1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
3 obt/xevent.c for the Openbox window manager
4 Copyright (c) 2007 Dana Jansens
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.
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.
16 See the COPYING file for a copy of the GNU General Public License.
19 #include "obt/xevent.h"
20 #include "obt/mainloop.h"
23 typedef struct _ObtXEventBinding ObtXEventBinding;
25 struct _ObtXEventHandler
30 /* An array of hash tables where the key is the window, and the value is
31 the ObtXEventBinding */
32 GHashTable **bindings;
33 gint num_event_types; /* the length of the bindings array */
36 struct _ObtXEventBinding
39 ObtXEventCallback func;
43 static void xevent_handler(const XEvent *e, gpointer data);
44 static guint window_hash(Window *w) { return *w; }
45 static gboolean window_comp(Window *w1, Window *w2) { return *w1 == *w2; }
46 static void binding_free(gpointer b);
48 ObtXEventHandler* xevent_new(void)
52 h = g_slice_new0(ObtXEventHandler);
58 void xevent_ref(ObtXEventHandler *h)
63 void xevent_unref(ObtXEventHandler *h)
65 if (h && --h->ref == 0) {
69 obt_main_loop_x_remove(h->loop, xevent_handler);
70 for (i = 0; i < h->num_event_types; ++i)
71 g_hash_table_destroy(h->bindings[i]);
74 g_slice_free(ObtXEventHandler, h);
78 void xevent_register(ObtXEventHandler *h, ObtMainLoop *loop)
81 obt_main_loop_x_add(loop, xevent_handler, h, NULL);
84 void xevent_set_handler(ObtXEventHandler *h, gint type, Window win,
85 ObtXEventCallback func, gpointer data)
91 /* make sure we have a spot for the event */
92 if (type + 1 < h->num_event_types) {
94 h->bindings = g_renew(GHashTable*, h->bindings, type + 1);
95 for (i = h->num_event_types; i < type + 1; ++i)
96 h->bindings[i] = g_hash_table_new_full((GHashFunc)window_hash,
97 (GEqualFunc)window_comp,
99 h->num_event_types = type + 1;
102 b = g_slice_new(ObtXEventBinding);
106 g_hash_table_replace(h->bindings[type], &b->win, b);
109 static void binding_free(gpointer b)
111 g_slice_free(ObtXEventBinding, b);
114 void xevent_remove_handler(ObtXEventHandler *h, gint type, Window win)
116 g_assert(type < h->num_event_types);
119 g_hash_table_remove(h->bindings[type], &win);
122 static void xevent_handler(const XEvent *e, gpointer data)
129 if (e->type < h->num_event_types) {
130 const gint all = OBT_XEVENT_ALL_WINDOWS;
131 /* run the all_windows handler first */
132 b = g_hash_table_lookup(h->bindings[e->xany.type], &all);
133 if (b) b->func(e, b->data);
134 /* then run the per-window handler */
135 b = g_hash_table_lookup(h->bindings[e->xany.type], &e->xany.window);
136 if (b) b->func(e, b->data);
139 g_message("Unhandled X Event type %d", e->xany.type);