client.c

   1 /*
   2  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
   3  * See LICENSE file for license details.
   4  */
   5
   6 #include <stdlib.h>
   7 #include <stdio.h>
   8 #include <string.h>
   9 #include <X11/Xatom.h>
  10 #include <X11/Xutil.h>
  11
  12 #include "dwm.h"
  13
  14 static void (*arrange)(Arg *) = tiling;
  15
  16 static Rule rule[] = {
  17         { "Firefox-bin", "Gecko", { [Twww] = "www" } },
  18 };
  19
  20 static Client *
  21 next(Client *c)
  22 {
  23         for(; c && !c->tags[tsel]; c = c->next);
  24         return c;
  25 }
  26
  27 void
  28 zoom(Arg *arg)
  29 {
  30         Client **l, *old;
  31
  32         if(!(old = sel))
  33                 return;
  34
  35         for(l = &clients; *l && *l != sel; l = &(*l)->next);
  36         *l = sel->next;
  37
  38         old->next = clients; /* pop */
  39         clients = old;
  40         sel = old;
  41         arrange(NULL);
  42         focus(sel);
  43 }
  44
  45 void
  46 max(Arg *arg)
  47 {
  48         if(!sel)
  49                 return;
  50         sel->x = sx;
  51         sel->y = sy;
  52         sel->w = sw - 2 * sel->border;
  53         sel->h = sh - 2 * sel->border;
  54         craise(sel);
  55         resize(sel, False);
  56         discard_events(EnterWindowMask);
  57 }
  58
  59 void
  60 view(Arg *arg)
  61 {
  62         tsel = arg->i;
  63         arrange(NULL);
  64 }
  65
  66 void
  67 tag(Arg *arg)
  68 {
  69         int i, n;
  70         if(!sel)
  71                 return;
  72
  73         if(arg->i == tsel) {
  74                 for(n = i = 0; i < TLast; i++)
  75                         if(sel->tags[i])
  76                                 n++;
  77                 if(n < 2)
  78                         return;
  79         }
  80
  81         if(sel->tags[arg->i])
  82                 sel->tags[arg->i] = NULL; /* toggle tag */
  83         else
  84                 sel->tags[arg->i] = tags[arg->i];
  85         arrange(NULL);
  86 }
  87
  88 static void
  89 ban_client(Client *c)
  90 {
  91         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  92         XMoveWindow(dpy, c->title, c->tx + 2 * sw, c->ty);
  93 }
  94
  95 void
  96 floating(Arg *arg)
  97 {
  98         Client *c;
  99
 100         arrange = floating;
 101         for(c = clients; c; c = c->next) {
 102                 if(c->tags[tsel])
 103                         resize(c, True);
 104                 else
 105                         ban_client(c);
 106         }
 107         if(sel && !sel->tags[tsel]) {
 108                 if((sel = next(clients))) {
 109                         craise(sel);
 110                         focus(sel);
 111                 }
 112         }
 113         discard_events(EnterWindowMask);
 114 }
 115
 116 void
 117 tiling(Arg *arg)
 118 {
 119         Client *c;
 120         int n, i, w, h;
 121
 122         w = sw - mw;
 123         arrange = tiling;
 124         for(n = 0, c = clients; c; c = c->next)
 125                 if(c->tags[tsel])
 126                         n++;
 127
 128         h = (n > 1) ? sh / (n - 1) : sh;
 129
 130         for(i = 0, c = clients; c; c = c->next) {
 131                 if(c->tags[tsel]) {
 132                         if(n == 1) {
 133                                 c->x = sx;
 134                                 c->y = sy;
 135                                 c->w = sw - 2 * c->border;
 136                                 c->h = sh - 2 * c->border;
 137                         }
 138                         else if(i == 0) {
 139                                 c->x = sx;
 140                                 c->y = sy;
 141                                 c->w = mw - 2 * c->border;
 142                                 c->h = sh - 2 * c->border;
 143                         }
 144                         else {
 145                                 c->x = sx + mw;
 146                                 c->y = sy + (i - 1) * h;
 147                                 c->w = w - 2 * c->border;
 148                                 c->h = h - 2 * c->border;
 149                         }
 150                         resize(c, False);
 151                         i++;
 152                 }
 153                 else
 154                         ban_client(c);
 155         }
 156         if(sel && !sel->tags[tsel]) {
