plugins/keyboard/keyboard.c

   1 #include "kernel/focus.h"
   2 #include "kernel/dispatch.h"
   3 #include "kernel/openbox.h"
   4 #include "kernel/event.h"
   5 #include "kernel/grab.h"
   6 #include "kernel/action.h"
   7 #include "kernel/prop.h"
   8 #include "kernel/timer.h"
   9 #include "parser/parse.h"
  10 #include "tree.h"
  11 #include "keyboard.h"
  12 #include "translate.h"
  13 #include <glib.h>
  14
  15 /*
  16
  17 <keybind key="C-x">
  18   <action name="ChangeDesktop">
  19     <desktop>3</desktop>
  20   </action>
  21 </keybind>
  22
  23 */
  24
  25 static void parse_key(xmlDocPtr doc, xmlNodePtr node, GList *keylist)
  26 {
  27     char *key;
  28     Action *action;
  29     xmlNodePtr n, nact;
  30     GList *it;
  31
  32     n = parse_find_node("keybind", node);
  33     while (n) {
  34         if (parse_attr_string("key", n, &key)) {
  35             keylist = g_list_append(keylist, key);
  36
  37             parse_key(doc, n->xmlChildrenNode, keylist);
  38
  39             it = g_list_last(keylist);
  40             g_free(it->data);
  41             keylist = g_list_delete_link(keylist, it);
  42         }
  43         n = parse_find_node("keybind", n->next);
  44     }
  45     if (keylist) {
  46         nact = parse_find_node("action", node);
  47         while (nact) {
  48             if ((action = action_parse(doc, nact))) {
  49                 /* validate that its okay for a key binding */
  50                 if (action->func == action_moveresize &&
  51                     action->data.moveresize.corner !=
  52                     prop_atoms.net_wm_moveresize_move_keyboard &&
  53                     action->data.moveresize.corner !=
  54                     prop_atoms.net_wm_moveresize_size_keyboard) {
  55                     action_free(action);
  56                     action = NULL;
  57                 }
  58
  59                 if (action)
  60                     kbind(keylist, action);
  61             }
  62             nact = parse_find_node("action", nact->next);
  63         }
  64     }
  65 }
  66
  67 static void parse_xml(xmlDocPtr doc, xmlNodePtr node, void *d)
  68 {
  69     parse_key(doc, node, NULL);
  70 }
  71
  72 void plugin_setup_config()
  73 {
  74     parse_register("keyboard", parse_xml, NULL);
  75 }
  76
  77 KeyBindingTree *firstnode = NULL;
  78
  79 static KeyBindingTree *curpos;
  80 static guint reset_key, reset_state, button_return, button_escape;
  81 static Timer *chain_timer;
  82
  83 static void grab_keys()
  84 {
  85     KeyBindingTree *p;
  86
  87     ungrab_all_keys();
  88
  89     p = curpos ? curpos->first_child : firstnode;
  90     while (p) {
  91         grab_key(p->key, p->state, GrabModeAsync);
  92         p = p->next_sibling;
  93     }
  94     if (curpos)
  95         grab_key(reset_key, reset_state, GrabModeAsync);
  96 }
  97
  98 static void reset_chains()
  99 {
 100     if (chain_timer) {
 101         timer_stop(chain_timer);
 102         chain_timer = NULL;
 103     }
 104     if (curpos) {
 105         curpos = NULL;
 106         grab_keys();
 107     }
 108 }
 109
 110 static void chain_timeout(void *data)
 111 {
 112     reset_chains();
 113 }
 114
 115 gboolean kbind(GList *keylist, Action *action)
 116 {
 117     KeyBindingTree *tree, *t;
 118     gboolean conflict;
 119
 120     g_assert(keylist != NULL);
 121     g_assert(action != NULL);
 122
 123     if (!(tree = tree_build(keylist)))
 124         return FALSE;
 125
 126     if ((t = tree_find(tree, &conflict)) != NULL) {
 127         /* already bound to something, use the existing tree */
 128         tree_destroy(tree);
 129         tree = NULL;
 130     } else
 131         t = tree;
 132     while (t->first_child) t = t->first_child;
 133
 134     if (conflict) {
 135         g_message("conflict with binding");
 136         tree_destroy(tree);
 137         return FALSE;
 138     }
 139
 140     /* set the action */
 141     t->actions = g_slist_append(t->actions, action);
 142     /* assimilate this built tree into the main tree. assimilation
 143        destroys/uses the tree */
 144     if (tree) tree_assimilate(tree);
 145
 146     return TRUE;
