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 "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 "actions.h"
  28 #include "menuframe.h"
  29 #include "config.h"
  30 #include "keytree.h"
  31 #include "keyboard.h"
  32 #include "translate.h"
  33 #include "moveresize.h"
  34 #include "popup.h"
  35 #include "gettext.h"
  36 #include "obt/keyboard.h"
  37
  38 #include <glib.h>
  39
  40 KeyBindingTree *keyboard_firstnode = NULL;
  41 static ObPopup *popup = NULL;
  42 static KeyBindingTree *curpos;
  43 static guint chain_timer = 0;
  44
  45 static void grab_keys(gboolean grab)
  46 {
  47     KeyBindingTree *p;
  48
  49     ungrab_all_keys(obt_root(ob_screen));
  50
  51     if (grab) {
  52         p = curpos ? curpos->first_child : keyboard_firstnode;
  53         while (p) {
  54             if (p->key)
  55                 grab_key(p->key, p->state, obt_root(ob_screen),
  56                          GrabModeAsync);
  57             p = p->next_sibling;
  58         }
  59         if (curpos)
  60             grab_key(config_keyboard_reset_keycode,
  61                      config_keyboard_reset_state,
  62                      obt_root(ob_screen), GrabModeAsync);
  63     }
  64 }
  65
  66 static gboolean chain_timeout(gpointer data)
  67 {
  68     keyboard_reset_chains(0);
  69     XFlush(obt_display);
  70     return FALSE; /* don't repeat */
  71 }
  72
  73 static void chain_done(gpointer data)
  74 {
  75     chain_timer = 0;
  76 }
  77
  78 static void set_curpos(KeyBindingTree *newpos)
  79 {
  80     if (curpos == newpos) return;
  81
  82     grab_keys(FALSE);
  83     curpos = newpos;
  84     grab_keys(TRUE);
  85
  86     if (curpos != NULL) {
  87         gchar *text = NULL;
  88         GList *it;
  89         const Rect *a;
  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         a = screen_physical_area_primary(FALSE);
 101         popup_position(popup, NorthWestGravity, a->x + 10, a->y + 10);
 102         /* 1 second delay for the popup to show */
 103         popup_delay_show(popup, 1000, text);
 104         g_free(text);
 105     } else {
 106         popup_hide(popup);
 107     }
 108 }
 109
 110 void keyboard_reset_chains(gint break_chroots)
 111 {
 112     KeyBindingTree *p;
 113
 114     for (p = curpos; p; p = p->parent) {
 115         if (p->chroot) {
 116             if (break_chroots == 0) break; /* stop here */
 117             if (break_chroots > 0)
 118                 --break_chroots;
 119         }
 120     }
 121     set_curpos(p);
 122 }
 123
 124 void keyboard_unbind_all(void)
 125 {
 126     tree_destroy(keyboard_firstnode);
 127     keyboard_firstnode = NULL;
 128 }
 129
 130 void keyboard_chroot(GList *keylist)
 131 {
 132     /* try do it in the existing tree. if we can't that means it is an empty
 133        chroot binding. so add it to the tree then. */
 134     if (!tree_chroot(keyboard_firstnode, keylist)) {
 135         KeyBindingTree *tree;
 136         if (!(tree = tree_build(keylist)))
 137             return;
 138         tree_chroot(tree, keylist);
 139         tree_assimilate(tree);
 140     }
 141 }
 142
 143 gboolean keyboard_bind(GList *keylist, ObActionsAct *action)
 144 {
 145     KeyBindingTree *tree, *t;
 146     gboolean conflict;
 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 the bottom node */
 168     for (; t->first_child; t = t->first_child);
 169
 170     /* set the action */
 171     t->actions = g_slist_append(t->actions, action);
 172     /* assimilate this built tree into the main tree. assimilation
 173        destroys/uses the tree */
 174     if (tree) tree_assimilate(tree);
 175
 176     return TRUE;
 177 }
 178
 179 #if 0
 180 gboolean keyboard_process_interactive_grab(const XEvent *e, ObClient **client)
 181 {
 182     gboolean handled = FALSE;
 183     gboolean done = FALSE;
 184     gboolean cancel = FALSE;
 185     guint mods;
 186
 187     mods = obt_keyboard_only_modmasks(ev->xkey.state);
 188
 189     if (istate.active) {
 190         if ((e->type == KeyRelease && !(istate.state & mods))) {
 191             done = TRUE;
 192             handled = TRUE;
 193         } else if (e->type == KeyPress) {
 194             /*if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN))
 195               done = TRUE;
 196               else */if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE)) {
 197                   cancel = done = TRUE;
 198                   handled = TRUE;
 199               }
 200         } else if (e->type == ButtonPress) {