 157                 if((sel = next(clients))) {
 158                         craise(sel);
 159                         focus(sel);
 160                 }
 161         }
 162         discard_events(EnterWindowMask);
 163 }
 164
 165 void
 166 prevc(Arg *arg)
 167 {
 168         Client *c;
 169
 170         if(!sel)
 171                 return;
 172
 173         if((c = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
 174                 craise(c);
 175                 focus(c);
 176         }
 177 }
 178
 179 void
 180 nextc(Arg *arg)
 181 {
 182         Client *c;
 183
 184         if(!sel)
 185                 return;
 186
 187         if(!(c = next(sel->next)))
 188                 c = next(clients);
 189         if(c) {
 190                 craise(c);
 191                 c->revert = sel;
 192                 focus(c);
 193         }
 194 }
 195
 196 void
 197 ckill(Arg *arg)
 198 {
 199         if(!sel)
 200                 return;
 201         if(sel->proto & WM_PROTOCOL_DELWIN)
 202                 send_message(sel->win, wm_atom[WMProtocols], wm_atom[WMDelete]);
 203         else
 204                 XKillClient(dpy, sel->win);
 205 }
 206
 207 static void
 208 resize_title(Client *c)
 209 {
 210         int i;
 211
 212         c->tw = 0;
 213         for(i = 0; i < TLast; i++)
 214                 if(c->tags[i])
 215                         c->tw += textw(c->tags[i]) + dc.font.height;
 216         c->tw += textw(c->name) + dc.font.height;
 217         if(c->tw > c->w)
 218                 c->tw = c->w + 2;
 219         c->tx = c->x + c->w - c->tw + 2;
 220         c->ty = c->y;
 221         XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
 222 }
 223
 224 void
 225 update_name(Client *c)
 226 {
 227         XTextProperty name;
 228         int n;
 229         char **list = NULL;
 230
 231         name.nitems = 0;
 232         c->name[0] = 0;
 233         XGetTextProperty(dpy, c->win, &name, net_atom[NetWMName]);
 234         if(!name.nitems)
 235                 XGetWMName(dpy, c->win, &name);
 236         if(!name.nitems)
 237                 return;
 238         if(name.encoding == XA_STRING)
 239                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 240         else {
 241                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 242                                 && n > 0 && *list)
 243                 {
 244                         strncpy(c->name, *list, sizeof(c->name));
 245                         XFreeStringList(list);
 246                 }
 247         }
 248         XFree(name.value);
 249         resize_title(c);
 250 }
 251
 252 void
 253 update_size(Client *c)
 254 {
 255         XSizeHints size;
 256         long msize;
 257         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 258                 size.flags = PSize;
 259         c->flags = size.flags;
 260         if(c->flags & PBaseSize) {
 261                 c->basew = size.base_width;
 262                 c->baseh = size.base_height;
 263         }
 264         else
 265                 c->basew = c->baseh = 0;
 266         if(c->flags & PResizeInc) {
 267                 c->incw = size.width_inc;
 268                 c->inch = size.height_inc;
 269         }
 270         else
 271                 c->incw = c->inch = 0;
 272         if(c->flags & PMaxSize) {
 273                 c->maxw = size.max_width;
 274                 c->maxh = size.max_height;
 275         }
 276         else
 277                 c->maxw = c->maxh = 0;
 278         if(c->flags & PMinSize) {
 279                 c->minw = size.min_width;
 280                 c->minh = size.min_height;
 281         }
 282         else
 283                 c->minw = c->minh = 0;
 284         if(c->flags & PWinGravity)
 285                 c->grav = size.win_gravity;
 286         else
 287                 c->grav = NorthWestGravity;
 288 }
 289
 290 void
 291 craise(Client *c)
 292 {
 293         XRaiseWindow(dpy, c->win);
 294         XRaiseWindow(dpy, c->title);
 295 }
 296
 297 void
 298 lower(Client *c)
 299 {
 300         XLowerWindow(dpy, c->title);
 301         XLowerWindow(dpy, c->win);
 302 }
 303
 304 void
 305 focus(Client *c)
 306 {
 307         Client *old = sel;
 308
 309         sel = c;
 310         if(old && old != c)
 311                 draw_client(old);
 312         draw_client(c);
