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.nscreens; screen++)
  74         for(statusbar = globalconf.screens[screen].statusbar; statusbar; statusbar = statusbar->next)
  75             if(statusbar->window == ev->window || statusbar->window == ev->subwindow)
  76                 switch(statusbar->position)
  77                 {
  78                   case Top:
  79                   case Bottom:
  80                     for(widget = statusbar->widgets; widget; widget = widget->next)
  81                         if(ev->x >= widget->area.x && ev->x < widget->area.x + widget->area.width
  82                            && ev->y >= widget->area.y && ev->y < widget->area.y + widget->area.height)
  83                         {
  84                             widget->button_press(widget, ev);
  85                             return;
  86                         }
  87                     break;
  88                   case Right:
  89                     for(widget = statusbar->widgets; widget; widget = widget->next)
  90                         if(ev->y >= widget->area.x && ev->y < widget->area.x + widget->area.width
  91                            && statusbar->height - ev->x >= widget->area.y
  92                            && statusbar->height - ev->x < widget->area.y + widget->area.height)
  93                         {
  94                             widget->button_press(widget, ev);
  95                             return;
  96                         }
  97                     break;
  98                  default:
  99                     for(widget = statusbar->widgets; widget; widget = widget->next)
 100                         if(statusbar->width - ev->y >= widget->area.x
 101                            && statusbar->width - ev->y < widget->area.x + widget->area.width
 102                            && ev->x >= widget->area.y && ev->x < widget->area.y + widget->area.height)
 103                         {
 104                             widget->button_press(widget, ev);
 105                             return;
 106                         }
 107                     break;
 108                 }
 109
 110     if((c = get_client_bywin(globalconf.clients, ev->window)))
 111     {
 112         focus(c, ev->same_screen, c->screen);
 113         if(CLEANMASK(ev->state) == NoSymbol
 114            && ev->button == Button1)
 115         {
 116             XAllowEvents(globalconf.display, ReplayPointer, CurrentTime);
 117             window_grabbuttons(get_phys_screen(c->screen), c->win, True, True);
 118         }
 119         else
 120             handle_mouse_button_press(c->screen, ev->button, ev->state, globalconf.buttons.client, NULL);
 121     }
 122     else
 123         for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 124             if(RootWindow(e->xany.display, screen) == ev->window
 125                && XQueryPointer(e->xany.display,
 126                                 ev->window, &wdummy,
 127                                 &wdummy, &x, &y, &i,
 128                                 &i, &udummy))
 129             {
 130                 screen = get_screen_bycoord(x, y);
 131                 handle_mouse_button_press(screen, ev->button, ev->state,
 132                                           globalconf.buttons.root, NULL);
 133                 return;
 134             }
 135 }
 136
 137 void
 138 handle_event_configurerequest(XEvent * e)
 139 {
 140     Client *c;
 141     XConfigureRequestEvent *ev = &e->xconfigurerequest;
 142     XWindowChanges wc;
 143     int old_screen;
 144     Area geometry;
 145
 146     if((c = get_client_bywin(globalconf.clients, ev->window)))
 147     {
 148         geometry = c->geometry;
 149
 150         if(ev->value_mask & CWX)
 151             geometry.x = ev->x;
 152         if(ev->value_mask & CWY)
 153             geometry.y = ev->y;
 154         if(ev->value_mask & CWWidth)
 155             geometry.width = ev->width;
 156         if(ev->value_mask & CWHeight)
 157             geometry.height = ev->height;
 158
 159         if(geometry.x != c->geometry.x || geometry.y != c->geometry.y
 160            || geometry.width != c->geometry.width || geometry.height != c->geometry.height)
 161         {
 162             old_screen = c->screen;
 163
 164             client_resize(c, geometry, False);
 165
 166             tag_client_with_rule(c, rule_matching_client(c));
 167
 168             if(!c->isfloating)
 169                 globalconf.screens[c->screen].need_arrange = True;
 170         }
 171         else
 172             window_configure(c->win, geometry, c->border);
 173     }
 174     else
 175     {
 176         wc.x = ev->x;