 201             cancel = TRUE;
 202             done = TRUE;
 203             handled = FALSE;
 204         }
 205
 206         if (done)
 207             keyboard_interactive_end(e->xkey.state, cancel, e->xkey.time,TRUE);
 208
 209         if (handled)
 210             *client = istate.client;
 211     }
 212
 213     return handled;
 214 }
 215 #endif
 216
 217 gboolean keyboard_event(ObClient *client, const XEvent *e)
 218 {
 219     KeyBindingTree *p;
 220     gboolean used;
 221     guint mods;
 222
 223     if (e->type == KeyRelease) {
 224         grab_key_passive_count(-1);
 225         return FALSE;
 226     }
 227
 228     g_assert(e->type == KeyPress);
 229     grab_key_passive_count(1);
 230
 231     mods = obt_keyboard_only_modmasks(e->xkey.state);
 232
 233     if (e->xkey.keycode == config_keyboard_reset_keycode &&
 234         mods == config_keyboard_reset_state)
 235     {
 236         if (chain_timer) g_source_remove(chain_timer);
 237         keyboard_reset_chains(-1);
 238         return TRUE;
 239     }
 240
 241     used = FALSE;
 242     if (curpos == NULL)
 243         p = keyboard_firstnode;
 244     else
 245         p = curpos->first_child;
 246     while (p) {
 247         if (p->key == e->xkey.keycode && p->state == mods) {
 248             /* if we hit a key binding, then close any open menus and run it */
 249             if (menu_frame_visible)
 250                 menu_frame_hide_all();
 251
 252             if (p->first_child != NULL) { /* part of a chain */
 253                 if (chain_timer) g_source_remove(chain_timer);
 254                 /* 3 second timeout for chains */
 255                 chain_timer =
 256                     g_timeout_add_full(G_PRIORITY_DEFAULT,
 257                                        3000, chain_timeout, NULL,
 258                                        chain_done);
 259                 set_curpos(p);
 260             } else if (p->chroot)         /* an empty chroot */
 261                 set_curpos(p);
 262             else {
 263                 GSList *it;
 264
 265                 for (it = p->actions; it; it = g_slist_next(it))
 266                     if (actions_act_is_interactive(it->data)) break;
 267                 if (it == NULL) /* reset if the actions are not interactive */
 268                     keyboard_reset_chains(0);
 269
 270                 actions_run_acts(p->actions, OB_USER_ACTION_KEYBOARD_KEY,
 271                                  e->xkey.state, e->xkey.x_root, e->xkey.y_root,
 272                                  0, OB_FRAME_CONTEXT_NONE, client);
 273             }
 274             break;
 275             used = TRUE;
 276         }
 277         p = p->next_sibling;
 278     }
 279     return used;
 280 }
 281
 282 static void node_rebind(KeyBindingTree *node)
 283 {
 284     if (node->first_child) {
 285         /* find leaf nodes */
 286         node_rebind(node->first_child);
 287
 288         /* for internal nodes, add them to the tree if they
 289            are a chroot, but do this after adding their
 290            children */
 291         if (node->chroot)
 292             keyboard_chroot(node->keylist);
 293     }
 294     else {
 295         /* for leaf nodes, rebind each action assigned to it */
 296         while (node->actions) {
 297             /* add each action, and remove them from the original tree so
 298                they don't get free'd on us */
 299             keyboard_bind(node->keylist, node->actions->data);
 300             node->actions = g_slist_delete_link(node->actions, node->actions);
 301         }
 302
 303         if (node->chroot)
 304             keyboard_chroot(node->keylist);
 305     }
 306
 307     /* go through each sibling */
 308     if (node->next_sibling) node_rebind(node->next_sibling);
 309 }
 310
 311 void keyboard_rebind(void)
 312 {
 313     KeyBindingTree *old;
 314
 315     old = keyboard_firstnode;
 316     keyboard_firstnode = NULL;
 317     node_rebind(old);
 318
 319     tree_destroy(old);
 320     set_curpos(NULL);
 321     grab_keys(TRUE);
 322 }
 323
 324 void keyboard_startup(gboolean reconfig)
 325 {
 326     grab_keys(TRUE);
 327     popup = popup_new();
 328     popup_set_text_align(popup, RR_JUSTIFY_CENTER);
 329 }
 330
 331 void keyboard_shutdown(gboolean reconfig)
 332 {
 333     if (chain_timer) g_source_remove(chain_timer);
 334
 335     keyboard_unbind_all();
 336     set_curpos(NULL);
 337
 338     popup_free(popup);
 339     popup = NULL;
 340 }