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 + bh;
  53         sel->w = sw - 2 * sel->border;
  54         sel->h = sh - 2 * sel->border - bh;
  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         draw_bar();
  71 }
  72
  73 void
  74 tappend(Arg *arg)
  75 {
  76         if(!sel)
  77                 return;
  78
  79         sel->tags[arg->i] = tags[arg->i];
  80         arrange(NULL);
  81 }
  82
  83 void
  84 ttrunc(Arg *arg)
  85 {
  86         int i;
  87         if(!sel)
  88                 return;
  89
  90         for(i = 0; i < TLast; i++)
  91                 sel->tags[i] = NULL;
  92         tappend(arg);
  93 }
  94
  95 static void
  96 ban_client(Client *c)
  97 {
  98         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  99         XMoveWindow(dpy, c->title, c->tx + 2 * sw, c->ty);
 100 }
 101
 102 void
 103 floating(Arg *arg)
 104 {
 105         Client *c;
 106
 107         arrange = floating;
 108         for(c = clients; c; c = c->next) {
 109                 if(c->tags[tsel])
 110                         resize(c, True);
 111                 else
 112                         ban_client(c);
 113         }
 114         if(sel && !sel->tags[tsel]) {
 115                 if((sel = next(clients))) {
 116                         craise(sel);
 117                         focus(sel);
 118                 }
 119         }
 120         discard_events(EnterWindowMask);
 121 }
 122
 123 void
 124 tiling(Arg *arg)
 125 {
 126         Client *c;
 127         int n, i, w, h;
 128
 129         w = sw - mw;
 130         arrange = tiling;
 131         for(n = 0, c = clients; c; c = c->next)
 132                 if(c->tags[tsel] && !c->floating)
 133                         n++;
 134
 135         if(n > 1)
 136                 h = (sh - bh) / (n - 1);
 137         else
 138                 h = sh - bh;
 139
 140         for(i = 0, c = clients; c; c = c->next) {
 141                 if(c->tags[tsel]) {
 142                         if(c->floating) {
 143                                 craise(c);
 144                                 resize(c, True);
 145                                 continue;
 146                         }
 147                         if(n == 1) {
 148                                 c->x = sx;
 149                                 c->y = sy + bh;
 150                                 c->w = sw - 2 * c->border;
 151                                 c->h = sh - 2 * c->border - bh;
 152                         }
 153                         else if(i == 0) {
 154                                 c->x = sx;
 155                                 c->y = sy + bh;
 156                                 c->w = mw - 2 * c->border;
 157                                 c->h = sh - 2 * c->border - bh;
 158                         }
 159                         else {
 160                                 c->x = sx + mw;
 161                                 c->y = sy + (i - 1) * h + bh;
 162                                 c->w = w - 2 * c->border;
 163                                 c->h = h - 2 * c->border;
 164                         }
 165                         resize(c, False);
 166                         i++;
 167                 }
 168                 else
 169                         ban_client(c);
 170         }
 171         if(sel && !sel->tags[tsel]) {
 172                 if((sel = next(clients))) {
 173                         craise(sel);
 174                         focus(sel);
 175                 }
 176         }
 177         discard_events(EnterWindowMask);
 178 }
 179
 180 void
 181 prevc(Arg *arg)
 182 {
 183         Client *c;
 184
 185         if(!sel)
 186                 return;
 187
 188         if((c = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
 189                 craise(c);
 190                 focus(c);
 191         }
 192 }
 193
 194 void
 195 nextc(Arg *arg)
 196 {
 197         Client *c;
 198
 199         if(!sel)
 200                 return;
 201
 202         if(!(c = next(sel->next)))
 203                 c = next(clients);
 204         if(c) {
 205                 craise(c);
 206                 c->revert = sel;
 207                 focus(c);
 208         }
