client.c

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