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