src/fl_symbols.cxx

   1 //
   2 // "$Id: fl_symbols.cxx 7903 2010-11-28 21:06:39Z matt $"
   3 //
   4 // Symbol drawing code for the Fast Light Tool Kit (FLTK).
   5 //
   6 // Copyright 1998-2010 by Bill Spitzak and others.
   7 //
   8 // This library is free software; you can redistribute it and/or
   9 // modify it under the terms of the GNU Library General Public
  10 // License as published by the Free Software Foundation; either
  11 // version 2 of the License, or (at your option) any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 // Library General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU Library General Public
  19 // License along with this library; if not, write to the Free Software
  20 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21 // USA.
  22 //
  23 // Please report all bugs and problems on the following page:
  24 //
  25 //     http://www.fltk.org/str.php
  26 //
  27
  28 // These are small graphics drawn by the normal label-drawing
  29 // code when the string starts with an '@' sign.
  30
  31 // Adapted from original code written by:
  32
  33 // Written by Mark Overmars
  34 // Version 2.1 a
  35 // Date: Oct  2, 1992
  36
  37 #include <FL/Fl.H>
  38 #include <FL/fl_draw.H>
  39 #include <FL/math.h>
  40 #include "flstring.h"
  41
  42 typedef struct {
  43   const char *name;
  44   void (*drawit)(Fl_Color);
  45   char scalable;
  46   char notempty;
  47 } SYMBOL;
  48
  49 #define MAXSYMBOL       211
  50    /* Maximal number of symbols in table. Only half of them are
  51       used. Should be prime. */
  52
  53 static SYMBOL symbols[MAXSYMBOL];      /* The symbols */
  54 static int symbnumb = -1;              /* Their number */
  55
  56 static int find(const char *name) {
  57 // returns hash entry if it exists, or first empty slot:
  58   int pos = name[0] ? (
  59     name[1] ? (
  60       name[2] ? 71*name[0]+31*name[1]+name[2] : 31*name[0]+name[1]
  61     ) :
  62       name[0]
  63   ) : 0;
  64   pos %= MAXSYMBOL;
  65   int hh2 = name[0] ? (
  66     (name[1]) ? 51*name[0]+3*name[1] : 3*name[0]
  67     ) : 1;
  68   hh2 %= MAXSYMBOL; if (!hh2) hh2 = 1;
  69   for (;;) {
  70     if (!symbols[pos].notempty) return pos;
  71     if (!strcmp(symbols[pos].name,name)) return pos;
  72     pos = (pos + hh2) % MAXSYMBOL;
  73   }
  74 }
  75
  76 static void fl_init_symbols(void);
  77
  78 /**************** The routines seen by the user *************************/
  79
  80 /**
  81   Adds a symbol to the system.
  82   \param[in] name     name of symbol (without the "@")
  83   \param[in] drawit   function to draw symbol
  84   \param[in] scalable set to 1 if \p drawit uses scalable vector drawing
