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 grabbuttons(Client *c, Bool focus)
  15 {
  16         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  17
  18         if(focus) {
  19                 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
  20                                 GrabModeAsync, GrabModeSync, None, None);
  21                 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
  22                                 GrabModeAsync, GrabModeSync, None, None);
  23                 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
  24                                 GrabModeAsync, GrabModeSync, None, None);
  25                 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
  26                                 GrabModeAsync, GrabModeSync, None, None);
  27
  28                 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
  29                                 GrabModeAsync, GrabModeSync, None, None);
  30                 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
  31                                 GrabModeAsync, GrabModeSync, None, None);
  32                 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
  33                                 GrabModeAsync, GrabModeSync, None, None);
  34                 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
  35                                 GrabModeAsync, GrabModeSync, None, None);
  36
  37                 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
  38                                 GrabModeAsync, GrabModeSync, None, None);
  39                 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
  40                                 GrabModeAsync, GrabModeSync, None, None);
  41                 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
  42                                 GrabModeAsync, GrabModeSync, None, None);
  43                 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
  44                                 GrabModeAsync, GrabModeSync, None, None);
  45         }
  46         else
  47                 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
  48                                 GrabModeAsync, GrabModeSync, None, None);
  49
  50 }
  51
  52 static void
  53 resizetitle(Client *c)
  54 {
  55         int i;
  56
  57         c->tw = textw(c->name);
  58         if(c->tw > c->w)
  59                 c->tw = c->w + 2;
  60         c->tx = c->x + c->w - c->tw + 2;
  61         c->ty = c->y;
  62         if(isvisible(c))
  63                 XMoveResizeWindow(dpy, c->twin, c->tx, c->ty, c->tw, c->th);
  64         else
  65                 XMoveResizeWindow(dpy, c->twin, c->tx + 2 * sw, c->ty, c->tw, c->th);
  66
  67 }
  68
  69 static int
  70 xerrordummy(Display *dsply, XErrorEvent *ee)
  71 {
  72         return 0;
  73 }
  74
  75 /* extern functions */
  76
  77 void
  78 ban(Client *c)
  79 {
  80         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  81         XMoveWindow(dpy, c->twin, c->tx + 2 * sw, c->ty);
  82 }
  83
  84 void
  85 focus(Client *c)
  86 {
  87         Client *old = sel;
  88
  89         if(!issel)
  90                 return;
  91         if(!sel)
  92                 sel = c;
  93         else if(sel != c) {
  94                 if(sel->ismax)
  95                         togglemax(NULL);
  96                 sel = c;
  97                 grabbuttons(old, False);
  98                 drawtitle(old);
  99         }
 100         grabbuttons(c, True);
 101         drawtitle(c);
 102         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 103 }
 104
 105 Client *
 106 getclient(Window w)
 107 {
 108         Client *c;
 109
 110         for(c = clients; c; c = c->next)
 111                 if(c->win == w)
 112                         return c;
 113         return NULL;
 114 }
 115
 116 Client *
 117 getctitle(Window w)
 118 {
 119         Client *c;
 120
 121         for(c = clients; c; c = c->next)
 122                 if(c->twin == w)
 123                         return c;
 124         return NULL;
 125 }
 126
 127 void
 128 gravitate(Client *c, Bool invert)
 129 {
 130         int dx = 0, dy = 0;
 131
 132         switch(c->grav) {
 133         default:
 134                 break;
 135         case StaticGravity:
 136         case NorthWestGravity:
 137         case NorthGravity:
 138         case NorthEastGravity:
 139                 dy = c->border;
 140                 break;
 141         case EastGravity:
 142         case CenterGravity:
 143         case WestGravity:
 144                 dy = -(c->h / 2) + c->border;
