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 char WEB_COLOR_TOKEN('#');
42 const char* const HEX_COLOR_TOKEN("0x");
43 const char* const ALPHA_ONE("FF");
45 const std::string BLACK_COLOR("black");
46 const std::string WHITE_COLOR("white");
47 const std::string RED_COLOR("red");
48 const std::string GREEN_COLOR("green");
49 const std::string BLUE_COLOR("blue");
50 const std::string YELLOW_COLOR("yellow");
51 const std::string MAGENTA_COLOR("magenta");
52 const std::string CYAN_COLOR("cyan");
53 const std::string TRANSPARENT_COLOR("transparent");
56 bool TokenComparison(const std::string& string1, const char* const stringBuffer2, Length length)
58 const Length stringSize = string1.size();
59 if(stringSize != length)
61 // Early return. Strings have different sizes.
65 const char* const stringBuffer1 = string1.c_str();
67 for(std::size_t index = 0; index < stringSize; ++index)
69 const char character = *(stringBuffer2 + index);
70 const bool toLower = (character < LAST_UPPER_CASE) && (character >= FIRST_UPPER_CASE);
71 if(*(stringBuffer1 + index) != (toLower ? character + TO_LOWER_CASE : character))
80 void SkipWhiteSpace(const char*& stringBuffer,
81 const char* const stringEndBuffer)
83 for(; (WHITE_SPACE >= *stringBuffer) && (stringBuffer < stringEndBuffer); ++stringBuffer)
87 void JumpToWhiteSpace(const char*& stringBuffer,
88 const char* const stringEndBuffer)
90 for(; (WHITE_SPACE != *stringBuffer) && (stringBuffer < stringEndBuffer); ++stringBuffer)
94 unsigned int StringToUint(const char* const uintStr)
96 return static_cast<unsigned int>(strtoul(uintStr, NULL, 10));
99 unsigned int StringToHex(const char* const uintStr)
101 return static_cast<unsigned int>(strtoul(uintStr, NULL, 16));
104 float StringToFloat(const char* const floatStr)
106 return static_cast<float>(strtod(floatStr, NULL));
109 void FloatToString(float value, std::string& floatStr)
111 std::stringstream ss;
116 void UintToString(unsigned int value, std::string& uIntStr)
118 std::stringstream ss;
123 void UintColorToVector4(unsigned int color, Vector4& retColor)
125 retColor.a = static_cast<float>((color & 0xFF000000) >> 24u) / 255.f;
126 retColor.r = static_cast<float>((color & 0x00FF0000) >> 16u) / 255.f;
127 retColor.g = static_cast<float>((color & 0x0000FF00) >> 8u) / 255.f;
128 retColor.b = static_cast<float>(color & 0x000000FF) / 255.f;
131 void ColorStringToVector4(const char* const colorStr, Length length, Vector4& retColor)
133 if(WEB_COLOR_TOKEN == *colorStr)
135 std::string webColor(colorStr + 1u, length - 1u);
136 if(4u == length) // 3 component web color #F00 (red)
138 webColor.insert(2u, &(webColor[2]), 1u);
139 webColor.insert(1u, &(webColor[1]), 1u);
140 webColor.insert(0u, &(webColor[0]), 1u);
141 webColor.insert(0u, ALPHA_ONE);
143 else if(7u == length) // 6 component web color #FF0000 (red)
145 webColor.insert(0u, ALPHA_ONE);
148 UintColorToVector4(StringToHex(webColor.c_str()), retColor);
150 else if(TokenComparison(HEX_COLOR_TOKEN, colorStr, 2u))
152 UintColorToVector4(StringToHex(colorStr + 2u), retColor);
154 else if(TokenComparison(BLACK_COLOR, colorStr, length))
156 retColor = Color::BLACK;
158 else if(TokenComparison(WHITE_COLOR, colorStr, length))
160 retColor = Color::WHITE;
162 else if(TokenComparison(RED_COLOR, colorStr, length))
164 retColor = Color::RED;
166 else if(TokenComparison(GREEN_COLOR, colorStr, length))
168 retColor = Color::GREEN;
170 else if(TokenComparison(BLUE_COLOR, colorStr, length))
172 retColor = Color::BLUE;
174 else if(TokenComparison(YELLOW_COLOR, colorStr, length))
176 retColor = Color::YELLOW;
178 else if(TokenComparison(MAGENTA_COLOR, colorStr, length))
180 retColor = Color::MAGENTA;
182 else if(TokenComparison(CYAN_COLOR, colorStr, length))
184 retColor = Color::CYAN;
186 else if(TokenComparison(TRANSPARENT_COLOR, colorStr, length))
188 retColor = Color::TRANSPARENT;
192 void Vector4ToColorString(const Vector4& value, std::string& vector2Str)
194 if(Color::BLACK == value)
196 vector2Str = BLACK_COLOR;
200 if(Color::WHITE == value)
202 vector2Str = WHITE_COLOR;
206 if(Color::RED == value)
208 vector2Str = RED_COLOR;
212 if(Color::GREEN == value)
214 vector2Str = GREEN_COLOR;
218 if(Color::BLUE == value)
220 vector2Str = BLUE_COLOR;
224 if(Color::YELLOW == value)
226 vector2Str = YELLOW_COLOR;
230 if(Color::MAGENTA == value)
232 vector2Str = MAGENTA_COLOR;
236 if(Color::CYAN == value)
238 vector2Str = CYAN_COLOR;
242 if(Color::TRANSPARENT == value)
244 vector2Str = TRANSPARENT_COLOR;
248 const unsigned int alpha = static_cast<unsigned int>(255.f * value.a);
249 const unsigned int red = static_cast<unsigned int>(255.f * value.r);
250 const unsigned int green = static_cast<unsigned int>(255.f * value.g);
251 const unsigned int blue = static_cast<unsigned int>(255.f * value.b);
253 std::stringstream ss;
254 const unsigned int size = 2u * sizeof(unsigned char);
257 << std::setfill('0') << std::setw(size)
259 << std::setfill('0') << std::setw(size)
261 << std::setfill('0') << std::setw(size)
263 << std::setfill('0') << std::setw(size)
265 vector2Str = ss.str();
268 void StringToVector2(const char* const vectorStr, Length length, Vector2& vector2)
270 // Points to the first character of the string.
271 const char* strBuffer = vectorStr;
273 // Points to the first character of the 'x' value.
274 const char* const xBuffer = strBuffer;
276 // Jumps to the next white space.
277 JumpToWhiteSpace(strBuffer, strBuffer + length);
279 // Points to the first character of the 'y' value.
280 const char* const yBuffer = strBuffer;
282 // Converts the shadow's offset to float.
283 vector2.x = StringToFloat(xBuffer);
284 vector2.y = StringToFloat(yBuffer);
287 void Vector2ToString(const Vector2& value, std::string& vector2Str)
289 FloatToString(value.x, vector2Str);
293 FloatToString(value.y, yStr);
300 } // namespace Toolkit