event.c

   1 /*
   2  * event.c - event handlers
   3  *
   4  * Copyright © 2007-2008 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 "tag.h"
  31 #include "statusbar.h"
  32 #include "util.h"
  33 #include "window.h"
  34 #include "mouse.h"
  35 #include "ewmh.h"
  36 #include "client.h"
  37 #include "layouts/tile.h"
  38 #include "layouts/floating.h"
  39
  40
  41 extern AwesomeConf globalconf;
  42
  43 static void
  44 handle_mouse_button_press(int screen, unsigned int button, unsigned int state,
  45                           Button *buttons, char *arg)
  46 {
  47     Button *b;
  48
  49     for(b = buttons; b; b = b->next)
  50         if(button == b->button && CLEANMASK(state) == b->mod && b->func)
  51         {
  52             if(arg)
  53                 b->func(screen, arg);
  54             else
  55                 b->func(screen, b->arg);
  56             return;
  57         }
  58 }
  59
  60 void
  61 handle_event_buttonpress(XEvent *e)
  62 {
  63     int i, screen, x = 0, y = 0;
  64     unsigned int udummy;
  65     Client *c;
  66     Window wdummy;
  67     Widget *widget;
  68     Statusbar *statusbar;
  69     XButtonPressedEvent *ev = &e->xbutton;
  70
  71     for(screen = 0; screen < get_screen_count(); screen++)
  72         for(statusbar = globalconf.screens[screen].statusbar; statusbar; statusbar = statusbar->next)
  73             if(statusbar->window == ev->window)
  74                 switch(statusbar->position)
  75                 {
  76                   case Top:
  77                   case Bottom:
  78                     for(widget = statusbar->widgets; widget; widget = widget->next)
  79                         if(ev->x >= widget->area.x && ev->x <= widget->area.x + widget->area.width)
  80                         {
  81                             widget->button_press(widget, ev);
  82                             return;
  83                         }
  84                     break;
  85                   case Right:
  86                     for(widget = statusbar->widgets; widget; widget = widget->next)
  87                         if(ev->y >= widget->area.x && ev->y <= widget->area.x + widget->area.width)
  88                         {
  89                             widget->button_press(widget, ev);
  90                             return;
  91                         }
  92                     break;
  93                  default:
  94                     for(widget = statusbar->widgets; widget; widget = widget->next)
  95                         if(statusbar->width - ev->y >= widget->area.x
  96                            && statusbar->width - ev->y <= widget->area.x + widget->area.width)
  97                         {
  98                             widget->button_press(widget, ev);
  99                             return;
 100                         }
 101                     break;
 102                 }
 103
 104     if((c = get_client_bywin(globalconf.clients, ev->window)))
 105     {
 106         focus(c, ev->same_screen, c->screen);
 107         if(CLEANMASK(ev->state) == NoSymbol
 108            && ev->button == Button1)
 109         {
 110             restack(c->screen);
 111             XAllowEvents(globalconf.display, ReplayPointer, CurrentTime);
 112             window_grabbuttons(get_phys_screen(c->screen), c->win, True, True);
 113         }
 114         else
 115             handle_mouse_button_press(c->screen, ev->button, ev->state, globalconf.buttons.client, NULL);
 116     }
 117     else
 118         for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 119             if(RootWindow(e->xany.display, screen) == ev->window
 120                && XQueryPointer(e->xany.display,
 121                                 ev->window, &wdummy,
 122                                 &wdummy, &x, &y, &i,
 123                                 &i, &udummy))
 124             {
 125                 screen = get_screen_bycoord(x, y);
 126                 handle_mouse_button_press(screen, ev->button, ev->state,
 127                                           globalconf.buttons.root, NULL);
 128                 return;
 129             }
 130 }
 131
 132 void
 133 handle_event_configurerequest(XEvent * e)
 134 {
 135     Client *c;
 136     XConfigureRequestEvent *ev = &e->xconfigurerequest;
 137     XWindowChanges wc;
 138     int old_screen;
 139
 140     if((c = get_client_bywin(globalconf.clients, ev->window)))
 141     {
 142         if(c->isfixed)
 143         {
 144             if(ev->value_mask & CWX)
 145                 c->rx = c->x = ev->x - c->border;
 146             if(ev->value_mask & CWY)
 147                 c->ry = c->y = ev->y - c->border;
 148             if(ev->value_mask & CWWidth)
 149                 c->rw = c->w = ev->width;
 150             if(ev->value_mask & CWHeight)
 151                 c->rh = c->h = ev->height;
 152             if((ev->value_mask & (CWX | CWY)) && !(ev->value_mask & (CWWidth | CWHeight)))
 153                 window_configure(c->win, c->x, c->y, c->w, c->h, c->border);
