/*
* calmwm - the calm window manager
*
* Copyright (c) 2004 Marius Aamodt Eriksen <marius@monkey.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* $OpenBSD: xevents.c,v 1.81 2013/05/20 21:32:00 okan Exp $
*/
/*
* NOTE:
* It is the responsibility of the caller to deal with memory
* management of the xevent's.
*/
#include <sys/param.h>
#include <sys/queue.h>
#include <err.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "calmwm.h"
static void xev_handle_maprequest(XEvent *);
static void xev_handle_unmapnotify(XEvent *);
static void xev_handle_destroynotify(XEvent *);
static void xev_handle_configurerequest(XEvent *);
static void xev_handle_propertynotify(XEvent *);
static void xev_handle_enternotify(XEvent *);
static void xev_handle_leavenotify(XEvent *);
static void xev_handle_buttonpress(XEvent *);
static void xev_handle_buttonrelease(XEvent *);
static void xev_handle_keypress(XEvent *);
static void xev_handle_keyrelease(XEvent *);
static void xev_handle_expose(XEvent *);
static void xev_handle_clientmessage(XEvent *);
static void xev_handle_randr(XEvent *);
static void xev_handle_mappingnotify(XEvent *);
void (*xev_handlers[LASTEvent])(XEvent *) = {
[MapRequest] = xev_handle_maprequest,
[UnmapNotify] = xev_handle_unmapnotify,
[ConfigureRequest] = xev_handle_configurerequest,
[PropertyNotify] = xev_handle_propertynotify,
[EnterNotify] = xev_handle_enternotify,
[LeaveNotify] = xev_handle_leavenotify,
[ButtonPress] = xev_handle_buttonpress,
[ButtonRelease] = xev_handle_buttonrelease,
[KeyPress] = xev_handle_keypress,
[KeyRelease] = xev_handle_keyrelease,
[Expose] = xev_handle_expose,
[DestroyNotify] = xev_handle_destroynotify,
[ClientMessage] = xev_handle_clientmessage,
[MappingNotify] = xev_handle_mappingnotify,
};
static KeySym modkeys[] = { XK_Alt_L, XK_Alt_R, XK_Super_L, XK_Super_R,
XK_Control_L, XK_Control_R };
static void
xev_handle_maprequest(XEvent *ee)
{
XMapRequestEvent *e = &ee->xmaprequest;
struct client_ctx *cc = NULL, *old_cc;
XWindowAttributes xattr;
if ((old_cc = client_current()) != NULL)
client_ptrsave(old_cc);
if ((cc = client_find(e->window)) == NULL) {
XGetWindowAttributes(X_Dpy, e->window, &xattr);
cc = client_init(e->window, screen_fromroot(xattr.root), 1);
}
if ((cc->flags & CLIENT_IGNORE) == 0)
client_ptrwarp(cc);
}
static void
xev_handle_unmapnotify(XEvent *ee)
{
XUnmapEvent *e = &ee->xunmap;
XEvent ev;
struct client_ctx *cc;
/* XXX, we need a recursive locking wrapper around grab server */
XGrabServer(X_Dpy);
if ((cc = client_find(e->window)) != NULL) {
/*
* If it's going to die anyway, nuke it.
*
* Else, if it's a synthetic event delete state, since they
* want it to be withdrawn. ICCM recommends you withdraw on
* this even if we haven't alredy been told to iconify, to
* deal with legacy clients.
