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 "layouts/tile.h"
  37 #include "layouts/spiral.h"
  38 #include "layouts/floating.h"
  39
  40 static void initfont(const char *, Display *, DC *);
  41 static unsigned long initcolor(const char *, Display *, int);
  42 static unsigned int get_numlockmask(Display *);
  43
  44 /** Link a name to a function */
  45 typedef struct
  46 {
  47     const char *name;
  48     void *func;
  49 } NameFuncLink;
  50
  51 /** Link a name to a key symbol */
  52 typedef struct
  53 {
  54     const char *name;
  55     KeySym keysym;
  56 } KeyMod;
  57
  58 /** List of keyname and corresponding X11 mask codes */
  59 static const KeyMod KeyModList[] =
  60 {
  61     {"Shift", ShiftMask},
  62     {"Lock", LockMask},
  63     {"Control", ControlMask},
  64     {"Mod1", Mod1Mask},
  65     {"Mod2", Mod2Mask},
  66     {"Mod3", Mod3Mask},
  67     {"Mod4", Mod4Mask},
  68     {"Mod5", Mod5Mask},
  69     {"None", 0}
  70 };
  71
  72 /** List of available layouts and link between name and functions */
  73 static const NameFuncLink LayoutsList[] =
  74 {
  75     {"tile", tile},
  76     {"tileleft", tileleft},
  77     {"floating", floating},
  78     {"spiral", spiral},
  79     {"dwindle", dwindle},
  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     /* tag.c */
  92     {"tag", uicb_tag},
  93     {"togglefloating", uicb_togglefloating},
  94     {"toggleview", uicb_toggleview},
  95     {"toggletag", uicb_toggletag},
  96     {"view", uicb_view},
  97     {"viewprevtags", uicb_viewprevtags},
  98     /* layout.c */
  99     {"setlayout", uicb_setlayout},
 100     {"focusnext", uicb_focusnext},
 101     {"focusprev", uicb_focusprev},
 102     {"togglemax", uicb_togglemax},
 103     {"toggleverticalmax", uicb_toggleverticalmax},
 104     {"togglehorizontalmax", uicb_togglehorizontalmax},
 105     {"zoom", uicb_zoom},
 106     /* layouts/tile.c */
 107     {"setmwfact", uicb_setmwfact},
 108     {"setnmaster", uicb_setnmaster},
 109     {"setncols", uicb_setncols},
 110     /* awesome.c */
 111     {"quit", uicb_quit},
 112     /* statusbar.c */
 113     {"togglebar", uicb_togglebar},
 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, DC *drawcontext)
 158 {
 159     /** \todo most of this stuff aren't freed when we initialize
 160      * the real configuration, we should add a clean conf function */
 161     strcpy(awesomeconf->statustext, "awesome-" VERSION);
 162     awesomeconf->statusbar.width = 0;
 163     awesomeconf->statusbar.height = 0;
 164     awesomeconf->opacity_unfocused = -1;
 165     awesomeconf->nkeys = 0;
 166     awesomeconf->nrules = 0;
 167
 168     awesomeconf->nlayouts = 2;
 169     awesomeconf->layouts = p_new(Layout, awesomeconf->nlayouts + 1);
 170     awesomeconf->layouts[0].symbol = a_strdup("[]=");
 171     awesomeconf->layouts[0].arrange = tile;
 172     awesomeconf->layouts[1].symbol = a_strdup("<><");
 173     awesomeconf->layouts[1].arrange = floating;
 174     awesomeconf->layouts[2].symbol = NULL;
 175     awesomeconf->layouts[2].arrange = NULL;
 176
 177     awesomeconf->ntags = 3;
 178     awesomeconf->tags = p_new(char *, awesomeconf->ntags);
 179     awesomeconf->selected_tags = p_new(Bool, awesomeconf->ntags);
 180     awesomeconf->prev_selected_tags = p_new(Bool, awesomeconf->ntags);
 181     awesomeconf->tag_layouts = p_new(Layout *, awesomeconf->ntags);
 182     awesomeconf->tags[0] = a_strdup("this");
 183     awesomeconf->tags[1] = a_strdup("is");
 184     awesomeconf->tags[2] = a_strdup("awesome");
 185     awesomeconf->selected_tags[0] = True;
 186     awesomeconf->selected_tags[1] = False;
 187     awesomeconf->selected_tags[2] = False;
 188     awesomeconf->prev_selected_tags[0] = False;
 189     awesomeconf->prev_selected_tags[1] = False;
 190     awesomeconf->prev_selected_tags[2] = False;
 191     awesomeconf->tag_layouts[0] = awesomeconf->layouts;
