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_screen_info(c->display, c->screen, NULL);
  64
  65     ocx = nx = c->x;
  66     ocy = ny = c->y;
  67     if(XGrabPointer(c->display, RootWindow(c->display, c->phys_screen), False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  68                     None, dc[c->screen].cursor[CurMove], CurrentTime) != GrabSuccess)
  69         return;
  70     XQueryPointer(c->display, RootWindow(c->display, c->phys_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(nx) < awesomeconf->snap + si[c->screen].x_org && nx > si[c->screen].x_org)
  89                 nx = si[c->screen].x_org;
  90             else if(abs((si[c->screen].x_org + si[c->screen].width) - (nx + c->w + 2 * c->border)) < awesomeconf->snap)
  91                 nx = si[c->screen].x_org + si[c->screen].width - c->w - 2 * c->border;
  92             if(abs(ny) < awesomeconf->snap + si[c->screen].y_org && ny > si[c->screen].y_org)
  93                 ny = si[c->screen].y_org;
  94             else if(abs((si[c->screen].y_org + si[c->screen].height) - (ny + c->h + 2 * c->border)) < awesomeconf->snap)
  95                 ny = si[c->screen].y_org + si[c->screen].height - c->h - 2 * c->border;
  96             resize(c, nx, ny, c->w, c->h, awesomeconf, 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, nw, nh;
 107     XEvent ev;
 108
 109     ocx = c->x;
 110     ocy = c->y;
 111     if(XGrabPointer(c->display, RootWindow(c->display, c->phys_screen),
 112                     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, awesomeconf, 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 < get_screen_count(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 += textwidth(e->xany.display, dc[screen].font, awesomeconf[screen].tags[i].name, a_strlen(awesomeconf[screen].tags[i].name)) + 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, &dc[screen], &awesomeconf[screen], awesomeconf[screen].tags[i].name);
 164                         else
 165                             uicb_view(e->xany.display, &dc[screen], &awesomeconf[screen], awesomeconf[screen].tags[i].name);
 166                     }
 167                     else if(ev->button == Button3)
 168                     {
 169                         if(ev->state & awesomeconf[screen].modkey)
 170                             uicb_toggletag(e->xany.display, &dc[screen], &awesomeconf[screen], awesomeconf[screen].tags[i].name);
 171                         else
 172                             uicb_toggleview(e->xany.display, &dc[screen], &awesomeconf[screen], awesomeconf[screen].tags[i].name);
 173                     }
 174                     return;
 175                 }
 176             }
 177             if((ev->x < x + awesomeconf[screen].statusbar.width) && ev->button == Button1)
 178                 uicb_setlayout(e->xany.display, &dc[screen], &awesomeconf[screen], "+1");
 179             else if((ev->x < x + awesomeconf[screen].statusbar.width) && ev->button == Button3)
 180                 uicb_setlayout(e->xany.display, &dc[screen], &awesomeconf[screen], "-1");
 181             return;
 182         }
 183
 184     if((c = getclient(ev->window)))
 185     {
 186         focus(c->display, &dc[c->screen], c, ev->same_screen, &awesomeconf[c->screen]);
 187         if(CLEANMASK(ev->state, c->screen) != awesomeconf[c->screen].modkey)
 188             return;
 189         if(ev->button == Button1)
 190         {
 191             if(!IS_ARRANGE(layout_floating) && !c->isfloating)
 192                 uicb_togglefloating(e->xany.display, &dc[c->screen], &awesomeconf[c->screen], NULL);
 193             else
 194                 restack(e->xany.display, &dc[c->screen], &awesomeconf[c->screen]);
 195             movemouse(c, &awesomeconf[c->screen]);
 196         }
 197         else if(ev->button == Button2)
 198         {
 199             if(!IS_ARRANGE(layout_floating) && !c->isfixed && c->isfloating)
 200                 uicb_togglefloating(e->xany.display, &dc[c->screen], &awesomeconf[c->screen], NULL);
