client.c

   1 /*
   2  * client.c - client management
   3  *
   4  * Copyright © 2007 Julien Danjou <julien@danjou.info>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  */
  21
  22 #include <stdio.h>
  23 #include <X11/Xatom.h>
  24 #include <X11/Xutil.h>
  25 #include <X11/extensions/shape.h>
  26
  27 #include "screen.h"
  28 #include "awesome.h"
  29 #include "layout.h"
  30 #include "tag.h"
  31 #include "util.h"
  32 #include "statusbar.h"
  33
  34 #include "layouts/floating.h"
  35
  36 /* extern */
  37 extern Client *clients, *sel, *stack;   /* global client list and stack */
  38
  39 /** Attach client stack to clients stacks
  40  * \param c the client
  41  */
  42 static inline void
  43 attachstack(Client * c)
  44 {
  45     c->snext = stack;
  46     stack = c;
  47 }
  48
  49 /** Detach client from stack
  50  * \param c the client
  51  */
  52 static inline void
  53 detachstack(Client * c)
  54 {
  55     Client **tc;
  56
  57     for(tc = &stack; *tc && *tc != c; tc = &(*tc)->snext);
  58     *tc = c->snext;
  59 }
  60
  61 /** Grab or ungrab buttons when a client is focused
  62  * \param c client
  63  * \param focused True if client is focused
  64  * \param modkey Mod key mask
  65  * \param numlockmask Numlock mask
  66  */
  67 static void
  68 grabbuttons(Client * c, Bool focused, KeySym modkey, unsigned int numlockmask)
  69 {
  70     XUngrabButton(c->display, AnyButton, AnyModifier, c->win);
  71
  72     if(focused)
  73     {
  74         XGrabButton(c->display, Button1, modkey, c->win, False, BUTTONMASK,
  75                     GrabModeAsync, GrabModeSync, None, None);
  76         XGrabButton(c->display, Button1, modkey | LockMask, c->win, False,
  77                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  78         XGrabButton(c->display, Button1, modkey | numlockmask, c->win, False,
  79                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  80         XGrabButton(c->display, Button1, modkey | numlockmask | LockMask,
  81                     c->win, False, BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  82
  83         XGrabButton(c->display, Button2, modkey, c->win, False, BUTTONMASK,
  84                     GrabModeAsync, GrabModeSync, None, None);
  85         XGrabButton(c->display, Button2, modkey | LockMask, c->win, False,
  86                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  87         XGrabButton(c->display, Button2, modkey | numlockmask, c->win, False,
  88                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  89         XGrabButton(c->display, Button2, modkey | numlockmask | LockMask,
  90                     c->win, False, BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  91
  92         XGrabButton(c->display, Button3, modkey, c->win, False, BUTTONMASK,
  93                     GrabModeAsync, GrabModeSync, None, None);
  94         XGrabButton(c->display, Button3, modkey | LockMask, c->win, False,
  95                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  96         XGrabButton(c->display, Button3, modkey | numlockmask, c->win, False,
  97                     BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  98         XGrabButton(c->display, Button3, modkey | numlockmask | LockMask,
  99                     c->win, False, BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
 100
 101         XUngrabButton(c->display, AnyButton, AnyModifier, RootWindow(c->display, c->screen));
 102     }
 103     else
 104     {