 192     awesomeconf->tag_layouts[1] = awesomeconf->layouts;
 193     awesomeconf->tag_layouts[2] = awesomeconf->layouts;
 194 }
 195
 196 /** Parse configuration file and initialize some stuff
 197  * \param disp Display ref
 198  * \param scr Screen number
 199  * \param drawcontext Draw context
 200  */
 201 void
 202 parse_config(Display * disp, int scr, DC * drawcontext, awesome_config *awesomeconf)
 203 {
 204     /* Main configuration object for parsing*/
 205     config_t awesomelibconf;
 206     config_setting_t *conftags;
 207     config_setting_t *conflayouts, *confsublayouts;
 208     config_setting_t *confrules, *confsubrules;
 209     config_setting_t *confkeys, *confsubkeys, *confkeysmasks, *confkeymaskelem;
 210     int i = 0, j = 0;
 211     double f = 0.0;
 212     const char *tmp, *homedir;
 213     char *confpath;
 214     KeySym tmp_key;
 215
 216     set_default_config(awesomeconf, drawcontext);
 217
 218     homedir = getenv("HOME");
 219     confpath = p_new(char, strlen(homedir) + strlen(AWESOME_CONFIG_FILE) + 2);
 220     strcpy(confpath, homedir);
 221     strcat(confpath, "/");
 222     strcat(confpath, AWESOME_CONFIG_FILE);
 223
 224     config_init(&awesomelibconf);
 225
 226     /* set screen */
 227     awesomeconf->screen = scr;
 228
 229     if(config_read_file(&awesomelibconf, confpath) == CONFIG_FALSE)
 230         fprintf(stderr, "awesome: error parsing configuration file at line %d: %s\n",
 231                config_error_line(&awesomelibconf), config_error_text(&awesomelibconf));
 232
 233
 234     /* font */
 235     tmp = config_lookup_string(&awesomelibconf, "awesome.font");
 236     initfont(tmp ? tmp : "-*-fixed-medium-r-normal-*-13-*-*-*-*-*-*-*", disp, drawcontext);
 237
 238     /* layouts */
 239     conflayouts = config_lookup(&awesomelibconf, "awesome.layouts");
 240
 241     if(!conflayouts)
 242         fprintf(stderr, "awesome: layouts not found in configuration file\n");
 243     else
 244     {
 245         awesomeconf->nlayouts = config_setting_length(conflayouts);
 246         awesomeconf->layouts = p_new(Layout, awesomeconf->nlayouts + 1);
 247         for(i = 0; (confsublayouts = config_setting_get_elem(conflayouts, i)); i++)
 248         {
 249             awesomeconf->layouts[i].arrange =
 250                 name_func_lookup(config_setting_get_string_elem(confsublayouts, 1), LayoutsList);
 251             if(!awesomeconf->layouts[i].arrange)
 252             {
 253                 fprintf(stderr, "awesome: unknown layout #%d in configuration file\n", i);
 254                 awesomeconf->layouts[i].symbol = NULL;
 255                 continue;
 256             }
 257             awesomeconf->layouts[i].symbol = a_strdup(config_setting_get_string_elem(confsublayouts, 0));
 258         }
 259         awesomeconf->layouts[i].symbol = NULL;
 260         awesomeconf->layouts[i].arrange = NULL;
 261     }
 262
 263     if(!awesomeconf->nlayouts)
 264         eprint("awesome: fatal: no default layout available\n");
 265
 266     for(i = 0; i < awesomeconf->nlayouts; i++)
 267     {
 268         j = textw(drawcontext->font.set, drawcontext->font.xfont, awesomeconf->layouts[i].symbol, drawcontext->font.height);
 269         if(j > awesomeconf->statusbar.width)
 270             awesomeconf->statusbar.width = j;
 271     }
 272
 273     awesomeconf->current_layout = awesomeconf->layouts;
 274
 275     /* tags */
 276     conftags = config_lookup(&awesomelibconf, "awesome.tags");
 277
 278     if(!conftags)
 279         fprintf(stderr, "awesome: tags not found in configuration file\n");
 280     else
 281     {
 282         awesomeconf->ntags = config_setting_length(conftags);
 283         awesomeconf->tags = p_new(char *, awesomeconf->ntags);
 284         awesomeconf->selected_tags = p_new(Bool, awesomeconf->ntags);
 285         awesomeconf->prev_selected_tags = p_new(Bool, awesomeconf->ntags);
 286         /** \todo move this in tags or layouts */
