screen.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include "dwm.h"
   3 #include <regex.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <X11/Xutil.h>
   8
   9 /* static */
  10
  11 typedef struct {
  12         const char *symbol;
  13         void (*arrange)(void);
  14 } Layout;
  15
  16 typedef struct {
  17         const char *prop;
  18         const char *tags;
  19         Bool isfloating;
  20 } Rule;
  21
  22 typedef struct {
  23         regex_t *propregex;
  24         regex_t *tagregex;
  25 } Regs;
  26
  27 TAGS
  28 RULES
  29
  30 static unsigned int nrules = 0;
  31 static unsigned int nlayouts = 0;
  32 static unsigned int ltidx = 0; /* default */
  33 static Regs *regs = NULL;
  34
  35 static unsigned int
  36 idxoftag(const char *tag) {
  37         unsigned int i;
  38
  39         for(i = 0; i < ntags; i++)
  40                 if(tags[i] == tag)
  41                         return i;
  42         return 0;
  43 }
  44
  45 static void
  46 floating(void) { /* default floating layout */
  47         Client *c;
  48
  49         for(c = clients; c; c = c->next)
  50                 if(isvisible(c))
  51                         resize(c, c->x, c->y, c->w, c->h, True);
  52 }
  53
  54 LAYOUTS
  55
  56 /* extern */
  57
  58 unsigned int blw = 0;
  59
  60 void
  61 applyrules(Client *c) {
  62         static char buf[512];
  63         unsigned int i, j;
  64         regmatch_t tmp;
  65         Bool matched = False;
  66         XClassHint ch = { 0 };
  67
  68         /* rule matching */
  69         XGetClassHint(dpy, c->win, &ch);
  70         snprintf(buf, sizeof buf, "%s:%s:%s",
  71                         ch.res_class ? ch.res_class : "",
  72                         ch.res_name ? ch.res_name : "", c->name);
  73         for(i = 0; i < nrules; i++)
  74                 if(regs[i].propregex && !regexec(regs[i].propregex, buf, 1, &tmp, 0)) {
  75                         c->isfloating = rules[i].isfloating;
  76                         for(j = 0; regs[i].tagregex && j < ntags; j++) {
  77                                 if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {
  78                                         matched = True;
  79                                         c->tags[j] = True;
  80                                 }
  81                         }
  82                 }
  83         if(ch.res_class)
  84                 XFree(ch.res_class);
  85         if(ch.res_name)
  86                 XFree(ch.res_name);
  87         if(!matched)
  88                 for(i = 0; i < ntags; i++)
  89                         c->tags[i] = seltags[i];
  90 }
  91
  92 void
  93 arrange(void) {
  94         Client *c;
  95
  96         for(c = clients; c; c = c->next)
  97                 if(isvisible(c))
  98                         unban(c);
  99                 else
 100                         ban(c);
 101         layouts[ltidx].arrange();
 102         focus(NULL);
 103         restack();
 104 }
 105
 106 void
 107 compileregs(void) {
 108         unsigned int i;
 109         regex_t *reg;
 110
 111         if(regs)
 112                 return;
 113         nrules = sizeof rules / sizeof rules[0];
 114         regs = emallocz(nrules * sizeof(Regs));
 115         for(i = 0; i < nrules; i++) {
 116                 if(rules[i].prop) {
 117                         reg = emallocz(sizeof(regex_t));
 118                         if(regcomp(reg, rules[i].prop, REG_EXTENDED))
 119                                 free(reg);
 120                         else
 121                                 regs[i].propregex = reg;
 122                 }
 123                 if(rules[i].tags) {
 124                         reg = emallocz(sizeof(regex_t));
 125                         if(regcomp(reg, rules[i].tags, REG_EXTENDED))
 126                                 free(reg);
 127                         else
 128                                 regs[i].tagregex = reg;
 129                 }
 130         }
 131 }
 132
 133 void
 134 focusnext(const char *arg) {
 135         Client *c;
 136
 137         if(!sel)
 138                 return;
 139         for(c = sel->next; c && !isvisible(c); c = c->next);
 140         if(!c)
 141                 for(c = clients; c && !isvisible(c); c = c->next);
 142         if(c) {
 143                 focus(c);
 144                 restack();
 145         }
 146 }
 147
 148 void
 149 focusprev(const char *arg) {
 150         Client *c;
 151
 152         if(!sel)
 153                 return;
 154         for(c = sel->prev; c && !isvisible(c); c = c->prev);
 155         if(!c) {
 156                 for(c = clients; c && c->next; c = c->next);
 157                 for(; c && !isvisible(c); c = c->prev);
 158         }
 159         if(c) {
 160                 focus(c);
 161                 restack();
 162         }
 163 }
 164
 165 const char *
 166 getsymbol(void)
 167 {
 168         return layouts[ltidx].symbol;
 169 }
 170
 171 void
 172 initlayouts(void) {
 173         unsigned int i, w;
 174
 175         nlayouts = sizeof layouts / sizeof layouts[0];
 176         for(blw = i = 0; i < nlayouts; i++) {
 177                 w = textw(layouts[i].symbol);
 178                 if(w > blw)
 179                         blw = w;
 180         }
 181 }
 182
 183 Bool
 184 isfloating(void) {
 185         return layouts[ltidx].arrange == floating;
 186 }
 187
 188 Bool
 189 isarrange(void (*func)())
 190 {