  85   \returns 1 on success, 0 on failure
  86   */
  87 int fl_add_symbol(const char *name, void (*drawit)(Fl_Color), int scalable)
  88 {
  89   fl_init_symbols();
  90   int pos;
  91   if (symbnumb > MAXSYMBOL / 2) return 0;       // table is full
  92   pos = find(name);
  93   symbols[pos].name = name;
  94   symbols[pos].drawit = drawit;
  95   symbols[pos].notempty = 1;
  96   symbols[pos].scalable = scalable;
  97   symbnumb++;
  98   return 1;
  99 }
 100
 101 int fl_return_arrow(int x,int y,int w,int h);
 102
 103 /**
 104   Draw the named symbol in the given rectangle using the given color
 105   \param[in] label name of symbol
 106   \param[in] x,y   position of symbol
 107   \param[in] w,h   size of symbol
 108   \param[in] col   color of symbox
 109   \returns 1 on success, 0 on failure
 110   */
 111 // provided for back compatibility:
 112 int fl_draw_symbol(const char *label,int x,int y,int w,int h,Fl_Color col) {
 113   const char *p = label;
 114   if (*p++ != '@') return 0;
 115   fl_init_symbols();
 116   int equalscale = 0;
 117   if (*p == '#') {equalscale = 1; p++;}
 118   if (*p == '-' && p[1]>='1' && p[1]<='9') {
 119     int n = p[1]-'0';
 120     x += n; y += n; w -= 2*n; h -= 2*n;
 121     p += 2;
 122   } else if (*p == '+' && p[1]>='1' && p[1]<='9') {
 123     int n = p[1]-'0';
 124     x -= n; y -= n; w += 2*n; h += 2*n;
 125     p += 2;
 126   }
 127   if (w < 10) {x -= (10-w)/2; w = 10;}
 128   if (h < 10) {y -= (10-h)/2; h = 10;}
 129   w = (w-1)|1; h = (h-1)|1;
 130   char flip_x = 0, flip_y = 0;
 131   if (*p=='$') {
 132     flip_x = 1;
 133     p++;
 134   }
 135   if (*p=='%') {
 136     flip_y = 1;
 137     p++;
 138   }
 139   int rotangle;
 140   switch (*p++) {
 141   case '0':
 142     rotangle = 1000*(p[1]-'0') + 100*(p[2]-'0') + 10*(p[3]-'0');
 143     p += 4;
 144     break;
 145   case '1': rotangle = 2250; break;
 146   case '2': rotangle = 2700; break;
 147   case '3': rotangle = 3150; break;
 148   case '4': rotangle = 1800; break;
 149   case '5':
 150   case '6': rotangle = 0; break;
 151   case '7': rotangle = 1350; break;
 152   case '8': rotangle =  900; break;
 153   case '9': rotangle =  450; break;
 154   default: rotangle = 0; p--; break;
 155   }
 156   int pos = find(p);
 157   if (!symbols[pos].notempty) return 0;
 158   if (symbols[pos].scalable == 3) { // kludge to detect return arrow
 159     fl_return_arrow(x,y,w,h);
 160     return 1;
 161   }
 162   fl_push_matrix();
 163   fl_translate(x+w/2,y+h/2);
 164   if (symbols[pos].scalable) {
 165     if (equalscale) {if (w<h) h = w; else w = h;}
 166     fl_scale(0.5*w, 0.5*h);
 167     fl_rotate(rotangle/10.0);
