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 void (*arrange)(Arg *) = tiling;
  15
  16 static Rule rule[] = {
  17         /* class                        instance        tags                                            floating */
  18         { "Firefox-bin",        "Gecko",        { [Twww] = "www" },                     False },
  19 };
  20
  21 static Client *
  22 next(Client *c)
  23 {
  24         for(; c && !c->tags[tsel]; c = c->next);
  25         return c;
  26 }
  27
  28 void
  29 zoom(Arg *arg)
  30 {
  31         Client **l, *old;
  32
  33         if(!(old = sel))
  34                 return;
  35
  36         for(l = &clients; *l && *l != sel; l = &(*l)->next);
  37         *l = sel->next;
  38
  39         old->next = clients; /* pop */
  40         clients = old;
  41         sel = old;
  42         arrange(NULL);
  43         focus(sel);
  44 }
  45
  46 void
  47 max(Arg *arg)
  48 {
  49         if(!sel)
  50                 return;
  51         sel->x = sx;
  52         sel->y = sy;
  53         sel->w = sw - 2 * sel->border;
  54         sel->h = sh - 2 * sel->border;
  55         craise(sel);
  56         resize(sel, False);
  57         discard_events(EnterWindowMask);
  58 }
  59
  60 void
  61 view(Arg *arg)
  62 {
  63         Client *c;
  64
  65         tsel = arg->i;
  66         arrange(NULL);
  67
  68         for(c = clients; c; c = next(c->next))
  69                 draw_client(c);
  70 }
  71
  72 void
  73 tappend(Arg *arg)
  74 {
  75         if(!sel)
  76                 return;
  77
  78         sel->tags[arg->i] = tags[arg->i];
  79         arrange(NULL);
  80 }
  81
  82 void
  83 ttrunc(Arg *arg)
  84 {
  85         int i;
  86         if(!sel)
  87                 return;
  88
  89         for(i = 0; i < TLast; i++)
  90                 sel->tags[i] = NULL;
  91         tappend(arg);
  92 }
  93
  94 static void
  95 ban_client(Client *c)
  96 {
  97         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  98         XMoveWindow(dpy, c->title, c->tx + 2 * sw, c->ty);
  99 }
 100
 101 void
 102 floating(Arg *arg)
 103 {
 104         Client *c;
 105
 106         arrange = floating;
 107         for(c = clients; c; c = c->next) {
 108                 if(c->tags[tsel])
 109                         resize(c, True);
 110                 else
 111                         ban_client(c);
 112         }
 113         if(sel && !sel->tags[tsel]) {
 114                 if((sel = next(clients))) {
 115                         craise(sel);
 116                         focus(sel);
 117                 }
 118         }
 119         discard_events(EnterWindowMask);
 120 }
 121
 122 void
 123 tiling(Arg *arg)
 124 {
 125         Client *c;
 126         int n, i, w, h;
 127
 128         w = sw - mw;
 129         arrange = tiling;
 130         for(n = 0, c = clients; c; c = c->next)
 131                 if(c->tags[tsel] && !c->floating)
 132                         n++;
 133
 134         h = (n > 1) ? sh / (n - 1) : sh;
 135
 136         for(i = 0, c = clients; c; c = c->next) {
 137                 if(c->tags[tsel]) {
 138                         if(c->floating) {
 139                                 craise(c);
 140                                 resize(c, True);
 141                                 continue;
 142                         }
 143                         if(n == 1) {
 144                                 c->x = sx;
 145                                 c->y = sy;
 146                                 c->w = sw - 2 * c->border;
 147                                 c->h = sh - 2 * c->border;
 148                         }
 149                         else if(i == 0) {
 150                                 c->x = sx;
 151                                 c->y = sy;
 152                                 c->w = mw - 2 * c->border;
 153                                 c->h = sh - 2 * c->border;
 154                         }
 155                         else {
 156                                 c->x = sx + mw;
 157                                 c->y = sy + (i - 1) * h;
 158                                 c->w = w - 2 * c->border;
 159                                 c->h = h - 2 * c->border;
 160                         }
 161                         resize(c, False);
 162                         i++;
 163                 }
 164                 else
 165                         ban_client(c);
