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 "Color.h"
  20 #include "ColorSet.h"
  21
  22 #include "support/convert.h"
  23 #include "support/debug.h"
  24 #include "support/gettext.h"
  25 #include "support/lstrings.h"
  26 #include "support/lassert.h"
  27
  28 #include <map>
  29 #include <cmath>
  30 #include <sstream>
  31 #include <iomanip>
  32
  33
  34 using namespace std;
  35 using namespace lyx::support;
  36
  37 namespace lyx {
  38
  39
  40 struct ColorSet::ColorEntry {
  41         ColorCode lcolor;
  42         char const * guiname;
  43         char const * latexname;
  44         char const * x11name;
  45         char const * lyxname;
  46 };
  47
  48
  49 static int hexstrToInt(string const & str)
  50 {
  51         int val = 0;
  52         istringstream is(str);
  53         is >> setbase(16) >> val;
  54         return val;
  55 }
  56
  57
  58 /////////////////////////////////////////////////////////////////////
  59 //
  60 // RGBColor
  61 //
  62 /////////////////////////////////////////////////////////////////////
  63
  64
  65 string const X11hexname(RGBColor const & col)
  66 {
  67         ostringstream ostr;
  68
  69         ostr << '#' << setbase(16) << setfill('0')
  70              << setw(2) << col.r
  71              << setw(2) << col.g
  72              << setw(2) << col.b;
  73
  74         return ostr.str();
  75 }
  76
  77
  78 RGBColor rgbFromHexName(string const & x11hexname)
  79 {
  80         RGBColor c;
  81         LASSERT(x11hexname.size() == 7 && x11hexname[0] == '#',
  82                 return c);
  83         c.r = hexstrToInt(x11hexname.substr(1, 2));
  84         c.g = hexstrToInt(x11hexname.substr(3, 2));
  85         c.b = hexstrToInt(x11hexname.substr(5, 2));
  86         return c;
  87 }
  88
  89
  90 string const outputLaTeXColor(RGBColor const & color)
  91 {
  92         // this routine returns a LaTeX readable color string in the form
  93         // "red, green, blue" where the colors are a number in the range 0-1
  94         int red = color.r;
  95         int green = color.g;
  96         int blue = color.b;
  97 #ifdef USE_CORRECT_RGB_CONVERSION
  98         int const scale = 255;
  99 #else
 100         // the color values are given in the range of 0-255, so to get
 101         // an output of "0.5" for the value 127 we need to do the following
 102         // FIXME: This is wrong, since it creates a nonlinear mapping:
 103         //        There is a gap between 0/256 and 2/256!
 104         //        0.5 cannot be represented in 8bit hex RGB, it would be 127.5.
 105         if (red != 0)
 106                 ++red;
 107         if (green != 0)
 108                 ++green;
 109         if (blue != 0)
 110                 ++blue;
 111         int const scale = 256;
 112 #endif
 113         string output;
 114         output = convert<string>(float(red) / scale) + ", "
 115                          + convert<string>(float(green) / scale) + ", "
 116                          + convert<string>(float(blue) / scale);
 117         return output;
 118 }
 119
 120
 121 RGBColor const RGBColorFromLaTeX(string const & color)
 122 {
 123         vector<string> rgb = getVectorFromString(color);
 124         while (rgb.size() < 3)
 125                 rgb.push_back("0");
 126         RGBColor c;
 127         for (int i = 0; i < 3; ++i) {
 128                 rgb[i] = trim(rgb[i]);
 129                 if (!isStrDbl(rgb[i]))
 130                         return c;
 131         }
 132 #ifdef USE_CORRECT_RGB_CONVERSION
 133         int const scale = 255;
 134 #else
 135         // FIXME: This is wrong, since it creates a nonlinear mapping:
 136         //        Both 0/256 and 1/256 are mapped to 0!
 137         //        The wrong code exists only to match outputLaTeXColor().
