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         Client *c;
 196         XSetWindowAttributes twa;
 197         Window trans;
 198
 199         c = emallocz(sizeof(Client));
 200         c->win = w;
 201         c->bx = c->fx = c->tx = wa->x;
 202         c->by = c->fy = c->ty = wa->y;
 203         if(c->fy < bh)
 204                 c->by = c->fy = c->ty += bh;
 205         c->bw = c->fw = c->tw = wa->width;
 206         c->fh = c->th = wa->height;
 207         c->bh = bh;
 208         c->border = 1;
 209         c->proto = getproto(c->win);
 210         setsize(c);
 211         XSelectInput(dpy, c->win,
 212                         StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 213         XGetTransientForHint(dpy, c->win, &trans);
 214         twa.override_redirect = 1;
 215         twa.background_pixmap = ParentRelative;
 216         twa.event_mask = ExposureMask;
 217
 218         c->title = XCreateWindow(dpy, root, c->bx, c->by, c->bw, c->bh,
 219                         0, DefaultDepth(dpy, screen), CopyFromParent,
 220                         DefaultVisual(dpy, screen),
 221                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 222
 223         settags(c);
 224
 225         c->next = clients;
 226         clients = c;
 227
 228         XGrabButton(dpy, Button1, ControlMask, c->win, False, ButtonPressMask,
 229                         GrabModeAsync, GrabModeSync, None, None);
 230         XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 231                         GrabModeAsync, GrabModeSync, None, None);
 232         XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
 233                         GrabModeAsync, GrabModeSync, None, None);
 234         XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 235                         GrabModeAsync, GrabModeSync, None, None);
 236
 237         if(!c->isfloat)
 238                 c->isfloat = trans
 239                         || ((c->maxw == c->minw) && (c->maxh == c->minh));
 240
 241         setgeom(c);
 242         settitle(c);
 243
 244         arrange(NULL);
 245
 246         /* mapping the window now prevents flicker */
 247         if(c->tags[tsel]) {
 248                 XMapRaised(dpy, c->win);
 249                 XMapRaised(dpy, c->title);
 250                 focus(c);
 251         }
 252         else {
 253                 ban(c);
 254                 XMapRaised(dpy, c->win);
 255                 XMapRaised(dpy, c->title);
 256                 XSync(dpy, False);
 257         }
 258 }
 259
 260 void
 261 maximize(Arg *arg)
 262 {
 263         if(!sel)
 264                 return;
 265         *sel->x = sx;
 266         *sel->y = sy + bh;
 267         *sel->w = sw - 2 * sel->border;
 268         *sel->h = sh - 2 * sel->border - bh;
 269         higher(sel);
 270         resize(sel, False);
 271 }
 272
 273 void
 274 pop(Client *c)
 275 {
 276         Client **l;
 277         for(l = &clients; *l && *l != c; l = &(*l)->next);
 278         *l = c->next;
 279
 280         c->next = clients; /* pop */
 281         clients = c;
 282         arrange(NULL);
 283 }
 284
 285 void
 286 resize(Client *c, Bool inc)
 287 {
 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         resizetitle(c);
 309         XSetWindowBorderWidth(dpy, c->win, 1);
 310         XMoveResizeWindow(dpy, c->win, *c->x, *c->y, *c->w, *c->h);
 311         e.type = ConfigureNotify;
 312         e.event = c->win;
 313         e.window = c->win;
 314         e.x = *c->x;
 315         e.y = *c->y;
 316         e.width = *c->w;
 317         e.height = *c->h;
 318         e.border_width = c->border;
 319         e.above = None;
 320         e.override_redirect = False;
 321         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 322         XSync(dpy, False);
 323 }
 324
 325 void
 326 setgeom(Client *c)
 327 {
 328         if((arrange == dotile) && !c->isfloat) {
 329                 c->x = &c->tx;
 330                 c->y = &c->ty;
 331                 c->w = &c->tw;
 332                 c->h = &c->th;
 333         }
 334         else {
 335                 c->x = &c->fx;
 336                 c->y = &c->fy;
 337                 c->w = &c->fw;
 338                 c->h = &c->fh;
 339         }
 340 }
 341
 342 void
 343 setsize(Client *c)
 344 {
 345         XSizeHints size;
 346         long msize;
 347         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 348                 size.flags = PSize;
 349         c->flags = size.flags;
 350         if(c->flags & PBaseSize) {
 351                 c->basew = size.base_width;
 352                 c->baseh = size.base_height;
 353         }
 354         else
 355                 c->basew = c->baseh = 0;
 356         if(c->flags & PResizeInc) {
 357                 c->incw = size.width_inc;
 358                 c->inch = size.height_inc;
 359         }
 360         else
 361                 c->incw = c->inch = 0;
 362         if(c->flags & PMaxSize) {
 363                 c->maxw = size.max_width;
 364                 c->maxh = size.max_height;
 365         }
 366         else
 367                 c->maxw = c->maxh = 0;
 368         if(c->flags & PMinSize) {
 369                 c->minw = size.min_width;
 370                 c->minh = size.min_height;
 371         }
 372         else
 373                 c->minw = c->minh = 0;
 374         if(c->flags & PWinGravity)
 375                 c->grav = size.win_gravity;
 376         else
 377                 c->grav = NorthWestGravity;
 378 }
 379
 380 void
 381 settitle(Client *c)
 382 {
 383         XTextProperty name;
 384         int n;
 385         char **list = NULL;
 386
 387         name.nitems = 0;
 388         c->name[0] = 0;
 389         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 390         if(!name.nitems)
 391                 XGetWMName(dpy, c->win, &name);
 392         if(!name.nitems)
 393                 return;
 394         if(name.encoding == XA_STRING)
 395                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 396         else {
 397                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 398                                 && n > 0 && *list)
 399                 {
 400                         strncpy(c->name, *list, sizeof(c->name));
 401                         XFreeStringList(list);
 402                 }
 403         }
 404         XFree(name.value);
 405         resizetitle(c);
 406 }
 407
 408 void
 409 unmanage(Client *c)
 410 {
 411         Client **l;
 412
 413         XGrabServer(dpy);
 414         XSetErrorHandler(xerrordummy);
 415
 416         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 417         XDestroyWindow(dpy, c->title);
 418
 419         for(l = &clients; *l && *l != c; l = &(*l)->next);
 420         *l = c->next;
 421         for(l = &clients; *l; l = &(*l)->next)
 422                 if((*l)->revert == c)
 423                         (*l)->revert = NULL;
 424         if(sel == c)
 425                 sel = sel->revert ? sel->revert : clients;
 426
 427         free(c);
 428
 429         XSync(dpy, False);
 430         XSetErrorHandler(xerror);
 431         XUngrabServer(dpy);
 432         arrange(NULL);
 433         if(sel)
 434                 focus(sel);
 435 }
 436
 437 void
 438 zoom(Arg *arg)
 439 {
 440         Client *c;
 441
 442         if(!sel)
 443                 return;
 444
 445         if(sel == getnext(clients, tsel) && sel->next)  {
 446                 if((c = getnext(sel->next, tsel)))
 447                         sel = c;
 448         }
 449
 450         pop(sel);
 451         focus(sel);
 452 }