2 * Copyright (c) 2021 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <dali-toolkit/internal/text/markup-processor-font.h>
22 #include <dali/public-api/common/dali-vector.h>
26 #include <dali-toolkit/internal/text/font-description-run.h>
27 #include <dali-toolkit/internal/text/markup-processor-helper-functions.h>
28 #include <dali-toolkit/internal/text/text-font-style.h>
38 const std::string XHTML_FAMILY_ATTRIBUTE("family");
39 const std::string XHTML_SIZE_ATTRIBUTE("size");
40 const std::string XHTML_WEIGHT_ATTRIBUTE("weight");
41 const std::string XHTML_WIDTH_ATTRIBUTE("width");
42 const std::string XHTML_SLANT_ATTRIBUTE("slant");
44 const std::string FONT_PREFIX("font-");
45 const unsigned int FONT_PREFIX_LENGTH = 5u;
46 const unsigned int MIN_FONT_ATTRIBUTE_SIZE = 4u; ///< The minimum length of any of the possible 'weight', 'width' , 'slant' or 'size' values.
47 const unsigned int MAX_FONT_ATTRIBUTE_SIZE = 15u; ///< The maximum length of any of the possible 'weight', 'width' or 'slant' values.
48 const float PIXEL_FORMAT_64_FACTOR = 64.f; ///< 64.f is used to convert from point size to 26.6 pixel format.
51 void processFontAttributeValue(char value[], const Attribute& attribute)
53 // The StringToWeight() uses the Scripting::GetEnumeration() function which requires the input string to end with a '\0' char.
54 const Length length = attribute.valueLength > MAX_FONT_ATTRIBUTE_SIZE ? MAX_FONT_ATTRIBUTE_SIZE : attribute.valueLength;
55 memcpy(value, attribute.valueBuffer, length);
59 void ProcessFontFamily(const Attribute& attribute, FontDescriptionRun& fontRun)
61 fontRun.familyDefined = true;
62 fontRun.familyLength = attribute.valueLength;
63 fontRun.familyName = new char[fontRun.familyLength];
64 memcpy(fontRun.familyName, attribute.valueBuffer, fontRun.familyLength);
65 // The memory is freed when the font run is removed from the logical model.
68 void ProcessFontSize(const Attribute& attribute, FontDescriptionRun& fontRun)
70 // 64.f is used to convert from point size to 26.6 pixel format.
71 fontRun.size = static_cast<PointSize26Dot6>(StringToFloat(attribute.valueBuffer) * PIXEL_FORMAT_64_FACTOR);
72 fontRun.sizeDefined = true;
75 void ProcessFontWeight(const Attribute& attribute, FontDescriptionRun& fontRun)
77 char value[MAX_FONT_ATTRIBUTE_SIZE + 1u];
78 processFontAttributeValue(value, attribute);
80 fontRun.weight = StringToWeight(value);
81 fontRun.weightDefined = true;
84 void ProcessFontWidth(const Attribute& attribute, FontDescriptionRun& fontRun)
86 char value[MAX_FONT_ATTRIBUTE_SIZE + 1u];
87 processFontAttributeValue(value, attribute);
89 fontRun.width = StringToWidth(value);
90 fontRun.widthDefined = true;
93 void ProcessFontSlant(const Attribute& attribute, FontDescriptionRun& fontRun)
95 char value[MAX_FONT_ATTRIBUTE_SIZE + 1u];
96 processFontAttributeValue(value, attribute);
98 fontRun.slant = StringToSlant(value);
99 fontRun.slantDefined = true;
102 void ProcessFontTag(const Tag& tag, FontDescriptionRun& fontRun)
104 for(Vector<Attribute>::ConstIterator it = tag.attributes.Begin(),
105 endIt = tag.attributes.End();
109 const Attribute& attribute(*it);
111 if(TokenComparison(XHTML_FAMILY_ATTRIBUTE, attribute.nameBuffer, attribute.nameLength))
113 ProcessFontFamily(attribute, fontRun);
115 else if(TokenComparison(XHTML_SIZE_ATTRIBUTE, attribute.nameBuffer, attribute.nameLength))
117 ProcessFontSize(attribute, fontRun);
119 else if(TokenComparison(XHTML_WEIGHT_ATTRIBUTE, attribute.nameBuffer, attribute.nameLength))
121 ProcessFontWeight(attribute, fontRun);
123 else if(TokenComparison(XHTML_WIDTH_ATTRIBUTE, attribute.nameBuffer, attribute.nameLength))
125 ProcessFontWidth(attribute, fontRun);
127 else if(TokenComparison(XHTML_SLANT_ATTRIBUTE, attribute.nameBuffer, attribute.nameLength))
129 ProcessFontSlant(attribute, fontRun);
136 } // namespace Toolkit