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         XFlush(dpy);
  53         sel = c;
  54         if(old && old != c)
  55                 drawtitle(old);
  56         drawtitle(c);
  57         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  58         XFlush(dpy);
  59         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  60 }
  61
  62 void
  63 focusnext(Arg *arg)
  64 {
  65         Client *c;
  66
  67         if(!sel)
  68                 return;
  69
  70         if(!(c = getnext(sel->next)))
  71                 c = getnext(clients);
  72         if(c) {
  73                 higher(c);
  74                 c->revert = sel;
  75                 focus(c);
  76         }
  77 }
  78
  79 void
  80 focusprev(Arg *arg)
  81 {
  82         Client *c;
  83
  84         if(!sel)
  85                 return;
  86
  87         if((c = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
  88                 higher(c);
  89                 focus(c);
  90         }
  91 }
  92
  93 Client *
  94 getclient(Window w)
  95 {
  96         Client *c;
  97         for(c = clients; c; c = c->next)
  98                 if(c->win == w)
  99                         return c;
 100         return NULL;
 101 }
 102
 103 Client *
 104 getctitle(Window w)
 105 {
 106         Client *c;
 107         for(c = clients; c; c = c->next)
 108                 if(c->title == w)
 109                         return c;
 110         return NULL;
 111 }
 112
 113 void
 114 gravitate(Client *c, Bool invert)
 115 {
 116         int dx = 0, dy = 0;
 117
 118         switch(c->grav) {
 119         case StaticGravity:
 120         case NorthWestGravity:
 121         case NorthGravity:
 122         case NorthEastGravity:
 123                 dy = c->border;
 124                 break;
 125         case EastGravity:
 126         case CenterGravity:
 127         case WestGravity:
 128                 dy = -(c->h / 2) + c->border;
 129                 break;
 130         case SouthEastGravity:
 131         case SouthGravity:
 132         case SouthWestGravity:
 133                 dy = -c->h;
 134                 break;
 135         default:
 136                 break;
 137         }
 138
 139         switch (c->grav) {
 140         case StaticGravity:
 141         case NorthWestGravity:
 142         case WestGravity:
 143         case SouthWestGravity:
 144                 dx = c->border;
 145                 break;
 146         case NorthGravity:
 147         case CenterGravity:
 148         case SouthGravity:
 149                 dx = -(c->w / 2) + c->border;
 150                 break;
 151         case NorthEastGravity:
 152         case EastGravity:
 153         case SouthEastGravity:
 154                 dx = -(c->w + c->border);
 155                 break;
 156         default:
 157                 break;
 158         }
 159
 160         if(invert) {
 161                 dx = -dx;
 162                 dy = -dy;
 163         }
 164         c->x += dx;
 165         c->y += dy;
 166 }
 167
 168 void
 169 higher(Client *c)
 170 {
 171         XRaiseWindow(dpy, c->win);
 172         XRaiseWindow(dpy, c->title);
 173 }
 174
 175 void
 176 killclient(Arg *arg)
 177 {
 178         if(!sel)
 179                 return;
 180         if(sel->proto & WM_PROTOCOL_DELWIN)
 181                 sendevent(sel->win, wm_atom[WMProtocols], wm_atom[WMDelete]);
 182         else
 183                 XKillClient(dpy, sel->win);
 184 }
 185
 186 void
 187 lower(Client *c)
 188 {
 189         XLowerWindow(dpy, c->title);
 190         XLowerWindow(dpy, c->win);
 191 }
 192
 193 void
 194 manage(Window w, XWindowAttributes *wa)
 195 {
 196         Client *c, **l;
 197         XSetWindowAttributes twa;
 198         Window trans;
 199
 200         c = emallocz(sizeof(Client));
 201         c->win = w;
 202         c->tx = c->x = wa->x;
 203         c->ty = c->y = wa->y;
 204         if(c->y < bh)
 205                 c->ty = c->y += bh;
 206         c->tw = c->w = wa->width;
 207         c->h = wa->height;
 208         c->th = bh;
 209         c->border = 1;
 210         c->proto = getproto(c->win);
 211         setsize(c);
 212         XSelectInput(dpy, c->win,
 213                         StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 214         XGetTransientForHint(dpy, c->win, &trans);
 215         twa.override_redirect = 1;
 216         twa.background_pixmap = ParentRelative;
 217         twa.event_mask = ExposureMask;
 218
 219         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 220                         0, DefaultDepth(dpy, screen), CopyFromParent,
 221                         DefaultVisual(dpy, screen),
 222                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 223
 224         settitle(c);
 225         settags(c);
 226
 227         for(l = &clients; *l; l = &(*l)->next);
 228         c->next = *l; /* *l == nil */
 229         *l = c;
 230
 231         XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 232                         GrabModeAsync, GrabModeSync, None, None);
 233         XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
 234                         GrabModeAsync, GrabModeSync, None, None);
 235         XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 236                         GrabModeAsync, GrabModeSync, None, None);
 237
 238         if(!c->dofloat)
 239                 c->dofloat = trans
 240                         || ((c->maxw == c->minw) && (c->maxh == c->minh));
 241
 242         arrange(NULL);
 243         /* mapping the window now prevents flicker */
