dont ungrab/regrab when the position in the chain didnt move
[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) 2006        Mikael Magnusson
5    Copyright (c) 2003-2007   Dana Jansens
6
7    This program is free software; you can redistribute it and/or modify
8    it under the terms of the GNU General Public License as published by
9    the Free Software Foundation; either version 2 of the License, or
10    (at your option) any later version.
11
12    This program is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15    GNU General Public License for more details.
16
17    See the COPYING file for a copy of the GNU General Public License.
18 */
19
20 #include "mainloop.h"
21 #include "focus.h"
22 #include "screen.h"
23 #include "frame.h"
24 #include "openbox.h"
25 #include "event.h"
26 #include "grab.h"
27 #include "client.h"
28 #include "action.h"
29 #include "prop.h"
30 #include "menuframe.h"
31 #include "config.h"
32 #include "keytree.h"
33 #include "keyboard.h"
34 #include "translate.h"
35 #include "moveresize.h"
36 #include "popup.h"
37 #include "gettext.h"
38
39 #include <glib.h>
40
41 typedef struct {
42     gboolean active;
43     guint state;
44     ObClient *client;
45     ObAction *action;
46 } ObInteractiveState;
47
48 KeyBindingTree *keyboard_firstnode = NULL;
49 static ObPopup *popup = NULL;
50 static ObInteractiveState istate;
51 static KeyBindingTree *curpos;
52
53 static void grab_keys(gboolean grab)
54 {
55     KeyBindingTree *p;
56
57     ungrab_all_keys(RootWindow(ob_display, ob_screen));
58
59     if (grab) {
60         p = curpos ? curpos->first_child : keyboard_firstnode;
61         while (p) {
62             grab_key(p->key, p->state, RootWindow(ob_display, ob_screen),
63                      GrabModeAsync);
64             p = p->next_sibling;
65         }
66         if (curpos)
67             grab_key(config_keyboard_reset_keycode,
68                      config_keyboard_reset_state,
69                      RootWindow(ob_display, ob_screen), GrabModeAsync);
70     }
71 }
72
73 static gboolean chain_timeout(gpointer data)
74 {
75     keyboard_reset_chains(0);
76     return FALSE; /* don't repeat */
77 }
78
79 static void set_curpos(KeyBindingTree *newpos)
80 {
81     if (curpose != newpos) {
82         grab_keys(FALSE);
83         curpos = newpos;
84         grab_keys(TRUE);
85     }
86
87     if (curpos != NULL) {
88         gchar *text = NULL;
89         GList *it;
90
91         for (it = curpos->keylist; it; it = g_list_next(it)) {
92             gchar *oldtext = text;
93             if (text == NULL)
94                 text = g_strdup(it->data);
95             else
96                 text = g_strconcat(text, " - ", it->data, NULL);
97             g_free(oldtext);
98         }
99
100         popup_position(popup, NorthWestGravity, 10, 10);
101         /* 1 second delay for the popup to show */
102         popup_delay_show(popup, G_USEC_PER_SEC, text);
103         g_free(text);
104     } else {
105         popup_hide(popup);
106     }
107 }
108
109 void keyboard_reset_chains(gint break_chroots)
110 {
111     KeyBindingTree *p;
112
113     for (p = curpos; p; p = p->parent) {
114         if (p->chroot) {
115             if (break_chroots == 0) break; /* stop here */
116             if (break_chroots > 0)
117                 --break_chroots;
118         }
119     }
120     set_curpos(p);
121 }
122
123 void keyboard_unbind_all()
124 {
125     tree_destroy(keyboard_firstnode);
126     keyboard_firstnode = NULL;
127 }
128
129 void keyboard_chroot(GList *keylist)
130 {
131     /* try do it in the existing tree. if we can't that means it is an empty
132        chroot binding. so add it to the tree then. */
133     if (!tree_chroot(keyboard_firstnode, keylist)) {
134         KeyBindingTree *tree;
135         if (!(tree = tree_build(keylist)))
136             return;
137         tree_chroot(tree, keylist);
138         tree_assimilate(tree);
139     }
140 }
141
142 gboolean keyboard_bind(GList *keylist, ObAction *action)
143 {
144     KeyBindingTree *tree, *t;
145     gboolean conflict;
146     gboolean mods = TRUE;
147
148     g_assert(keylist != NULL);
149     g_assert(action != NULL);
150
151     if (!(tree = tree_build(keylist)))
152         return FALSE;
153
154     if ((t = tree_find(tree, &conflict)) != NULL) {
155         /* already bound to something, use the existing tree */
156         tree_destroy(tree);
157         tree = NULL;
158     } else
159         t = tree;
160
161     if (conflict) {
162         g_message(_("Conflict with key binding in config file"));
163         tree_destroy(tree);
164         return FALSE;
165     }
166
167     /* find if every key in this chain has modifiers, and also find the
168        bottom node of the tree */
169     while (t->first_child) {
170         if (!t->state)
171             mods = FALSE;
172         t = t->first_child;
173     }
174
175     /* when there are no modifiers in the binding, then the action cannot
176        be interactive */
177     if (!mods && action->data.any.interactive) {
178         action->data.any.interactive = FALSE;
