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                 if((c->isfloat || arrange == dofloat) && (c != clients)) {
 103                         detach(c);
 104                         if(clients) {
 105                                 clients->prev = c;
 106                                 c->next = clients;
 107                         }
 108                         clients = c;
 109                 }
 110                 grabbuttons(c, True);
 111                 drawtitle(c);
 112                 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 113         }
 114         else
 115                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 116 }
 117
 118 Client *
 119 getclient(Window w)
 120 {
 121         Client *c;
 122
 123         for(c = clients; c; c = c->next)
 124                 if(c->win == w)
 125                         return c;
 126         return NULL;
 127 }
 128
 129 Client *
 130 getctitle(Window w)
 131 {
 132         Client *c;
 133
 134         for(c = clients; c; c = c->next)
 135                 if(c->twin == w)
 136                         return c;
 137         return NULL;
 138 }
 139
 140 void
 141 gravitate(Client *c, Bool invert)
 142 {
 143         int dx = 0, dy = 0;
 144
 145         switch(c->grav) {
 146         default:
 147                 break;
 148         case StaticGravity:
 149         case NorthWestGravity:
 150         case NorthGravity:
 151         case NorthEastGravity:
 152                 dy = c->border;
 153                 break;
 154         case EastGravity:
 155         case CenterGravity:
 156         case WestGravity:
 157                 dy = -(c->h / 2) + c->border;
 158                 break;
 159         case SouthEastGravity:
 160         case SouthGravity:
 161         case SouthWestGravity:
 162                 dy = -(c->h);
 163                 break;
 164         }
 165
 166         switch (c->grav) {
 167         default:
 168                 break;
 169         case StaticGravity:
 170         case NorthWestGravity:
 171         case WestGravity:
 172         case SouthWestGravity:
 173                 dx = c->border;
 174                 break;
 175         case NorthGravity:
 176         case CenterGravity:
 177         case SouthGravity:
 178                 dx = -(c->w / 2) + c->border;
 179                 break;
 180         case NorthEastGravity:
 181         case EastGravity:
 182         case SouthEastGravity:
 183                 dx = -(c->w + c->border);
 184                 break;
 185         }
 186
 187         if(invert) {
 188                 dx = -dx;
 189                 dy = -dy;
 190         }
 191         c->x += dx;
 192         c->y += dy;
 193 }
 194
 195 void
 196 killclient(Arg *arg)
 197 {
 198         if(!sel)
 199                 return;
 200         if(sel->proto & PROTODELWIN)
 201                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
 202         else
 203                 XKillClient(dpy, sel->win);
 204 }
 205
 206 void
 207 manage(Window w, XWindowAttributes *wa)
 208 {
 209         unsigned int i;
 210         Client *c;
 211         Window trans;
 212         XSetWindowAttributes twa;
 213
 214         c = emallocz(sizeof(Client));
 215         c->tags = emallocz(ntags * sizeof(Bool));
 216         c->win = w;
 217         c->x = c->tx = wa->x;
 218         c->y = c->ty = wa->y;
 219         c->w = c->tw = wa->width;
 220         c->h = wa->height;
 221         c->th = bh;
 222
 223         c->border = 0;
 224         setsize(c);
 225
 226         if(c->x + c->w + 2 > sw)
 227                 c->x = sw - c->w - 2;
 228         if(c->x < 0)
 229                 c->x = 0;
 230         if(c->y + c->h + 2 > sh)
 231                 c->y = sh - c->h - 2;
 232         if(c->h != sh && c->y < bh)
 233                 c->y = bh;
 234
 235         c->proto = getproto(c->win);
 236         XSelectInput(dpy, c->win,
 237                 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 238         XGetTransientForHint(dpy, c->win, &trans);
 239         twa.override_redirect = 1;
 240         twa.background_pixmap = ParentRelative;
 241         twa.event_mask = ExposureMask | EnterWindowMask;
 242
 243         c->twin = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 244                         0, DefaultDepth(dpy, screen), CopyFromParent,
 245                         DefaultVisual(dpy, screen),
