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