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(sel->ismax)
  74                 togglemax(NULL);
  75
  76         if(!(c = getnext(sel->next, tsel)))
  77                 c = getnext(clients, tsel);
  78         if(c) {
  79                 higher(c);
  80                 c->revert = sel;
  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 = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
  97                 higher(c);
  98                 focus(c);
  99         }
 100 }
 101
 102 Client *
 103 getclient(Window w)
 104 {
 105         Client *c;
 106
 107         for(c = clients; c; c = c->next)
 108                 if(c->win == w)
 109                         return c;
 110         return NULL;
 111 }
 112
 113 Client *
 114 getctitle(Window w)
 115 {
 116         Client *c;
 117
 118         for(c = clients; c; c = c->next)
 119                 if(c->title == w)
 120                         return c;
 121         return NULL;
 122 }
 123
 124 void
 125 gravitate(Client *c, Bool invert)
 126 {
 127         int dx = 0, dy = 0;
 128
 129         switch(c->grav) {
 130         case StaticGravity:
 131         case NorthWestGravity:
 132         case NorthGravity:
 133         case NorthEastGravity:
 134                 dy = c->border;
 135                 break;
 136         case EastGravity:
 137         case CenterGravity:
 138         case WestGravity:
 139                 dy = -(c->h / 2) + c->border;
 140                 break;
 141         case SouthEastGravity:
 142         case SouthGravity:
 143         case SouthWestGravity:
 144                 dy = -(c->h);
 145                 break;
 146         default:
 147                 break;
 148         }
 149
 150         switch (c->grav) {
 151         case StaticGravity:
 152         case NorthWestGravity:
 153         case WestGravity:
 154         case SouthWestGravity:
 155                 dx = c->border;
 156                 break;
 157         case NorthGravity:
 158         case CenterGravity:
 159         case SouthGravity:
 160                 dx = -(c->w / 2) + c->border;
 161                 break;
 162         case NorthEastGravity:
 163         case EastGravity:
 164         case SouthEastGravity:
 165                 dx = -(c->w + c->border);
 166                 break;
 167         default:
 168                 break;
 169         }
 170
 171         if(invert) {
 172                 dx = -dx;
 173                 dy = -dy;
 174         }
 175         c->x += dx;
 176         c->y += dy;
 177 }
 178
 179 void
 180 higher(Client *c)
 181 {
 182         XRaiseWindow(dpy, c->win);
 183         XRaiseWindow(dpy, c->title);
 184 }
 185
 186 void
 187 killclient(Arg *arg)
 188 {
 189         if(!sel)
 190                 return;
 191         if(sel->proto & WM_PROTOCOL_DELWIN)
 192                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
 193         else
 194                 XKillClient(dpy, sel->win);
 195 }
 196
 197 void
 198 lower(Client *c)
 199 {
 200         XLowerWindow(dpy, c->title);
 201         XLowerWindow(dpy, c->win);
 202 }
 203
 204 void
 205 manage(Window w, XWindowAttributes *wa)
 206 {
 207         int diff;
 208         Client *c;
 209         Window trans;
 210         XSetWindowAttributes twa;
 211
 212         c = emallocz(sizeof(Client));
 213         c->win = w;
 214         c->x = c->tx = wa->x;
 215         c->y = c->ty = wa->y;
 216         c->w = c->tw = wa->width;
 217         c->h = wa->height;
 218         c->th = bh;
 219
 220         if(c->y < bh)
 221                 c->y = c->ty = bh;
 222
 223         c->border = 1;
 224         c->proto = getproto(c->win);
 225         setsize(c);
 226         XSelectInput(dpy, c->win,
 227                         StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 228         XGetTransientForHint(dpy, c->win, &trans);
 229         twa.override_redirect = 1;
 230         twa.background_pixmap = ParentRelative;
 231         twa.event_mask = ExposureMask;
 232
 233         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 234                         0, DefaultDepth(dpy, screen), CopyFromParent,
 235                         DefaultVisual(dpy, screen),
 236                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 237
 238         settags(c);
 239
 240         c->next = clients;
 241         clients = c;
 242
 243         XGrabButton(dpy, Button1, MODKEY, c->win, False, ButtonPressMask,
 244                         GrabModeAsync, GrabModeSync, None, None);
 245         XGrabButton(dpy, Button2, MODKEY, c->win, False, ButtonPressMask,
 246                         GrabModeAsync, GrabModeSync, None, None);
 247         XGrabButton(dpy, Button3, MODKEY, c->win, False, ButtonPressMask,
 248                         GrabModeAsync, GrabModeSync, None, None);
 249
 250         if(!c->isfloat)
 251                 c->isfloat = trans || (c->maxw && c->minw &&
 252                                 (c->maxw == c->minw) && (c->maxh == c->minh));
 253
 254
 255         settitle(c);
 256         arrange(NULL);
 257
 258         /* mapping the window now prevents flicker */
 259         if(c->tags[tsel]) {
 260                 XMapRaised(dpy, c->win);
 261                 XMapRaised(dpy, c->title);
 262                 focus(c);
 263         }
 264         else {
 265                 XMapRaised(dpy, c->win);
 266                 XMapRaised(dpy, c->title);
 267         }
 268 }
 269
 270 void
 271 pop(Client *c)
 272 {
 273         Client **l;
 274
 275         for(l = &clients; *l && *l != c; l = &(*l)->next);
 276         *l = c->next;
 277
 278         c->next = clients; /* pop */
 279         clients = c;
 280         arrange(NULL);
 281 }