 168     if (flip_x) fl_scale(-1.0, 1.0);
 169     if (flip_y) fl_scale(1.0, -1.0);
 170   }
 171   (symbols[pos].drawit)(col);
 172   fl_pop_matrix();
 173   return 1;
 174 }
 175
 176 /******************** THE DEFAULT SYMBOLS ****************************/
 177
 178 /* Some help stuff */
 179
 180 #define BP fl_begin_polygon()
 181 #define EP fl_end_polygon()
 182 #define BCP fl_begin_complex_polygon()
 183 #define ECP fl_end_complex_polygon()
 184 #define BL fl_begin_line()
 185 #define EL fl_end_line()
 186 #define BC fl_begin_loop()
 187 #define EC fl_end_loop()
 188 #define vv(x,y) fl_vertex(x,y)
 189
 190 //for the outline color
 191 static void set_outline_color(Fl_Color c) {
 192   fl_color(fl_darker(c));
 193 }
 194
 195 static void rectangle(double x,double y,double x2,double y2,Fl_Color col) {
 196   fl_color(col);
 197   BP; vv(x,y); vv(x2,y); vv(x2,y2); vv(x,y2); EP;
 198   set_outline_color(col);
 199   BC; vv(x,y); vv(x2,y); vv(x2,y2); vv(x,y2); EC;
 200 }
 201
 202 /* The drawing routines */
 203
 204 static void draw_fltk(Fl_Color col)
 205 {
 206   fl_color(col);
 207   // F fill
 208   BCP; vv(-2.0, -0.5); vv(-1.0, -0.5); vv(-1.0, -0.3); vv(-1.8, -0.3);
 209   vv(-1.8, -0.1); vv(-1.2, -0.1); vv(-1.2, 0.1); vv(-1.8, 0.1);
 210   vv(-1.8, 0.5); vv(-2.0, 0.5); ECP;
 211   // L fill
 212   BCP; vv(-1.0, -0.5); vv(-0.8, -0.5); vv(-0.8, 0.3); vv(0.0, 0.3);
 213   vv(0.0, 0.5); vv(-1.0, 0.5); ECP;
 214   // T outline
 215   BCP; vv(-0.1, -0.5); vv(1.1, -0.5); vv(1.1, -0.3); vv(0.6, -0.3);
 216   vv(0.6, 0.5); vv(0.4, 0.5); vv(0.4, -0.3); vv(-0.1, -0.3); ECP;
 217   // K outline
 218   BCP; vv(1.1, -0.5); vv(1.3, -0.5); vv(1.3, -0.15); vv(1.70, -0.5);
 219   vv(2.0, -0.5); vv(1.43, 0.0); vv(2.0, 0.5); vv(1.70, 0.5);
 220   vv(1.3, 0.15); vv(1.3, 0.5); vv(1.1, 0.5); ECP;
 221   set_outline_color(col);
 222   // F outline
 223   BC; vv(-2.0, -0.5); vv(-1.0, -0.5); vv(-1.0, -0.3); vv(-1.8, -0.3);
 224   vv(-1.8, -0.1); vv(-1.2, -0.1); vv(-1.2, 0.1); vv(-1.8, 0.1);
 225   vv(-1.8, 0.5); vv(-2.0, 0.5); EC;
 226   // L outline
 227   BC; vv(-1.0, -0.5); vv(-0.8, -0.5); vv(-0.8, 0.3); vv(0.0, 0.3);
 228   vv(0.0, 0.5); vv(-1.0, 0.5); EC;
 229   // T outline
 230   BC; vv(-0.1, -0.5); vv(1.1, -0.5); vv(1.1, -0.3); vv(0.6, -0.3);
 231   vv(0.6, 0.5); vv(0.4, 0.5); vv(0.4, -0.3); vv(-0.1, -0.3); EC;
 232   // K outline
 233   BC; vv(1.1, -0.5); vv(1.3, -0.5); vv(1.3, -0.15); vv(1.70, -0.5);
 234   vv(2.0, -0.5); vv(1.43, 0.0); vv(2.0, 0.5); vv(1.70, 0.5);
 235   vv(1.3, 0.15); vv(1.3, 0.5); vv(1.1, 0.5); EC;
 236 }
 237
 238 static void draw_search(Fl_Color col)
 239 {
 240   fl_color(col);
 241   BP; vv(-.4, .13); vv(-1.0, .73); vv(-.73, 1.0); vv(-.13, .4); EP;