 105         XGrabButton(c->display, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
 106                     GrabModeAsync, GrabModeSync, None, None);
 107         XGrabButton(c->display, Button4, NoSymbol, RootWindow(c->display, c->screen), False, BUTTONMASK,
 108                     GrabModeAsync, GrabModeSync, None, None);
 109         XGrabButton(c->display, Button4, LockMask, RootWindow(c->display, c->screen), False, BUTTONMASK,
 110                     GrabModeAsync, GrabModeSync, None, None);
 111         XGrabButton(c->display, Button4, numlockmask, RootWindow(c->display, c->screen), False, BUTTONMASK,
 112                     GrabModeAsync, GrabModeSync, None, None);
 113         XGrabButton(c->display, Button4, numlockmask | LockMask, RootWindow(c->display, c->screen), False, BUTTONMASK,
 114                     GrabModeAsync, GrabModeSync, None, None);
 115
 116         XGrabButton(c->display, Button5, NoSymbol, RootWindow(c->display, c->screen), False, BUTTONMASK,
 117                     GrabModeAsync, GrabModeSync, None, None);
 118         XGrabButton(c->display, Button5, LockMask, RootWindow(c->display, c->screen), False, BUTTONMASK,
 119                     GrabModeAsync, GrabModeSync, None, None);
 120         XGrabButton(c->display, Button5, numlockmask, RootWindow(c->display, c->screen), False, BUTTONMASK,
 121                     GrabModeAsync, GrabModeSync, None, None);
 122         XGrabButton(c->display, Button5, numlockmask | LockMask, RootWindow(c->display, c->screen), False, BUTTONMASK,
 123                     GrabModeAsync, GrabModeSync, None, None);
 124
 125     }
 126 }
 127
 128 /** Check if client supports protocol WM_DELETE_WINDOW
 129  * \param c the client
 130  * \return True if client has WM_DELETE_WINDOW
 131  */
 132 static Bool
 133 isprotodel(Client * c)
 134 {
 135     int i, n;
 136     Atom *protocols;
 137     Bool ret = False;
 138
 139     if(XGetWMProtocols(c->display, c->win, &protocols, &n))
 140     {
 141         for(i = 0; !ret && i < n; i++)
 142             if(protocols[i] == XInternAtom(c->display, "WM_DELETE_WINDOW", False))
 143                 ret = True;
 144         XFree(protocols);
 145     }
 146     return ret;
 147 }
 148
 149 /** Set client WM_STATE property
 150  * \param c the client
 151  * \param state no idea
 152  */
 153 static void
 154 setclientstate(Client * c, long state)
 155 {
 156     long data[] = { state, None };
 157
 158     XChangeProperty(c->display, c->win, XInternAtom(c->display, "WM_STATE", False),
 159                     XInternAtom(c->display, "WM_STATE", False),  32,
 160                     PropModeReplace, (unsigned char *) data, 2);
 161 }
 162
 163 /** Set client transparency using composite
 164  * \param c client
 165  * \param opacity opacity percentage
 166  */
 167 static void
 168 setclienttrans(Client *c, double opacity)
 169 {
 170     unsigned int real_opacity = 0xffffffff;
 171
 172     if(opacity >= 0 && opacity <= 100)
 173     {
 174         real_opacity = ((opacity / 100.0) * 0xffffffff);
 175         XChangeProperty(c->display, c->win,
 176                         XInternAtom(c->display, "_NET_WM_WINDOW_OPACITY", False),
 177                         XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &real_opacity, 1L);
 178     }
 179     else
 180         XDeleteProperty(c->display, c->win, XInternAtom(c->display, "_NET_WM_WINDOW_OPACITY", False));
 181
 182     XSync(c->display, False);
 183 }
 184
 185 /** Attach client to the beginning of the clients stack
 186  * \param c the client
 187  */
 188 inline void
