event.c

   1 /*
   2  * event.c - event handlers
   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 <X11/keysym.h>
  23 #include <X11/Xatom.h>
  24 #include <X11/Xutil.h>
  25 #include <X11/extensions/shape.h>
  26 #include <X11/extensions/Xrandr.h>
  27
  28 #include "screen.h"
  29 #include "event.h"
  30 #include "layout.h"
  31 #include "tag.h"
  32 #include "draw.h"
  33 #include "statusbar.h"
  34 #include "util.h"
  35 #include "layouts/tile.h"
  36 #include "layouts/floating.h"
  37
  38 /* extern */
  39 extern DC *dc;                   /* global draw context */
  40 extern Client *clients, *sel;   /* global client list */
  41
  42 #define CLEANMASK(mask, screen)         (mask & ~(awesomeconf[screen].numlockmask | LockMask))
  43 #define MOUSEMASK                       (BUTTONMASK | PointerMotionMask)
  44
  45 static Client *
  46 getclient(Window w)
  47 {
  48     Client *c;
  49
  50     for(c = clients; c && c->win != w; c = c->next);
  51     return c;
  52 }
  53
  54 static void
  55 movemouse(Client * c, awesome_config *awesomeconf)
  56 {
  57     int x1, y1, ocx, ocy, di, nx, ny;
  58     unsigned int dui;
  59     Window dummy;
  60     XEvent ev;
  61     ScreenInfo *si;
  62
  63     si = get_display_info(c->display, c->screen, awesomeconf->statusbar);
  64
  65     ocx = nx = c->x;
  66     ocy = ny = c->y;
  67     if(XGrabPointer(c->display, RootWindow(c->display, c->screen), False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  68                     None, dc[c->screen].cursor[CurMove], CurrentTime) != GrabSuccess)
  69         return;
  70     XQueryPointer(c->display, RootWindow(c->display, c->screen), &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  71     for(;;)
  72     {
  73         XMaskEvent(c->display, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
  74         switch (ev.type)
  75         {
  76         case ButtonRelease:
  77             XUngrabPointer(c->display, CurrentTime);
  78             return;
  79         case ConfigureRequest:
  80         case Expose:
  81         case MapRequest:
  82             handle_event_maprequest(&ev, awesomeconf);
  83             break;
  84         case MotionNotify:
  85             XSync(c->display, False);
  86             nx = ocx + (ev.xmotion.x - x1);
  87             ny = ocy + (ev.xmotion.y - y1);
  88             if(abs(si->x_org + nx) < awesomeconf->snap)
  89                 nx = si->x_org;
  90             else if(abs((si->x_org + si->width) - (nx + c->w + 2 * c->border)) < awesomeconf->snap)
  91                 nx = si->x_org + si->width - c->w - 2 * c->border;
  92             if(abs(si->y_org - ny) < awesomeconf->snap)
  93                 ny = si->y_org;
  94             else if(abs((si->y_org + si->height) - (ny + c->h + 2 * c->border)) < awesomeconf->snap)
  95                 ny = si->y_org + si->height - c->h - 2 * c->border;
  96             resize(c, nx, ny, c->w, c->h, False);
  97             break;
  98         }
  99     }
 100     XFree(si);
 101 }
 102
 103 static void
 104 resizemouse(Client * c, awesome_config *awesomeconf)
 105 {
 106     int ocx, ocy;
 107     int nw, nh;
 108     XEvent ev;
 109
 110     ocx = c->x;
 111     ocy = c->y;
 112     if(XGrabPointer(c->display, RootWindow(c->display, c->screen), False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
 113                     None, dc[c->screen].cursor[CurResize], CurrentTime) != GrabSuccess)
 114         return;
 115     c->ismax = False;
 116     XWarpPointer(c->display, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
 117     for(;;)
 118     {
 119         XMaskEvent(c->display, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
 120         switch (ev.type)
 121         {
 122         case ButtonRelease:
 123             XWarpPointer(c->display, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
 124             XUngrabPointer(c->display, CurrentTime);
 125             while(XCheckMaskEvent(c->display, EnterWindowMask, &ev));
 126             return;
 127         case ConfigureRequest:
 128         case Expose:
 129         case MapRequest:
 130             handle_event_maprequest(&ev, awesomeconf);
 131             break;
 132         case MotionNotify:
 133             XSync(c->display, False);
 134             if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
 135                 nw = 1;
 136             if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
 137                 nh = 1;
 138             resize(c, c->x, c->y, nw, nh, True);
 139             break;
 140         }
 141     }
