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         if (!issel)
  53                 return;
  54         Client *old = sel;
  55         XEvent ev;
  56
  57         sel = c;
  58         if(old && old != c)
  59                 drawtitle(old);
  60         drawtitle(c);
  61         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  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                 focus(c);
  79                 restack();
  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                 focus(c);
 100                 restack();
 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 killclient(Arg *arg)
 183 {
 184         if(!sel)
 185                 return;
 186         if(sel->proto & PROTODELWIN)
 187                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
 188         else
 189                 XKillClient(dpy, sel->win);
 190 }
 191
 192 void
 193 manage(Window w, XWindowAttributes *wa)
 194 {
 195         Client *c;
 196         Window trans;
 197         XSetWindowAttributes twa;
 198
 199         c = emallocz(sizeof(Client));
 200         c->tags = emallocz(ntags * sizeof(Bool));
 201         c->win = w;
 202         c->x = c->tx = wa->x;
 203         c->y = c->ty = wa->y;
 204         c->w = c->tw = wa->width;
 205         c->h = wa->height;
 206         c->th = bh;
 207
 208         c->border = 0;
 209         setsize(c);
 210
 211         if(c->h != sh && c->y < bh)
 212                 c->y = c->ty = bh;
 213
 214         c->proto = getproto(c->win);
 215         XSelectInput(dpy, c->win,
 216                 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 217         XGetTransientForHint(dpy, c->win, &trans);
 218         twa.override_redirect = 1;
 219         twa.background_pixmap = ParentRelative;
 220         twa.event_mask = ExposureMask | EnterWindowMask;
 221
 222         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 223                         0, DefaultDepth(dpy, screen), CopyFromParent,
 224                         DefaultVisual(dpy, screen),
 225                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 226
 227         if(clients)
 228                 clients->prev = c;
 229         c->next = clients;
 230         clients = c;
 231
 232         XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
 233                         GrabModeAsync, GrabModeSync, None, None);
 234         XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
 235                         GrabModeAsync, GrabModeSync, None, None);
 236         XGrabButton(dpy, Button1, MODKEY | NUMLOCKMASK, c->win, False, BUTTONMASK,
 237                         GrabModeAsync, GrabModeSync, None, None);
 238         XGrabButton(dpy, Button1, MODKEY | NUMLOCKMASK | LockMask, c->win, False, BUTTONMASK,
 239                         GrabModeAsync, GrabModeSync, None, None);
 240
 241         XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
 242                         GrabModeAsync, GrabModeSync, None, None);
 243         XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
 244                         GrabModeAsync, GrabModeSync, None, None);
 245         XGrabButton(dpy, Button2, MODKEY | NUMLOCKMASK, c->win, False, BUTTONMASK,
 246                         GrabModeAsync, GrabModeSync, None, None);
 247         XGrabButton(dpy, Button2, MODKEY | NUMLOCKMASK | LockMask, c->win, False, BUTTONMASK,
 248                         GrabModeAsync, GrabModeSync, None, None);
 249
 250         XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
 251                         GrabModeAsync, GrabModeSync, None, None);
 252         XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
 253                         GrabModeAsync, GrabModeSync, None, None);
 254         XGrabButton(dpy, Button3, MODKEY | NUMLOCKMASK, c->win, False, BUTTONMASK,
 255                         GrabModeAsync, GrabModeSync, None, None);
 256         XGrabButton(dpy, Button3, MODKEY | NUMLOCKMASK | LockMask, c->win, False, BUTTONMASK,
 257                         GrabModeAsync, GrabModeSync, None, None);
 258
 259         settags(c);
 260         if(!c->isfloat)
 261                 c->isfloat = trans
 262                         || (c->maxw && c->minw &&
 263                                 c->maxw == c->minw && c->maxh == c->minh);
 264         settitle(c);
 265
 266         XMapWindow(dpy, c->win);
 267         XMapWindow(dpy, c->title);
 268         if(isvisible(c))
 269                 focus(c);
 270         arrange(NULL);
 271 }
 272
 273 void
 274 resize(Client *c, Bool sizehints, Corner sticky)
 275 {
 276         int bottom = c->y + c->h;
 277         int right = c->x + c->w;
 278         /*XConfigureEvent e;*/
 279         XWindowChanges wc;
 280
 281         if(sizehints) {
 282                 if(c->incw)
 283                         c->w -= (c->w - c->basew) % c->incw;
 284                 if(c->inch)
 285                         c->h -= (c->h - c->baseh) % c->inch;
 286                 if(c->minw && c->w < c->minw)
 287                         c->w = c->minw;
 288                 if(c->minh && c->h < c->minh)
 289                         c->h = c->minh;
 290                 if(c->maxw && c->w > c->maxw)
 291                         c->w = c->maxw;
 292                 if(c->maxh && c->h > c->maxh)
 293                         c->h = c->maxh;
