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(!(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->x = c->tx = wa->x;
 207         c->y = c->ty = wa->y;
 208         c->w = c->tw = wa->width;
 209         c->h = wa->height;
 210         c->th = bh;
 211
 212         if(c->y < bh)
 213                 c->y = c->ty = bh;
 214
 215         c->border = 1;
 216         c->proto = getproto(c->win);
 217         setsize(c);
 218         XSelectInput(dpy, c->win,
 219                         StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 220         XGetTransientForHint(dpy, c->win, &trans);
 221         twa.override_redirect = 1;
 222         twa.background_pixmap = ParentRelative;
 223         twa.event_mask = ExposureMask;
 224
 225         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 226                         0, DefaultDepth(dpy, screen), CopyFromParent,
 227                         DefaultVisual(dpy, screen),
 228                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 229
 230         settags(c);
 231
 232         c->next = clients;
 233         clients = c;
 234
 235         XGrabButton(dpy, Button1, ControlMask, c->win, False, ButtonPressMask,
 236                         GrabModeAsync, GrabModeSync, None, None);
 237         XGrabButton(dpy, Button1, MODKEY, c->win, False, ButtonPressMask,
 238                         GrabModeAsync, GrabModeSync, None, None);
 239         XGrabButton(dpy, Button2, MODKEY, c->win, False, ButtonPressMask,
 240                         GrabModeAsync, GrabModeSync, None, None);
 241         XGrabButton(dpy, Button3, MODKEY, c->win, False, ButtonPressMask,
 242                         GrabModeAsync, GrabModeSync, None, None);
 243
 244         if(!c->isfloat)
 245                 c->isfloat = trans || (c->maxw && c->minw &&
 246                                 (c->maxw == c->minw) && (c->maxh == c->minh));
 247
 248
 249         settitle(c);
 250         arrange(NULL);
 251
 252         /* mapping the window now prevents flicker */
 253         if(c->tags[tsel]) {
 254                 XMapRaised(dpy, c->win);
 255                 XMapRaised(dpy, c->title);
 256                 focus(c);
 257         }
 258         else {
 259                 XMapRaised(dpy, c->win);
 260                 XMapRaised(dpy, c->title);
 261         }
 262 }
 263
 264 void
 265 maximize(Arg *arg)
 266 {
 267         if(!sel)
 268                 return;
 269         sel->x = sx;
 270         sel->y = sy + bh;
 271         sel->w = sw - 2 * sel->border;
 272         sel->h = sh - 2 * sel->border - bh;
 273         higher(sel);
 274         resize(sel, False, TopLeft);
 275 }
 276
 277 void
 278 pop(Client *c)
 279 {
 280         Client **l;
 281         for(l = &clients; *l && *l != c; l = &(*l)->next);
 282         *l = c->next;
 283
 284         c->next = clients; /* pop */
 285         clients = c;
 286         arrange(NULL);
 287 }
 288
 289 void
 290 resize(Client *c, Bool inc, Corner sticky)
 291 {
 292         XConfigureEvent e;
 293         int right = c->x + c->w;
 294         int bottom = c->y + c->h;
 295
 296         if(inc) {
 297                 if(c->incw)
 298                         c->w -= (c->w - c->basew) % c->incw;
 299                 if(c->inch)
 300                         c->h -= (c->h - c->baseh) % c->inch;
 301         }
 302         if(c->x > sw) /* might happen on restart */
 303                 c->x = sw - c->w;
 304         if(c->y > sh)
 305                 c->y = sh - c->h;
 306         if(c->minw && c->w < c->minw)
 307                 c->w = c->minw;
 308         if(c->minh && c->h < c->minh)
 309                 c->h = c->minh;
 310         if(c->maxw && c->w > c->maxw)
 311                 c->w = c->maxw;
 312         if(c->maxh && c->h > c->maxh)
 313                 c->h = c->maxh;
 314         if(sticky == TopRight || sticky == BotRight)
 315                 c->x = right - c->w;
 316         if(sticky == BotLeft || sticky == BotRight)
 317                 c->y = bottom - c->h;
 318
 319         resizetitle(c);
 320         XSetWindowBorderWidth(dpy, c->win, 1);
 321         XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 322
 323         e.type = ConfigureNotify;
 324         e.event = c->win;
 325         e.window = c->win;
 326         e.x = c->x;
 327         e.y = c->y;
 328         e.width = c->w;
 329         e.height = c->h;
 330         e.border_width = c->border;
 331         e.above = None;
 332         e.override_redirect = False;
 333         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 334         XSync(dpy, False);
 335 }
 336
 337 void
 338 setsize(Client *c)
 339 {
 340         XSizeHints size;
 341         long msize;
 342         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 343                 size.flags = PSize;
 344         c->flags = size.flags;
 345         if(c->flags & PBaseSize) {
 346                 c->basew = size.base_width;
 347                 c->baseh = size.base_height;
 348         }
 349         else
 350                 c->basew = c->baseh = 0;
 351         if(c->flags & PResizeInc) {
 352                 c->incw = size.width_inc;
 353                 c->inch = size.height_inc;
 354         }
 355         else
 356                 c->incw = c->inch = 0;
 357         if(c->flags & PMaxSize) {
 358                 c->maxw = size.max_width;
 359                 c->maxh = size.max_height;
 360         }
 361         else
 362                 c->maxw = c->maxh = 0;
 363         if(c->flags & PMinSize) {
 364                 c->minw = size.min_width;
 365                 c->minh = size.min_height;
 366         }
 367         else
 368                 c->minw = c->minh = 0;
 369         if(c->flags & PWinGravity)
 370                 c->grav = size.win_gravity;
 371         else
 372                 c->grav = NorthWestGravity;
 373 }
 374
 375 void
 376 settitle(Client *c)
 377 {
 378         XTextProperty name;
 379         int n;
 380         char **list = NULL;
 381
 382         name.nitems = 0;
 383         c->name[0] = 0;
 384         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 385         if(!name.nitems)
 386                 XGetWMName(dpy, c->win, &name);
 387         if(!name.nitems)
 388                 return;
 389         if(name.encoding == XA_STRING)
 390                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 391         else {
 392                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 393                                 && n > 0 && *list)
 394                 {
 395                         strncpy(c->name, *list, sizeof(c->name));
 396                         XFreeStringList(list);
 397                 }
 398         }
 399         XFree(name.value);
 400         resizetitle(c);
 401 }
 402
 403 void
 404 unmanage(Client *c)
 405 {
 406         Client **l;
 407
 408         XGrabServer(dpy);
 409         XSetErrorHandler(xerrordummy);
 410
 411         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 412         XDestroyWindow(dpy, c->title);
 413
 414         for(l = &clients; *l && *l != c; l = &(*l)->next);
 415         *l = c->next;
 416         for(l = &clients; *l; l = &(*l)->next)
 417                 if((*l)->revert == c)
 418                         (*l)->revert = NULL;
 419         if(sel == c)
 420                 sel = sel->revert ? sel->revert : clients;
 421
 422         free(c);
 423
 424         XSync(dpy, False);
 425         XSetErrorHandler(xerror);
 426         XUngrabServer(dpy);
 427         arrange(NULL);
 428         if(sel)
 429                 focus(sel);
 430 }
 431
 432 void
 433 zoom(Arg *arg)
 434 {
 435         Client *c;
 436
 437         if(!sel)
 438                 return;
 439
 440         if(sel == getnext(clients, tsel) && sel->next)  {
 441                 if((c = getnext(sel->next, tsel)))
 442                         sel = c;
 443         }
 444
 445         pop(sel);
 446         focus(sel);
 447 }