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         XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
  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->tx + 2 * sw, c->ty);
  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)))
  70                 c = getnext(clients);
  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, **l;
 196         XSetWindowAttributes twa;
 197         Window trans;
 198
 199         c = emallocz(sizeof(Client));
 200         c->win = w;
 201         c->tx = c->x = wa->x;
 202         c->ty = c->y = wa->y;
 203         if(c->y < bh)
 204                 c->ty = c->y += bh;
 205         c->tw = c->w = wa->width;
 206         c->h = wa->height;
 207         c->th = 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->tx, c->ty, c->tw, c->th,
 219                         0, DefaultDepth(dpy, screen), CopyFromParent,
 220                         DefaultVisual(dpy, screen),
 221                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 222
 223         settitle(c);
 224         settags(c);
 225
 226         for(l = &clients; *l; l = &(*l)->next);
 227         c->next = *l; /* *l == nil */
 228         *l = c;
 229
 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->dofloat)
 238                 c->dofloat = trans
 239                         || ((c->maxw == c->minw) && (c->maxh == c->minh));
 240
 241         arrange(NULL);
 242         /* mapping the window now prevents flicker */
 243         if(c->tags[tsel]) {
 244                 XMapRaised(dpy, c->win);
 245                 XMapRaised(dpy, c->title);
 246                 focus(c);
 247         }
 248         else {
 249                 ban(c);
 250                 XMapRaised(dpy, c->win);
 251                 XMapRaised(dpy, c->title);
 252         }
 253 }
 254
 255 void
 256 maximize(Arg *arg)
 257 {
 258         if(!sel)
 259                 return;
 260         sel->x = sx;
 261         sel->y = sy + bh;
 262         sel->w = sw - 2 * sel->border;
 263         sel->h = sh - 2 * sel->border - bh;
 264         higher(sel);
 265         resize(sel, False);
 266 }
 267
 268 void
 269 resize(Client *c, Bool inc)
 270 {
 271         XConfigureEvent e;
 272
 273         if(inc) {
 274                 if(c->incw)
 275                         c->w -= (c->w - c->basew) % c->incw;
 276                 if(c->inch)
 277                         c->h -= (c->h - c->baseh) % c->inch;
 278         }
 279         if(c->x > sw) /* might happen on restart */
 280                 c->x = sw - c->w;
 281         if(c->y > sh)
 282                 c->ty = c->y = sh - c->h;
 283         if(c->minw && c->w < c->minw)
 284                 c->w = c->minw;
 285         if(c->minh && c->h < c->minh)
 286                 c->h = c->minh;
 287         if(c->maxw && c->w > c->maxw)
 288                 c->w = c->maxw;
 289         if(c->maxh && c->h > c->maxh)
 290                 c->h = c->maxh;
 291         resizetitle(c);
 292         XSetWindowBorderWidth(dpy, c->win, 1);
 293         XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 294         e.type = ConfigureNotify;
 295         e.event = c->win;
 296         e.window = c->win;
 297         e.x = c->x;
 298         e.y = c->y;
 299         e.width = c->w;
 300         e.height = c->h;
 301         e.border_width = c->border;
 302         e.above = None;
 303         e.override_redirect = False;
 304         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 305         XSync(dpy, False);
 306 }
 307
 308 void
 309 setsize(Client *c)
 310 {
 311         XSizeHints size;
 312         long msize;
 313         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 314                 size.flags = PSize;
 315         c->flags = size.flags;
 316         if(c->flags & PBaseSize) {
 317                 c->basew = size.base_width;
 318                 c->baseh = size.base_height;
 319         }
 320         else
 321                 c->basew = c->baseh = 0;
 322         if(c->flags & PResizeInc) {
 323                 c->incw = size.width_inc;
 324                 c->inch = size.height_inc;
 325         }
 326         else
 327                 c->incw = c->inch = 0;
 328         if(c->flags & PMaxSize) {
 329                 c->maxw = size.max_width;
 330                 c->maxh = size.max_height;
 331         }
 332         else
 333                 c->maxw = c->maxh = 0;
 334         if(c->flags & PMinSize) {
 335                 c->minw = size.min_width;
 336                 c->minh = size.min_height;
 337         }
 338         else
 339                 c->minw = c->minh = 0;
 340         if(c->flags & PWinGravity)
 341                 c->grav = size.win_gravity;
 342         else
 343                 c->grav = NorthWestGravity;
 344 }
 345
 346 void
 347 settitle(Client *c)
 348 {
 349         XTextProperty name;
 350         int n;
 351         char **list = NULL;
 352
 353         name.nitems = 0;
 354         c->name[0] = 0;
 355         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 356         if(!name.nitems)
 357                 XGetWMName(dpy, c->win, &name);
 358         if(!name.nitems)
 359                 return;
 360         if(name.encoding == XA_STRING)
 361                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 362         else {
 363                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 364                                 && n > 0 && *list)
 365                 {
 366                         strncpy(c->name, *list, sizeof(c->name));
 367                         XFreeStringList(list);
 368                 }
 369         }
 370         XFree(name.value);
 371         resizetitle(c);
 372 }
 373
 374 void
 375 unmanage(Client *c)
 376 {
 377         Client **l;
 378
 379         XGrabServer(dpy);
 380         XSetErrorHandler(xerrordummy);
 381
 382         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 383         XDestroyWindow(dpy, c->title);
 384
 385         for(l = &clients; *l && *l != c; l = &(*l)->next);
 386         *l = c->next;
 387         for(l = &clients; *l; l = &(*l)->next)
 388                 if((*l)->revert == c)
 389                         (*l)->revert = NULL;
 390         if(sel == c)
 391                 sel = sel->revert ? sel->revert : clients;
 392
 393         free(c);
 394
 395         XSync(dpy, False);
 396         XSetErrorHandler(xerror);
 397         XUngrabServer(dpy);
 398         arrange(NULL);
 399         if(sel)
 400                 focus(sel);
 401 }
 402
 403 void
 404 zoom(Arg *arg)
 405 {
 406         Client **l, *c;
 407
 408         if(!sel)
 409                 return;
 410
 411         if(sel == getnext(clients) && sel->next)  {
 412                 if((c = getnext(sel->next)))
 413                         sel = c;
 414         }
 415
 416         for(l = &clients; *l && *l != sel; l = &(*l)->next);
 417         *l = sel->next;
 418
 419         sel->next = clients; /* pop */
 420         clients = sel;
 421         arrange(NULL);
 422         focus(sel);
 423 }