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         if(c->tags[tsel])
  29                 XMoveResizeWindow(dpy, c->title, c->bx, c->by, c->bw, c->bh);
  30         else
  31                 XMoveResizeWindow(dpy, c->title, c->bx + 2 * sw, c->by, c->bw, c->bh);
  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->bx + 2 * sw, c->by);
  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         for(c = clients; c; c = c->next)
 101                 if(c->win == w)
 102                         return c;
 103         return NULL;
 104 }
 105
 106 Client *
 107 getctitle(Window w)
 108 {
 109         Client *c;
 110         for(c = clients; c; c = c->next)
 111                 if(c->title == w)
 112                         return c;
 113         return NULL;
 114 }
 115
 116 void
 117 gravitate(Client *c, Bool invert)
 118 {
 119         int dx = 0, dy = 0;
 120
 121         switch(c->grav) {
 122         case StaticGravity:
 123         case NorthWestGravity:
 124         case NorthGravity:
 125         case NorthEastGravity:
 126                 dy = c->border;
 127                 break;
 128         case EastGravity:
 129         case CenterGravity:
 130         case WestGravity:
 131                 dy = -(*c->h / 2) + c->border;
 132                 break;
 133         case SouthEastGravity:
 134         case SouthGravity:
 135         case SouthWestGravity:
 136                 dy = -(*c->h);
 137                 break;
 138         default:
 139                 break;
 140         }
 141
 142         switch (c->grav) {
 143         case StaticGravity:
 144         case NorthWestGravity:
 145         case WestGravity:
 146         case SouthWestGravity:
 147                 dx = c->border;
 148                 break;
 149         case NorthGravity:
 150         case CenterGravity:
 151         case SouthGravity:
 152                 dx = -(*c->w / 2) + c->border;
 153                 break;
 154         case NorthEastGravity:
 155         case EastGravity:
 156         case SouthEastGravity:
 157                 dx = -(*c->w + c->border);
 158                 break;
 159         default:
 160                 break;
 161         }
 162
 163         if(invert) {
 164                 dx = -dx;
 165                 dy = -dy;
 166         }
 167         *c->x += dx;
 168         *c->y += dy;
 169 }
 170
 171 void
 172 higher(Client *c)
 173 {
 174         XRaiseWindow(dpy, c->win);
 175         XRaiseWindow(dpy, c->title);
 176 }
 177
 178 void
 179 killclient(Arg *arg)
 180 {
 181         if(!sel)
 182                 return;
 183         if(sel->proto & WM_PROTOCOL_DELWIN)
 184                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
 185         else
 186                 XKillClient(dpy, sel->win);
 187 }
 188
 189 void
 190 lower(Client *c)
 191 {
 192         XLowerWindow(dpy, c->title);
 193         XLowerWindow(dpy, c->win);
 194 }
 195
 196 void
 197 manage(Window w, XWindowAttributes *wa)
 198 {
 199         int diff;
 200         Client *c;
 201         XSetWindowAttributes twa;
 202         Window trans;
 203
 204         c = emallocz(sizeof(Client));
 205         c->win = w;
 206         c->bx = c->fx = c->tx = wa->x;
 207         c->by = c->fy = c->ty = wa->y;
 208         c->bw = c->fw = c->tw = wa->width;
 209         c->fh = c->th = wa->height;
 210         c->bh = bh;
 211
 212         diff = sw - c->fw;
 213         c->fx = random() % (diff ? diff : 1);
 214         diff = sh - c->fh - bh;
 215         c->fy = random() % (diff ? diff : 1);
 216
 217         if(c->fy < bh)
 218                 c->by = c->fy = c->ty = bh;
 219
 220         c->border = 1;
 221         c->proto = getproto(c->win);
 222         setsize(c);
 223         XSelectInput(dpy, c->win,
 224                         StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 225         XGetTransientForHint(dpy, c->win, &trans);
 226         twa.override_redirect = 1;
 227         twa.background_pixmap = ParentRelative;
 228         twa.event_mask = ExposureMask;
 229
 230         c->title = XCreateWindow(dpy, root, c->bx, c->by, c->bw, c->bh,
 231                         0, DefaultDepth(dpy, screen), CopyFromParent,
 232                         DefaultVisual(dpy, screen),
 233                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 234
 235         settags(c);
 236
 237         c->next = clients;
 238         clients = c;
 239
 240         XGrabButton(dpy, Button1, ControlMask, c->win, False, ButtonPressMask,
 241                         GrabModeAsync, GrabModeSync, None, None);
 242         XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 243                         GrabModeAsync, GrabModeSync, None, None);
 244         XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
 245                         GrabModeAsync, GrabModeSync, None, None);
 246         XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 247                         GrabModeAsync, GrabModeSync, None, None);
 248
 249         if(!c->isfloat)
 250                 c->isfloat = trans
 251                         || ((c->maxw == c->minw) && (c->maxh == c->minh));
 252
 253         setgeom(c);
 254         settitle(c);
 255
 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 maximize(Arg *arg)
 272 {
 273         if(!sel)
 274                 return;
 275         *sel->x = sx;
 276         *sel->y = sy + bh;
 277         *sel->w = sw - 2 * sel->border;
 278         *sel->h = sh - 2 * sel->border - bh;
 279         higher(sel);
 280         resize(sel, False, TopLeft);
 281 }
 282
 283 void
 284 pop(Client *c)
 285 {
 286         Client **l;
 287         for(l = &clients; *l && *l != c; l = &(*l)->next);