 242   set_outline_color(col);
 243   fl_line_style(FL_SOLID, 3, 0);
 244   BC; fl_circle(.2, -.2, .6); EC;
 245   fl_line_style(FL_SOLID, 1, 0);
 246   BC; vv(-.4, .13); vv(-1.0, .73); vv(-.73, 1.0); vv(-.13, .4); EC;
 247 }
 248
 249 static void draw_arrow1(Fl_Color col)
 250 {
 251   fl_color(col);
 252   BP; vv(-0.8,-0.4); vv(-0.8,0.4); vv(0.0,0.4); vv(0.0,-0.4); EP;
 253   BP; vv(0.0,0.8); vv(0.8,0.0); vv(0.0,-0.8); vv(0.0,-0.4); vv(0.0,0.4); EP;
 254   set_outline_color(col);
 255   BC; vv(-0.8,-0.4); vv(-0.8,0.4); vv(0.0,0.4); vv(0.0,0.8); vv(0.8,0.0);
 256       vv(0.0,-0.8); vv(0.0,-0.4); EC;
 257 }
 258
 259 static void draw_arrow1bar(Fl_Color col)
 260 {
 261   draw_arrow1(col);
 262   rectangle(.6,-.8,.9,.8,col);
 263 }
 264
 265 static void draw_arrow2(Fl_Color col)
 266 {
 267   fl_color(col);
 268   BP; vv(-0.3,0.8); vv(0.50,0.0); vv(-0.3,-0.8); EP;
 269   set_outline_color(col);
 270   BC; vv(-0.3,0.8); vv(0.50,0.0); vv(-0.3,-0.8); EC;
 271 }
 272
 273 static void draw_arrow3(Fl_Color col)
 274 {
 275   fl_color(col);
 276   BP; vv(0.1,0.8); vv(0.9,0.0); vv(0.1,-0.8); EP;
 277   BP; vv(-0.7,0.8); vv(0.1,0.0); vv(-0.7,-0.8); EP;
 278   set_outline_color(col);
 279   BC; vv(0.1,0.8); vv(0.9,0.0); vv(0.1,-0.8); EC;
 280   BC; vv(-0.7,0.8); vv(0.1,0.0); vv(-0.7,-0.8); EC;
 281 }
 282
 283 static void draw_arrowbar(Fl_Color col)
 284 {
 285   fl_color(col);
 286   BP; vv(0.2,0.8); vv(0.6,0.8); vv(0.6,-0.8); vv(0.2,-0.8); EP;
 287   BP; vv(-0.6,0.8); vv(0.2,0.0); vv(-0.6,-0.8); EP;
 288   set_outline_color(col);
 289   BC; vv(0.2,0.8); vv(0.6,0.8); vv(0.6,-0.8); vv(0.2,-0.8); EC;
 290   BC; vv(-0.6,0.8); vv(0.2,0.0); vv(-0.6,-0.8); EC;
 291 }
 292
 293 static void draw_arrowbox(Fl_Color col)
 294 {
 295   fl_color(col);
 296   BP; vv(-0.6,0.8); vv(0.2,0.0); vv(-0.6,-0.8); EP;
 297   BC; vv(0.2,0.8); vv(0.6,0.8); vv(0.6,-0.8); vv(0.2,-0.8); EC;
 298   set_outline_color(col);
 299   BC; vv(0.2,0.8); vv(0.6,0.8); vv(0.6,-0.8); vv(0.2,-0.8); EC;
 300   BC; vv(-0.6,0.8); vv(0.2,0.0); vv(-0.6,-0.8); EC;
 301 }
 302
 303 static void draw_bararrow(Fl_Color col)
 304 {
 305   fl_color(col);
 306   BP; vv(0.1,0.8); vv(0.9,0.0); vv(0.1,-0.8); EP;
 307   BP; vv(-0.5,0.8); vv(-0.1,0.8); vv(-0.1,-0.8); vv(-0.5,-0.8); EP;
 308   set_outline_color(col);
 309   BC; vv(0.1,0.8); vv(0.9,0.0); vv(0.1,-0.8); EC;
 310   BC; vv(-0.5,0.8); vv(-0.1,0.8); vv(-0.1,-0.8); vv(-0.5,-0.8); EC;
 311 }
 312
 313 static void draw_doublebar(Fl_Color col) {
 314   rectangle(-0.6,-0.8,-.1,.8,col);
 315   rectangle(.1,-0.8,.6,.8,col);
 316 }
 317
 318 static void draw_arrow01(Fl_Color col)
 319   { fl_rotate(180); draw_arrow1(col); }
 320
 321 static void draw_arrow02(Fl_Color col)