 177         wc.y = ev->y;
 178         wc.width = ev->width;
 179         wc.height = ev->height;
 180         wc.border_width = ev->border_width;
 181         wc.sibling = ev->above;
 182         wc.stack_mode = ev->detail;
 183         XConfigureWindow(e->xany.display, ev->window, ev->value_mask, &wc);
 184     }
 185 }
 186
 187 void
 188 handle_event_configurenotify(XEvent * e)
 189 {
 190     XConfigureEvent *ev = &e->xconfigure;
 191     int screen;
 192     Area area;
 193
 194     for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 195         if(ev->window == RootWindow(e->xany.display, screen)
 196            && (ev->width != DisplayWidth(e->xany.display, screen)
 197                || ev->height != DisplayHeight(e->xany.display, screen)))
 198         {
 199             DisplayWidth(e->xany.display, screen) = ev->width;
 200             DisplayHeight(e->xany.display, screen) = ev->height;
 201
 202             /* update statusbar */
 203             area = get_screen_area(screen, NULL, &globalconf.screens[screen].padding);
 204             globalconf.screens[screen].statusbar->width = area.width;
 205
 206             XResizeWindow(e->xany.display,
 207                           globalconf.screens[screen].statusbar->window,
 208                           globalconf.screens[screen].statusbar->width,
 209                           globalconf.screens[screen].statusbar->height);
 210
 211             widget_invalidate_cache(screen, WIDGET_CACHE_ALL);
 212             globalconf.screens[screen].need_arrange = True;
 213         }
 214 }
 215
 216 void
 217 handle_event_destroynotify(XEvent * e)
 218 {
 219     Client *c;
 220     XDestroyWindowEvent *ev = &e->xdestroywindow;
 221
 222     if((c = get_client_bywin(globalconf.clients, ev->window)))
 223         client_unmanage(c);
 224 }
 225
 226 void
 227 handle_event_enternotify(XEvent * e)
 228 {
 229     Client *c;
 230     XCrossingEvent *ev = &e->xcrossing;
 231     int screen;
 232     Tag **curtags;
 233
 234     if(ev->mode != NotifyNormal)
 235         return;
 236     if((c = get_client_bywin(globalconf.clients, ev->window)) && globalconf.screens[c->screen].sloppy_focus)
 237     {
 238         focus(c, ev->same_screen, c->screen);
 239         curtags = get_current_tags(c->screen);
 240         if (c->isfloating || curtags[0]->layout->arrange == layout_floating)
 241             window_grabbuttons(get_phys_screen(c->screen), c->win, True, False);
 242         p_delete(&curtags);
 243     }
 244     else
 245     {
 246         for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 247             if(ev->window == RootWindow(e->xany.display, screen))
 248                 focus(NULL, ev->same_screen, screen);
 249         if((c = globalconf.focus->client))
 250             window_grabbuttons(c->screen, c->win, False, False);
 251     }
 252 }
 253
 254 void
 255 handle_event_expose(XEvent *e)
 256 {
 257     XExposeEvent *ev = &e->xexpose;
 258     int screen;
 259     Statusbar *statusbar;
 260
 261     if(!ev->count)
 262         for(screen = 0; screen < globalconf.nscreens; screen++)
 263             for(statusbar = globalconf.screens[screen].statusbar; statusbar; statusbar = statusbar->next)
 264                 if(statusbar->window == ev->window)
 265                 {
 266                     statusbar_display(statusbar);
 267                     return;
 268                 }
 269 }
 270
 271 void
 272 handle_event_keypress(XEvent * e)
 273 {
 274     int screen, x, y, d;
 275     unsigned int m;
 276     KeySym keysym;
 277     XKeyEvent *ev = &e->xkey;
 278     Window dummy;
 279     Key *k;
 280
 281     keysym = XKeycodeToKeysym(e->xany.display, (KeyCode) ev->keycode, 0);
 282
 283     /* find the right screen for this event */
 284     for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 285         if(XQueryPointer(e->xany.display, RootWindow(e->xany.display, screen), &dummy, &dummy, &x, &y, &d, &d, &m))
 286         {
 287             /* if screen is 0, we are on first Zaphod screen or on the
 288              * only screen in Xinerama, so we can ask for a better screen
 289              * number with get_screen_bycoord: we'll get 0 in Zaphod mode
 290              * so it's the same, or maybe the real Xinerama screen */
 291             if(screen == 0)
 292                 screen = get_screen_bycoord(x, y);
 293             break;
 294         }
 295
 296     for(k = globalconf.keys; k; k = k->next)
 297         if(keysym == k->keysym && k->func
 298            && CLEANMASK(k->mod) == CLEANMASK(ev->state))
 299         {
 300             k->func(screen, k->arg);
 301             break;
 302         }
 303 }
