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/extensions/shape.h>
  25 #include <X11/extensions/Xinerama.h>
  26
  27 #include "client.h"
  28 #include "awesome.h"
  29 #include "tag.h"
  30 #include "rules.h"
  31 #include "util.h"
  32 #include "xutil.h"
  33 #include "statusbar.h"
  34 #include "window.h"
  35 #include "focus.h"
  36 #include "ewmh.h"
  37 #include "screen.h"
  38 #include "layouts/floating.h"
  39
  40
  41 extern AwesomeConf globalconf;
  42
  43 /** Load windows properties, restoring client's tag
  44  * and floating state before awesome was restarted if any
  45  * \todo this may bug if number of tags is != than before
  46  * \param c Client ref
  47  * \param screen Screen ID
  48  */
  49 static Bool
  50 client_loadprops(Client * c, int screen)
  51 {
  52     int i, ntags = 0;
  53     Tag *tag;
  54     char *prop;
  55     Bool result = False;
  56
  57     for(tag = globalconf.screens[screen].tags; tag; tag = tag->next)
  58         ntags++;
  59
  60     prop = p_new(char, ntags + 2);
  61
  62     if(xgettextprop(globalconf.display, c->win, AWESOMEPROPS_ATOM(globalconf.display), prop, ntags + 2))
  63     {
  64         for(i = 0, tag = globalconf.screens[screen].tags; tag && i < ntags && prop[i]; i++, tag = tag->next)
  65             if(prop[i] == '1')
  66             {
  67                 tag_client(c, tag);
  68                 result = True;
  69             }
  70             else
  71                 untag_client(c, tag);
  72
  73         if(i <= ntags && prop[i])
  74             c->isfloating = prop[i] == '1';
  75     }
  76
  77     p_delete(&prop);
  78
  79     return result;
  80 }
  81
  82 /** Check if client supports protocol WM_DELETE_WINDOW
  83  * \param disp the display
  84  * \param win the Window
  85  * \return True if client has WM_DELETE_WINDOW
  86  */
  87 static Bool
  88 isprotodel(Display *disp, Window win)
  89 {
  90     int i, n;
  91     Atom *protocols;
  92     Bool ret = False;
  93
  94     if(XGetWMProtocols(disp, win, &protocols, &n))
  95     {
  96         for(i = 0; !ret && i < n; i++)
  97             if(protocols[i] == XInternAtom(disp, "WM_DELETE_WINDOW", False))
  98                 ret = True;
  99         XFree(protocols);
 100     }
 101     return ret;
 102 }
 103
 104 /** Swap two client in the linked list clients
 105  * \param head pointer ito the client list head
 106  * \param c1 first client
 107  * \param c2 second client
 108  */
 109 static void
 110 client_swap(Client **head, Client *c1, Client *c2)
 111 {
 112     Client *tmp;
 113
 114     tmp = c1->next;
 115     c1->next = c2->next;
 116     c2->next = (tmp == c2 ? c1 : tmp);
 117
 118     tmp = c2->prev;
 119     c2->prev = c1->prev;
 120     c1->prev = (tmp == c1 ? c2 : tmp );
 121
 122     if(c1->next)
 123         c1->next->prev = c1;
 124
 125     if(c1->prev)
 126         c1->prev->next = c1;
 127
 128     if(c2->next)
 129         c2->next->prev = c2;
 130
 131     if(c2->prev)
 132         c2->prev->next = c2;
 133
 134     if(*head == c1)
 135         *head = c2;
 136 }
 137
 138 /** Get a Client by its window
 139  * \param list Client list to look info
 140  * \param w Client window to find
 141  * \return client
 142  */
 143 Client *
 144 get_client_bywin(Client *list, Window w)
 145 {
 146     Client *c;
 147
 148     for(c = list; c && c->win != w; c = c->next);
 149     return c;
 150 }
 151
 152
 153 /** Get a client by its name
 154  * \param list Client list
 155  * \param name name to search
 156  * \return first matching client
 157  */
 158 Client *
 159 get_client_byname(Client *list, char *name)
 160 {
 161     Client *c;
 162
