screen.c

   1 /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
   2  * See LICENSE file for license details.
   3  */
   4 #include "dwm.h"
   5 #include <regex.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <sys/types.h>
  10 #include <X11/Xutil.h>
  11
  12 unsigned int master = MASTER;
  13 unsigned int nmaster = NMASTER;
  14 unsigned int blw = 0;
  15 Layout *lt = NULL;
  16
  17 /* static */
  18
  19 typedef struct {
  20         const char *prop;
  21         const char *tags;
  22         Bool isfloat;
  23 } Rule;
  24
  25 typedef struct {
  26         regex_t *propregex;
  27         regex_t *tagregex;
  28 } Regs;
  29
  30 LAYOUTS
  31 TAGS
  32 RULES
  33
  34 static Regs *regs = NULL;
  35 static unsigned int nrules = 0;
  36 static unsigned int nlayouts = 0;
  37
  38 /* extern */
  39
  40 void
  41 compileregs(void) {
  42         unsigned int i;
  43         regex_t *reg;
  44
  45         if(regs)
  46                 return;
  47         nrules = sizeof rule / sizeof rule[0];
  48         regs = emallocz(nrules * sizeof(Regs));
  49         for(i = 0; i < nrules; i++) {
  50                 if(rule[i].prop) {
  51                         reg = emallocz(sizeof(regex_t));
  52                         if(regcomp(reg, rule[i].prop, REG_EXTENDED))
  53                                 free(reg);
  54                         else
  55                                 regs[i].propregex = reg;
  56                 }
  57                 if(rule[i].tags) {
  58                         reg = emallocz(sizeof(regex_t));
  59                         if(regcomp(reg, rule[i].tags, REG_EXTENDED))
  60                                 free(reg);
  61                         else
  62                                 regs[i].tagregex = reg;
  63                 }
  64         }
  65 }
  66
  67 void
  68 dofloat(void) {
  69         Client *c;
  70
  71         for(c = clients; c; c = c->next) {
  72                 if(isvisible(c)) {
  73                         if(c->isbanned)
  74                                 XMoveWindow(dpy, c->win, c->x, c->y);
  75                         c->isbanned = False;
  76                         resize(c, c->x, c->y, c->w, c->h, True);
  77                 }
  78                 else {
  79                         c->isbanned = True;
  80                         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  81                 }
  82         }
  83         if(!sel || !isvisible(sel)) {
  84                 for(c = stack; c && !isvisible(c); c = c->snext);
  85                 focus(c);
  86         }
  87         restack();
  88 }
  89
  90 void
  91 dotile(void) {
  92         unsigned int i, n, nx, ny, nw, nh, mw, mh, tw, th;
  93         Client *c;
  94
  95         for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
  96                 n++;
  97         /* window geoms */
  98         mh = (n > nmaster) ? wah / nmaster : wah / (n > 0 ? n : 1);
  99         mw = (n > nmaster) ? (waw * master) / 1000 : waw;
 100         th = (n > nmaster) ? wah / (n - nmaster) : 0;
 101         tw = waw - mw;
 102
 103         for(i = 0, c = clients; c; c = c->next)
 104                 if(isvisible(c)) {
 105                         if(c->isbanned)
 106                                 XMoveWindow(dpy, c->win, c->x, c->y);
 107                         c->isbanned = False;
 108                         if(c->isfloat)
 109                                 continue;
 110                         c->ismax = False;
 111                         nx = wax;
 112                         ny = way;
 113                         if(i < nmaster) {
 114                                 ny += i * mh;
 115                                 nw = mw - 2 * BORDERPX;
 116                                 nh = mh - 2 * BORDERPX;
 117                         }
 118                         else {  /* tile window */
 119                                 nx += mw;
 120                                 nw = tw - 2 * BORDERPX;
 121                                 if(th > 2 * BORDERPX) {
 122                                         ny += (i - nmaster) * th;
 123                                         nh = th - 2 * BORDERPX;
 124                                 }
 125                                 else /* fallback if th <= 2 * BORDERPX */
 126                                         nh = wah - 2 * BORDERPX;
 127                         }
 128                         resize(c, nx, ny, nw, nh, False);
 129                         i++;
 130                 }
 131                 else {
 132                         c->isbanned = True;
 133                         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 134                 }
 135         if(!sel || !isvisible(sel)) {
 136                 for(c = stack; c && !isvisible(c); c = c->snext);
 137                 focus(c);
 138         }
 139         restack();
 140 }
 141
 142 void
 143 incnmaster(Arg *arg) {
 144         if((lt->arrange == dofloat) || (nmaster + arg->i < 1)
 145         || (wah / (nmaster + arg->i) <= 2 * BORDERPX))
 146                 return;
 147         nmaster += arg->i;
 148         if(sel)
 149                 lt->arrange();
 150         else
 151                 drawstatus();
 152 }
 153
 154 void
 155 initlayouts(void) {
 156         unsigned int i, w;
