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) {
 103                         detach(c);
 104                         if(clients)
 105                                 clients->prev = c;
 106                         c->next = clients;
 107                         clients = c;
 108                 }
 109                 grabbuttons(c, True);
 110                 drawtitle(c);
 111                 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 112         }
 113         else
 114                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 115 }
 116
 117 Client *
 118 getclient(Window w)
 119 {
 120         Client *c;
 121
 122         for(c = clients; c; c = c->next)
 123                 if(c->win == w)
 124                         return c;
 125         return NULL;
 126 }
 127
 128 Client *
 129 getctitle(Window w)
 130 {
 131         Client *c;
 132
 133         for(c = clients; c; c = c->next)
 134                 if(c->twin == w)
 135                         return c;
 136         return NULL;
 137 }
 138
 139 void
 140 gravitate(Client *c, Bool invert)
 141 {
 142         int dx = 0, dy = 0;
 143
 144         switch(c->grav) {
 145         default:
 146                 break;
 147         case StaticGravity:
 148         case NorthWestGravity:
 149         case NorthGravity:
 150         case NorthEastGravity:
 151                 dy = c->border;
 152                 break;
 153         case EastGravity:
 154         case CenterGravity:
 155         case WestGravity:
 156                 dy = -(c->h / 2) + c->border;
 157                 break;
 158         case SouthEastGravity:
 159         case SouthGravity:
 160         case SouthWestGravity:
 161                 dy = -(c->h);
 162                 break;
 163         }
 164
 165         switch (c->grav) {
 166         default:
 167                 break;
 168         case StaticGravity:
 169         case NorthWestGravity:
 170         case WestGravity:
 171         case SouthWestGravity:
 172                 dx = c->border;
 173                 break;
 174         case NorthGravity:
 175         case CenterGravity:
 176         case SouthGravity:
 177                 dx = -(c->w / 2) + c->border;
 178                 break;
 179         case NorthEastGravity:
 180         case EastGravity:
 181         case SouthEastGravity:
 182                 dx = -(c->w + c->border);
 183                 break;
 184         }
 185
 186         if(invert) {
 187                 dx = -dx;
 188                 dy = -dy;
 189         }
 190         c->x += dx;
 191         c->y += dy;
 192 }
 193
 194 void
 195 killclient(Arg *arg)
 196 {
 197         if(!sel)
 198                 return;
 199         if(sel->proto & PROTODELWIN)
 200                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
 201         else
 202                 XKillClient(dpy, sel->win);
 203 }
 204
 205 void
 206 manage(Window w, XWindowAttributes *wa)
 207 {
 208         unsigned int i;
 209         Client *c;
 210         Window trans;
 211         XSetWindowAttributes twa;
 212
 213         c = emallocz(sizeof(Client));
 214         c->tags = emallocz(ntags * sizeof(Bool));
 215         c->win = w;
 216         c->x = c->tx = wa->x;
 217         c->y = c->ty = wa->y;
 218         c->w = c->tw = wa->width;
 219         c->h = wa->height;
 220         c->th = bh;
 221
 222         c->border = 0;
 223         setsize(c);
 224
 225         if(c->x + c->w + 2 > sw)
 226                 c->x = sw - c->w - 2;
 227         if(c->x < 0)
 228                 c->x = 0;
 229         if(c->y + c->h + 2 > sh)
 230                 c->y = sh - c->h - 2;
 231         if(c->h != sh && c->y < bh)
 232                 c->y = bh;
 233
 234         c->proto = getproto(c->win);
 235         XSelectInput(dpy, c->win,
 236                 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 237         XGetTransientForHint(dpy, c->win, &trans);
 238         twa.override_redirect = 1;
 239         twa.background_pixmap = ParentRelative;
 240         twa.event_mask = ExposureMask | EnterWindowMask;
 241
 242         c->twin = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 243                         0, DefaultDepth(dpy, screen), CopyFromParent,
 244                         DefaultVisual(dpy, screen),
 245                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 246
 247         grabbuttons(c, False);
 248         settags(c, getclient(trans));
 249         if(!c->isfloat)
 250                 c->isfloat = trans
 251                         || (c->maxw && c->minw &&
 252                                 c->maxw == c->minw && c->maxh == c->minh);
 253
 254         if(clients)
 255                 clients->prev = c;
 256         c->next = clients;
 257         clients = c;
 258
 259         settitle(c);
 260         ban(c);
 261         XMapWindow(dpy, c->win);
 262         XMapWindow(dpy, c->twin);
 263         if(isvisible(c))
 264                 focus(c);
 265         arrange(NULL);
 266 }
 267
 268 void
 269 resize(Client *c, Bool sizehints, Corner sticky)
 270 {
 271         int bottom = c->y + c->h;
 272         int right = c->x + c->w;
 273         XWindowChanges wc;
 274
 275         if(sizehints) {
 276                 if(c->incw)