 163     for(c = list; c; c = c->next)
 164         if(strstr(c->name, name))
 165             return c;
 166
 167     return NULL;
 168 }
 169
 170 /** Update client name attribute with its title
 171  * \param c the client
 172  */
 173 void
 174 client_updatetitle(Client *c)
 175 {
 176     if(!xgettextprop(globalconf.display, c->win, XInternAtom(globalconf.display, "_NET_WM_NAME", False), c->name, sizeof(c->name)))
 177         xgettextprop(globalconf.display, c->win, XInternAtom(globalconf.display, "WM_NAME", False), c->name, sizeof(c->name));
 178 }
 179
 180 /** Ban client and unmap it
 181  * \param c the client
 182  */
 183 void
 184 client_ban(Client * c)
 185 {
 186     XUnmapWindow(globalconf.display, c->win);
 187     window_setstate(c->win, IconicState);
 188 }
 189
 190 /** Attach client to the beginning of the clients stack
 191  * \param c the client
 192  */
 193 void
 194 client_attach(Client *c)
 195 {
 196     if(globalconf.clients)
 197         (globalconf.clients)->prev = c;
 198     c->next = globalconf.clients;
 199     globalconf.clients = c;
 200 }
 201
 202 /** Detach client from clients list
 203  * \param c client to detach
 204  */
 205 void
 206 client_detach(Client *c)
 207 {
 208     if(c->prev)
 209         c->prev->next = c->next;
 210     if(c->next)
 211         c->next->prev = c->prev;
 212     if(c == globalconf.clients)
 213         globalconf.clients = c->next;
 214     c->next = c->prev = NULL;
 215 }
 216
 217 /** Give focus to client, or to first client if c is NULL
 218  * \param c client
 219  * \param selscreen True if current screen is selected
 220  * \param screen Screen ID
 221  */
 222 void
 223 focus(Client *c, Bool selscreen, int screen)
 224 {
 225     /* unfocus current selected client */
 226     if(globalconf.focus->client)
 227     {
 228         window_grabbuttons(globalconf.focus->client->phys_screen,
 229                            globalconf.focus->client->win, False, True);
 230         XSetWindowBorder(globalconf.display, globalconf.focus->client->win,
 231                          globalconf.screens[screen].colors_normal[ColBorder].pixel);
 232         window_settrans(globalconf.focus->client->win,
 233                         globalconf.screens[screen].opacity_unfocused);
 234     }
 235
 236
 237     /* if c is NULL or invisible, take next client in the focus history */
 238     if((!c && selscreen) || (c && !client_isvisible(c, screen)))
 239     {
 240         c = focus_get_current_client(screen);
 241         /* if c is still NULL take next client in the stack */
 242         if(!c)
 243             for(c = globalconf.clients; c && (c->skip || !client_isvisible(c, screen)); c = c->next);
 244     }
 245
 246     if(c)
 247     {
 248         XSetWindowBorder(globalconf.display, c->win, globalconf.screens[screen].colors_selected[ColBorder].pixel);
 249         window_grabbuttons(c->phys_screen, c->win, True, True);
 250     }
 251
 252     if(!selscreen)
 253         return;
 254
 255     /* save sel in focus history */
 256     focus_add_client(c);
 257
 258     statusbar_draw_all(screen);
 259
 260     if(globalconf.focus->client)
 261     {
 262         XSetInputFocus(globalconf.display,
 263                        globalconf.focus->client->win, RevertToPointerRoot, CurrentTime);
 264         for(c = globalconf.clients; c; c = c->next)
 265             if(c != globalconf.focus->client)
 266                 window_settrans(globalconf.focus->client->win,
 267                                 globalconf.screens[screen].opacity_unfocused);
 268         window_settrans(globalconf.focus->client->win, -1);
 269     }
 270     else