 157
 158         lt = &layout[0];
 159         nlayouts = sizeof layout / sizeof layout[0];
 160         for(blw = i = 0; i < nlayouts; i++) {
 161                 w = textw(layout[i].symbol);
 162                 if(w > blw)
 163                         blw = w;
 164         }
 165 }
 166
 167 Bool
 168 isvisible(Client *c) {
 169         unsigned int i;
 170
 171         for(i = 0; i < ntags; i++)
 172                 if(c->tags[i] && seltag[i])
 173                         return True;
 174         return False;
 175 }
 176
 177 void
 178 resizemaster(Arg *arg) {
 179         if(lt->arrange != dotile)
 180                 return;
 181         if(arg->i == 0)
 182                 master = MASTER;
 183         else {
 184                 if(waw * (master + arg->i) / 1000 >= waw - 2 * BORDERPX
 185                 || waw * (master + arg->i) / 1000 <= 2 * BORDERPX)
 186                         return;
 187                 master += arg->i;
 188         }
 189         lt->arrange();
 190 }
 191
 192 void
 193 restack(void) {
 194         Client *c;
 195         XEvent ev;
 196
 197         drawstatus();
 198         if(!sel)
 199                 return;
 200         if(sel->isfloat || lt->arrange == dofloat)
 201                 XRaiseWindow(dpy, sel->win);
 202         if(lt->arrange != dofloat) {
 203                 if(!sel->isfloat)
 204                         XLowerWindow(dpy, sel->win);
 205                 for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
 206                         if(c == sel)
 207                                 continue;
 208                         XLowerWindow(dpy, c->win);
 209                 }
 210         }
 211         XSync(dpy, False);
 212         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 213 }
 214
 215 void
 216 settags(Client *c, Client *trans) {
 217         char prop[512];
 218         unsigned int i, j;
 219         regmatch_t tmp;
 220         Bool matched = trans != NULL;
 221         XClassHint ch = { 0 };
 222
 223         if(matched)
 224                 for(i = 0; i < ntags; i++)
 225                         c->tags[i] = trans->tags[i];
 226         else {
 227                 XGetClassHint(dpy, c->win, &ch);
 228                 snprintf(prop, sizeof prop, "%s:%s:%s",
 229                                 ch.res_class ? ch.res_class : "",
 230                                 ch.res_name ? ch.res_name : "", c->name);
 231                 for(i = 0; i < nrules; i++)
 232                         if(regs[i].propregex && !regexec(regs[i].propregex, prop, 1, &tmp, 0)) {
 233                                 c->isfloat = rule[i].isfloat;
 234                                 for(j = 0; regs[i].tagregex && j < ntags; j++) {
 235                                         if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {
 236                                                 matched = True;
 237                                                 c->tags[j] = True;
 238                                         }
 239                                 }
 240                         }
 241                 if(ch.res_class)
 242                         XFree(ch.res_class);
 243                 if(ch.res_name)
 244                         XFree(ch.res_name);
 245         }
 246         if(!matched)
 247                 for(i = 0; i < ntags; i++)
 248                         c->tags[i] = seltag[i];
 249 }
 250
 251 void
 252 tag(Arg *arg) {
 253         unsigned int i;
 254
 255         if(!sel)
 256                 return;
 257         for(i = 0; i < ntags; i++)
 258                 sel->tags[i] = (arg->i == -1) ? True : False;
 259         if(arg->i >= 0 && arg->i < ntags)
 260                 sel->tags[arg->i] = True;
 261         lt->arrange();
 262 }
 263
 264 void
 265 togglefloat(Arg *arg) {
 266         if(!sel || lt->arrange == dofloat)
 267                 return;
 268         sel->isfloat = !sel->isfloat;
 269         lt->arrange();
 270 }
 271
 272 void
 273 toggletag(Arg *arg) {
 274         unsigned int i;
 275
 276         if(!sel)
 277                 return;
 278         sel->tags[arg->i] = !sel->tags[arg->i];
 279         for(i = 0; i < ntags && !sel->tags[i]; i++);
 280         if(i == ntags)
 281                 sel->tags[arg->i] = True;
 282         lt->arrange();
 283 }
 284
 285 void
 286 togglelayout(Arg *arg) {
 287         unsigned int i;
 288
 289         for(i = 0; i < nlayouts && lt != &layout[i]; i++);
 290         if(i == nlayouts - 1)
 291                 lt = &layout[0];
 292         else
 293                 lt = &layout[++i];
 294         if(sel)
 295                 lt->arrange();
 296         else
 297                 drawstatus();
 298 }
 299
 300 void
 301 toggleview(Arg *arg) {
 302         unsigned int i;
 303
 304         seltag[arg->i] = !seltag[arg->i];
 305         for(i = 0; i < ntags && !seltag[i]; i++);
 306         if(i == ntags)
 307                 seltag[arg->i] = True; /* cannot toggle last view */
 308         lt->arrange();
 309 }
 310
 311 void
 312 view(Arg *arg) {
 313         unsigned int i;
 314
 315         for(i = 0; i < ntags; i++)
 316                 seltag[i] = (arg->i == -1) ? True : False;
 317         if(arg->i >= 0 && arg->i < ntags)
 318                 seltag[arg->i] = True;
 319         lt->arrange();
 320 }