2 * Copyright (c) 2015 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-helper-functions.h>
22 #include <dali/public-api/common/constants.h>
23 #include <dali/public-api/math/vector2.h>
36 const char WHITE_SPACE = 0x20; // ASCII value of the white space.
37 const char FIRST_UPPER_CASE = 0x41; // ASCII value of the one after the first upper case character (A).
38 const char LAST_UPPER_CASE = 0x5b; // ASCII value of the one after the last upper case character (Z).
39 const char TO_LOWER_CASE = 32; // Value to add to a upper case character to transform it into a lower case.
41 const unsigned int MAX_FLOAT_ATTRIBUTE_SIZE = 17u; ///< The maximum length of any of the possible float values. +99999.999999999f (sign, five digits, dot, nine digits, f)
43 const char WEB_COLOR_TOKEN('#');
44 const char* const HEX_COLOR_TOKEN("0x");
45 const char* const ALPHA_ONE("FF");
47 const std::string BLACK_COLOR("black");
48 const std::string WHITE_COLOR("white");
49 const std::string RED_COLOR("red");
50 const std::string GREEN_COLOR("green");
51 const std::string BLUE_COLOR("blue");
52 const std::string YELLOW_COLOR("yellow");
53 const std::string MAGENTA_COLOR("magenta");
54 const std::string CYAN_COLOR("cyan");
55 const std::string TRANSPARENT_COLOR("transparent");
57 const std::string SOLID_UNDERLINE("solid");
58 const std::string DASHED_UNDERLINE("dashed");
59 const std::string DOUBLE_UNDERLINE("double");
62 bool TokenComparison(const std::string& string1, const char* const stringBuffer2, Length length)
64 const Length stringSize = string1.size();
65 if(stringSize != length)
67 // Early return. Strings have different sizes.
71 const char* const stringBuffer1 = string1.c_str();
73 for(std::size_t index = 0; index < stringSize; ++index)
75 const char character = *(stringBuffer2 + index);
76 const bool toLower = (character < LAST_UPPER_CASE) && (character >= FIRST_UPPER_CASE);
77 if(*(stringBuffer1 + index) != (toLower ? character + TO_LOWER_CASE : character))
86 void SkipWhiteSpace(const char*& stringBuffer,
87 const char* const stringEndBuffer)
89 for(; (WHITE_SPACE >= *stringBuffer) && (stringBuffer < stringEndBuffer); ++stringBuffer)
93 void JumpToWhiteSpace(const char*& stringBuffer,
94 const char* const stringEndBuffer)
96 for(; (WHITE_SPACE != *stringBuffer) && (stringBuffer < stringEndBuffer); ++stringBuffer)
100 unsigned int StringToUint(const char* const uintStr)
102 return static_cast<unsigned int>(strtoul(uintStr, NULL, 10));
105 unsigned int StringToHex(const char* const uintStr)
107 return static_cast<unsigned int>(strtoul(uintStr, NULL, 16));
110 float StringToFloat(const char* const floatStr)
112 return static_cast<float>(strtod(floatStr, NULL));
115 void FloatToString(float value, std::string& floatStr)
117 std::stringstream ss;
122 void UintToString(unsigned int value, std::string& uIntStr)
124 std::stringstream ss;
129 void UintColorToVector4(unsigned int color, Vector4& retColor)
131 retColor.a = static_cast<float>((color & 0xFF000000) >> 24u) / 255.f;
132 retColor.r = static_cast<float>((color & 0x00FF0000) >> 16u) / 255.f;
133 retColor.g = static_cast<float>((color & 0x0000FF00) >> 8u) / 255.f;
134 retColor.b = static_cast<float>(color & 0x000000FF) / 255.f;
137 void ColorStringToVector4(const char* const colorStr, Length length, Vector4& retColor)
139 if(WEB_COLOR_TOKEN == *colorStr)
141 std::string webColor(colorStr + 1u, length - 1u);
142 if(4u == length) // 3 component web color #F00 (red)
144 webColor.insert(2u, &(webColor[2]), 1u);
145 webColor.insert(1u, &(webColor[1]), 1u);