 154             /* recompute screen */
 155             old_screen = c->screen;
 156             c->screen = get_screen_bycoord(c->x, c->y);
 157             if(old_screen != c->screen)
 158             {
 159                 move_client_to_screen(c, c->screen, False);
 160                 statusbar_draw_all(old_screen);
 161                 statusbar_draw_all(c->screen);
 162             }
 163             tag_client_with_rules(c);
 164             XMoveResizeWindow(e->xany.display, c->win, c->rx, c->ry, c->rw, c->rh);
 165             arrange(c->screen);
 166         }
 167         else
 168             window_configure(c->win, c->x, c->y, c->w, c->h, c->border);
 169     }
 170     else
 171     {
 172         wc.x = ev->x;
 173         wc.y = ev->y;
 174         wc.width = ev->width;
 175         wc.height = ev->height;
 176         wc.border_width = ev->border_width;
 177         wc.sibling = ev->above;
 178         wc.stack_mode = ev->detail;
 179         XConfigureWindow(e->xany.display, ev->window, ev->value_mask, &wc);
 180     }
 181     XSync(e->xany.display, False);
 182 }
 183
 184 void
 185 handle_event_configurenotify(XEvent * e)
 186 {
 187     XConfigureEvent *ev = &e->xconfigure;
 188     int screen;
 189     Area area;
 190
 191     for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 192         if(ev->window == RootWindow(e->xany.display, screen)
 193            && (ev->width != DisplayWidth(e->xany.display, screen)
 194                || ev->height != DisplayHeight(e->xany.display, screen)))
 195         {
 196             DisplayWidth(e->xany.display, screen) = ev->width;
 197             DisplayHeight(e->xany.display, screen) = ev->height;
 198
 199             /* update statusbar */
 200             area = get_screen_area(screen, NULL, &globalconf.screens[screen].padding);
 201             globalconf.screens[screen].statusbar->width = area.width;
 202
 203             XResizeWindow(e->xany.display,
 204                           globalconf.screens[screen].statusbar->window,
 205                           globalconf.screens[screen].statusbar->width,
 206                           globalconf.screens[screen].statusbar->height);
 207
 208             statusbar_draw_all(screen);
 209             arrange(screen);
 210         }
 211 }
 212
 213 void
 214 handle_event_destroynotify(XEvent * e)
 215 {
 216     Client *c;
 217     XDestroyWindowEvent *ev = &e->xdestroywindow;
 218
 219     if((c = get_client_bywin(globalconf.clients, ev->window)))
 220         client_unmanage(c, WithdrawnState);
 221 }
 222
 223 void
 224 handle_event_enternotify(XEvent * e)
 225 {
 226     Client *c;
 227     XCrossingEvent *ev = &e->xcrossing;
 228     int screen;
 229     Tag **curtags;
 230
 231     if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 232         return;
 233     if((c = get_client_bywin(globalconf.clients, ev->window)) && globalconf.screens[c->screen].sloppy_focus)
 234     {
 235         focus(c, ev->same_screen, c->screen);
 236         curtags = get_current_tags(c->screen);
 237         if (c->isfloating || curtags[0]->layout->arrange == layout_floating)
 238             window_grabbuttons(get_phys_screen(c->screen), c->win, True, False);
 239         p_delete(&curtags);
 240     }
 241     else
 242         for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 243             if(ev->window == RootWindow(e->xany.display, screen))
 244                 focus(NULL, True, screen);
 245 }
 246
 247 void
 248 handle_event_expose(XEvent *e)
 249 {
 250     XExposeEvent *ev = &e->xexpose;
 251     int screen;
 252     Statusbar *statusbar;
 253
 254     if(!ev->count)
 255         for(screen = 0; screen < get_screen_count(); screen++)
 256             for(statusbar = globalconf.screens[screen].statusbar; statusbar; statusbar = statusbar->next)
 257                 if(statusbar->window == ev->window)
 258                 {
 259                     statusbar_display(statusbar);
 260                     return;
 261                 }
 262 }
 263
 264 void
 265 handle_event_keypress(XEvent * e)
 266 {
 267     int screen, x, y, d;
 268     unsigned int m;
 269     KeySym keysym;
 270     XKeyEvent *ev = &e->xkey;
 271     Window dummy;
 272     Key *k;
 273
 274     keysym = XKeycodeToKeysym(e->xany.display, (KeyCode) ev->keycode, 0);
 275
 276     /* find the right screen for this event */
 277     for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 278         if(XQueryPointer(e->xany.display, RootWindow(e->xany.display, screen), &dummy, &dummy, &x, &y, &d, &d, &m))
 279         {
 280             /* if screen is 0, we are on first Zaphod screen or on the
 281              * only screen in Xinerama, so we can ask for a better screen
 282              * number with get_screen_bycoord: we'll get 0 in Zaphod mode
 283              * so it's the same, or maybe the real Xinerama screen */
 284             if(screen == 0)
 285                 screen = get_screen_bycoord(x, y);
 286             break;
 287         }
