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)))
  77                 c = getnext(clients);
  78         if(c) {
  79                 higher(c);
  80                 focus(c);
  81         }
  82 }
  83
  84 void
  85 focusprev(Arg *arg)
  86 {
  87         Client *c;
  88
  89         if(!sel)
  90                 return;
  91
  92         if(sel->ismax)
  93                 togglemax(NULL);
  94
  95         if(!(c = getprev(sel->prev))) {
  96                 for(c = clients; c && c->next; c = c->next);
  97                 c = getprev(c);
  98         }
  99         if(c) {
 100                 higher(c);
 101                 focus(c);
 102         }
 103 }
 104
 105 Client *
 106 getclient(Window w)
 107 {
 108         Client *c;
 109
 110         for(c = clients; c; c = c->next)
 111                 if(c->win == w)
 112                         return c;
 113         return NULL;
 114 }
 115
 116 Client *
 117 getctitle(Window w)
 118 {
 119         Client *c;
 120
 121         for(c = clients; c; c = c->next)
 122                 if(c->title == w)
 123                         return c;
 124         return NULL;
 125 }
 126
 127 void
 128 gravitate(Client *c, Bool invert)
 129 {
 130         int dx = 0, dy = 0;
 131
 132         switch(c->grav) {
 133         default:
 134                 break;
 135         case StaticGravity:
 136         case NorthWestGravity:
 137         case NorthGravity:
 138         case NorthEastGravity:
 139                 dy = c->border;
 140                 break;
 141         case EastGravity:
 142         case CenterGravity:
 143         case WestGravity:
 144                 dy = -(c->h / 2) + c->border;
 145                 break;
 146         case SouthEastGravity:
 147         case SouthGravity:
 148         case SouthWestGravity:
 149                 dy = -(c->h);
 150                 break;
 151         }
 152
 153         switch (c->grav) {
 154         default:
 155                 break;
 156         case StaticGravity:
 157         case NorthWestGravity:
 158         case WestGravity:
 159         case SouthWestGravity:
 160                 dx = c->border;
 161                 break;
 162         case NorthGravity:
 163         case CenterGravity:
 164         case SouthGravity:
 165                 dx = -(c->w / 2) + c->border;
 166                 break;
 167         case NorthEastGravity:
 168         case EastGravity:
 169         case SouthEastGravity:
 170                 dx = -(c->w + c->border);
 171                 break;
 172         }
 173
 174         if(invert) {
 175                 dx = -dx;
 176                 dy = -dy;
 177         }
 178         c->x += dx;
 179         c->y += dy;
 180 }
 181
 182 void
 183 higher(Client *c)
 184 {
 185         XRaiseWindow(dpy, c->win);
 186         XRaiseWindow(dpy, c->title);
 187 }
 188
 189 void
 190 killclient(Arg *arg)
 191 {
 192         if(!sel)
 193                 return;
 194         if(sel->proto & WM_PROTOCOL_DELWIN)
 195                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
 196         else
 197                 XKillClient(dpy, sel->win);
 198 }
 199
 200 void
 201 lower(Client *c)
 202 {
 203         XLowerWindow(dpy, c->title);
 204         XLowerWindow(dpy, c->win);
 205 }
 206
 207 void
 208 manage(Window w, XWindowAttributes *wa)
 209 {
 210         Client *c;
 211         Window trans;
 212         XSetWindowAttributes twa;
 213
 214         c = emallocz(sizeof(Client));
 215         c->win = w;
 216         c->x = c->tx = wa->x;
 217         c->y = c->ty = wa->y;
 218         c->w = c->tw = wa->width;
 219         c->h = wa->height;
 220         c->th = bh;
 221
 222         if(c->y < bh)
 223                 c->y = c->ty = bh;
 224
 225         c->border = 1;
 226         c->proto = getproto(c->win);
 227         setsize(c);
 228         XSelectInput(dpy, c->win,
 229                 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 230         XGetTransientForHint(dpy, c->win, &trans);
 231         twa.override_redirect = 1;