 271         XSetInputFocus(globalconf.display,
 272                        RootWindow(globalconf.display, get_phys_screen(screen)),
 273                        RevertToPointerRoot, CurrentTime);
 274
 275     ewmh_update_net_active_window(get_phys_screen(screen));
 276 }
 277
 278 /** Manage a new client
 279  * \param w The window
 280  * \param wa Window attributes
 281  * \param screen Screen ID
 282  */
 283 void
 284 client_manage(Window w, XWindowAttributes *wa, int screen)
 285 {
 286     Client *c, *t = NULL;
 287     Window trans;
 288     Status rettrans;
 289     XWindowChanges wc;
 290     Area area, darea;
 291     Tag *tag;
 292
 293     c = p_new(Client, 1);
 294
 295     c->win = w;
 296     c->x = c->rx = wa->x;
 297     c->y = c->ry = wa->y;
 298     c->w = c->rw = wa->width;
 299     c->h = c->rh = wa->height;
 300     c->oldborder = wa->border_width;
 301
 302     globalconf.display = globalconf.display;
 303     c->screen = get_screen_bycoord(c->x, c->y);
 304     c->phys_screen = get_phys_screen(c->screen);
 305
 306     move_client_to_screen(c, screen, True);
 307
 308     /* update window title */
 309     client_updatetitle(c);
 310
 311     if(c->w == area.width && c->h == area.height)
 312         c->border = wa->border_width;
 313     else
 314         c->border = globalconf.screens[screen].borderpx;
 315
 316     ewmh_check_client_hints(c);
 317     /* loadprops or apply rules if no props */
 318     if(!client_loadprops(c, screen))
 319         tag_client_with_rules(c);
 320
 321     area = get_screen_area(screen, NULL, NULL);
 322
 323     /* if window request fullscreen mode */
 324     if(c->w == area.width && c->h == area.height)
 325     {
 326         c->x = area.x;
 327         c->y = area.y;
 328     }
 329     else
 330     {
 331         darea = get_display_area(c->phys_screen,
 332                                  globalconf.screens[screen].statusbar,
 333                                  &globalconf.screens[screen].padding);
 334
 335         if(c->x + c->w + 2 * c->border > darea.x + darea.width)
 336             c->x = c->rx = darea.x + darea.width - c->w - 2 * c->border;
 337         if(c->y + c->h + 2 * c->border > darea.y + darea.height)
 338             c->y = c->ry = darea.y + darea.height - c->h - 2 * c->border;
 339         if(c->x < darea.x)
 340             c->x = c->rx = darea.x;
 341         if(c->y < darea.y)
 342             c->y = c->ry = darea.y;
 343     }
 344
 345     /* set borders */
 346     wc.border_width = c->border;
 347     XConfigureWindow(globalconf.display, w, CWBorderWidth, &wc);
 348     XSetWindowBorder(globalconf.display, w, globalconf.screens[screen].colors_normal[ColBorder].pixel);
 349
 350     /* propagates border_width, if size doesn't change */
 351     window_configure(c->win, c->x, c->y, c->w, c->h, c->border);
 352
 353     /* update hints */
 354     client_updatesizehints(c);
 355     client_updatewmhints(c);
 356
 357     XSelectInput(globalconf.display, w, StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 358
 359     /* handle xshape */
 360     if(globalconf.have_shape)
 361     {
 362         XShapeSelectInput(globalconf.display, w, ShapeNotifyMask);
 363         window_setshape(c->phys_screen, c->win);
 364     }
 365
 366     /* grab buttons */
 367     window_grabbuttons(c->phys_screen, c->win, False, True);
 368
 369     /* check for transient and set tags like its parent */
 370     if((rettrans = XGetTransientForHint(globalconf.display, w, &trans) == Success)
 371        && (t = get_client_bywin(globalconf.clients, trans)))
 372         for(tag = globalconf.screens[c->screen].tags; tag; tag = tag->next)
