Dogcows Code - chaz/openbox/blob - 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 "actions.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 KeyBindingTree *keyboard_firstnode = NULL;
  42 static ObPopup *popup = NULL;
  43 static KeyBindingTree *curpos;
  44
  45 static void grab_keys(gboolean grab)
  46 {
  47     KeyBindingTree *p;
  48
  49     ungrab_all_keys(RootWindow(ob_display, 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, RootWindow(ob_display, ob_screen),
  56                          GrabModeSync);
  57             p = p->next_sibling;
  58         }
  59         if (curpos)
  60             grab_key(config_keyboard_reset_keycode,
  61                      config_keyboard_reset_state,
  62                      RootWindow(ob_display, ob_screen), GrabModeSync);
  63     }
  64 }
  65
  66 static gboolean chain_timeout(gpointer data)
  67 {
  68     keyboard_reset_chains(0);
  69     return FALSE; /* don't repeat */
  70 }
  71
  72 static void set_curpos(KeyBindingTree *newpos)
  73 {
  74     if (curpos == newpos) return;
  75
  76     grab_keys(FALSE);
  77     curpos = newpos;
  78     grab_keys(TRUE);
  79
  80     if (curpos != NULL) {
  81         gchar *text = NULL;
  82         GList *it;
  83         Rect *a;
  84
  85         for (it = curpos->keylist; it; it = g_list_next(it)) {
  86             gchar *oldtext = text;
  87             if (text == NULL)
  88                 text = g_strdup(it->data);
  89             else
  90                 text = g_strconcat(text, " - ", it->data, NULL);
  91             g_free(oldtext);
  92         }
  93
  94         a = screen_physical_area_active();
  95         popup_position(popup, NorthWestGravity, a->x + 10, a->y + 10);
  96         /* 1 second delay for the popup to show */
  97         popup_delay_show(popup, G_USEC_PER_SEC, text);
  98         g_free(text);
  99         g_free(a);
 100     } else {
 101         popup_hide(popup);
 102     }
 103 }
 104
 105 void keyboard_reset_chains(gint break_chroots)
 106 {
 107     KeyBindingTree *p;
 108
 109     for (p = curpos; p; p = p->parent) {
 110         if (p->chroot) {
 111             if (break_chroots == 0) break; /* stop here */
 112             if (break_chroots > 0)
 113                 --break_chroots;
 114         }
 115     }
 116     set_curpos(p);
 117 }
 118
 119 void keyboard_unbind_all(void)
 120 {
 121     tree_destroy(keyboard_firstnode);
 122     keyboard_firstnode = NULL;
 123 }
 124
 125 void keyboard_chroot(GList *keylist)
 126 {
 127     /* try do it in the existing tree. if we can't that means it is an empty
 128        chroot binding. so add it to the tree then. */
 129     if (!tree_chroot(keyboard_firstnode, keylist)) {
 130         KeyBindingTree *tree;
 131         if (!(tree = tree_build(keylist)))
 132             return;
 133         tree_chroot(tree, keylist);
 134         tree_assimilate(tree);
 135     }
 136 }
 137
 138 gboolean keyboard_bind(GList *keylist, ObActionsAct *action)
 139 {
 140     KeyBindingTree *tree, *t;
 141     gboolean conflict;
 142
 143     g_assert(keylist != NULL);
 144     g_assert(action != NULL);
 145
 146     if (!(tree = tree_build(keylist)))
 147         return FALSE;
 148
 149     if ((t = tree_find(tree, &conflict)) != NULL) {
 150         /* already bound to something, use the existing tree */
 151         tree_destroy(tree);
 152         tree = NULL;
 153     } else
 154         t = tree;
 155
 156     if (conflict) {
 157         g_message(_("Conflict with key binding in config file"));
 158         tree_destroy(tree);
 159         return FALSE;
 160     }
 161
 162     /* find the bottom node */
 163     for (; t->first_child; t = t->first_child);
 164
 165     /* set the action */
 166     t->actions = g_slist_append(t->actions, action);
 167     /* assimilate this built tree into the main tree. assimilation
 168        destroys/uses the tree */
 169     if (tree) tree_assimilate(tree);
 170
 171     return TRUE;
 172 }
 173
 174 #if 0
 175 gboolean keyboard_process_interactive_grab(const XEvent *e, ObClient **client)
 176 {
 177     gboolean handled = FALSE;
 178     gboolean done = FALSE;
 179     gboolean cancel = FALSE;
 180
 181     if (istate.active) {
 182         if ((e->type == KeyRelease && !(istate.state & e->xkey.state))) {
 183             done = TRUE;
 184             handled = TRUE;
 185         } else if (e->type == KeyPress) {
 186             /*if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN))
 187               done = TRUE;
 188               else */if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE)) {
