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);
  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);
 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 > 2) ? sh / (n - 2) : 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;
 136                                 c->h = sh;
 137                         }
 138                         else if(i == 1) {
 139                                 c->x = sx;
 140                                 c->y = sy;
 141                                 c->w = mw;
 142                                 c->h = sh;
 143                         }
 144                         else {
 145                                 c->x = sx + mw;
 146                                 c->y = sy + (i - 2) * h;
 147                                 c->w = w;
 148                                 c->h = h;
 149                         }
 150                         resize(c);
 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         if(sel && sel != c) {
 308                 XSetWindowBorder(dpy, sel->win, dc.bg);
 309                 XMapWindow(dpy, sel->title);
 310                 draw_client(sel);
 311         }
 312         sel = c;
 313         XUnmapWindow(dpy, c->title);
 314         XSetWindowBorder(dpy, c->win, dc.fg);
 315         draw_client(c);
 316         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 317         XFlush(dpy);
 318         discard_events(EnterWindowMask);
 319 }
 320
 321 static void
 322 init_tags(Client *c)
 323 {
 324         XClassHint ch;
 325         static unsigned int len = rule ? sizeof(rule) / sizeof(rule[0]) : 0;
 326         unsigned int i, j;
 327         Bool matched = False;
 328
 329         if(!len) {
 330                 c->tags[tsel] = tags[tsel];
 331                 return;
 332         }
 333
 334         if(XGetClassHint(dpy, c->win, &ch)) {
 335                 if(ch.res_class && ch.res_name) {
 336                         fprintf(stderr, "%s:%s\n", ch.res_class, ch.res_name);
 337                         for(i = 0; i < len; i++)
 338                                 if(!strncmp(rule[i].class, ch.res_class, sizeof(rule[i].class))
 339                                         && !strncmp(rule[i].instance, ch.res_name, sizeof(rule[i].instance)))
 340                                 {
 341                         fprintf(stderr, "->>>%s:%s\n", ch.res_class, ch.res_name);
 342                                         for(j = 0; j < TLast; j++)
 343                                                 c->tags[j] = rule[i].tags[j];
 344                                         matched = True;
 345                                         break;
 346                                 }
 347                 }
 348                 if(ch.res_class)
 349                         XFree(ch.res_class);
 350                 if(ch.res_name)
 351                         XFree(ch.res_name);
 352         }
 353
 354         if(!matched)
 355                 c->tags[tsel] = tags[tsel];
 356 }
 357
 358 void
 359 manage(Window w, XWindowAttributes *wa)
 360 {
 361         Client *c, **l;
 362         XSetWindowAttributes twa;
 363
 364         c = emallocz(sizeof(Client));
 365         c->win = w;
 366         c->tx = c->x = wa->x;
 367         c->ty = c->y = wa->y;
 368         c->tw = c->w = wa->width;
 369         c->h = wa->height;
 370         c->th = th;
 371         c->border = 1;
 372         c->proto = win_proto(c->win);
 373         update_size(c);
 374         XSelectInput(dpy, c->win,
 375                         StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 376         XGetTransientForHint(dpy, c->win, &c->trans);
 377         twa.override_redirect = 1;
 378         twa.background_pixmap = ParentRelative;
 379         twa.event_mask = ExposureMask;
 380
 381         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 382                         0, DefaultDepth(dpy, screen), CopyFromParent,
 383                         DefaultVisual(dpy, screen),
 384                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 385
 386         update_name(c);
 387         init_tags(c);
 388
 389         for(l = &clients; *l; l = &(*l)->next);
 390         c->next = *l; /* *l == nil */
 391         *l = c;
 392
 393         XSetWindowBorderWidth(dpy, c->win, 1);
 394         XMapRaised(dpy, c->win);
 395         XMapRaised(dpy, c->title);
 396         XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 397                         GrabModeAsync, GrabModeSync, None, None);
 398         XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
 399                         GrabModeAsync, GrabModeSync, None, None);
 400         XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 401                         GrabModeAsync, GrabModeSync, None, None);
 402         arrange(NULL);
 403         if(c->tags[tsel])
 404                 focus(c);
