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, MODKEY, c->win, False, ButtonPressMask,
 243                         GrabModeAsync, GrabModeSync, None, None);
 244         XGrabButton(dpy, Button2, MODKEY, c->win, False, ButtonPressMask,
 245                         GrabModeAsync, GrabModeSync, None, None);
 246         XGrabButton(dpy, Button3, MODKEY, c->win, False, ButtonPressMask,
 247                         GrabModeAsync, GrabModeSync, None, None);
 248
 249         if(!c->isfloat)
 250                 c->isfloat = trans || (c->maxw && c->minw &&
 251                                 (c->maxw == c->minw) && (c->maxh == c->minh));
 252
 253
 254         setgeom(c);
 255         settitle(c);
 256
 257         arrange(NULL);
 258
 259         /* mapping the window now prevents flicker */
 260         if(c->tags[tsel]) {
 261                 XMapRaised(dpy, c->win);
 262                 XMapRaised(dpy, c->title);
 263                 focus(c);
 264         }
 265         else {
 266                 XMapRaised(dpy, c->win);
 267                 XMapRaised(dpy, c->title);
 268         }
 269 }
 270
 271 void
 272 maximize(Arg *arg)
 273 {
 274         if(!sel)
 275                 return;
 276         *sel->x = sx;
 277         *sel->y = sy + bh;
 278         *sel->w = sw - 2 * sel->border;
 279         *sel->h = sh - 2 * sel->border - bh;
 280         higher(sel);
 281         resize(sel, False, TopLeft);
 282 }
 283
 284 void
 285 pop(Client *c)
 286 {
 287         Client **l;
 288         for(l = &clients; *l && *l != c; l = &(*l)->next);
 289         *l = c->next;
 290
 291         c->next = clients; /* pop */
 292         clients = c;
 293         arrange(NULL);
 294 }
 295
 296 void
 297 resize(Client *c, Bool inc, Corner sticky)
 298 {
 299         XConfigureEvent e;
 300         int right = *c->x + *c->w;
 301         int bottom = *c->y + *c->h;
 302
 303         if(inc) {
 304                 if(c->incw)
 305                         *c->w -= (*c->w - c->basew) % c->incw;
 306                 if(c->inch)
 307                         *c->h -= (*c->h - c->baseh) % c->inch;
 308         }
 309         if(*c->x > sw) /* might happen on restart */
 310                 *c->x = sw - *c->w;
 311         if(*c->y > sh)
 312                 *c->y = sh - *c->h;
 313         if(c->minw && *c->w < c->minw)
 314                 *c->w = c->minw;
 315         if(c->minh && *c->h < c->minh)
 316                 *c->h = c->minh;
 317         if(c->maxw && *c->w > c->maxw)
 318                 *c->w = c->maxw;
 319         if(c->maxh && *c->h > c->maxh)
 320                 *c->h = c->maxh;
 321         if(sticky == TopRight || sticky == BotRight)
 322                 *c->x = right - *c->w;
 323         if(sticky == BotLeft || sticky == BotRight)
 324                 *c->y = bottom - *c->h;
 325
 326         resizetitle(c);
 327         XSetWindowBorderWidth(dpy, c->win, 1);
 328         XMoveResizeWindow(dpy, c->win, *c->x, *c->y, *c->w, *c->h);
 329
 330         e.type = ConfigureNotify;
 331         e.event = c->win;
 332         e.window = c->win;
 333         e.x = *c->x;
 334         e.y = *c->y;
 335         e.width = *c->w;
 336         e.height = *c->h;
 337         e.border_width = c->border;
 338         e.above = None;
 339         e.override_redirect = False;
 340         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 341         XSync(dpy, False);
 342 }
 343
 344 void
 345 setgeom(Client *c)
 346 {
 347         if((arrange == dotile) && !c->isfloat) {
 348                 c->x = &c->tx;
 349                 c->y = &c->ty;
 350                 c->w = &c->tw;
 351                 c->h = &c->th;
 352         }
 353         else {
 354                 c->x = &c->fx;
 355                 c->y = &c->fy;
 356                 c->w = &c->fw;
 357                 c->h = &c->fh;
 358         }
 359 }
 360
 361 void
 362 setsize(Client *c)
 363 {
 364         XSizeHints size;
 365         long msize;
 366         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 367                 size.flags = PSize;
 368         c->flags = size.flags;
 369         if(c->flags & PBaseSize) {
 370                 c->basew = size.base_width;
 371                 c->baseh = size.base_height;
 372         }
 373         else
 374                 c->basew = c->baseh = 0;
 375         if(c->flags & PResizeInc) {
 376                 c->incw = size.width_inc;
 377                 c->inch = size.height_inc;
 378         }
 379         else
 380                 c->incw = c->inch = 0;
 381         if(c->flags & PMaxSize) {
 382                 c->maxw = size.max_width;
 383                 c->maxh = size.max_height;
 384         }
 385         else
 386                 c->maxw = c->maxh = 0;
 387         if(c->flags & PMinSize) {
 388                 c->minw = size.min_width;
 389                 c->minh = size.min_height;
 390         }
 391         else
 392                 c->minw = c->minh = 0;
 393         if(c->flags & PWinGravity)
 394                 c->grav = size.win_gravity;
 395         else
 396                 c->grav = NorthWestGravity;
 397 }
 398
 399 void
 400 settitle(Client *c)
 401 {
 402         XTextProperty name;
 403         int n;
 404         char **list = NULL;
 405
 406         name.nitems = 0;
 407         c->name[0] = 0;
 408         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 409         if(!name.nitems)
 410                 XGetWMName(dpy, c->win, &name);
 411         if(!name.nitems)
 412                 return;
 413         if(name.encoding == XA_STRING)
 414                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 415         else {
 416                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 417                                 && n > 0 && *list)
 418                 {
 419                         strncpy(c->name, *list, sizeof(c->name));
 420                         XFreeStringList(list);
 421                 }
 422         }
 423         XFree(name.value);
 424         resizetitle(c);
 425 }
 426
 427 void
 428 unmanage(Client *c)
 429 {
 430         Client **l;
 431
 432         XGrabServer(dpy);
 433         XSetErrorHandler(xerrordummy);
 434
 435         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 436         XDestroyWindow(dpy, c->title);
 437
 438         for(l = &clients; *l && *l != c; l = &(*l)->next);
 439         *l = c->next;
 440         for(l = &clients; *l; l = &(*l)->next)
 441                 if((*l)->revert == c)
 442                         (*l)->revert = NULL;
 443         if(sel == c)
 444                 sel = sel->revert ? sel->revert : clients;
 445
 446         free(c);
 447
 448         XSync(dpy, False);
 449         XSetErrorHandler(xerror);
 450         XUngrabServer(dpy);
 451         arrange(NULL);
 452         if(sel)
 453                 focus(sel);
 454 }
 455
 456 void
 457 zoom(Arg *arg)
 458 {
 459         Client *c;
 460
 461         if(!sel)
 462                 return;
 463
 464         if(sel == getnext(clients, tsel) && sel->next)  {
 465                 if((c = getnext(sel->next, tsel)))
 466                         sel = c;
 467         }
 468
 469         pop(sel);
 470         focus(sel);
 471 }