 294         }
 295         if(c->x > right) /* might happen on restart */
 296                 c->x = right - c->w;
 297         if(c->y > bottom)
 298                 c->y = bottom - c->h;
 299         if(sticky == TopRight || sticky == BotRight)
 300                 c->x = right - c->w;
 301         if(sticky == BotLeft || sticky == BotRight)
 302                 c->y = bottom - c->h;
 303
 304         resizetitle(c);
 305         wc.x = c->x;
 306         wc.y = c->y;
 307         wc.width = c->w;
 308         wc.height = c->h;
 309         if(c->w == sw && c->h == sh)
 310                 wc.border_width = 0;
 311         else
 312                 wc.border_width = 1;
 313         XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
 314         XSync(dpy, False);
 315 }
 316
 317 void
 318 setsize(Client *c)
 319 {
 320         long msize;
 321         XSizeHints size;
 322
 323         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 324                 size.flags = PSize;
 325         c->flags = size.flags;
 326         if(c->flags & PBaseSize) {
 327                 c->basew = size.base_width;
 328                 c->baseh = size.base_height;
 329         }
 330         else
 331                 c->basew = c->baseh = 0;
 332         if(c->flags & PResizeInc) {
 333                 c->incw = size.width_inc;
 334                 c->inch = size.height_inc;
 335         }
 336         else
 337                 c->incw = c->inch = 0;
 338         if(c->flags & PMaxSize) {
 339                 c->maxw = size.max_width;
 340                 c->maxh = size.max_height;
 341         }
 342         else
 343                 c->maxw = c->maxh = 0;
 344         if(c->flags & PMinSize) {
 345                 c->minw = size.min_width;
 346                 c->minh = size.min_height;
 347         }
 348         else
 349                 c->minw = c->minh = 0;
 350         if(c->flags & PWinGravity)
 351                 c->grav = size.win_gravity;
 352         else
 353                 c->grav = NorthWestGravity;
 354 }
 355
 356 void
 357 settitle(Client *c)
 358 {
 359         char **list = NULL;
 360         int n;
 361         XTextProperty name;
 362
 363         name.nitems = 0;
 364         c->name[0] = 0;
 365         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 366         if(!name.nitems)
 367                 XGetWMName(dpy, c->win, &name);
 368         if(!name.nitems)
 369                 return;
 370         if(name.encoding == XA_STRING)
 371                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 372         else {
 373                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 374                                 && n > 0 && *list)
 375                 {
 376                         strncpy(c->name, *list, sizeof(c->name));
 377                         XFreeStringList(list);
 378                 }
 379         }
 380         XFree(name.value);
 381         resizetitle(c);
 382 }
 383
 384 void
 385 togglemax(Arg *arg)
 386 {
 387         int ox, oy, ow, oh;
 388         XEvent ev;
 389
 390         if(!sel)
 391                 return;
 392
 393         if((sel->ismax = !sel->ismax)) {
 394                 ox = sel->x;
 395                 oy = sel->y;
 396                 ow = sel->w;
 397                 oh = sel->h;
 398                 sel->x = sx;
 399                 sel->y = sy + bh;
 400                 sel->w = sw - 2;
 401                 sel->h = sh - 2 - bh;
 402
 403                 restack();
 404                 resize(sel, arrange == dofloat, TopLeft);
 405
 406                 sel->x = ox;
 407                 sel->y = oy;
 408                 sel->w = ow;
 409                 sel->h = oh;
 410         }
 411         else
 412                 resize(sel, False, TopLeft);
 413         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 414 }
 415
 416 void
 417 unmanage(Client *c)
 418 {
 419         XGrabServer(dpy);
 420         XSetErrorHandler(xerrordummy);
 421
 422         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 423         XDestroyWindow(dpy, c->title);
 424
 425         if(c->prev)
 426                 c->prev->next = c->next;
 427         if(c->next)
 428                 c->next->prev = c->prev;
 429         if(c == clients)
 430                 clients = c->next;
 431         if(sel == c)
 432                 sel = getnext(clients);
 433         free(c->tags);
 434         free(c);
 435
 436         XSync(dpy, False);
 437         XSetErrorHandler(xerror);
 438         XUngrabServer(dpy);
 439         if(sel)
 440                 focus(sel);
 441         arrange(NULL);
 442 }
 443
 444 void
 445 zoom(Arg *arg)
 446 {
 447         Client *c;
 448
 449         if(!sel || (arrange != dotile) || sel->isfloat || sel->ismax)
 450                 return;
 451
 452         if(sel == getnext(clients))  {
 453                 if((c = getnext(sel->next)))
 454                         sel = c;
 455                 else
 456                         return;
 457         }
 458
 459         /* pop */
 460         sel->prev->next = sel->next;
 461         if(sel->next)
 462                 sel->next->prev = sel->prev;
 463         sel->prev = NULL;
 464         clients->prev = sel;
 465         sel->next = clients;
 466         clients = sel;
 467         focus(sel);
 468         arrange(NULL);
 469 }