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