 201             else
 202                 uicb_zoom(e->xany.display, &dc[c->screen], &awesomeconf[c->screen], NULL);
 203         }
 204         else if(ev->button == Button3)
 205         {
 206             if(!IS_ARRANGE(layout_floating) && !c->isfloating)
 207                 uicb_togglefloating(e->xany.display, &dc[c->screen], &awesomeconf[c->screen], NULL);
 208             else
 209                 restack(e->xany.display, &dc[c->screen], &awesomeconf[c->screen]);
 210             resizemouse(c, &awesomeconf[c->screen]);
 211         }
 212     }
 213     else if(!sel)
 214         for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 215             if(RootWindow(e->xany.display, screen) == ev->window)
 216             {
 217                 if(ev->button == Button4)
 218                     uicb_tag_viewnext(e->xany.display, &dc[screen], &awesomeconf[screen], NULL);
 219                 else if(ev->button == Button5)
 220                     uicb_tag_viewprev(e->xany.display, &dc[screen], &awesomeconf[screen], NULL);
 221             }
 222 }
 223
 224 void
 225 handle_event_configurerequest(XEvent * e, awesome_config *awesomeconf)
 226 {
 227     Client *c;
 228     XConfigureRequestEvent *ev = &e->xconfigurerequest;
 229     XWindowChanges wc;
 230
 231     if((c = getclient(ev->window)))
 232     {
 233         c->ismax = False;
 234         if(ev->value_mask & CWBorderWidth)
 235             c->border = ev->border_width;
 236         if(c->isfixed || c->isfloating || IS_ARRANGE(layout_floating))
 237         {
 238             if(ev->value_mask & CWX)
 239                 c->x = ev->x;
 240             if(ev->value_mask & CWY)
 241                 c->y = ev->y;
 242             if(ev->value_mask & CWWidth)
 243                 c->w = ev->width;
 244             if(ev->value_mask & CWHeight)
 245                 c->h = ev->height;
 246             if((c->x + c->w) > DisplayWidth(c->display, c->phys_screen) && c->isfloating)
 247                 c->x = DisplayWidth(c->display, c->phys_screen) / 2 - c->w / 2;       /* center in x direction */
 248             if((c->y + c->h) > DisplayHeight(c->display, c->phys_screen) && c->isfloating)
 249                 c->y = DisplayHeight(c->display, c->phys_screen) / 2 - c->h / 2;       /* center in y direction */
 250             if((ev->value_mask & (CWX | CWY)) && !(ev->value_mask & (CWWidth | CWHeight)))
 251                 configure(c);
 252             if(isvisible(c, c->screen, awesomeconf[c->screen].tags, awesomeconf[c->screen].ntags))
 253                 XMoveResizeWindow(e->xany.display, c->win, c->x, c->y, c->w, c->h);
 254         }
 255         else
 256             configure(c);
 257     }
 258     else
 259     {
 260         wc.x = ev->x;
 261         wc.y = ev->y;
 262         wc.width = ev->width;
 263         wc.height = ev->height;
 264         wc.border_width = ev->border_width;
 265         wc.sibling = ev->above;
 266         wc.stack_mode = ev->detail;
 267         XConfigureWindow(e->xany.display, ev->window, ev->value_mask, &wc);
 268     }
 269     XSync(e->xany.display, False);
 270 }
 271
 272 void
 273 handle_event_configurenotify(XEvent * e, awesome_config *awesomeconf)
 274 {
 275     XConfigureEvent *ev = &e->xconfigure;
 276     int screen;
 277     ScreenInfo *si;
 278
 279     for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 280         if(ev->window == RootWindow(e->xany.display, screen)
 281            && (ev->width != DisplayWidth(e->xany.display, screen)
 282                || ev->height != DisplayHeight(e->xany.display, screen)))
 283         {
 284             DisplayWidth(e->xany.display, screen) = ev->width;
 285             DisplayHeight(e->xany.display, screen) = ev->height;
 286
 287             si = get_screen_info(e->xany.display, screen, NULL);
 288             XFreePixmap(e->xany.display, awesomeconf[screen].statusbar.drawable);
 289             awesomeconf[screen].statusbar.drawable = XCreatePixmap(e->xany.display, RootWindow(e->xany.display, screen),