 373             if(is_client_tagged(t, tag))
 374                 tag_client(c, tag);
 375
 376     /* should be floating if transsient or fixed */
 377     if(!c->isfloating)
 378         c->isfloating = (rettrans == Success) || c->isfixed;
 379
 380     /* save new props */
 381     client_saveprops(c);
 382
 383     /* attach to the stack */
 384     client_attach(c);
 385
 386     /* some windows require this */
 387     XMoveResizeWindow(globalconf.display, c->win, c->x, c->y, c->w, c->h);
 388
 389     focus(c, True, screen);
 390
 391     ewmh_update_net_client_list(c->phys_screen);
 392
 393     /* rearrange to display new window */
 394     arrange(screen);
 395 }
 396
 397 /** Resize client window
 398  * \param c client to resize
 399  * \param x x coord
 400  * \param y y coord
 401  * \param w width
 402  * \param h height
 403  * \param sizehints respect size hints
 404  * \param volatile_coords register coords in rx/ry/rw/rh
 405  */
 406 void
 407 client_resize(Client *c, int x, int y, int w, int h,
 408               Bool sizehints, Bool volatile_coords)
 409 {
 410     double dx, dy, max, min, ratio;
 411     XWindowChanges wc;
 412     Area area;
 413     Tag **curtags;
 414
 415     if(sizehints)
 416     {
 417         if(c->minay > 0 && c->maxay > 0 && (h - c->baseh) > 0 && (w - c->basew) > 0)
 418         {
 419             dx = (double) (w - c->basew);
 420             dy = (double) (h - c->baseh);
 421             min = (double) (c->minax) / (double) (c->minay);
 422             max = (double) (c->maxax) / (double) (c->maxay);
 423             ratio = dx / dy;
 424             if(max > 0 && min > 0 && ratio > 0)
 425             {
 426                 if(ratio < min)
 427                 {
 428                     dy = (dx * min + dy) / (min * min + 1);
 429                     dx = dy * min;
 430                     w = (int) dx + c->basew;
 431                     h = (int) dy + c->baseh;
 432                 }
 433                 else if(ratio > max)
 434                 {
 435                     dy = (dx * min + dy) / (max * max + 1);
 436                     dx = dy * min;
 437                     w = (int) dx + c->basew;
 438                     h = (int) dy + c->baseh;
 439                 }
 440             }
 441         }
 442         if(c->minw && w < c->minw)
 443             w = c->minw;
 444         if(c->minh && h < c->minh)
 445             h = c->minh;
 446         if(c->maxw && w > c->maxw)
 447             w = c->maxw;
 448         if(c->maxh && h > c->maxh)
 449             h = c->maxh;
 450         if(c->incw)
 451             w -= (w - c->basew) % c->incw;
 452         if(c->inch)
 453             h -= (h - c->baseh) % c->inch;
 454     }
 455     if(w <= 0 || h <= 0)
 456         return;
 457     /* offscreen appearance fixes */
 458     area = get_display_area(c->phys_screen,
 459                             NULL,
 460                             &globalconf.screens[c->screen].padding);
 461     if(x > area.width)
 462         x = area.width - w - 2 * c->border;
 463     if(y > area.height)
 464         y = area.height - h - 2 * c->border;
 465     if(x + w + 2 * c->border < 0)
 466         x = 0;
 467     if(y + h + 2 * c->border < 0)
 468         y = 0;
 469     if(c->x != x || c->y != y || c->w != w || c->h != h)
 470     {
 471         c->x = wc.x = x;
 472         c->y = wc.y = y;
 473         c->w = wc.width = w;
 474         c->h = wc.height = h;
 475         curtags = get_current_tags(c->screen);
 476         if(!volatile_coords
 477            && (c->isfloating
 478                || curtags[0]->layout->arrange == layout_floating))
 479         {
 480             c->rx = c->x;
