config.c

   1 /*
   2  * config.c - configuration management
   3  *
   4  * Copyright © 2007 Julien Danjou <julien@danjou.info>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  */
  21
  22
  23 /**
  24  * \defgroup ui_callback
  25  */
  26
  27 #include <libconfig.h>
  28 #include <X11/keysym.h>
  29
  30 #include "awesome.h"
  31 #include "layout.h"
  32 #include "tag.h"
  33 #include "draw.h"
  34 #include "util.h"
  35 #include "statusbar.h"
  36 #include "screen.h"
  37 #include "layouts/tile.h"
  38 #include "layouts/max.h"
  39 #include "layouts/floating.h"
  40
  41 static void initfont(Display *, DC *, const char *);
  42 static unsigned long initcolor(Display *, int, const char *);
  43 static unsigned int get_numlockmask(Display *);
  44
  45 /** Link a name to a function */
  46 typedef struct
  47 {
  48     const char *name;
  49     void *func;
  50 } NameFuncLink;
  51
  52 /** Link a name to a key symbol */
  53 typedef struct
  54 {
  55     const char *name;
  56     KeySym keysym;
  57 } KeyMod;
  58
  59 /** List of keyname and corresponding X11 mask codes */
  60 static const KeyMod KeyModList[] =
  61 {
  62     {"Shift", ShiftMask},
  63     {"Lock", LockMask},
  64     {"Control", ControlMask},
  65     {"Mod1", Mod1Mask},
  66     {"Mod2", Mod2Mask},
  67     {"Mod3", Mod3Mask},
  68     {"Mod4", Mod4Mask},
  69     {"Mod5", Mod5Mask},
  70     {"None", 0}
  71 };
  72
  73 /** List of available layouts and link between name and functions */
  74 static const NameFuncLink LayoutsList[] =
  75 {
  76     {"tile", layout_tile},
  77     {"tileleft", layout_tileleft},
  78     {"max", layout_max},
  79     {"floating", layout_floating},
  80     {NULL, NULL}
  81 };
  82
  83 /** List of available UI bindable callbacks and functions */
  84 static const NameFuncLink KeyfuncList[] = {
  85     /* util.c */
  86     {"spawn", uicb_spawn},
  87     /* client.c */
  88     {"killclient", uicb_killclient},
  89     {"moveresize", uicb_moveresize},
  90     {"settrans", uicb_settrans},
  91     {"setborder", uicb_setborder},
  92     {"swapnext", uicb_swapnext},
  93     {"swapprev", uicb_swapprev},
  94     /* tag.c */
  95     {"tag", uicb_tag},
  96     {"togglefloating", uicb_togglefloating},
  97     {"toggleview", uicb_toggleview},
  98     {"toggletag", uicb_toggletag},
  99     {"view", uicb_view},
 100     {"view_tag_prev_selected", uicb_tag_prev_selected},
 101     {"view_tag_previous", uicb_tag_viewprev},
 102     {"view_tag_next", uicb_tag_viewnext},
 103     /* layout.c */
 104     {"setlayout", uicb_setlayout},
 105     {"focusnext", uicb_focusnext},
 106     {"focusprev", uicb_focusprev},
 107     {"togglemax", uicb_togglemax},
 108     {"toggleverticalmax", uicb_toggleverticalmax},
 109     {"togglehorizontalmax", uicb_togglehorizontalmax},
 110     {"zoom", uicb_zoom},
 111     /* layouts/tile.c */
 112     {"setmwfact", uicb_setmwfact},
 113     {"setnmaster", uicb_setnmaster},
 114     {"setncols", uicb_setncols},
 115     /* screen.c */
 116     {"focusnextscreen", uicb_focusnextscreen},
 117     {"focusprevscreen", uicb_focusprevscreen},
 118     /* awesome.c */
 119     {"quit", uicb_quit},
 120     /* statusbar.c */
 121     {"togglebar", uicb_togglebar},
 122     {NULL, NULL}
 123 };
 124
 125 /** Lookup for a key mask from its name
 126  * \param keyname Key name
 127  * \return Key mask or 0 if not found
 128  */
 129 static KeySym
 130 key_mask_lookup(const char *keyname)
 131 {
 132     int i;
 133
 134     if(keyname)
 135         for(i = 0; KeyModList[i].name; i++)
 136             if(!a_strcmp(keyname, KeyModList[i].name))
 137                 return KeyModList[i].keysym;
 138
 139     return 0;
 140 }
 141
 142 /** Lookup for a function pointer from its name