 290                                                                    si[screen].width,
 291                                                                    awesomeconf[screen].statusbar.height,
 292                                                                    DefaultDepth(e->xany.display, screen));
 293             XResizeWindow(e->xany.display, awesomeconf[screen].statusbar.window,
 294                           si[screen].width, awesomeconf[screen].statusbar.height);
 295             XFree(si);
 296             updatebarpos(e->xany.display, awesomeconf[screen].statusbar);
 297             arrange(e->xany.display, &dc[screen], &awesomeconf[screen]);
 298         }
 299 }
 300
 301 void
 302 handle_event_destroynotify(XEvent * e, awesome_config *awesomeconf)
 303 {
 304     Client *c;
 305     XDestroyWindowEvent *ev = &e->xdestroywindow;
 306
 307     if((c = getclient(ev->window)))
 308         unmanage(c, &dc[c->screen], WithdrawnState, &awesomeconf[c->screen]);
 309 }
 310
 311 void
 312 handle_event_enternotify(XEvent * e, awesome_config *awesomeconf)
 313 {
 314     Client *c;
 315     XCrossingEvent *ev = &e->xcrossing;
 316     int screen;
 317
 318     if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 319         return;
 320     if((c = getclient(ev->window)))
 321         focus(c->display, &dc[c->screen], c, ev->same_screen, &awesomeconf[c->screen]);
 322     else
 323         for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 324             if(ev->window == RootWindow(e->xany.display, screen))
 325                 focus(e->xany.display, &dc[screen], NULL, True, &awesomeconf[screen]);
 326 }
 327
 328 void
 329 handle_event_expose(XEvent * e, awesome_config *awesomeconf)
 330 {
 331     XExposeEvent *ev = &e->xexpose;
 332     int screen;
 333
 334     if(!ev->count)
 335         for(screen = 0; screen < get_screen_count(e->xany.display); screen++)
 336             if(awesomeconf[screen].statusbar.window == ev->window)
 337                 drawstatusbar(e->xany.display, &dc[screen], &awesomeconf[screen]);
 338 }
 339
 340 void
 341 handle_event_keypress(XEvent * e, awesome_config *awesomeconf)
 342 {
 343     int i, screen, x, y, d;
 344     unsigned int m;
 345     KeySym keysym;
 346     XKeyEvent *ev = &e->xkey;
 347     Window dummy;
 348
 349     keysym = XKeycodeToKeysym(e->xany.display, (KeyCode) ev->keycode, 0);
 350
 351     /* find the right screen for this event */
 352     for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 353         if(XQueryPointer(e->xany.display, RootWindow(e->xany.display, screen), &dummy, &dummy, &x, &y, &d, &d, &m))
 354         {
 355             /* if screen is 0, we are on first Zaphod screen or on the
 356              * only screen in Xinerama, so we can ask for a better screen
 357              * number with get_screen_bycoord: we'll get 0 in Zaphod mode
 358              * so it's the same, or maybe the real Xinerama screen */
 359            if(screen == 0)
 360                screen = get_screen_bycoord(e->xany.display, x, y);
 361            break;
 362         }
 363
 364     for(i = 0; i < awesomeconf[screen].nkeys; i++)
 365         if(keysym == awesomeconf[screen].keys[i].keysym
 366            && CLEANMASK(awesomeconf[screen].keys[i].mod, screen) == CLEANMASK(ev->state, screen) && awesomeconf[screen].keys[i].func)
 367             awesomeconf[screen].keys[i].func(e->xany.display, &dc[screen], &awesomeconf[screen], awesomeconf[screen].keys[i].arg);
 368 }
 369
 370 void
 371 handle_event_leavenotify(XEvent * e, awesome_config *awesomeconf)
 372 {
 373     XCrossingEvent *ev = &e->xcrossing;
 374     int screen;
 375
 376     for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 377         if((ev->window == RootWindow(e->xany.display, screen)) && !ev->same_screen)
 378             focus(e->xany.display, &dc[screen], NULL, ev->same_screen, &awesomeconf[screen]);
 379 }
 380
 381 void
 382 handle_event_mappingnotify(XEvent * e, awesome_config *awesomeconf)
