client.c

   1 /*
   2  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
   3  * See LICENSE file for license details.
   4  */
   5 #include "dwm.h"
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <X11/Xatom.h>
   9 #include <X11/Xutil.h>
  10
  11 /* static functions */
  12
  13 static void
  14 resizetitle(Client *c)
  15 {
  16         int i;
  17
  18         c->tw = 0;
  19         for(i = 0; i < ntags; i++)
  20                 if(c->tags[i])
  21                         c->tw += textw(tags[i]);
  22         c->tw += textw(c->name);
  23         if(c->tw > c->w)
  24                 c->tw = c->w + 2;
  25         c->tx = c->x + c->w - c->tw + 2;
  26         c->ty = c->y;
  27         if(c->tags[tsel])
  28                 XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
  29         else
  30                 XMoveResizeWindow(dpy, c->title, c->tx + 2 * sw, c->ty, c->tw, c->th);
  31
  32 }
  33
  34 static int
  35 xerrordummy(Display *dsply, XErrorEvent *ee)
  36 {
  37         return 0;
  38 }
  39
  40 /* extern functions */
  41
  42 void
  43 ban(Client *c)
  44 {
  45         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  46         XMoveWindow(dpy, c->title, c->tx + 2 * sw, c->ty);
  47 }
  48
  49 void
  50 focus(Client *c)
  51 {
  52         if (!issel)
  53                 return;
  54         Client *old = sel;
  55         XEvent ev;
  56
  57         sel = c;
  58         if(old && old != c)
  59                 drawtitle(old);
  60         drawtitle(c);
  61         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  62         XSync(dpy, False);
  63         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  64 }
  65
  66 void
  67 focusnext(Arg *arg)
  68 {
  69         Client *c;
  70
  71         if(!sel)
  72                 return;
  73
  74         if(sel->ismax)
  75                 togglemax(NULL);
  76
  77         if(!(c = getnext(sel->next)))
  78                 c = getnext(clients);
  79         if(c) {
  80                 higher(c);
  81                 focus(c);
  82         }
  83 }
  84
  85 void
  86 focusprev(Arg *arg)
  87 {
  88         Client *c;
  89
  90         if(!sel)
  91                 return;
  92
  93         if(sel->ismax)
  94                 togglemax(NULL);
  95
  96         if(!(c = getprev(sel->prev))) {
  97                 for(c = clients; c && c->next; c = c->next);
  98                 c = getprev(c);
  99         }
 100         if(c) {
 101                 higher(c);
 102                 focus(c);
 103         }
 104 }
 105
 106 Client *
 107 getclient(Window w)
 108 {
 109         Client *c;
 110
 111         for(c = clients; c; c = c->next)
 112                 if(c->win == w)
 113                         return c;
 114         return NULL;
 115 }
 116
 117 Client *
 118 getctitle(Window w)
 119 {
 120         Client *c;
 121
 122         for(c = clients; c; c = c->next)
 123                 if(c->title == w)
 124                         return c;
 125         return NULL;
 126 }
 127
 128 void
 129 gravitate(Client *c, Bool invert)
 130 {
 131         int dx = 0, dy = 0;
 132
 133         switch(c->grav) {
 134         default:
 135                 break;
 136         case StaticGravity:
 137         case NorthWestGravity:
 138         case NorthGravity:
 139         case NorthEastGravity:
 140                 dy = c->border;
 141                 break;
 142         case EastGravity:
 143         case CenterGravity:
 144         case WestGravity:
 145                 dy = -(c->h / 2) + c->border;
 146                 break;
 147         case SouthEastGravity:
 148         case SouthGravity:
 149         case SouthWestGravity:
 150                 dy = -(c->h);
 151                 break;
 152         }
 153
 154         switch (c->grav) {
 155         default:
 156                 break;
 157         case StaticGravity:
 158         case NorthWestGravity:
 159         case WestGravity:
 160         case SouthWestGravity:
 161                 dx = c->border;
 162                 break;
 163         case NorthGravity:
 164         case CenterGravity:
 165         case SouthGravity:
 166                 dx = -(c->w / 2) + c->border;
 167                 break;
 168         case NorthEastGravity:
 169         case EastGravity:
 170         case SouthEastGravity:
 171                 dx = -(c->w + c->border);
 172                 break;
 173         }
 174
 175         if(invert) {
 176                 dx = -dx;
 177                 dy = -dy;
 178         }
 179         c->x += dx;
 180         c->y += dy;
 181 }
 182
 183 void
 184 higher(Client *c)
 185 {
 186         XRaiseWindow(dpy, c->win);
 187         XRaiseWindow(dpy, c->title);
 188 }
 189
 190 void
 191 killclient(Arg *arg)
 192 {
 193         if(!sel)
 194                 return;
 195         if(sel->proto & PROTODELWIN)
 196                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
 197         else
 198                 XKillClient(dpy, sel->win);
 199 }
 200
 201 void
