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