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 "layouts/tile.h"
  34 #include "layouts/spiral.h"
  35 #include "layouts/floating.h"
  36
  37 /* static */
  38 static void initfont(const char *, Display *, DC *);
  39 static unsigned long initcolor(const char *colstr, Display *, int);
  40 static unsigned int get_numlockmask(Display *);
  41
  42 /** Main configuration object for parsing*/
  43 config_t awesomelibconf;
  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", tile},
  77     {"tileleft", tileleft},
  78     {"floating", floating},
  79     {"spiral", spiral},
  80     {"dwindle", dwindle},
  81     {NULL, NULL}
  82 };
  83
  84 /** List of available UI bindable callbacks and functions */
  85 static const NameFuncLink KeyfuncList[] = {
  86     /* util.c */
  87     {"spawn", uicb_spawn},
  88     /* client.c */
  89     {"killclient", uicb_killclient},
  90     {"moveresize", uicb_moveresize},
  91     {"settrans", uicb_settrans},
  92     /* tag.c */
  93     {"tag", uicb_tag},
  94     {"togglefloating", uicb_togglefloating},
  95     {"toggleview", uicb_toggleview},
  96     {"toggletag", uicb_toggletag},
  97     {"view", uicb_view},
  98     {"viewprevtags", uicb_viewprevtags},
  99     /* layout.c */
 100     {"setlayout", uicb_setlayout},
 101     {"togglebar", uicb_togglebar},
 102     {"focusnext", uicb_focusnext},
 103     {"focusprev", uicb_focusprev},
 104     {"togglemax", uicb_togglemax},
 105     {"toggleverticalmax", uicb_toggleverticalmax},
 106     {"togglehorizontalmax", uicb_togglehorizontalmax},
 107     {"zoom", uicb_zoom},
 108     /* layouts/tile.c */
 109     {"setmwfact", uicb_setmwfact},
 110     {"setnmaster", uicb_setnmaster},
 111     {"setncols", uicb_setncols},
 112     /* awesome.c */
 113     {"quit", uicb_quit},
 114     {NULL, NULL}
 115 };
 116
 117 /** Lookup for a key mask from its name
 118  * \param keyname Key name
 119  * \return Key mask or 0 if not found
 120  */
 121 static KeySym
 122 key_mask_lookup(const char *keyname)
 123 {
 124     int i;
 125
 126     if(keyname)
 127         for(i = 0; KeyModList[i].name; i++)
 128             if(!strcmp(keyname, KeyModList[i].name))
 129                 return KeyModList[i].keysym;
 130
 131     return 0;
 132 }
 133
 134 /** Lookup for a function pointer from its name
 135  * in the given NameFuncLink list
 136  * \param funcname Function name
 137  * \param list Function and name link list
 138  * \return function pointer
 139  */
 140 static void *
 141 name_func_lookup(const char *funcname, const NameFuncLink * list)
 142 {
 143     int i;
 144
 145     if(funcname && list)
 146         for(i = 0; list[i].name; i++)
 147             if(!strcmp(funcname, list[i].name))
 148                 return list[i].func;
 149
 150     return NULL;
 151 }
 152
 153 /** Set default configuration
 154  * \param awesomeconf awesome config ref
 155  */
 156 static void
 157 set_default_config(awesome_config *awesomeconf)
 158 {
 159     strcpy(awesomeconf->statustext, "awesome-" VERSION);
 160     awesomeconf->statusbar.width = 0;
 161     awesomeconf->statusbar.height = 0;
 162     awesomeconf->opacity_unfocused = -1;
 163     awesomeconf->nkeys = 0;
 164     awesomeconf->nrules = 0;
 165 }
 166
 167 /** Parse configuration file and initialize some stuff
 168  * \param disp Display ref
 169  * \param scr Screen number
 170  * \param drawcontext Draw context
 171  */
 172 void
 173 parse_config(Display * disp, int scr, DC * drawcontext, awesome_config *awesomeconf)
 174 {
 175     config_setting_t *conftags;
 176     config_setting_t *conflayouts, *confsublayouts;
 177     config_setting_t *confrules, *confsubrules;
 178     config_setting_t *confkeys, *confsubkeys, *confkeysmasks, *confkeymaskelem;
 179     int i = 0, j = 0;
 180     double f = 0.0;
 181     const char *tmp, *homedir;
 182     char *confpath;
 183     KeySym tmp_key;