 189 attach(Client * c)
 190 {
 191     if(clients)
 192         clients->prev = c;
 193     c->next = clients;
 194     clients = c;
 195 }
 196
 197 inline void
 198 updatetitle(Client * c)
 199 {
 200     if(!xgettextprop(c->display, c->win, XInternAtom(c->display, "_NET_WM_NAME", False), c->name, sizeof c->name))
 201         xgettextprop(c->display, c->win, XInternAtom(c->display, "WM_NAME", False), c->name, sizeof c->name);
 202 }
 203
 204 /** Ban client
 205  * \param c the client
 206  */
 207 void
 208 ban(Client * c)
 209 {
 210     XUnmapWindow(c->display, c->win);
 211     setclientstate(c, IconicState);
 212     c->isbanned = True;
 213     c->unmapped = True;
 214 }
 215
 216 /** Configure client
 217  * \param c the client
 218  */
 219 void
 220 configure(Client * c)
 221 {
 222     XConfigureEvent ce;
 223
 224     ce.type = ConfigureNotify;
 225     ce.display = c->display;
 226     ce.event = c->win;
 227     ce.window = c->win;
 228     ce.x = c->x;
 229     ce.y = c->y;
 230     ce.width = c->w;
 231     ce.height = c->h;
 232     ce.border_width = c->border;
 233     ce.above = None;
 234     ce.override_redirect = False;
 235     XSendEvent(c->display, c->win, False, StructureNotifyMask, (XEvent *) & ce);
 236 }
 237
 238 void
 239 detach(Client * c)
 240 {
 241     if(c->prev)
 242         c->prev->next = c->next;
 243     if(c->next)
 244         c->next->prev = c->prev;
 245     if(c == clients)
 246         clients = c->next;
 247     c->next = c->prev = NULL;
 248 }
 249
 250 /** Give focus to client, or to first client if c is NULL
 251  * \param disp Display ref
 252  * \param drawcontext drawcontext ref
 253  * \param c client
 254  * \param selscreen True if current screen is selected
 255  * \param awesomeconf awesome config
 256  */
 257 void
 258 focus(Display *disp, DC *drawcontext, Client * c, Bool selscreen, awesome_config *awesomeconf)
 259 {
 260     /* if c is NULL or invisible, take next client in the stack */
 261     if((!c && selscreen) || (c && !isvisible(c, awesomeconf->screen, awesomeconf->selected_tags, awesomeconf->ntags)))
 262         for(c = stack; c && !isvisible(c, awesomeconf->screen, awesomeconf->selected_tags, awesomeconf->ntags); c = c->snext);
 263
 264     /* if a client was selected but it's not the current client, unfocus it */
 265     if(sel && sel != c)
 266     {
 267         grabbuttons(sel, False, awesomeconf->modkey, awesomeconf->numlockmask);
 268         XSetWindowBorder(sel->display, sel->win, drawcontext->norm[ColBorder]);
 269         setclienttrans(sel, awesomeconf->opacity_unfocused);
 270     }
 271     if(c)
 272     {
 273         detachstack(c);
 274         attachstack(c);
 275         grabbuttons(c, True, awesomeconf->modkey, awesomeconf->numlockmask);
 276     }
 277     if(!selscreen)
 278         return;
 279     sel = c;
 280     drawstatusbar(disp, awesomeconf->screen, drawcontext, awesomeconf);
 281     if(sel)
 282     {
 283         XSetWindowBorder(sel->display, sel->win, drawcontext->sel[ColBorder]);
 284         XSetInputFocus(sel->display, sel->win, RevertToPointerRoot, CurrentTime);
 285         for(c = stack; c; c = c->snext)
 286             if(c != sel)
 287                 setclienttrans(c, awesomeconf->opacity_unfocused);
 288         setclienttrans(sel, -1);
 289     }
 290     else
 291         XSetInputFocus(disp, RootWindow(disp, awesomeconf->screen), RevertToPointerRoot, CurrentTime);
 292 }
 293
 294 /** Kill selected client
 295  * \param disp Display ref
 296  * \param awesomeconf awesome config
