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/max.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", layout_tile},
  76     {"tileleft", layout_tileleft},
  77     {"max", layout_max},
  78     {"floating", layout_floating},
  79     {NULL, NULL}
  80 };
  81
  82 /** List of available UI bindable callbacks and functions */
  83 static const NameFuncLink KeyfuncList[] = {
  84     /* util.c */
  85     {"spawn", uicb_spawn},
  86     /* client.c */
  87     {"killclient", uicb_killclient},
  88     {"moveresize", uicb_moveresize},
  89     {"settrans", uicb_settrans},
  90     {"setborder", uicb_setborder},
  91     /* tag.c */
  92     {"tag", uicb_tag},
  93     {"togglefloating", uicb_togglefloating},
  94     {"toggleview", uicb_toggleview},
  95     {"toggletag", uicb_toggletag},
  96     {"view", uicb_view},
  97     {"view_tag_prev_selected", uicb_tag_prev_selected},
  98     {"view_tag_previous", uicb_tag_viewprev},
  99     {"view_tag_next", uicb_tag_viewnext},
 100     /* layout.c */
 101     {"setlayout", uicb_setlayout},
 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     /* statusbar.c */
 115     {"togglebar", uicb_togglebar},
 116     {NULL, NULL}
 117 };
 118
 119 /** Lookup for a key mask from its name
 120  * \param keyname Key name
 121  * \return Key mask or 0 if not found
 122  */
 123 static KeySym
 124 key_mask_lookup(const char *keyname)
 125 {
 126     int i;
 127
 128     if(keyname)
 129         for(i = 0; KeyModList[i].name; i++)
 130             if(!a_strcmp(keyname, KeyModList[i].name))
 131                 return KeyModList[i].keysym;
 132
 133     return 0;
 134 }
 135
 136 /** Lookup for a function pointer from its name
 137  * in the given NameFuncLink list
 138  * \param funcname Function name
 139  * \param list Function and name link list
 140  * \return function pointer
 141  */
 142 static void *
 143 name_func_lookup(const char *funcname, const NameFuncLink * list)
 144 {
 145     int i;
 146
 147     if(funcname && list)
 148         for(i = 0; list[i].name; i++)
 149             if(!a_strcmp(funcname, list[i].name))
 150                 return list[i].func;
 151
 152     return NULL;
 153 }
 154
 155 /** Set default configuration
 156  * \param awesomeconf awesome config ref
 157  */
 158 static void
 159 set_default_config(awesome_config *awesomeconf)
 160 {
 161     /** \todo most of this stuff aren't freed when we initialize
 162      * the real configuration, we should add a clean conf function */
 163     strcpy(awesomeconf->statustext, "awesome-" VERSION);
 164     awesomeconf->statusbar.width = 0;
 165     awesomeconf->statusbar.height = 0;
 166     awesomeconf->opacity_unfocused = -1;
 167     awesomeconf->nkeys = 0;
 168     awesomeconf->nrules = 0;
 169
 170     awesomeconf->nlayouts = 2;
 171     awesomeconf->layouts = p_new(Layout, awesomeconf->nlayouts + 1);
 172     awesomeconf->layouts[0].symbol = a_strdup("[]=");
 173     awesomeconf->layouts[0].arrange = layout_tile;
 174     awesomeconf->layouts[1].symbol = a_strdup("<><");
 175     awesomeconf->layouts[1].arrange = layout_floating;
 176     awesomeconf->layouts[2].symbol = NULL;
 177     awesomeconf->layouts[2].arrange = NULL;
 178
 179     awesomeconf->ntags = 3;
 180     awesomeconf->tags = p_new(char *, awesomeconf->ntags);
 181     awesomeconf->selected_tags = p_new(Bool, awesomeconf->ntags);
 182     awesomeconf->prev_selected_tags = p_new(Bool, awesomeconf->ntags);
