From 7307d73bbc55e059c4740cd9e5212e0a27c40901 Mon Sep 17 00:00:00 2001 From: Danny Robson Date: Thu, 9 Apr 2015 20:46:55 +1000 Subject: [PATCH] colour: add html and x11 string lookup --- colour.cpp | 224 ++++++++++++++++++++++++++++++++++++++++++++++++ colour.hpp | 4 + test/colour.cpp | 4 + 3 files changed, 232 insertions(+) diff --git a/colour.cpp b/colour.cpp index da487a2e..5001eb85 100644 --- a/colour.cpp +++ b/colour.cpp @@ -45,6 +45,230 @@ CONSTANT_COLOUR(GREEN,0,1,0); CONSTANT_COLOUR(BLUE, 0,0,1); +//----------------------------------------------------------------------------- +static const std::map> +HTML_COLOURS { { + { "white", { 0xff, 0xff, 0xff, 0xff } }, + { "silver", { 0xc0, 0xc0, 0xc0, 0xff } }, + { "gray", { 0x80, 0x80, 0x80, 0xff } }, + { "black", { 0x00, 0x00, 0x00, 0xff } }, + { "red", { 0xff, 0x00, 0x00, 0xff } }, + { "maroon", { 0x80, 0x00, 0x00, 0xff } }, + { "yellow", { 0xff, 0xff, 0x00, 0xff } }, + { "olive", { 0x80, 0x80, 0x00, 0xff } }, + { "lime", { 0x00, 0xff, 0x00, 0xff } }, + { "green", { 0x00, 0x80, 0x00, 0xff } }, + { "aqua", { 0x00, 0xff, 0xff, 0xff } }, + { "teal", { 0x00, 0x80, 0x80, 0xff } }, + { "blue", { 0x00, 0x00, 0xff, 0xff } }, + { "navy", { 0x00, 0x00, 0x80, 0xff } }, + { "fuchsia", { 0xff, 0x00, 0xff, 0xff } }, + { "purple", { 0x80, 0x00, 0x80, 0xff } }, +} }; + + +//----------------------------------------------------------------------------- +static const std::map> X11_COLOURS +{ + /* pink */ + { "pink", { 0xff, 0xc0, 0xcb, 0xff } }, + { "lightpink", { 0xff, 0xb6, 0xc1, 0xff } }, + { "hotpink", { 0xff, 0x69, 0xb4, 0xff } }, + { "deeppink", { 0xff, 0x14, 0x93, 0xff } }, + { "palevioletred", { 0xdb, 0x70, 0x93, 0xff } }, + { "mediumvioletred", { 0xc7, 0x15, 0x85, 0xff } }, + + /* red */ + { "lightsalmon", { 0xff, 0xa0, 0x7a, 0xff } }, + { "salmon", { 0xfa, 0x80, 0x72, 0xff } }, + { "darksalmon", { 0xe9, 0x96, 0x7a, 0xff } }, + { "lightcoral", { 0xf0, 0x80, 0x80, 0xff } }, + { "indianred", { 0xcd, 0x5c, 0x5c, 0xff } }, + { "crimson", { 0xdc, 0x14, 0x3c, 0xff } }, + { "firebrick", { 0xb2, 0x22, 0x22, 0xff } }, + { "darkred", { 0x8b, 0x00, 0x00, 0xff } }, + { "red", { 0xff, 0x00, 0x00, 0xff } }, + + /* orange */ + { "orangered", { 0xff, 0x45, 0x00, 0xff } }, + { "tomato", { 0xff, 0x63, 0x47, 0xff } }, + { "coral", { 0xff, 0x7f, 0x50, 0xff } }, + { "darkorange", { 0xff, 0x8c, 0x00, 0xff } }, + { "orange", { 0xff, 0xa5, 0x00, 0xff } }, + + /* yellow */ + { "yellow", { 0xff, 0xff, 0x00, 0xff } }, + { "lightyellow", { 0xff, 0xff, 0xe0, 0xff } }, + { "lemonchiffon", { 0xff, 0xfa, 0xcd, 0xff } }, + { "lightgoldenrodyellow", { 0xfa, 0xfa, 0xd2, 0xff } }, + { "papayawhip", { 0xff, 0xef, 0xd5, 0xff } }, + { "moccasin", { 0xff, 0xe4, 0xb5, 0xff } }, + { "peachpuff", { 0xff, 0xda, 0xb9, 0xff } }, + { "palegoldenrod", { 0xee, 0xe8, 0xaa, 0xff } }, + { "khaki", { 0xf0, 0xe6, 0x8c, 0xff } }, + { "darkkhaki", { 0xbd, 0xb7, 0x6b, 0xff } }, + { "gold", { 0xff, 0xd7, 0x00, 0xff } }, + + /* brown */ + { "cornsilk", { 0xff, 0xf8, 0xdc, 0xff } }, + { "blanchedalmond", { 0xff, 0xeb, 0xcd, 0xff } }, + { "bisque", { 0xff, 0xe4, 0xc4, 0xff } }, + { "navajowhite", { 0xff, 0xde, 0xad, 0xff } }, + { "wheat", { 0xf5, 0xde, 0xb3, 0xff } }, + { "burlywood", { 0xde, 0xb8, 0x87, 0xff } }, + { "tan", { 0xd2, 0xb4, 0x8c, 0xff } }, + { "rosybrown", { 0xbc, 0x8f, 0x8f, 0xff } }, + { "sandybrown", { 0xf4, 0xa4, 0x60, 0xff } }, + { "goldenrod", { 0xda, 0xa5, 0x20, 0xff } }, + { "darkgoldenrod", { 0xb8, 0x86, 0x0b, 0xff } }, + { "peru", { 0xcd, 0x85, 0x3f, 0xff } }, + { "chocolate", { 0xd2, 0x69, 0x1e, 0xff } }, + { "saddlebrown", { 0x8b, 0x45, 0x13, 0xff } }, + { "sienna", { 0xa0, 0x52, 0x2d, 0xff } }, + { "brown", { 0xa5, 0x2a, 0x2a, 0xff } }, + { "maroon", { 0x80, 0x00, 0x00, 0xff } }, + + /* green */ + { "darkolivegreen", { 0x55, 0x6b, 0x2f, 0xff } }, + { "olive", { 0x80, 0x80, 0x00, 0xff } }, + { "olivedrab", { 0x6b, 0x8e, 0x23, 0xff } }, + { "yellowgreen", { 0x9a, 0xcd, 0x32, 0xff } }, + { "limegreen", { 0x32, 0xcd, 0x32, 0xff } }, + { "lime", { 0x00, 0xff, 0x00, 0xff } }, + { "lawngreen", { 0x7c, 0xfc, 0x00, 0xff } }, + { "chartreuse", { 0x7f, 0xff, 0x00, 0xff } }, + { "greenyellow", { 0xad, 0xff, 0x2f, 0xff } }, + { "springgreen", { 0x00, 0xff, 0x7f, 0xff } }, + { "mediumspringgreen", { 0x00, 0xfa, 0x9a, 0xff } }, + { "lightgreen", { 0x90, 0xee, 0x90, 0xff } }, + { "palegreen", { 0x98, 0xfb, 0x98, 0xff } }, + { "darkseagreen", { 0x8f, 0xbc, 0x8f, 0xff } }, + { "mediumseagreen", { 0x3c, 0xb3, 0x71, 0xff } }, + { "seagreen", { 0x2e, 0x8b, 0x57, 0xff } }, + { "forestgreen", { 0x22, 0x8b, 0x22, 0xff } }, + { "green", { 0x00, 0x80, 0x00, 0xff } }, + { "darkgreen", { 0x00, 0x64, 0x00, 0xff } }, + + /* cyan */ + { "mediumaquamarine", { 0x66, 0xcd, 0xaa, 0xff } }, + { "aqua", { 0x00, 0xff, 0xff, 0xff } }, + { "cyan", { 0x00, 0xff, 0xff, 0xff } }, + { "lightcyan", { 0xe0, 0xff, 0xff, 0xff } }, + { "paleturquoise", { 0xaf, 0xee, 0xee, 0xff } }, + { "aquamarine", { 