 138         int const scale = 256;
 139 #endif
 140         c.r = static_cast<unsigned int>(scale * convert<double>(rgb[0]) + 0.5);
 141         c.g = static_cast<unsigned int>(scale * convert<double>(rgb[1]) + 0.5);
 142         c.b = static_cast<unsigned int>(scale * convert<double>(rgb[2]) + 0.5);
 143 #ifndef USE_CORRECT_RGB_CONVERSION
 144         if (c.r != 0)
 145                 c.r--;
 146         if (c.g != 0)
 147                 c.g--;
 148         if (c.b != 0)
 149                 c.b--;
 150 #endif
 151         return c;
 152 }
 153
 154
 155 Color::Color(ColorCode base_color) : baseColor(base_color),
 156         mergeColor(Color_ignore)
 157 {}
 158
 159
 160 bool Color::operator==(Color const & color) const
 161 {
 162         return baseColor == color.baseColor;
 163 }
 164
 165
 166 bool Color::operator!=(Color const & color) const
 167 {
 168         return baseColor != color.baseColor;
 169 }
 170
 171
 172 bool Color::operator<(Color const & color) const
 173 {
 174         return baseColor < color.baseColor;
 175 }
 176
 177
 178 bool Color::operator<=(Color const & color) const
 179 {
 180         return baseColor <= color.baseColor;
 181 }
 182
 183
 184 std::ostream & operator<<(std::ostream & os, Color color)
 185 {
 186         os << to_ascii(lcolor.getGUIName(color.baseColor));
 187         if (color.mergeColor != Color_ignore)
 188                 os << "[merged with:"
 189                         << to_ascii(lcolor.getGUIName(color.mergeColor)) << "]";
 190         return os;
 191 }
 192
 193
 194 ColorSet::ColorSet()
 195 {
 196         char const * grey40 = "#666666";
 197         char const * grey60 = "#999999";
 198         char const * grey80 = "#cccccc";
 199         //char const * grey90 = "#e5e5e5";
 200         //  ColorCode, gui, latex, x11, lyx
 201         // Warning: several of these entries are overridden in GuiApplication constructor
 202         static ColorEntry const items[] = {
 203         { Color_none, N_("none"), "none", "black", "none" },
 204         { Color_black, N_("black"), "black", "black", "black" },
 205         { Color_white, N_("white"), "white", "white", "white" },
 206         { Color_red, N_("red"), "red", "red", "red" },
 207         { Color_green, N_("green"), "green", "green", "green" },
 208         { Color_blue, N_("blue"), "blue", "blue", "blue" },
 209         { Color_cyan, N_("cyan"), "cyan", "cyan", "cyan" },
 210         { Color_magenta, N_("magenta"), "magenta", "magenta", "magenta" },
 211         { Color_yellow, N_("yellow"), "yellow", "yellow", "yellow" },
 212         { Color_cursor, N_("cursor"), "cursor", "black", "cursor" },
 213         { Color_background, N_("background"), "background", "linen", "background" },
 214         { Color_foreground, N_("text"), "foreground", "black", "foreground" },
 215         { Color_selection, N_("selection"), "selection", "LightBlue", "selection" },
 216         { Color_selectiontext, N_("selected text"),
 217                 "selectiontext", "black", "selectiontext" },
 218         { Color_latex, N_("LaTeX text"), "latex", "DarkRed", "latex" },
 219         { Color_inlinecompletion, N_("inline completion"),
 220                 "inlinecompletion", grey60, "inlinecompletion" },
 221         { Color_nonunique_inlinecompletion, N_("non-unique inline completion"),
 222                 "nonuniqueinlinecompletion", grey80, "nonuniqueinlinecompletion" },
 223         { Color_preview, N_("previewed snippet"), "preview", "black", "preview" },
 224         { Color_notelabel, N_("note label"), "note", "yellow", "note" },