 189                   cancel = done = TRUE;
 190                   handled = TRUE;
 191               }
 192         } else if (e->type == ButtonPress) {
 193             cancel = TRUE;
 194             done = TRUE;
 195             handled = FALSE;
 196         }
 197
 198         if (done)
 199             keyboard_interactive_end(e->xkey.state, cancel, e->xkey.time,TRUE);
 200
 201         if (handled)
 202             *client = istate.client;
 203     }
 204
 205     return handled;
 206 }
 207 #endif
 208
 209 void keyboard_event(ObClient *client, const XEvent *e)
 210 {
 211     KeyBindingTree *p;
 212
 213     if (e->type == KeyRelease) {
 214         grab_key_passive_count(-1);
 215         return;
 216     }
 217
 218     g_assert(e->type == KeyPress);
 219     grab_key_passive_count(1);
 220
 221     if (e->xkey.keycode == config_keyboard_reset_keycode &&
 222         e->xkey.state == config_keyboard_reset_state)
 223     {
 224         ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
 225         keyboard_reset_chains(-1);
 226         return;
 227     }
 228
 229     if (curpos == NULL)
 230         p = keyboard_firstnode;
 231     else
 232         p = curpos->first_child;
 233     while (p) {
 234         if (p->key == e->xkey.keycode &&
 235             p->state == e->xkey.state)
 236         {
 237             /* if we hit a key binding, then close any open menus and run it */
 238             if (menu_frame_visible)
 239                 menu_frame_hide_all();
 240
 241             if (p->first_child != NULL) { /* part of a chain */
 242                 ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
 243                 /* 3 second timeout for chains */
 244                 ob_main_loop_timeout_add(ob_main_loop, 3 * G_USEC_PER_SEC,
 245                                          chain_timeout, NULL,
 246                                          g_direct_equal, NULL);
 247                 set_curpos(p);
 248             } else if (p->chroot)         /* an empty chroot */
 249                 set_curpos(p);
 250             else {
 251                 GSList *it;
 252
 253                 for (it = p->actions; it; it = g_slist_next(it))
 254                     if (actions_act_is_interactive(it->data)) break;
 255                 if (it == NULL) /* reset if the actions are not interactive */
 256                     keyboard_reset_chains(0);
 257
 258                 actions_run_acts(p->actions, OB_USER_ACTION_KEYBOARD_KEY,
 259                                  e->xkey.state, e->xkey.x_root, e->xkey.y_root,
 260                                  0, OB_FRAME_CONTEXT_NONE, client);
 261             }
 262             break;
 263         }
 264         p = p->next_sibling;
 265     }
 266
 267     XAllowEvents(ob_display, AsyncKeyboard, event_curtime);
 268 }
 269
 270 static void node_rebind(KeyBindingTree *node)
 271 {
 272     if (node->first_child) {
 273         /* find leaf nodes */
 274         node_rebind(node->first_child);
 275
 276         /* for internal nodes, add them to the tree if they
 277            are a chroot, but do this after adding their
 278            children */
 279         if (node->chroot)
 280             keyboard_chroot(node->keylist);
 281     }
 282     else {
 283         /* for leaf nodes, rebind each action assigned to it */
 284         while (node->actions) {
 285             /* add each action, and remove them from the original tree so
 286                they don't get free'd on us */
 287             keyboard_bind(node->keylist, node->actions->data);
 288             node->actions = g_slist_delete_link(node->actions, node->actions);
 289         }
 290
 291         if (node->chroot)
 292             keyboard_chroot(node->keylist);
 293     }
 294
 295     /* go through each sibling */
 296     if (node->next_sibling) node_rebind(node->next_sibling);
 297 }
 298
 299 void keyboard_rebind(void)
 300 {
 301     KeyBindingTree *old;
 302
 303     old = keyboard_firstnode;
 304     keyboard_firstnode = NULL;
 305     node_rebind(old);
 306
 307     tree_destroy(old);
 308     set_curpos(NULL);
 309     grab_keys(TRUE);
 310 }
 311
 312 void keyboard_startup(gboolean reconfig)
 313 {
 314     grab_keys(TRUE);
 315     popup = popup_new();
 316     popup_set_text_align(popup, RR_JUSTIFY_CENTER);
 317 }
 318
 319 void keyboard_shutdown(gboolean reconfig)
 320 {
 321     ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
 322
 323     keyboard_unbind_all();
 324     set_curpos(NULL);
 325
 326     popup_free(popup);
 327     popup = NULL;
 328 }
 329