did anyone use this?
[mikachu/openbox.git] / openbox / keyboard.c
1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
2
3    keyboard.c for the Openbox window manager
4    Copyright (c) 2003        Ben Jansens
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    See the COPYING file for a copy of the GNU General Public License.
17 */
18
19 #include "mainloop.h"
20 #include "focus.h"
21 #include "screen.h"
22 #include "frame.h"
23 #include "openbox.h"
24 #include "event.h"
25 #include "grab.h"
26 #include "client.h"
27 #include "action.h"
28 #include "prop.h"
29 #include "config.h"
30 #include "keytree.h"
31 #include "keyboard.h"
32 #include "translate.h"
33 #include "moveresize.h"
34
35 #include <glib.h>
36
37 KeyBindingTree *keyboard_firstnode;
38
39 typedef struct {
40     guint state;
41     ObClient *client;
42     GSList *actions;
43     ObFrameContext context;
44 } ObInteractiveState;
45
46 static GSList *interactive_states;
47
48 static KeyBindingTree *curpos;
49
50 static void grab_for_window(Window win, gboolean grab)
51 {
52     KeyBindingTree *p;
53
54     ungrab_all_keys(win);
55
56     if (grab) {
57         p = curpos ? curpos->first_child : keyboard_firstnode;
58         while (p) {
59             grab_key(p->key, p->state, win, GrabModeAsync);
60             p = p->next_sibling;
61         }
62         if (curpos)
63             grab_key(config_keyboard_reset_keycode,
64                      config_keyboard_reset_state,
65                      win, GrabModeAsync);
66     }
67 }
68
69 void keyboard_grab_for_client(ObClient *c, gboolean grab)
70 {
71     grab_for_window(c->window, grab);
72 }
73
74 static void grab_keys(gboolean grab)
75 {
76     GList *it;
77
78     grab_for_window(screen_support_win, grab);
79     for (it = client_list; it; it = g_list_next(it))
80         grab_for_window(((ObClient*)it->data)->window, grab);
81 }
82
83 static gboolean chain_timeout(gpointer data)
84 {
85     keyboard_reset_chains();
86
87     return FALSE; /* don't repeat */
88 }
89
90 void keyboard_reset_chains()
91 {
92     ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
93
94     if (curpos) {
95         grab_keys(FALSE);
96         curpos = NULL;
97         grab_keys(TRUE);
98     }
99 }
100
101 void keyboard_unbind_all()
102 {
103     tree_destroy(keyboard_firstnode);
104     keyboard_firstnode = NULL;
105     grab_keys(FALSE);
106     curpos = NULL;
107 }
108
109 gboolean keyboard_bind(GList *keylist, ObAction *action)
110 {
111     KeyBindingTree *tree, *t;
112     gboolean conflict;
113     gboolean mods = TRUE;
114
115     g_assert(keylist != NULL);
116     g_assert(action != NULL);
117
118     if (!(tree = tree_build(keylist)))
119         return FALSE;
120
121     if ((t = tree_find(tree, &conflict)) != NULL) {
122         /* already bound to something, use the existing tree */
123         tree_destroy(tree);
124         tree = NULL;
125     } else
126         t = tree;
127
128     if (conflict) {
129         g_warning("conflict with binding");
130         tree_destroy(tree);
131         return FALSE;
132     }
133
134     /* find if every key in this chain has modifiers, and also find the
135        bottom node of the tree */
136     while (t->first_child) {
137         if (!t->state)
138             mods = FALSE;
139         t = t->first_child;
140     }
141
142     /* when there are no modifiers in the binding, then the action cannot
143        be interactive */
144     if (!mods && action->data.any.interactive) {
145         action->data.any.interactive = FALSE;
146         action->data.inter.final = TRUE;
147     }
148
149     /* set the action */
150     t->actions = g_slist_append(t->actions, action);
151     /* assimilate this built tree into the main tree. assimilation
152        destroys/uses the tree */
153     if (tree) tree_assimilate(tree);
154
155     return TRUE;
156 }
157
158 gboolean keyboard_interactive_grab(guint state, ObClient *client,
159                                    ObAction *action)
160 {
161     ObInteractiveState *s;
162
163     g_assert(action->data.any.interactive);
164
165     if (!interactive_states) {
166         if (!grab_keyboard(TRUE))
167             return FALSE;
168         if (!grab_pointer(TRUE, OB_CURSOR_NONE)) {
