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 "tree.h"
   9 #include "keyboard.h"
  10 #include "keyparse.h"
  11 #include "translate.h"
  12 #include <glib.h>
  13
  14 void plugin_setup_config()
  15 {
  16     parse_reg_section("keyboard", keyparse, NULL);
  17 }
  18
  19 KeyBindingTree *firstnode = NULL;
  20
  21 static KeyBindingTree *curpos;
  22 static guint reset_key, reset_state, button_return, button_escape;
  23 static gboolean grabbed;
  24
  25 static void grab_keys(gboolean grab)
  26 {
  27     if (!grab) {
  28         ungrab_all_keys();
  29     } else {
  30         KeyBindingTree *p = firstnode;
  31         while (p) {
  32             grab_key(p->key, p->state, GrabModeSync);
  33             p = p->next_sibling;
  34         }
  35     }
  36 }
  37
  38 static void reset_chains()
  39 {
  40     /* XXX kill timer */
  41     curpos = NULL;
  42     if (grabbed) {
  43         grabbed = FALSE;
  44         grab_keyboard(FALSE);
  45     } else
  46         XAllowEvents(ob_display, AsyncKeyboard, event_lasttime);
  47 }
  48
  49 gboolean kbind(GList *keylist, Action *action)
  50 {
  51     KeyBindingTree *tree, *t;
  52     gboolean conflict;
  53
  54     g_assert(keylist != NULL);
  55     g_assert(action != NULL);
  56
  57     if (!(tree = tree_build(keylist)))
  58         return FALSE;
  59
  60     if ((t = tree_find(tree, &conflict)) != NULL) {
  61         /* already bound to something, use the existing tree */
  62         tree_destroy(tree);
  63         tree = NULL;
  64     } else
  65         t = tree;
  66     while (t->first_child) t = t->first_child;
  67
  68     if (conflict) {
  69         g_message("conflict with binding");
  70         tree_destroy(tree);
  71         return FALSE;
  72     }
  73
  74     /* grab the server here to make sure no key presses go missed */
  75     grab_server(TRUE);
  76     grab_keys(FALSE);
  77
  78     /* set the action */
  79     t->actions = g_slist_append(t->actions, action);
  80     /* assimilate this built tree into the main tree. assimilation
  81        destroys/uses the tree */
  82     if (tree) tree_assimilate(tree);
  83
  84     grab_keys(TRUE);
  85     grab_server(FALSE);
  86
  87     return TRUE;
  88 }
  89
  90 static void event(ObEvent *e, void *foo)
  91 {
  92     static KeyBindingTree *grabbed_key = NULL;
  93
  94     if (grabbed_key) {
  95         gboolean done = FALSE;
  96
  97         if ((e->type == Event_X_KeyRelease &&
  98              !(grabbed_key->state & e->data.x.e->xkey.state)))
  99             done = TRUE;
 100         else if (e->type == Event_X_KeyPress) {
 101             if (e->data.x.e->xkey.keycode == button_return)
 102                 done = TRUE;
 103             else if (e->data.x.e->xkey.keycode == button_escape) {
 104                 GSList *it;
 105                 for (it = grabbed_key->actions; it; it = it->next) {
 106                     Action *act = it->data;
 107                     act->data.cycle.cancel = TRUE;
 108                 }
 109                 done = TRUE;
 110             }
 111         }
 112         if (done) {
 113             GSList *it;
 114             for (it = grabbed_key->actions; it; it = it->next) {
 115                 Action *act = it->data;
 116                 act->data.cycle.final = TRUE;
 117                 act->func(&act->data);
 118                 grab_keyboard(FALSE);
 119                 grabbed_key = NULL;
 120                 reset_chains();
 121                 return;
 122             }
 123         }
 124     }
 125     if (e->type == Event_X_KeyRelease)
 126         return;
 127
 128     g_assert(e->type == Event_X_KeyPress);
 129
 130     if (e->data.x.e->xkey.keycode == reset_key &&
 131         e->data.x.e->xkey.state == reset_state) {
 132         reset_chains();
 133     } else {
 134         KeyBindingTree *p;
 135         if (curpos == NULL)
 136             p = firstnode;
 137         else
 138             p = curpos->first_child;
 139         while (p) {
 140             if (p->key == e->data.x.e->xkey.keycode &&
 141                 p->state == e->data.x.e->xkey.state) {
 142                 if (p->first_child != NULL) { /* part of a chain */
 143                     /* XXX TIMER */
 144                     if (!grabbed) {
 145                         grab_keyboard(TRUE);
 146                         grabbed = TRUE;
 147                         XAllowEvents(ob_display, AsyncKeyboard,
 148                                      event_lasttime);
 149                     }
 150                     curpos = p;
 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                                 grab_keyboard(TRUE);
 168                                 grabbed_key = p;
 169                             }
 170                         }
 171                     }
 172
 173                     reset_chains();
 174                 }
 175                 break;
 176             }
 177             p = p->next_sibling;
 178         }
 179     }
 180 }
 181
 182 void plugin_startup()
 183 {
 184     guint i;
 185
 186     curpos = NULL;
 187     grabbed = FALSE;
 188
 189     dispatch_register(Event_X_KeyPress | Event_X_KeyRelease, (EventHandler)event, NULL);
 190
 191     translate_key("C-g", &reset_state, &reset_key);
 192     translate_key("Escape", &i, &button_escape);
 193     translate_key("Return", &i, &button_return);
 194 }
 195
 196 void plugin_shutdown()
 197 {
 198     dispatch_register(0, (EventHandler)event, NULL);
 199
 200     grab_keys(FALSE);
 201     tree_destroy(firstnode);
 202     firstnode = NULL;
 203     grab_keys(TRUE);
 204 }
 205