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         c->tw = textw(c->name);
  56         if(c->tw > c->w)
  57                 c->tw = c->w + 2;
  58         c->tx = c->x + c->w - c->tw + 2;
  59         c->ty = c->y;
  60         if(isvisible(c))
  61                 XMoveResizeWindow(dpy, c->twin, c->tx, c->ty, c->tw, c->th);
  62         else
  63                 XMoveResizeWindow(dpy, c->twin, c->tx + 2 * sw, c->ty, c->tw, c->th);
  64
  65 }
  66
  67 static int
  68 xerrordummy(Display *dsply, XErrorEvent *ee)
  69 {
  70         return 0;
  71 }
  72
  73 /* extern functions */
  74
  75 void
  76 ban(Client *c)
  77 {
  78         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  79         XMoveWindow(dpy, c->twin, c->tx + 2 * sw, c->ty);
  80 }
  81
  82 void
  83 focus(Client *c)
  84 {
  85         Client *old;
  86
  87         if(!issel)
  88                 return;
  89         if(!sel)
  90                 sel = c;
  91         else if(sel != c) {
  92                 if(maximized)
  93                         togglemax(NULL);
  94                 old = sel;
  95                 sel = c;
  96                 if(old) {
  97                         grabbuttons(old, False);
  98                         drawtitle(old);
  99                 }
 100         }
 101         if(c) {
 102                 grabbuttons(c, True);
 103                 drawtitle(c);
 104                 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 105         }
 106         else
 107                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 108 }
 109
 110 Client *
 111 getclient(Window w)
 112 {
 113         Client *c;
 114
 115         for(c = clients; c; c = c->next)
 116                 if(c->win == w)
 117                         return c;
 118         return NULL;
 119 }
 120
 121 Client *
 122 getctitle(Window w)
 123 {
 124         Client *c;
 125
 126         for(c = clients; c; c = c->next)
 127                 if(c->twin == w)
 128                         return c;
 129         return NULL;
 130 }
 131
 132 void
 133 gravitate(Client *c, Bool invert)
 134 {
 135         int dx = 0, dy = 0;
 136
 137         switch(c->grav) {
 138         default:
 139                 break;
 140         case StaticGravity:
 141         case NorthWestGravity:
 142         case NorthGravity:
 143         case NorthEastGravity:
 144                 dy = c->border;
 145                 break;
 146         case EastGravity:
 147         case CenterGravity:
 148         case WestGravity:
 149                 dy = -(c->h / 2) + c->border;
 150                 break;
 151         case SouthEastGravity:
 152         case SouthGravity:
 153         case SouthWestGravity:
 154                 dy = -(c->h);
 155                 break;
 156         }
 157
 158         switch (c->grav) {
 159         default:
 160                 break;
 161         case StaticGravity:
 162         case NorthWestGravity:
 163         case WestGravity:
 164         case SouthWestGravity:
 165                 dx = c->border;
 166                 break;
 167         case NorthGravity:
 168         case CenterGravity:
 169         case SouthGravity:
 170                 dx = -(c->w / 2) + c->border;
 171                 break;
 172         case NorthEastGravity:
 173         case EastGravity:
 174         case SouthEastGravity:
 175                 dx = -(c->w + c->border);
 176                 break;
 177         }
 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 {
 190         if(!sel)
 191                 return;
 192         if(sel->proto & PROTODELWIN)
 193                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
 194         else
 195                 XKillClient(dpy, sel->win);
 196 }
 197
 198 void
 199 manage(Window w, XWindowAttributes *wa)
 200 {
 201         unsigned int i;
 202         Client *c;
 203         Window trans;
 204         XSetWindowAttributes twa;
 205
 206         c = emallocz(sizeof(Client));
 207         c->tags = emallocz(ntags * sizeof(Bool));
 208         c->win = w;
 209         c->x = c->tx = wa->x;
 210         c->y = c->ty = wa->y;
 211         c->w = c->tw = wa->width;
 212         c->h = wa->height;
 213         c->th = bh;
 214
 215         c->border = 0;
 216         setsize(c);
 217
 218         if(c->x + c->w + 2 > sw)
 219                 c->x = sw - c->w - 2;
 220         if(c->x < 0)
 221                 c->x = 0;
 222         if(c->y + c->h + 2 > sh)
 223                 c->y = sh - c->h - 2;
 224         if(c->h != sh && c->y < bh)
 225                 c->y = bh;
 226
 227         c->proto = getproto(c->win);
 228         XSelectInput(dpy, c->win,
 229                 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 230         XGetTransientForHint(dpy, c->win, &trans);
 231         twa.override_redirect = 1;
 232         twa.background_pixmap = ParentRelative;
 233         twa.event_mask = ExposureMask | EnterWindowMask;
 234
 235         c->twin = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 236                         0, DefaultDepth(dpy, screen), CopyFromParent,
 237                         DefaultVisual(dpy, screen),
 238                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 239
 240         grabbuttons(c, False);
 241         settags(c, getclient(trans));
 242         if(!c->isfloat)
 243                 c->isfloat = trans
 244                         || (c->maxw && c->minw &&
 245                                 c->maxw == c->minw && c->maxh == c->minh);
 246
 247         if(clients)
 248                 clients->prev = c;
 249         c->next = clients;
 250         clients = c;
 251
 252         settitle(c);
 253         ban(c);
 254         XMapWindow(dpy, c->win);
 255         XMapWindow(dpy, c->twin);
 256         if(isvisible(c))
 257                 focus(c);
 258         arrange(NULL);
 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 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         Client *c;
 372         XEvent ev;
 373
 374         if(!sel)
 375                 return;
 376
 377         if((maximized = !maximized)) {
 378                 ox = sel->x;
 379                 oy = sel->y;
 380                 ow = sel->w;
 381                 oh = sel->h;
 382                 sel->x = sx;
 383                 sel->y = sy + bh;
 384                 sel->w = sw - 2;
 385                 sel->h = sh - 2 - bh;
 386
 387                 restack();
 388                 for(c = getnext(clients); c; c = getnext(c->next))
 389                         if(c != sel)
 390                                 ban(c);
 391                 resize(sel, arrange == dofloat, TopLeft);
 392
 393                 sel->x = ox;
 394                 sel->y = oy;
 395                 sel->w = ow;
 396                 sel->h = oh;
 397         }
 398         else
 399                 arrange(NULL);
 400         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 401 }
 402
 403 void
 404 unmanage(Client *c)
 405 {
 406         Client *tc, *fc;
 407         Window trans;
 408         XGrabServer(dpy);
 409         XSetErrorHandler(xerrordummy);
 410
 411         detach(c);
 412         if(sel == c) {
 413                 XGetTransientForHint(dpy, c->win, &trans);
 414                 if(trans && (tc = getclient(trans)) && isvisible(tc))
 415                         fc = tc;
 416                 else
 417                         fc = getnext(clients);
 418                 focus(fc);
 419         }
 420
 421         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 422         XDestroyWindow(dpy, c->twin);
 423
 424         free(c->tags);
 425         free(c);
 426
 427         XSync(dpy, False);
 428         XSetErrorHandler(xerror);
 429         XUngrabServer(dpy);
 430         arrange(NULL);
 431 }