src/Color.cpp

   1 /**
   2  * \file Color.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Lars Gullik Bjønnes
   8  * \author Matthias Ettrich
   9  * \author Jean-Marc Lasgouttes
  10  * \author John Levon
  11  * \author André Pönitz
  12  * \author Martin Vermeer
  13  *
  14  * Full author contact details are available in file CREDITS.
  15  */
  16
  17 #include <config.h>
  18
  19 #include "debug.h"
  20 #include "gettext.h"
  21 #include "Color.h"
  22 #include "support/lstrings.h"
  23
  24 #include <map>
  25 #include <cmath>
  26 #include <sstream>
  27 #include <iomanip>
  28
  29
  30 #ifndef CXX_GLOBAL_CSTD
  31 using std::floor;
  32 #endif
  33
  34 using std::max;
  35 using std::min;
  36 using std::setw;
  37
  38 using std::istringstream;
  39 using std::ostringstream;
  40 using std::string;
  41 using std::endl;
  42
  43 using lyx::support::compare_ascii_no_case;
  44 using lyx::support::ascii_lowercase;
  45
  46
  47 namespace {
  48
  49 struct ColorEntry {
  50         lyx::Color::color lcolor;
  51         char const * guiname;
  52         char const * latexname;
  53         char const * x11name;
  54         char const * lyxname;
  55 };
  56
  57 int const nohue = -1;
  58
  59 int hexstrToInt(string const & str)
  60 {
  61         int val = 0;
  62         istringstream is(str);
  63         is >> std::setbase(16) >> val;
  64         return val;
  65 }
  66
  67 } // namespace anon
  68
  69
  70
  71 namespace lyx {
  72
  73
  74 /////////////////////////////////////////////////////////////////////
  75 //
  76 // RGBColor
  77 //
  78 /////////////////////////////////////////////////////////////////////
  79
  80
  81 string const X11hexname(RGBColor const & col)
  82 {
  83         ostringstream ostr;
  84
  85         ostr << '#' << std::setbase(16) << std::setfill('0')
  86              << setw(2) << col.r
  87              << setw(2) << col.g
  88              << setw(2) << col.b;
  89
  90         return ostr.str();
  91 }
  92
  93
  94 RGBColor::RGBColor(string const & x11hexname)
  95         : r(0), g(0), b(0)
  96 {
  97         BOOST_ASSERT(x11hexname.size() == 7 && x11hexname[0] == '#');
  98         r = hexstrToInt(x11hexname.substr(1,2));
  99         g = hexstrToInt(x11hexname.substr(3,2));
 100         b = hexstrToInt(x11hexname.substr(5,2));
 101 }
 102
 103
 104 RGBColor::RGBColor(HSVColor const & hsv)
 105 {
 106         double h = hsv.h;
 107         double const s = hsv.s;
 108         double const v = hsv.v;
 109
 110         double rd, gd, bd;
 111
 112         if (h == nohue || s == 0.0) {
 113                 rd = gd = bd = v;
 114         } else {
 115                 if (h == 360.0) h = 0.0;
 116                 h /= 60.0;
 117
 118                 int const j = max(0, static_cast<int>(::floor(h)));
 119                 //if (j < 0) j = 0;
 120
 121                 double const f = h - j;
 122                 double const p = v * (1.0 - s);
 123                 double const q = v * (1.0 - (s * f));
 124                 double const t = v * (1.0 - (s * (1.0 - f)));
 125
 126                 switch (j) {
 127                 case 0:
 128                         rd = v;
 129                         gd = t;
 130                         bd = p;
 131                         break;
 132                 case 1:
 133                         rd = q;
 134                         gd = v;
 135                         bd = p;
 136                         break;
 137                 case 2:
 138                         rd = p;
 139                         gd = v;
 140                         bd = t;
 141                         break;
 142                 case 3:
 143                         rd = p;
 144                         gd = q;
 145                         bd = v;
 146                         break;
 147                 case 4:
 148                         rd = t;
 149                         gd = p;
 150                         bd = v;
 151                         break;
 152                 case 5:
 153                         rd = v;
 154                         gd = p;
 155                         bd = q;
 156                         break;
 157                 default:
 158                         rd = v;
 159                         gd = t;
 160                         bd = p;
 161                         break;  // should never happen.