 225         { Color_notebg, N_("note background"), "notebg", "yellow", "notebg" },
 226         { Color_commentlabel, N_("comment label"), "comment", "magenta", "comment" },
 227         { Color_commentbg, N_("comment background"), "commentbg", "linen", "commentbg" },
 228         { Color_greyedoutlabel, N_("greyedout inset label"), "greyedout", "#ff0080", "greyedout" },
 229         { Color_greyedouttext, N_("greyedout inset text"), "greyedouttext", grey80, "greyedouttext" },
 230         { Color_greyedoutbg, N_("greyedout inset background"), "greyedoutbg", "linen", "greyedoutbg" },
 231         { Color_phantomtext, N_("phantom inset text"), "phantomtext", "#7f7f7f", "phantomtext" },
 232         { Color_shadedbg, N_("shaded box"), "shaded", "#ff0000", "shaded" },
 233         { Color_listingsbg, N_("listings background"), "listingsbg", "white", "listingsbg" },
 234         { Color_branchlabel, N_("branch label"), "branchlabel", "#c88000", "branchlabel" },
 235         { Color_footlabel, N_("footnote label"), "footlabel", "#00aaff", "footlabel" },
 236         { Color_indexlabel, N_("index label"), "indexlabel", "green", "indexlabel" },
 237         { Color_marginlabel, N_("margin note label"), "marginlabel", "#aa55ff", "marginlabel" },
 238         { Color_urllabel, N_("URL label"), "urllabel", "blue", "urllabel" },
 239         { Color_urltext, N_("URL text"), "urltext", "blue", "urltext" },
 240         { Color_depthbar, N_("depth bar"), "depthbar", "IndianRed", "depthbar" },
 241         { Color_scroll, N_("scroll indicator"), "scroll", "IndianRed", "scroll" },
 242         { Color_language, N_("language"), "language", "Blue", "language" },
 243         { Color_command, N_("command inset"), "command", "black", "command" },
 244         { Color_commandbg, N_("command inset background"), "commandbg", "azure", "commandbg" },
 245         { Color_commandframe, N_("command inset frame"), "commandframe", "black", "commandframe" },
 246         { Color_special, N_("special character"), "special", "RoyalBlue", "special" },
 247         { Color_math, N_("math"), "math", "DarkBlue", "math" },
 248         { Color_mathbg, N_("math background"), "mathbg", "linen", "mathbg" },
 249         { Color_graphicsbg, N_("graphics background"), "graphicsbg", "linen", "graphicsbg" },
 250         { Color_mathmacrobg, N_("math macro background"), "mathmacrobg", "linen", "mathmacrobg" },
 251         { Color_mathframe, N_("math frame"), "mathframe", "Magenta", "mathframe" },
 252         { Color_mathcorners, N_("math corners"), "mathcorners", "linen", "mathcorners" },
 253         { Color_mathline, N_("math line"), "mathline", "Blue", "mathline" },
 254         { Color_mathmacrobg, N_("math macro background"), "mathmacrobg", "#ede2d8", "mathmacrobg" },
 255         { Color_mathmacrohoverbg, N_("math macro hovered background"), "mathmacrohoverbg", "#cdc3b8", "mathmacrohoverbg" },
 256         { Color_mathmacrolabel, N_("math macro label"), "mathmacrolabel", "#a19992", "mathmacrolabel" },
 257         { Color_mathmacroframe, N_("math macro frame"), "mathmacroframe", "#ede2d8", "mathmacroframe" },
 258         { Color_mathmacroblend, N_("math macro blended out"), "mathmacroblend", "black", "mathmacroblend" },
 259         { Color_mathmacrooldarg, N_("math macro old parameter"), "mathmacrooldarg", grey80, "mathmacrooldarg" },
 260         { Color_mathmacronewarg, N_("math macro new parameter"), "mathmacronewarg", "black", "mathmacronewarg" },
 261         { Color_collapsable, N_("collapsable inset text"), "collapsable", "DarkRed", "collapsable" },
 262         { Color_collapsableframe, N_("collapsable inset frame"), "collapsableframe", "IndianRed", "collapsableframe" },