 481             c->ry = c->y;
 482             c->rw = c->w;
 483             c->rh = c->h;
 484         }
 485         p_delete(&curtags);
 486         wc.border_width = c->border;
 487         XConfigureWindow(globalconf.display, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
 488         window_configure(c->win, c->x, c->y, c->w, c->h, c->border);
 489         XSync(globalconf.display, False);
 490         if((c->x >= 0 || c->y >= 0) && XineramaIsActive(globalconf.display))
 491         {
 492             int new_screen = get_screen_bycoord(c->x, c->y);
 493             if(c->screen != new_screen)
 494                 move_client_to_screen(c, new_screen, False);
 495         }
 496     }
 497 }
 498
 499 /** Save client properties as an X property
 500  * \param c client
 501  */
 502 void
 503 client_saveprops(Client *c)
 504 {
 505     int i = 0, ntags = 0;
 506     char *prop;
 507     Tag *tag;
 508
 509     for(tag = globalconf.screens[c->screen].tags; tag; tag = tag->next)
 510         ntags++;
 511
 512     prop = p_new(char, ntags + 2);
 513
 514     for(tag = globalconf.screens[c->screen].tags; tag; tag = tag->next, i++)
 515         prop[i] = is_client_tagged(c, tag) ? '1' : '0';
 516
 517     if(i <= ntags)
 518         prop[i] = c->isfloating ? '1' : '0';
 519
 520     prop[++i] = '\0';
 521
 522     XChangeProperty(globalconf.display, c->win, AWESOMEPROPS_ATOM(globalconf.display), XA_STRING, 8,
 523                     PropModeReplace, (unsigned char *) prop, i);
 524
 525     p_delete(&prop);
 526 }
 527
 528 void
 529 client_unban(Client *c)
 530 {
 531     XMapWindow(globalconf.display, c->win);
 532     window_setstate(c->win, NormalState);
 533 }
 534
 535 void
 536 client_unmanage(Client *c, long state)
 537 {
 538     XWindowChanges wc;
 539     Tag *tag;
 540
 541     wc.border_width = c->oldborder;
 542     /* The server grab construct avoids race conditions. */
 543     XGrabServer(globalconf.display);
 544     XConfigureWindow(globalconf.display, c->win, CWBorderWidth, &wc);  /* restore border */
 545     client_detach(c);
 546     if(globalconf.focus->client == c)
 547         focus(NULL, True, c->screen);
 548     focus_delete_client(c);
 549     for(tag = globalconf.screens[c->screen].tags; tag; tag = tag->next)
 550         untag_client(c, tag);
 551     XUngrabButton(globalconf.display, AnyButton, AnyModifier, c->win);
 552     window_setstate(c->win, state);
 553     XSync(globalconf.display, False);
 554     XSetErrorHandler(xerror);
 555     XUngrabServer(globalconf.display);
 556     if(state != NormalState)
 557         arrange(c->screen);
 558     p_delete(&c);
 559 }
 560
 561 void
 562 client_updatewmhints(Client *c)
 563 {
 564     XWMHints *wmh;
 565
 566     if((wmh = XGetWMHints(globalconf.display, c->win)))
 567     {
 568         c->isurgent = (wmh->flags & XUrgencyHint);
 569         if((wmh->flags & StateHint) && wmh->initial_state == WithdrawnState)
 570             c->skip = True;
 571         XFree(wmh);
 572     }
 573 }
 574
 575 void
 576 client_updatesizehints(Client *c)
 577 {
 578     long msize;
 579     XSizeHints size;
 580
 581     if(!XGetWMNormalHints(globalconf.display, c->win, &size, &msize) || !size.flags)
 582         size.flags = PSize;
 583     c->flags = size.flags;
 584     if(c->flags & PBaseSize)
 585     {
 586         c->basew = size.base_width;
 587         c->baseh = size.base_height;
 588     }
 589     else if(c->flags & PMinSize)
 590     {
 591         c->basew = size.min_width;
 592         c->baseh = size.min_height;
 593     }
 594     else
 595         c->basew = c->baseh = 0;
 596     if(c->flags & PResizeInc)
