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