client.c

   1 /*
   2  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
   3  * See LICENSE file for license details.
   4  */
   5
   6 #include <stdlib.h>
   7 #include <stdio.h>
   8 #include <string.h>
   9 #include <X11/Xatom.h>
  10 #include <X11/Xutil.h>
  11
  12 #include "dwm.h"
  13
  14 void
  15 ban(Client *c)
  16 {
  17         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  18         XMoveWindow(dpy, c->title, c->tx + 2 * sw, c->ty);
  19 }
  20
  21 static void
  22 resizetitle(Client *c)
  23 {
  24         int i;
  25
  26         c->tw = 0;
  27         for(i = 0; i < TLast; i++)
  28                 if(c->tags[i])
  29                         c->tw += textw(c->tags[i]);
  30         c->tw += textw(c->name);
  31         if(c->tw > c->w)
  32                 c->tw = c->w + 2;
  33         c->tx = c->x + c->w - c->tw + 2;
  34         c->ty = c->y;
  35         XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
  36 }
  37
  38 void
  39 settitle(Client *c)
  40 {
  41         XTextProperty name;
  42         int n;
  43         char **list = NULL;
  44
  45         name.nitems = 0;
  46         c->name[0] = 0;
  47         XGetTextProperty(dpy, c->win, &name, net_atom[NetWMName]);
  48         if(!name.nitems)
  49                 XGetWMName(dpy, c->win, &name);
  50         if(!name.nitems)
  51                 return;
  52         if(name.encoding == XA_STRING)
  53                 strncpy(c->name, (char *)name.value, sizeof(c->name));
  54         else {
  55                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
  56                                 && n > 0 && *list)
  57                 {
  58                         strncpy(c->name, *list, sizeof(c->name));
  59                         XFreeStringList(list);
  60                 }
  61         }
  62         XFree(name.value);
  63         resizetitle(c);
  64 }
  65
  66 void
  67 setsize(Client *c)
  68 {
  69         XSizeHints size;
  70         long msize;
  71         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
  72                 size.flags = PSize;
  73         c->flags = size.flags;
  74         if(c->flags & PBaseSize) {
  75                 c->basew = size.base_width;
  76                 c->baseh = size.base_height;
  77         }
  78         else
  79                 c->basew = c->baseh = 0;
  80         if(c->flags & PResizeInc) {
  81                 c->incw = size.width_inc;
  82                 c->inch = size.height_inc;
  83         }
  84         else
  85                 c->incw = c->inch = 0;
  86         if(c->flags & PMaxSize) {
  87                 c->maxw = size.max_width;
  88                 c->maxh = size.max_height;
  89         }
  90         else
  91                 c->maxw = c->maxh = 0;
  92         if(c->flags & PMinSize) {
  93                 c->minw = size.min_width;
  94                 c->minh = size.min_height;
  95         }
  96         else
  97                 c->minw = c->minh = 0;
  98         if(c->flags & PWinGravity)
  99                 c->grav = size.win_gravity;
 100         else
 101                 c->grav = NorthWestGravity;
 102 }
 103
 104 void
 105 higher(Client *c)
 106 {
 107         XRaiseWindow(dpy, c->win);
 108         XRaiseWindow(dpy, c->title);
 109 }
 110
 111 void
 112 lower(Client *c)
 113 {
 114         XLowerWindow(dpy, c->title);
 115         XLowerWindow(dpy, c->win);
 116 }
 117
 118 void
 119 focus(Client *c)
 120 {
 121         Client *old = sel;
 122         XEvent ev;
 123
 124         XFlush(dpy);
 125         sel = c;
 126         if(old && old != c)
 127                 drawtitle(old);
 128         drawtitle(c);
 129         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 130         XFlush(dpy);
 131         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 132 }
 133
 134 void
 135 manage(Window w, XWindowAttributes *wa)
 136 {
 137         Client *c, **l;
 138         XSetWindowAttributes twa;
 139         Window trans;
 140
 141         c = emallocz(sizeof(Client));
 142         c->win = w;
 143         c->tx = c->x = wa->x;