 597     {
 598         c->incw = size.width_inc;
 599         c->inch = size.height_inc;
 600     }
 601     else
 602         c->incw = c->inch = 0;
 603
 604     if(c->flags & PMaxSize)
 605     {
 606         c->maxw = size.max_width;
 607         c->maxh = size.max_height;
 608     }
 609     else
 610         c->maxw = c->maxh = 0;
 611
 612     if(c->flags & PMinSize)
 613     {
 614         c->minw = size.min_width;
 615         c->minh = size.min_height;
 616     }
 617     else if(c->flags & PBaseSize)
 618     {
 619         c->minw = size.base_width;
 620         c->minh = size.base_height;
 621     }
 622     else
 623         c->minw = c->minh = 0;
 624
 625     if(c->flags & PAspect)
 626     {
 627         c->minax = size.min_aspect.x;
 628         c->maxax = size.max_aspect.x;
 629         c->minay = size.min_aspect.y;
 630         c->maxay = size.max_aspect.y;
 631     }
 632     else
 633         c->minax = c->maxax = c->minay = c->maxay = 0;
 634
 635     if(c->maxw && c->minw && c->maxh && c->minh
 636        && c->maxw == c->minw && c->maxh == c->minh)
 637         c->isfixed = True;
 638 }
 639
 640 /** Returns True if a client is tagged
 641  * with one of the tags
 642  * \return True or False
 643  */
 644 Bool
 645 client_isvisible(Client *c, int screen)
 646 {
 647     Tag *tag;
 648
 649     if(c->screen != screen)
 650         return False;
 651
 652     for(tag = globalconf.screens[screen].tags; tag; tag = tag->next)
 653         if(tag->selected && is_client_tagged(c, tag))
 654             return True;
 655     return False;
 656 }
 657
 658 /** Set selected client transparency
 659  * \param screen Screen ID
 660  * \param arg unused arg
 661  * \ingroup ui_callback
 662  */
 663 void
 664 uicb_client_settrans(int screen __attribute__ ((unused)), char *arg)
 665 {
 666     double delta = 100.0, current_opacity = 100.0;
 667     unsigned char *data;
 668     Atom actual;
 669     int format;
 670     unsigned long n, left;
 671     unsigned int current_opacity_raw = 0;
 672     int set_prop = 0;
 673     Client *sel = globalconf.focus->client;
 674
 675     if(!sel)
 676         return;
 677
 678     XGetWindowProperty(globalconf.display, sel->win,
 679                        XInternAtom(globalconf.display, "_NET_WM_WINDOW_OPACITY", False),
 680                        0L, 1L, False, XA_CARDINAL, &actual, &format, &n, &left,
 681                        (unsigned char **) &data);
 682     if(data)
 683     {
 684         memcpy(&current_opacity_raw, data, sizeof(unsigned int));
 685         XFree(data);
 686         current_opacity = (current_opacity_raw * 100.0) / 0xffffffff;
 687     }
 688     else
 689         set_prop = 1;
 690
 691     delta = compute_new_value_from_arg(arg, current_opacity);
 692
 693     if(delta <= 0.0)
 694         delta = 0.0;
 695     else if(delta > 100.0)
 696     {
 697         delta = 100.0;
 698         set_prop = 1;
 699     }
 700
 701     if(delta == 100.0 && !set_prop)
 702         window_settrans(sel->win, -1);
 703     else
 704         window_settrans(sel->win, delta);
 705 }
 706
 707
 708 /** Set border size
 709  * \param screen Screen ID
 710  * \param arg X, +X or -X
 711  * \ingroup ui_callback
 712  */
 713 void
 714 uicb_setborder(int screen, char *arg)
 715 {
 716     if(!arg)
 717         return;
 718
 719     if((globalconf.screens[screen].borderpx = (int) compute_new_value_from_arg(arg, (double) globalconf.screens[screen].borderpx)) < 0)
 720         globalconf.screens[screen].borderpx = 0;
 721 }
 722
 723 /** Swap current with next client
 724  * \param screen Screen ID
 725  * \param arg nothing
 726  * \ingroup ui_callback