 244         if(c->tags[tsel]) {
 245                 XMapRaised(dpy, c->win);
 246                 XMapRaised(dpy, c->title);
 247                 focus(c);
 248         }
 249         else {
 250                 ban(c);
 251                 XMapRaised(dpy, c->win);
 252                 XMapRaised(dpy, c->title);
 253         }
 254 }
 255
 256 void
 257 maximize(Arg *arg)
 258 {
 259         if(!sel)
 260                 return;
 261         sel->x = sx;
 262         sel->y = sy + bh;
 263         sel->w = sw - 2 * sel->border;
 264         sel->h = sh - 2 * sel->border - bh;
 265         higher(sel);
 266         resize(sel, False);
 267 }
 268
 269 void
 270 resize(Client *c, Bool inc)
 271 {
 272         XConfigureEvent e;
 273
 274         if(inc) {
 275                 if(c->incw)
 276                         c->w -= (c->w - c->basew) % c->incw;
 277                 if(c->inch)
 278                         c->h -= (c->h - c->baseh) % c->inch;
 279         }
 280         if(c->x > sw) /* might happen on restart */
 281                 c->x = sw - c->w;
 282         if(c->y > sh)
 283                 c->ty = c->y = sh - c->h;
 284         if(c->minw && c->w < c->minw)
 285                 c->w = c->minw;
 286         if(c->minh && c->h < c->minh)
 287                 c->h = c->minh;
 288         if(c->maxw && c->w > c->maxw)
 289                 c->w = c->maxw;
 290         if(c->maxh && c->h > c->maxh)
 291                 c->h = c->maxh;
 292         resizetitle(c);
 293         XSetWindowBorderWidth(dpy, c->win, 1);
 294         XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 295         e.type = ConfigureNotify;
 296         e.event = c->win;
 297         e.window = c->win;
 298         e.x = c->x;
 299         e.y = c->y;
 300         e.width = c->w;
 301         e.height = c->h;
 302         e.border_width = c->border;
 303         e.above = None;
 304         e.override_redirect = False;
 305         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 306         XFlush(dpy);
 307 }
 308
 309 void
 310 setsize(Client *c)
 311 {
 312         XSizeHints size;
 313         long msize;
 314         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 315                 size.flags = PSize;
 316         c->flags = size.flags;
 317         if(c->flags & PBaseSize) {
 318                 c->basew = size.base_width;
 319                 c->baseh = size.base_height;
 320         }
 321         else
 322                 c->basew = c->baseh = 0;
 323         if(c->flags & PResizeInc) {
 324                 c->incw = size.width_inc;
 325                 c->inch = size.height_inc;
 326         }
 327         else
 328                 c->incw = c->inch = 0;
 329         if(c->flags & PMaxSize) {
 330                 c->maxw = size.max_width;
 331                 c->maxh = size.max_height;
 332         }
 333         else
 334                 c->maxw = c->maxh = 0;
 335         if(c->flags & PMinSize) {
 336                 c->minw = size.min_width;
 337                 c->minh = size.min_height;
 338         }
 339         else
 340                 c->minw = c->minh = 0;
 341         if(c->flags & PWinGravity)
 342                 c->grav = size.win_gravity;
 343         else
 344                 c->grav = NorthWestGravity;
 345 }
 346
 347 void
 348 settitle(Client *c)
 349 {
 350         XTextProperty name;
 351         int n;
 352         char **list = NULL;
 353
 354         name.nitems = 0;
 355         c->name[0] = 0;
 356         XGetTextProperty(dpy, c->win, &name, net_atom[NetWMName]);
 357         if(!name.nitems)
 358                 XGetWMName(dpy, c->win, &name);
 359         if(!name.nitems)
 360                 return;
 361         if(name.encoding == XA_STRING)
 362                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 363         else {
 364                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 365                                 && n > 0 && *list)
 366                 {
 367                         strncpy(c->name, *list, sizeof(c->name));
 368                         XFreeStringList(list);
 369                 }
 370         }
 371         XFree(name.value);
 372         resizetitle(c);
 373 }
 374
 375 void
 376 unmanage(Client *c)
 377 {
 378         Client **l;
 379
 380         XGrabServer(dpy);
 381         XSetErrorHandler(xerrordummy);
 382
 383         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 384         XDestroyWindow(dpy, c->title);
 385
 386         for(l = &clients; *l && *l != c; l = &(*l)->next);
 387         *l = c->next;
 388         for(l = &clients; *l; l = &(*l)->next)
 389                 if((*l)->revert == c)
 390                         (*l)->revert = NULL;
 391         if(sel == c)
 392                 sel = sel->revert ? sel->revert : clients;
 393
 394         free(c);
 395
 396         XFlush(dpy);
 397         XSetErrorHandler(xerror);
 398         XUngrabServer(dpy);
 399         arrange(NULL);
 400         if(sel)
 401                 focus(sel);
 402 }
 403
 404 void
 405 zoom(Arg *arg)
 406 {
 407         Client **l, *c;
 408
 409         if(!sel)
 410                 return;
 411
 412         if(sel == getnext(clients) && sel->next)  {
 413                 if((c = getnext(sel->next)))
 414                         sel = c;
 415         }
 416
 417         for(l = &clients; *l && *l != sel; l = &(*l)->next);
 418         *l = sel->next;
 419
 420         sel->next = clients; /* pop */
 421         clients = sel;
 422         arrange(NULL);
 423         focus(sel);
 424 }