 209 }
 210
 211 void
 212 ckill(Arg *arg)
 213 {
 214         if(!sel)
 215                 return;
 216         if(sel->proto & WM_PROTOCOL_DELWIN)
 217                 send_message(sel->win, wm_atom[WMProtocols], wm_atom[WMDelete]);
 218         else
 219                 XKillClient(dpy, sel->win);
 220 }
 221
 222 static void
 223 resize_title(Client *c)
 224 {
 225         int i;
 226
 227         c->tw = 0;
 228         for(i = 0; i < TLast; i++)
 229                 if(c->tags[i])
 230                         c->tw += textw(c->tags[i]) + dc.font.height;
 231         c->tw += textw(c->name) + dc.font.height;
 232         if(c->tw > c->w)
 233                 c->tw = c->w + 2;
 234         c->tx = c->x + c->w - c->tw + 2;
 235         c->ty = c->y;
 236         XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
 237 }
 238
 239 void
 240 update_name(Client *c)
 241 {
 242         XTextProperty name;
 243         int n;
 244         char **list = NULL;
 245
 246         name.nitems = 0;
 247         c->name[0] = 0;
 248         XGetTextProperty(dpy, c->win, &name, net_atom[NetWMName]);
 249         if(!name.nitems)
 250                 XGetWMName(dpy, c->win, &name);
 251         if(!name.nitems)
 252                 return;
 253         if(name.encoding == XA_STRING)
 254                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 255         else {
 256                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 257                                 && n > 0 && *list)
 258                 {
 259                         strncpy(c->name, *list, sizeof(c->name));
 260                         XFreeStringList(list);
 261                 }
 262         }
 263         XFree(name.value);
 264         resize_title(c);
 265 }
 266
 267 void
 268 update_size(Client *c)
 269 {
 270         XSizeHints size;
 271         long msize;
 272         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 273                 size.flags = PSize;
 274         c->flags = size.flags;
 275         if(c->flags & PBaseSize) {
 276                 c->basew = size.base_width;
 277                 c->baseh = size.base_height;
 278         }
 279         else
 280                 c->basew = c->baseh = 0;
 281         if(c->flags & PResizeInc) {
 282                 c->incw = size.width_inc;
 283                 c->inch = size.height_inc;
 284         }
 285         else
 286                 c->incw = c->inch = 0;
 287         if(c->flags & PMaxSize) {
 288                 c->maxw = size.max_width;
 289                 c->maxh = size.max_height;
 290         }
 291         else
 292                 c->maxw = c->maxh = 0;
 293         if(c->flags & PMinSize) {
 294                 c->minw = size.min_width;
 295                 c->minh = size.min_height;
 296         }
 297         else
 298                 c->minw = c->minh = 0;
 299         if(c->flags & PWinGravity)
 300                 c->grav = size.win_gravity;
 301         else
 302                 c->grav = NorthWestGravity;
 303 }
 304
 305 void
 306 craise(Client *c)
 307 {
 308         XRaiseWindow(dpy, c->win);
 309         XRaiseWindow(dpy, c->title);
 310 }
 311
 312 void
 313 lower(Client *c)
 314 {
 315         XLowerWindow(dpy, c->title);
 316         XLowerWindow(dpy, c->win);
 317 }
 318
 319 void
 320 focus(Client *c)
 321 {
 322         Client *old = sel;
 323
 324         sel = c;
 325         if(old && old != c)
 326                 draw_client(old);
 327         draw_client(c);
 328         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 329         XFlush(dpy);
 330         discard_events(EnterWindowMask);
 331 }
 332
 333 static void
 334 init_tags(Client *c)
 335 {
 336         XClassHint ch;
 337         static unsigned int len = rule ? sizeof(rule) / sizeof(rule[0]) : 0;
 338         unsigned int i, j;
 339         Bool matched = False;
 340
 341         if(!len) {
 342                 c->tags[tsel] = tags[tsel];
 343                 return;
 344         }
 345
 346         if(XGetClassHint(dpy, c->win, &ch)) {
 347                 if(ch.res_class && ch.res_name) {
 348                         for(i = 0; i < len; i++)