*/
if (XCheckTypedWindowEvent(X_Dpy, cc->win,
DestroyNotify, &ev) || e->send_event != 0) {
client_delete(cc);
} else
client_hide(cc);
}
XUngrabServer(X_Dpy);
}
static void
xev_handle_destroynotify(XEvent *ee)
{
XDestroyWindowEvent *e = &ee->xdestroywindow;
struct client_ctx *cc;
if ((cc = client_find(e->window)) != NULL)
client_delete(cc);
}
static void
xev_handle_configurerequest(XEvent *ee)
{
XConfigureRequestEvent *e = &ee->xconfigurerequest;
struct client_ctx *cc;
struct screen_ctx *sc;
XWindowChanges wc;
if ((cc = client_find(e->window)) != NULL) {
sc = cc->sc;
if (e->value_mask & CWWidth)
cc->geom.w = e->width;
if (e->value_mask & CWHeight)
cc->geom.h = e->height;
if (e->value_mask & CWX)
cc->geom.x = e->x;
if (e->value_mask & CWY)
cc->geom.y = e->y;
if (e->value_mask & CWBorderWidth)
wc.border_width = e->border_width;
if (cc->geom.x == 0 && cc->geom.w >= sc->view.w)
cc->geom.x -= cc->bwidth;
if (cc->geom.y == 0 && cc->geom.h >= sc->view.h)
cc->geom.y -= cc->bwidth;
wc.x = cc->geom.x;
wc.y = cc->geom.y;
wc.width = cc->geom.w;
wc.height = cc->geom.h;
wc.border_width = cc->bwidth;
XConfigureWindow(X_Dpy, cc->win, e->value_mask, &wc);
xu_configure(cc);
} else {
/* let it do what it wants, it'll be ours when we map it. */
wc.x = e->x;
wc.y = e->y;
wc.width = e->width;
wc.height = e->height;
wc.border_width = e->border_width;
wc.stack_mode = Above;
e->value_mask &= ~CWStackMode;
XConfigureWindow(X_Dpy, e->window, e->value_mask, &wc);
}
}
static void
xev_handle_propertynotify(XEvent *ee)
{
XPropertyEvent *e = &ee->xproperty;
struct screen_ctx *sc;
struct client_ctx *cc;
if ((cc = client_find(e->window)) != NULL) {
switch (e->atom) {
case XA_WM_NORMAL_HINTS:
client_getsizehints(cc);
break;
case XA_WM_NAME:
client_setname(cc);
break;
case XA_WM_TRANSIENT_FOR:
client_transient(cc);
break;
default:
/* do nothing */
break;
}
} else {
TAILQ_FOREACH(sc, &Screenq, entry) {
if (sc->rootwin == e->window) {
if (e->atom == ewmh[_NET_DESKTOP_NAMES].atom)
group_update_names(sc);
}
}
}
}
static void
xev_handle_enternotify(XEvent *ee)
{
XCrossingEvent *e = &ee->xcrossing;
struct client_ctx *cc;
if ((cc = client_find(e->window)) != NULL)
client_setactive(cc, 1);
}
static void
xev_handle_leavenotify(XEvent *ee)
{
client_leave(NULL);
}
/* We can split this into two event handlers. */
static void
xev_handle_buttonpress(XEvent *ee)
{
XButtonEvent *e = &ee->xbutton;
struct client_ctx *cc, fakecc;
struct screen_ctx *sc;
struct mousebinding *mb;
sc = screen_fromroot(e->root);
cc = client_find(e->window);
e->state &= ~IGNOREMODMASK;
TAILQ_FOREACH(mb, &Conf.mousebindingq, entry) {
if (e->button == mb->button && e->state == mb->modmask)
break;
}
if (mb == NULL)
return;
if (mb->context == MOUSEBIND_CTX_ROOT) {
if (e->window != sc->rootwin)
return;
cc = &fakecc;
cc->sc = screen_fromroot(e->window);
} else if (cc == NULL) /* (mb->context == MOUSEBIND_CTX_WIN */
return;
(*mb->callback)(cc, e);
}
static void
xev_handle_buttonrelease(XEvent *ee)
{
struct client_ctx *cc;
if ((cc = client_current()) != NULL)
group_sticky_toggle_exit(cc);
}
static void
xev_handle_keypress(XEvent *ee)
{
XKeyEvent *e = &ee->xkey;
struct client_ctx *cc = NULL, fakecc;
struct keybinding *kb;
KeySym keysym, skeysym;
u_int modshift;
keysym = XkbKeycodeToKeysym(X_Dpy, e->keycode, 0, 0);
skeysym = XkbKeycodeToKeysym(X_Dpy, e->keycode, 0, 1);
e->state &= ~IGNOREMODMASK;
TAILQ_FOREACH(kb, &Conf.keybindingq, entry) {
if (keysym != kb->keysym && skeysym == kb->keysym)
modshift = ShiftMask;
else
modshift = 0;
if ((kb->modmask | modshift) != e->state)
continue;
if ((kb->keycode != 0 && kb->keysym == NoSymbol &&
kb->keycode == e->keycode) || kb->keysym ==
(modshift == 0 ? keysym : skeysym))
break;
}
if (kb == NULL)
return;
if (kb->flags & KBFLAG_NEEDCLIENT) {
if (((cc = client_find(e->window)) == NULL) &&
(cc = client_current()) == NULL)
return;
} else {
cc = &fakecc;
cc->sc = screen_fromroot(e->window);
}
(*kb->callback)(cc, &kb->argument);
}
/*
* This is only used for the modifier suppression detection.