 166         }
 167         if(sel && !sel->tags[tsel]) {
 168                 if((sel = next(clients))) {
 169                         craise(sel);
 170                         focus(sel);
 171                 }
 172         }
 173         discard_events(EnterWindowMask);
 174 }
 175
 176 void
 177 prevc(Arg *arg)
 178 {
 179         Client *c;
 180
 181         if(!sel)
 182                 return;
 183
 184         if((c = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
 185                 craise(c);
 186                 focus(c);
 187         }
 188 }
 189
 190 void
 191 nextc(Arg *arg)
 192 {
 193         Client *c;
 194
 195         if(!sel)
 196                 return;
 197
 198         if(!(c = next(sel->next)))
 199                 c = next(clients);
 200         if(c) {
 201                 craise(c);
 202                 c->revert = sel;
 203                 focus(c);
 204         }
 205 }
 206
 207 void
 208 ckill(Arg *arg)
 209 {
 210         if(!sel)
 211                 return;
 212         if(sel->proto & WM_PROTOCOL_DELWIN)
 213                 send_message(sel->win, wm_atom[WMProtocols], wm_atom[WMDelete]);
 214         else
 215                 XKillClient(dpy, sel->win);
 216 }
 217
 218 static void
 219 resize_title(Client *c)
 220 {
 221         int i;
 222
 223         c->tw = 0;
 224         for(i = 0; i < TLast; i++)
 225                 if(c->tags[i])
 226                         c->tw += textw(c->tags[i]) + dc.font.height;
 227         c->tw += textw(c->name) + dc.font.height;
 228         if(c->tw > c->w)
 229                 c->tw = c->w + 2;
 230         c->tx = c->x + c->w - c->tw + 2;
 231         c->ty = c->y;
 232         XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
 233 }
 234
 235 void
 236 update_name(Client *c)
 237 {
 238         XTextProperty name;
 239         int n;
 240         char **list = NULL;
 241
 242         name.nitems = 0;
 243         c->name[0] = 0;
 244         XGetTextProperty(dpy, c->win, &name, net_atom[NetWMName]);
 245         if(!name.nitems)
 246                 XGetWMName(dpy, c->win, &name);
 247         if(!name.nitems)
 248                 return;
 249         if(name.encoding == XA_STRING)
 250                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 251         else {
 252                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 253                                 && n > 0 && *list)
 254                 {
 255                         strncpy(c->name, *list, sizeof(c->name));
 256                         XFreeStringList(list);
 257                 }
 258         }
 259         XFree(name.value);
 260         resize_title(c);
 261 }
 262
 263 void
 264 update_size(Client *c)
 265 {
 266         XSizeHints size;
 267         long msize;
 268         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 269                 size.flags = PSize;
 270         c->flags = size.flags;
 271         if(c->flags & PBaseSize) {
 272                 c->basew = size.base_width;
 273                 c->baseh = size.base_height;
 274         }
 275         else
 276                 c->basew = c->baseh = 0;
 277         if(c->flags & PResizeInc) {
 278                 c->incw = size.width_inc;
 279                 c->inch = size.height_inc;
 280         }
 281         else
 282                 c->incw = c->inch = 0;
 283         if(c->flags & PMaxSize) {
 284                 c->maxw = size.max_width;
 285                 c->maxh = size.max_height;
 286         }
 287         else
 288                 c->maxw = c->maxh = 0;
 289         if(c->flags & PMinSize) {
 290                 c->minw = size.min_width;
 291                 c->minh = size.min_height;
 292         }
 293         else
 294                 c->minw = c->minh = 0;
 295         if(c->flags & PWinGravity)
 296                 c->grav = size.win_gravity;
 297         else
 298                 c->grav = NorthWestGravity;
 299 }
 300
 301 void
 302 craise(Client *c)
 303 {
 304         XRaiseWindow(dpy, c->win);
 305         XRaiseWindow(dpy, c->title);
 306 }
 307
 308 void
 309 lower(Client *c)
 310 {
 311         XLowerWindow(dpy, c->title);
 312         XLowerWindow(dpy, c->win);
 313 }
 314
 315 void
 316 focus(Client *c)
 317 {
 318         Client *old = sel;
 319
 320         sel = c;
 321         if(old && old != c)
 322                 draw_client(old);
 323         draw_client(c);