 313         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 314         XFlush(dpy);
 315         discard_events(EnterWindowMask);
 316 }
 317
 318 static void
 319 init_tags(Client *c)
 320 {
 321         XClassHint ch;
 322         static unsigned int len = rule ? sizeof(rule) / sizeof(rule[0]) : 0;
 323         unsigned int i, j;
 324         Bool matched = False;
 325
 326         if(!len) {
 327                 c->tags[tsel] = tags[tsel];
 328                 return;
 329         }
 330
 331         if(XGetClassHint(dpy, c->win, &ch)) {
 332                 if(ch.res_class && ch.res_name) {
 333                         fprintf(stderr, "%s:%s\n", ch.res_class, ch.res_name);
 334                         for(i = 0; i < len; i++)
 335                                 if(!strncmp(rule[i].class, ch.res_class, sizeof(rule[i].class))
 336                                         && !strncmp(rule[i].instance, ch.res_name, sizeof(rule[i].instance)))
 337                                 {
 338                         fprintf(stderr, "->>>%s:%s\n", ch.res_class, ch.res_name);
 339                                         for(j = 0; j < TLast; j++)
 340                                                 c->tags[j] = rule[i].tags[j];
 341                                         matched = True;
 342                                         break;
 343                                 }
 344                 }
 345                 if(ch.res_class)
 346                         XFree(ch.res_class);
 347                 if(ch.res_name)
 348                         XFree(ch.res_name);
 349         }
 350
 351         if(!matched)
 352                 c->tags[tsel] = tags[tsel];
 353 }
 354
 355 void
 356 manage(Window w, XWindowAttributes *wa)
 357 {
 358         Client *c, **l;
 359         XSetWindowAttributes twa;
 360
 361         c = emallocz(sizeof(Client));
 362         c->win = w;
 363         c->tx = c->x = wa->x;
 364         c->ty = c->y = wa->y;
 365         c->tw = c->w = wa->width;
 366         c->h = wa->height;
 367         c->th = th;
 368         c->border = 1;
 369         c->proto = win_proto(c->win);
 370         update_size(c);
 371         XSelectInput(dpy, c->win,
 372                         StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 373         XGetTransientForHint(dpy, c->win, &c->trans);
 374         twa.override_redirect = 1;
 375         twa.background_pixmap = ParentRelative;
 376         twa.event_mask = ExposureMask;
 377
 378         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 379                         0, DefaultDepth(dpy, screen), CopyFromParent,
 380                         DefaultVisual(dpy, screen),
 381                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 382
 383         update_name(c);
 384         init_tags(c);
 385
 386         for(l = &clients; *l; l = &(*l)->next);
 387         c->next = *l; /* *l == nil */
 388         *l = c;
 389
 390         XSetWindowBorderWidth(dpy, c->win, 1);
 391         XMapRaised(dpy, c->win);
 392         XMapRaised(dpy, c->title);
 393         XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 394                         GrabModeAsync, GrabModeSync, None, None);
 395         XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
 396                         GrabModeAsync, GrabModeSync, None, None);
 397         XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 398                         GrabModeAsync, GrabModeSync, None, None);
 399         arrange(NULL);
 400         if(c->tags[tsel])
 401                 focus(c);
 402         else
 403                 ban_client(c);
 404 }
 405
 406 void
 407 gravitate(Client *c, Bool invert)
 408 {
 409         int dx = 0, dy = 0;
 410
 411         switch(c->grav) {
 412         case StaticGravity:
 413         case NorthWestGravity:
 414         case NorthGravity:
 415         case NorthEastGravity:
 416                 dy = c->border;
 417                 break;
 418         case EastGravity:
 419         case CenterGravity:
 420         case WestGravity:
 421                 dy = -(c->h / 2) + c->border;
 422                 break;
 423         case SouthEastGravity:
 424         case SouthGravity:
 425         case SouthWestGravity:
 426                 dy = -c->h;
 427                 break;
 428         default:
 429                 break;
 430         }
 431