 143  * in the given NameFuncLink list
 144  * \param funcname Function name
 145  * \param list Function and name link list
 146  * \return function pointer
 147  */
 148 static void *
 149 name_func_lookup(const char *funcname, const NameFuncLink * list)
 150 {
 151     int i;
 152
 153     if(funcname && list)
 154         for(i = 0; list[i].name; i++)
 155             if(!a_strcmp(funcname, list[i].name))
 156                 return list[i].func;
 157
 158     return NULL;
 159 }
 160
 161 /** Parse configuration file and initialize some stuff
 162  * \param disp Display ref
 163  * \param scr Screen number
 164  * \param drawcontext Draw context
 165  */
 166 void
 167 parse_config(Display * disp, int scr, DC * drawcontext, const char *confpatharg, awesome_config *awesomeconf)
 168 {
 169     /* Main configuration object for parsing*/
 170     config_t awesomelibconf;
 171     config_setting_t *conftags;
 172     config_setting_t *conflayouts, *confsublayouts;
 173     config_setting_t *confrules, *confsubrules;
 174     config_setting_t *confkeys, *confsubkeys, *confkeysmasks, *confkeymaskelem;
 175     int i = 0, j = 0;
 176     double f = 0.0;
 177     const char *tmp, *homedir;
 178     char *confpath;
 179     KeySym tmp_key;
 180     ssize_t confpath_len;
 181
 182     if(confpatharg)
 183         confpath = a_strdup(confpatharg);
 184     else
 185     {
 186         homedir = getenv("HOME");
 187         confpath_len = a_strlen(homedir) + a_strlen(AWESOME_CONFIG_FILE) + 2;
 188         confpath = p_new(char, confpath_len);
 189         a_strcpy(confpath, confpath_len, homedir);
 190         a_strcat(confpath, confpath_len, "/");
 191         a_strcat(confpath, confpath_len, AWESOME_CONFIG_FILE);
 192     }
 193
 194     config_init(&awesomelibconf);
 195
 196     a_strcpy(awesomeconf->statustext, sizeof(awesomeconf->statustext), "awesome-" VERSION);
 197
 198     /* set screen */
 199     awesomeconf->screen = scr;
 200
 201     if(config_read_file(&awesomelibconf, confpath) == CONFIG_FALSE)
 202         fprintf(stderr, "awesome: error parsing configuration file at line %d: %s\n",
 203                config_error_line(&awesomelibconf), config_error_text(&awesomelibconf));
 204
 205
 206     /* font */
 207     tmp = config_lookup_string(&awesomelibconf, "awesome.font");
 208     initfont(disp, drawcontext, tmp ? tmp : "-*-fixed-medium-r-normal-*-13-*-*-*-*-*-*-*");
 209
 210     /* layouts */
 211     conflayouts = config_lookup(&awesomelibconf, "awesome.layouts");
 212
 213     if(!conflayouts)
 214     {
 215         fprintf(stderr, "awesome: layouts not found in configuration file, setting default\n");
 216         awesomeconf->nlayouts = 2;
 217         awesomeconf->layouts = p_new(Layout, awesomeconf->nlayouts + 1);
 218         awesomeconf->layouts[0].symbol = a_strdup("[]=");
 219         awesomeconf->layouts[0].arrange = layout_tile;
 220         awesomeconf->layouts[1].symbol = a_strdup("<><");
 221         awesomeconf->layouts[1].arrange = layout_floating;
 222         awesomeconf->layouts[2].symbol = NULL;
 223         awesomeconf->layouts[2].arrange = NULL;
 224     }
 225     else
 226     {
 227         awesomeconf->nlayouts = config_setting_length(conflayouts);
 228         awesomeconf->layouts = p_new(Layout, awesomeconf->nlayouts + 1);
 229         for(i = 0; (confsublayouts = config_setting_get_elem(conflayouts, i)); i++)
 230         {
 231             awesomeconf->layouts[i].arrange =
 232                 name_func_lookup(config_setting_get_string_elem(confsublayouts, 1), LayoutsList);
 233             if(!awesomeconf->layouts[i].arrange)
 234             {
 235                 fprintf(stderr, "awesome: unknown layout #%d in configuration file\n", i);
 236                 awesomeconf->layouts[i].symbol = NULL;