 184
 185     set_default_config(awesomeconf);
 186
 187     homedir = getenv("HOME");
 188     confpath = p_new(char, strlen(homedir) + strlen(AWESOME_CONFIG_FILE) + 2);
 189     strcpy(confpath, homedir);
 190     strcat(confpath, "/");
 191     strcat(confpath, AWESOME_CONFIG_FILE);
 192
 193     config_init(&awesomelibconf);
 194
 195     if(config_read_file(&awesomelibconf, confpath) == CONFIG_FALSE)
 196         eprint("awesome: error parsing configuration file at line %d: %s\n",
 197                config_error_line(&awesomelibconf), config_error_text(&awesomelibconf));
 198
 199     /* font */
 200     tmp = config_lookup_string(&awesomelibconf, "awesome.font");
 201     initfont(tmp ? tmp : "-*-fixed-medium-r-normal-*-13-*-*-*-*-*-*-*", disp, drawcontext);
 202
 203     /* layouts */
 204     conflayouts = config_lookup(&awesomelibconf, "awesome.layouts");
 205
 206     if(!conflayouts)
 207         fprintf(stderr, "layouts not found in configuration file\n");
 208     else
 209     {
 210         awesomeconf->nlayouts = config_setting_length(conflayouts);
 211         awesomeconf->layouts = p_new(Layout, awesomeconf->nlayouts + 1);
 212         for(i = 0; (confsublayouts = config_setting_get_elem(conflayouts, i)); i++)
 213         {
 214             awesomeconf->layouts[i].arrange =
 215                 name_func_lookup(config_setting_get_string_elem(confsublayouts, 1), LayoutsList);
 216             if(!awesomeconf->layouts[i].arrange)
 217             {
 218                 fprintf(stderr, "awesome: unknown layout #%d in configuration file\n", i);
 219                 awesomeconf->layouts[i].symbol = NULL;
 220                 continue;
 221             }
 222             awesomeconf->layouts[i].symbol = config_setting_get_string_elem(confsublayouts, 0);
 223
 224             j = textw(drawcontext->font.set, drawcontext->font.xfont, awesomeconf->layouts[i].symbol, drawcontext->font.height);
 225             if(j > awesomeconf->statusbar.width)
 226                 awesomeconf->statusbar.width = j;
 227         }
 228         awesomeconf->layouts[i].symbol = NULL;
 229         awesomeconf->layouts[i].arrange = NULL;
 230     }
 231
 232
 233     if(!awesomeconf->layouts[0].arrange)
 234         eprint("awesome: fatal: no default layout available\n");
 235     /** \todo put this in set_default_layout */
 236     awesomeconf->current_layout = awesomeconf->layouts;
 237
 238     /* tags */
 239     conftags = config_lookup(&awesomelibconf, "awesome.tags");
 240
 241     if(!conftags)
 242         eprint("awesome: fatal: no tags found in configuration file\n");
 243     awesomeconf->ntags = config_setting_length(conftags);
 244     awesomeconf->tags = p_new(const char *, awesomeconf->ntags);
 245     awesomeconf->selected_tags = p_new(Bool, awesomeconf->ntags);
 246     awesomeconf->prev_selected_tags = p_new(Bool, awesomeconf->ntags);
 247     awesomeconf->tag_layouts = p_new(Layout *, awesomeconf->ntags);
 248
 249     for(i = 0; (tmp = config_setting_get_string_elem(conftags, i)); i++)
 250     {
 251         awesomeconf->tags[i] = tmp;
 252         awesomeconf->selected_tags[i] = False;
 253         awesomeconf->prev_selected_tags[i] = False;
 254         /** \todo add support for default tag/layout in configuration file */
 255         awesomeconf->tag_layouts[i] = awesomeconf->layouts;
 256     }
 257
 258     /* select first tag by default */
 259     awesomeconf->selected_tags[0] = True;
 260     awesomeconf->prev_selected_tags[0] = True;
 261
 262     /* rules */
 263     confrules = config_lookup(&awesomelibconf, "awesome.rules");
 264
 265     if(!confrules)
 266         fprintf(stderr, "awesome: no rules found in configuration file\n");
 267     else
 268     {
 269         awesomeconf->nrules = config_setting_length(confrules);
 270         awesomeconf->rules = p_new(Rule, awesomeconf->nrules);
