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(c->tags[tsel])
  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         XEvent ev;
  54
  55         sel = c;
  56         if(old && old != c)
  57                 drawtitle(old);
  58         drawtitle(c);
  59         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  60         XSync(dpy, False);
  61         XChangeProperty(dpy, root, netatom[NetActiveWindow], XA_WINDOW, 32,
  62                         PropModeReplace, (unsigned char *)&c->win, 1);
  63         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  64 }
  65
  66 void
  67 focusnext(Arg *arg)
  68 {
  69         Client *c;
  70
  71         if(!sel)
  72                 return;
  73
  74         if(sel->ismax)
  75                 togglemax(NULL);
  76
  77         if(!(c = getnext(sel->next)))
  78                 c = getnext(clients);
  79         if(c) {
  80                 higher(c);
  81                 focus(c);
  82         }
  83 }
  84
  85 void
  86 focusprev(Arg *arg)
  87 {
  88         Client *c;
  89
  90         if(!sel)
  91                 return;
  92
  93         if(sel->ismax)
  94                 togglemax(NULL);
  95
  96         if(!(c = getprev(sel->prev))) {
  97                 for(c = clients; c && c->next; c = c->next);
  98                 c = getprev(c);
  99         }
 100         if(c) {
 101                 higher(c);
 102                 focus(c);
 103         }
 104 }
 105
 106 Client *
 107 getclient(Window w)
 108 {
 109         Client *c;
 110
 111         for(c = clients; c; c = c->next)
 112                 if(c->win == w)
 113                         return c;
 114         return NULL;
 115 }
 116
 117 Client *
 118 getctitle(Window w)
 119 {
 120         Client *c;
 121
 122         for(c = clients; c; c = c->next)
 123                 if(c->title == w)
 124                         return c;
 125         return NULL;
 126 }
 127
 128 void
 129 gravitate(Client *c, Bool invert)
 130 {
 131         int dx = 0, dy = 0;
 132
 133         switch(c->grav) {
 134         default:
 135                 break;
 136         case StaticGravity:
 137         case NorthWestGravity:
 138         case NorthGravity:
 139         case NorthEastGravity:
 140                 dy = c->border;
 141                 break;
 142         case EastGravity:
 143         case CenterGravity:
 144         case WestGravity:
 145                 dy = -(c->h / 2) + c->border;
 146                 break;
 147         case SouthEastGravity:
 148         case SouthGravity:
 149         case SouthWestGravity:
 150                 dy = -(c->h);
 151                 break;
 152         }
 153
 154         switch (c->grav) {
 155         default:
 156                 break;
 157         case StaticGravity:
 158         case NorthWestGravity:
 159         case WestGravity:
 160         case SouthWestGravity:
 161                 dx = c->border;
 162                 break;
 163         case NorthGravity:
 164         case CenterGravity:
 165         case SouthGravity:
 166                 dx = -(c->w / 2) + c->border;
 167                 break;
 168         case NorthEastGravity:
 169         case EastGravity:
 170         case SouthEastGravity:
 171                 dx = -(c->w + c->border);
 172                 break;
 173         }
 174
 175         if(invert) {
 176                 dx = -dx;
 177                 dy = -dy;
 178         }
 179         c->x += dx;
 180         c->y += dy;
 181 }
 182
 183 void
 184 higher(Client *c)
 185 {
 186         XRaiseWindow(dpy, c->win);
 187         XRaiseWindow(dpy, c->title);
 188 }
 189
 190 void
 191 killclient(Arg *arg)
 192 {
 193         if(!sel)
 194                 return;
 195         if(sel->proto & PROTODELWIN)
 196                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
 197         else
 198                 XKillClient(dpy, sel->win);
 199 }
 200
 201 void
 202 lower(Client *c)
 203 {
 204         XLowerWindow(dpy, c->title);
 205         XLowerWindow(dpy, c->win);
 206 }
 207
 208 void
 209 manage(Window w, XWindowAttributes *wa)
 210 {
 211         Client *c;
 212         Window trans;
 213         XSetWindowAttributes twa;
 214
 215         c = emallocz(sizeof(Client));
 216         c->tags = emallocz(ntags * sizeof(Bool));
 217         c->win = w;
 218         c->x = c->tx = wa->x;
 219         c->y = c->ty = wa->y;
 220         c->w = c->tw = wa->width;
 221         c->h = wa->height;
 222         c->th = bh;
 223
 224         c->border = 0;
 225         setsize(c);
 226
 227         if(c->h != sh && c->y < bh)
 228                 c->y = c->ty = bh;
 229
 230         c->proto = getproto(c->win);
 231         XSelectInput(dpy, c->win,
