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 <math.h>
   7 #include <stdlib.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 *) = floating;
  15
  16 static void
  17 center(Client *c)
  18 {
  19         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w / 2, c->h / 2);
  20 }
  21
  22 static Client *
  23 next(Client *c)
  24 {
  25         for(; c && !c->tags[tsel]; c = c->next);
  26         return c;
  27 }
  28
  29 void
  30 zoom(Arg *arg)
  31 {
  32         Client **l;
  33
  34         if(!sel)
  35                 return;
  36
  37         for(l = &clients; *l && *l != sel; l = &(*l)->next);
  38         *l = sel->next;
  39
  40         sel->next = clients; /* pop */
  41         clients = sel;
  42         arrange(NULL);
  43         center(sel);
  44         focus(sel);
  45 }
  46
  47 void
  48 max(Arg *arg)
  49 {
  50         if(!sel)
  51                 return;
  52         sel->x = sx;
  53         sel->y = sy;
  54         sel->w = sw - 2 * sel->border;
  55         sel->h = sh - 2 * sel->border;
  56         craise(sel);
  57         resize(sel);
  58         discard_events(EnterWindowMask);
  59 }
  60
  61 void
  62 view(Arg *arg)
  63 {
  64         tsel = arg->i;
  65         arrange(NULL);
  66 }
  67
  68 void
  69 tag(Arg *arg)
  70 {
  71         int i, n;
  72         if(!sel)
  73                 return;
  74
  75         if(arg->i == tsel) {
  76                 for(n = i = 0; i < TLast; i++)
  77                         if(sel->tags[i])
  78                                 n++;
  79                 if(n < 2)
  80                         return;
  81         }
  82
  83         if(sel->tags[arg->i])
  84                 sel->tags[arg->i] = NULL; /* toggle tag */
  85         else
  86                 sel->tags[arg->i] = tags[arg->i];
  87         arrange(NULL);
  88 }
  89
  90 static void
  91 ban_client(Client *c)
  92 {
  93         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  94         XMoveWindow(dpy, c->title, c->tx + 2 * sw, c->ty);
  95 }
  96
  97 void
  98 floating(Arg *arg)
  99 {
 100         Client *c;
 101
 102         arrange = floating;
 103         for(c = clients; c; c = c->next) {
 104                 if(c->tags[tsel])
 105                         resize(c);
 106                 else
 107                         ban_client(c);
 108         }
 109         if(sel && !sel->tags[tsel]) {
 110                 if((sel = next(clients))) {
 111                         craise(sel);
 112                         focus(sel);
 113                 }
 114         }
 115         discard_events(EnterWindowMask);
 116 }
 117
 118 void
 119 tiling(Arg *arg)
 120 {
 121         Client *c;
 122         int n, cols, rows, gw, gh, i, j;
 123     float rt, fd;
 124
 125         arrange = tiling;
 126         for(n = 0, c = clients; c; c = next(c->next), n++);
 127         if(n) {
 128                 rt = sqrt(n);
 129                 if(modff(rt, &fd) < 0.5)
 130                         rows = floor(rt);
 131                 else
 132                         rows = ceil(rt);
 133                 if(rows * rows < n)
 134                         cols = rows + 1;
 135                 else
 136                         cols = rows;
 137
 138                 gw = (sw - 2)  / cols;
 139                 gh = (sh - 2) / rows;
 140         }
 141         else
 142                 cols = rows = gw = gh = 0;
 143
 144         for(i = j = 0, c = clients; c; c = c->next) {
 145                 if(c->tags[tsel]) {
 146                         c->x = i * gw;
 147                         c->y = j * gh;
 148                         c->w = gw;
 149                         c->h = gh;
 150                         resize(c);
 151                         if(++i == cols) {
 152                                 j++;
 153                                 i = 0;
 154                         }
 155                 }
 156                 else
 157                         ban_client(c);
 158         }
 159         if(sel && !sel->tags[tsel]) {
 160                 if((sel = next(clients))) {
 161                         craise(sel);
 162                         focus(sel);
 163                 }
 164         }
 165         discard_events(EnterWindowMask);
 166 }
 167
 168 void
 169 prevc(Arg *arg)
 170 {
 171         Client *c;
 172
 173         if(!sel)
 174                 return;
 175
 176         if((c = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
 177                 craise(c);
 178                 center(c);
 179                 focus(c);
 180         }
 181 }
 182
 183 void
 184 nextc(Arg *arg)
 185 {
 186         Client *c;
 187
 188         if(!sel)
 189                 return;
 190
 191         if(!(c = next(sel->next)))
 192                 c = next(clients);
 193         if(c) {
 194                 craise(c);
 195                 center(c);
 196                 c->revert = sel;
 197                 focus(c);
 198         }
 199 }
 200
 201 void
 202 ckill(Arg *arg)
 203 {
 204         if(!sel)
 205                 return;
 206         if(sel->proto & WM_PROTOCOL_DELWIN)
 207                 send_message(sel->win, wm_atom[WMProtocols], wm_atom[WMDelete]);