 162                 }
 163         }
 164
 165         r = static_cast<int>(::floor((rd * 255.0) + 0.5));
 166         g = static_cast<int>(::floor((gd * 255.0) + 0.5));
 167         b = static_cast<int>(::floor((bd * 255.0) + 0.5));
 168 }
 169
 170
 171 /////////////////////////////////////////////////////////////////////
 172 //
 173 // HSVColor
 174 //
 175 /////////////////////////////////////////////////////////////////////
 176
 177 HSVColor::HSVColor(RGBColor const & rgb)
 178 {
 179         double const r = rgb.r / 255.0;
 180         double const g = rgb.g / 255.0;
 181         double const b = rgb.b / 255.0;
 182
 183         double const maxval = max(max(r, g), b);
 184         double const minval = min(min(r, g), b);
 185
 186         v = maxval;
 187
 188         double const diff = maxval - minval;
 189         if (maxval != 0.0)
 190                 s = diff / maxval;
 191         else
 192                 s = 0.0;
 193
 194         h = nohue;
 195         if (s != 0.0) {
 196                 double const rc = (maxval - r) / diff;
 197                 double const gc = (maxval - g) / diff;
 198                 double const bc = (maxval - b) / diff;
 199
 200                 if (r == maxval)
 201                         h = bc - gc;
 202                 else if (g == maxval)
 203                         h = 2.0 + rc - bc;
 204                 else if (b == maxval)
 205                         h = 4.0 + gc - rc;
 206
 207                 h *= 60.0;
 208                 if (h < 0)
 209                         h += 360;
 210         }
 211 }
 212
 213
 214
 215 /////////////////////////////////////////////////////////////////////
 216 //
 217 // Color::Pimpl
 218 //
 219 /////////////////////////////////////////////////////////////////////
 220
 221 class Color::Pimpl {
 222 public:
 223         ///
 224         class information {
 225         public:
 226                 /// the name as it appears in the GUI
 227                 string guiname;
 228                 /// the name used in LaTeX
 229                 string latexname;
 230                 /// the name for X11
 231                 string x11name;
 232                 /// the name for LyX
 233                 string lyxname;
 234         };
 235
 236         /// initialise a color entry
 237         void fill(ColorEntry const & entry)
 238         {
 239                 information in;
 240                 in.lyxname   = entry.lyxname;
 241                 in.latexname = entry.latexname;
 242                 in.x11name   = entry.x11name;
 243                 in.guiname   = entry.guiname;
 244                 infotab[entry.lcolor] = in;
 245                 lyxcolors[entry.lyxname] = entry.lcolor;
 246                 latexcolors[entry.latexname] = entry.lcolor;
 247         }
 248
 249         ///
 250         typedef std::map<Color::color, information> InfoTab;
 251         /// the table of color information
 252         InfoTab infotab;
 253
 254         typedef std::map<string, Color::color> Transform;
 255         /// the transform between LyX color name string and integer code.
 256         Transform lyxcolors;
 257         /// the transform between LaTeX color name string and integer code.