 142 }
 143
 144 void
 145 handle_event_buttonpress(XEvent * e, awesome_config *awesomeconf)
 146 {
 147     int i, screen;
 148     Client *c;
 149     XButtonPressedEvent *ev = &e->xbutton;
 150
 151     for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 152         if(awesomeconf[screen].statusbar.window == ev->window)
 153         {
 154             int x = 0;
 155             for(i = 0; i < awesomeconf[screen].ntags; i++)
 156             {
 157                 x += textw(dc[screen].font.set, dc[screen].font.xfont, awesomeconf[screen].tags[i], dc[screen].font.height);
 158                 if(ev->x < x)
 159                 {
 160                     if(ev->button == Button1)
 161                     {
 162                         if(ev->state & awesomeconf[screen].modkey)
 163                             uicb_tag(e->xany.display, screen, &dc[screen], &awesomeconf[screen], awesomeconf[screen].tags[i]);
 164                         else
 165                             uicb_view(e->xany.display, screen, &dc[screen], &awesomeconf[screen], awesomeconf[screen].tags[i]);
 166                     }
 167                     else if(ev->button == Button3)
 168                     {
 169                         if(ev->state & awesomeconf[screen].modkey)
 170                             uicb_toggletag(e->xany.display, screen, &dc[screen], &awesomeconf[screen], awesomeconf[screen].tags[i]);
 171                         else
 172                             uicb_toggleview(e->xany.display, screen, &dc[screen], &awesomeconf[screen], awesomeconf[screen].tags[i]);
 173                     }
 174                     return;
 175                 }
 176             }
 177             if((ev->x < x + awesomeconf[screen].statusbar.width) && ev->button == Button1)
 178                 uicb_setlayout(e->xany.display, screen, &dc[screen], &awesomeconf[screen], NULL);
 179             return;
 180         }
 181
 182     if((c = getclient(ev->window)))
 183     {
 184         focus(c->display, c->screen, &dc[c->screen], c, ev->same_screen, &awesomeconf[c->screen]);
 185         if(CLEANMASK(ev->state, c->screen) != awesomeconf[c->screen].modkey)
 186             return;
 187         if(ev->button == Button1 && (IS_ARRANGE(floating) || c->isfloating))
 188         {
 189             restack(e->xany.display, c->screen, &dc[c->screen], &awesomeconf[c->screen]);
 190             movemouse(c, &awesomeconf[c->screen]);
 191         }
 192         else if(ev->button == Button2)
 193             uicb_zoom(e->xany.display, c->screen, &dc[c->screen], &awesomeconf[c->screen], NULL);
 194         else if(ev->button == Button3 && (IS_ARRANGE(floating) || c->isfloating) && !c->isfixed)
 195         {
 196             restack(e->xany.display, c->screen, &dc[c->screen], &awesomeconf[c->screen]);
 197             resizemouse(c, &awesomeconf[c->screen]);
 198         }
 199     }
 200     else if(!sel)
 201         for(screen = 0; screen < ScreenCount(e->xany.display); i++)
 202             if(RootWindow(e->xany.display, screen) == ev->window)
 203             {
 204                 if(ev->button == Button4)
 205                     uicb_tag_viewnext(e->xany.display, screen, &dc[screen], &awesomeconf[screen], NULL);
 206                 else if(ev->button == Button5)
 207                     uicb_tag_viewprev(e->xany.display, screen, &dc[screen], &awesomeconf[screen], NULL);
 208             }
 209 }
 210
 211 void
 212 handle_event_configurerequest(XEvent * e, awesome_config *awesomeconf __attribute__ ((unused)))
 213 {
 214     Client *c;
 215     XConfigureRequestEvent *ev = &e->xconfigurerequest;
 216     XWindowChanges wc;
 217
 218     if((c = getclient(ev->window)))
 219     {
 220         c->ismax = False;
 221         if(ev->value_mask & CWBorderWidth)
 222             c->border = ev->border_width;
 223         if(c->isfixed || c->isfloating || IS_ARRANGE(floating))
 224         {
 225             if(ev->value_mask & CWX)
 226                 c->x = ev->x;
 227             if(ev->value_mask & CWY)
 228                 c->y = ev->y;
 229             if(ev->value_mask & CWWidth)
 230                 c->w = ev->width;
 231             if(ev->value_mask & CWHeight)
 232                 c->h = ev->height;
 233             if((c->x + c->w) > DisplayWidth(c->display, c->screen) && c->isfloating)
 234                 c->x = DisplayWidth(c->display, c->screen) / 2 - c->w / 2;       /* center in x direction */
 235             if((c->y + c->h) > DisplayHeight(c->display, c->screen) && c->isfloating)
