client.c

   1 /*
   2  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
   3  * See LICENSE file for license details.
   4  */
   5
   6 #include <math.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <X11/Xatom.h>
  10 #include <X11/Xutil.h>
  11
  12 #include "dwm.h"
  13
  14 static void floating(void);
  15 static void tiling(void);
  16 static void (*arrange)(void) = tiling;
  17
  18 void
  19 max(void *aux)
  20 {
  21         if(!stack)
  22                 return;
  23         stack->x = sx;
  24         stack->y = sy;
  25         stack->w = sw - 2 * stack->border;
  26         stack->h = sh - 2 * stack->border;
  27         resize(stack);
  28         discard_events(EnterWindowMask);
  29 }
  30
  31 static void
  32 floating(void)
  33 {
  34         Client *c;
  35
  36         for(c = stack; c; c = c->snext)
  37                 resize(c);
  38         discard_events(EnterWindowMask);
  39 }
  40
  41 static void
  42 tiling(void)
  43 {
  44         Client *c;
  45         int n, cols, rows, gw, gh, i, j;
  46     float rt, fd;
  47
  48         if(!clients)
  49                 return;
  50         for(n = 0, c = clients; c; c = c->next, n++);
  51         rt = sqrt(n);
  52         if(modff(rt, &fd) < 0.5)
  53                 rows = floor(rt);
  54         else
  55                 rows = ceil(rt);
  56         if(rows * rows < n)
  57                 cols = rows + 1;
  58         else
  59                 cols = rows;
  60
  61         gw = (sw - 2)  / cols;
  62         gh = (sh - 2) / rows;
  63
  64         for(i = j = 0, c = clients; c; c = c->next) {
  65                 c->x = i * gw;
  66                 c->y = j * gh;
  67                 c->w = gw;
  68                 c->h = gh;
  69                 resize(c);
  70                 if(++i == cols) {
  71                         j++;
  72                         i = 0;
  73                 }
  74         }
  75         discard_events(EnterWindowMask);
  76 }
  77
  78 void
  79 toggle(void *aux)
  80 {
  81         if(arrange == floating)
  82                 arrange = tiling;
  83         else
  84                 arrange = floating;
  85         arrange();
  86 }
  87
  88
  89 void
  90 sel(void *aux)
  91 {
  92         const char *arg = aux;
  93         Client *c = NULL;
  94
  95         if(!arg || !stack)
  96                 return;
  97         if(!strncmp(arg, "next", 5))
  98                 c = stack->snext ? stack->snext : stack;
  99         else if(!strncmp(arg, "prev", 5))
 100                 for(c = stack; c && c->snext; c = c->snext);
 101         if(!c)
 102                 c = stack;
 103         craise(c);
 104         focus(c);
 105 }
 106
 107 void
 108 ckill(void *aux)
 109 {
 110         Client *c = stack;
 111
 112         if(!c)
 113                 return;
 114         if(c->proto & WM_PROTOCOL_DELWIN)
 115                 send_message(c->win, wm_atom[WMProtocols], wm_atom[WMDelete]);
 116         else
 117                 XKillClient(dpy, c->win);
 118 }
 119
 120 static void
 121 resize_title(Client *c)
 122 {
 123         int i;
 124
 125         c->tw = 0;
 126         for(i = 0; i < TLast; i++)
 127                 if(c->tags[i])
 128                         c->tw += textw(c->tags[i]) + dc.font.height;
 129         c->tw += textw(c->name) + dc.font.height;
 130         if(c->tw > c->w)
 131                 c->tw = c->w + 2;
 132         c->tx = c->x + c->w - c->tw + 2;
 133         c->ty = c->y;
 134         XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
 135 }
 136
 137 void
 138 update_name(Client *c)
 139 {
 140         XTextProperty name;
 141         int n;
 142         char **list = NULL;
 143
 144         name.nitems = 0;
 145         c->name[0] = 0;
 146         XGetTextProperty(dpy, c->win, &name, net_atom[NetWMName]);
 147         if(!name.nitems)
 148                 XGetWMName(dpy, c->win, &name);
 149         if(!name.nitems)
 150                 return;
 151         if(name.encoding == XA_STRING)
 152                 strncpy(c->name, (char *)name.value, sizeof(c->name));
 153         else {
 154                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 155                                 && n > 0 && *list)
 156                 {
 157                         strncpy(c->name, *list, sizeof(c->name));
 158                         XFreeStringList(list);
 159                 }
