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 #include <stdlib.h>
   7 #include <string.h>
   8 #include <X11/Xatom.h>
   9 #include <X11/Xutil.h>
  10
  11 /* static functions */
  12
  13 static void
  14 resizetitle(Client *c)
  15 {
  16         int i;
  17
  18         c->tw = 0;
  19         for(i = 0; i < ntags; i++)
  20                 if(c->tags[i])
  21                         c->tw += textw(tags[i]);
  22         c->tw += textw(c->name);
  23         if(c->tw > c->w)
  24                 c->tw = c->w + 2;
  25         c->tx = c->x + c->w - c->tw + 2;
  26         c->ty = c->y;
  27         if(isvisible(c))
  28                 XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
  29         else
  30                 XMoveResizeWindow(dpy, c->title, c->tx + 2 * sw, c->ty, c->tw, c->th);
  31
  32 }
  33
  34 static int
  35 xerrordummy(Display *dsply, XErrorEvent *ee)
  36 {
  37         return 0;
  38 }
  39
  40 /* extern functions */
  41
  42 void
  43 ban(Client *c)
  44 {
  45         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  46         XMoveWindow(dpy, c->title, c->tx + 2 * sw, c->ty);
  47 }
  48
  49 void
  50 focus(Client *c)
  51 {
  52         Client *old = sel;
  53
  54         if (!issel)
  55                 return;
  56         if(sel && sel->ismax)
  57                 togglemax(NULL);
  58         sel = c;
  59         if(old && old != c)
  60                 drawtitle(old);
  61         drawtitle(c);
  62         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  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)))
  74                 c = getnext(clients);
  75         if(c) {
  76                 focus(c);
  77                 restack();
  78         }
  79 }
  80
  81 void
  82 focusprev(Arg *arg)
  83 {
  84         Client *c;
  85
  86         if(!sel)
  87                 return;
  88
  89         if(!(c = getprev(sel->prev))) {
  90                 for(c = clients; c && c->next; c = c->next);
  91                 c = getprev(c);
  92         }
  93         if(c) {
  94                 focus(c);
  95                 restack();
  96         }
  97 }
  98
  99 Client *
 100 getclient(Window w)
 101 {
 102         Client *c;
 103
 104         for(c = clients; c; c = c->next)
 105                 if(c->win == w)
 106                         return c;
 107         return NULL;
 108 }
 109
 110 Client *
 111 getctitle(Window w)
 112 {
 113         Client *c;
 114
 115         for(c = clients; c; c = c->next)
 116                 if(c->title == w)
 117                         return c;
 118         return NULL;
 119 }
 120
 121 void
 122 gravitate(Client *c, Bool invert)
 123 {
 124         int dx = 0, dy = 0;
 125
 126         switch(c->grav) {
 127         default:
 128                 break;
 129         case StaticGravity:
 130         case NorthWestGravity:
 131         case NorthGravity:
 132         case NorthEastGravity:
 133                 dy = c->border;
 134                 break;
 135         case EastGravity:
 136         case CenterGravity:
 137         case WestGravity:
 138                 dy = -(c->h / 2) + c->border;
 139                 break;
 140         case SouthEastGravity:
 141         case SouthGravity:
 142         case SouthWestGravity:
 143                 dy = -(c->h);
 144                 break;
 145         }
 146
 147         switch (c->grav) {
 148         default:
 149                 break;
 150         case StaticGravity:
 151         case NorthWestGravity:
 152         case WestGravity:
 153         case SouthWestGravity:
 154                 dx = c->border;
 155                 break;
 156         case NorthGravity:
 157         case CenterGravity:
 158         case SouthGravity:
 159                 dx = -(c->w / 2) + c->border;
 160                 break;
 161         case NorthEastGravity:
 162         case EastGravity:
 163         case SouthEastGravity:
 164                 dx = -(c->w + c->border);
 165                 break;
 166         }
 167
 168         if(invert) {
 169                 dx = -dx;
 170                 dy = -dy;
 171         }
 172         c->x += dx;
 173         c->y += dy;
 174 }
 175
 176 void
 177 killclient(Arg *arg)
 178 {
 179         if(!sel)
 180                 return;
 181         if(sel->proto & PROTODELWIN)
 182                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
 183         else
 184                 XKillClient(dpy, sel->win);
 185 }
 186
 187 void
 188 manage(Window w, XWindowAttributes *wa)
 189 {
 190         Client *c, *tc;
 191         Window trans;
 192         XSetWindowAttributes twa;
 193
 194         c = emallocz(sizeof(Client));
 195         c->tags = emallocz(ntags * sizeof(Bool));
 196         c->win = w;
 197         c->x = c->tx = wa->x;
 198         c->y = c->ty = wa->y;