 145                 break;
 146         case SouthEastGravity:
 147         case SouthGravity:
 148         case SouthWestGravity:
 149                 dy = -(c->h);
 150                 break;
 151         }
 152
 153         switch (c->grav) {
 154         default:
 155                 break;
 156         case StaticGravity:
 157         case NorthWestGravity:
 158         case WestGravity:
 159         case SouthWestGravity:
 160                 dx = c->border;
 161                 break;
 162         case NorthGravity:
 163         case CenterGravity:
 164         case SouthGravity:
 165                 dx = -(c->w / 2) + c->border;
 166                 break;
 167         case NorthEastGravity:
 168         case EastGravity:
 169         case SouthEastGravity:
 170                 dx = -(c->w + c->border);
 171                 break;
 172         }
 173
 174         if(invert) {
 175                 dx = -dx;
 176                 dy = -dy;
 177         }
 178         c->x += dx;
 179         c->y += dy;
 180 }
 181
 182 void
 183 killclient(Arg *arg)
 184 {
 185         if(!sel)
 186                 return;
 187         if(sel->proto & PROTODELWIN)
 188                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
 189         else
 190                 XKillClient(dpy, sel->win);
 191 }
 192
 193 void
 194 manage(Window w, XWindowAttributes *wa)
 195 {
 196         unsigned int i;
 197         Client *c, *tc;
 198         Window trans;
 199         XSetWindowAttributes twa;
 200
 201         c = emallocz(sizeof(Client));
 202         c->tags = emallocz(ntags * sizeof(Bool));
 203         c->win = w;
 204         c->x = c->tx = wa->x;
 205         c->y = c->ty = wa->y;
 206         c->w = c->tw = wa->width;
 207         c->h = wa->height;
 208         c->th = bh;
 209
 210         c->border = 0;
 211         setsize(c);
 212
 213         if(c->x + c->w + 2 > sw)
 214                 c->x = sw - c->w - 2;
 215         if(c->x < 0)
 216                 c->x = 0;
 217         if(c->y + c->h + 2 > sh)
 218                 c->y = sh - c->h - 2;
 219         if(c->h != sh && c->y < bh)
 220                 c->y = bh;
 221
 222         c->proto = getproto(c->win);
 223         XSelectInput(dpy, c->win,
 224                 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 225         XGetTransientForHint(dpy, c->win, &trans);
 226         twa.override_redirect = 1;
 227         twa.background_pixmap = ParentRelative;
 228         twa.event_mask = ExposureMask | EnterWindowMask;
 229
 230         c->twin = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 231                         0, DefaultDepth(dpy, screen), CopyFromParent,
 232                         DefaultVisual(dpy, screen),
 233                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 234
 235         if(clients)
 236                 clients->prev = c;
 237         c->next = clients;
 238         clients = c;
 239
 240         grabbuttons(c, False);
 241
 242         if((tc = getclient(trans))) /* inherit tags */
 243                 for(i = 0; i < ntags; i++)
 244                         c->tags[i] = tc->tags[i];
 245         else
 246                 settags(c);
 247         if(!c->isfloat)
 248                 c->isfloat = trans
 249                         || (c->maxw && c->minw &&
 250                                 c->maxw == c->minw && c->maxh == c->minh);
 251         settitle(c);
 252         if(isvisible(c))
 253                 sel = c;
 254         arrange(NULL);
 255         XMapWindow(dpy, c->win);
 256         XMapWindow(dpy, c->twin);
 257         if(isvisible(c))
 258                 focus(c);
 259 }
 260
 261 void
 262 resize(Client *c, Bool sizehints, Corner sticky)
 263 {
 264         int bottom = c->y + c->h;
 265         int right = c->x + c->w;
 266         XWindowChanges wc;
 267
 268         if(sizehints) {
 269                 if(c->incw)
 270                         c->w -= (c->w - c->basew) % c->incw;
 271                 if(c->inch)
 272                         c->h -= (c->h - c->baseh) % c->inch;
 273                 if(c->minw && c->w < c->minw)
 274                         c->w = c->minw;
 275                 if(c->minh && c->h < c->minh)
 276                         c->h = c->minh;
 277                 if(c->maxw && c->w > c->maxw)
 278                         c->w = c->maxw;
 279                 if(c->maxh && c->h > c->maxh)
 280                         c->h = c->maxh;
 281         }
 282         if(sticky == TopRight || sticky == BotRight)
 283                 c->x = right - c->w;