 208         else
 209                 XKillClient(dpy, sel->win);
 210 }
 211
 212 static void
 213 resize_title(Client *c)
 214 {
 215         int i;
 216
 217         c->tw = 0;
 218         for(i = 0; i < TLast; i++)
 219                 if(c->tags[i])
 220                         c->tw += textw(c->tags[i]) + dc.font.height;
 221         c->tw += textw(c->name) + dc.font.height;
 222         if(c->tw > c->w)
 223                 c->tw = c->w + 2;
 224         c->tx = c->x + c->w - c->tw + 2;
 225         c->ty = c->y;
 226         XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
 227 }
 228
 229 void
 230 update_name(Client *c)
 231 {
 232         XTextProperty name;
 233         int n;
 234         char **list = NULL;
 235
 236         name.nitems = 0;
 237         c->name[0] = 0;
 238         XGetTextProperty(dpy, c->win, &name, net_atom[NetWMName]);
 239         if(!name.nitems)
 240                 XGetWMName(dpy, c->win, &name);
 241         if(!name.nitems)
 242                 return;
 243         if(name.encoding == XA_STRING)
 244                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 245         else {
 246                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 247                                 && n > 0 && *list)
 248                 {
 249                         strncpy(c->name, *list, sizeof(c->name));
 250                         XFreeStringList(list);
 251                 }
 252         }
 253         XFree(name.value);
 254         resize_title(c);
 255 }
 256
 257 void
 258 update_size(Client *c)
 259 {
 260         XSizeHints size;
 261         long msize;
 262         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 263                 size.flags = PSize;
 264         c->flags = size.flags;
 265         if(c->flags & PBaseSize) {
 266                 c->basew = size.base_width;
 267                 c->baseh = size.base_height;
 268         }
 269         else
 270                 c->basew = c->baseh = 0;
 271         if(c->flags & PResizeInc) {
 272                 c->incw = size.width_inc;
 273                 c->inch = size.height_inc;
 274         }
 275         else
 276                 c->incw = c->inch = 0;
 277         if(c->flags & PMaxSize) {
 278                 c->maxw = size.max_width;
 279                 c->maxh = size.max_height;
 280         }
 281         else
 282                 c->maxw = c->maxh = 0;
 283         if(c->flags & PMinSize) {
 284                 c->minw = size.min_width;
 285                 c->minh = size.min_height;
 286         }
 287         else
 288                 c->minw = c->minh = 0;
 289         if(c->flags & PWinGravity)
 290                 c->grav = size.win_gravity;
 291         else
 292                 c->grav = NorthWestGravity;
 293 }
 294
 295 void
 296 craise(Client *c)
 297 {
 298         XRaiseWindow(dpy, c->win);
 299         XRaiseWindow(dpy, c->title);
 300 }
 301
 302 void
 303 lower(Client *c)
 304 {
 305         XLowerWindow(dpy, c->title);
 306         XLowerWindow(dpy, c->win);
 307 }
 308
 309 void
 310 focus(Client *c)
 311 {
 312         if(sel && sel != c) {
 313                 XSetWindowBorder(dpy, sel->win, dc.bg);
 314                 XMapWindow(dpy, sel->title);
 315                 draw_client(sel);
 316         }
 317         sel = c;
 318         XUnmapWindow(dpy, c->title);
 319         XSetWindowBorder(dpy, c->win, dc.fg);
 320         draw_client(c);
 321         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 322         XFlush(dpy);
 323         discard_events(EnterWindowMask);
 324 }
 325
 326 void
 327 manage(Window w, XWindowAttributes *wa)
 328 {
 329         Client *c, **l;
 330         XSetWindowAttributes twa;
 331
 332         c = emallocz(sizeof(Client));
 333         c->win = w;
 334         c->tx = c->x = wa->x;
 335         c->ty = c->y = wa->y;
 336         c->tw = c->w = wa->width;
 337         c->h = wa->height;
 338         c->th = th;
 339         c->border = 1;
 340         c->proto = win_proto(c->win);
 341         update_size(c);
 342         XSelectInput(dpy, c->win,
 343                         StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 344         XGetTransientForHint(dpy, c->win, &c->trans);
 345         twa.override_redirect = 1;
 346         twa.background_pixmap = ParentRelative;
 347         twa.event_mask = ExposureMask;
 348
 349         c->tags[tsel] = tags[tsel];
 350         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 351                         0, DefaultDepth(dpy, screen), CopyFromParent,
 352                         DefaultVisual(dpy, screen),
 353                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 354
 355         update_name(c);
 356
 357         for(l = &clients; *l; l = &(*l)->next);
 358         c->next = *l; /* *l == nil */
 359         *l = c;
 360
 361         XSetWindowBorderWidth(dpy, c->win, 1);
 362         XMapRaised(dpy, c->win);
 363         XMapRaised(dpy, c->title);
 364         XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 365                         GrabModeAsync, GrabModeSync, None, None);