 183     awesomeconf->tag_layouts = p_new(Layout *, awesomeconf->ntags);
 184     awesomeconf->tags[0] = a_strdup("this");
 185     awesomeconf->tags[1] = a_strdup("is");
 186     awesomeconf->tags[2] = a_strdup("awesome");
 187     awesomeconf->selected_tags[0] = True;
 188     awesomeconf->selected_tags[1] = False;
 189     awesomeconf->selected_tags[2] = False;
 190     awesomeconf->prev_selected_tags[0] = False;
 191     awesomeconf->prev_selected_tags[1] = False;
 192     awesomeconf->prev_selected_tags[2] = False;
 193     awesomeconf->tag_layouts[0] = awesomeconf->layouts;
 194     awesomeconf->tag_layouts[1] = awesomeconf->layouts;
 195     awesomeconf->tag_layouts[2] = awesomeconf->layouts;
 196 }
 197
 198 /** Parse configuration file and initialize some stuff
 199  * \param disp Display ref
 200  * \param scr Screen number
 201  * \param drawcontext Draw context
 202  */
 203 void
 204 parse_config(Display * disp, int scr, DC * drawcontext, awesome_config *awesomeconf)
 205 {
 206     /* Main configuration object for parsing*/
 207     config_t awesomelibconf;
 208     config_setting_t *conftags;
 209     config_setting_t *conflayouts, *confsublayouts;
 210     config_setting_t *confrules, *confsubrules;
 211     config_setting_t *confkeys, *confsubkeys, *confkeysmasks, *confkeymaskelem;
 212     int i = 0, j = 0;
 213     double f = 0.0;
 214     const char *tmp, *homedir;
 215     char *confpath;
 216     KeySym tmp_key;
 217
 218     set_default_config(awesomeconf);
 219
 220     homedir = getenv("HOME");
 221     confpath = p_new(char, strlen(homedir) + strlen(AWESOME_CONFIG_FILE) + 2);
 222     strcpy(confpath, homedir);
 223     strcat(confpath, "/");
 224     strcat(confpath, AWESOME_CONFIG_FILE);
 225
 226     config_init(&awesomelibconf);
 227
 228     /* set screen */
 229     awesomeconf->screen = scr;
 230
 231     if(config_read_file(&awesomelibconf, confpath) == CONFIG_FALSE)
 232         fprintf(stderr, "awesome: error parsing configuration file at line %d: %s\n",
 233                config_error_line(&awesomelibconf), config_error_text(&awesomelibconf));
 234
 235
 236     /* font */
 237     tmp = config_lookup_string(&awesomelibconf, "awesome.font");
 238     initfont(tmp ? tmp : "-*-fixed-medium-r-normal-*-13-*-*-*-*-*-*-*", disp, drawcontext);
 239
 240     /* layouts */
 241     conflayouts = config_lookup(&awesomelibconf, "awesome.layouts");
 242
 243     if(!conflayouts)
 244         fprintf(stderr, "awesome: layouts not found in configuration file\n");
 245     else
 246     {
 247         awesomeconf->nlayouts = config_setting_length(conflayouts);
 248         awesomeconf->layouts = p_new(Layout, awesomeconf->nlayouts + 1);
 249         for(i = 0; (confsublayouts = config_setting_get_elem(conflayouts, i)); i++)
 250         {
 251             awesomeconf->layouts[i].arrange =
 252                 name_func_lookup(config_setting_get_string_elem(confsublayouts, 1), LayoutsList);
 253             if(!awesomeconf->layouts[i].arrange)
 254             {
 255                 fprintf(stderr, "awesome: unknown layout #%d in configuration file\n", i);
 256                 awesomeconf->layouts[i].symbol = NULL;
 257                 continue;
 258             }
 259             awesomeconf->layouts[i].symbol = a_strdup(config_setting_get_string_elem(confsublayouts, 0));
 260         }
 261         awesomeconf->layouts[i].symbol = NULL;