 304
 305 void
 306 handle_event_leavenotify(XEvent * e)
 307 {
 308     XCrossingEvent *ev = &e->xcrossing;
 309     int screen;
 310
 311     for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 312         if((ev->window == RootWindow(e->xany.display, screen)) && !ev->same_screen)
 313             focus(NULL, ev->same_screen, screen);
 314 }
 315
 316 void
 317 handle_event_mappingnotify(XEvent *e)
 318 {
 319     XMappingEvent *ev = &e->xmapping;
 320     int screen;
 321
 322     XRefreshKeyboardMapping(ev);
 323     if(ev->request == MappingKeyboard)
 324         for(screen = 0; screen < ScreenCount(e->xany.display); screen++)
 325             grabkeys(get_phys_screen(screen));
 326 }
 327
 328 void
 329 handle_event_maprequest(XEvent *e)
 330 {
 331     static XWindowAttributes wa;
 332     XMapRequestEvent *ev = &e->xmaprequest;
 333     int screen, x, y, d;
 334     unsigned int m;
 335     Window dummy;
 336
 337     if(!XGetWindowAttributes(e->xany.display, ev->window, &wa))
 338         return;
 339     if(wa.override_redirect)
 340         return;
 341     if(!get_client_bywin(globalconf.clients, ev->window))
 342     {
 343         for(screen = 0; wa.screen != ScreenOfDisplay(e->xany.display, screen); screen++);
 344         if(screen == 0 && XQueryPointer(e->xany.display, RootWindow(e->xany.display, screen),
 345                                         &dummy, &dummy, &x, &y, &d, &d, &m))
 346             screen = get_screen_bycoord(x, y);
 347         client_manage(ev->window, &wa, screen);
 348     }
 349 }
 350
 351 void
 352 handle_event_propertynotify(XEvent * e)
 353 {
 354     Client *c;
 355     Window trans;
 356     XPropertyEvent *ev = &e->xproperty;
 357
 358     if(ev->state == PropertyDelete)
 359         return;                 /* ignore */
 360     if((c = get_client_bywin(globalconf.clients, ev->window)))
 361     {
 362         switch (ev->atom)
 363         {
 364           case XA_WM_TRANSIENT_FOR:
 365             XGetTransientForHint(e->xany.display, c->win, &trans);
 366             if(!c->isfloating
 367                && (c->isfloating = (get_client_bywin(globalconf.clients, trans) != NULL)))
 368                 globalconf.screens[c->screen].need_arrange = True;
 369             break;
 370           case XA_WM_NORMAL_HINTS:
 371             client_updatesizehints(c);
 372             break;
 373           case XA_WM_HINTS:
 374             client_updatewmhints(c);
 375             break;
 376         }
 377         if(ev->atom == XA_WM_NAME || ev->atom == XInternAtom(globalconf.display, "_NET_WM_NAME", False))
 378             client_updatetitle(c);
 379     }
 380 }
 381
 382 void
 383 handle_event_unmapnotify(XEvent * e)
 384 {
 385     Client *c;
 386     XUnmapEvent *ev = &e->xunmap;
 387
 388     if((c = get_client_bywin(globalconf.clients, ev->window))
 389        && ev->event == RootWindow(e->xany.display, get_phys_screen(c->screen))
 390        && ev->send_event && window_getstate(c->win) == NormalState)
 391         client_unmanage(c);
 392 }
 393
 394 void
 395 handle_event_shape(XEvent * e)
 396 {
 397     XShapeEvent *ev = (XShapeEvent *) e;
 398     Client *c = get_client_bywin(globalconf.clients, ev->window);
 399
 400     if(c)
 401         window_setshape(get_phys_screen(c->screen), c->win);
 402 }
 403
 404 void
 405 handle_event_randr_screen_change_notify(XEvent *e)
 406 {
 407     XRRUpdateConfiguration(e);
 408     uicb_exec(0, globalconf.argv);
 409 }
 410
 411 void
 412 handle_event_clientmessage(XEvent *e)
 413 {
 414     ewmh_process_client_message(&e->xclient);
 415 }
 416
 417 void
 418 grabkeys(int phys_screen)
 419 {
 420     Key *k;
 421     KeyCode code;
 422
 423     XUngrabKey(globalconf.display, AnyKey, AnyModifier, RootWindow(globalconf.display, phys_screen));
 424     for(k = globalconf.keys; k; k = k->next)
 425     {
 426         if((code = XKeysymToKeycode(globalconf.display, k->keysym)) == NoSymbol)
 427             continue;
 428         XGrabKey(globalconf.display, code, k->mod, RootWindow(globalconf.display, phys_screen), True, GrabModeAsync, GrabModeAsync);
 429         XGrabKey(globalconf.display, code, k->mod | LockMask, RootWindow(globalconf.display, phys_screen), True, GrabModeAsync, GrabModeAsync);
 430         XGrabKey(globalconf.display, code, k->mod | globalconf.numlockmask, RootWindow(globalconf.display, phys_screen), True, GrabModeAsync, GrabModeAsync);
 431         XGrabKey(globalconf.display, code, k->mod | globalconf.numlockmask | LockMask, RootWindow(globalconf.display, phys_screen), True, GrabModeAsync, GrabModeAsync);
 432     }
 433 }
 434 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80