 277                         c->w -= (c->w - c->basew) % c->incw;
 278                 if(c->inch)
 279                         c->h -= (c->h - c->baseh) % c->inch;
 280                 if(c->minw && c->w < c->minw)
 281                         c->w = c->minw;
 282                 if(c->minh && c->h < c->minh)
 283                         c->h = c->minh;
 284                 if(c->maxw && c->w > c->maxw)
 285                         c->w = c->maxw;
 286                 if(c->maxh && c->h > c->maxh)
 287                         c->h = c->maxh;
 288         }
 289         if(sticky == TopRight || sticky == BotRight)
 290                 c->x = right - c->w;
 291         if(sticky == BotLeft || sticky == BotRight)
 292                 c->y = bottom - c->h;
 293
 294         resizetitle(c);
 295         wc.x = c->x;
 296         wc.y = c->y;
 297         wc.width = c->w;
 298         wc.height = c->h;
 299         if(c->w == sw && c->h == sh)
 300                 wc.border_width = 0;
 301         else
 302                 wc.border_width = 1;
 303         XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
 304         XSync(dpy, False);
 305 }
 306
 307 void
 308 setsize(Client *c)
 309 {
 310         long msize;
 311         XSizeHints size;
 312
 313         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 314                 size.flags = PSize;
 315         c->flags = size.flags;
 316         if(c->flags & PBaseSize) {
 317                 c->basew = size.base_width;
 318                 c->baseh = size.base_height;
 319         }
 320         else
 321                 c->basew = c->baseh = 0;
 322         if(c->flags & PResizeInc) {
 323                 c->incw = size.width_inc;
 324                 c->inch = size.height_inc;
 325         }
 326         else
 327                 c->incw = c->inch = 0;
 328         if(c->flags & PMaxSize) {
 329                 c->maxw = size.max_width;
 330                 c->maxh = size.max_height;
 331         }
 332         else
 333                 c->maxw = c->maxh = 0;
 334         if(c->flags & PMinSize) {
 335                 c->minw = size.min_width;
 336                 c->minh = size.min_height;
 337         }
 338         else
 339                 c->minw = c->minh = 0;
 340         if(c->flags & PWinGravity)
 341                 c->grav = size.win_gravity;
 342         else
 343                 c->grav = NorthWestGravity;
 344 }
 345
 346 void
 347 settitle(Client *c)
 348 {
 349         char **list = NULL;
 350         int n;
 351         XTextProperty name;
 352
 353         name.nitems = 0;
 354         c->name[0] = 0;
 355         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 356         if(!name.nitems)
 357                 XGetWMName(dpy, c->win, &name);
 358         if(!name.nitems)
 359                 return;
 360         if(name.encoding == XA_STRING)
 361                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 362         else {
 363                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 364                                 && n > 0 && *list)
 365                 {
 366                         strncpy(c->name, *list, sizeof(c->name));
 367                         XFreeStringList(list);
 368                 }
 369         }
 370         XFree(name.value);
 371         resizetitle(c);
 372 }
 373
 374 void
 375 togglemax(Arg *arg)
 376 {
 377         int ox, oy, ow, oh;
 378         Client *c;
 379         XEvent ev;
 380
 381         if(!sel)
 382                 return;
 383
 384         if((maximized = !maximized)) {
 385                 ox = sel->x;
 386                 oy = sel->y;
 387                 ow = sel->w;
 388                 oh = sel->h;
 389                 sel->x = sx;
 390                 sel->y = sy + bh;
 391                 sel->w = sw - 2;
 392                 sel->h = sh - 2 - bh;
 393
 394                 restack();
 395                 for(c = getnext(clients); c; c = getnext(c->next))
 396                         if(c != sel)
 397                                 ban(c);
 398                 resize(sel, arrange == dofloat, TopLeft);
 399
 400                 sel->x = ox;
 401                 sel->y = oy;
 402                 sel->w = ow;
 403                 sel->h = oh;
 404         }
 405         else
 406                 arrange(NULL);
 407         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 408 }
 409
 410 void
 411 unmanage(Client *c)
 412 {
 413         Client *tc, *fc;
 414         Window trans;
 415         XGrabServer(dpy);
 416         XSetErrorHandler(xerrordummy);
 417
 418         detach(c);
 419         if(sel == c) {
 420                 XGetTransientForHint(dpy, c->win, &trans);
 421                 if(trans && (tc = getclient(trans)) && isvisible(tc))
 422                         fc = tc;
 423                 else
 424                         fc = getnext(clients);
 425                 focus(fc);
 426         }
 427
 428         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 429         XDestroyWindow(dpy, c->twin);
 430
 431         free(c->tags);
 432         free(c);
 433
 434         XSync(dpy, False);
 435         XSetErrorHandler(xerror);
 436         XUngrabServer(dpy);
 437         arrange(NULL);
 438 }