 262         awesomeconf->layouts[i].arrange = NULL;
 263     }
 264
 265     if(!awesomeconf->nlayouts)
 266         eprint("awesome: fatal: no default layout available\n");
 267
 268     for(i = 0; i < awesomeconf->nlayouts; i++)
 269     {
 270         j = textw(drawcontext->font.set, drawcontext->font.xfont, awesomeconf->layouts[i].symbol, drawcontext->font.height);
 271         if(j > awesomeconf->statusbar.width)
 272             awesomeconf->statusbar.width = j;
 273     }
 274
 275     awesomeconf->current_layout = awesomeconf->layouts;
 276
 277     /* tags */
 278     conftags = config_lookup(&awesomelibconf, "awesome.tags");
 279
 280     if(!conftags)
 281         fprintf(stderr, "awesome: tags not found in configuration file\n");
 282     else
 283     {
 284         awesomeconf->ntags = config_setting_length(conftags);
 285         awesomeconf->tags = p_new(char *, awesomeconf->ntags);
 286         awesomeconf->selected_tags = p_new(Bool, awesomeconf->ntags);
 287         awesomeconf->prev_selected_tags = p_new(Bool, awesomeconf->ntags);
 288         /** \todo move this in tags or layouts */
 289         awesomeconf->tag_layouts = p_new(Layout *, awesomeconf->ntags);
 290
 291         for(i = 0; (tmp = config_setting_get_string_elem(conftags, i)); i++)
 292         {
 293             awesomeconf->tags[i] = a_strdup(tmp);
 294             awesomeconf->selected_tags[i] = False;
 295             awesomeconf->prev_selected_tags[i] = False;
 296             /** \todo add support for default tag/layout in configuration file */
 297             awesomeconf->tag_layouts[i] = awesomeconf->layouts;
 298         }
 299     }
 300
 301     if(!awesomeconf->ntags)
 302         eprint("awesome: fatal: no tags found in configuration file\n");
 303
 304     /* select first tag by default */
 305     awesomeconf->selected_tags[0] = True;
 306     awesomeconf->prev_selected_tags[0] = True;
 307
 308     /* rules */
 309     confrules = config_lookup(&awesomelibconf, "awesome.rules");
 310
 311     if(!confrules)
 312         fprintf(stderr, "awesome: no rules found in configuration file\n");
 313     else
 314     {
 315         awesomeconf->nrules = config_setting_length(confrules);
 316         awesomeconf->rules = p_new(Rule, awesomeconf->nrules);
 317         for(i = 0; (confsubrules = config_setting_get_elem(confrules, i)); i++)
 318         {
 319             awesomeconf->rules[i].prop = a_strdup(config_setting_get_string(config_setting_get_member(confsubrules, "name")));
 320             awesomeconf->rules[i].tags = a_strdup(config_setting_get_string(config_setting_get_member(confsubrules, "tags")));
 321             if(awesomeconf->rules[i].tags && !strlen(awesomeconf->rules[i].tags))
 322                 awesomeconf->rules[i].tags = NULL;
 323             awesomeconf->rules[i].isfloating =
 324                 config_setting_get_bool(config_setting_get_member(confsubrules, "float"));
 325         }
 326     }
 327
 328     /* modkey */
 329     tmp_key = key_mask_lookup(config_lookup_string(&awesomelibconf, "awesome.modkey"));
 330     awesomeconf->modkey = tmp_key ? tmp_key : Mod1Mask;
 331
 332     /* find numlock mask */
 333     awesomeconf->numlockmask = get_numlockmask(disp);
 334
 335     /* keys */
 336     confkeys = config_lookup(&awesomelibconf, "awesome.keys");
 337
 338     if(!confkeys)
 339         fprintf(stderr, "awesome: no keys found in configuration file\n");