 297  * \param arg unused
 298  * \ingroup ui_callback
 299  */
 300 void
 301 uicb_killclient(Display *disp __attribute__ ((unused)),
 302                 DC *drawcontext __attribute__ ((unused)),
 303                 awesome_config *awesomeconf __attribute__ ((unused)),
 304                 const char *arg __attribute__ ((unused)))
 305 {
 306     XEvent ev;
 307
 308     if(!sel)
 309         return;
 310     if(isprotodel(sel))
 311     {
 312         ev.type = ClientMessage;
 313         ev.xclient.window = sel->win;
 314         ev.xclient.message_type = XInternAtom(disp, "WM_PROTOCOLS", False);
 315         ev.xclient.format = 32;
 316         ev.xclient.data.l[0] = XInternAtom(disp, "WM_DELETE_WINDOW", False);
 317         ev.xclient.data.l[1] = CurrentTime;
 318         XSendEvent(sel->display, sel->win, False, NoEventMask, &ev);
 319     }
 320     else
 321         XKillClient(sel->display, sel->win);
 322 }
 323
 324 static Bool
 325 loadprops(Client * c, int ntags)
 326 {
 327     int i;
 328     char *prop;
 329     Bool result = False;
 330
 331     prop = p_new(char, ntags + 2);
 332
 333     if(xgettextprop(c->display, c->win, AWESOMEPROPS_ATOM(c->display), prop, ntags + 2))
 334     {
 335         for(i = 0; i < ntags && prop[i]; i++)
 336             if((c->tags[i] = prop[i] == '1'))
 337                 result = True;
 338         if(i <= ntags && prop[i])
 339             c->isfloating = prop[i] == '1';
 340     }
 341
 342     p_delete(&prop);
 343
 344     return result;
 345 }
 346
 347 void
 348 manage(Display * disp, DC *drawcontext, Window w, XWindowAttributes * wa, awesome_config *awesomeconf)
 349 {
 350     int i;
 351     Client *c, *t = NULL;
 352     Window trans;
 353     Status rettrans;
 354     XWindowChanges wc;
 355
 356     c = p_new(Client, 1);
 357     c->tags = p_new(Bool, awesomeconf->ntags);
 358     c->win = w;
 359     c->ftview = True;
 360     c->x = c->rw = wa->x;
 361     c->y = c->ry = wa->y;
 362     c->w = c->rw = wa->width;
 363     c->h = c->rh = wa->height;
 364     c->oldborder = wa->border_width;
 365     c->display = disp;
 366     c->screen = awesomeconf->screen;
 367     if(c->w == DisplayWidth(disp, c->screen)
 368        && c->h == DisplayHeight(disp, c->screen))
 369     {
 370         c->x = 0;
 371         c->y = 0;
 372         c->border = wa->border_width;
 373     }
 374     else
 375     {
 376         ScreenInfo *si = get_display_info(disp, c->screen, awesomeconf->statusbar);
 377
 378         if(c->x + c->w + 2 * c->border > si->x_org + si->width)
 379             c->x = c->rx = si->x_org + si->width - c->w - 2 * c->border;
 380         if(c->y + c->h + 2 * c->border > si->y_org + si->height)
 381             c->y = c->ry = si->y_org + si->height - c->h - 2 * c->border;
 382         if(c->x < si->x_org)
 383             c->x = c->rx = si->x_org;
 384         if(c->y < si->y_org)
 385             c->y = c->ry = si->y_org;
 386         c->border = awesomeconf->borderpx;
 387         XFree(si);
 388     }
 389     wc.border_width = c->border;
 390     XConfigureWindow(disp, w, CWBorderWidth, &wc);
 391     XSetWindowBorder(disp, w, drawcontext->norm[ColBorder]);
 392     configure(c);               /* propagates border_width, if size doesn't change */
 393     updatesizehints(c);
 394     XSelectInput(disp, w, StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 395     if(awesomeconf->have_shape)
 396     {
 397         XShapeSelectInput(disp, w, ShapeNotifyMask);
 398         set_shape(c);
 399     }
 400     grabbuttons(c, False, awesomeconf->modkey, awesomeconf->numlockmask);
