a60-svg-constants.h

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// -*- mode: C++ -*-
 
// Copyright (C) 2014-2025 Benjamin De Kosnik <b.dekosnik@gmail.com>
 
// This file is part of the alpha60-MiL SVG library.  This library is
// free software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3, or (at your option) any
// later version.
 
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
 
#ifndef MiL_SVG_CONSTANTS_H
#define MiL_SVG_CONSTANTS_H 1
 
 
namespace svg::constants {
 
/**
   Area constants use [h, v] suffix as per
   - h == horizontal aka landscape
   - v == vertical aka portrait
*/
constexpr area<> no_area = { 0, 0 };
 
/// Area Constants in millimeter units.
constexpr area<> letter_mm_h = { 216, 279 };
 
constexpr area<> a2_mm_h = { 420, 594 };
constexpr area<> a4_mm_h = { 210, 297 };
constexpr area<> a5_mm_h = { 148, 210 };
constexpr area<> a6_mm_h = { 105, 148 };
 
/// Area Constants in pixel units.
/// Pixel constants are using 96 PPI unless otherwise noted.
constexpr area<> a2_096_h = { 2245, 1587 };
constexpr area<> a4_096_h = { 1123, 794 };
constexpr area<> a5_096_h = { 794, 559 };
constexpr area<> a6_096_h = { 559, 397 };
 
constexpr area<> a2_096_v = { 1587, 2245 };
constexpr area<> a4_096_v = { 794, 1123 };
constexpr area<> a5_096_v = { 559, 794 };
constexpr area<> a6_096_v = { 397, 559 };
 
constexpr area<> letter_096_v = { 816, 1056 };
constexpr area<> letter_096_h = { 1056, 816 };
 
/// Letter bleed (8.625 w x 11.25 h)
constexpr area<> letterb_096_v = { 816, 1056 };
constexpr area<> letterb_096_h = { 1056, 816 };
 
/// Square 8 (8 w x 8 h)
constexpr area<> square8_096 = { 768, 768 };
 
/// Square 8bis (8.5 w x 8.5 h)
constexpr area<> square8bis_096 = { 816, 816 };
 
/// Square 8bis bleed (8.625 w x 8.75 h) (219 x 222 mm)
constexpr area<> square8bisb_096_v = { 828, 840 };
constexpr area<> square8bisb_096_h = { 840, 826 };
 
/// Square 17 bleed 2 x (8.625 w x 8.75 h) for above at 2x
constexpr area<> square17b_096_v = { 1656, 1680 };
constexpr area<> square17b_096_h = { 1680, 1656 };
 
/// Engineering C, aka 22 x 17 letter quattro
constexpr area<> p22x17_096_h = { 2112, 1632 };
constexpr area<> p17x22_096_v = { 1632, 2112 };
 
constexpr area<> instagram_v = { 1080, 1350 };
constexpr area<> instagram_s = { 1080, 1080 };
constexpr area<> instagram_4ks = { 2160, 2160 };
 
constexpr area<> v1080p_h = { 1920, 1080 };
constexpr area<> v1080p_v = { 1080, 1920 };
 
constexpr area<> v4k_h = { 3840, 2160 };
constexpr area<> v4k_v = { 2160, 3840 };
 
/// Fine Art max sheet, aka 44 x 30 (1.47:1 ~ 3:2)
constexpr area<> p44x30_h = { 4224, 2880 };
constexpr area<> p30x44_v = { 2880, 4224 };
 
/// Fine Art roll, aka 44 x 22 (2:1)
constexpr area<> p44x22_h = { 4224, 2112 };
constexpr area<> p22x44_v = { 2112, 4224 };
 
 
/// Style constants.
const style no_style = { color::none, 0.0, color::none, 0.0, 0 };
const style b_style = { color::black, 1.0, color::white, 0.0, 0.5 };
const style w_style = { color::white, 1.0, color::black, 0.0, 0.5 };
 
const style r_style = { color::red, 1.0, color::red, 0.0, 0.5 };
const style wcaglg_style = { color::wcag_lgray, 1.0, color::wcag_lgray, 0.0, 0.5 };
const style wcagg_style = { color::wcag_gray, 1.0, color::wcag_gray, 0.0, 0.5 };
const style wcagdg_style = { color::wcag_dgray, 1.0, color::wcag_dgray, 0.0, 0.5 };
 
 
/// Useful typography constants.
typography::anchor a = typography::anchor::middle;
typography::align al = typography::align::center;
typography::weight w = typography::weight::normal;
typography::property p = typography::property::normal;
typography::baseline b = typography::baseline::none;
 
const char* sserif = "Source Serif Pro";
const char* ssans = "Source Sans Pro";
const char* smono = "Source Code Pro";
const char* shsans = "Source Han Sans CN";
const char* aprcu = "Apercu";
const char* aprcumo = "Apercu Mono";
const char* ccode = "Calling Code";
const char* zslab = "Zilla Slab";
const char* mexcellent = "Mexcellent";
const char* hyperl = "Atkinson Hyperlegible";
 
const typography smono_typo = { smono, 12, b_style, a, al, b, w, p };
const typography sserif_typo = { sserif, 12, b_style, a, al, b, w, p };
const typography ssans_typo = { ssans, 12, b_style, a, al, b, w, p };
const typography shsans_typo = { shsans, 12, b_style, a, al, b, w, p };
const typography apercu_typo = { aprcu, 12, b_style, a, al, b, w, p };
const typography apercumo_typo = { aprcumo, 12, b_style, a, al, b, w, p };
const typography ccode_typo = { ccode, 12, b_style, a, al, b, w, p };
const typography zslab_typo = { zslab, 12, b_style, a, al, b, w, p };
const typography mxcllnt_typo = { mexcellent, 12, b_style, a, al, b, w, p };
const typography hyperl_typo = { hyperl, 12, b_style, a, al, b, w, p };
 
/// Radial rotation direction.
enum class rrotation
  {
    none,       ///< None
    cw,           ///< Clockwise
    ccw          ///< Counter-clockwise
  };
 
} // namespace svg::constants
 
#endif