 340     else
 341     {
 342         awesomeconf->nkeys = config_setting_length(confkeys);
 343         awesomeconf->keys = p_new(Key, awesomeconf->nkeys);
 344
 345         for(i = 0; (confsubkeys = config_setting_get_elem(confkeys, i)); i++)
 346         {
 347             confkeysmasks = config_setting_get_elem(confsubkeys, 0);
 348             for(j = 0; (confkeymaskelem = config_setting_get_elem(confkeysmasks, j)); j++)
 349                 awesomeconf->keys[i].mod |= key_mask_lookup(config_setting_get_string(confkeymaskelem));
 350             awesomeconf->keys[i].keysym = XStringToKeysym(config_setting_get_string_elem(confsubkeys, 1));
 351             awesomeconf->keys[i].func =
 352                 name_func_lookup(config_setting_get_string_elem(confsubkeys, 2), KeyfuncList);
 353             awesomeconf->keys[i].arg = a_strdup(config_setting_get_string_elem(confsubkeys, 3));
 354         }
 355     }
 356
 357     /* barpos */
 358     tmp = config_lookup_string(&awesomelibconf, "awesome.barpos");
 359
 360     if(tmp && !strncmp(tmp, "off", 6))
 361         awesomeconf->statusbar_default_position = BarOff;
 362     else if(tmp && !strncmp(tmp, "bottom", 6))
 363         awesomeconf->statusbar_default_position = BarBot;
 364     else
 365         awesomeconf->statusbar_default_position = BarTop;
 366
 367     awesomeconf->statusbar.position = awesomeconf->statusbar_default_position;
 368
 369     /* borderpx */
 370     awesomeconf->borderpx = config_lookup_int(&awesomelibconf, "awesome.borderpx");
 371
 372     /* opacity */
 373     awesomeconf->opacity_unfocused = config_lookup_int(&awesomelibconf, "awesome.opacity_unfocused");
 374     if(awesomeconf->opacity_unfocused >= 100)
 375         awesomeconf->opacity_unfocused = -1;
 376
 377     /* snap */
 378     i = config_lookup_int(&awesomelibconf, "awesome.snap");
 379     awesomeconf->snap = i ? i : 8;
 380
 381     /* nmaster */
 382     i = config_lookup_int(&awesomelibconf, "awesome.nmaster");
 383     awesomeconf->nmaster = i ? i : 1;
 384
 385     /* ncols */
 386     i = config_lookup_int(&awesomelibconf, "awesome.ncols");
 387     awesomeconf->ncols = i ? i : 1;
 388
 389     /* mwfact */
 390     f = config_lookup_float(&awesomelibconf, "awesome.mwfact");
 391     awesomeconf->mwfact = f ? f : 0.6;
 392
 393     /* resize_hints */
 394     awesomeconf->resize_hints = config_lookup_float(&awesomelibconf, "awesome.resize_hints");
 395
 396     /* colors */
 397     tmp = config_lookup_string(&awesomelibconf, "awesome.normal_border_color");
 398     drawcontext->norm[ColBorder] = initcolor(tmp ? tmp : "#dddddd", disp, scr);
 399
 400     tmp = config_lookup_string(&awesomelibconf, "awesome.normal_bg_color");
 401     drawcontext->norm[ColBG] = initcolor(tmp ? tmp : "#000000", disp, scr);
 402
 403     tmp = config_lookup_string(&awesomelibconf, "awesome.normal_fg_color");
 404     drawcontext->norm[ColFG] = initcolor(tmp ? tmp : "#ffffff", disp, scr);
 405
 406     tmp = config_lookup_string(&awesomelibconf, "awesome.focus_border_color");
 407     drawcontext->sel[ColBorder] = initcolor(tmp ? tmp : "#008b8b", disp, scr);
 408
 409     tmp = config_lookup_string(&awesomelibconf, "awesome.focus_bg_color");
 410     drawcontext->sel[ColBG] = initcolor(tmp ? tmp : "#008b8b", disp, scr);
 411
 412     tmp = config_lookup_string(&awesomelibconf, "awesome.focus_fg_color");