 147 }
 148
 149 static void event(ObEvent *e, void *foo)
 150 {
 151     static KeyBindingTree *grabbed_key = NULL;
 152
 153     if (grabbed_key) {
 154         gboolean done = FALSE;
 155
 156         if ((e->type == Event_X_KeyRelease &&
 157              !(grabbed_key->state & e->data.x.e->xkey.state)))
 158             done = TRUE;
 159         else if (e->type == Event_X_KeyPress) {
 160             if (e->data.x.e->xkey.keycode == button_return)
 161                 done = TRUE;
 162             else if (e->data.x.e->xkey.keycode == button_escape) {
 163                 GSList *it;
 164                 for (it = grabbed_key->actions; it; it = it->next) {
 165                     Action *act = it->data;
 166                     act->data.cycle.cancel = TRUE;
 167                 }
 168                 done = TRUE;
 169             }
 170         }
 171         if (done) {
 172             GSList *it;
 173             for (it = grabbed_key->actions; it; it = it->next) {
 174                 Action *act = it->data;
 175                 act->data.cycle.final = TRUE;
 176                 act->func(&act->data);
 177             }
 178             grabbed_key = NULL;
 179             grab_keyboard(FALSE);
 180             reset_chains();
 181             return;
 182         }
 183     }
 184     if (e->type == Event_X_KeyRelease)
 185         return;
 186
 187     g_assert(e->type == Event_X_KeyPress);
 188
 189     if (e->data.x.e->xkey.keycode == reset_key &&
 190         e->data.x.e->xkey.state == reset_state) {
 191         reset_chains();
 192     } else {
 193         KeyBindingTree *p;
 194         if (curpos == NULL)
 195             p = firstnode;
 196         else
 197             p = curpos->first_child;
 198         while (p) {
 199             if (p->key == e->data.x.e->xkey.keycode &&
 200                 p->state == e->data.x.e->xkey.state) {
 201                 if (p->first_child != NULL) { /* part of a chain */
 202                     if (chain_timer) timer_stop(chain_timer);
 203                     /* 5 second timeout for chains */
 204                     chain_timer = timer_start(5000*1000, chain_timeout,
 205                                               NULL);
 206                     curpos = p;
 207                     grab_keys();
 208                 } else {
 209                     GSList *it;
 210                     for (it = p->actions; it; it = it->next) {
 211                         Action *act = it->data;
 212                         if (act->func != NULL) {
 213                             act->data.any.c = focus_client;
 214
 215                             if (act->func == action_cycle_windows) {
 216                                 act->data.cycle.final = FALSE;
 217                                 act->data.cycle.cancel = FALSE;
 218                             }
 219
 220                             act->data.any.c = focus_client;
 221                             act->func(&act->data);
 222
 223                             if (act->func == action_cycle_windows &&
 224                                 !grabbed_key) {
 225                                 grabbed_key = p;
 226                                 grab_keyboard(TRUE);
 227                                 break;
 228                             }
 229                         }
 230                     }
 231
 232                     reset_chains();
 233                 }
 234                 break;
 235             }
 236             p = p->next_sibling;
 237         }
 238     }
 239 }
 240
 241 void plugin_startup()
 242 {
 243     guint i;
 244
 245     curpos = NULL;
 246     chain_timer = NULL;
 247
 248     dispatch_register(Event_X_KeyPress | Event_X_KeyRelease,
 249                       (EventHandler)event, NULL);
 250
 251     translate_key("C-g", &reset_state, &reset_key);
 252     translate_key("Escape", &i, &button_escape);
 253     translate_key("Return", &i, &button_return);
 254
 255     grab_keys();
 256 }
 257
 258 void plugin_shutdown()
 259 {
 260     dispatch_register(0, (EventHandler)event, NULL);
 261
 262     tree_destroy(firstnode);
 263     firstnode = NULL;
 264     ungrab_all_keys();
 265 }
 266