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/parse.h"
   8 #include "kernel/timer.h"
   9 #include "tree.h"
  10 #include "keyboard.h"
  11 #include "keyparse.h"
  12 #include "translate.h"
  13 #include <glib.h>
  14
  15 void plugin_setup_config()
  16 {
  17     parse_reg_section("keyboard", keyparse, NULL);
  18 }
  19
  20 KeyBindingTree *firstnode = NULL;
  21
  22 static KeyBindingTree *curpos;
  23 static guint reset_key, reset_state, button_return, button_escape;
  24 static Timer *chain_timer;
  25
  26 static void grab_keys()
  27 {
  28     KeyBindingTree *p;
  29
  30     ungrab_all_keys();
  31
  32     p = curpos ? curpos->first_child : firstnode;
  33     while (p) {
  34         grab_key(p->key, p->state, GrabModeAsync);
  35         p = p->next_sibling;
  36     }
  37     if (curpos)
  38         grab_key(reset_key, reset_state, GrabModeAsync);
  39 }
  40
  41 static void reset_chains()
  42 {
  43     if (chain_timer) {
  44         timer_stop(chain_timer);
  45         chain_timer = NULL;
  46     }
  47     if (curpos) {
  48         curpos = NULL;
  49         grab_keys();
  50     }
  51 }
  52
  53 static void chain_timeout(void *data)
  54 {
  55     reset_chains();
  56 }
  57
  58 gboolean kbind(GList *keylist, Action *action)
  59 {
  60     KeyBindingTree *tree, *t;
  61     gboolean conflict;
  62
  63     g_assert(keylist != NULL);
  64     g_assert(action != NULL);
  65
  66     if (!(tree = tree_build(keylist)))
  67         return FALSE;
  68
  69     if ((t = tree_find(tree, &conflict)) != NULL) {
  70         /* already bound to something, use the existing tree */
  71         tree_destroy(tree);
  72         tree = NULL;
  73     } else
  74         t = tree;
  75     while (t->first_child) t = t->first_child;
  76
  77     if (conflict) {
  78         g_message("conflict with binding");
  79         tree_destroy(tree);
  80         return FALSE;
  81     }
  82
  83     /* set the action */
  84     t->actions = g_slist_append(t->actions, action);
  85     /* assimilate this built tree into the main tree. assimilation
  86        destroys/uses the tree */
  87     if (tree) tree_assimilate(tree);
  88
  89     return TRUE;
  90 }
  91
  92 static void event(ObEvent *e, void *foo)
  93 {
  94     static KeyBindingTree *grabbed_key = NULL;
  95
  96     if (grabbed_key) {
  97         gboolean done = FALSE;
  98
  99         if ((e->type == Event_X_KeyRelease &&
 100              !(grabbed_key->state & e->data.x.e->xkey.state)))
 101             done = TRUE;
 102         else if (e->type == Event_X_KeyPress) {
 103             if (e->data.x.e->xkey.keycode == button_return)
 104                 done = TRUE;
 105             else if (e->data.x.e->xkey.keycode == button_escape) {
 106                 GSList *it;
 107                 for (it = grabbed_key->actions; it; it = it->next) {
 108                     Action *act = it->data;
 109                     act->data.cycle.cancel = TRUE;
 110                 }
 111                 done = TRUE;
 112             }
 113         }
 114         if (done) {
 115             GSList *it;
 116             for (it = grabbed_key->actions; it; it = it->next) {
 117                 Action *act = it->data;
 118                 act->data.cycle.final = TRUE;
 119                 act->func(&act->data);
 120             }
 121             grabbed_key = NULL;
 122             grab_keyboard(FALSE);
 123             reset_chains();
 124             return;
 125         }
 126     }
 127     if (e->type == Event_X_KeyRelease)
 128         return;
 129
 130     g_assert(e->type == Event_X_KeyPress);
 131
 132     if (e->data.x.e->xkey.keycode == reset_key &&
 133         e->data.x.e->xkey.state == reset_state) {
 134         reset_chains();
 135     } else {
 136         KeyBindingTree *p;
 137         if (curpos == NULL)
 138             p = firstnode;
 139         else
 140             p = curpos->first_child;
 141         while (p) {
 142             if (p->key == e->data.x.e->xkey.keycode &&
 143                 p->state == e->data.x.e->xkey.state) {
 144                 if (p->first_child != NULL) { /* part of a chain */
 145                     if (chain_timer) timer_stop(chain_timer);
 146                     /* 5 second timeout for chains */
 147                     chain_timer = timer_start(5000*1000, chain_timeout,
 148                                               NULL);
 149                     curpos = p;
 150                     grab_keys();
 151                 } else {
 152                     GSList *it;
 153                     for (it = p->actions; it; it = it->next) {
 154                         Action *act = it->data;
 155                         if (act->func != NULL) {
 156                             act->data.any.c = focus_client;
 157
 158                             if (act->func == action_cycle_windows) {
 159                                 act->data.cycle.final = FALSE;
 160                                 act->data.cycle.cancel = FALSE;
 161                             }
 162
 163                             act->func(&act->data);
 164
 165                             if (act->func == action_cycle_windows &&
 166                                 !grabbed_key) {
 167                                 grabbed_key = p;
 168                                 grab_keyboard(TRUE);
 169                                 break;
 170                             }
 171                         }
 172                     }
 173
 174                     reset_chains();
 175                 }
 176                 break;
 177             }
 178             p = p->next_sibling;
 179         }
 180     }
 181 }
 182
 183 void plugin_startup()
 184 {
 185     guint i;
 186
 187     curpos = NULL;
 188     chain_timer = NULL;
 189
 190     dispatch_register(Event_X_KeyPress | Event_X_KeyRelease,
 191                       (EventHandler)event, NULL);
 192
 193     translate_key("C-g", &reset_state, &reset_key);
 194     translate_key("Escape", &i, &button_escape);
 195     translate_key("Return", &i, &button_return);
 196
 197     grab_keys();
 198 }
 199
 200 void plugin_shutdown()
 201 {
 202     dispatch_register(0, (EventHandler)event, NULL);
 203
 204     tree_destroy(firstnode);
 205     firstnode = NULL;
 206     ungrab_all_keys();
 207 }
 208