 271         for(i = 0; (confsubrules = config_setting_get_elem(confrules, i)); i++)
 272         {
 273             awesomeconf->rules[i].prop = config_setting_get_string(config_setting_get_member(confsubrules, "name"));
 274             awesomeconf->rules[i].tags = config_setting_get_string(config_setting_get_member(confsubrules, "tags"));
 275             if(awesomeconf->rules[i].tags && !strlen(awesomeconf->rules[i].tags))
 276                 awesomeconf->rules[i].tags = NULL;
 277             awesomeconf->rules[i].isfloating =
 278                 config_setting_get_bool(config_setting_get_member(confsubrules, "float"));
 279         }
 280     }
 281
 282     /* modkey */
 283     tmp_key = key_mask_lookup(config_lookup_string(&awesomelibconf, "awesome.modkey"));
 284     awesomeconf->modkey = tmp_key ? tmp_key : Mod1Mask;
 285
 286     /* find numlock mask */
 287     awesomeconf->numlockmask = get_numlockmask(disp);
 288
 289     /* keys */
 290     confkeys = config_lookup(&awesomelibconf, "awesome.keys");
 291
 292     if(!confkeys)
 293         fprintf(stderr, "awesome: no keys found in configuration file\n");
 294     else
 295     {
 296         awesomeconf->nkeys = config_setting_length(confkeys);
 297         awesomeconf->keys = p_new(Key, awesomeconf->nkeys);
 298
 299         for(i = 0; (confsubkeys = config_setting_get_elem(confkeys, i)); i++)
 300         {
 301             confkeysmasks = config_setting_get_elem(confsubkeys, 0);
 302             for(j = 0; (confkeymaskelem = config_setting_get_elem(confkeysmasks, j)); j++)
 303                 awesomeconf->keys[i].mod |= key_mask_lookup(config_setting_get_string(confkeymaskelem));
 304             awesomeconf->keys[i].keysym = XStringToKeysym(config_setting_get_string_elem(confsubkeys, 1));
 305             awesomeconf->keys[i].func =
 306                 name_func_lookup(config_setting_get_string_elem(confsubkeys, 2), KeyfuncList);
 307             awesomeconf->keys[i].arg = config_setting_get_string_elem(confsubkeys, 3);
 308         }
 309     }
 310
 311     /* barpos */
 312     tmp = config_lookup_string(&awesomelibconf, "awesome.barpos");
 313
 314     if(tmp && !strncmp(tmp, "BarOff", 6))
 315         awesomeconf->statusbar_default_position = BarOff;
 316     else if(tmp && !strncmp(tmp, "BarBot", 6))
 317         awesomeconf->statusbar_default_position = BarBot;
 318     else
 319         awesomeconf->statusbar_default_position = BarTop;
 320
 321     awesomeconf->statusbar.position = awesomeconf->statusbar_default_position;
 322
 323     /* borderpx */
 324     awesomeconf->borderpx = config_lookup_int(&awesomelibconf, "awesome.borderpx");
 325
 326     /* opacity */
 327     awesomeconf->opacity_unfocused = config_lookup_int(&awesomelibconf, "awesome.opacity_unfocused");
 328     if(awesomeconf->opacity_unfocused >= 100)
 329         awesomeconf->opacity_unfocused = -1;
 330
 331     /* snap */
 332     i = config_lookup_int(&awesomelibconf, "awesome.snap");
 333     awesomeconf->snap = i ? i : 8;
 334
 335     /* nmaster */
 336     i = config_lookup_int(&awesomelibconf, "awesome.nmaster");
 337     awesomeconf->nmaster = i ? i : 1;
 338
 339     /* ncols */
 340     i = config_lookup_int(&awesomelibconf, "awesome.ncols");
 341     awesomeconf->ncols = i ? i : 1;
 342
 343     /* mwfact */
 344     f = config_lookup_float(&awesomelibconf, "awesome.mwfact");
 345     awesomeconf->mwfact = f ? f : 0.6;
 346
 347     /* resize_hints */
 348     awesomeconf->resize_hints = config_lookup_float(&awesomelibconf, "awesome.resize_hints");
 349
 350     /* colors */
 351     tmp = config_lookup_string(&awesomelibconf, "awesome.normal_border_color");
 352     drawcontext->norm[ColBorder] = initcolor(tmp ? tmp : "#dddddd", disp, scr);
 353
 354     tmp = config_lookup_string(&awesomelibconf, "awesome.normal_bg_color");
 355     drawcontext->norm[ColBG] = initcolor(tmp ? tmp : "#000000", disp, scr);
