plugins/keyboard/keyboard.c

   1 #include "../../kernel/focus.h"
   2 #include "../../kernel/dispatch.h"
   3 #include "../../kernel/openbox.h"
   4 #include "../../kernel/grab.h"
   5 #include "../../kernel/action.h"
   6 #include "tree.h"
   7 #include "keyboard.h"
   8 #include <glib.h>
   9
  10 KeyBindingTree *firstnode;
  11
  12 static KeyBindingTree *curpos;
  13 static guint reset_key, reset_state;
  14 static gboolean grabbed;
  15
  16 static void grab_keys(gboolean grab)
  17 {
  18     if (!grab) {
  19         XUngrabKey(ob_display, AnyKey, AnyModifier, ob_root);
  20     } else {
  21         KeyBindingTree *p = firstnode;
  22         while (p) {
  23             /* XXX grab all lock keys too */
  24             XGrabKey(ob_display, p->key, p->state, ob_root, FALSE,
  25                      GrabModeAsync, GrabModeSync);
  26             p = p->next_sibling;
  27         }
  28     }
  29 }
  30
  31 static void reset_chains()
  32 {
  33     /* XXX kill timer */
  34     curpos = NULL;
  35     if (grabbed) {
  36         grabbed = FALSE;
  37         grab_keyboard(FALSE);
  38     }
  39 }
  40
  41 static gboolean kbind(GList *keylist, Action *action)
  42 {
  43     KeyBindingTree *tree, *t;
  44     gboolean conflict;
  45
  46     g_assert(keylist != NULL);
  47     g_assert(action != NULL);
  48
  49     if (!(tree = tree_build(keylist))) {
  50         g_warning("invalid binding");
  51         return FALSE;
  52     }
  53     if ((t = tree_find(tree, &conflict)) != NULL) {
  54         /* already bound to something */
  55         g_warning("keychain is already bound");
  56         tree_destroy(tree);
  57         return FALSE;
  58     }
  59     if (conflict) {
  60         g_warning("conflict with binding");
  61         tree_destroy(tree);
  62         return FALSE;
  63     }
  64
  65     /* grab the server here to make sure no key presses go missed */
  66     grab_server(TRUE);
  67     grab_keys(FALSE);
  68
  69     /* set the action */
  70     t = tree;
  71     while (t->first_child) t = t->first_child;
  72     t->action = action;
  73     /* assimilate this built tree into the main tree. assimilation
  74        destroys/uses the tree */
  75     tree_assimilate(tree);
  76
  77     grab_keys(TRUE);
  78     grab_server(FALSE);
  79
  80     return TRUE;
  81 }
  82
  83 static void press(ObEvent *e, void *foo)
  84 {
  85     if (e->data.x.e->xkey.keycode == reset_key &&
  86         e->data.x.e->xkey.state == reset_state) {
  87         reset_chains();
  88         XAllowEvents(ob_display, AsyncKeyboard, CurrentTime);
  89     } else {
  90         KeyBindingTree *p;
  91         if (curpos == NULL)
  92             p = firstnode;
  93         else
  94             p = curpos->first_child;
  95         while (p) {
  96             if (p->key == e->data.x.e->xkey.keycode &&
  97                 p->state == e->data.x.e->xkey.state) {
  98                 if (p->first_child != NULL) { /* part of a chain */
  99                     /* XXX TIMER */
 100                     if (!grabbed) {
 101                         grab_keyboard(TRUE);
 102                         grabbed = TRUE;
 103                         XAllowEvents(ob_display, AsyncKeyboard, CurrentTime);
 104                     }
 105                     curpos = p;
 106                 } else {
 107                     if (p->action->func != NULL) {
 108                         p->action->data.any.c = focus_client;
 109
 110                         g_assert(!(p->action->func == action_move ||
 111                                    p->action->func == action_resize));
 112
 113                         p->action->func(&p->action->data);
 114                     }
 115
 116                     XAllowEvents(ob_display, AsyncKeyboard, CurrentTime);
 117                     reset_chains();
 118                 }
 119                 break;
 120             }
 121             p = p->next_sibling;
 122         }
 123     }
 124 }
 125
 126 static void binddef()
 127 {
 128     GList *list = g_list_append(NULL, NULL);
 129     Action *a;
 130
 131     /* When creating an Action struct, all of the data elements in the
 132        appropriate struct need to be set, except the Client*, which will be set
 133        at call-time when then action function is used.
 134     */
 135
 136     list->data = "C-Right";
 137     a = action_new(action_next_desktop);
 138     a->data.nextprevdesktop.wrap = TRUE;
 139     kbind(list, a);
 140
 141     list->data = "C-Left";
 142     a = action_new(action_previous_desktop);
 143     a->data.nextprevdesktop.wrap = TRUE;
 144     kbind(list, a);
 145
 146     list->data = "C-1";
 147     a = action_new(action_desktop);
 148     a->data.desktop.desk = 0;
 149     kbind(list, a);
 150
 151     list->data = "C-2";
 152     a = action_new(action_desktop);
 153     a->data.desktop.desk = 1;
 154     kbind(list, a);
 155
 156     list->data = "C-3";
 157     a = action_new(action_desktop);
 158     a->data.desktop.desk = 2;
 159     kbind(list, a);
 160
 161     list->data = "C-4";
 162     a = action_new(action_desktop);
 163     a->data.desktop.desk = 3;
 164     kbind(list, a);
 165
 166     list->data = "C-space";
 167     a = action_new(action_execute);
 168     a->data.execute.path = g_strdup("xterm");
 169     kbind(list, a);
 170 }
 171
 172 void plugin_startup()
 173 {
 174     dispatch_register(Event_X_KeyPress, (EventHandler)press, NULL);
 175
 176     /* XXX parse config file! */
 177     binddef();
 178 }
 179
 180 void plugin_shutdown()
 181 {
 182     dispatch_register(0, (EventHandler)press, NULL);
 183
 184     grab_keys(FALSE);
 185     tree_destroy(firstnode);
 186     firstnode = NULL;
 187     grab_keys(TRUE);
 188 }
 189