 232                 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 233         XGetTransientForHint(dpy, c->win, &trans);
 234         twa.override_redirect = 1;
 235         twa.background_pixmap = ParentRelative;
 236         twa.event_mask = ExposureMask | EnterWindowMask;
 237
 238         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 239                         0, DefaultDepth(dpy, screen), CopyFromParent,
 240                         DefaultVisual(dpy, screen),
 241                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 242
 243         if(clients)
 244                 clients->prev = c;
 245         c->next = clients;
 246         clients = c;
 247
 248         XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
 249                         GrabModeAsync, GrabModeSync, None, None);
 250         XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
 251                         GrabModeAsync, GrabModeSync, None, None);
 252         XGrabButton(dpy, Button1, MODKEY | NUMLOCKMASK, c->win, False, BUTTONMASK,
 253                         GrabModeAsync, GrabModeSync, None, None);
 254         XGrabButton(dpy, Button1, MODKEY | NUMLOCKMASK | LockMask, c->win, False, BUTTONMASK,
 255                         GrabModeAsync, GrabModeSync, None, None);
 256
 257         XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
 258                         GrabModeAsync, GrabModeSync, None, None);
 259         XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
 260                         GrabModeAsync, GrabModeSync, None, None);
 261         XGrabButton(dpy, Button2, MODKEY | NUMLOCKMASK, c->win, False, BUTTONMASK,
 262                         GrabModeAsync, GrabModeSync, None, None);
 263         XGrabButton(dpy, Button2, MODKEY | NUMLOCKMASK | LockMask, c->win, False, BUTTONMASK,
 264                         GrabModeAsync, GrabModeSync, None, None);
 265
 266         XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
 267                         GrabModeAsync, GrabModeSync, None, None);
 268         XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
 269                         GrabModeAsync, GrabModeSync, None, None);
 270         XGrabButton(dpy, Button3, MODKEY | NUMLOCKMASK, c->win, False, BUTTONMASK,
 271                         GrabModeAsync, GrabModeSync, None, None);
 272         XGrabButton(dpy, Button3, MODKEY | NUMLOCKMASK | LockMask, c->win, False, BUTTONMASK,
 273                         GrabModeAsync, GrabModeSync, None, None);
 274
 275         settags(c);
 276         if(!c->isfloat)
 277                 c->isfloat = trans
 278                         || (c->maxw && c->minw &&
 279                                 c->maxw == c->minw && c->maxh == c->minh);
 280         settitle(c);
 281         arrange(NULL);
 282
 283         /* mapping the window now prevents flicker */
 284         XMapRaised(dpy, c->win);
 285         XMapRaised(dpy, c->title);
 286         if(c->tags[tsel])
 287                 focus(c);
 288 }
 289
 290 void
 291 resize(Client *c, Bool sizehints, Corner sticky)
 292 {
 293         int bottom = c->y + c->h;
 294         int right = c->x + c->w;
 295         /*XConfigureEvent e;*/
 296         XWindowChanges wc;
 297
 298         if(sizehints) {
 299                 if(c->incw)
 300                         c->w -= (c->w - c->basew) % c->incw;
 301                 if(c->inch)
 302                         c->h -= (c->h - c->baseh) % c->inch;
 303                 if(c->minw && c->w < c->minw)
 304                         c->w = c->minw;
 305                 if(c->minh && c->h < c->minh)
 306                         c->h = c->minh;
 307                 if(c->maxw && c->w > c->maxw)
 308                         c->w = c->maxw;
 309                 if(c->maxh && c->h > c->maxh)
 310                         c->h = c->maxh;
 311         }
 312         if(c->x > right) /* might happen on restart */
 313                 c->x = right - c->w;
 314         if(c->y > bottom)
 315                 c->y = bottom - c->h;
 316         if(sticky == TopRight || sticky == BotRight)
 317                 c->x = right - c->w;
 318         if(sticky == BotLeft || sticky == BotRight)
 319                 c->y = bottom - c->h;
 320
 321         resizetitle(c);
 322         wc.x = c->x;
 323         wc.y = c->y;
 324         wc.width = c->w;
 325         wc.height = c->h;
 326         if(c->w == sw && c->h == sh)
 327                 wc.border_width = 0;
 328         else
 329                 wc.border_width = 1;
 330         XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
 331         XSync(dpy, False);
 332 }
 333
 334 void
 335 setsize(Client *c)
 336 {
 337         long msize;
 338         XSizeHints size;
 339
 340         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 341                 size.flags = PSize;