 144         c->ty = c->y = wa->y;
 145         if(c->y < bh)
 146                 c->ty = c->y += bh;
 147         c->tw = c->w = wa->width;
 148         c->h = wa->height;
 149         c->th = bh;
 150         c->border = 1;
 151         c->proto = getproto(c->win);
 152         setsize(c);
 153         XSelectInput(dpy, c->win,
 154                         StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 155         XGetTransientForHint(dpy, c->win, &trans);
 156         twa.override_redirect = 1;
 157         twa.background_pixmap = ParentRelative;
 158         twa.event_mask = ExposureMask;
 159
 160         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 161                         0, DefaultDepth(dpy, screen), CopyFromParent,
 162                         DefaultVisual(dpy, screen),
 163                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 164
 165         settitle(c);
 166         settags(c);
 167
 168         for(l = &clients; *l; l = &(*l)->next);
 169         c->next = *l; /* *l == nil */
 170         *l = c;
 171
 172         XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 173                         GrabModeAsync, GrabModeSync, None, None);
 174         XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
 175                         GrabModeAsync, GrabModeSync, None, None);
 176         XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 177                         GrabModeAsync, GrabModeSync, None, None);
 178
 179         if(!c->dofloat)
 180                 c->dofloat = trans
 181                         || ((c->maxw == c->minw) && (c->maxh == c->minh));
 182
 183         arrange(NULL);
 184         /* mapping the window now prevents flicker */
 185         if(c->tags[tsel]) {
 186                 XMapRaised(dpy, c->win);
 187                 XMapRaised(dpy, c->title);
 188                 focus(c);
 189         }
 190         else {
 191                 ban(c);
 192                 XMapRaised(dpy, c->win);
 193                 XMapRaised(dpy, c->title);
 194         }
 195 }
 196
 197 void
 198 gravitate(Client *c, Bool invert)
 199 {
 200         int dx = 0, dy = 0;
 201
 202         switch(c->grav) {
 203         case StaticGravity:
 204         case NorthWestGravity:
 205         case NorthGravity:
 206         case NorthEastGravity:
 207                 dy = c->border;
 208                 break;
 209         case EastGravity:
 210         case CenterGravity:
 211         case WestGravity:
 212                 dy = -(c->h / 2) + c->border;
 213                 break;
 214         case SouthEastGravity:
 215         case SouthGravity:
 216         case SouthWestGravity:
 217                 dy = -c->h;
 218                 break;
 219         default:
 220                 break;
 221         }
 222
 223         switch (c->grav) {
 224         case StaticGravity:
 225         case NorthWestGravity:
 226         case WestGravity:
 227         case SouthWestGravity:
 228                 dx = c->border;
 229                 break;
 230         case NorthGravity:
 231         case CenterGravity:
 232         case SouthGravity:
 233                 dx = -(c->w / 2) + c->border;
 234                 break;
 235         case NorthEastGravity:
 236         case EastGravity:
 237         case SouthEastGravity:
 238                 dx = -(c->w + c->border);
 239                 break;
 240         default:
 241                 break;
 242         }
 243
 244         if(invert) {
 245                 dx = -dx;
 246                 dy = -dy;
 247         }
 248         c->x += dx;
 249         c->y += dy;
 250 }
 251
 252
 253 void
 254 resize(Client *c, Bool inc)
 255 {
 256         XConfigureEvent e;
 257
 258         if(inc) {
 259                 if(c->incw)
 260                         c->w -= (c->w - c->basew) % c->incw;
 261                 if(c->inch)
 262                         c->h -= (c->h - c->baseh) % c->inch;
 263         }
 264         if(c->x > sw) /* might happen on restart */
 265                 c->x = sw - c->w;
 266         if(c->y > sh)