 324         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 325         XFlush(dpy);
 326         discard_events(EnterWindowMask);
 327 }
 328
 329 static void
 330 init_tags(Client *c)
 331 {
 332         XClassHint ch;
 333         static unsigned int len = rule ? sizeof(rule) / sizeof(rule[0]) : 0;
 334         unsigned int i, j;
 335         Bool matched = False;
 336
 337         if(!len) {
 338                 c->tags[tsel] = tags[tsel];
 339                 return;
 340         }
 341
 342         if(XGetClassHint(dpy, c->win, &ch)) {
 343                 if(ch.res_class && ch.res_name) {
 344                         for(i = 0; i < len; i++)
 345                                 if(!strncmp(rule[i].class, ch.res_class, sizeof(rule[i].class))
 346                                         && !strncmp(rule[i].instance, ch.res_name, sizeof(rule[i].instance)))
 347                                 {
 348                                         for(j = 0; j < TLast; j++)
 349                                                 c->tags[j] = rule[i].tags[j];
 350                                         c->floating = rule[i].floating;
 351                                         matched = True;
 352                                         break;
 353                                 }
 354                 }
 355                 if(ch.res_class)
 356                         XFree(ch.res_class);
 357                 if(ch.res_name)
 358                         XFree(ch.res_name);
 359         }
 360
 361         if(!matched)
 362                 c->tags[tsel] = tags[tsel];
 363 }
 364
 365 void
 366 manage(Window w, XWindowAttributes *wa)
 367 {
 368         Client *c, **l;
 369         XSetWindowAttributes twa;
 370         Window trans;
 371
 372         c = emallocz(sizeof(Client));
 373         c->win = w;
 374         c->tx = c->x = wa->x;
 375         c->ty = c->y = wa->y;
 376         c->tw = c->w = wa->width;
 377         c->h = wa->height;
 378         c->th = th;
 379         c->border = 1;
 380         c->proto = win_proto(c->win);
 381         update_size(c);
 382         XSelectInput(dpy, c->win,
 383                         StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 384         XGetTransientForHint(dpy, c->win, &trans);
 385         twa.override_redirect = 1;
 386         twa.background_pixmap = ParentRelative;
 387         twa.event_mask = ExposureMask;
 388
 389         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 390                         0, DefaultDepth(dpy, screen), CopyFromParent,
 391                         DefaultVisual(dpy, screen),
 392                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 393
 394         update_name(c);
 395         init_tags(c);
 396
 397         for(l = &clients; *l; l = &(*l)->next);
 398         c->next = *l; /* *l == nil */
 399         *l = c;
 400
 401         XMapRaised(dpy, c->win);
 402         XMapRaised(dpy, c->title);
 403         XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 404                         GrabModeAsync, GrabModeSync, None, None);
 405         XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
 406                         GrabModeAsync, GrabModeSync, None, None);
 407         XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 408                         GrabModeAsync, GrabModeSync, None, None);
 409
 410         if(!c->floating)
 411                 c->floating = trans
 412                         || ((c->maxw == c->minw) && (c->maxh == c->minh));
 413
 414         arrange(NULL);
 415         if(c->tags[tsel])
 416                 focus(c);
 417         else
 418                 ban_client(c);
 419 }
 420
 421 void
 422 gravitate(Client *c, Bool invert)
 423 {
 424         int dx = 0, dy = 0;
 425
 426         switch(c->grav) {
 427         case StaticGravity:
 428         case NorthWestGravity:
 429         case NorthGravity:
 430         case NorthEastGravity:
 431                 dy = c->border;
 432                 break;
 433         case EastGravity:
 434         case CenterGravity:
 435         case WestGravity:
 436                 dy = -(c->h / 2) + c->border;
 437                 break;
 438         case SouthEastGravity:
 439         case SouthGravity:
 440         case SouthWestGravity:
 441                 dy = -c->h;
 442                 break;
 443         default:
 444                 break;
 445         }
 446