169             grab_keyboard(FALSE);
170             return FALSE;
171         }
172     }
173
174     s = g_new(ObInteractiveState, 1);
175
176     s->state = state;
177     s->client = client;
178     s->actions = g_slist_append(NULL, action);
179
180     interactive_states = g_slist_append(interactive_states, s);
181
182     return TRUE;
183 }
184
185 void keyboard_interactive_end(ObInteractiveState *s,
186                               guint state, gboolean cancel)
187 {
188     action_run_interactive(s->actions, s->client, state, cancel, TRUE);
189
190     g_slist_free(s->actions);
191     g_free(s);
192
193     interactive_states = g_slist_remove(interactive_states, s);
194
195     if (!interactive_states) {
196         grab_keyboard(FALSE);
197         grab_pointer(FALSE, OB_CURSOR_NONE);
198         keyboard_reset_chains();
199     }
200 }
201
202 void keyboard_interactive_end_client(ObClient *client, gpointer data)
203 {
204     GSList *it, *next;
205
206     for (it = interactive_states; it; it = next) {
207         ObInteractiveState *s = it->data;
208
209         next = g_slist_next(it);
210
211         if (s->client == client)
212             s->client = NULL;
213     }
214 }
215
216 gboolean keyboard_process_interactive_grab(const XEvent *e, ObClient **client)
217 {
218     GSList *it, *next;
219     gboolean handled = FALSE;
220     gboolean done = FALSE;
221     gboolean cancel = FALSE;
222
223     for (it = interactive_states; it; it = next) {
224         ObInteractiveState *s = it->data;
225
226         next = g_slist_next(it);
227         
228         if ((e->type == KeyRelease && 
229              !(s->state & e->xkey.state)))
230             done = TRUE;
231         else if (e->type == KeyPress) {
232             /*if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN))
233                 done = TRUE;
234             else */if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE))
235                 cancel = done = TRUE;
236         }
237         if (done) {
238             keyboard_interactive_end(s, e->xkey.state, cancel);
239
240             handled = TRUE;
241         } else
242             *client = s->client;
243     }
244
245     return handled;
246 }
247
248 void keyboard_event(ObClient *client, const XEvent *e)
249 {
250     KeyBindingTree *p;
251
252     g_assert(e->type == KeyPress);
253
254     if (e->xkey.keycode == config_keyboard_reset_keycode &&
255         e->xkey.state == config_keyboard_reset_state)
256     {
257         keyboard_reset_chains();
258         return;
259     }
260
261     if (curpos == NULL)
262         p = keyboard_firstnode;
263     else
264         p = curpos->first_child;
265     while (p) {
266         if (p->key == e->xkey.keycode &&
267             p->state == e->xkey.state)
268         {
269             if (p->first_child != NULL) { /* part of a chain */
270                 ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
271                 /* 5 second timeout for chains */
272                 ob_main_loop_timeout_add(ob_main_loop, 5 * G_USEC_PER_SEC,
273                                          chain_timeout, NULL, NULL);
274                 grab_keys(FALSE);
275                 curpos = p;
276                 grab_keys(TRUE);
277             } else {
278
279                 keyboard_reset_chains();
280
281                 action_run_key(p->actions, client, e->xkey.state,
282                                e->xkey.x_root, e->xkey.y_root);
283             }
284             break;
285         }
286         p = p->next_sibling;
287     }
288 }
289
290 void keyboard_startup(gboolean reconfig)
291 {
292     grab_keys(TRUE);
293
294     if (!reconfig)
295         client_add_destructor(keyboard_interactive_end_client, NULL);
296 }
297
298 void keyboard_shutdown(gboolean reconfig)
299 {
300     GSList *it;
301
302     if (!reconfig)
303         client_remove_destructor(keyboard_interactive_end_client);
304
305     for (it = interactive_states; it; it = g_slist_next(it))
306         g_free(it->data);
307     g_slist_free(interactive_states);
308     interactive_states = NULL;
309
310     ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
311
312     keyboard_unbind_all();
313 }
314