 288         *l = c->next;
 289
 290         c->next = clients; /* pop */
 291         clients = c;
 292         arrange(NULL);
 293 }
 294
 295 void
 296 resize(Client *c, Bool inc, Corner sticky)
 297 {
 298         XConfigureEvent e;
 299         int right = *c->x + *c->w;
 300         int bottom = *c->y + *c->h;
 301
 302         if(inc) {
 303                 if(c->incw)
 304                         *c->w -= (*c->w - c->basew) % c->incw;
 305                 if(c->inch)
 306                         *c->h -= (*c->h - c->baseh) % c->inch;
 307         }
 308         if(*c->x > sw) /* might happen on restart */
 309                 *c->x = sw - *c->w;
 310         if(*c->y > sh)
 311                 *c->y = sh - *c->h;
 312         if(c->minw && *c->w < c->minw)
 313                 *c->w = c->minw;
 314         if(c->minh && *c->h < c->minh)
 315                 *c->h = c->minh;
 316         if(c->maxw && *c->w > c->maxw)
 317                 *c->w = c->maxw;
 318         if(c->maxh && *c->h > c->maxh)
 319                 *c->h = c->maxh;
 320         if(sticky == TopRight || sticky == BotRight)
 321                 *c->x = right - *c->w;
 322         if(sticky == BotLeft || sticky == BotRight)
 323                 *c->y = bottom - *c->h;
 324
 325         resizetitle(c);
 326         XSetWindowBorderWidth(dpy, c->win, 1);
 327         XMoveResizeWindow(dpy, c->win, *c->x, *c->y, *c->w, *c->h);
 328
 329         e.type = ConfigureNotify;
 330         e.event = c->win;
 331         e.window = c->win;
 332         e.x = *c->x;
 333         e.y = *c->y;
 334         e.width = *c->w;
 335         e.height = *c->h;
 336         e.border_width = c->border;
 337         e.above = None;
 338         e.override_redirect = False;
 339         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 340         XSync(dpy, False);
 341 }
 342
 343 void
 344 setgeom(Client *c)
 345 {
 346         if((arrange == dotile) && !c->isfloat) {
 347                 c->x = &c->tx;
 348                 c->y = &c->ty;
 349                 c->w = &c->tw;
 350                 c->h = &c->th;
 351         }
 352         else {
 353                 c->x = &c->fx;
 354                 c->y = &c->fy;
 355                 c->w = &c->fw;
 356                 c->h = &c->fh;
 357         }
 358 }
 359
 360 void
 361 setsize(Client *c)
 362 {
 363         XSizeHints size;
 364         long msize;
 365         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 366                 size.flags = PSize;
 367         c->flags = size.flags;
 368         if(c->flags & PBaseSize) {
 369                 c->basew = size.base_width;
 370                 c->baseh = size.base_height;
 371         }
 372         else
 373                 c->basew = c->baseh = 0;
 374         if(c->flags & PResizeInc) {
 375                 c->incw = size.width_inc;
 376                 c->inch = size.height_inc;
 377         }
 378         else
 379                 c->incw = c->inch = 0;
 380         if(c->flags & PMaxSize) {
 381                 c->maxw = size.max_width;
 382                 c->maxh = size.max_height;
 383         }
 384         else
 385                 c->maxw = c->maxh = 0;
 386         if(c->flags & PMinSize) {
 387                 c->minw = size.min_width;
 388                 c->minh = size.min_height;
 389         }
 390         else
 391                 c->minw = c->minh = 0;
 392         if(c->flags & PWinGravity)
 393                 c->grav = size.win_gravity;
 394         else
 395                 c->grav = NorthWestGravity;
 396 }
 397
 398 void
 399 settitle(Client *c)
 400 {
 401         XTextProperty name;
 402         int n;
 403         char **list = NULL;
 404
 405         name.nitems = 0;
 406         c->name[0] = 0;
 407         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 408         if(!name.nitems)
 409                 XGetWMName(dpy, c->win, &name);
 410         if(!name.nitems)
 411                 return;
 412         if(name.encoding == XA_STRING)
 413                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 414         else {
 415                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 416                                 && n > 0 && *list)
 417                 {
 418                         strncpy(c->name, *list, sizeof(c->name));
 419                         XFreeStringList(list);
 420                 }
 421         }
 422         XFree(name.value);
 423         resizetitle(c);
 424 }
 425
 426 void
 427 unmanage(Client *c)
 428 {
 429         Client **l;
 430
 431         XGrabServer(dpy);
 432         XSetErrorHandler(xerrordummy);
 433
 434         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 435         XDestroyWindow(dpy, c->title);
 436
 437         for(l = &clients; *l && *l != c; l = &(*l)->next);
 438         *l = c->next;
 439         for(l = &clients; *l; l = &(*l)->next)
 440                 if((*l)->revert == c)
 441                         (*l)->revert = NULL;
 442         if(sel == c)
 443                 sel = sel->revert ? sel->revert : clients;
 444
 445         free(c);
 446
 447         XSync(dpy, False);
 448         XSetErrorHandler(xerror);
 449         XUngrabServer(dpy);
 450         arrange(NULL);
 451         if(sel)
 452                 focus(sel);
 453 }
 454
 455 void
 456 zoom(Arg *arg)
 457 {
 458         Client *c;
 459
 460         if(!sel)
 461                 return;
 462
 463         if(sel == getnext(clients, tsel) && sel->next)  {
 464                 if((c = getnext(sel->next, tsel)))
 465                         sel = c;
 466         }
 467
 468         pop(sel);
 469         focus(sel);
 470 }