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     if ((t = tree_find(tree, &conflict)) != NULL) {
  60         /* already bound to something */
  61         g_message("keychain is already bound");
  62         tree_destroy(tree);
  63         return FALSE;
  64     }
  65     if (conflict) {
  66         g_message("conflict with binding");
  67         tree_destroy(tree);
  68         return FALSE;
  69     }
  70
  71     /* grab the server here to make sure no key presses go missed */
  72     grab_server(TRUE);
  73     grab_keys(FALSE);
  74
  75     /* set the action */
  76     t = tree;
  77     while (t->first_child) t = t->first_child;
  78     t->action = action;
  79     /* assimilate this built tree into the main tree. assimilation
  80        destroys/uses the tree */
  81     tree_assimilate(tree);
  82
  83     grab_keys(TRUE);
  84     grab_server(FALSE);
  85
  86     return TRUE;
  87 }
  88
  89 static void event(ObEvent *e, void *foo)
  90 {
  91     static KeyBindingTree *grabbed_key = NULL;
  92
  93     if (grabbed_key) {
  94         gboolean done = FALSE;
  95
  96         if ((e->type == Event_X_KeyRelease &&
  97              !(grabbed_key->state & e->data.x.e->xkey.state)))
  98             done = TRUE;
  99         else if (e->type == Event_X_KeyPress) {
 100             if (e->data.x.e->xkey.keycode == button_return)
 101                 done = TRUE;
 102             else if (e->data.x.e->xkey.keycode == button_escape) {
 103                 grabbed_key->action->data.cycle.cancel = TRUE;
 104                 done = TRUE;
 105             }
 106         }
 107         if (done) {
 108             grabbed_key->action->data.cycle.final = TRUE;
 109             grabbed_key->action->func(&grabbed_key->action->data);
 110             grab_keyboard(FALSE);
 111             grabbed_key = NULL;
 112             reset_chains();
 113             return;
 114         }
 115     }
 116     if (e->type == Event_X_KeyRelease)
 117         return;
 118
 119     g_assert(e->type == Event_X_KeyPress);
 120
 121     if (e->data.x.e->xkey.keycode == reset_key &&
 122         e->data.x.e->xkey.state == reset_state) {
 123         reset_chains();
 124     } else {
 125         KeyBindingTree *p;
 126         if (curpos == NULL)
 127             p = firstnode;
 128         else
 129             p = curpos->first_child;
 130         while (p) {
 131             if (p->key == e->data.x.e->xkey.keycode &&
 132                 p->state == e->data.x.e->xkey.state) {
 133                 if (p->first_child != NULL) { /* part of a chain */
 134                     /* XXX TIMER */
 135                     if (!grabbed) {
 136                         grab_keyboard(TRUE);
 137                         grabbed = TRUE;
 138                         XAllowEvents(ob_display, AsyncKeyboard,
 139                                      event_lasttime);
 140                     }
 141                     curpos = p;
 142                 } else {
 143                     if (p->action->func != NULL) {
 144                         p->action->data.any.c = focus_client;
 145
 146                         if (p->action->func == action_cycle_windows) {
 147                             p->action->data.cycle.final = FALSE;
 148                             p->action->data.cycle.cancel = FALSE;
 149                         }
 150
 151                         p->action->func(&p->action->data);
 152
 153                         if (p->action->func == action_cycle_windows &&
 154                             !grabbed_key) {
 155                             grab_keyboard(TRUE);
 156                             grabbed_key = p;
 157                         }
 158                     }
 159
 160                     reset_chains();
 161                 }
 162                 break;
 163             }
 164             p = p->next_sibling;
 165         }
 166     }
 167 }
 168
 169 void plugin_startup()
 170 {
 171     guint i;
 172
 173     curpos = NULL;
 174     grabbed = FALSE;
 175
 176     dispatch_register(Event_X_KeyPress | Event_X_KeyRelease, (EventHandler)event, NULL);
 177
 178     translate_key("C-g", &reset_state, &reset_key);
 179     translate_key("Escape", &i, &button_escape);
 180     translate_key("Return", &i, &button_return);
 181 }
 182
 183 void plugin_shutdown()
 184 {
 185     dispatch_register(0, (EventHandler)event, NULL);
 186
 187     grab_keys(FALSE);
 188     tree_destroy(firstnode);
 189     firstnode = NULL;
 190     grab_keys(TRUE);
 191 }
 192