 342         c->flags = size.flags;
 343         if(c->flags & PBaseSize) {
 344                 c->basew = size.base_width;
 345                 c->baseh = size.base_height;
 346         }
 347         else
 348                 c->basew = c->baseh = 0;
 349         if(c->flags & PResizeInc) {
 350                 c->incw = size.width_inc;
 351                 c->inch = size.height_inc;
 352         }
 353         else
 354                 c->incw = c->inch = 0;
 355         if(c->flags & PMaxSize) {
 356                 c->maxw = size.max_width;
 357                 c->maxh = size.max_height;
 358         }
 359         else
 360                 c->maxw = c->maxh = 0;
 361         if(c->flags & PMinSize) {
 362                 c->minw = size.min_width;
 363                 c->minh = size.min_height;
 364         }
 365         else
 366                 c->minw = c->minh = 0;
 367         if(c->flags & PWinGravity)
 368                 c->grav = size.win_gravity;
 369         else
 370                 c->grav = NorthWestGravity;
 371 }
 372
 373 void
 374 settitle(Client *c)
 375 {
 376         char **list = NULL;
 377         int n;
 378         XTextProperty name;
 379
 380         name.nitems = 0;
 381         c->name[0] = 0;
 382         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 383         if(!name.nitems)
 384                 XGetWMName(dpy, c->win, &name);
 385         if(!name.nitems)
 386                 return;
 387         if(name.encoding == XA_STRING)
 388                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 389         else {
 390                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 391                                 && n > 0 && *list)
 392                 {
 393                         strncpy(c->name, *list, sizeof(c->name));
 394                         XFreeStringList(list);
 395                 }
 396         }
 397         XFree(name.value);
 398         resizetitle(c);
 399 }
 400
 401 void
 402 togglemax(Arg *arg)
 403 {
 404         int ox, oy, ow, oh;
 405         XEvent ev;
 406
 407         if(!sel)
 408                 return;
 409
 410         if((sel->ismax = !sel->ismax)) {
 411                 ox = sel->x;
 412                 oy = sel->y;
 413                 ow = sel->w;
 414                 oh = sel->h;
 415                 sel->x = sx;
 416                 sel->y = sy + bh;
 417                 sel->w = sw - 2;
 418                 sel->h = sh - 2 - bh;
 419
 420                 higher(sel);
 421                 resize(sel, False, TopLeft);
 422
 423                 sel->x = ox;
 424                 sel->y = oy;
 425                 sel->w = ow;
 426                 sel->h = oh;
 427         }
 428         else
 429                 resize(sel, False, TopLeft);
 430         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 431 }
 432
 433 void
 434 unmanage(Client *c)
 435 {
 436         XGrabServer(dpy);
 437         XSetErrorHandler(xerrordummy);
 438
 439         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 440         XDestroyWindow(dpy, c->title);
 441
 442         if(c->prev)
 443                 c->prev->next = c->next;
 444         if(c->next)
 445                 c->next->prev = c->prev;
 446         if(c == clients)
 447                 clients = c->next;
 448         if(sel == c) {
 449                 sel = getnext(c->next);
 450                 if(!sel)
 451                         sel = getprev(c->prev);
 452                 if(!sel)
 453                         sel = clients;
 454         }
 455         free(c->tags);
 456         free(c);
 457
 458         XSync(dpy, False);
 459         XSetErrorHandler(xerror);
 460         XUngrabServer(dpy);
 461         arrange(NULL);
 462         if(sel)
 463                 focus(sel);
 464         else
 465                 XChangeProperty(dpy, root, netatom[NetActiveWindow], XA_WINDOW, 32,
 466                                 PropModeReplace, (unsigned char *)NULL, 1);
 467 }
 468
 469 void
 470 zoom(Arg *arg)
 471 {
 472         Client *c;
 473
 474         if(!sel || (arrange != dotile) || sel->isfloat)
 475                 return;
 476
 477         if(sel == getnext(clients))  {
 478                 if((c = getnext(sel->next)))
 479                         sel = c;
 480                 else
 481                         return;
 482         }
 483
 484         /* pop */
 485         if(sel->prev)
 486                 sel->prev->next = sel->next;
 487         if(sel->next)
 488                 sel->next->prev = sel->prev;
 489         sel->prev = NULL;
 490         if(clients)
 491                 clients->prev = sel;
 492         sel->next = clients;
 493         clients = sel;
 494         arrange(NULL);
 495         focus(sel);
 496 }