0x7f, 0xff, 0xd4, 0xff } }, + { "turquoise", { 0x40, 0xe0, 0xd0, 0xff } }, + { "mediumturquoise", { 0x48, 0xd1, 0xcc, 0xff } }, + { "darkturquoise", { 0x00, 0xce, 0xd1, 0xff } }, + { "lightseagreen", { 0x20, 0xb2, 0xaa, 0xff } }, + { "cadetblue", { 0x5f, 0x9e, 0xa0, 0xff } }, + { "darkcyan", { 0x00, 0x8b, 0x8b, 0xff } }, + { "teal", { 0x00, 0x80, 0x80, 0xff } }, + + /* blue */ + { "lightsteelblue", { 0xb0, 0xc4, 0xde, 0xff } }, + { "powderblue", { 0xb0, 0xe0, 0xe6, 0xff } }, + { "lightblue", { 0xad, 0xd8, 0xe6, 0xff } }, + { "skyblue", { 0x87, 0xce, 0xeb, 0xff } }, + { "lightskyblue", { 0x87, 0xce, 0xfa, 0xff } }, + { "deepskyblue", { 0x00, 0xbf, 0xff, 0xff } }, + { "dodgerblue", { 0x1e, 0x90, 0xff, 0xff } }, + { "cornflowerblue", { 0x64, 0x95, 0xed, 0xff } }, + { "steelblue", { 0x46, 0x82, 0xb4, 0xff } }, + { "royalblue", { 0x41, 0x69, 0xe1, 0xff } }, + { "blue", { 0x00, 0x00, 0xff, 0xff } }, + { "mediumblue", { 0x00, 0x00, 0xcd, 0xff } }, + { "darkblue", { 0x00, 0x00, 0x8b, 0xff } }, + { "navy", { 0x00, 0x00, 0x80, 0xff } }, + { "midnightblue", { 0x19, 0x19, 0x70, 0xff } }, + + /* purple */ + { "lavender", { 0xe6, 0xe6, 0xfa, 0xff } }, + { "thistle", { 0xd8, 0xbf, 0xd8, 0xff } }, + { "plum", { 0xdd, 0xa0, 0xdd, 0xff } }, + { "violet", { 0xee, 0x82, 0xee, 0xff } }, + { "orchid", { 0xda, 0x70, 0xd6, 0xff } }, + { "fuchsia", { 0xff, 0x00, 0xff, 0xff } }, + { "magenta", { 0xff, 0x00, 0xff, 0xff } }, + { "mediumorchid", { 0xba, 0x55, 0xd3, 0xff } }, + { "mediumpurple", { 0x93, 0x70, 0xdb, 0xff } }, + { "blueviolet", { 0x8a, 0x2b, 0xe2, 0xff } }, + { "darkviolet", { 0x94, 0x00, 0xd3, 0xff } }, + { "darkorchid", { 0x99, 0x32, 0xcc, 0xff } }, + { "darkmagenta", { 0x8b, 0x00, 0x8b, 0xff } }, + { "purple", { 0x80, 0x00, 0x80, 0xff } }, + { "indigo", { 0x4b, 0x00, 0x82, 0xff } }, + { "darkslateblue", { 0x48, 0x3d, 0x8b, 0xff } }, + { "rebeccapurple", { 0x66, 0x33, 0x99, 0xff } }, + { "slateblue", { 0x6a, 0x5a, 0xcd, 0xff } }, + { "mediumslateblue", { 0x7b, 0x68, 0xee, 0xff } }, + + /* white */ + { "white", { 0xff, 0xff, 0xff, 0xff } }, + { "snow", { 0xff, 0xfa, 0xfa, 0xff } }, + { "honeydew", { 0xf0, 0xff, 0xf0, 0xff } }, + { "mintcream", { 0xf5, 0xff, 0xfa, 0xff } }, + { "azure", { 0xf0, 0xff, 0xff, 0xff } }, + { "aliceblue", { 0xf0, 0xf8, 0xff, 0xff } }, + { "ghostwhite", { 0xf8, 0xf8, 0xff, 0xff } }, + { "whitesmoke", { 0xf5, 0xf5, 0xf5, 0xff } }, + { "seashell", { 0xff, 0xf5, 0xee, 0xff } }, + { "beige", { 0xf5, 0xf5, 0xdc, 0xff } }, + { "oldlace", { 