 322   { fl_rotate(180); draw_arrow2(col); }
 323
 324 static void draw_arrow03(Fl_Color col)
 325   { fl_rotate(180); draw_arrow3(col); }
 326
 327 static void draw_0arrowbar(Fl_Color col)
 328   { fl_rotate(180); draw_arrowbar(col); }
 329
 330 static void draw_0arrowbox(Fl_Color col)
 331   { fl_rotate(180); draw_arrowbox(col); }
 332
 333 static void draw_0bararrow(Fl_Color col)
 334   { fl_rotate(180); draw_bararrow(col); }
 335
 336 static void draw_doublearrow(Fl_Color col)
 337 {
 338   fl_color(col);
 339   BP; vv(-0.35,-0.4); vv(-0.35,0.4); vv(0.35,0.4); vv(0.35,-0.4); EP;
 340   BP; vv(0.15,0.8); vv(0.95,0.0); vv(0.15,-0.8); EP;
 341   BP; vv(-0.15,0.8); vv(-0.95,0.0); vv(-0.15,-0.8); EP;
 342   set_outline_color(col);
 343   BC; vv(-0.15,0.4); vv(0.15,0.4); vv(0.15,0.8); vv(0.95,0.0);
 344       vv(0.15,-0.8); vv(0.15,-0.4); vv(-0.15,-0.4); vv(-0.15,-0.8);
 345       vv(-0.95,0.0); vv(-0.15,0.8); EC;
 346 }
 347
 348 static void draw_arrow(Fl_Color col)
 349 {
 350   fl_color(col);
 351   BP; vv(0.65,0.1); vv(1.0,0.0); vv(0.65,-0.1); EP;
 352   BL; vv(-1.0,0.0); vv(0.65,0.0); EL;
 353   set_outline_color(col);
 354   BL; vv(-1.0,0.0); vv(0.65,0.0); EL;
 355   BC; vv(0.65,0.1); vv(1.0,0.0); vv(0.65,-0.1); EC;
 356 }
 357
 358 static void draw_square(Fl_Color col)
 359   { rectangle(-1,-1,1,1,col); }
 360
 361 static void draw_circle(Fl_Color col) {
 362   fl_color(col); BP; fl_circle(0,0,1); EP;
 363   set_outline_color(col);
 364   BC; fl_circle(0,0,1); EC;
 365 }
 366
 367 static void draw_line(Fl_Color col)
 368   { fl_color(col); BL; vv(-1.0,0.0); vv(1.0,0.0); EL; }
 369
 370 static void draw_plus(Fl_Color col)
 371 {
 372   fl_color(col);
 373   BP; vv(-0.9,-0.15); vv(-0.9,0.15); vv(0.9,0.15); vv(0.9,-0.15); EP;
 374   BP; vv(-0.15,-0.9); vv(-0.15,0.9); vv(0.15,0.9); vv(0.15,-0.9); EP;
 375   set_outline_color(col);
 376   BC;
 377   vv(-0.9,-0.15); vv(-0.9,0.15); vv(-0.15,0.15); vv(-0.15,0.9);
 378   vv(0.15,0.9); vv(0.15,0.15); vv(0.9,0.15); vv(0.9,-0.15);
 379   vv(0.15,-0.15); vv(0.15,-0.9); vv(-0.15,-0.9); vv(-0.15,-0.15);
 380   EC;
 381 }
 382
 383 static void draw_uparrow(Fl_Color) {
 384   fl_color(FL_LIGHT3);
 385   BL; vv(-.8,.8); vv(-.8,-.8); vv(.8,0); EL;
 386   fl_color(FL_DARK3);
 387   BL; vv(-.8,.8); vv(.8, 0); EL;
 388 }
 389
 390 static void draw_downarrow(Fl_Color) {
 391   fl_color(FL_DARK3);
 392   BL; vv(-.8,.8); vv(-.8,-.8); vv(.8,0); EL;
 393   fl_color(FL_LIGHT3);
 394   BL; vv(-.8,.8); vv(.8, 0); EL;
 395 }
 396
 397 static void draw_menu(Fl_Color col)
 398 {
 399   rectangle(-0.65, 0.85, 0.65, -0.25, col);
 400   rectangle(-0.65, -0.6, 0.65, -1.0, col);
 401 }
 402
 403 // Standard UI icons...