 727  */
 728 void
 729 uicb_client_swapnext(int screen, char *arg __attribute__ ((unused)))
 730 {
 731     Client *next, *sel = globalconf.focus->client;
 732
 733     if(!sel)
 734         return;
 735
 736     for(next = sel->next; next && !client_isvisible(next, screen); next = next->next);
 737     if(next)
 738     {
 739         client_swap(&globalconf.clients, sel, next);
 740         arrange(screen);
 741         /* restore focus */
 742         focus(sel, True, screen);
 743     }
 744 }
 745
 746 /** Swap current with previous client
 747  * \param screen Screen ID
 748  * \param arg nothing
 749  * \ingroup ui_callback
 750  */
 751 void
 752 uicb_client_swapprev(int screen, char *arg __attribute__ ((unused)))
 753 {
 754     Client *prev, *sel = globalconf.focus->client;
 755
 756     if(!sel)
 757         return;
 758
 759     for(prev = sel->prev; prev && !client_isvisible(prev, screen); prev = prev->prev);
 760     if(prev)
 761     {
 762         client_swap(&globalconf.clients, prev, sel);
 763         arrange(screen);
 764         /* restore focus */
 765         focus(sel, True, screen);
 766     }
 767 }
 768
 769 /** Move and resize client
 770  * \param screen Screen ID
 771  * \param arg x y w h
 772  * \ingroup ui_callback
 773  */
 774 void
 775 uicb_client_moveresize(int screen, char *arg)
 776 {
 777     int nx, ny, nw, nh, ox, oy, ow, oh;
 778     char x[8], y[8], w[8], h[8];
 779     int mx, my, dx, dy, nmx, nmy;
 780     unsigned int dui;
 781     Window dummy;
 782     Client *sel = globalconf.focus->client;
 783     Tag **curtags = get_current_tags(screen);
 784
 785     if(curtags[0]->layout->arrange != layout_floating)
 786         if(!sel || !sel->isfloating || sel->isfixed || !arg)
 787         {
 788             p_delete(&curtags);
 789             return;
 790         }
 791     p_delete(&curtags);
 792     if(sscanf(arg, "%s %s %s %s", x, y, w, h) != 4)
 793         return;
 794     nx = (int) compute_new_value_from_arg(x, sel->x);
 795     ny = (int) compute_new_value_from_arg(y, sel->y);
 796     nw = (int) compute_new_value_from_arg(w, sel->w);
 797     nh = (int) compute_new_value_from_arg(h, sel->h);
 798
 799     ox = sel->x;
 800     oy = sel->y;
 801     ow = sel->w;
 802     oh = sel->h;
 803
 804     Bool xqp = XQueryPointer(globalconf.display,
 805                              RootWindow(globalconf.display,
 806                                         get_phys_screen(screen)),
 807                              &dummy, &dummy, &mx, &my, &dx, &dy, &dui);
 808     client_resize(sel, nx, ny, nw, nh, True, False);
 809     if (xqp && ox <= mx && (ox + ow) >= mx && oy <= my && (oy + oh) >= my)
 810     {
 811         nmx = mx - ox + sel->w - ow - 1 < 0 ? 0 : mx - ox + sel->w - ow - 1;
 812         nmy = my - oy + sel->h - oh - 1 < 0 ? 0 : my - oy + sel->h - oh - 1;
 813         XWarpPointer(globalconf.display,
 814                      None, sel->win,
 815                      0, 0, 0, 0, nmx, nmy);
 816     }
 817 }
 818
 819
 820 void
 821 client_kill(Client *c)
 822 {
 823     XEvent ev;
 824
 825     if(isprotodel(globalconf.display, c->win))
 826     {
 827         ev.type = ClientMessage;
 828         ev.xclient.window = c->win;
 829         ev.xclient.message_type = XInternAtom(globalconf.display, "WM_PROTOCOLS", False);
 830         ev.xclient.format = 32;
 831         ev.xclient.data.l[0] = XInternAtom(globalconf.display, "WM_DELETE_WINDOW", False);
 832         ev.xclient.data.l[1] = CurrentTime;
 833         XSendEvent(globalconf.display, c->win, False, NoEventMask, &ev);
 834     }
 835     else
 836         XKillClient(globalconf.display, c->win);
 837 }
