings() const 112{ 113 FontDescription normalDescription(*this); 114 normalDescription.setFeatureSettings(0); 115 return normalDescription; 116} 117 118#if ENABLE(IOS_TEXT_AUTOSIZING) 119bool FontDescription::familiesEqualForTextAutoSizing(const FontDescription& other) const 120{ 121 unsigned thisFamilyCount = familyCount(); 122 unsigned otherFamilyCount = other.familyCount(); 123 124 if (thisFamilyCount != otherFamilyCount) 125 return false; 126 127 for (unsigned i = 0; i < thisFamilyCount; ++i) { 128 if (!equalIgnoringCase(familyAt(i), other.familyAt(i))) 129 return false; 130 } 131 132 return true; 133} 134#endif // ENABLE(IOS_TEXT_AUTOSIZING) 135 136} // namespace WebCore 137