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