1 // Copyright 2018 The PDFium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "core/fxcrt/css/cfx_cssdata.h"
8
9 #include <algorithm>
10 #include <utility>
11
12 #include "core/fxcrt/css/cfx_cssstyleselector.h"
13 #include "core/fxcrt/css/cfx_cssvaluelistparser.h"
14 #include "core/fxcrt/fx_codepage.h"
15 #include "core/fxcrt/fx_extension.h"
16
17 namespace {
18
19 #undef CSS_PROP____
20 #define CSS_PROP____(a, b, c, d) {CFX_CSSProperty::a, c, d},
21 const CFX_CSSData::Property kPropertyTable[] = {
22 #include "core/fxcrt/css/properties.inc"
23 };
24 #undef CSS_PROP____
25
26 #undef CSS_PROP_VALUE____
27 #define CSS_PROP_VALUE____(a, b, c) {CFX_CSSPropertyValue::a, c},
28 const CFX_CSSData::PropertyValue kPropertyValueTable[] = {
29 #include "core/fxcrt/css/property_values.inc"
30 };
31 #undef CSS_PROP_VALUE____
32
33 const CFX_CSSData::LengthUnit kLengthUnitTable[] = {
34 {L"cm", CFX_CSSNumberValue::Unit::kCentiMeters},
35 {L"em", CFX_CSSNumberValue::Unit::kEMS},
36 {L"ex", CFX_CSSNumberValue::Unit::kEXS},
37 {L"in", CFX_CSSNumberValue::Unit::kInches},
38 {L"mm", CFX_CSSNumberValue::Unit::kMilliMeters},
39 {L"pc", CFX_CSSNumberValue::Unit::kPicas},
40 {L"pt", CFX_CSSNumberValue::Unit::kPoints},
41 {L"px", CFX_CSSNumberValue::Unit::kPixels},
42 };
43
44 // 16 colours from CSS 2.0 + alternate spelling of grey/gray.
45 const CFX_CSSData::Color kColorTable[] = {
46 {L"aqua", 0xff00ffff}, {L"black", 0xff000000}, {L"blue", 0xff0000ff},
47 {L"fuchsia", 0xffff00ff}, {L"gray", 0xff808080}, {L"green", 0xff008000},
48 {L"grey", 0xff808080}, {L"lime", 0xff00ff00}, {L"maroon", 0xff800000},
49 {L"navy", 0xff000080}, {L"olive", 0xff808000}, {L"orange", 0xffffa500},
50 {L"purple", 0xff800080}, {L"red", 0xffff0000}, {L"silver", 0xffc0c0c0},
51 {L"teal", 0xff008080}, {L"white", 0xffffffff}, {L"yellow", 0xffffff00},
52 };
53
54 } // namespace
55
GetPropertyByName(WideStringView name)56 const CFX_CSSData::Property* CFX_CSSData::GetPropertyByName(
57 WideStringView name) {
58 if (name.IsEmpty())
59 return nullptr;
60
61 uint32_t hash = FX_HashCode_GetLoweredW(name);
62 auto* result = std::lower_bound(
63 std::begin(kPropertyTable), std::end(kPropertyTable), hash,
64 [](const CFX_CSSData::Property& iter, const uint32_t& hash) {
65 return iter.dwHash < hash;
66 });
67
68 if (result != std::end(kPropertyTable) && result->dwHash == hash) {
69 return result;
70 }
71 return nullptr;
72 }
73
GetPropertyByEnum(CFX_CSSProperty property)74 const CFX_CSSData::Property* CFX_CSSData::GetPropertyByEnum(
75 CFX_CSSProperty property) {
76 return &kPropertyTable[static_cast<uint8_t>(property)];
77 }
78
GetPropertyValueByName(WideStringView wsName)79 const CFX_CSSData::PropertyValue* CFX_CSSData::GetPropertyValueByName(
80 WideStringView wsName) {
81 if (wsName.IsEmpty())
82 return nullptr;
83
84 uint32_t hash = FX_HashCode_GetLoweredW(wsName);
85 auto* result = std::lower_bound(
86 std::begin(kPropertyValueTable), std::end(kPropertyValueTable), hash,
87 [](const PropertyValue& iter, const uint32_t& hash) {
88 return iter.dwHash < hash;
89 });
90
91 if (result != std::end(kPropertyValueTable) && result->dwHash == hash) {
92 return result;
93 }
94 return nullptr;
95 }
96
GetLengthUnitByName(WideStringView wsName)97 const CFX_CSSData::LengthUnit* CFX_CSSData::GetLengthUnitByName(
98 WideStringView wsName) {
99 if (wsName.IsEmpty() || wsName.GetLength() != 2)
100 return nullptr;
101
102 WideString lowerName = WideString(wsName);
103 lowerName.MakeLower();
104
105 for (auto* iter = std::begin(kLengthUnitTable);
106 iter != std::end(kLengthUnitTable); ++iter) {
107 if (lowerName == iter->value)
108 return iter;
109 }
110
111 return nullptr;
112 }
113
GetColorByName(WideStringView wsName)114 const CFX_CSSData::Color* CFX_CSSData::GetColorByName(WideStringView wsName) {
115 if (wsName.IsEmpty())
116 return nullptr;
117
118 WideString lowerName = WideString(wsName);
119 lowerName.MakeLower();
120
121 for (auto* iter = std::begin(kColorTable); iter != std::end(kColorTable);
122 ++iter) {
123 if (lowerName == iter->name)
124 return iter;
125 }
126 return nullptr;
127 }
128