 349                                 if(!strncmp(rule[i].class, ch.res_class, sizeof(rule[i].class))
 350                                         && !strncmp(rule[i].instance, ch.res_name, sizeof(rule[i].instance)))
 351                                 {
 352                                         for(j = 0; j < TLast; j++)
 353                                                 c->tags[j] = rule[i].tags[j];
 354                                         c->floating = rule[i].floating;
 355                                         matched = True;
 356                                         break;
 357                                 }
 358                 }
 359                 if(ch.res_class)
 360                         XFree(ch.res_class);
 361                 if(ch.res_name)
 362                         XFree(ch.res_name);
 363         }
 364
 365         if(!matched)
 366                 c->tags[tsel] = tags[tsel];
 367 }
 368
 369 void
 370 manage(Window w, XWindowAttributes *wa)
 371 {
 372         Client *c, **l;
 373         XSetWindowAttributes twa;
 374         Window trans;
 375
 376         c = emallocz(sizeof(Client));
 377         c->win = w;
 378         c->tx = c->x = wa->x;
 379         c->ty = c->y = wa->y;
 380         if(c->y < bh)
 381                 c->ty = c->y += bh;
 382         c->tw = c->w = wa->width;
 383         c->h = wa->height;
 384         c->th = bh;
 385         c->border = 1;
 386         c->proto = win_proto(c->win);
 387         update_size(c);
 388         XSelectInput(dpy, c->win,
 389                         StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 390         XGetTransientForHint(dpy, c->win, &trans);
 391         twa.override_redirect = 1;
 392         twa.background_pixmap = ParentRelative;
 393         twa.event_mask = ExposureMask;
 394
 395         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 396                         0, DefaultDepth(dpy, screen), CopyFromParent,
 397                         DefaultVisual(dpy, screen),
 398                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 399
 400         update_name(c);
 401         init_tags(c);
 402
 403         for(l = &clients; *l; l = &(*l)->next);
 404         c->next = *l; /* *l == nil */
 405         *l = c;
 406
 407         XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 408                         GrabModeAsync, GrabModeSync, None, None);
 409         XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
 410                         GrabModeAsync, GrabModeSync, None, None);
 411         XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 412                         GrabModeAsync, GrabModeSync, None, None);
 413
 414         if(!c->floating)
 415                 c->floating = trans
 416                         || ((c->maxw == c->minw) && (c->maxh == c->minh));
 417
 418         arrange(NULL);
 419         /* mapping the window now prevents flicker */
 420         if(c->tags[tsel]) {
 421                 XMapRaised(dpy, c->win);
 422                 XMapRaised(dpy, c->title);
 423                 focus(c);
 424         }
 425         else {
 426                 ban_client(c);
 427                 XMapRaised(dpy, c->win);
 428                 XMapRaised(dpy, c->title);
 429         }
 430 }
 431
 432 void
 433 gravitate(Client *c, Bool invert)
 434 {
 435         int dx = 0, dy = 0;
 436
 437         switch(c->grav) {
 438         case StaticGravity:
 439         case NorthWestGravity:
 440         case NorthGravity:
 441         case NorthEastGravity:
 442                 dy = c->border;
 443                 break;
 444         case EastGravity:
 445         case CenterGravity:
 446         case WestGravity:
 447                 dy = -(c->h / 2) + c->border;
 448                 break;
 449         case SouthEastGravity:
 450         case SouthGravity:
 451         case SouthWestGravity:
 452                 dy = -c->h;
 453                 break;
 454         default:
 455                 break;
 456         }
 457
 458         switch (c->grav) {
 459         case StaticGravity:
 460         case NorthWestGravity:
 461         case WestGravity:
 462         case SouthWestGravity:
 463                 dx = c->border;
 464                 break;