 237                 continue;
 238             }
 239             awesomeconf->layouts[i].symbol = a_strdup(config_setting_get_string_elem(confsublayouts, 0));
 240         }
 241         awesomeconf->layouts[i].symbol = NULL;
 242         awesomeconf->layouts[i].arrange = NULL;
 243     }
 244
 245     if(!awesomeconf->nlayouts)
 246         eprint("awesome: fatal: no default layout available\n");
 247
 248     for(i = 0; i < awesomeconf->nlayouts; i++)
 249     {
 250         j = textw(drawcontext->font.set, drawcontext->font.xfont, awesomeconf->layouts[i].symbol, drawcontext->font.height);
 251         if(j > awesomeconf->statusbar.width)
 252             awesomeconf->statusbar.width = j;
 253     }
 254
 255     awesomeconf->current_layout = awesomeconf->layouts;
 256
 257     /* tags */
 258     conftags = config_lookup(&awesomelibconf, "awesome.tags");
 259
 260     if(!conftags)
 261     {
 262         fprintf(stderr, "awesome: tags not found in configuration file, setting default\n");
 263         awesomeconf->ntags = 3;
 264         awesomeconf->tags = p_new(Tag, awesomeconf->ntags);
 265         awesomeconf->tags[0].name = a_strdup("this");
 266         awesomeconf->tags[1].name = a_strdup("is");
 267         awesomeconf->tags[2].name = a_strdup("awesome");
 268         awesomeconf->tags[0].selected = True;
 269         awesomeconf->tags[1].selected = False;
 270         awesomeconf->tags[2].selected = False;
 271         awesomeconf->tags[0].was_selected = False;
 272         awesomeconf->tags[1].was_selected = False;
 273         awesomeconf->tags[2].was_selected = False;
 274         awesomeconf->tags[0].layout = awesomeconf->layouts;
 275         awesomeconf->tags[1].layout = awesomeconf->layouts;
 276         awesomeconf->tags[2].layout = awesomeconf->layouts;
 277     }
 278     else
 279     {
 280         awesomeconf->ntags = config_setting_length(conftags);
 281         awesomeconf->tags = p_new(Tag, awesomeconf->ntags);
 282
 283         for(i = 0; (tmp = config_setting_get_string_elem(conftags, i)); i++)
 284         {
 285             awesomeconf->tags[i].name = a_strdup(tmp);
 286             awesomeconf->tags[i].selected = False;
 287             awesomeconf->tags[i].was_selected = False;
 288             /** \todo add support for default tag/layout in configuration file */
 289             awesomeconf->tags[i].layout = awesomeconf->layouts;
 290         }
 291     }
 292
 293     if(!awesomeconf->ntags)
 294         eprint("awesome: fatal: no tags found in configuration file\n");
 295
 296     /* select first tag by default */
 297     awesomeconf->tags[0].selected = True;
 298     awesomeconf->tags[0].was_selected = True;
 299
 300     /* rules */
 301     confrules = config_lookup(&awesomelibconf, "awesome.rules");
 302
 303     if(!confrules)
 304     {
 305         awesomeconf->nrules = 0;
 306         fprintf(stderr, "awesome: no rules found in configuration file\n");
 307     }
 308     else
 309     {
 310         awesomeconf->nrules = config_setting_length(confrules);
 311         awesomeconf->rules = p_new(Rule, awesomeconf->nrules);
 312         for(i = 0; (confsubrules = config_setting_get_elem(confrules, i)); i++)
 313         {
 314             awesomeconf->rules[i].prop = a_strdup(config_setting_get_string(config_setting_get_member(confsubrules, "name")));
 315             awesomeconf->rules[i].tags = a_strdup(config_setting_get_string(config_setting_get_member(confsubrules, "tags")));
 316             if(awesomeconf->rules[i].tags && !a_strlen(awesomeconf->rules[i].tags))
 317                 awesomeconf->rules[i].tags = NULL;
 318             awesomeconf->rules[i].isfloating =
 319                 config_setting_get_bool(config_setting_get_member(confsubrules, "float"));
 320         }
 321     }
 322