 199         c->w = c->tw = wa->width;
 200         c->h = wa->height;
 201         c->th = bh;
 202
 203         c->border = 0;
 204         setsize(c);
 205
 206         if(c->h != sh && c->y < bh)
 207                 c->y = c->ty = bh;
 208
 209         c->proto = getproto(c->win);
 210         XSelectInput(dpy, c->win,
 211                 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 212         XGetTransientForHint(dpy, c->win, &trans);
 213         twa.override_redirect = 1;
 214         twa.background_pixmap = ParentRelative;
 215         twa.event_mask = ExposureMask | EnterWindowMask;
 216
 217         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 218                         0, DefaultDepth(dpy, screen), CopyFromParent,
 219                         DefaultVisual(dpy, screen),
 220                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 221
 222         if(clients)
 223                 clients->prev = c;
 224         c->next = clients;
 225         clients = c;
 226
 227         XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
 228                         GrabModeAsync, GrabModeSync, None, None);
 229         XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
 230                         GrabModeAsync, GrabModeSync, None, None);
 231         XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
 232                         GrabModeAsync, GrabModeSync, None, None);
 233         XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
 234                         GrabModeAsync, GrabModeSync, None, None);
 235
 236         XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
 237                         GrabModeAsync, GrabModeSync, None, None);
 238         XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
 239                         GrabModeAsync, GrabModeSync, None, None);
 240         XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
 241                         GrabModeAsync, GrabModeSync, None, None);
 242         XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
 243                         GrabModeAsync, GrabModeSync, None, None);
 244
 245         XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
 246                         GrabModeAsync, GrabModeSync, None, None);
 247         XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
 248                         GrabModeAsync, GrabModeSync, None, None);
 249         XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
 250                         GrabModeAsync, GrabModeSync, None, None);
 251         XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
 252                         GrabModeAsync, GrabModeSync, None, None);
 253
 254         settags(c);
 255         if(!c->isfloat)
 256                 c->isfloat = trans
 257                         || (c->maxw && c->minw &&
 258                                 c->maxw == c->minw && c->maxh == c->minh);
 259         settitle(c);
 260
 261         if(trans && (tc = getclient(trans))) {
 262                 c->x = (tc->x + tc->w / 2) - (c->w / 2);
 263                 c->y = (tc->y + tc->h / 2) - (c->h / 2);
 264                 if((c->x + c->w < 0) || (c->x >= sw))
 265                         c->x = (sw / 2) - (c->w / 2);
 266                 if((c->y + c->h < 0) || (c->y >= sh))
 267                         c->y = ((sh - bh) / 2) - (c->h / 2) + bh;
 268         }
 269         else {
 270                 c->x = (sw / 2) - (c->w / 2);
 271                 c->y = ((sh - bh) / 2) - (c->h / 2) + bh;
 272         }
 273
 274         if(isvisible(c))
 275                 sel = c;
 276         arrange(NULL);
 277         XMapWindow(dpy, c->win);
 278         XMapWindow(dpy, c->title);
 279         if(isvisible(c))
 280                 focus(c);
 281 }
 282
 283 void
 284 resize(Client *c, Bool sizehints, Corner sticky)
 285 {
 286         int bottom = c->y + c->h;
 287         int right = c->x + c->w;
 288         XWindowChanges wc;
 289
 290         if(sizehints) {
 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                 if(c->minw && c->w < c->minw)
 296                         c->w = c->minw;
 297                 if(c->minh && c->h < c->minh)
 298                         c->h = c->minh;
 299                 if(c->maxw && c->w > c->maxw)
 300                         c->w = c->maxw;
 301                 if(c->maxh && c->h > c->maxh)
 302                         c->h = c->maxh;
 303         }
 304         if(c->x > sw) /* might happen on restart */
 305                 c->x = sw - c->w;
 306         if(c->y > sh)
 307                 c->y = bottom - c->h;
 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         wc.x = c->x;
 315         wc.y = c->y;
 316         wc.width = c->w;
 317         wc.height = c->h;
