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
);