 246                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 247
 248         grabbuttons(c, False);
 249         settags(c, getclient(trans));
 250         if(!c->isfloat)
 251                 c->isfloat = trans
 252                         || (c->maxw && c->minw &&
 253                                 c->maxw == c->minw && c->maxh == c->minh);
 254
 255         if(clients)
 256                 clients->prev = c;
 257         c->next = clients;
 258         clients = c;
 259
 260         settitle(c);
 261         ban(c);
 262         XMapWindow(dpy, c->win);
 263         XMapWindow(dpy, c->twin);
 264         if(isvisible(c))
 265                 focus(c);
 266         arrange(NULL);
 267 }
 268
 269 void
 270 resize(Client *c, Bool sizehints, Corner sticky)
 271 {
 272         int bottom = c->y + c->h;
 273         int right = c->x + c->w;
 274         XWindowChanges wc;
 275
 276         if(sizehints) {
 277                 if(c->incw)
 278                         c->w -= (c->w - c->basew) % c->incw;
 279                 if(c->inch)
 280                         c->h -= (c->h - c->baseh) % c->inch;
 281                 if(c->minw && c->w < c->minw)
 282                         c->w = c->minw;
 283                 if(c->minh && c->h < c->minh)
 284                         c->h = c->minh;
 285                 if(c->maxw && c->w > c->maxw)
 286                         c->w = c->maxw;
 287                 if(c->maxh && c->h > c->maxh)
 288                         c->h = c->maxh;
 289         }
 290         if(sticky == TopRight || sticky == BotRight)
 291                 c->x = right - c->w;
 292         if(sticky == BotLeft || sticky == BotRight)
 293                 c->y = bottom - c->h;
 294
 295         resizetitle(c);
 296         wc.x = c->x;
 297         wc.y = c->y;
 298         wc.width = c->w;
 299         wc.height = c->h;
 300         if(c->w == sw && c->h == sh)
 301                 wc.border_width = 0;
 302         else
 303                 wc.border_width = 1;
 304         XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
 305         XSync(dpy, False);
 306 }
 307
 308 void
 309 setsize(Client *c)
 310 {
 311         long msize;
 312         XSizeHints size;
 313
 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         char **list = NULL;
 351         int n;
 352         XTextProperty name;
 353
 354         name.nitems = 0;
 355         c->name[0] = 0;
 356         XGetTextProperty(dpy, c->win, &name, netatom[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 togglemax(Arg *arg)
 377 {
 378         int ox, oy, ow, oh;
 379         Client *c;
 380         XEvent ev;
 381
 382         if(!sel)
 383                 return;
 384
 385         if((maximized = !maximized)) {
 386                 ox = sel->x;
 387                 oy = sel->y;
 388                 ow = sel->w;
 389                 oh = sel->h;
 390                 sel->x = sx;
 391                 sel->y = sy + bh;
 392                 sel->w = sw - 2;
 393                 sel->h = sh - 2 - bh;
 394
 395                 restack();
 396                 for(c = getnext(clients); c; c = getnext(c->next))
 397                         if(c != sel)
 398                                 ban(c);
 399                 resize(sel, arrange == dofloat, TopLeft);
 400
 401                 sel->x = ox;
 402                 sel->y = oy;
 403                 sel->w = ow;
 404                 sel->h = oh;
 405         }
 406         else
 407                 arrange(NULL);
 408         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 409 }
 410
 411 void
 412 unmanage(Client *c)
 413 {
 414         Client *tc, *fc;
 415         Window trans;
 416         XGrabServer(dpy);
 417         XSetErrorHandler(xerrordummy);
 418
 419         detach(c);
 420         if(sel == c) {
 421                 XGetTransientForHint(dpy, c->win, &trans);
 422                 if(trans && (tc = getclient(trans)) && isvisible(tc))
 423                         fc = tc;
 424                 else
 425                         fc = getnext(clients);
 426                 focus(fc);
 427         }
 428
 429         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 430         XDestroyWindow(dpy, c->twin);
 431
 432         free(c->tags);
 433         free(c);
 434
 435         XSync(dpy, False);
 436         XSetErrorHandler(xerror);
 437         XUngrabServer(dpy);
 438         arrange(NULL);
 439 }