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
  37 #include <glib.h>
  38
  39 KeyBindingTree *keyboard_firstnode = NULL;
  40 static ObPopup *popup = NULL;
  41 static KeyBindingTree *curpos;
  42
  43 static void grab_keys(gboolean grab)
  44 {
  45     KeyBindingTree *p;
  46
  47     ungrab_all_keys(obt_root(ob_screen));
  48
  49     if (grab) {
  50         p = curpos ? curpos->first_child : keyboard_firstnode;
  51         while (p) {
  52             if (p->key)
  53                 grab_key(p->key, p->state, obt_root(ob_screen),
  54                          GrabModeAsync);
  55             p = p->next_sibling;
  56         }
  57         if (curpos)
  58             grab_key(config_keyboard_reset_keycode,
  59                      config_keyboard_reset_state,
  60                      obt_root(ob_screen), GrabModeAsync);
  61     }
  62 }
  63
  64 static gboolean chain_timeout(gpointer data)
  65 {
  66     keyboard_reset_chains(0);
  67     return FALSE; /* don't repeat */
  68 }
  69
  70 static void set_curpos(KeyBindingTree *newpos)
  71 {
  72     if (curpos == newpos) return;
  73
  74     grab_keys(FALSE);
  75     curpos = newpos;
  76     grab_keys(TRUE);
  77
  78     if (curpos != NULL) {
  79         gchar *text = NULL;
  80         GList *it;
  81         Rect *a;
  82
  83         for (it = curpos->keylist; it; it = g_list_next(it)) {
  84             gchar *oldtext = text;
  85             if (text == NULL)
  86                 text = g_strdup(it->data);
  87             else
  88                 text = g_strconcat(text, " - ", it->data, NULL);
  89             g_free(oldtext);
  90         }
  91
  92         a = screen_physical_area_primary(FALSE);
  93         popup_position(popup, NorthWestGravity, a->x + 10, a->y + 10);
  94         /* 1 second delay for the popup to show */
  95         popup_delay_show(popup, G_USEC_PER_SEC, text);
  96         g_free(text);
  97         g_free(a);
  98     } else {
  99         popup_hide(popup);
 100     }
 101 }
 102
 103 void keyboard_reset_chains(gint break_chroots)
 104 {
 105     KeyBindingTree *p;
 106
 107     for (p = curpos; p; p = p->parent) {
 108         if (p->chroot) {
 109             if (break_chroots == 0) break; /* stop here */
 110             if (break_chroots > 0)
 111                 --break_chroots;
 112         }
 113     }
 114     set_curpos(p);
 115 }
 116
 117 void keyboard_unbind_all(void)
 118 {
 119     tree_destroy(keyboard_firstnode);
 120     keyboard_firstnode = NULL;
 121 }
 122
 123 void keyboard_chroot(GList *keylist)
 124 {
 125     /* try do it in the existing tree. if we can't that means it is an empty
 126        chroot binding. so add it to the tree then. */
 127     if (!tree_chroot(keyboard_firstnode, keylist)) {
 128         KeyBindingTree *tree;
 129         if (!(tree = tree_build(keylist)))
 130             return;
 131         tree_chroot(tree, keylist);
 132         tree_assimilate(tree);
 133     }
 134 }
 135
 136 gboolean keyboard_bind(GList *keylist, ObActionsAct *action)
 137 {
 138     KeyBindingTree *tree, *t;
 139     gboolean conflict;
 140
 141     g_assert(keylist != NULL);
 142     g_assert(action != NULL);
 143
 144     if (!(tree = tree_build(keylist)))
 145         return FALSE;
 146
 147     if ((t = tree_find(tree, &conflict)) != NULL) {
 148         /* already bound to something, use the existing tree */
 149         tree_destroy(tree);
 150         tree = NULL;
 151     } else
 152         t = tree;
 153
 154     if (conflict) {
 155         g_message(_("Conflict with key binding in config file"));
 156         tree_destroy(tree);
 157         return FALSE;
 158     }
 159
 160     /* find the bottom node */
 161     for (; t->first_child; t = t->first_child);
 162
 163     /* set the action */
 164     t->actions = g_slist_append(t->actions, action);
 165     /* assimilate this built tree into the main tree. assimilation
 166        destroys/uses the tree */
 167     if (tree) tree_assimilate(tree);
 168
 169     return TRUE;
 170 }
 171
 172 #if 0
 173 gboolean keyboard_process_interactive_grab(const XEvent *e, ObClient **client)
 174 {
 175     gboolean handled = FALSE;
 176     gboolean done = FALSE;
 177     gboolean cancel = FALSE;
 178
 179     if (istate.active) {
 180         if ((e->type == KeyRelease && !(istate.state & e->xkey.state))) {
 181             done = TRUE;
 182             handled = TRUE;
 183         } else if (e->type == KeyPress) {
 184             /*if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN))
 185               done = TRUE;