 323     /* modkey */
 324     tmp_key = key_mask_lookup(config_lookup_string(&awesomelibconf, "awesome.modkey"));
 325     awesomeconf->modkey = tmp_key ? tmp_key : Mod1Mask;
 326
 327     /* find numlock mask */
 328     awesomeconf->numlockmask = get_numlockmask(disp);
 329
 330     /* keys */
 331     confkeys = config_lookup(&awesomelibconf, "awesome.keys");
 332
 333     if(!confkeys)
 334     {
 335         awesomeconf->nkeys = 0;
 336         fprintf(stderr, "awesome: no keys found in configuration file\n");
 337     }
 338     else
 339     {
 340         awesomeconf->nkeys = config_setting_length(confkeys);
 341         awesomeconf->keys = p_new(Key, awesomeconf->nkeys);
 342
 343         for(i = 0; (confsubkeys = config_setting_get_elem(confkeys, i)); i++)
 344         {
 345             confkeysmasks = config_setting_get_elem(confsubkeys, 0);
 346             for(j = 0; (confkeymaskelem = config_setting_get_elem(confkeysmasks, j)); j++)
 347                 awesomeconf->keys[i].mod |= key_mask_lookup(config_setting_get_string(confkeymaskelem));
 348             awesomeconf->keys[i].keysym = XStringToKeysym(config_setting_get_string_elem(confsubkeys, 1));
 349             awesomeconf->keys[i].func =
 350                 name_func_lookup(config_setting_get_string_elem(confsubkeys, 2), KeyfuncList);
 351             awesomeconf->keys[i].arg = a_strdup(config_setting_get_string_elem(confsubkeys, 3));
 352         }
 353     }
 354
 355     /* barpos */
 356     tmp = config_lookup_string(&awesomelibconf, "awesome.barpos");
 357
 358     if(tmp && !a_strncmp(tmp, "off", 6))
 359         awesomeconf->statusbar_default_position = BarOff;
 360     else if(tmp && !a_strncmp(tmp, "bottom", 6))
 361         awesomeconf->statusbar_default_position = BarBot;
 362     else
 363         awesomeconf->statusbar_default_position = BarTop;
 364
 365     awesomeconf->statusbar.position = awesomeconf->statusbar_default_position;
 366
 367     /* borderpx */
 368     awesomeconf->borderpx = config_lookup_int(&awesomelibconf, "awesome.borderpx");
 369
 370     /* opacity */
 371     awesomeconf->opacity_unfocused = config_lookup_int(&awesomelibconf, "awesome.opacity_unfocused");
 372     if(awesomeconf->opacity_unfocused >= 100 || awesomeconf->opacity_unfocused == 0)
 373         awesomeconf->opacity_unfocused = -1;
 374
 375     /* snap */
 376     i = config_lookup_int(&awesomelibconf, "awesome.snap");
 377     awesomeconf->snap = i ? i : 8;
 378
 379     /* nmaster */
 380     i = config_lookup_int(&awesomelibconf, "awesome.nmaster");
 381     awesomeconf->nmaster = i ? i : 1;
 382
 383     /* ncols */
 384     i = config_lookup_int(&awesomelibconf, "awesome.ncols");
 385     awesomeconf->ncols = i ? i : 1;
 386
 387     /* mwfact */
 388     f = config_lookup_float(&awesomelibconf, "awesome.mwfact");
 389     awesomeconf->mwfact = f ? f : 0.6;
 390
 391     /* resize_hints */
 392     awesomeconf->resize_hints = config_lookup_float(&awesomelibconf, "awesome.resize_hints");
 393
 394     /* colors */
 395     tmp = config_lookup_string(&awesomelibconf, "awesome.normal_border_color");
 396     drawcontext->norm[ColBorder] = initcolor(disp, scr, tmp ? tmp : "#dddddd");
 397
 398     tmp = config_lookup_string(&awesomelibconf, "awesome.normal_bg_color");
 399     drawcontext->norm[ColBG] = initcolor(disp, scr, tmp ? tmp : "#000000");
 400
 401     tmp = config_lookup_string(&awesomelibconf, "awesome.normal_fg_color");
 402     drawcontext->norm[ColFG] = initcolor(disp, scr, tmp ? tmp : "#ffffff");
 403
 404     tmp = config_lookup_string(&awesomelibconf, "awesome.focus_border_color");
 405     drawcontext->sel[ColBorder] = initcolor(disp, scr, tmp ? tmp : "#008b8b");
 406
 407     tmp = config_lookup_string(&awesomelibconf, "awesome.focus_bg_color");