 267                 c->ty = c->y = sh - c->h;
 268         if(c->minw && c->w < c->minw)
 269                 c->w = c->minw;
 270         if(c->minh && c->h < c->minh)
 271                 c->h = c->minh;
 272         if(c->maxw && c->w > c->maxw)
 273                 c->w = c->maxw;
 274         if(c->maxh && c->h > c->maxh)
 275                 c->h = c->maxh;
 276         resizetitle(c);
 277         XSetWindowBorderWidth(dpy, c->win, 1);
 278         XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 279         e.type = ConfigureNotify;
 280         e.event = c->win;
 281         e.window = c->win;
 282         e.x = c->x;
 283         e.y = c->y;
 284         e.width = c->w;
 285         e.height = c->h;
 286         e.border_width = c->border;
 287         e.above = None;
 288         e.override_redirect = False;
 289         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 290         XFlush(dpy);
 291 }
 292
 293 static int
 294 xerrordummy(Display *dsply, XErrorEvent *ee)
 295 {
 296         return 0;
 297 }
 298
 299 void
 300 unmanage(Client *c)
 301 {
 302         Client **l;
 303
 304         XGrabServer(dpy);
 305         XSetErrorHandler(xerrordummy);
 306
 307         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 308         XDestroyWindow(dpy, c->title);
 309
 310         for(l = &clients; *l && *l != c; l = &(*l)->next);
 311         *l = c->next;
 312         for(l = &clients; *l; l = &(*l)->next)
 313                 if((*l)->revert == c)
 314                         (*l)->revert = NULL;
 315         if(sel == c)
 316                 sel = sel->revert ? sel->revert : clients;
 317
 318         free(c);
 319
 320         XFlush(dpy);
 321         XSetErrorHandler(xerror);
 322         XUngrabServer(dpy);
 323         arrange(NULL);
 324         if(sel)
 325                 focus(sel);
 326 }
 327
 328 Client *
 329 getctitle(Window w)
 330 {
 331         Client *c;
 332         for(c = clients; c; c = c->next)
 333                 if(c->title == w)
 334                         return c;
 335         return NULL;
 336 }
 337
 338 Client *
 339 getclient(Window w)
 340 {
 341         Client *c;
 342         for(c = clients; c; c = c->next)
 343                 if(c->win == w)
 344                         return c;
 345         return NULL;
 346 }
 347
 348 void
 349 zoom(Arg *arg)
 350 {
 351         Client **l, *c;
 352
 353         if(!sel)
 354                 return;
 355
 356         if(sel == getnext(clients) && sel->next)  {
 357                 if((c = getnext(sel->next)))
 358                         sel = c;
 359         }
 360
 361         for(l = &clients; *l && *l != sel; l = &(*l)->next);
 362         *l = sel->next;
 363
 364         sel->next = clients; /* pop */
 365         clients = sel;
 366         arrange(NULL);
 367         focus(sel);
 368 }
 369
 370 void
 371 maximize(Arg *arg)
 372 {
 373         if(!sel)
 374                 return;
 375         sel->x = sx;
 376         sel->y = sy + bh;
 377         sel->w = sw - 2 * sel->border;
 378         sel->h = sh - 2 * sel->border - bh;
 379         higher(sel);
 380         resize(sel, False);
 381 }
 382
 383 void
 384 focusprev(Arg *arg)
 385 {
 386         Client *c;
 387
 388         if(!sel)
 389                 return;
 390
 391         if((c = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
 392                 higher(c);
 393                 focus(c);
 394         }
 395 }
 396
 397 void
 398 focusnext(Arg *arg)
 399 {
 400         Client *c;
 401
 402         if(!sel)
 403                 return;
 404
 405         if(!(c = getnext(sel->next)))
 406                 c = getnext(clients);
 407         if(c) {
 408                 higher(c);
 409                 c->revert = sel;
 410                 focus(c);
 411         }
 412 }
 413
 414 void
 415 killclient(Arg *arg)
 416 {
 417         if(!sel)
 418                 return;
 419         if(sel->proto & WM_PROTOCOL_DELWIN)
 420                 sendevent(sel->win, wm_atom[WMProtocols], wm_atom[WMDelete]);
 421         else
 422                 XKillClient(dpy, sel->win);
 423 }