 401     updatetitle(c);
 402     if((rettrans = XGetTransientForHint(disp, w, &trans) == Success))
 403         for(t = clients; t && t->win != trans; t = t->next);
 404     if(t)
 405         for(i = 0; i < awesomeconf->ntags; i++)
 406             c->tags[i] = t->tags[i];
 407     if(!loadprops(c, awesomeconf->ntags))
 408         applyrules(c, awesomeconf);
 409     if(!c->isfloating)
 410         c->isfloating = (rettrans == Success) || c->isfixed;
 411     saveprops(c, awesomeconf->ntags);
 412     attach(c);
 413     attachstack(c);
 414     XMoveResizeWindow(disp, c->win, c->x, c->y, c->w, c->h);     /* some windows require this */
 415     c->isbanned = True;
 416     arrange(disp, drawcontext, awesomeconf);
 417 }
 418
 419 void
 420 resize(Client * c, int x, int y, int w, int h, Bool sizehints)
 421 {
 422     double dx, dy, max, min, ratio;
 423     XWindowChanges wc;
 424
 425     if(sizehints)
 426     {
 427         if(c->minay > 0 && c->maxay > 0 && (h - c->baseh) > 0 && (w - c->basew) > 0)
 428         {
 429             dx = (double) (w - c->basew);
 430             dy = (double) (h - c->baseh);
 431             min = (double) (c->minax) / (double) (c->minay);
 432             max = (double) (c->maxax) / (double) (c->maxay);
 433             ratio = dx / dy;
 434             if(max > 0 && min > 0 && ratio > 0)
 435             {
 436                 if(ratio < min)
 437                 {
 438                     dy = (dx * min + dy) / (min * min + 1);
 439                     dx = dy * min;
 440                     w = (int) dx + c->basew;
 441                     h = (int) dy + c->baseh;
 442                 }
 443                 else if(ratio > max)
 444                 {
 445                     dy = (dx * min + dy) / (max * max + 1);
 446                     dx = dy * min;
 447                     w = (int) dx + c->basew;
 448                     h = (int) dy + c->baseh;
 449                 }
 450             }
 451         }
 452         if(c->minw && w < c->minw)
 453             w = c->minw;
 454         if(c->minh && h < c->minh)
 455             h = c->minh;
 456         if(c->maxw && w > c->maxw)
 457             w = c->maxw;
 458         if(c->maxh && h > c->maxh)
 459             h = c->maxh;
 460         if(c->incw)
 461             w -= (w - c->basew) % c->incw;
 462         if(c->inch)
 463             h -= (h - c->baseh) % c->inch;
 464     }
 465     if(w <= 0 || h <= 0)
 466         return;
 467     /* offscreen appearance fixes */
 468     if(x > DisplayWidth(c->display, c->screen))
 469         x = DisplayWidth(c->display, c->screen) - w - 2 * c->border;
 470     if(y > DisplayHeight(c->display, c->screen))
 471         y = DisplayHeight(c->display, c->screen) - h - 2 * c->border;
 472     if(x + w + 2 * c->border < 0)
 473         x = 0;
 474     if(y + h + 2 * c->border < 0)
 475         y = 0;
 476     if(c->x != x || c->y != y || c->w != w || c->h != h)
 477     {
 478         c->x = wc.x = x;
 479         c->y = wc.y = y;
 480         c->w = wc.width = w;
 481         c->h = wc.height = h;
 482         wc.border_width = c->border;
 483         XConfigureWindow(c->display, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
 484         configure(c);
 485         XSync(c->display, False);
 486     }
 487 }
 488
 489 void
 490 uicb_moveresize(Display *disp __attribute__ ((unused)),
 491                 DC *drawcontext __attribute__ ((unused)),
 492                 awesome_config *awesomeconf,
 493                 const char *arg)