146 webColor.insert(0u, &(webColor[0]), 1u);
147 webColor.insert(0u, ALPHA_ONE);
149 else if(7u == length) // 6 component web color #FF0000 (red)
151 webColor.insert(0u, ALPHA_ONE);
154 UintColorToVector4(StringToHex(webColor.c_str()), retColor);
156 else if(TokenComparison(HEX_COLOR_TOKEN, colorStr, 2u))
158 UintColorToVector4(StringToHex(colorStr + 2u), retColor);
160 else if(TokenComparison(BLACK_COLOR, colorStr, length))
162 retColor = Color::BLACK;
164 else if(TokenComparison(WHITE_COLOR, colorStr, length))
166 retColor = Color::WHITE;
168 else if(TokenComparison(RED_COLOR, colorStr, length))
170 retColor = Color::RED;
172 else if(TokenComparison(GREEN_COLOR, colorStr, length))
174 retColor = Color::GREEN;
176 else if(TokenComparison(BLUE_COLOR, colorStr, length))
178 retColor = Color::BLUE;
180 else if(TokenComparison(YELLOW_COLOR, colorStr, length))
182 retColor = Color::YELLOW;
184 else if(TokenComparison(MAGENTA_COLOR, colorStr, length))
186 retColor = Color::MAGENTA;
188 else if(TokenComparison(CYAN_COLOR, colorStr, length))
190 retColor = Color::CYAN;
192 else if(TokenComparison(TRANSPARENT_COLOR, colorStr, length))
194 retColor = Color::TRANSPARENT;
198 void Vector4ToColorString(const Vector4& value, std::string& vector2Str)
200 if(Color::BLACK == value)
202 vector2Str = BLACK_COLOR;
206 if(Color::WHITE == value)
208 vector2Str = WHITE_COLOR;
212 if(Color::RED == value)
214 vector2Str = RED_COLOR;
218 if(Color::GREEN == value)
220 vector2Str = GREEN_COLOR;
224 if(Color::BLUE == value)
226 vector2Str = BLUE_COLOR;
230 if(Color::YELLOW == value)
232 vector2Str = YELLOW_COLOR;
236 if(Color::MAGENTA == value)
238 vector2Str = MAGENTA_COLOR;
242 if(Color::CYAN == value)
244 vector2Str = CYAN_COLOR;
248 if(Color::TRANSPARENT == value)
250 vector2Str = TRANSPARENT_COLOR;
254 const unsigned int alpha = static_cast<unsigned int>(255.f * value.a);
255 const unsigned int red = static_cast<unsigned int>(255.f * value.r);
256 const unsigned int green = static_cast<unsigned int>(255.f * value.g);
257 const unsigned int blue = static_cast<unsigned int>(255.f * value.b);
259 std::stringstream ss;
260 const unsigned int size = 2u * sizeof(unsigned char);
263 << std::setfill('0') << std::setw(size)
265 << std::setfill('0') << std::setw(size)
267 << std::setfill('0') << std::setw(size)
269 << std::setfill('0') << std::setw(size)
271 vector2Str = ss.str();
274 void StringToVector2(const char* const vectorStr, Length length, Vector2& vector2)
276 // Points to the first character of the string.
277 const char* strBuffer = vectorStr;
279 // Points to the first character of the 'x' value.
280 const char* const xBuffer = strBuffer;
282 // Jumps to the next white space.
283 JumpToWhiteSpace(strBuffer, strBuffer + length);
285 // Points to the first character of the 'y' value.
286 const char* const yBuffer = strBuffer;
288 // Converts the shadow's offset to float.
289 vector2.x = StringToFloat(xBuffer);
290 vector2.y = StringToFloat(yBuffer);
293 void Vector2ToString(const Vector2& value, std::string& vector2Str)
295 FloatToString(value.x, vector2Str);
299 FloatToString(value.y, yStr);
304 void UnderlineTypeStringToTypeValue(const char* const typeStr, Length length, Text::Underline::Type& retType)
306 if(TokenComparison(SOLID_UNDERLINE, typeStr, length))
308 retType = Text::Underline::SOLID;
310 else if(TokenComparison(DASHED_UNDERLINE, typeStr, length))
312 retType = Text::Underline::DASHED;
314 else if(TokenComparison(DOUBLE_UNDERLINE, typeStr, length))
316 retType = Text::Underline::DOUBLE;
322 } // namespace Toolkit