 404 static void draw_filenew(Fl_Color c) {
 405   fl_color(c);
 406   BCP;
 407     vv(-0.7, -1.0);
 408     vv(0.1, -1.0);
 409     vv(0.1, -0.4);
 410     vv(0.7, -0.4);
 411     vv(0.7, 1.0);
 412     vv(-0.7, 1.0);
 413   ECP;
 414
 415   fl_color(fl_lighter(c));
 416   BP;
 417     vv(0.1, -1.0);
 418     vv(0.1, -0.4);
 419     vv(0.7, -0.4);
 420   EP;
 421
 422   fl_color(fl_darker(c));
 423   BC;
 424     vv(-0.7, -1.0);
 425     vv(0.1, -1.0);
 426     vv(0.1, -0.4);
 427     vv(0.7, -0.4);
 428     vv(0.7, 1.0);
 429     vv(-0.7, 1.0);
 430   EC;
 431
 432   BL;
 433     vv(0.1, -1.0);
 434     vv(0.7, -0.4);
 435   EL;
 436 }
 437
 438 static void draw_fileopen(Fl_Color c) {
 439   fl_color(c);
 440   BP;
 441     vv(-1.0, -0.7);
 442     vv(-0.9, -0.8);
 443     vv(-0.4, -0.8);
 444     vv(-0.3, -0.7);
 445     vv(0.6, -0.7);
 446     vv(0.6, 0.7);
 447     vv(-1.0, 0.7);
 448   EP;
 449
 450   fl_color(fl_darker(c));
 451   BC;
 452     vv(-1.0, -0.7);
 453     vv(-0.9, -0.8);
 454     vv(-0.4, -0.8);
 455     vv(-0.3, -0.7);
 456     vv(0.6, -0.7);
 457     vv(0.6, 0.7);
 458     vv(-1.0, 0.7);
 459   EC;
 460
 461   fl_color(fl_lighter(c));
 462   BP;
 463     vv(-1.0, 0.7);
 464     vv(-0.6, -0.3);
 465     vv(1.0, -0.3);
 466     vv(0.6, 0.7);
 467   EP;
 468
 469   fl_color(fl_darker(c));
 470   BC;
 471     vv(-1.0, 0.7);
 472     vv(-0.6, -0.3);
 473     vv(1.0, -0.3);
 474     vv(0.6, 0.7);
 475   EC;
 476 }
 477
 478 static void draw_filesave(Fl_Color c) {
 479   fl_color(c);
 480   BP;
 481     vv(-0.9, -1.0);
 482     vv(0.9, -1.0);
 483     vv(1.0, -0.9);
 484     vv(1.0, 0.9);
 485     vv(0.9, 1.0);
 486     vv(-0.9, 1.0);
 487     vv(-1.0, 0.9);
 488     vv(-1.0, -0.9);
 489   EP;
 490
 491   fl_color(fl_lighter(c));
 492   BP;
 493     vv(-0.7, -1.0);
 494     vv(0.7, -1.0);
 495     vv(0.7, -0.4);
 496     vv(-0.7, -0.4);
 497   EP;
 498
 499   BP;
 500     vv(-0.7, 0.0);
 501     vv(0.7, 0.0);
 502     vv(0.7, 1.0);
 503     vv(-0.7, 1.0);
 504   EP;
 505
 506   fl_color(c);
 507   BP;
 508     vv(-0.5, -0.9);
 509     vv(-0.3, -0.9);
 510     vv(-0.3, -0.5);
 511     vv(-0.5, -0.5);
 512   EP;
 513
 514   fl_color(fl_darker(c));
 515   BC;
 516     vv(-0.9, -1.0);
 517     vv(0.9, -1.0);
 518     vv(1.0, -0.9);
 519     vv(1.0, 0.9);
 520     vv(0.9, 1.0);
 521     vv(-0.9, 1.0);
 522     vv(-1.0, 0.9);
 523     vv(-1.0, -0.9);
 524   EC;
 525 }
 526
 527 static void draw_filesaveas(Fl_Color c) {
 528   draw_filesave(c);
 529
 530   fl_color(fl_color_average(c, FL_WHITE, 0.25f));
 531   BP;
 532     vv(0.6, -0.8);
 533     vv(1.0, -0.4);
 534     vv(0.0, 0.6);
 535     vv(-0.4, 0.6);
 536     vv(-0.4, 0.2);
 537   EP;
 538
 539   fl_color(fl_darker(c));
