1 /* 2 * The MIT License 3 * 4 * Copyright (c) 2016-2018, Torsten Paul <torsten.paul@gmx.de>, 5 * Marius Kintel <marius@kintel.net> 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 * THE SOFTWARE. 24 */ 25 #pragma once 26 27 #include <string> 28 29 namespace libsvg { 30 31 // https://oreillymedia.github.io/Using_SVG/guide/units.html 32 // 33 // Points (pt) 34 // 35 // 1pt ≅ 1.3333px or user units (1px = 0.75pt) 36 // 1pt = 1/72in 37 // 38 // Picas (pc) 39 // 40 // 1pc = 16px or user units 41 // 1pc = 1/6in 42 // 43 enum class unit_t { UNDEFINED, NONE, PERCENT, EM, EX, PX, IN, CM, MM, PT, PC }; 44 45 enum class align_t { UNDEFINED, NONE, MIN, MID, MAX }; 46 47 struct length_struct { 48 double number; 49 std::string unit; 50 }; 51 52 struct length_t { 53 double number; 54 unit_t unit; 55 }; 56 57 struct viewbox_t { 58 double x; 59 double y; 60 double width; 61 double height; 62 bool is_valid; 63 }; 64 65 struct alignment_t { 66 align_t x; 67 align_t y; 68 bool defer; 69 bool meet; 70 }; 71 72 double parse_double(const std::string& number); 73 const length_t parse_length(const std::string& value); 74 const viewbox_t parse_viewbox(const std::string& value); 75 const alignment_t parse_alignment(const std::string& value); 76 77 std::ostream &operator<<(std::ostream &stream, const unit_t &unit); 78 std::ostream &operator<<(std::ostream &stream, const length_t &length); 79 std::ostream &operator<<(std::ostream &stream, const align_t &align); 80 81 } 82