 494 {
 495     int x, y, w, h, nx, ny, nw, nh, ox, oy, ow, oh;
 496     char xabs, yabs, wabs, habs;
 497     int mx, my, dx, dy, nmx, nmy;
 498     unsigned int dui;
 499     Window dummy;
 500
 501     if(!IS_ARRANGE(floating))
 502         if(!sel || !sel->isfloating || sel->isfixed || !arg)
 503             return;
 504     if(sscanf(arg, "%d%c %d%c %d%c %d%c", &x, &xabs, &y, &yabs, &w, &wabs, &h, &habs) != 8)
 505         return;
 506     nx = xabs == 'x' ? sel->x + x : x;
 507     ny = yabs == 'y' ? sel->y + y : y;
 508     nw = wabs == 'w' ? sel->w + w : w;
 509     nh = habs == 'h' ? sel->h + h : h;
 510
 511     ox = sel->x;
 512     oy = sel->y;
 513     ow = sel->w;
 514     oh = sel->h;
 515
 516     Bool xqp = XQueryPointer(sel->display, RootWindow(sel->display, sel->screen), &dummy, &dummy, &mx, &my, &dx, &dy, &dui);
 517     resize(sel, nx, ny, nw, nh, True);
 518     if (xqp && ox <= mx && (ox + ow) >= mx && oy <= my && (oy + oh) >= my)
 519     {
 520         nmx = mx-ox+sel->w-ow-1 < 0 ? 0 : mx-ox+sel->w-ow-1;
 521         nmy = my-oy+sel->h-oh-1 < 0 ? 0 : my-oy+sel->h-oh-1;
 522         XWarpPointer(sel->display, None, sel->win, 0, 0, 0, 0, nmx, nmy);
 523     }
 524 }
 525
 526 void
 527 saveprops(Client * c, int ntags)
 528 {
 529     int i;
 530     char *prop;
 531
 532     prop = p_new(char, ntags + 2);
 533
 534     for(i = 0; i < ntags; i++)
 535         prop[i] = c->tags[i] ? '1' : '0';
 536
 537     if(i <= ntags)
 538         prop[i] = c->isfloating ? '1' : '0';
 539
 540     prop[++i] = '\0';
 541
 542     XChangeProperty(c->display, c->win, AWESOMEPROPS_ATOM(c->display), XA_STRING, 8,
 543                     PropModeReplace, (unsigned char *) prop, i);
 544
 545     p_delete(&prop);
 546 }
 547
 548 void
 549 unban(Client * c)
 550 {
 551     XMapWindow(c->display, c->win);
 552     setclientstate(c, NormalState);
 553     c->isbanned = False;
 554     c->unmapped = False;
 555 }
 556
 557 void
 558 unmanage(Client * c, DC *drawcontext, long state, awesome_config *awesomeconf)
 559 {
 560     XWindowChanges wc;
 561
 562     c->unmapped = True;
 563     wc.border_width = c->oldborder;
 564     /* The server grab construct avoids race conditions. */
 565     XGrabServer(c->display);
 566     XConfigureWindow(c->display, c->win, CWBorderWidth, &wc);  /* restore border */
 567     detach(c);
 568     detachstack(c);
 569     if(sel == c)
 570         focus(c->display, drawcontext, NULL, True, awesomeconf);
 571     XUngrabButton(c->display, AnyButton, AnyModifier, c->win);
 572     setclientstate(c, state);
 573     XSync(c->display, False);
 574     XSetErrorHandler(xerror);
 575     XUngrabServer(c->display);
 576     if(state != NormalState)
 577         arrange(c->display, drawcontext, awesomeconf);
 578     p_delete(&c->tags);
 579     p_delete(&c);
 580 }
 581
 582 void
 583 updatesizehints(Client * c)
 584 {
 585     long msize;
 586     XSizeHints size;
 587
 588     if(!XGetWMNormalHints(c->display, c->win, &size, &msize) || !size.flags)
 589         size.flags = PSize;
 590     c->flags = size.flags;
 591     if(c->flags & PBaseSize)
 592     {
 593         c->basew = size.base_width;
 594         c->baseh = size.base_height;
 595     }
 596     else if(c->flags & PMinSize)
 597     {
 598         c->basew = size.min_width;
 599         c->baseh = size.min_height;
 600     }
 601     else
 602         c->basew = c->baseh = 0;
 603     if(c->flags & PResizeInc)
 604     {
 605         c->incw = size.width_inc;
 606         c->inch = size.height_inc;
 607     }