 282
 283 void
 284 resize(Client *c, Bool inc, Corner sticky)
 285 {
 286         int bottom = c->y + c->h;
 287         int right = c->x + c->w;
 288         XConfigureEvent e;
 289
 290         if(inc) {
 291                 if(c->incw)
 292                         c->w -= (c->w - c->basew) % c->incw;
 293                 if(c->inch)
 294                         c->h -= (c->h - c->baseh) % c->inch;
 295         }
 296         if(c->x > sw) /* might happen on restart */
 297                 c->x = sw - c->w;
 298         if(c->y > sh)
 299                 c->y = sh - c->h;
 300         if(c->minw && c->w < c->minw)
 301                 c->w = c->minw;
 302         if(c->minh && c->h < c->minh)
 303                 c->h = c->minh;
 304         if(c->maxw && c->w > c->maxw)
 305                 c->w = c->maxw;
 306         if(c->maxh && c->h > c->maxh)
 307                 c->h = c->maxh;
 308         if(sticky == TopRight || sticky == BotRight)
 309                 c->x = right - c->w;
 310         if(sticky == BotLeft || sticky == BotRight)
 311                 c->y = bottom - c->h;
 312
 313         resizetitle(c);
 314         XSetWindowBorderWidth(dpy, c->win, 1);
 315         XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 316
 317         e.type = ConfigureNotify;
 318         e.event = c->win;
 319         e.window = c->win;
 320         e.x = c->x;
 321         e.y = c->y;
 322         e.width = c->w;
 323         e.height = c->h;
 324         e.border_width = c->border;
 325         e.above = None;
 326         e.override_redirect = False;
 327         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 328         XSync(dpy, False);
 329 }
 330
 331 void
 332 setsize(Client *c)
 333 {
 334         long msize;
 335         XSizeHints size;
 336
 337         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 338                 size.flags = PSize;
 339         c->flags = size.flags;
 340         if(c->flags & PBaseSize) {
 341                 c->basew = size.base_width;
 342                 c->baseh = size.base_height;
 343         }
 344         else
 345                 c->basew = c->baseh = 0;
 346         if(c->flags & PResizeInc) {
 347                 c->incw = size.width_inc;
 348                 c->inch = size.height_inc;
 349         }
 350         else
 351                 c->incw = c->inch = 0;
 352         if(c->flags & PMaxSize) {
 353                 c->maxw = size.max_width;
 354                 c->maxh = size.max_height;
 355         }
 356         else
 357                 c->maxw = c->maxh = 0;
 358         if(c->flags & PMinSize) {
 359                 c->minw = size.min_width;
 360                 c->minh = size.min_height;
 361         }
 362         else
 363                 c->minw = c->minh = 0;
 364         if(c->flags & PWinGravity)
 365                 c->grav = size.win_gravity;
 366         else
 367                 c->grav = NorthWestGravity;
 368 }
 369
 370 void
 371 settitle(Client *c)
 372 {
 373         char **list = NULL;
 374         int n;
 375         XTextProperty name;
 376
 377         name.nitems = 0;
 378         c->name[0] = 0;
 379         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 380         if(!name.nitems)
 381                 XGetWMName(dpy, c->win, &name);
 382         if(!name.nitems)
 383                 return;
 384         if(name.encoding == XA_STRING)
 385                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 386         else {
 387                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 388                                 && n > 0 && *list)
 389                 {
 390                         strncpy(c->name, *list, sizeof(c->name));
 391                         XFreeStringList(list);
 392                 }
 393         }
 394         XFree(name.value);
 395         resizetitle(c);
 396 }
 397
 398 void
 399 togglemax(Arg *arg)
 400 {
 401         int ox, oy, ow, oh;
 402         XEvent ev;
 403
 404         if(!sel)
 405                 return;
 406
 407         if((sel->ismax = !sel->ismax)) {
 408                 ox = sel->x;
 409                 oy = sel->y;
 410                 ow = sel->w;
 411                 oh = sel->h;
 412                 sel->x = sx;
 413                 sel->y = sy + bh;
 414                 sel->w = sw - 2 * sel->border;
 415                 sel->h = sh - 2 * sel->border - bh;
 416
 417                 higher(sel);
 418                 resize(sel, False, TopLeft);
 419
 420                 sel->x = ox;
 421                 sel->y = oy;
 422                 sel->w = ow;
 423                 sel->h = oh;
 424         }
 425         else
 426                 resize(sel, False, TopLeft);
 427         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 428 }
 429
 430 void
 431 unmanage(Client *c)
 432 {
 433         Client **l;
 434
 435         XGrabServer(dpy);
 436         XSetErrorHandler(xerrordummy);
 437
 438         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 439         XDestroyWindow(dpy, c->title);
 440
 441         for(l = &clients; *l && *l != c; l = &(*l)->next);
 442         *l = c->next;
 443         for(l = &clients; *l; l = &(*l)->next)
 444                 if((*l)->revert == c)
 445                         (*l)->revert = NULL;
 446         if(sel == c)
 447                 sel = sel->revert ? sel->revert : clients;
 448
 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)
 465                 return;
 466
 467         if(sel == getnext(clients, tsel) && sel->next)  {
 468                 if((c = getnext(sel->next, tsel)))
 469                         sel = c;
 470         }
 471
 472         pop(sel);
 473         focus(sel);
 474 }