 408     drawcontext->sel[ColBG] = initcolor(disp, scr, tmp ? tmp : "#008b8b");
 409
 410     tmp = config_lookup_string(&awesomelibconf, "awesome.focus_fg_color");
 411     drawcontext->sel[ColFG] = initcolor(disp, scr, tmp ? tmp : "#ffffff");
 412
 413     config_destroy(&awesomelibconf);
 414     p_delete(&confpath);
 415 }
 416
 417 /** Initialize font from X side and store in draw context
 418  * \param fontstr Font name
 419  * \param disp Display ref
 420  * \param drawcontext Draw context
 421  */
 422 static void
 423 initfont(Display *disp, DC *drawcontext, const char *fontstr)
 424 {
 425     char *def, **missing;
 426     int i, n;
 427
 428     missing = NULL;
 429     if(drawcontext->font.set)
 430         XFreeFontSet(disp, drawcontext->font.set);
 431     drawcontext->font.set = XCreateFontSet(disp, fontstr, &missing, &n, &def);
 432     if(missing)
 433     {
 434         while(n--)
 435             fprintf(stderr, "awesome: missing fontset: %s\n", missing[n]);
 436         XFreeStringList(missing);
 437     }
 438     if(drawcontext->font.set)
 439     {
 440         XFontSetExtents *font_extents;
 441         XFontStruct **xfonts;
 442         char **font_names;
 443         drawcontext->font.ascent = drawcontext->font.descent = 0;
 444         font_extents = XExtentsOfFontSet(drawcontext->font.set);
 445         n = XFontsOfFontSet(drawcontext->font.set, &xfonts, &font_names);
 446         for(i = 0, drawcontext->font.ascent = 0, drawcontext->font.descent = 0; i < n; i++)
 447         {
 448             if(drawcontext->font.ascent < (*xfonts)->ascent)
 449                 drawcontext->font.ascent = (*xfonts)->ascent;
 450             if(drawcontext->font.descent < (*xfonts)->descent)
 451                 drawcontext->font.descent = (*xfonts)->descent;
 452             xfonts++;
 453         }
 454     }
 455     else
 456     {
 457         if(drawcontext->font.xfont)
 458             XFreeFont(disp, drawcontext->font.xfont);
 459         drawcontext->font.xfont = NULL;
 460         if(!(drawcontext->font.xfont = XLoadQueryFont(disp, fontstr))
 461            && !(drawcontext->font.xfont = XLoadQueryFont(disp, "fixed")))
 462             die("awesome: error, cannot load font: '%s'\n", fontstr);
 463         drawcontext->font.ascent = drawcontext->font.xfont->ascent;
 464         drawcontext->font.descent = drawcontext->font.xfont->descent;
 465     }
 466     drawcontext->font.height = drawcontext->font.ascent + drawcontext->font.descent;
 467 }
 468
 469 static unsigned int
 470 get_numlockmask(Display *disp)
 471 {
 472     XModifierKeymap *modmap;
 473     unsigned int mask = 0;
 474     int i, j;
 475
 476     modmap = XGetModifierMapping(disp);
 477     for(i = 0; i < 8; i++)
 478         for(j = 0; j < modmap->max_keypermod; j++)
 479         {
 480             if(modmap->modifiermap[i * modmap->max_keypermod + j]
 481                == XKeysymToKeycode(disp, XK_Num_Lock))
 482                 mask = (1 << i);
 483         }
 484
 485     XFreeModifiermap(modmap);
 486
 487     return mask;
 488 }
 489
 490 /** Initialize color from X side
 491  * \param colorstr Color code
 492  * \param disp Display ref
 493  * \param scr Screen number
 494  * \return XColor pixel
 495  */
 496 static unsigned long
 497 initcolor(Display *disp, int scr, const char *colstr)
 498 {
 499     Colormap cmap;
 500     /* bypass screen if scr is a Xinerama screen number */
 501     if(XineramaIsActive(disp))
 502         cmap = DefaultColormap(disp, DefaultScreen(disp));
 503     else
 504         cmap = DefaultColormap(disp, scr);
 505     XColor color;
 506     if(!XAllocNamedColor(disp, cmap, colstr, &color, &color))
 507         die("awesome: error, cannot allocate color '%s'\n", colstr);
 508     return color.pixel;
 509 }