 232         twa.background_pixmap = ParentRelative;
 233         twa.event_mask = ExposureMask;
 234
 235         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 236                         0, DefaultDepth(dpy, screen), CopyFromParent,
 237                         DefaultVisual(dpy, screen),
 238                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 239
 240         settags(c);
 241
 242         if(clients)
 243                 clients->prev = c;
 244         c->next = clients;
 245         clients = c;
 246
 247         XGrabButton(dpy, Button1, MODKEY, c->win, False, ButtonPressMask,
 248                         GrabModeAsync, GrabModeSync, None, None);
 249         XGrabButton(dpy, Button2, MODKEY, c->win, False, ButtonPressMask,
 250                         GrabModeAsync, GrabModeSync, None, None);
 251         XGrabButton(dpy, Button3, MODKEY, c->win, False, ButtonPressMask,
 252                         GrabModeAsync, GrabModeSync, None, None);
 253
 254         if(!c->isfloat)
 255                 c->isfloat = trans || (c->maxw && c->minw &&
 256                                 (c->maxw == c->minw) && (c->maxh == c->minh));
 257
 258
 259         settitle(c);
 260         arrange(NULL);
 261
 262         /* mapping the window now prevents flicker */
 263         XMapRaised(dpy, c->win);
 264         XMapRaised(dpy, c->title);
 265         if(c->tags[tsel])
 266                 focus(c);
 267 }
 268
 269 void
 270 resize(Client *c, Bool sizehints, Corner sticky)
 271 {
 272         int bottom = c->y + c->h;
 273         int right = c->x + c->w;
 274         XConfigureEvent e;
 275
 276         if(sizehints) {
 277                 if(c->incw)
 278                         c->w -= (c->w - c->basew) % c->incw;
 279                 if(c->inch)
 280                         c->h -= (c->h - c->baseh) % c->inch;
 281                 if(c->minw && c->w < c->minw)
 282                         c->w = c->minw;
 283                 if(c->minh && c->h < c->minh)
 284                         c->h = c->minh;
 285                 if(c->maxw && c->w > c->maxw)
 286                         c->w = c->maxw;
 287                 if(c->maxh && c->h > c->maxh)
 288                         c->h = c->maxh;
 289         }
 290         if(c->x > sw) /* might happen on restart */
 291                 c->x = sw - c->w;
 292         if(c->y > sh)
 293                 c->y = sh - c->h;
 294         if(sticky == TopRight || sticky == BotRight)
 295                 c->x = right - c->w;
 296         if(sticky == BotLeft || sticky == BotRight)
 297                 c->y = bottom - c->h;
 298
 299         resizetitle(c);
 300         XSetWindowBorderWidth(dpy, c->win, 1);
 301         XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 302
 303         e.type = ConfigureNotify;
 304         e.event = c->win;
 305         e.window = c->win;
 306         e.x = c->x;
 307         e.y = c->y;
 308         e.width = c->w;
 309         e.height = c->h;
 310         e.border_width = c->border;
 311         e.above = None;
 312         e.override_redirect = False;
 313         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 314         XSync(dpy, False);
 315 }
 316
 317 void
 318 setsize(Client *c)
 319 {
 320         long msize;
 321         XSizeHints size;
 322
 323         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 324                 size.flags = PSize;
 325         c->flags = size.flags;
 326         if(c->flags & PBaseSize) {
 327                 c->basew = size.base_width;
 328                 c->baseh = size.base_height;
 329         }
 330         else
 331                 c->basew = c->baseh = 0;
 332         if(c->flags & PResizeInc) {
 333                 c->incw = size.width_inc;
 334                 c->inch = size.height_inc;
 335         }
 336         else
 337                 c->incw = c->inch = 0;
 338         if(c->flags & PMaxSize) {
 339                 c->maxw = size.max_width;
 340                 c->maxh = size.max_height;
 341         }
