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
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <X11/Xatom.h>
  10 #include <X11/Xutil.h>
  11
  12 /* static functions */
  13
  14 static void
  15 resizetitle(Client *c)
  16 {
  17         int i;
  18
  19         c->bw = 0;
  20         for(i = 0; i < TLast; i++)
  21                 if(c->tags[i])
  22                         c->bw += textw(c->tags[i]);
  23         c->bw += textw(c->name);
  24         if(c->bw > *c->w)
  25                 c->bw = *c->w + 2;
  26         c->bx = *c->x + *c->w - c->bw + 2;
  27         c->by = *c->y;
  28         XMoveResizeWindow(dpy, c->title, c->bx, c->by, c->bw, c->bh);
  29 }
  30
  31 static int
  32 xerrordummy(Display *dsply, XErrorEvent *ee)
  33 {
  34         return 0;
  35 }
  36
  37 /* extern functions */
  38
  39 void
  40 ban(Client *c)
  41 {
  42         XMoveWindow(dpy, c->win, *c->x + 2 * sw, *c->y);
  43         XMoveWindow(dpy, c->title, c->bx + 2 * sw, c->by);
  44 }
  45
  46 void
  47 focus(Client *c)
  48 {
  49         Client *old = sel;
  50         XEvent ev;
  51
  52         sel = c;
  53         if(old && old != c)
  54                 drawtitle(old);
  55         drawtitle(c);
  56         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  57         XSync(dpy, False);
  58         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  59 }
  60
  61 void
  62 focusnext(Arg *arg)
  63 {
  64         Client *c;
  65
  66         if(!sel)
  67                 return;
  68
  69         if(!(c = getnext(sel->next, tsel)))
  70                 c = getnext(clients, tsel);
  71         if(c) {
  72                 higher(c);
  73                 c->revert = sel;
  74                 focus(c);
  75         }
  76 }
  77
  78 void
  79 focusprev(Arg *arg)
  80 {
  81         Client *c;
  82
  83         if(!sel)
  84                 return;
  85
  86         if((c = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
  87                 higher(c);
  88                 focus(c);
  89         }
  90 }
  91
  92 Client *
  93 getclient(Window w)
  94 {
  95         Client *c;
  96         for(c = clients; c; c = c->next)
  97                 if(c->win == w)
  98                         return c;
  99         return NULL;
 100 }
 101
 102 Client *
 103 getctitle(Window w)
 104 {
 105         Client *c;
 106         for(c = clients; c; c = c->next)
 107                 if(c->title == w)
 108                         return c;
 109         return NULL;
 110 }
 111
 112 void
 113 gravitate(Client *c, Bool invert)
 114 {
 115         int dx = 0, dy = 0;
 116
 117         switch(c->grav) {
 118         case StaticGravity:
 119         case NorthWestGravity:
 120         case NorthGravity:
 121         case NorthEastGravity:
 122                 dy = c->border;
 123                 break;
 124         case EastGravity:
 125         case CenterGravity:
 126         case WestGravity:
 127                 dy = -(*c->h / 2) + c->border;
 128                 break;
 129         case SouthEastGravity:
 130         case SouthGravity:
 131         case SouthWestGravity:
 132                 dy = -(*c->h);
 133                 break;
 134         default:
 135                 break;
 136         }
 137
 138         switch (c->grav) {
 139         case StaticGravity:
 140         case NorthWestGravity:
 141         case WestGravity:
 142         case SouthWestGravity:
 143                 dx = c->border;
 144                 break;
 145         case NorthGravity:
 146         case CenterGravity:
 147         case SouthGravity:
 148                 dx = -(*c->w / 2) + c->border;
 149                 break;
 150         case NorthEastGravity:
 151         case EastGravity:
 152         case SouthEastGravity:
 153                 dx = -(*c->w + c->border);
 154                 break;
 155         default:
 156                 break;
 157         }
 158
 159         if(invert) {
 160                 dx = -dx;
 161                 dy = -dy;
 162         }
 163         *c->x += dx;
 164         *c->y += dy;
 165 }
 166
 167 void
 168 higher(Client *c)
 169 {
 170         XRaiseWindow(dpy, c->win);
 171         XRaiseWindow(dpy, c->title);
 172 }
 173
 174 void
 175 killclient(Arg *arg)
 176 {
 177         if(!sel)
 178                 return;
 179         if(sel->proto & WM_PROTOCOL_DELWIN)
 180                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
 181         else
 182                 XKillClient(dpy, sel->win);