 186               else */if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE)) {
 187                   cancel = done = TRUE;
 188                   handled = TRUE;
 189               }
 190         } else if (e->type == ButtonPress) {
 191             cancel = TRUE;
 192             done = TRUE;
 193             handled = FALSE;
 194         }
 195
 196         if (done)
 197             keyboard_interactive_end(e->xkey.state, cancel, e->xkey.time,TRUE);
 198
 199         if (handled)
 200             *client = istate.client;
 201     }
 202
 203     return handled;
 204 }
 205 #endif
 206
 207 void keyboard_event(ObClient *client, const XEvent *e)
 208 {
 209     KeyBindingTree *p;
 210
 211     if (e->type == KeyRelease) {
 212         grab_key_passive_count(-1);
 213         return;
 214     }
 215
 216     g_assert(e->type == KeyPress);
 217     grab_key_passive_count(1);
 218
 219     if (e->xkey.keycode == config_keyboard_reset_keycode &&
 220         e->xkey.state == config_keyboard_reset_state)
 221     {
 222         obt_main_loop_timeout_remove(ob_main_loop, chain_timeout);
 223         keyboard_reset_chains(-1);
 224         return;
 225     }
 226
 227     if (curpos == NULL)
 228         p = keyboard_firstnode;
 229     else
 230         p = curpos->first_child;
 231     while (p) {
 232         if (p->key == e->xkey.keycode &&
 233             p->state == e->xkey.state)
 234         {
 235             /* if we hit a key binding, then close any open menus and run it */
 236             if (menu_frame_visible)
 237                 menu_frame_hide_all();
 238
 239             if (p->first_child != NULL) { /* part of a chain */
 240                 obt_main_loop_timeout_remove(ob_main_loop, chain_timeout);
 241                 /* 3 second timeout for chains */
 242                 obt_main_loop_timeout_add(ob_main_loop, 3 * G_USEC_PER_SEC,
 243                                           chain_timeout, NULL,
 244                                           g_direct_equal, NULL);
 245                 set_curpos(p);
 246             } else if (p->chroot)         /* an empty chroot */
 247                 set_curpos(p);
 248             else {
 249                 GSList *it;
 250
 251                 for (it = p->actions; it; it = g_slist_next(it))
 252                     if (actions_act_is_interactive(it->data)) break;
 253                 if (it == NULL) /* reset if the actions are not interactive */
 254                     keyboard_reset_chains(0);
 255
 256                 actions_run_acts(p->actions, OB_USER_ACTION_KEYBOARD_KEY,
 257                                  e->xkey.state, e->xkey.x_root, e->xkey.y_root,
 258                                  0, OB_FRAME_CONTEXT_NONE, client);
 259             }
 260             break;
 261         }
 262         p = p->next_sibling;
 263     }
 264 }
 265
 266 static void node_rebind(KeyBindingTree *node)
 267 {
 268     if (node->first_child) {
 269         /* find leaf nodes */
 270         node_rebind(node->first_child);
 271
 272         /* for internal nodes, add them to the tree if they
 273            are a chroot, but do this after adding their
 274            children */
 275         if (node->chroot)
 276             keyboard_chroot(node->keylist);
 277     }
 278     else {
 279         /* for leaf nodes, rebind each action assigned to it */
 280         while (node->actions) {
 281             /* add each action, and remove them from the original tree so
 282                they don't get free'd on us */
 283             keyboard_bind(node->keylist, node->actions->data);
 284             node->actions = g_slist_delete_link(node->actions, node->actions);
 285         }
 286
 287         if (node->chroot)
 288             keyboard_chroot(node->keylist);
 289     }
 290
 291     /* go through each sibling */
 292     if (node->next_sibling) node_rebind(node->next_sibling);
 293 }
 294
 295 void keyboard_rebind(void)
 296 {
 297     KeyBindingTree *old;
 298
 299     old = keyboard_firstnode;
 300     keyboard_firstnode = NULL;
 301     node_rebind(old);
 302
 303     tree_destroy(old);
 304     set_curpos(NULL);
 305     grab_keys(TRUE);
 306 }
 307
 308 void keyboard_startup(gboolean reconfig)
 309 {
 310     grab_keys(TRUE);
 311     popup = popup_new();
 312     popup_set_text_align(popup, RR_JUSTIFY_CENTER);
 313 }
 314
 315 void keyboard_shutdown(gboolean reconfig)
 316 {
 317     obt_main_loop_timeout_remove(ob_main_loop, chain_timeout);
 318
 319     keyboard_unbind_all();
 320     set_curpos(NULL);
 321
 322     popup_free(popup);
 323     popup = NULL;
 324 }