 160         }
 161         XFree(name.value);
 162         resize_title(c);
 163 }
 164
 165 void
 166 update_size(Client *c)
 167 {
 168         XSizeHints size;
 169         long msize;
 170         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 171                 size.flags = PSize;
 172         c->flags = size.flags;
 173         if(c->flags & PBaseSize) {
 174                 c->basew = size.base_width;
 175                 c->baseh = size.base_height;
 176         }
 177         else
 178                 c->basew = c->baseh = 0;
 179         if(c->flags & PResizeInc) {
 180                 c->incw = size.width_inc;
 181                 c->inch = size.height_inc;
 182         }
 183         else
 184                 c->incw = c->inch = 0;
 185         if(c->flags & PMaxSize) {
 186                 c->maxw = size.max_width;
 187                 c->maxh = size.max_height;
 188         }
 189         else
 190                 c->maxw = c->maxh = 0;
 191         if(c->flags & PMinSize) {
 192                 c->minw = size.min_width;
 193                 c->minh = size.min_height;
 194         }
 195         else
 196                 c->minw = c->minh = 0;
 197         if(c->flags & PWinGravity)
 198                 c->grav = size.win_gravity;
 199         else
 200                 c->grav = NorthWestGravity;
 201 }
 202
 203 void
 204 craise(Client *c)
 205 {
 206         XRaiseWindow(dpy, c->win);
 207         XRaiseWindow(dpy, c->title);
 208 }
 209
 210 void
 211 lower(Client *c)
 212 {
 213         XLowerWindow(dpy, c->title);
 214         XLowerWindow(dpy, c->win);
 215 }
 216
 217 void
 218 focus(Client *c)
 219 {
 220         Client **l, *old;
 221
 222         old = stack;
 223         for(l = &stack; *l && *l != c; l = &(*l)->snext);
 224         if(*l)
 225                 *l = c->snext;
 226         c->snext = stack;
 227         stack = c;
 228         if(old && old != c) {
 229                 XSetWindowBorder(dpy, old->win, dc.bg);
 230                 XMapWindow(dpy, old->title);
 231                 draw_client(old);
 232         }
 233         XUnmapWindow(dpy, c->title);
 234         XSetWindowBorder(dpy, c->win, dc.fg);
 235         draw_client(c);
 236         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 237         XFlush(dpy);
 238 }
 239
 240 void
 241 manage(Window w, XWindowAttributes *wa)
 242 {
 243         Client *c, **l;
 244         XSetWindowAttributes twa;
 245
 246         c = emallocz(sizeof(Client));
 247         c->win = w;
 248         c->tx = c->x = wa->x;
 249         c->ty = c->y = wa->y;
 250         c->tw = c->w = wa->width;
 251         c->h = wa->height;
 252         c->th = th;
 253         c->border = 1;
 254         update_size(c);
 255         XSelectInput(dpy, c->win,
 256                         StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 257         XGetTransientForHint(dpy, c->win, &c->trans);
 258         twa.override_redirect = 1;
 259         twa.background_pixmap = ParentRelative;
 260         twa.event_mask = ExposureMask;
 261
 262         c->tags[tsel] = tags[tsel];
 263         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 264                         0, DefaultDepth(dpy, screen), CopyFromParent,
 265                         DefaultVisual(dpy, screen),
 266                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 267
 268         update_name(c);
 269         for(l=&clients; *l; l=&(*l)->next);
 270         c->next = *l; /* *l == nil */
 271         *l = c;
 272         XSetWindowBorderWidth(dpy, c->win, 1);
 273         XMapRaised(dpy, c->win);
 274         XMapRaised(dpy, c->title);
 275         XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 276                         GrabModeAsync, GrabModeSync, None, None);
 277         XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
 278                         GrabModeAsync, GrabModeSync, None, None);
 279         XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 280                         GrabModeAsync, GrabModeSync, None, None);
 281         arrange();
 282         focus(c);
 283 }
 284
 285 void
 286 gravitate(Client *c, Bool invert)
 287 {
 288         int dx = 0, dy = 0;
 289
 290         switch(c->grav) {
 291         case StaticGravity:
 292         case NorthWestGravity:
 293         case NorthGravity:
 294         case NorthEastGravity:
 295                 dy = c->border;
 296                 break;
 297         case EastGravity:
 298         case CenterGravity:
 299         case WestGravity:
 300                 dy = -(c->h / 2) + c->border;
 301                 break;
 302         case SouthEastGravity:
 303         case SouthGravity:
 304         case SouthWestGravity:
 305                 dy = -c->h;
 306                 break;
 307         default:
 308                 break;
 309         }
 310
 311         switch (c->grav) {
 312         case StaticGravity:
 313         case NorthWestGravity:
 314         case WestGravity:
 315         case SouthWestGravity:
 316                 dx = c->border;
 317                 break;
 318         case NorthGravity:
 319         case CenterGravity:
 320         case SouthGravity:
 321                 dx = -(c->w / 2) + c->border;
 322                 break;
 323         case NorthEastGravity:
 324         case EastGravity:
 325         case SouthEastGravity:
 326                 dx = -(c->w + c->border);
 327                 break;
 328         default:
 329                 break;
 330         }
 331
 332         if(invert) {
 333                 dx = -dx;
 334                 dy = -dy;
 335         }
 336         c->x += dx;
 337         c->y += dy;
 338 }
 339
 340
 341 void
 342 resize(Client *c)
 343 {
 344         XConfigureEvent e;
 345
 346         if(c->incw)
 347                 c->w -= (c->w - c->basew) % c->incw;
 348         if(c->inch)
 349                 c->h -= (c->h - c->baseh) % c->inch;
 350         if(c->minw && c->w < c->minw)
 351                 c->w = c->minw;
 352         if(c->minh && c->h < c->minh)
 353                 c->h = c->minh;
 354         if(c->maxw && c->w > c->maxw)
 355                 c->w = c->maxw;
 356         if(c->maxh && c->h > c->maxh)
 357                 c->h = c->maxh;
 358         resize_title(c);
 359         XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 360         e.type = ConfigureNotify;
 361         e.event = c->win;
 362         e.window = c->win;
 363         e.x = c->x;
 364         e.y = c->y;
 365         e.width = c->w;
 366         e.height = c->h;
 367         e.border_width = c->border;
 368         e.above = None;
 369         e.override_redirect = False;
 370         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 371         XFlush(dpy);
 372 }
 373
 374 static int
 375 dummy_error_handler(Display *dsply, XErrorEvent *err)
 376 {
 377         return 0;
 378 }
 379
 380 void
 381 unmanage(Client *c)
 382 {
 383         Client **l;
 384
 385         XGrabServer(dpy);
 386         XSetErrorHandler(dummy_error_handler);
 387
 388         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 389         XDestroyWindow(dpy, c->title);
 390
 391         for(l=&clients; *l && *l != c; l=&(*l)->next);
 392         *l = c->next;
 393         for(l=&stack; *l && *l != c; l=&(*l)->snext);
 394         *l = c->snext;
 395         free(c);
 396
 397         XFlush(dpy);
 398         XSetErrorHandler(error_handler);
 399         XUngrabServer(dpy);
 400         arrange();
 401         if(stack)
 402                 focus(stack);
 403 }
 404
 405 Client *
 406 gettitle(Window w)
 407 {
 408         Client *c;
 409         for(c = clients; c; c = c->next)
 410                 if(c->title == w)
 411                         return c;
 412         return NULL;
 413 }
 414
 415 Client *
 416 getclient(Window w)
 417 {
 418         Client *c;
 419         for(c = clients; c; c = c->next)
 420                 if(c->win == w)
 421                         return c;
 422         return NULL;
 423 }
 424
 425 void
 426 draw_client(Client *c)
 427 {
 428         int i;
 429         if(c == stack)
 430                 return;
 431
 432         dc.x = dc.y = 0;
 433         dc.h = c->th;
 434
 435         dc.w = 0;
 436         for(i = 0; i < TLast; i++) {
 437                 if(c->tags[i]) {
 438                         dc.x += dc.w;
 439                         dc.w = textw(c->tags[i]) + dc.font.height;
 440                         draw(True, c->tags[i]);
 441                 }
 442         }
 443         dc.x += dc.w;
 444         dc.w = textw(c->name) + dc.font.height;
 445         draw(True, c->name);
 446         XCopyArea(dpy, dc.drawable, c->title, dc.gc,
 447                         0, 0, c->tw, c->th, 0, 0);
 448         XFlush(dpy);
 449 }