 356
 357     tmp = config_lookup_string(&awesomelibconf, "awesome.normal_fg_color");
 358     drawcontext->norm[ColFG] = initcolor(tmp ? tmp : "#ffffff", disp, scr);
 359
 360     tmp = config_lookup_string(&awesomelibconf, "awesome.focus_border_color");
 361     drawcontext->sel[ColBorder] = initcolor(tmp ? tmp : "#008b8b", disp, scr);
 362
 363     tmp = config_lookup_string(&awesomelibconf, "awesome.focus_bg_color");
 364     drawcontext->sel[ColBG] = initcolor(tmp ? tmp : "#008b8b", disp, scr);
 365
 366     tmp = config_lookup_string(&awesomelibconf, "awesome.focus_fg_color");
 367     drawcontext->sel[ColFG] = initcolor(tmp ? tmp : "#ffffff", disp, scr);
 368
 369     p_delete(&confpath);
 370 }
 371
 372 /** Initialize font from X side and store in draw context
 373  * \param fontstr Font name
 374  * \param disp Display ref
 375  * \param drawcontext Draw context
 376  */
 377 static void
 378 initfont(const char *fontstr, Display * disp, DC * drawcontext)
 379 {
 380     char *def, **missing;
 381     int i, n;
 382
 383     missing = NULL;
 384     if(drawcontext->font.set)
 385         XFreeFontSet(disp, drawcontext->font.set);
 386     drawcontext->font.set = XCreateFontSet(disp, fontstr, &missing, &n, &def);
 387     if(missing)
 388     {
 389         while(n--)
 390             fprintf(stderr, "awesome: missing fontset: %s\n", missing[n]);
 391         XFreeStringList(missing);
 392     }
 393     if(drawcontext->font.set)
 394     {
 395         XFontSetExtents *font_extents;
 396         XFontStruct **xfonts;
 397         char **font_names;
 398         drawcontext->font.ascent = drawcontext->font.descent = 0;
 399         font_extents = XExtentsOfFontSet(drawcontext->font.set);
 400         n = XFontsOfFontSet(drawcontext->font.set, &xfonts, &font_names);
 401         for(i = 0, drawcontext->font.ascent = 0, drawcontext->font.descent = 0; i < n; i++)
 402         {
 403             if(drawcontext->font.ascent < (*xfonts)->ascent)
 404                 drawcontext->font.ascent = (*xfonts)->ascent;
 405             if(drawcontext->font.descent < (*xfonts)->descent)
 406                 drawcontext->font.descent = (*xfonts)->descent;
 407             xfonts++;
 408         }
 409     }
 410     else
 411     {
 412         if(drawcontext->font.xfont)
 413             XFreeFont(disp, drawcontext->font.xfont);
 414         drawcontext->font.xfont = NULL;
 415         if(!(drawcontext->font.xfont = XLoadQueryFont(disp, fontstr)))
 416             eprint("error, cannot load font: '%s'\n", fontstr);
 417         drawcontext->font.ascent = drawcontext->font.xfont->ascent;
 418         drawcontext->font.descent = drawcontext->font.xfont->descent;
 419     }
 420     drawcontext->font.height = drawcontext->font.ascent + drawcontext->font.descent;
 421 }
 422
 423 static unsigned int
 424 get_numlockmask(Display *disp)
 425 {
 426     XModifierKeymap *modmap;
 427     unsigned int mask = 0;
 428     int i, j;
 429
 430     modmap = XGetModifierMapping(disp);
 431     for(i = 0; i < 8; i++)
 432         for(j = 0; j < modmap->max_keypermod; j++)
 433         {
 434             if(modmap->modifiermap[i * modmap->max_keypermod + j]
 435                == XKeysymToKeycode(disp, XK_Num_Lock))
 436                 mask = (1 << i);
 437         }
 438
 439     XFreeModifiermap(modmap);
 440
 441     return mask;
 442 }
 443
 444 /** Initialize color from X side
 445  * \param colorstr Color code
 446  * \param disp Display ref
 447  * \param scr Screen number
 448  * \return XColor pixel
 449  */
 450 static unsigned long
 451 initcolor(const char *colstr, Display * disp, int scr)
 452 {
 453     Colormap cmap = DefaultColormap(disp, scr);
 454     XColor color;
 455     if(!XAllocNamedColor(disp, cmap, colstr, &color, &color))
 456         eprint("error, cannot allocate color '%s'\n", colstr);
 457     return color.pixel;
 458 }