 540   BC;
 541     vv(0.6, -0.8);
 542     vv(1.0, -0.4);
 543     vv(0.0, 0.6);
 544     vv(-0.4, 0.6);
 545     vv(-0.4, 0.2);
 546   EC;
 547
 548   BP;
 549     vv(-0.1, 0.6);
 550     vv(-0.4, 0.6);
 551     vv(-0.4, 0.3);
 552   EP;
 553 }
 554
 555 static void draw_fileprint(Fl_Color c) {
 556   fl_color(c);
 557   BP;
 558     vv(-0.8, 0.0);
 559     vv(0.8, 0.0);
 560     vv(1.0, 0.2);
 561     vv(1.0, 1.0);
 562     vv(-1.0, 1.0);
 563     vv(-1.0, 0.2);
 564   EP;
 565
 566   fl_color(fl_color_average(c, FL_WHITE, 0.25f));
 567   BP;
 568     vv(-0.6, 0.0);
 569     vv(-0.6, -1.0);
 570     vv(0.6, -1.0);
 571     vv(0.6, 0.0);
 572   EP;
 573
 574   fl_color(fl_lighter(c));
 575   BP;
 576     vv(-0.6, 0.6);
 577     vv(0.6, 0.6);
 578     vv(0.6, 1.0);
 579     vv(-0.6, 1.0);
 580   EP;
 581
 582   fl_color(fl_darker(c));
 583   BC;
 584     vv(-0.8, 0.0);
 585     vv(-0.6, 0.0);
 586     vv(-0.6, -1.0);
 587     vv(0.6, -1.0);
 588     vv(0.6, 0.0);
 589     vv(0.8, 0.0);
 590     vv(1.0, 0.2);
 591     vv(1.0, 1.0);
 592     vv(-1.0, 1.0);
 593     vv(-1.0, 0.2);
 594   EC;
 595
 596   BC;
 597     vv(-0.6, 0.6);
 598     vv(0.6, 0.6);
 599     vv(0.6, 1.0);
 600     vv(-0.6, 1.0);
 601   EC;
 602 }
 603
 604 static void draw_round_arrow(Fl_Color c, float da=5.0) {
 605   double a, r, dr1=0.005, dr2=0.015;
 606   int i, j;
 607   for (j=0; j<2; j++) {
 608     if (j&1) {
 609       fl_color(c);
 610       set_outline_color(c);
 611       BC;
 612     } else {
 613       fl_color(c);
 614       BCP;
 615     }
 616     vv(-0.1, 0.0);
 617     vv(-1.0, 0.0);
 618     vv(-1.0, 0.9);
 619     for (i=27, a=140.0, r=1.0; i>0; i--, a-=da, r-=dr1) {
 620       double ar = a/180.0 * M_PI;
 621       vv(cos(ar)*r, sin(ar)*r);
 622     }
 623     for (i=27; i>=0; a+=da, i--, r-=dr2) {
 624       double ar = a/180.0 * M_PI;
 625       vv(cos(ar)*r, sin(ar)*r);
 626     }
 627     if (j&1) {
 628       EC;
 629     } else {
 630       ECP;
 631     }
 632   }
 633 }
 634
 635 static void draw_refresh(Fl_Color c) {
 636   draw_round_arrow(c);
 637   fl_rotate(180.0);
 638   draw_round_arrow(c);
 639   fl_rotate(-180.0);
 640 }
 641
 642 static void draw_reload(Fl_Color c) {
 643   fl_rotate(-135.0);
 644   draw_round_arrow(c, 10);
 645   fl_rotate(135.0);
 646 }
 647
 648 static void draw_undo(Fl_Color c) {
 649   fl_translate(0.0, 0.2);
 650   fl_scale(1.0, -1.0);
 651   draw_round_arrow(c, 6);
 652   fl_scale(1.0, -1.0);
 653   fl_translate(0.0, -0.2);
 654 }
 655
 656 static void draw_redo(Fl_Color c) {
 657   fl_scale(-1.0, 1.0);
 658   draw_undo(c);
 659   fl_scale(-1.0, 1.0);
 660 }
 661
 662 static void fl_init_symbols(void) {
 663   static char beenhere;