 191         return func == layouts[ltidx].arrange;
 192 }
 193
 194 Bool
 195 isvisible(Client *c) {
 196         unsigned int i;
 197
 198         for(i = 0; i < ntags; i++)
 199                 if(c->tags[i] && seltags[i])
 200                         return True;
 201         return False;
 202 }
 203
 204 Client *
 205 nexttiled(Client *c) {
 206         for(; c && (c->isfloating || !isvisible(c)); c = c->next);
 207         return c;
 208 }
 209
 210 void
 211 restack(void) {
 212         Client *c;
 213         XEvent ev;
 214         XWindowChanges wc;
 215
 216         drawstatus();
 217         if(!sel)
 218                 return;
 219         if(sel->isfloating || isfloating())
 220                 XRaiseWindow(dpy, sel->win);
 221         if(!isfloating()) {
 222                 wc.stack_mode = Below;
 223                 wc.sibling = barwin;
 224                 if(!sel->isfloating) {
 225                         XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);
 226                         wc.sibling = sel->win;
 227                 }
 228                 for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
 229                         if(c == sel)
 230                                 continue;
 231                         XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
 232                         wc.sibling = c->win;
 233                 }
 234         }
 235         XSync(dpy, False);
 236         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 237 }
 238
 239 void
 240 setlayout(const char *arg) {
 241         unsigned int i;
 242
 243         if(!arg) {
 244                 if(++ltidx == nlayouts)
 245                         ltidx = 0;;
 246         }
 247         else {
 248                 for(i = 0; i < nlayouts; i++)
 249                         if(!strcmp(arg, layouts[i].symbol))
 250                                 break;
 251                 if(i == nlayouts)
 252                         return;
 253                 ltidx = i;
 254         }
 255         if(sel)
 256                 arrange();
 257         else
 258                 drawstatus();
 259 }
 260
 261 void
 262 tag(const char *arg) {
 263         unsigned int i;
 264
 265         if(!sel)
 266                 return;
 267         for(i = 0; i < ntags; i++)
 268                 sel->tags[i] = arg == NULL;
 269         i = idxoftag(arg);
 270         if(i >= 0 && i < ntags)
 271                 sel->tags[i] = True;
 272         arrange();
 273 }
 274
 275 void
 276 togglebar(const char *arg) {
 277         if(bpos == BarOff)
 278                 bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
 279         else
 280                 bpos = BarOff;
 281         updatebarpos();
 282         arrange();
 283 }
 284
 285 void
 286 togglefloating(const char *arg) {
 287         if(!sel)
 288                 return;
 289         sel->isfloating = !sel->isfloating;
 290         if(sel->isfloating)
 291                 resize(sel, sel->x, sel->y, sel->w, sel->h, True);
 292         arrange();
 293 }
 294
 295 void
 296 togglemax(const char *arg) {
 297         XEvent ev;
 298
 299         if(!sel || (!isfloating() && !sel->isfloating) || sel->isfixed)
 300                 return;
 301         if((sel->ismax = !sel->ismax)) {
 302                 sel->rx = sel->x;
 303                 sel->ry = sel->y;
 304                 sel->rw = sel->w;
 305                 sel->rh = sel->h;
 306                 resize(sel, wax, way, waw - 2 * sel->border, wah - 2 * sel->border, True);
 307         }
 308         else
 309                 resize(sel, sel->rx, sel->ry, sel->rw, sel->rh, True);
 310         drawstatus();
 311         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 312 }
 313
 314 void
 315 toggletag(const char *arg) {
 316         unsigned int i, j;
 317
 318         if(!sel)
 319                 return;
 320         i = idxoftag(arg);
 321         sel->tags[i] = !sel->tags[i];
 322         for(j = 0; j < ntags && !sel->tags[j]; j++);
 323         if(j == ntags)
 324                 sel->tags[i] = True;
 325         arrange();
 326 }
 327
 328 void
 329 toggleview(const char *arg) {
 330         unsigned int i, j;
 331
 332         i = idxoftag(arg);
 333         seltags[i] = !seltags[i];
 334         for(j = 0; j < ntags && !seltags[j]; j++);
 335         if(j == ntags)
 336                 seltags[i] = True; /* cannot toggle last view */
 337         arrange();
 338 }
 339
 340 void
 341 updatebarpos(void) {
 342         XEvent ev;
 343
 344         wax = sx;
 345         way = sy;
 346         wah = sh;
 347         waw = sw;
 348         switch(bpos) {
 349         default:
 350                 wah -= bh;
 351                 way += bh;
 352                 XMoveWindow(dpy, barwin, sx, sy);
 353                 break;
 354         case BarBot:
 355                 wah -= bh;
 356                 XMoveWindow(dpy, barwin, sx, sy + wah);
 357                 break;
 358         case BarOff:
 359                 XMoveWindow(dpy, barwin, sx, sy - bh);
 360                 break;
 361         }
 362         XSync(dpy, False);
 363         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 364 }
 365
 366 void
 367 view(const char *arg) {
 368         unsigned int i;
 369
 370         for(i = 0; i < ntags; i++)
 371                 seltags[i] = arg == NULL;
 372         i = idxoftag(arg);
 373         if(i >= 0 && i < ntags)
 374                 seltags[i] = True;
 375         arrange();
 376 }