0xfd, 0xf5, 0xe6, 0xff } }, + { "floralwhite", { 0xff, 0xfa, 0xf0, 0xff } }, + { "ivory", { 0xff, 0xff, 0xf0, 0xff } }, + { "antiquewhite", { 0xfa, 0xeb, 0xd7, 0xff } }, + { "linen", { 0xfa, 0xf0, 0xe6, 0xff } }, + { "lavenderblush", { 0xff, 0xf0, 0xf5, 0xff } }, + { "mistyrose", { 0xff, 0xe4, 0xe1, 0xff } }, + + /* grey/black */ + { "gainsboro", { 0xdc, 0xdc, 0xdc, 0xff } }, + { "lightgrey", { 0xd3, 0xd3, 0xd3, 0xff } }, + { "silver", { 0xc0, 0xc0, 0xc0, 0xff } }, + { "darkgray", { 0xa9, 0xa9, 0xa9, 0xff } }, + { "gray", { 0x80, 0x80, 0x80, 0xff } }, + { "dimgray", { 0x69, 0x69, 0x69, 0xff } }, + { "lightslategray", { 0x77, 0x88, 0x99, 0xff } }, + { "slategray", { 0x70, 0x80, 0x90, 0xff } }, + { "darkslategray", { 0x2f, 0x4f, 0x4f, 0xff } }, + { "black", { 0x00, 0x00, 0x00, 0xff } }, +}; + + +//----------------------------------------------------------------------------- +template +static colour +lookup_colour (const std::string &name, + const std::map> &map) +{ + std::string lower (name); + std::transform (lower.begin (), lower.end (), lower.begin (), tolower); + + auto pos = map.find (lower); + if (pos == map.end ()) + throw std::out_of_range (name); + + static_assert (S <= 4, "cannot invent additional data"); + return pos->second.template redim ().template cast (); +} + + +//----------------------------------------------------------------------------- +template +colour +colour::from_html (const std::string &name) +{ + return lookup_colour (name, HTML_COLOURS); +} + + +//----------------------------------------------------------------------------- +template +colour +colour::from_x11 (const std::string &name) +{ + return lookup_colour (name, X11_COLOURS); +} diff --git a/colour.hpp b/colour.hpp index fe90c492..3d5b6e85 100644 --- a/colour.hpp +++ b/colour.hpp @@ -42,6 +42,10 @@ namespace util { static const colour RED; static const colour BLUE; static const colour GREEN; + + static colour from_html (const std::string&); + static colour from_x11 (const std::string&); + static colour from_string (const std::string&); }; // Convenience types diff --git a/test/colour.cpp b/test/colour.cpp index 8461fcd0..372ba106 100644 --- a/test/colour.cpp +++ b/test/colour.cpp @@ -18,4 +18,8 @@ main (int, char**) CHECK_EQ (f.cast (), u); CHECK_EQ (u.cast (), f); } + + // Check lookups are working + CHECK_EQ (util::colour4f::from_html ("white"), util::colour4f::WHITE); + CHECK_EQ (util::colour4f::from_x11 ("white"), util::colour4f::WHITE); }