 405         else
 406                 ban_client(c);
 407 }
 408
 409 void
 410 gravitate(Client *c, Bool invert)
 411 {
 412         int dx = 0, dy = 0;
 413
 414         switch(c->grav) {
 415         case StaticGravity:
 416         case NorthWestGravity:
 417         case NorthGravity:
 418         case NorthEastGravity:
 419                 dy = c->border;
 420                 break;
 421         case EastGravity:
 422         case CenterGravity:
 423         case WestGravity:
 424                 dy = -(c->h / 2) + c->border;
 425                 break;
 426         case SouthEastGravity:
 427         case SouthGravity:
 428         case SouthWestGravity:
 429                 dy = -c->h;
 430                 break;
 431         default:
 432                 break;
 433         }
 434
 435         switch (c->grav) {
 436         case StaticGravity:
 437         case NorthWestGravity:
 438         case WestGravity:
 439         case SouthWestGravity:
 440                 dx = c->border;
 441                 break;
 442         case NorthGravity:
 443         case CenterGravity:
 444         case SouthGravity:
 445                 dx = -(c->w / 2) + c->border;
 446                 break;
 447         case NorthEastGravity:
 448         case EastGravity:
 449         case SouthEastGravity:
 450                 dx = -(c->w + c->border);
 451                 break;
 452         default:
 453                 break;
 454         }
 455
 456         if(invert) {
 457                 dx = -dx;
 458                 dy = -dy;
 459         }
 460         c->x += dx;
 461         c->y += dy;
 462 }
 463
 464
 465 void
 466 resize(Client *c)
 467 {
 468         XConfigureEvent e;
 469
 470         if(c->incw)
 471                 c->w -= (c->w - c->basew) % c->incw;
 472         if(c->inch)
 473                 c->h -= (c->h - c->baseh) % c->inch;
 474         if(c->minw && c->w < c->minw)
 475                 c->w = c->minw;
 476         if(c->minh && c->h < c->minh)
 477                 c->h = c->minh;
 478         if(c->maxw && c->w > c->maxw)
 479                 c->w = c->maxw;
 480         if(c->maxh && c->h > c->maxh)
 481                 c->h = c->maxh;
 482         resize_title(c);
 483         XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 484         e.type = ConfigureNotify;
 485         e.event = c->win;
 486         e.window = c->win;
 487         e.x = c->x;
 488         e.y = c->y;
 489         e.width = c->w;
 490         e.height = c->h;
 491         e.border_width = c->border;
 492         e.above = None;
 493         e.override_redirect = False;
 494         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 495         XFlush(dpy);
 496 }
 497
 498 static int
 499 dummy_error_handler(Display *dsply, XErrorEvent *err)
 500 {
 501         return 0;
 502 }
 503
 504 void
 505 unmanage(Client *c)
 506 {
 507         Client **l;
 508
 509         XGrabServer(dpy);
 510         XSetErrorHandler(dummy_error_handler);
 511
 512         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 513         XDestroyWindow(dpy, c->title);
 514
 515         for(l = &clients; *l && *l != c; l = &(*l)->next);
 516         *l = c->next;
 517         for(l = &clients; *l; l = &(*l)->next)
 518                 if((*l)->revert == c)
 519                         (*l)->revert = NULL;
 520         if(sel == c)
 521                 sel = sel->revert ? sel->revert : clients;
 522
 523         free(c);
 524
 525         XFlush(dpy);
 526         XSetErrorHandler(error_handler);
 527         XUngrabServer(dpy);
 528         arrange(NULL);
 529         if(sel)
 530                 focus(sel);
 531 }
 532
 533 Client *
 534 gettitle(Window w)
 535 {
 536         Client *c;
 537         for(c = clients; c; c = c->next)
 538                 if(c->title == w)
 539                         return c;
 540         return NULL;
 541 }
 542
 543 Client *
 544 getclient(Window w)
 545 {
 546         Client *c;
 547         for(c = clients; c; c = c->next)
 548                 if(c->win == w)
 549                         return c;
 550         return NULL;
 551 }
 552
 553 void
 554 draw_client(Client *c)
 555 {
 556         int i;
 557         if(c == sel)
 558                 return;
 559
 560         dc.x = dc.y = 0;
 561         dc.h = c->th;
 562
 563         dc.w = 0;
 564         for(i = 0; i < TLast; i++) {
 565                 if(c->tags[i]) {
 566                         dc.x += dc.w;
 567                         dc.w = textw(c->tags[i]) + dc.font.height;
 568                         draw(True, c->tags[i]);
 569                 }
 570         }
 571         dc.x += dc.w;
 572         dc.w = textw(c->name) + dc.font.height;
 573         draw(True, c->name);
 574         XCopyArea(dpy, dc.drawable, c->title, dc.gc,
 575                         0, 0, c->tw, c->th, 0, 0);
 576         XFlush(dpy);
 577 }