 465         case NorthGravity:
 466         case CenterGravity:
 467         case SouthGravity:
 468                 dx = -(c->w / 2) + c->border;
 469                 break;
 470         case NorthEastGravity:
 471         case EastGravity:
 472         case SouthEastGravity:
 473                 dx = -(c->w + c->border);
 474                 break;
 475         default:
 476                 break;
 477         }
 478
 479         if(invert) {
 480                 dx = -dx;
 481                 dy = -dy;
 482         }
 483         c->x += dx;
 484         c->y += dy;
 485 }
 486
 487
 488 void
 489 resize(Client *c, Bool inc)
 490 {
 491         XConfigureEvent e;
 492
 493         if(inc) {
 494                 if(c->incw)
 495                         c->w -= (c->w - c->basew) % c->incw;
 496                 if(c->inch)
 497                         c->h -= (c->h - c->baseh) % c->inch;
 498         }
 499         if(c->minw && c->w < c->minw)
 500                 c->w = c->minw;
 501         if(c->minh && c->h < c->minh)
 502                 c->h = c->minh;
 503         if(c->maxw && c->w > c->maxw)
 504                 c->w = c->maxw;
 505         if(c->maxh && c->h > c->maxh)
 506                 c->h = c->maxh;
 507         resize_title(c);
 508         XSetWindowBorderWidth(dpy, c->win, 1);
 509         XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 510         e.type = ConfigureNotify;
 511         e.event = c->win;
 512         e.window = c->win;
 513         e.x = c->x;
 514         e.y = c->y;
 515         e.width = c->w;
 516         e.height = c->h;
 517         e.border_width = c->border;
 518         e.above = None;
 519         e.override_redirect = False;
 520         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 521         XFlush(dpy);
 522 }
 523
 524 static int
 525 dummy_error_handler(Display *dsply, XErrorEvent *err)
 526 {
 527         return 0;
 528 }
 529
 530 void
 531 unmanage(Client *c)
 532 {
 533         Client **l;
 534
 535         XGrabServer(dpy);
 536         XSetErrorHandler(dummy_error_handler);
 537
 538         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 539         XDestroyWindow(dpy, c->title);
 540
 541         for(l = &clients; *l && *l != c; l = &(*l)->next);
 542         *l = c->next;
 543         for(l = &clients; *l; l = &(*l)->next)
 544                 if((*l)->revert == c)
 545                         (*l)->revert = NULL;
 546         if(sel == c)
 547                 sel = sel->revert ? sel->revert : clients;
 548
 549         free(c);
 550
 551         XFlush(dpy);
 552         XSetErrorHandler(error_handler);
 553         XUngrabServer(dpy);
 554         arrange(NULL);
 555         if(sel)
 556                 focus(sel);
 557 }
 558
 559 Client *
 560 gettitle(Window w)
 561 {
 562         Client *c;
 563         for(c = clients; c; c = c->next)
 564                 if(c->title == w)
 565                         return c;
 566         return NULL;
 567 }
 568
 569 Client *
 570 getclient(Window w)
 571 {
 572         Client *c;
 573         for(c = clients; c; c = c->next)
 574                 if(c->win == w)
 575                         return c;
 576         return NULL;
 577 }
 578
 579 void
 580 draw_client(Client *c)
 581 {
 582         int i;
 583         if(c == sel) {
 584                 draw_bar();
 585                 XUnmapWindow(dpy, c->title);
 586                 XSetWindowBorder(dpy, c->win, dc.fg);
 587                 return;
 588         }
 589
 590         XSetWindowBorder(dpy, c->win, dc.bg);
 591         XMapWindow(dpy, c->title);
 592
 593         dc.x = dc.y = 0;
 594
 595         dc.w = 0;
 596         for(i = 0; i < TLast; i++) {
 597                 if(c->tags[i]) {
 598                         dc.x += dc.w;
 599                         dc.w = textw(c->tags[i]) + dc.font.height;
 600                         drawtext(c->tags[i], True);
 601                 }
 602         }
 603         dc.x += dc.w;
 604         dc.w = textw(c->name) + dc.font.height;
 605         drawtext(c->name, True);
 606         XCopyArea(dpy, dc.drawable, c->title, dc.gc,
 607                         0, 0, c->tw, c->th, 0, 0);
 608         XFlush(dpy);
 609 }