 183 }
 184
 185 void
 186 lower(Client *c)
 187 {
 188         XLowerWindow(dpy, c->title);
 189         XLowerWindow(dpy, c->win);
 190 }
 191
 192 void
 193 manage(Window w, XWindowAttributes *wa)
 194 {
 195         int diff;
 196         Client *c;
 197         XSetWindowAttributes twa;
 198         Window trans;
 199
 200         c = emallocz(sizeof(Client));
 201         c->win = w;
 202         c->bx = c->fx = c->tx = wa->x;
 203         c->by = c->fy = c->ty = wa->y;
 204         c->bw = c->fw = c->tw = wa->width;
 205         c->fh = c->th = wa->height;
 206         c->bh = bh;
 207
 208         diff = sw - c->fw;
 209         c->fx = random() % (diff ? diff : 1);
 210         diff = sh - c->fh - bh;
 211         c->fy = random() % (diff ? diff : 1);
 212
 213         if(c->fy < bh)
 214                 c->by = c->fy = c->ty = bh;
 215
 216         c->border = 1;
 217         c->proto = getproto(c->win);
 218         setsize(c);
 219         XSelectInput(dpy, c->win,
 220                         StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 221         XGetTransientForHint(dpy, c->win, &trans);
 222         twa.override_redirect = 1;
 223         twa.background_pixmap = ParentRelative;
 224         twa.event_mask = ExposureMask;
 225
 226         c->title = XCreateWindow(dpy, root, c->bx, c->by, c->bw, c->bh,
 227                         0, DefaultDepth(dpy, screen), CopyFromParent,
 228                         DefaultVisual(dpy, screen),
 229                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 230
 231         settags(c);
 232
 233         c->next = clients;
 234         clients = c;
 235
 236         XGrabButton(dpy, Button1, ControlMask, c->win, False, ButtonPressMask,
 237                         GrabModeAsync, GrabModeSync, None, None);
 238         XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 239                         GrabModeAsync, GrabModeSync, None, None);
 240         XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
 241                         GrabModeAsync, GrabModeSync, None, None);
 242         XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 243                         GrabModeAsync, GrabModeSync, None, None);
 244
 245         if(!c->isfloat)
 246                 c->isfloat = trans
 247                         || ((c->maxw == c->minw) && (c->maxh == c->minh));
 248
 249         setgeom(c);
 250         settitle(c);
 251
 252         arrange(NULL);
 253
 254         /* mapping the window now prevents flicker */
 255         if(c->tags[tsel]) {
 256                 XMapRaised(dpy, c->win);
 257                 XMapRaised(dpy, c->title);
 258                 focus(c);
 259         }
 260         else {
 261                 ban(c);
 262                 XMapRaised(dpy, c->win);
 263                 XMapRaised(dpy, c->title);
 264                 XSync(dpy, False);
 265         }
 266 }
 267
 268 void
 269 maximize(Arg *arg)
 270 {
 271         if(!sel)
 272                 return;
 273         *sel->x = sx;
 274         *sel->y = sy + bh;
 275         *sel->w = sw - 2 * sel->border;
 276         *sel->h = sh - 2 * sel->border - bh;
 277         higher(sel);
 278         resize(sel, False, TopLeft);
 279 }
 280
 281 void
 282 pop(Client *c)
 283 {
 284         Client **l;
 285         for(l = &clients; *l && *l != c; l = &(*l)->next);
 286         *l = c->next;
 287
 288         c->next = clients; /* pop */
 289         clients = c;
 290         arrange(NULL);
 291 }
 292
 293 void
 294 resize(Client *c, Bool inc, Corner sticky)
 295 {
 296         XConfigureEvent e;
 297         int right = *c->x + *c->w;
 298         int bottom = *c->y + *c->h;
 299
 300         if(inc) {
 301                 if(c->incw)
 302                         *c->w -= (*c->w - c->basew) % c->incw;
 303                 if(c->inch)
 304                         *c->h -= (*c->h - c->baseh) % c->inch;
 305         }
 306         if(*c->x > sw) /* might happen on restart */
 307                 *c->x = sw - *c->w;
 308         if(*c->y > sh)
 309                 *c->y = sh - *c->h;
 310         if(c->minw && *c->w < c->minw)
 311                 *c->w = c->minw;
 312         if(c->minh && *c->h < c->minh)
 313                 *c->h = c->minh;
 314         if(c->maxw && *c->w > c->maxw)
 315                 *c->w = c->maxw;
 316         if(c->maxh && *c->h > c->maxh)
 317                 *c->h = c->maxh;
 318         if(sticky == TopRight || sticky == BottomRight)
 319                 *c->x = right - *c->w;