 342         else
 343                 c->maxw = c->maxh = 0;
 344         if(c->flags & PMinSize) {
 345                 c->minw = size.min_width;
 346                 c->minh = size.min_height;
 347         }
 348         else
 349                 c->minw = c->minh = 0;
 350         if(c->flags & PWinGravity)
 351                 c->grav = size.win_gravity;
 352         else
 353                 c->grav = NorthWestGravity;
 354 }
 355
 356 void
 357 settitle(Client *c)
 358 {
 359         char **list = NULL;
 360         int n;
 361         XTextProperty name;
 362
 363         name.nitems = 0;
 364         c->name[0] = 0;
 365         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 366         if(!name.nitems)
 367                 XGetWMName(dpy, c->win, &name);
 368         if(!name.nitems)
 369                 return;
 370         if(name.encoding == XA_STRING)
 371                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 372         else {
 373                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 374                                 && n > 0 && *list)
 375                 {
 376                         strncpy(c->name, *list, sizeof(c->name));
 377                         XFreeStringList(list);
 378                 }
 379         }
 380         XFree(name.value);
 381         resizetitle(c);
 382 }
 383
 384 void
 385 togglemax(Arg *arg)
 386 {
 387         int ox, oy, ow, oh;
 388         XEvent ev;
 389
 390         if(!sel)
 391                 return;
 392
 393         if((sel->ismax = !sel->ismax)) {
 394                 ox = sel->x;
 395                 oy = sel->y;
 396                 ow = sel->w;
 397                 oh = sel->h;
 398                 sel->x = sx;
 399                 sel->y = sy + bh;
 400                 sel->w = sw - 2 * sel->border;
 401                 sel->h = sh - 2 * sel->border - bh;
 402
 403                 higher(sel);
 404                 resize(sel, False, TopLeft);
 405
 406                 sel->x = ox;
 407                 sel->y = oy;
 408                 sel->w = ow;
 409                 sel->h = oh;
 410         }
 411         else
 412                 resize(sel, False, TopLeft);
 413         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 414 }
 415
 416 void
 417 unmanage(Client *c)
 418 {
 419         Client **l;
 420
 421         XGrabServer(dpy);
 422         XSetErrorHandler(xerrordummy);
 423
 424         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 425         XDestroyWindow(dpy, c->title);
 426
 427         for(l = &clients; *l && *l != c; l = &(*l)->next);
 428         if(c->prev)
 429                 c->prev->next = c->next;
 430         if(c->next)
 431                 c->next->prev = c->prev;
 432         *l = c->next;
 433         if(sel == c) {
 434                 sel = getnext(c->next);
 435                 if(!sel)
 436                         sel = getprev(c->prev);
 437                 if(!sel)
 438                         sel = clients;
 439         }
 440         free(c);
 441
 442         XSync(dpy, False);
 443         XSetErrorHandler(xerror);
 444         XUngrabServer(dpy);
 445         arrange(NULL);
 446         if(sel)
 447                 focus(sel);
 448 }
 449
 450 void
 451 zoom(Arg *arg)
 452 {
 453         Client *c, **l;
 454
 455         if(!sel)
 456                 return;
 457
 458         if(sel == getnext(clients) && sel->next)  {
 459                 if((c = getnext(sel->next)))
 460                         sel = c;
 461         }
 462
 463         /* pop */
 464         for(l = &clients; *l && *l != sel; l = &(*l)->next);
 465         if(sel->prev)
 466                 sel->prev->next = sel->next;
 467         if(sel->next)
 468                 sel->next->prev = sel->prev;
 469         *l = sel->next;
 470
 471         sel->prev = NULL;
 472         if(clients)
 473                 clients->prev = sel;
 474         sel->next = clients;
 475         clients = sel;
 476         arrange(NULL);
 477         focus(sel);
 478 }