179         action->data.inter.final = TRUE;
180     }
181
182     /* set the action */
183     t->actions = g_slist_append(t->actions, action);
184     /* assimilate this built tree into the main tree. assimilation
185        destroys/uses the tree */
186     if (tree) tree_assimilate(tree);
187
188     return TRUE;
189 }
190
191 static void keyboard_interactive_end(guint state, gboolean cancel, Time time,
192                                      gboolean ungrab)
193 {
194     GSList *alist;
195
196     g_assert(istate.active);
197
198     alist = g_slist_append(NULL, istate.action);
199     action_run_interactive(alist, istate.client, state, time, cancel, TRUE);
200     g_slist_free(alist);
201
202     istate.active = FALSE;
203
204     if (ungrab)
205         grab_keyboard(FALSE);
206 }
207
208 static void keyboard_interactive_end_client(ObClient *client, gpointer data)
209 {
210     if (istate.active && istate.client == client)
211         istate.client = NULL;
212 }
213
214 gboolean keyboard_interactive_grab(guint state, ObClient *client,
215                                    ObAction *action)
216 {
217     g_assert(action->data.any.interactive);
218
219     if (!istate.active) {
220         if (!grab_keyboard(TRUE))
221             return FALSE;
222     } else if (action->func != istate.action->func) {
223         keyboard_interactive_end(state, FALSE, action->data.any.time, FALSE);
224     }
225
226     istate.active = TRUE;
227     istate.state = state;
228     istate.client = client;
229     istate.action = action;
230
231     return TRUE;
232 }
233
234 gboolean keyboard_process_interactive_grab(const XEvent *e, ObClient **client)
235 {
236     gboolean handled = FALSE;
237     gboolean done = FALSE;
238     gboolean cancel = FALSE;
239
240     if (istate.active) {
241         if ((e->type == KeyRelease && !(istate.state & e->xkey.state))) {
242             done = TRUE;
243             handled = TRUE;
244         } else if (e->type == KeyPress) {
245             /*if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN))
246               done = TRUE;
247               else */if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE)) {
248                   cancel = done = TRUE;
249                   handled = TRUE;
250               }
251         } else if (e->type == ButtonPress) {
252             cancel = FALSE;
253             done = TRUE;
254             handled = FALSE;
255         }
256
257         if (done)
258             keyboard_interactive_end(e->xkey.state, cancel, e->xkey.time,TRUE);
259
260         if (handled)
261             *client = istate.client;
262     }
263
264     return handled;
265 }
266
267 void keyboard_event(ObClient *client, const XEvent *e)
268 {
269     KeyBindingTree *p;
270
271     g_assert(e->type == KeyPress);
272
273     if (e->xkey.keycode == config_keyboard_reset_keycode &&
274         e->xkey.state == config_keyboard_reset_state)
275     {
276         ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
277         keyboard_reset_chains(-1);
278         return;
279     }
280
281     if (curpos == NULL)
282         p = keyboard_firstnode;
283     else
284         p = curpos->first_child;
285     while (p) {
286         if (p->key == e->xkey.keycode &&
287             p->state == e->xkey.state)
288         {
289             /* if we hit a key binding, then close any open menus and run it */
290             if (menu_frame_visible)
291                 menu_frame_hide_all();
292
293             if (p->first_child != NULL) { /* part of a chain */
294                 ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
295                 /* 3 second timeout for chains */
296                 ob_main_loop_timeout_add(ob_main_loop, 3 * G_USEC_PER_SEC,
297                                          chain_timeout, NULL,
298                                          g_direct_equal, NULL);
299                 set_curpos(p);
300             } else if (p->chroot)         /* an empty chroot */
301                 set_curpos(p);
302             else {
303                 keyboard_reset_chains(0);
304
305                 action_run_key(p->actions, client, e->xkey.state,
306                                e->xkey.x_root, e->xkey.y_root,
307                                e->xkey.time);
308             }
309             break;
310         }
311         p = p->next_sibling;
312     }
313 }
314
315 gboolean keyboard_interactively_grabbed()
316 {
317     return istate.active;
318 }
319
320 void keyboard_startup(gboolean reconfig)
321 {
322     grab_keys(TRUE);
323     popup = popup_new(FALSE);
324
325     if (!reconfig)
326         client_add_destructor(keyboard_interactive_end_client, NULL);
327 }
328
329 void keyboard_shutdown(gboolean reconfig)
330 {
331     if (!reconfig)
332         client_remove_destructor(keyboard_interactive_end_client);
333
334     if (istate.active)
335         keyboard_interactive_end(0, TRUE, 0, TRUE);
336
337     ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
338
339     keyboard_unbind_all();
340     set_curpos(NULL);
341
342     popup_free(popup);
343     popup = NULL;
344 }
345