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