 413     drawcontext->sel[ColFG] = initcolor(tmp ? tmp : "#ffffff", disp, scr);
 414
 415     config_destroy(&awesomelibconf);
 416     p_delete(&confpath);
 417 }
 418
 419 /** Initialize font from X side and store in draw context
 420  * \param fontstr Font name
 421  * \param disp Display ref
 422  * \param drawcontext Draw context
 423  */
 424 static void
 425 initfont(const char *fontstr, Display * disp, DC * drawcontext)
 426 {
 427     char *def, **missing;
 428     int i, n;
 429
 430     missing = NULL;
 431     if(drawcontext->font.set)
 432         XFreeFontSet(disp, drawcontext->font.set);
 433     drawcontext->font.set = XCreateFontSet(disp, fontstr, &missing, &n, &def);
 434     if(missing)
 435     {
 436         while(n--)
 437             fprintf(stderr, "awesome: missing fontset: %s\n", missing[n]);
 438         XFreeStringList(missing);
 439     }
 440     if(drawcontext->font.set)
 441     {
 442         XFontSetExtents *font_extents;
 443         XFontStruct **xfonts;
 444         char **font_names;
 445         drawcontext->font.ascent = drawcontext->font.descent = 0;
 446         font_extents = XExtentsOfFontSet(drawcontext->font.set);
 447         n = XFontsOfFontSet(drawcontext->font.set, &xfonts, &font_names);
 448         for(i = 0, drawcontext->font.ascent = 0, drawcontext->font.descent = 0; i < n; i++)
 449         {
 450             if(drawcontext->font.ascent < (*xfonts)->ascent)
 451                 drawcontext->font.ascent = (*xfonts)->ascent;
 452             if(drawcontext->font.descent < (*xfonts)->descent)
 453                 drawcontext->font.descent = (*xfonts)->descent;
 454             xfonts++;
 455         }
 456     }
 457     else
 458     {
 459         if(drawcontext->font.xfont)
 460             XFreeFont(disp, drawcontext->font.xfont);
 461         drawcontext->font.xfont = NULL;
 462         if(!(drawcontext->font.xfont = XLoadQueryFont(disp, fontstr))
 463            && !(drawcontext->font.xfont = XLoadQueryFont(disp, "fixed")))
 464             die("awesome: error, cannot load font: '%s'\n", fontstr);
 465         drawcontext->font.ascent = drawcontext->font.xfont->ascent;
 466         drawcontext->font.descent = drawcontext->font.xfont->descent;
 467     }
 468     drawcontext->font.height = drawcontext->font.ascent + drawcontext->font.descent;
 469 }
 470
 471 static unsigned int
 472 get_numlockmask(Display *disp)
 473 {
 474     XModifierKeymap *modmap;
 475     unsigned int mask = 0;
 476     int i, j;
 477
 478     modmap = XGetModifierMapping(disp);
 479     for(i = 0; i < 8; i++)
 480         for(j = 0; j < modmap->max_keypermod; j++)
 481         {
 482             if(modmap->modifiermap[i * modmap->max_keypermod + j]
 483                == XKeysymToKeycode(disp, XK_Num_Lock))
 484                 mask = (1 << i);
 485         }
 486
 487     XFreeModifiermap(modmap);
 488
 489     return mask;
 490 }
 491
 492 /** Initialize color from X side
 493  * \param colorstr Color code
 494  * \param disp Display ref
 495  * \param scr Screen number
 496  * \return XColor pixel
 497  */
 498 static unsigned long
 499 initcolor(const char *colstr, Display * disp, int scr)
 500 {
 501     Colormap cmap = DefaultColormap(disp, scr);
 502     XColor color;
 503     if(!XAllocNamedColor(disp, cmap, colstr, &color, &color))
 504         die("awesome: error, cannot allocate color '%s'\n", colstr);
 505     return color.pixel;
 506 }