 288
 289     for(k = globalconf.keys; k; k = k->next)
 290         if(keysym == k->keysym && k->func
 291            && CLEANMASK(k->mod) == CLEANMASK(ev->state))
 292         {
 293             k->func(screen, k->arg);
 294             break;
 295         }
 296 }
 297
 298 void
 299 handle_event_leavenotify(XEvent * e)
 300 {
 301     XCrossingEvent *ev = &e->xcrossing;
 302     int screen;
 303
 304     for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 305         if((ev->window == RootWindow(e->xany.display, screen)) && !ev->same_screen)
 306             focus(NULL, ev->same_screen, screen);
 307 }
 308
 309 void
 310 handle_event_mappingnotify(XEvent * e)
 311 {
 312     XMappingEvent *ev = &e->xmapping;
 313     int screen;
 314
 315     XRefreshKeyboardMapping(ev);
 316     if(ev->request == MappingKeyboard)
 317         for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 318             grabkeys(get_phys_screen(screen));
 319 }
 320
 321 void
 322 handle_event_maprequest(XEvent * e)
 323 {
 324     static XWindowAttributes wa;
 325     XMapRequestEvent *ev = &e->xmaprequest;
 326     int screen, x, y, d;
 327     unsigned int m;
 328     Window dummy;
 329
 330     if(!XGetWindowAttributes(e->xany.display, ev->window, &wa))
 331         return;
 332     if(wa.override_redirect)
 333         return;
 334     if(!get_client_bywin(globalconf.clients, ev->window))
 335     {
 336         for(screen = 0; wa.screen != ScreenOfDisplay(e->xany.display, screen); screen++);
 337         if(screen == 0 && XQueryPointer(e->xany.display, RootWindow(e->xany.display, screen),
 338                                         &dummy, &dummy, &x, &y, &d, &d, &m))
 339             screen = get_screen_bycoord(x, y);
 340         client_manage(ev->window, &wa, screen);
 341     }
 342 }
 343
 344 void
 345 handle_event_propertynotify(XEvent * e)
 346 {
 347     Client *c;
 348     Window trans;
 349     XPropertyEvent *ev = &e->xproperty;
 350
 351     if(ev->state == PropertyDelete)
 352         return;                 /* ignore */
 353     if((c = get_client_bywin(globalconf.clients, ev->window)))
 354     {
 355         switch (ev->atom)
 356         {
 357           case XA_WM_TRANSIENT_FOR:
 358             XGetTransientForHint(e->xany.display, c->win, &trans);
 359             if(!c->isfloating && (c->isfloating = (get_client_bywin(globalconf.clients, trans) != NULL)))
 360                 arrange(c->screen);
 361             break;
 362           case XA_WM_NORMAL_HINTS:
 363             client_updatesizehints(c);
 364             break;
 365           case XA_WM_HINTS:
 366             client_updatewmhints(c);
 367             statusbar_draw_all(c->screen);
 368             break;
 369         }
 370         if(ev->atom == XA_WM_NAME || ev->atom == XInternAtom(globalconf.display, "_NET_WM_NAME", False))
 371         {
 372             client_updatetitle(c);
 373             if(c == globalconf.focus->client)
 374                 statusbar_draw_all(c->screen);
 375         }
 376     }
 377 }
 378
 379 void
 380 handle_event_unmapnotify(XEvent * e)
 381 {
 382     Client *c;
 383     XUnmapEvent *ev = &e->xunmap;
 384
 385     if((c = get_client_bywin(globalconf.clients, ev->window))
 386        && ev->event == RootWindow(e->xany.display, get_phys_screen(c->screen))
 387        && ev->send_event && window_getstate(c->win) == NormalState)
 388         client_unmanage(c, WithdrawnState);
 389 }
 390
 391 void
 392 handle_event_shape(XEvent * e)
 393 {
 394     XShapeEvent *ev = (XShapeEvent *) e;
 395     Client *c = get_client_bywin(globalconf.clients, ev->window);
 396
 397     if(c)
 398         window_setshape(get_phys_screen(c->screen), c->win);
 399 }
 400
 401 void
 402 handle_event_randr_screen_change_notify(XEvent *e)
 403 {
 404     XRRUpdateConfiguration(e);
 405 }
 406
 407 void
 408 handle_event_clientmessage(XEvent *e)
 409 {
 410     ewmh_process_client_message(&e->xclient);
 411 }
 412
 413 void
 414 grabkeys(int phys_screen)
 415 {
 416     Key *k;
 417     KeyCode code;
 418
 419     XUngrabKey(globalconf.display, AnyKey, AnyModifier, RootWindow(globalconf.display, phys_screen));
 420     for(k = globalconf.keys; k; k = k->next)
 421     {
 422         if((code = XKeysymToKeycode(globalconf.display, k->keysym)) == NoSymbol)
 423             continue;
 424         XGrabKey(globalconf.display, code, k->mod, RootWindow(globalconf.display, phys_screen), True, GrabModeAsync, GrabModeAsync);
 425         XGrabKey(globalconf.display, code, k->mod | LockMask, RootWindow(globalconf.display, phys_screen), True, GrabModeAsync, GrabModeAsync);
 426         XGrabKey(globalconf.display, code, k->mod | globalconf.numlockmask, RootWindow(globalconf.display, phys_screen), True, GrabModeAsync, GrabModeAsync);
 427         XGrabKey(globalconf.display, code, k->mod | globalconf.numlockmask | LockMask, RootWindow(globalconf.display, phys_screen), True, GrabModeAsync, GrabModeAsync);
 428     }
 429 }
 430 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80