 320         if(sticky == BottomLeft || sticky == BottomRight)
 321                 *c->y = bottom - *c->h;
 322         resizetitle(c);
 323         XSetWindowBorderWidth(dpy, c->win, 1);
 324         XMoveResizeWindow(dpy, c->win, *c->x, *c->y, *c->w, *c->h);
 325         e.type = ConfigureNotify;
 326         e.event = c->win;
 327         e.window = c->win;
 328         e.x = *c->x;
 329         e.y = *c->y;
 330         e.width = *c->w;
 331         e.height = *c->h;
 332         e.border_width = c->border;
 333         e.above = None;
 334         e.override_redirect = False;
 335         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 336         XSync(dpy, False);
 337 }
 338
 339 void
 340 setgeom(Client *c)
 341 {
 342         if((arrange == dotile) && !c->isfloat) {
 343                 c->x = &c->tx;
 344                 c->y = &c->ty;
 345                 c->w = &c->tw;
 346                 c->h = &c->th;
 347         }
 348         else {
 349                 c->x = &c->fx;
 350                 c->y = &c->fy;
 351                 c->w = &c->fw;
 352                 c->h = &c->fh;
 353         }
 354 }
 355
 356 void
 357 setsize(Client *c)
 358 {
 359         XSizeHints size;
 360         long msize;
 361         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 362                 size.flags = PSize;
 363         c->flags = size.flags;
 364         if(c->flags & PBaseSize) {
 365                 c->basew = size.base_width;
 366                 c->baseh = size.base_height;
 367         }
 368         else
 369                 c->basew = c->baseh = 0;
 370         if(c->flags & PResizeInc) {
 371                 c->incw = size.width_inc;
 372                 c->inch = size.height_inc;
 373         }
 374         else
 375                 c->incw = c->inch = 0;
 376         if(c->flags & PMaxSize) {
 377                 c->maxw = size.max_width;
 378                 c->maxh = size.max_height;
 379         }
 380         else
 381                 c->maxw = c->maxh = 0;
 382         if(c->flags & PMinSize) {
 383                 c->minw = size.min_width;
 384                 c->minh = size.min_height;
 385         }
 386         else
 387                 c->minw = c->minh = 0;
 388         if(c->flags & PWinGravity)
 389                 c->grav = size.win_gravity;
 390         else
 391                 c->grav = NorthWestGravity;
 392 }
 393
 394 void
 395 settitle(Client *c)
 396 {
 397         XTextProperty name;
 398         int n;
 399         char **list = NULL;
 400
 401         name.nitems = 0;
 402         c->name[0] = 0;
 403         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 404         if(!name.nitems)
 405                 XGetWMName(dpy, c->win, &name);
 406         if(!name.nitems)
 407                 return;
 408         if(name.encoding == XA_STRING)
 409                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 410         else {
 411                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 412                                 && n > 0 && *list)
 413                 {
 414                         strncpy(c->name, *list, sizeof(c->name));
 415                         XFreeStringList(list);
 416                 }
 417         }
 418         XFree(name.value);
 419         resizetitle(c);
 420 }
 421
 422 void
 423 unmanage(Client *c)
 424 {
 425         Client **l;
 426
 427         XGrabServer(dpy);
 428         XSetErrorHandler(xerrordummy);
 429
 430         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 431         XDestroyWindow(dpy, c->title);
 432
 433         for(l = &clients; *l && *l != c; l = &(*l)->next);
 434         *l = c->next;
 435         for(l = &clients; *l; l = &(*l)->next)
 436                 if((*l)->revert == c)
 437                         (*l)->revert = NULL;
 438         if(sel == c)
 439                 sel = sel->revert ? sel->revert : clients;
 440
 441         free(c);
 442
 443         XSync(dpy, False);
 444         XSetErrorHandler(xerror);
 445         XUngrabServer(dpy);
 446         arrange(NULL);
 447         if(sel)
 448                 focus(sel);
 449 }
 450
 451 void
 452 zoom(Arg *arg)
 453 {
 454         Client *c;
 455
 456         if(!sel)
 457                 return;
 458
 459         if(sel == getnext(clients, tsel) && sel->next)  {
 460                 if((c = getnext(sel->next, tsel)))
 461                         sel = c;
 462         }
 463
 464         pop(sel);
 465         focus(sel);
 466 }