 838
 839 /** Kill selected client
 840  * \param screen Screen ID
 841  * \param arg unused
 842  * \ingroup ui_callback
 843  */
 844 void
 845 uicb_client_kill(int screen __attribute__ ((unused)), char *arg __attribute__ ((unused)))
 846 {
 847     Client *sel = globalconf.focus->client;
 848
 849     if(sel)
 850         client_kill(sel);
 851 }
 852
 853 void
 854 client_maximize(Client *c, int x, int y, int w, int h)
 855 {
 856     if((c->ismax = !c->ismax))
 857     {
 858         c->oldborder = c->border;
 859         c->border = 0;
 860         c->wasfloating = c->isfloating;
 861         c->isfloating = True;
 862         client_resize(c, x, y, w, h, False, True);
 863     }
 864     else if(c->wasfloating)
 865         client_resize(c, c->rx, c->ry, c->rw, c->rh, True, False);
 866     else
 867         c->isfloating = False;
 868
 869     c->border = c->oldborder;
 870
 871     arrange(c->screen);
 872 }
 873
 874 /** Toggle maximize for client
 875  * \param screen Screen ID
 876  * \param arg Unused
 877  * \ingroup ui_callback
 878  */
 879 void
 880 uicb_client_togglemax(int screen, char *arg __attribute__ ((unused)))
 881 {
 882     Client *sel = globalconf.focus->client;
 883     Area area = get_screen_area(screen,
 884                                 globalconf.screens[screen].statusbar,
 885                                 &globalconf.screens[screen].padding);
 886     if(sel)
 887         client_maximize(sel, area.x, area.y,
 888                         area.width - 2 * globalconf.screens[screen].borderpx,
 889                         area.height - 2 * globalconf.screens[screen].borderpx);
 890 }
 891
 892 /** Toggle vertical maximize for client
 893  * \param screen Screen ID
 894  * \param arg Unused
 895  * \ingroup ui_callback
 896  */
 897 void
 898 uicb_client_toggleverticalmax(int screen, char *arg __attribute__ ((unused)))
 899 {
 900     Client *sel = globalconf.focus->client;
 901     Area area = get_screen_area(screen,
 902                                 globalconf.screens[screen].statusbar,
 903                                 &globalconf.screens[screen].padding);
 904
 905     if(sel)
 906         client_maximize(sel, sel->x, area.y,
 907                         sel->w,
 908                         area.height - 2 * globalconf.screens[screen].borderpx);
 909 }
 910
 911
 912 /** Toggle horizontal maximize for client
 913  * \param screen Screen ID
 914  * \param arg Unused
 915  * \ingroup ui_callback
 916  */
 917 void
 918 uicb_client_togglehorizontalmax(int screen, char *arg __attribute__ ((unused)))
 919 {
 920     Client *sel = globalconf.focus->client;
 921     Area area = get_screen_area(screen,
 922                                 globalconf.screens[screen].statusbar,
 923                                 &globalconf.screens[screen].padding);
 924
 925     if(sel)
 926         client_maximize(sel, area.x, sel->y,
 927                         area.height - 2 * globalconf.screens[screen].borderpx,
 928                         sel->h);
 929 }
 930
 931 /** Zoom client
 932  * \param screen Screen ID
 933  * \param arg Unused
 934  * \ingroup ui_callback
 935  */
 936 void
 937 uicb_client_zoom(int screen, char *arg __attribute__ ((unused)))
 938 {
 939     Client *sel = globalconf.focus->client;
 940
 941     if(globalconf.clients == sel)
 942          for(sel = sel->next; sel && !client_isvisible(sel, screen); sel = sel->next);
 943
 944     if(!sel)
 945         return;
 946
 947     client_detach(sel);
 948     client_attach(sel);
 949
 950     focus(sel, True, screen);
 951     arrange(screen);
 952 }
 953
 954 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80