 263         { Color_insetbg, N_("inset background"), "insetbg", grey80, "insetbg" },
 264         { Color_insetframe, N_("inset frame"), "insetframe", "IndianRed", "insetframe" },
 265         { Color_error, N_("LaTeX error"), "error", "Red", "error" },
 266         { Color_eolmarker, N_("end-of-line marker"), "eolmarker", "Brown", "eolmarker" },
 267         { Color_appendix, N_("appendix marker"), "appendix", "Brown", "appendix" },
 268         { Color_changebar, N_("change bar"), "changebar", "Blue", "changebar" },
 269         { Color_deletedtext, N_("deleted text"), "deletedtext", "#ff0000", "deletedtext" },
 270         { Color_addedtext, N_("added text"), "addedtext", "#0000ff", "addedtext" },
 271         { Color_changedtextauthor1, N_("changed text 1st author"), "changedtextauthor1", "#0000ff", "changedtextauthor1" },
 272         { Color_changedtextauthor2, N_("changed text 2nd author"), "changedtextauthor2", "#ff00ff", "changedtextauthor2" },
 273         { Color_changedtextauthor3, N_("changed text 3rd author"), "changedtextauthor3", "#ff0000", "changedtextauthor3" },
 274         { Color_changedtextauthor4, N_("changed text 4th author"), "changedtextauthor4", "#aa00ff", "changedtextauthor4" },
 275         { Color_changedtextauthor5, N_("changed text 5th author"), "changedtextauthor5", "#55aa00", "changedtextauthor5" },
 276         { Color_deletedtextmodifier, N_("deleted text modifier"), "deletedtextmodifier", "white", "deletedtextmodifier" },
 277         { Color_added_space, N_("added space markers"), "added_space", "Brown", "added_space" },
 278         { Color_tabularline, N_("table line"), "tabularline", "black", "tabularline" },
 279         { Color_tabularonoffline, N_("table on/off line"), "tabularonoffline",
 280              "LightSteelBlue", "tabularonoffline" },
 281         { Color_bottomarea, N_("bottom area"), "bottomarea", grey40, "bottomarea" },
 282         { Color_newpage, N_("new page"), "newpage", "Blue", "newpage" },
 283         { Color_pagebreak, N_("page break / line break"), "pagebreak", "RoyalBlue", "pagebreak" },
 284         { Color_buttonframe, N_("frame of button"), "buttonframe", "#dcd2c8", "buttonframe" },
 285         { Color_buttonbg, N_("button background"), "buttonbg", "#dcd2c8", "buttonbg" },
 286         { Color_buttonhoverbg, N_("button background under focus"), "buttonhoverbg", "#C7C7CA", "buttonhoverbg" },
 287         { Color_paragraphmarker, N_("paragraph marker"), "paragraphmarker", grey80, "paragraphmarker"},
 288         { Color_previewframe, N_("preview frame"), "previewframe", "black", "previewframe"},
 289         { Color_inherit, N_("inherit"), "inherit", "black", "inherit" },
 290         { Color_regexpframe, N_("regexp frame"), "green", "green", "green" },
 291         { Color_ignore, N_("ignore"), "ignore", "black", "ignore" },
 292         { Color_ignore, 0, 0, 0, 0 }
 293         };
 294
 295         for (int i = 0; items[i].guiname; ++i)
 296                 fill(items[i]);
 297 }
 298
 299
 300 /// initialise a color entry
 301 void ColorSet::fill(ColorEntry const & entry)
 302 {
 303         Information in;
 304         in.lyxname   = entry.lyxname;
 305         in.latexname = entry.latexname;
 306         in.x11name   = entry.x11name;
 307         in.guiname   = entry.guiname;
 308         infotab[entry.lcolor] = in;
 309         lyxcolors[entry.lyxname] = entry.lcolor;
 310         latexcolors[entry.latexname] = entry.lcolor;
 311 }
 312
 313
 314 docstring const ColorSet::getGUIName(ColorCode c) const
 315 {
 316         InfoTab::const_iterator it = infotab.find(c);