 383 {
 384     XMappingEvent *ev = &e->xmapping;
 385     int screen;
 386
 387     XRefreshKeyboardMapping(ev);
 388     if(ev->request == MappingKeyboard)
 389         for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 390             grabkeys(e->xany.display, screen, &awesomeconf[screen]);
 391 }
 392
 393 void
 394 handle_event_maprequest(XEvent * e, awesome_config *awesomeconf)
 395 {
 396     static XWindowAttributes wa;
 397     XMapRequestEvent *ev = &e->xmaprequest;
 398     int screen;
 399
 400     if(!XGetWindowAttributes(e->xany.display, ev->window, &wa))
 401         return;
 402     if(wa.override_redirect)
 403         return;
 404     if(!getclient(ev->window))
 405     {
 406         for(screen = 0; wa.screen != ScreenOfDisplay(e->xany.display, screen); screen++);
 407         if(screen == 0)
 408             screen = get_screen_bycoord(e->xany.display, wa.x, wa.y);
 409         manage(e->xany.display, &dc[screen], ev->window, &wa, &awesomeconf[screen]);
 410     }
 411 }
 412
 413 void
 414 handle_event_propertynotify(XEvent * e, awesome_config *awesomeconf)
 415 {
 416     Client *c;
 417     Window trans;
 418     XPropertyEvent *ev = &e->xproperty;
 419
 420     if(ev->state == PropertyDelete)
 421         return;                 /* ignore */
 422     if((c = getclient(ev->window)))
 423     {
 424         switch (ev->atom)
 425         {
 426         case XA_WM_TRANSIENT_FOR:
 427             XGetTransientForHint(e->xany.display, c->win, &trans);
 428             if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
 429                 arrange(e->xany.display, &dc[c->screen], &awesomeconf[c->screen]);
 430             break;
 431         case XA_WM_NORMAL_HINTS:
 432             updatesizehints(c);
 433             break;
 434         }
 435         if(ev->atom == XA_WM_NAME || ev->atom == XInternAtom(c->display, "_NET_WM_NAME", False))
 436         {
 437             updatetitle(c);
 438             if(c == sel)
 439                 drawstatusbar(e->xany.display, &dc[c->screen], &awesomeconf[c->screen]);
 440         }
 441     }
 442 }
 443
 444 void
 445 handle_event_unmapnotify(XEvent * e, awesome_config *awesomeconf)
 446 {
 447     Client *c;
 448     XUnmapEvent *ev = &e->xunmap;
 449
 450     if((c = getclient(ev->window))
 451        && ev->event == RootWindow(e->xany.display, c->screen) && (ev->send_event || !c->unmapped))
 452         unmanage(c, &dc[c->screen], WithdrawnState, &awesomeconf[c->screen]);
 453 }
 454
 455 void
 456 handle_event_shape(XEvent * e,
 457                    awesome_config *awesomeconf __attribute__ ((unused)))
 458 {
 459     XShapeEvent *ev = (XShapeEvent *) e;
 460     Client *c = getclient(ev->window);
 461
 462     if(c)
 463         set_shape(c);
 464 }
 465
 466 void
 467 handle_event_randr_screen_change_notify(XEvent *e,
 468                                         awesome_config *awesomeconf __attribute__ ((unused)))
 469 {
 470     XRRUpdateConfiguration(e);
 471 }
 472
 473 void
 474 grabkeys(Display *disp, int screen, awesome_config *awesomeconf)
 475 {
 476     int i;
 477     KeyCode code;
 478
 479     XUngrabKey(disp, AnyKey, AnyModifier, RootWindow(disp, screen));
 480     for(i = 0; i < awesomeconf->nkeys; i++)
 481     {
 482         if((code = XKeysymToKeycode(disp, awesomeconf->keys[i].keysym)) == NoSymbol)
 483             continue;
 484         XGrabKey(disp, code, awesomeconf->keys[i].mod, RootWindow(disp, screen), True, GrabModeAsync, GrabModeAsync);
 485         XGrabKey(disp, code, awesomeconf->keys[i].mod | LockMask, RootWindow(disp, screen), True, GrabModeAsync, GrabModeAsync);
 486         XGrabKey(disp, code, awesomeconf->keys[i].mod | awesomeconf->numlockmask, RootWindow(disp, screen), True, GrabModeAsync, GrabModeAsync);
 487         XGrabKey(disp, code, awesomeconf->keys[i].mod | awesomeconf->numlockmask | LockMask, RootWindow(disp, screen), True,
 488                  GrabModeAsync, GrabModeAsync);
 489     }
 490 }