 366         XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
 367                         GrabModeAsync, GrabModeSync, None, None);
 368         XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 369                         GrabModeAsync, GrabModeSync, None, None);
 370         arrange(NULL);
 371         center(c);
 372         focus(c);
 373 }
 374
 375 void
 376 gravitate(Client *c, Bool invert)
 377 {
 378         int dx = 0, dy = 0;
 379
 380         switch(c->grav) {
 381         case StaticGravity:
 382         case NorthWestGravity:
 383         case NorthGravity:
 384         case NorthEastGravity:
 385                 dy = c->border;
 386                 break;
 387         case EastGravity:
 388         case CenterGravity:
 389         case WestGravity:
 390                 dy = -(c->h / 2) + c->border;
 391                 break;
 392         case SouthEastGravity:
 393         case SouthGravity:
 394         case SouthWestGravity:
 395                 dy = -c->h;
 396                 break;
 397         default:
 398                 break;
 399         }
 400
 401         switch (c->grav) {
 402         case StaticGravity:
 403         case NorthWestGravity:
 404         case WestGravity:
 405         case SouthWestGravity:
 406                 dx = c->border;
 407                 break;
 408         case NorthGravity:
 409         case CenterGravity:
 410         case SouthGravity:
 411                 dx = -(c->w / 2) + c->border;
 412                 break;
 413         case NorthEastGravity:
 414         case EastGravity:
 415         case SouthEastGravity:
 416                 dx = -(c->w + c->border);
 417                 break;
 418         default:
 419                 break;
 420         }
 421
 422         if(invert) {
 423                 dx = -dx;
 424                 dy = -dy;
 425         }
 426         c->x += dx;
 427         c->y += dy;
 428 }
 429
 430
 431 void
 432 resize(Client *c)
 433 {
 434         XConfigureEvent e;
 435
 436         if(c->incw)
 437                 c->w -= (c->w - c->basew) % c->incw;
 438         if(c->inch)
 439                 c->h -= (c->h - c->baseh) % c->inch;
 440         if(c->minw && c->w < c->minw)
 441                 c->w = c->minw;
 442         if(c->minh && c->h < c->minh)
 443                 c->h = c->minh;
 444         if(c->maxw && c->w > c->maxw)
 445                 c->w = c->maxw;
 446         if(c->maxh && c->h > c->maxh)
 447                 c->h = c->maxh;
 448         resize_title(c);
 449         XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 450         e.type = ConfigureNotify;
 451         e.event = c->win;
 452         e.window = c->win;
 453         e.x = c->x;
 454         e.y = c->y;
 455         e.width = c->w;
 456         e.height = c->h;
 457         e.border_width = c->border;
 458         e.above = None;
 459         e.override_redirect = False;
 460         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 461         XFlush(dpy);
 462 }
 463
 464 static int
 465 dummy_error_handler(Display *dsply, XErrorEvent *err)
 466 {
 467         return 0;
 468 }
 469
 470 void
 471 unmanage(Client *c)
 472 {
 473         Client **l;
 474
 475         XGrabServer(dpy);
 476         XSetErrorHandler(dummy_error_handler);
 477
 478         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 479         XDestroyWindow(dpy, c->title);
 480
 481         for(l = &clients; *l && *l != c; l = &(*l)->next);
 482         *l = c->next;
 483         for(l = &clients; *l; l = &(*l)->next)
 484                 if((*l)->revert == c)
 485                         (*l)->revert = NULL;
 486         if(sel == c)
 487                 sel = sel->revert ? sel->revert : clients;
 488
 489         free(c);
 490
 491         XFlush(dpy);
 492         XSetErrorHandler(error_handler);
 493         XUngrabServer(dpy);
 494         arrange(NULL);
 495         if(sel)
 496                 focus(sel);
 497 }
 498
 499 Client *
 500 gettitle(Window w)
 501 {
 502         Client *c;
 503         for(c = clients; c; c = c->next)
 504                 if(c->title == w)
 505                         return c;
 506         return NULL;
 507 }
 508
 509 Client *
 510 getclient(Window w)
 511 {
 512         Client *c;
 513         for(c = clients; c; c = c->next)
 514                 if(c->win == w)
 515                         return c;
 516         return NULL;
 517 }
 518
 519 void
 520 draw_client(Client *c)
 521 {
 522         int i;
 523         if(c == sel)
 524                 return;
 525
 526         dc.x = dc.y = 0;
 527         dc.h = c->th;
 528
 529         dc.w = 0;
 530         for(i = 0; i < TLast; i++) {
 531                 if(c->tags[i]) {
 532                         dc.x += dc.w;
 533                         dc.w = textw(c->tags[i]) + dc.font.height;
 534                         draw(True, c->tags[i]);
 535                 }
 536         }
 537         dc.x += dc.w;
 538         dc.w = textw(c->name) + dc.font.height;
 539         draw(True, c->name);
 540         XCopyArea(dpy, dc.drawable, c->title, dc.gc,
 541                         0, 0, c->tw, c->th, 0, 0);
 542         XFlush(dpy);
 543 }