 447         switch (c->grav) {
 448         case StaticGravity:
 449         case NorthWestGravity:
 450         case WestGravity:
 451         case SouthWestGravity:
 452                 dx = c->border;
 453                 break;
 454         case NorthGravity:
 455         case CenterGravity:
 456         case SouthGravity:
 457                 dx = -(c->w / 2) + c->border;
 458                 break;
 459         case NorthEastGravity:
 460         case EastGravity:
 461         case SouthEastGravity:
 462                 dx = -(c->w + c->border);
 463                 break;
 464         default:
 465                 break;
 466         }
 467
 468         if(invert) {
 469                 dx = -dx;
 470                 dy = -dy;
 471         }
 472         c->x += dx;
 473         c->y += dy;
 474 }
 475
 476
 477 void
 478 resize(Client *c, Bool inc)
 479 {
 480         XConfigureEvent e;
 481
 482         if(inc) {
 483                 if(c->incw)
 484                         c->w -= (c->w - c->basew) % c->incw;
 485                 if(c->inch)
 486                         c->h -= (c->h - c->baseh) % c->inch;
 487         }
 488         if(c->minw && c->w < c->minw)
 489                 c->w = c->minw;
 490         if(c->minh && c->h < c->minh)
 491                 c->h = c->minh;
 492         if(c->maxw && c->w > c->maxw)
 493                 c->w = c->maxw;
 494         if(c->maxh && c->h > c->maxh)
 495                 c->h = c->maxh;
 496         resize_title(c);
 497         XSetWindowBorderWidth(dpy, c->win, 1);
 498         XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 499         e.type = ConfigureNotify;
 500         e.event = c->win;
 501         e.window = c->win;
 502         e.x = c->x;
 503         e.y = c->y;
 504         e.width = c->w;
 505         e.height = c->h;
 506         e.border_width = c->border;
 507         e.above = None;
 508         e.override_redirect = False;
 509         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 510         XFlush(dpy);
 511 }
 512
 513 static int
 514 dummy_error_handler(Display *dsply, XErrorEvent *err)
 515 {
 516         return 0;
 517 }
 518
 519 void
 520 unmanage(Client *c)
 521 {
 522         Client **l;
 523
 524         XGrabServer(dpy);
 525         XSetErrorHandler(dummy_error_handler);
 526
 527         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 528         XDestroyWindow(dpy, c->title);
 529
 530         for(l = &clients; *l && *l != c; l = &(*l)->next);
 531         *l = c->next;
 532         for(l = &clients; *l; l = &(*l)->next)
 533                 if((*l)->revert == c)
 534                         (*l)->revert = NULL;
 535         if(sel == c)
 536                 sel = sel->revert ? sel->revert : clients;
 537
 538         free(c);
 539
 540         XFlush(dpy);
 541         XSetErrorHandler(error_handler);
 542         XUngrabServer(dpy);
 543         arrange(NULL);
 544         if(sel)
 545                 focus(sel);
 546 }
 547
 548 Client *
 549 gettitle(Window w)
 550 {
 551         Client *c;
 552         for(c = clients; c; c = c->next)
 553                 if(c->title == w)
 554                         return c;
 555         return NULL;
 556 }
 557
 558 Client *
 559 getclient(Window w)
 560 {
 561         Client *c;
 562         for(c = clients; c; c = c->next)
 563                 if(c->win == w)
 564                         return c;
 565         return NULL;
 566 }
 567
 568 void
 569 draw_client(Client *c)
 570 {
 571         int i;
 572         if(c == sel) {
 573                 XUnmapWindow(dpy, c->title);
 574                 XSetWindowBorder(dpy, c->win, dc.fg);
 575                 return;
 576         }
 577
 578         XSetWindowBorder(dpy, c->win, dc.bg);
 579         XMapWindow(dpy, c->title);
 580
 581         dc.x = dc.y = 0;
 582         dc.h = c->th;
 583
 584         dc.w = 0;
 585         for(i = 0; i < TLast; i++) {
 586                 if(c->tags[i]) {
 587                         dc.x += dc.w;
 588                         dc.w = textw(c->tags[i]) + dc.font.height;
 589                         draw(True, c->tags[i]);
 590                 }
 591         }
 592         dc.x += dc.w;
 593         dc.w = textw(c->name) + dc.font.height;
 594         draw(True, c->name);
 595         XCopyArea(dpy, dc.drawable, c->title, dc.gc,
 596                         0, 0, c->tw, c->th, 0, 0);
 597         XFlush(dpy);
 598 }