 317         if (it != infotab.end())
 318                 return _(it->second.guiname);
 319         return from_ascii("none");
 320 }
 321
 322
 323 string const ColorSet::getX11Name(ColorCode c) const
 324 {
 325         InfoTab::const_iterator it = infotab.find(c);
 326         if (it != infotab.end())
 327                 return it->second.x11name;
 328
 329         lyxerr << "LyX internal error: Missing color"
 330                   " entry in Color.cpp for " << c << '\n'
 331                << "Using black." << endl;
 332         return "black";
 333 }
 334
 335
 336 string const ColorSet::getLaTeXName(ColorCode c) const
 337 {
 338         InfoTab::const_iterator it = infotab.find(c);
 339         if (it != infotab.end())
 340                 return it->second.latexname;
 341         return "black";
 342 }
 343
 344
 345 string const ColorSet::getLyXName(ColorCode c) const
 346 {
 347         InfoTab::const_iterator it = infotab.find(c);
 348         if (it != infotab.end())
 349                 return it->second.lyxname;
 350         return "black";
 351 }
 352
 353
 354 bool ColorSet::setColor(ColorCode col, string const & x11name)
 355 {
 356         InfoTab::iterator it = infotab.find(col);
 357         if (it == infotab.end()) {
 358                 LYXERR0("Color " << col << " not found in database.");
 359                 return false;
 360         }
 361
 362         // "inherit" is returned for colors not in the database
 363         // (and anyway should not be redefined)
 364         if (col == Color_none || col == Color_inherit || col == Color_ignore) {
 365                 LYXERR0("Color " << getLyXName(col) << " may not be redefined.");
 366                 return false;
 367         }
 368
 369         it->second.x11name = x11name;
 370         return true;
 371 }
 372
 373
 374 bool ColorSet::setColor(string const & lyxname, string const &x11name)
 375 {
 376         string const lcname = ascii_lowercase(lyxname);
 377         if (lyxcolors.find(lcname) == lyxcolors.end()) {
 378                 LYXERR(Debug::GUI, "ColorSet::setColor: Unknown color \""
 379                        << lyxname << '"');
 380                 addColor(static_cast<ColorCode>(infotab.size()), lcname);
 381         }
 382
 383         return setColor(lyxcolors[lcname], x11name);
 384 }
 385
 386
 387 void ColorSet::addColor(ColorCode c, string const & lyxname)
 388 {
 389         ColorEntry ce = { c, "", "", "", lyxname.c_str() };
 390         fill(ce);
 391 }
 392
 393
 394 ColorCode ColorSet::getFromLyXName(string const & lyxname) const
 395 {
 396         string const lcname = ascii_lowercase(lyxname);
 397         Transform::const_iterator it = lyxcolors.find(lcname);
 398         if (it == lyxcolors.end()) {
 399                 LYXERR0("ColorSet::getFromLyXName: Unknown color \""
 400                        << lyxname << '"');
 401                 return Color_none;
 402         }
 403
 404         return it->second;
 405 }
 406
 407
 408 ColorCode ColorSet::getFromLaTeXName(string const & latexname) const
 409 {
 410         Transform::const_iterator it = latexcolors.find(latexname);
 411         if (it == latexcolors.end()) {
 412                 lyxerr << "ColorSet::getFromLaTeXName: Unknown color \""
 413                        << latexname << '"' << endl;
 414                 return Color_none;
 415         }
 416
 417         return it->second;
 418 }
 419
 420
 421 // The evil global Color instance
 422 ColorSet lcolor;
 423 // An equally evil global system Color instance
 424 ColorSet system_lcolor;
 425
 426
 427 } // namespace lyx