 287         awesomeconf->tag_layouts = p_new(Layout *, awesomeconf->ntags);
 288
 289         for(i = 0; (tmp = config_setting_get_string_elem(conftags, i)); i++)
 290         {
 291             awesomeconf->tags[i] = a_strdup(tmp);
 292             awesomeconf->selected_tags[i] = False;
 293             awesomeconf->prev_selected_tags[i] = False;
 294             /** \todo add support for default tag/layout in configuration file */
 295             awesomeconf->tag_layouts[i] = awesomeconf->layouts;
 296         }
 297     }
 298
 299     if(!awesomeconf->ntags)
 300         eprint("awesome: fatal: no tags found in configuration file\n");
 301
 302     /* select first tag by default */
 303     awesomeconf->selected_tags[0] = True;
 304     awesomeconf->prev_selected_tags[0] = True;
 305
 306     /* rules */
 307     confrules = config_lookup(&awesomelibconf, "awesome.rules");
 308
 309     if(!confrules)
 310         fprintf(stderr, "awesome: no rules found in configuration file\n");
 311     else
 312     {
 313         awesomeconf->nrules = config_setting_length(confrules);
 314         awesomeconf->rules = p_new(Rule, awesomeconf->nrules);
 315         for(i = 0; (confsubrules = config_setting_get_elem(confrules, i)); i++)
 316         {
 317             awesomeconf->rules[i].prop = a_strdup(config_setting_get_string(config_setting_get_member(confsubrules, "name")));
 318             awesomeconf->rules[i].tags = a_strdup(config_setting_get_string(config_setting_get_member(confsubrules, "tags")));
 319             if(awesomeconf->rules[i].tags && !strlen(awesomeconf->rules[i].tags))
 320                 awesomeconf->rules[i].tags = NULL;
 321             awesomeconf->rules[i].isfloating =
 322                 config_setting_get_bool(config_setting_get_member(confsubrules, "float"));
 323         }
 324     }
 325
 326     /* modkey */
 327     tmp_key = key_mask_lookup(config_lookup_string(&awesomelibconf, "awesome.modkey"));
 328     awesomeconf->modkey = tmp_key ? tmp_key : Mod1Mask;
 329
 330     /* find numlock mask */
 331     awesomeconf->numlockmask = get_numlockmask(disp);
 332
 333     /* keys */
 334     confkeys = config_lookup(&awesomelibconf, "awesome.keys");
 335
 336     if(!confkeys)
 337         fprintf(stderr, "awesome: no keys found in configuration file\n");
 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 && !strncmp(tmp, "off", 6))
 359         awesomeconf->statusbar_default_position = BarOff;
 360     else if(tmp && !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)
 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(tmp ? tmp : "#dddddd", disp, scr);
 397
 398     tmp = config_lookup_string(&awesomelibconf, "awesome.normal_bg_color");
 399     drawcontext->norm[ColBG] = initcolor(tmp ? tmp : "#000000", disp, scr);
 400
 401     tmp = config_lookup_string(&awesomelibconf, "awesome.normal_fg_color");
 402     drawcontext->norm[ColFG] = initcolor(tmp ? tmp : "#ffffff", disp, scr);
 403
 404     tmp = config_lookup_string(&awesomelibconf, "awesome.focus_border_color");
 405     drawcontext->sel[ColBorder] = initcolor(tmp ? tmp : "#008b8b", disp, scr);
 406
 407     tmp = config_lookup_string(&awesomelibconf, "awesome.focus_bg_color");
 408     drawcontext->sel[ColBG] = initcolor(tmp ? tmp : "#008b8b", disp, scr);
 409
 410     tmp = config_lookup_string(&awesomelibconf, "awesome.focus_fg_color");
 411     drawcontext->sel[ColFG] = initcolor(tmp ? tmp : "#ffffff", disp, scr);
 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(const char *fontstr, Display * disp, DC * drawcontext)
 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(const char *colstr, Display * disp, int scr)
 498 {
 499     Colormap cmap = DefaultColormap(disp, scr);
 500     XColor color;
 501     if(!XAllocNamedColor(disp, cmap, colstr, &color, &color))
 502         die("awesome: error, cannot allocate color '%s'\n", colstr);
 503     return color.pixel;
 504 }