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async key grabs to avoid race conditions with the sync stuff. there are still possible rases (yay X) but they will be much harder to hit, i expect noone will ever hit them more than once/often enuogh to realise.

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This commit is contained in:
Dana Jansens 2003-05-22 18:14:22 +00:00
parent 64c9c16c3f
commit 1eef38ce75
1 changed files with 39 additions and 37 deletions
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68
plugins/keyboard/keyboard.c
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@ -5,6 +5,7 @@
#include "kernel/grab.h"
#include "kernel/action.h"
#include "kernel/parse.h"
#include "kernel/timer.h"
#include "tree.h"
#include "keyboard.h"
#include "keyparse.h"
@ -20,30 +21,37 @@ KeyBindingTree *firstnode = NULL;
static KeyBindingTree *curpos;
static guint reset_key, reset_state, button_return, button_escape;
static gboolean grabbed;
static Timer *chain_timer;
static void grab_keys(gboolean grab)
static void grab_keys()
{
if (!grab) {
KeyBindingTree *p;
ungrab_all_keys();
} else {
KeyBindingTree *p = firstnode;
p = curpos ? curpos->first_child : firstnode;
while (p) {
grab_key(p->key, p->state, GrabModeSync);
grab_key(p->key, p->state, GrabModeAsync);
p = p->next_sibling;
}
}
grab_key(reset_key, reset_state, GrabModeAsync);
}
static void reset_chains()
{
/* XXX kill timer */
if (chain_timer) {
timer_stop(chain_timer);
chain_timer = NULL;
}
if (curpos) {
curpos = NULL;
if (grabbed) {
grabbed = FALSE;
grab_keyboard(FALSE);
} else
XAllowEvents(ob_display, AsyncKeyboard, event_lasttime);
grab_keys();
}
}
static void chain_timeout(void *data)
{
reset_chains();
}
gboolean kbind(GList *keylist, Action *action)
@ -71,19 +79,12 @@ gboolean kbind(GList *keylist, Action *action)
return FALSE;
}
/* grab the server here to make sure no key presses go missed */
grab_server(TRUE);
grab_keys(FALSE);
/* set the action */
t->actions = g_slist_append(t->actions, action);
/* assimilate this built tree into the main tree. assimilation
destroys/uses the tree */
if (tree) tree_assimilate(tree);
grab_keys(TRUE);
grab_server(FALSE);
return TRUE;
}
@ -115,8 +116,8 @@ static void event(ObEvent *e, void *foo)
Action *act = it->data;
act->data.cycle.final = TRUE;
act->func(&act->data);
grab_keyboard(FALSE);
grabbed_key = NULL;
grab_keyboard(FALSE);
reset_chains();
return;
}
@ -140,14 +141,12 @@ static void event(ObEvent *e, void *foo)
if (p->key == e->data.x.e->xkey.keycode &&
p->state == e->data.x.e->xkey.state) {
if (p->first_child != NULL) { /* part of a chain */
/* XXX TIMER */
if (!grabbed) {
grab_keyboard(TRUE);
grabbed = TRUE;
XAllowEvents(ob_display, AsyncKeyboard,
event_lasttime);
}
if (chain_timer) timer_stop(chain_timer);
/* 5 second timeout for chains */
chain_timer = timer_start(5000*1000, chain_timeout,
NULL);
curpos = p;
grab_keys();
} else {
GSList *it;
for (it = p->actions; it; it = it->next) {
@ -164,8 +163,9 @@ static void event(ObEvent *e, void *foo)
if (act->func == action_cycle_windows &&
!grabbed_key) {
grab_keyboard(TRUE);
grabbed_key = p;
grab_keyboard(TRUE);
break;
}
}
}
@ -184,22 +184,24 @@ void plugin_startup()
guint i;
curpos = NULL;
grabbed = FALSE;
chain_timer = NULL;
dispatch_register(Event_X_KeyPress | Event_X_KeyRelease, (EventHandler)event, NULL);
dispatch_register(Event_X_KeyPress | Event_X_KeyRelease,
(EventHandler)event, NULL);
translate_key("C-g", &reset_state, &reset_key);
translate_key("Escape", &i, &button_escape);
translate_key("Return", &i, &button_return);
grab_keys();
}
void plugin_shutdown()
{
dispatch_register(0, (EventHandler)event, NULL);
grab_keys(FALSE);
tree_destroy(firstnode);
firstnode = NULL;
grab_keys(TRUE);
ungrab_all_keys();
}