 318         if(c->w == sw && c->h == sh)
 319                 wc.border_width = 0;
 320         else
 321                 wc.border_width = 1;
 322         XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
 323         XSync(dpy, False);
 324 }
 325
 326 void
 327 setsize(Client *c)
 328 {
 329         long msize;
 330         XSizeHints size;
 331
 332         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 333                 size.flags = PSize;
 334         c->flags = size.flags;
 335         if(c->flags & PBaseSize) {
 336                 c->basew = size.base_width;
 337                 c->baseh = size.base_height;
 338         }
 339         else
 340                 c->basew = c->baseh = 0;
 341         if(c->flags & PResizeInc) {
 342                 c->incw = size.width_inc;
 343                 c->inch = size.height_inc;
 344         }
 345         else
 346                 c->incw = c->inch = 0;
 347         if(c->flags & PMaxSize) {
 348                 c->maxw = size.max_width;
 349                 c->maxh = size.max_height;
 350         }
 351         else
 352                 c->maxw = c->maxh = 0;
 353         if(c->flags & PMinSize) {
 354                 c->minw = size.min_width;
 355                 c->minh = size.min_height;
 356         }
 357         else
 358                 c->minw = c->minh = 0;
 359         if(c->flags & PWinGravity)
 360                 c->grav = size.win_gravity;
 361         else
 362                 c->grav = NorthWestGravity;
 363 }
 364
 365 void
 366 settitle(Client *c)
 367 {
 368         char **list = NULL;
 369         int n;
 370         XTextProperty name;
 371
 372         name.nitems = 0;
 373         c->name[0] = 0;
 374         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 375         if(!name.nitems)
 376                 XGetWMName(dpy, c->win, &name);
 377         if(!name.nitems)
 378                 return;
 379         if(name.encoding == XA_STRING)
 380                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 381         else {
 382                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 383                                 && n > 0 && *list)
 384                 {
 385                         strncpy(c->name, *list, sizeof(c->name));
 386                         XFreeStringList(list);
 387                 }
 388         }
 389         XFree(name.value);
 390         resizetitle(c);
 391 }
 392
 393 void
 394 togglemax(Arg *arg)
 395 {
 396         int ox, oy, ow, oh;
 397         XEvent ev;
 398
 399         if(!sel)
 400                 return;
 401
 402         if((sel->ismax = !sel->ismax)) {
 403                 ox = sel->x;
 404                 oy = sel->y;
 405                 ow = sel->w;
 406                 oh = sel->h;
 407                 sel->x = sx;
 408                 sel->y = sy + bh;
 409                 sel->w = sw - 2;
 410                 sel->h = sh - 2 - bh;
 411
 412                 restack();
 413                 resize(sel, arrange == dofloat, TopLeft);
 414
 415                 sel->x = ox;
 416                 sel->y = oy;
 417                 sel->w = ow;
 418                 sel->h = oh;
 419         }
 420         else
 421                 resize(sel, False, TopLeft);
 422         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 423 }
 424
 425 void
 426 unmanage(Client *c)
 427 {
 428         XGrabServer(dpy);
 429         XSetErrorHandler(xerrordummy);
 430
 431         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 432         XDestroyWindow(dpy, c->title);
 433
 434         if(c->prev)
 435                 c->prev->next = c->next;
 436         if(c->next)
 437                 c->next->prev = c->prev;
 438         if(c == clients)
 439                 clients = c->next;
 440         if(sel == c)
 441                 sel = getnext(clients);
 442         free(c->tags);
 443         free(c);
 444
 445         XSync(dpy, False);
 446         XSetErrorHandler(xerror);
 447         XUngrabServer(dpy);
 448         if(sel)
 449                 focus(sel);
 450         arrange(NULL);
 451 }
 452
 453 void
 454 zoom(Arg *arg)
 455 {
 456         Client *c;
 457
 458         if(!sel || (arrange != dotile) || sel->isfloat || sel->ismax)
 459                 return;
 460
 461         if(sel == getnext(clients))  {
 462                 if((c = getnext(sel->next)))
 463                         sel = c;
 464                 else
 465                         return;
 466         }
 467
 468         /* pop */
 469         sel->prev->next = sel->next;
 470         if(sel->next)
 471                 sel->next->prev = sel->prev;
 472         sel->prev = NULL;
 473         clients->prev = sel;
 474         sel->next = clients;
 475         clients = sel;
 476         focus(sel);
 477         arrange(NULL);
 478 }