 236                 c->y = DisplayHeight(c->display, c->screen) / 2 - c->h / 2;       /* center in y direction */
 237             if((ev->value_mask & (CWX | CWY)) && !(ev->value_mask & (CWWidth | CWHeight)))
 238                 configure(c);
 239             if(isvisible(c, c->screen, awesomeconf[c->screen].selected_tags, awesomeconf[c->screen].ntags))
 240                 XMoveResizeWindow(e->xany.display, c->win, c->x, c->y, c->w, c->h);
 241         }
 242         else
 243             configure(c);
 244     }
 245     else
 246     {
 247         wc.x = ev->x;
 248         wc.y = ev->y;
 249         wc.width = ev->width;
 250         wc.height = ev->height;
 251         wc.border_width = ev->border_width;
 252         wc.sibling = ev->above;
 253         wc.stack_mode = ev->detail;
 254         XConfigureWindow(e->xany.display, ev->window, ev->value_mask, &wc);
 255     }
 256     XSync(e->xany.display, False);
 257 }
 258
 259 void
 260 handle_event_configurenotify(XEvent * e, awesome_config *awesomeconf)
 261 {
 262     XConfigureEvent *ev = &e->xconfigure;
 263     int screen;
 264
 265     for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 266         if(ev->window == RootWindow(e->xany.display, screen)
 267            && (ev->width != DisplayWidth(e->xany.display, screen)
 268                || ev->height != DisplayHeight(e->xany.display, screen)))
 269         {
 270             DisplayWidth(e->xany.display, screen) = ev->width;
 271             DisplayHeight(e->xany.display, screen) = ev->height;
 272             XFreePixmap(e->xany.display, awesomeconf[screen].statusbar.drawable);
 273             awesomeconf[screen].statusbar.drawable = XCreatePixmap(e->xany.display, RootWindow(e->xany.display, screen),
 274                                                                    DisplayWidth(e->xany.display, screen),
 275                                                                    awesomeconf[screen].statusbar.height,
 276                                                                    DefaultDepth(e->xany.display, screen));
 277             XResizeWindow(e->xany.display, awesomeconf[screen].statusbar.window,
 278                           DisplayWidth(e->xany.display, screen), awesomeconf[screen].statusbar.height);
 279             updatebarpos(e->xany.display, awesomeconf[screen].statusbar);
 280             arrange(e->xany.display, screen, &dc[screen], &awesomeconf[screen]);
 281         }
 282 }
 283
 284 void
 285 handle_event_destroynotify(XEvent * e, awesome_config *awesomeconf)
 286 {
 287     Client *c;
 288     XDestroyWindowEvent *ev = &e->xdestroywindow;
 289
 290     if((c = getclient(ev->window)))
 291         unmanage(c, &dc[c->screen], WithdrawnState, &awesomeconf[c->screen]);
 292 }
 293
 294 void
 295 handle_event_enternotify(XEvent * e, awesome_config *awesomeconf)
 296 {
 297     Client *c;
 298     XCrossingEvent *ev = &e->xcrossing;
 299     int screen;
 300
 301     if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 302         return;
 303     if((c = getclient(ev->window)))
 304         focus(c->display, c->screen, &dc[c->screen], c, ev->same_screen, &awesomeconf[c->screen]);
 305     else
 306         for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 307             if(ev->window == RootWindow(e->xany.display, screen))
 308                 focus(e->xany.display, screen, &dc[screen], NULL, True, &awesomeconf[screen]);
 309 }
 310
 311 void
 312 handle_event_expose(XEvent * e, awesome_config *awesomeconf)
 313 {
 314     XExposeEvent *ev = &e->xexpose;
 315     int screen;
 316
 317     if(!ev->count)
 318         for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 319             if(awesomeconf[screen].statusbar.window == ev->window)
 320                 drawstatusbar(e->xany.display, screen, &dc[screen], &awesomeconf[screen]);
 321 }
 322
 323 void
 324 handle_event_keypress(XEvent * e, awesome_config *awesomeconf)
 325 {
 326     int i, screen, x, y, d;
 327     unsigned int m;
 328     KeySym keysym;
 329     XKeyEvent *ev = &e->xkey;
 330     Window dummy;
 331
 332     keysym = XKeycodeToKeysym(e->xany.display, (KeyCode) ev->keycode, 0);
 333
 334     for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 335         if(XQueryPointer(e->xany.display, RootWindow(e->xany.display, screen), &dummy, &dummy, &y, &x, &d, &d, &m))
 336             for(i = 0; i < awesomeconf[screen].nkeys; i++)
 337                 if(keysym == awesomeconf[screen].keys[i].keysym
 338                    && CLEANMASK(awesomeconf[screen].keys[i].mod, screen) == CLEANMASK(ev->state, screen) && awesomeconf[screen].keys[i].func)