 202 manage(Window w, XWindowAttributes *wa)
 203 {
 204         Client *c;
 205         Window trans;
 206         XSetWindowAttributes twa;
 207
 208         c = emallocz(sizeof(Client));
 209         c->tags = emallocz(ntags * sizeof(Bool));
 210         c->win = w;
 211         c->x = c->tx = wa->x;
 212         c->y = c->ty = wa->y;
 213         c->w = c->tw = wa->width;
 214         c->h = wa->height;
 215         c->th = bh;
 216
 217         c->border = 0;
 218         setsize(c);
 219
 220         if(c->h != sh && c->y < bh)
 221                 c->y = c->ty = bh;
 222
 223         c->proto = getproto(c->win);
 224         XSelectInput(dpy, c->win,
 225                 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 226         XGetTransientForHint(dpy, c->win, &trans);
 227         twa.override_redirect = 1;
 228         twa.background_pixmap = ParentRelative;
 229         twa.event_mask = ExposureMask | EnterWindowMask;
 230
 231         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 232                         0, DefaultDepth(dpy, screen), CopyFromParent,
 233                         DefaultVisual(dpy, screen),
 234                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 235
 236         if(clients)
 237                 clients->prev = c;
 238         c->next = clients;
 239         clients = c;
 240
 241         XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
 242                         GrabModeAsync, GrabModeSync, None, None);
 243         XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
 244                         GrabModeAsync, GrabModeSync, None, None);
 245         XGrabButton(dpy, Button1, MODKEY | NUMLOCKMASK, c->win, False, BUTTONMASK,
 246                         GrabModeAsync, GrabModeSync, None, None);
 247         XGrabButton(dpy, Button1, MODKEY | NUMLOCKMASK | LockMask, c->win, False, BUTTONMASK,
 248                         GrabModeAsync, GrabModeSync, None, None);
 249
 250         XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
 251                         GrabModeAsync, GrabModeSync, None, None);
 252         XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
 253                         GrabModeAsync, GrabModeSync, None, None);
 254         XGrabButton(dpy, Button2, MODKEY | NUMLOCKMASK, c->win, False, BUTTONMASK,
 255                         GrabModeAsync, GrabModeSync, None, None);
 256         XGrabButton(dpy, Button2, MODKEY | NUMLOCKMASK | LockMask, c->win, False, BUTTONMASK,
 257                         GrabModeAsync, GrabModeSync, None, None);
 258
 259         XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
 260                         GrabModeAsync, GrabModeSync, None, None);
 261         XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
 262                         GrabModeAsync, GrabModeSync, None, None);
 263         XGrabButton(dpy, Button3, MODKEY | NUMLOCKMASK, c->win, False, BUTTONMASK,
 264                         GrabModeAsync, GrabModeSync, None, None);
 265         XGrabButton(dpy, Button3, MODKEY | NUMLOCKMASK | LockMask, c->win, False, BUTTONMASK,
 266                         GrabModeAsync, GrabModeSync, None, None);
 267
 268         settags(c);
 269         if(!c->isfloat)
 270                 c->isfloat = trans
 271                         || (c->maxw && c->minw &&
 272                                 c->maxw == c->minw && c->maxh == c->minh);
 273         settitle(c);
 274         arrange(NULL);
 275
 276         /* mapping the window now prevents flicker */
 277         XMapRaised(dpy, c->win);
 278         XMapRaised(dpy, c->title);
 279         if(c->tags[tsel])
 280                 focus(c);
 281 }
 282
 283 void
 284 resize(Client *c, Bool sizehints, Corner sticky)
 285 {
 286         int bottom = c->y + c->h;
 287         int right = c->x + c->w;
 288         /*XConfigureEvent e;*/
 289         XWindowChanges wc;
 290
 291         if(sizehints) {
 292                 if(c->incw)
 293                         c->w -= (c->w - c->basew) % c->incw;
 294                 if(c->inch)
 295                         c->h -= (c->h - c->baseh) % c->inch;
 296                 if(c->minw && c->w < c->minw)
 297                         c->w = c->minw;
 298                 if(c->minh && c->h < c->minh)
 299                         c->h = c->minh;
 300                 if(c->maxw && c->w > c->maxw)
 301                         c->w = c->maxw;
 302                 if(c->maxh && c->h > c->maxh)
 303                         c->h = c->maxh;
 304         }
 305         if(c->x > right) /* might happen on restart */
 306                 c->x = right - c->w;
 307         if(c->y > bottom)
 308                 c->y = bottom - c->h;
 309         if(sticky == TopRight || sticky == BotRight)
 310                 c->x = right - c->w;
 311         if(sticky == BotLeft || sticky == BotRight)
 312                 c->y = bottom - c->h;
 313
 314         resizetitle(c);
 315         wc.x = c->x;
 316         wc.y = c->y;
 317         wc.width = c->w;
 318         wc.height = c->h;