 432         switch (c->grav) {
 433         case StaticGravity:
 434         case NorthWestGravity:
 435         case WestGravity:
 436         case SouthWestGravity:
 437                 dx = c->border;
 438                 break;
 439         case NorthGravity:
 440         case CenterGravity:
 441         case SouthGravity:
 442                 dx = -(c->w / 2) + c->border;
 443                 break;
 444         case NorthEastGravity:
 445         case EastGravity:
 446         case SouthEastGravity:
 447                 dx = -(c->w + c->border);
 448                 break;
 449         default:
 450                 break;
 451         }
 452
 453         if(invert) {
 454                 dx = -dx;
 455                 dy = -dy;
 456         }
 457         c->x += dx;
 458         c->y += dy;
 459 }
 460
 461
 462 void
 463 resize(Client *c, Bool inc)
 464 {
 465         XConfigureEvent e;
 466
 467         if(inc) {
 468                 if(c->incw)
 469                         c->w -= (c->w - c->basew) % c->incw;
 470                 if(c->inch)
 471                         c->h -= (c->h - c->baseh) % c->inch;
 472         }
 473         if(c->minw && c->w < c->minw)
 474                 c->w = c->minw;
 475         if(c->minh && c->h < c->minh)
 476                 c->h = c->minh;
 477         if(c->maxw && c->w > c->maxw)
 478                 c->w = c->maxw;
 479         if(c->maxh && c->h > c->maxh)
 480                 c->h = c->maxh;
 481         resize_title(c);
 482         XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 483         e.type = ConfigureNotify;
 484         e.event = c->win;
 485         e.window = c->win;
 486         e.x = c->x;
 487         e.y = c->y;
 488         e.width = c->w;
 489         e.height = c->h;
 490         e.border_width = c->border;
 491         e.above = None;
 492         e.override_redirect = False;
 493         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 494         XFlush(dpy);
 495 }
 496
 497 static int
 498 dummy_error_handler(Display *dsply, XErrorEvent *err)
 499 {
 500         return 0;
 501 }
 502
 503 void
 504 unmanage(Client *c)
 505 {
 506         Client **l;
 507
 508         XGrabServer(dpy);
 509         XSetErrorHandler(dummy_error_handler);
 510
 511         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 512         XDestroyWindow(dpy, c->title);
 513
 514         for(l = &clients; *l && *l != c; l = &(*l)->next);
 515         *l = c->next;
 516         for(l = &clients; *l; l = &(*l)->next)
 517                 if((*l)->revert == c)
 518                         (*l)->revert = NULL;
 519         if(sel == c)
 520                 sel = sel->revert ? sel->revert : clients;
 521
 522         free(c);
 523
 524         XFlush(dpy);
 525         XSetErrorHandler(error_handler);
 526         XUngrabServer(dpy);
 527         arrange(NULL);
 528         if(sel)
 529                 focus(sel);
 530 }
 531
 532 Client *
 533 gettitle(Window w)
 534 {
 535         Client *c;
 536         for(c = clients; c; c = c->next)
 537                 if(c->title == w)
 538                         return c;
 539         return NULL;
 540 }
 541
 542 Client *
 543 getclient(Window w)
 544 {
 545         Client *c;
 546         for(c = clients; c; c = c->next)
 547                 if(c->win == w)
 548                         return c;
 549         return NULL;
 550 }
 551
 552 void
 553 draw_client(Client *c)
 554 {
 555         int i;
 556         if(c == sel) {
 557                 XUnmapWindow(dpy, c->title);
 558                 XSetWindowBorder(dpy, c->win, dc.fg);
 559                 return;
 560         }
 561
 562         XSetWindowBorder(dpy, c->win, dc.bg);
 563         XMapWindow(dpy, c->title);
 564
 565         dc.x = dc.y = 0;
 566         dc.h = c->th;
 567
 568         dc.w = 0;
 569         for(i = 0; i < TLast; i++) {
 570                 if(c->tags[i]) {
 571                         dc.x += dc.w;
 572                         dc.w = textw(c->tags[i]) + dc.font.height;
 573                         draw(True, c->tags[i]);
 574                 }
 575         }
 576         dc.x += dc.w;
 577         dc.w = textw(c->name) + dc.font.height;
 578         draw(True, c->name);
 579         XCopyArea(dpy, dc.drawable, c->title, dc.gc,
 580                         0, 0, c->tw, c->th, 0, 0);
 581         XFlush(dpy);
 582 }