 339                         awesomeconf[screen].keys[i].func(e->xany.display, screen, &dc[screen], &awesomeconf[screen], awesomeconf[screen].keys[i].arg);
 340 }
 341
 342 void
 343 handle_event_leavenotify(XEvent * e, awesome_config *awesomeconf)
 344 {
 345     XCrossingEvent *ev = &e->xcrossing;
 346     int screen;
 347
 348     for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 349         if((ev->window == RootWindow(e->xany.display, screen)) && !ev->same_screen)
 350             focus(e->xany.display, screen, &dc[screen], NULL, ev->same_screen, &awesomeconf[screen]);
 351 }
 352
 353 void
 354 handle_event_mappingnotify(XEvent * e, awesome_config *awesomeconf)
 355 {
 356     XMappingEvent *ev = &e->xmapping;
 357     int screen;
 358
 359     XRefreshKeyboardMapping(ev);
 360     if(ev->request == MappingKeyboard)
 361         for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 362             grabkeys(e->xany.display, screen, &awesomeconf[screen]);
 363 }
 364
 365 void
 366 handle_event_maprequest(XEvent * e, awesome_config *awesomeconf)
 367 {
 368     static XWindowAttributes wa;
 369     XMapRequestEvent *ev = &e->xmaprequest;
 370     int screen;
 371
 372     if(!XGetWindowAttributes(e->xany.display, ev->window, &wa))
 373         return;
 374     if(wa.override_redirect)
 375         return;
 376     if(!getclient(ev->window))
 377     {
 378         for(screen = 0; wa.screen != ScreenOfDisplay(e->xany.display, screen); screen++);
 379         manage(e->xany.display, screen, &dc[screen], ev->window, &wa, &awesomeconf[screen]);
 380     }
 381 }
 382
 383 void
 384 handle_event_propertynotify(XEvent * e, awesome_config *awesomeconf)
 385 {
 386     Client *c;
 387     Window trans;
 388     XPropertyEvent *ev = &e->xproperty;
 389
 390     if(ev->state == PropertyDelete)
 391         return;                 /* ignore */
 392     if((c = getclient(ev->window)))
 393     {
 394         switch (ev->atom)
 395         {
 396         case XA_WM_TRANSIENT_FOR:
 397             XGetTransientForHint(e->xany.display, c->win, &trans);
 398             if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
 399                 arrange(e->xany.display, c->screen, &dc[c->screen], &awesomeconf[c->screen]);
 400             break;
 401         case XA_WM_NORMAL_HINTS:
 402             updatesizehints(c);
 403             break;
 404         }
 405         if(ev->atom == XA_WM_NAME || ev->atom == XInternAtom(c->display, "_NET_WM_NAME", False))
 406         {
 407             updatetitle(c);
 408             if(c == sel)
 409                 drawstatusbar(e->xany.display, c->screen, &dc[c->screen], &awesomeconf[c->screen]);
 410         }
 411     }
 412 }
 413
 414 void
 415 handle_event_unmapnotify(XEvent * e, awesome_config *awesomeconf)
 416 {
 417     Client *c;
 418     XUnmapEvent *ev = &e->xunmap;
 419
 420     if((c = getclient(ev->window))
 421        && ev->event == RootWindow(e->xany.display, c->screen) && (ev->send_event || !c->unmapped--))
 422         unmanage(c, &dc[c->screen], WithdrawnState, &awesomeconf[c->screen]);
 423 }
 424
 425 void
 426 handle_event_shape(XEvent * e,
 427                    awesome_config *awesomeconf __attribute__ ((unused)))
 428 {
 429     XShapeEvent *ev = (XShapeEvent *) e;
 430     Client *c = getclient(ev->window);
 431
 432     if(c)
 433         set_shape(c);
 434 }
 435
 436 void
 437 handle_event_randr_screen_change_notify(XEvent *e,
 438                                         awesome_config *awesomeconf __attribute__ ((unused)))
 439 {
 440     XRRUpdateConfiguration(e);
 441 }
 442
 443 void
 444 grabkeys(Display *disp, int screen, awesome_config *awesomeconf)
 445 {
 446     int i;
 447     KeyCode code;
 448
 449     XUngrabKey(disp, AnyKey, AnyModifier, RootWindow(disp, screen));
 450     for(i = 0; i < awesomeconf->nkeys; i++)
 451     {
 452         if((code = XKeysymToKeycode(disp, awesomeconf->keys[i].keysym)) == NoSymbol)
 453             continue;
 454         XGrabKey(disp, code, awesomeconf->keys[i].mod, RootWindow(disp, screen), True, GrabModeAsync, GrabModeAsync);
 455         XGrabKey(disp, code, awesomeconf->keys[i].mod | LockMask, RootWindow(disp, screen), True, GrabModeAsync, GrabModeAsync);
 456         XGrabKey(disp, code, awesomeconf->keys[i].mod | awesomeconf->numlockmask, RootWindow(disp, screen), True, GrabModeAsync, GrabModeAsync);
 457         XGrabKey(disp, code, awesomeconf->keys[i].mod | awesomeconf->numlockmask | LockMask, RootWindow(disp, screen), True,
 458                  GrabModeAsync, GrabModeAsync);
 459     }
 460 }