 319         if(c->w == sw && c->h == sh)
 320                 wc.border_width = 0;
 321         else
 322                 wc.border_width = 1;
 323         XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
 324         XSync(dpy, False);
 325 }
 326
 327 void
 328 setsize(Client *c)
 329 {
 330         long msize;
 331         XSizeHints size;
 332
 333         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 334                 size.flags = PSize;
 335         c->flags = size.flags;
 336         if(c->flags & PBaseSize) {
 337                 c->basew = size.base_width;
 338                 c->baseh = size.base_height;
 339         }
 340         else
 341                 c->basew = c->baseh = 0;
 342         if(c->flags & PResizeInc) {
 343                 c->incw = size.width_inc;
 344                 c->inch = size.height_inc;
 345         }
 346         else
 347                 c->incw = c->inch = 0;
 348         if(c->flags & PMaxSize) {
 349                 c->maxw = size.max_width;
 350                 c->maxh = size.max_height;
 351         }
 352         else
 353                 c->maxw = c->maxh = 0;
 354         if(c->flags & PMinSize) {
 355                 c->minw = size.min_width;
 356                 c->minh = size.min_height;
 357         }
 358         else
 359                 c->minw = c->minh = 0;
 360         if(c->flags & PWinGravity)
 361                 c->grav = size.win_gravity;
 362         else
 363                 c->grav = NorthWestGravity;
 364 }
 365
 366 void
 367 settitle(Client *c)
 368 {
 369         char **list = NULL;
 370         int n;
 371         XTextProperty name;
 372
 373         name.nitems = 0;
 374         c->name[0] = 0;
 375         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 376         if(!name.nitems)
 377                 XGetWMName(dpy, c->win, &name);
 378         if(!name.nitems)
 379                 return;
 380         if(name.encoding == XA_STRING)
 381                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 382         else {
 383                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 384                                 && n > 0 && *list)
 385                 {
 386                         strncpy(c->name, *list, sizeof(c->name));
 387                         XFreeStringList(list);
 388                 }
 389         }
 390         XFree(name.value);
 391         resizetitle(c);
 392 }
 393
 394 void
 395 togglemax(Arg *arg)
 396 {
 397         int ox, oy, ow, oh;
 398         XEvent ev;
 399
 400         if(!sel)
 401                 return;
 402
 403         if((sel->ismax = !sel->ismax)) {
 404                 ox = sel->x;
 405                 oy = sel->y;
 406                 ow = sel->w;
 407                 oh = sel->h;
 408                 sel->x = sx;
 409                 sel->y = sy + bh;
 410                 sel->w = sw - 2;
 411                 sel->h = sh - 2 - bh;
 412
 413                 higher(sel);
 414                 resize(sel, arrange == dofloat, TopLeft);
 415
 416                 sel->x = ox;
 417                 sel->y = oy;
 418                 sel->w = ow;
 419                 sel->h = oh;
 420         }
 421         else
 422                 resize(sel, False, TopLeft);
 423         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 424 }
 425
 426 void
 427 unmanage(Client *c)
 428 {
 429         XGrabServer(dpy);
 430         XSetErrorHandler(xerrordummy);
 431
 432         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 433         XDestroyWindow(dpy, c->title);
 434
 435         if(c->prev)
 436                 c->prev->next = c->next;
 437         if(c->next)
 438                 c->next->prev = c->prev;
 439         if(c == clients)
 440                 clients = c->next;
 441         if(sel == c) {
 442                 sel = getnext(c->next);
 443                 if(!sel)
 444                         sel = getprev(c->prev);
 445                 if(!sel)
 446                         sel = clients;
 447         }
 448         free(c->tags);
 449         free(c);
 450
 451         XSync(dpy, False);
 452         XSetErrorHandler(xerror);
 453         XUngrabServer(dpy);
 454         arrange(NULL);
 455         if(sel)
 456                 focus(sel);
 457 }
 458
 459 void
 460 zoom(Arg *arg)
 461 {
 462         Client *c;
 463
 464         if(!sel || (arrange != dotile) || sel->isfloat)
 465                 return;
 466
 467         if(sel == getnext(clients))  {
 468                 if((c = getnext(sel->next)))
 469                         sel = c;
 470                 else
 471                         return;
 472         }
 473
 474         /* pop */
 475         if(sel->prev)
 476                 sel->prev->next = sel->next;
 477         if(sel->next)
 478                 sel->next->prev = sel->prev;
 479         sel->prev = NULL;
 480         if(clients)
 481                 clients->prev = sel;
 482         sel->next = clients;
 483         clients = sel;
 484         arrange(NULL);
 485         focus(sel);
 486 }