 284         if(sticky == BotLeft || sticky == BotRight)
 285                 c->y = bottom - c->h;
 286
 287         resizetitle(c);
 288         wc.x = c->x;
 289         wc.y = c->y;
 290         wc.width = c->w;
 291         wc.height = c->h;
 292         if(c->w == sw && c->h == sh)
 293                 wc.border_width = 0;
 294         else
 295                 wc.border_width = 1;
 296         XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
 297         XSync(dpy, False);
 298 }
 299
 300 void
 301 setsize(Client *c)
 302 {
 303         long msize;
 304         XSizeHints size;
 305
 306         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 307                 size.flags = PSize;
 308         c->flags = size.flags;
 309         if(c->flags & PBaseSize) {
 310                 c->basew = size.base_width;
 311                 c->baseh = size.base_height;
 312         }
 313         else
 314                 c->basew = c->baseh = 0;
 315         if(c->flags & PResizeInc) {
 316                 c->incw = size.width_inc;
 317                 c->inch = size.height_inc;
 318         }
 319         else
 320                 c->incw = c->inch = 0;
 321         if(c->flags & PMaxSize) {
 322                 c->maxw = size.max_width;
 323                 c->maxh = size.max_height;
 324         }
 325         else
 326                 c->maxw = c->maxh = 0;
 327         if(c->flags & PMinSize) {
 328                 c->minw = size.min_width;
 329                 c->minh = size.min_height;
 330         }
 331         else
 332                 c->minw = c->minh = 0;
 333         if(c->flags & PWinGravity)
 334                 c->grav = size.win_gravity;
 335         else
 336                 c->grav = NorthWestGravity;
 337 }
 338
 339 void
 340 settitle(Client *c)
 341 {
 342         char **list = NULL;
 343         int i, n;
 344         XTextProperty name;
 345
 346         name.nitems = 0;
 347         c->name[0] = 0;
 348         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 349         if(!name.nitems)
 350                 XGetWMName(dpy, c->win, &name);
 351         if(!name.nitems)
 352                 return;
 353         if(name.encoding == XA_STRING)
 354                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 355         else {
 356                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 357                                 && n > 0 && *list)
 358                 {
 359                         strncpy(c->name, *list, sizeof(c->name));
 360                         XFreeStringList(list);
 361                 }
 362         }
 363         XFree(name.value);
 364         resizetitle(c);
 365 }
 366
 367 void
 368 togglemax(Arg *arg)
 369 {
 370         int ox, oy, ow, oh;
 371         XEvent ev;
 372
 373         if(!sel)
 374                 return;
 375
 376         if((sel->ismax = !sel->ismax)) {
 377                 ox = sel->x;
 378                 oy = sel->y;
 379                 ow = sel->w;
 380                 oh = sel->h;
 381                 sel->x = sx;
 382                 sel->y = sy + bh;
 383                 sel->w = sw - 2;
 384                 sel->h = sh - 2 - bh;
 385
 386                 restack();
 387                 resize(sel, arrange == dofloat, TopLeft);
 388
 389                 sel->x = ox;
 390                 sel->y = oy;
 391                 sel->w = ow;
 392                 sel->h = oh;
 393         }
 394         else
 395                 resize(sel, False, TopLeft);
 396         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 397 }
 398
 399 void
 400 unmanage(Client *c)
 401 {
 402         Client *tc;
 403         Window trans;
 404         XGrabServer(dpy);
 405         XSetErrorHandler(xerrordummy);
 406
 407         XGetTransientForHint(dpy, c->win, &trans);
 408
 409         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 410         XDestroyWindow(dpy, c->twin);
 411
 412         if(c->prev)
 413                 c->prev->next = c->next;
 414         if(c->next)
 415                 c->next->prev = c->prev;
 416         if(c == clients)
 417                 clients = c->next;
 418         if(sel == c) {
 419                 if(trans && (tc = getclient(trans)) && isvisible(tc))
 420                         sel = tc;
 421                 else
 422                         sel = getnext(clients);
 423         }
 424         free(c->tags);
 425         free(c);
 426
 427         XSync(dpy, False);
 428         XSetErrorHandler(xerror);
 429         XUngrabServer(dpy);
 430         if(sel)
 431                 focus(sel);
 432         arrange(NULL);
 433 }