 608     else
 609         c->incw = c->inch = 0;
 610
 611     if(c->flags & PMaxSize)
 612     {
 613         c->maxw = size.max_width;
 614         c->maxh = size.max_height;
 615     }
 616     else
 617         c->maxw = c->maxh = 0;
 618
 619     if(c->flags & PMinSize)
 620     {
 621         c->minw = size.min_width;
 622         c->minh = size.min_height;
 623     }
 624     else if(c->flags & PBaseSize)
 625     {
 626         c->minw = size.base_width;
 627         c->minh = size.base_height;
 628     }
 629     else
 630         c->minw = c->minh = 0;
 631
 632     if(c->flags & PAspect)
 633     {
 634         c->minax = size.min_aspect.x;
 635         c->maxax = size.max_aspect.x;
 636         c->minay = size.min_aspect.y;
 637         c->maxay = size.max_aspect.y;
 638     }
 639     else
 640         c->minax = c->maxax = c->minay = c->maxay = 0;
 641
 642     c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
 643                   && c->maxw == c->minw && c->maxh == c->minh);
 644 }
 645
 646 void
 647 set_shape(Client *c)
 648 {
 649     int bounding_shaped;
 650     int i, b;  unsigned int u;  /* dummies */
 651     /* Logic to decide if we have a shaped window cribbed from fvwm-2.5.10. */
 652     if (XShapeQueryExtents(c->display, c->win, &bounding_shaped, &i, &i,
 653                            &u, &u, &b, &i, &i, &u, &u) && bounding_shaped)
 654         XShapeCombineShape(c->display, RootWindow(c->display, c->screen), ShapeBounding, 0, 0, c->win, ShapeBounding, ShapeSet);
 655 }
 656
 657 void
 658 uicb_settrans(Display *disp __attribute__ ((unused)),
 659               DC *drawcontext __attribute__ ((unused)),
 660               awesome_config *awesomeconf __attribute__ ((unused)),
 661               const char *arg)
 662 {
 663     double delta = 100.0, current_opacity = 0.0;
 664     unsigned char *data;
 665     Atom actual;
 666     int format;
 667     unsigned long n, left;
 668     unsigned int current_opacity_raw = 0;
 669     int set_prop = 0;
 670
 671     if(!sel)
 672         return;
 673
 674     XGetWindowProperty(sel->display, sel->win, XInternAtom(sel->display, "_NET_WM_WINDOW_OPACITY", False),
 675                        0L, 1L, False, XA_CARDINAL, &actual, &format, &n, &left,
 676                        (unsigned char **) &data);
 677     if(data)
 678     {
 679         memcpy(&current_opacity_raw, data, sizeof(unsigned int));
 680         XFree(data);
 681         current_opacity = (current_opacity_raw * 100.0) / 0xffffffff;
 682     }
 683     else
 684         set_prop = 1;
 685
 686     delta = compute_new_value_from_arg(arg, current_opacity);
 687
 688     if(delta <= 0.0)
 689         delta = 0.0;
 690     else if(delta > 100.0)
 691     {
 692         delta = 100.0;
 693         set_prop = 1;
 694     }
 695
 696     if(delta == 100.0 && !set_prop)
 697         setclienttrans(sel, -1);
 698     else
 699         setclienttrans(sel, delta);
 700 }
 701
 702
 703 /** Set borrder size
 704  * \param disp Display ref
 705  * \param drawcontext Drawcontext ref
 706  * \param awesomeconf awesome config
 707  * \param arg X, +X or -X
 708  */
 709 void
 710 uicb_setborder(Display *disp __attribute__ ((unused)),
 711                DC *drawcontext __attribute__ ((unused)),
 712                awesome_config *awesomeconf,
 713                const char *arg)
 714 {
 715     if(!arg)
 716         return;
 717
 718     if((awesomeconf->borderpx = (int) compute_new_value_from_arg(arg, (double) awesomeconf->borderpx)) < 0)
 719         awesomeconf->borderpx = 0;
 720 }
 721