*/
static void
xev_handle_keyrelease(XEvent *ee)
{
XKeyEvent *e = &ee->xkey;
struct screen_ctx *sc;
struct client_ctx *cc;
KeySym keysym;
u_int i;
sc = screen_fromroot(e->root);
cc = client_current();
keysym = XkbKeycodeToKeysym(X_Dpy, e->keycode, 0, 0);
for (i = 0; i < nitems(modkeys); i++) {
if (keysym == modkeys[i]) {
client_cycle_leave(sc, cc);
break;
}
}
}
static void
xev_handle_clientmessage(XEvent *ee)
{
XClientMessageEvent *e = &ee->xclient;
struct client_ctx *cc, *old_cc;
if ((cc = client_find(e->window)) == NULL)
return;
if (e->message_type == cwmh[WM_CHANGE_STATE].atom &&
e->format == 32 && e->data.l[0] == IconicState)
client_hide(cc);
if (e->message_type == ewmh[_NET_CLOSE_WINDOW].atom)
client_send_delete(cc);
if (e->message_type == ewmh[_NET_ACTIVE_WINDOW].atom &&
e->format == 32) {
old_cc = client_current();
if (old_cc)
client_ptrsave(old_cc);
client_ptrwarp(cc);
}
}
static void
xev_handle_randr(XEvent *ee)
{
XRRScreenChangeNotifyEvent *rev = (XRRScreenChangeNotifyEvent *)ee;
struct screen_ctx *sc;
int i;
i = XRRRootToScreen(X_Dpy, rev->root);
TAILQ_FOREACH(sc, &Screenq, entry) {
if (sc->which == i) {
XRRUpdateConfiguration(ee);
screen_update_geometry(sc);
}
}
}
/*
* Called when the keymap has changed.
* Ungrab all keys, reload keymap and then regrab
*/
static void
xev_handle_mappingnotify(XEvent *ee)
{
XMappingEvent *e = &ee->xmapping;
struct keybinding *kb;
TAILQ_FOREACH(kb, &Conf.keybindingq, entry)
conf_ungrab(&Conf, kb);
XRefreshKeyboardMapping(e);
TAILQ_FOREACH(kb, &Conf.keybindingq, entry)
conf_grab(&Conf, kb);
}
static void
xev_handle_expose(XEvent *ee)
{
XExposeEvent *e = &ee->xexpose;
struct client_ctx *cc;
if ((cc = client_find(e->window)) != NULL && e->count == 0)
client_draw_border(cc);
}
volatile sig_atomic_t xev_quit = 0;
void
xev_loop(void)
{
XEvent e;
while (xev_quit == 0) {
XNextEvent(X_Dpy, &e);
if (e.type - Randr_ev == RRScreenChangeNotify)
xev_handle_randr(&e);
else if (e.type < LASTEvent && xev_handlers[e.type] != NULL)
(*xev_handlers[e.type])(&e);
}
}