 258         Transform latexcolors;
 259
 260 };
 261
 262
 263 Color::Color()
 264         : pimpl_(new Pimpl)
 265 {
 266         //  Color::color, gui, latex, x11, lyx
 267         static ColorEntry const items[] = {
 268         { none, N_("none"), "none", "black", "none" },
 269         { black, N_("black"), "black", "black", "black" },
 270         { white, N_("white"), "white", "white", "white" },
 271         { red, N_("red"), "red", "red", "red" },
 272         { green, N_("green"), "green", "green", "green" },
 273         { blue, N_("blue"), "blue", "blue", "blue" },
 274         { cyan, N_("cyan"), "cyan", "cyan", "cyan" },
 275         { magenta, N_("magenta"), "magenta", "magenta", "magenta" },
 276         { yellow, N_("yellow"), "yellow", "yellow", "yellow" },
 277         { cursor, N_("cursor"), "cursor", "black", "cursor" },
 278         { background, N_("background"), "background", "linen", "background" },
 279         { foreground, N_("text"), "foreground", "black", "foreground" },
 280         { selection, N_("selection"), "selection", "LightBlue", "selection" },
 281         { latex, N_("LaTeX text"), "latex", "DarkRed", "latex" },
 282         { preview, N_("previewed snippet"), "preview", "black", "preview" },
 283         { note, N_("note"), "note", "blue", "note" },
 284         { notebg, N_("note background"), "notebg", "yellow", "notebg" },
 285         { comment, N_("comment"), "comment", "magenta", "comment" },
 286         { commentbg, N_("comment background"), "commentbg", "linen", "commentbg" },
 287         { greyedout, N_("greyedout inset"), "greyedout", "red", "greyedout" },
 288         { greyedoutbg, N_("greyedout inset background"), "greyedoutbg", "linen", "greyedoutbg" },
 289         { shadedbg, N_("shaded box"), "shaded", "#ff0000", "shaded" },
 290         { depthbar, N_("depth bar"), "depthbar", "IndianRed", "depthbar" },
 291         { language, N_("language"), "language", "Blue", "language" },
 292         { command, N_("command inset"), "command", "black", "command" },
 293         { commandbg, N_("command inset background"), "commandbg", "azure", "commandbg" },
 294         { commandframe, N_("command inset frame"), "commandframe", "black", "commandframe" },
 295         { special, N_("special character"), "special", "RoyalBlue", "special" },
 296         { math, N_("math"), "math", "DarkBlue", "math" },
 297         { mathbg, N_("math background"), "mathbg", "linen", "mathbg" },
 298         { graphicsbg, N_("graphics background"), "graphicsbg", "linen", "graphicsbg" },
 299         { mathmacrobg, N_("Math macro background"), "mathmacrobg", "linen", "mathmacrobg" },
 300         { mathframe, N_("math frame"), "mathframe", "Magenta", "mathframe" },
 301         { mathline, N_("math line"), "mathline", "Blue", "mathline" },
 302         { captionframe, N_("caption frame"), "captionframe", "DarkRed", "captionframe" },
 303         { collapsable, N_("collapsable inset text"), "collapsable", "DarkRed", "collapsable" },
 304         { collapsableframe, N_("collapsable inset frame"), "collapsableframe", "IndianRed", "collapsableframe" },
 305         { insetbg, N_("inset background"), "insetbg", "grey80", "insetbg" },
 306         { insetframe, N_("inset frame"), "insetframe", "IndianRed", "insetframe" },
 307         { error, N_("LaTeX error"), "error", "Red", "error" },
 308         { eolmarker, N_("end-of-line marker"), "eolmarker", "Brown", "eolmarker" },
 309         { appendix, N_("appendix marker"), "appendix", "Brown", "appendix" },
 310         { changebar, N_("change bar"), "changebar", "Blue", "changebar" },
 311         { strikeout, N_("Deleted text"), "strikeout", "Red", "strikeout" },
 312         { newtext, N_("Added text"), "newtext", "Blue", "newtext" },
 313         { added_space, N_("added space markers"), "added_space", "Brown", "added_space" },
 314         { topline, N_("top/bottom line"), "topline", "Brown", "topline" },
 315         { tabularline, N_("table line"), "tabularline", "black",
 316              "tabularline" },
 317         { tabularonoffline, N_("table on/off line"), "tabularonoffline",
 318              "LightSteelBlue", "tabularonoffline" },
 319         { bottomarea, N_("bottom area"), "bottomarea", "grey40", "bottomarea" },
 320         { pagebreak, N_("page break"), "pagebreak", "RoyalBlue", "pagebreak" },
 321         { buttonframe, N_("frame of button"), "buttonframe", "#dcd2c8", "buttonframe" },
 322         { buttonbg, N_("button background"), "buttonbg", "#dcd2c8", "buttonbg" },