 664   if (beenhere) return;
 665   beenhere = 1;
 666   symbnumb = 0;
 667
 668   fl_add_symbol("",             draw_arrow1,            1);
 669   fl_add_symbol("->",           draw_arrow1,            1);
 670   fl_add_symbol(">",            draw_arrow2,            1);
 671   fl_add_symbol(">>",           draw_arrow3,            1);
 672   fl_add_symbol(">|",           draw_arrowbar,          1);
 673   fl_add_symbol(">[]",          draw_arrowbox,          1);
 674   fl_add_symbol("|>",           draw_bararrow,          1);
 675   fl_add_symbol("<-",           draw_arrow01,           1);
 676   fl_add_symbol("<",            draw_arrow02,           1);
 677   fl_add_symbol("<<",           draw_arrow03,           1);
 678   fl_add_symbol("|<",           draw_0arrowbar,         1);
 679   fl_add_symbol("[]<",          draw_0arrowbox,         1);
 680   fl_add_symbol("<|",           draw_0bararrow,         1);
 681   fl_add_symbol("<->",          draw_doublearrow,       1);
 682   fl_add_symbol("-->",          draw_arrow,             1);
 683   fl_add_symbol("+",            draw_plus,              1);
 684   fl_add_symbol("->|",          draw_arrow1bar,         1);
 685   fl_add_symbol("arrow",        draw_arrow,             1);
 686   fl_add_symbol("returnarrow",  0,                      3);
 687   fl_add_symbol("square",       draw_square,            1);
 688   fl_add_symbol("circle",       draw_circle,            1);
 689   fl_add_symbol("line",         draw_line,              1);
 690   fl_add_symbol("plus",         draw_plus,              1);
 691   fl_add_symbol("menu",         draw_menu,              1);
 692   fl_add_symbol("UpArrow",      draw_uparrow,           1);
 693   fl_add_symbol("DnArrow",      draw_downarrow,         1);
 694   fl_add_symbol("||",           draw_doublebar,         1);
 695   fl_add_symbol("search",       draw_search,            1);
 696   fl_add_symbol("FLTK",         draw_fltk,              1);
 697
 698   fl_add_symbol("filenew",      draw_filenew,           1);
 699   fl_add_symbol("fileopen",     draw_fileopen,          1);
 700   fl_add_symbol("filesave",     draw_filesave,          1);
 701   fl_add_symbol("filesaveas",   draw_filesaveas,        1);
 702   fl_add_symbol("fileprint",    draw_fileprint,         1);
 703
 704   fl_add_symbol("refresh",      draw_refresh,           1);
 705   fl_add_symbol("reload",       draw_reload,            1);
 706   fl_add_symbol("undo",         draw_undo,              1);
 707   fl_add_symbol("redo",         draw_redo,              1);
 708
 709 //  fl_add_symbol("file",      draw_file,           1);
 710 }
 711
 712 //
 713 // End of "$Id: fl_symbols.cxx 7903 2010-11-28 21:06:39Z matt $".
 714 //