 323         { buttonhoverbg, N_("button background under focus"), "buttonhoverbg", "#C7C7CA", "buttonhoverbg" },
 324         { inherit, N_("inherit"), "inherit", "black", "inherit" },
 325         { ignore, N_("ignore"), "ignore", "black", "ignore" },
 326         { ignore, 0, 0, 0, 0 }
 327         };
 328
 329         for (int i = 0; items[i].guiname; ++i)
 330                 pimpl_->fill(items[i]);
 331 }
 332
 333
 334 Color::Color(Color const & c)
 335         : pimpl_(new Pimpl(*c.pimpl_))
 336 {}
 337
 338
 339 Color::~Color()
 340 {}
 341
 342
 343 Color & Color::operator=(Color tmp)
 344 {
 345         boost::swap(pimpl_, tmp.pimpl_);
 346         return *this;
 347 }
 348
 349
 350 docstring const Color::getGUIName(Color::color c) const
 351 {
 352         Pimpl::InfoTab::const_iterator it = pimpl_->infotab.find(c);
 353         if (it != pimpl_->infotab.end())
 354                 return _(it->second.guiname);
 355         return from_ascii("none");
 356 }
 357
 358
 359 string const Color::getX11Name(Color::color c) const
 360 {
 361         Pimpl::InfoTab::const_iterator it = pimpl_->infotab.find(c);
 362         if (it != pimpl_->infotab.end())
 363                 return it->second.x11name;
 364
 365         lyxerr << "LyX internal error: Missing color"
 366                   " entry in Color.cpp for " << c << '\n'
 367                << "Using black." << endl;
 368         return "black";
 369 }
 370
 371
 372 string const Color::getLaTeXName(Color::color c) const
 373 {
 374         Pimpl::InfoTab::const_iterator it = pimpl_->infotab.find(c);
 375         if (it != pimpl_->infotab.end())
 376                 return it->second.latexname;
 377         return "black";
 378 }
 379
 380
 381 string const Color::getLyXName(Color::color c) const
 382 {
 383         Pimpl::InfoTab::const_iterator it = pimpl_->infotab.find(c);
 384         if (it != pimpl_->infotab.end())
 385                 return it->second.lyxname;
 386         return "black";
 387 }
 388
 389
 390 bool Color::setColor(Color::color col, string const & x11name)
 391 {
 392         Pimpl::InfoTab::iterator it = pimpl_->infotab.find(col);
 393         if (it == pimpl_->infotab.end()) {
 394                 lyxerr << "Color " << col << " not found in database."
 395                        << std::endl;
 396                 return false;
 397         }
 398
 399         // "inherit" is returned for colors not in the database
 400         // (and anyway should not be redefined)
 401         if (col == none || col == inherit || col == ignore) {
 402                 lyxerr << "Color " << getLyXName(col)
 403                        << " may not be redefined" << endl;
 404                 return false;
 405         }
 406
 407         it->second.x11name = x11name;
 408         return true;
 409 }
 410
 411
 412 bool Color::setColor(string const & lyxname, string const &x11name)
 413 {
 414         string const lcname = ascii_lowercase(lyxname);
 415         if (pimpl_->lyxcolors.find(lcname) == pimpl_->lyxcolors.end()) {
 416                 LYXERR(Debug::GUI)
 417                         << "Color::setColor: Unknown color \""
 418                        << lyxname << '"' << endl;
 419                 addColor(static_cast<color>(pimpl_->infotab.size()), lcname);
 420         }
 421
 422         return setColor(pimpl_->lyxcolors[lcname], x11name);
 423 }
 424
 425
 426 void Color::addColor(Color::color c, string const & lyxname) const
 427 {
 428         ColorEntry ce = { c, "", "", "", lyxname.c_str() };
 429         pimpl_->fill(ce);
 430 }
 431
 432
 433 Color::color Color::getFromLyXName(string const & lyxname) const
 434 {
 435         string const lcname = ascii_lowercase(lyxname);
 436         if (pimpl_->lyxcolors.find(lcname) == pimpl_->lyxcolors.end()) {
 437                 lyxerr << "Color::getFromLyXName: Unknown color \""
 438                        << lyxname << '"' << endl;
 439                 return none;
 440         }
 441
 442         return pimpl_->lyxcolors[lcname];
 443 }
 444
 445
 446 Color::color Color::getFromLaTeXName(string const & latexname) const
 447 {
 448         if (pimpl_->latexcolors.find(latexname) == pimpl_->latexcolors.end()) {
 449                 lyxerr << "Color::getFromLaTeXName: Unknown color \""
 450                        << latexname << '"' << endl;
 451                 return none;
 452         }
 453
 454         return pimpl_->latexcolors[latexname];
 455 }
 456
 457
 458 // The evil global Color instance
 459 Color lcolor;
 460 // An equally evil global system Color instance
 461 Color system_lcolor;
 462
 463
 464 } // namespace lyx