openbox/keyboard.c

   1 #include "mainloop.h"
   2 #include "focus.h"
   3 #include "screen.h"
   4 #include "frame.h"
   5 #include "openbox.h"
   6 #include "event.h"
   7 #include "grab.h"
   8 #include "client.h"
   9 #include "action.h"
  10 #include "prop.h"
  11 #include "config.h"
  12 #include "keytree.h"
  13 #include "keyboard.h"
  14 #include "translate.h"
  15
  16 #include <glib.h>
  17
  18 KeyBindingTree *keyboard_firstnode;
  19
  20 typedef struct {
  21     guint state;
  22     ObClient *client;
  23     ObAction *action;
  24     ObFrameContext context;
  25 } ObInteractiveState;
  26
  27 static GSList *interactive_states;
  28
  29 static KeyBindingTree *curpos;
  30
  31 static void grab_for_window(Window win, gboolean grab)
  32 {
  33     KeyBindingTree *p;
  34
  35     ungrab_all_keys(win);
  36
  37     if (grab) {
  38         p = curpos ? curpos->first_child : keyboard_firstnode;
  39         while (p) {
  40             grab_key(p->key, p->state, win, GrabModeAsync);
  41             p = p->next_sibling;
  42         }
  43         if (curpos)
  44             grab_key(config_keyboard_reset_keycode,
  45                      config_keyboard_reset_state,
  46                      win, GrabModeAsync);
  47     }
  48 }
  49
  50 void keyboard_grab_for_client(ObClient *c, gboolean grab)
  51 {
  52     grab_for_window(c->window, grab);
  53 }
  54
  55 static void grab_keys(gboolean grab)
  56 {
  57     GList *it;
  58
  59     grab_for_window(screen_support_win, grab);
  60     for (it = client_list; it; it = g_list_next(it))
  61         grab_for_window(((ObClient*)it->data)->frame->window, grab);
  62 }
  63
  64 static gboolean chain_timeout(gpointer data)
  65 {
  66     keyboard_reset_chains();
  67
  68     return FALSE; /* don't repeat */
  69 }
  70
  71 void keyboard_reset_chains()
  72 {
  73     ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
  74
  75     if (curpos) {
  76         curpos = NULL;
  77         grab_keys(TRUE);
  78     }
  79 }
  80
  81 gboolean keyboard_bind(GList *keylist, ObAction *action)
  82 {
  83     KeyBindingTree *tree, *t;
  84     gboolean conflict;
  85
  86     g_assert(keylist != NULL);
  87     g_assert(action != NULL);
  88
  89     if (!(tree = tree_build(keylist)))
  90         return FALSE;
  91
  92     if ((t = tree_find(tree, &conflict)) != NULL) {
  93         /* already bound to something, use the existing tree */
  94         tree_destroy(tree);
  95         tree = NULL;
  96     } else
  97         t = tree;
  98     while (t->first_child) t = t->first_child;
  99
 100     if (conflict) {
 101         g_warning("conflict with binding");
 102         tree_destroy(tree);
 103         return FALSE;
 104     }
 105
 106     /* set the action */
 107     t->actions = g_slist_append(t->actions, action);
 108     /* assimilate this built tree into the main tree. assimilation
 109        destroys/uses the tree */
 110     if (tree) tree_assimilate(tree);
 111
 112     return TRUE;
 113 }
 114
 115 void keyboard_interactive_grab(guint state, ObClient *client,
 116                                ObFrameContext context, ObAction *action)
 117 {
 118     ObInteractiveState *s;
 119
 120     if (!interactive_states) {
 121         if (!grab_keyboard(TRUE))
 122             return;
 123         if (!grab_pointer(TRUE, None)) {
 124             grab_keyboard(FALSE);
 125             return;
 126         }
 127     }
 128
 129     s = g_new(ObInteractiveState, 1);
 130
 131     s->state = state;
 132     s->client = client;
 133     s->action = action;
 134     s->context = context;
 135
 136     interactive_states = g_slist_append(interactive_states, s);
 137 }
 138
 139 gboolean keyboard_process_interactive_grab(const XEvent *e,
 140                                            ObClient **client,
 141                                            ObFrameContext *context)
 142 {
 143     GSList *it, *next;
 144     gboolean handled = FALSE;
 145     gboolean done = FALSE;
 146     gboolean cancel = FALSE;
 147
 148     for (it = interactive_states; it; it = next) {
 149         ObInteractiveState *s = it->data;
 150
 151         next = g_slist_next(it);
 152
 153         *client = s->client;
 154         *context = s->context;
 155
 156         if ((e->type == KeyRelease &&
 157              !(s->state & e->xkey.state)))
 158             done = TRUE;
 159         else if (e->type == KeyPress) {
 160             if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN))
 161                 done = TRUE;
 162             else if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE))
 163                 cancel = done = TRUE;
 164         }
 165         if (done) {
 166             g_assert(s->action->data.any.interactive);
 167
 168             s->action->data.inter.cancel = cancel;
 169             s->action->data.inter.final = TRUE;
 170
 171             s->action->func(&s->action->data);
 172
 173             grab_keyboard(FALSE);
 174             grab_pointer(FALSE, None);
 175             keyboard_reset_chains();
 176
 177             g_free(s);
 178             interactive_states = g_slist_delete_link(interactive_states, it);
 179             handled = TRUE;
 180         }
 181     }
 182
 183     return handled;
 184 }
 185
 186 void keyboard_event(ObClient *client, const XEvent *e)
 187 {
 188     KeyBindingTree *p;
 189
 190     g_assert(e->type == KeyPress);
 191
 192     if (e->xkey.keycode == config_keyboard_reset_keycode &&
 193         e->xkey.state == config_keyboard_reset_state)
 194     {
 195         keyboard_reset_chains();
 196         return;
 197     }
 198
 199     if (curpos == NULL)
 200         p = keyboard_firstnode;
 201     else
 202         p = curpos->first_child;
 203     while (p) {
 204         if (p->key == e->xkey.keycode &&
 205             p->state == e->xkey.state) {
 206             if (p->first_child != NULL) { /* part of a chain */
 207                 ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
 208                 /* 5 second timeout for chains */
 209                 ob_main_loop_timeout_add(ob_main_loop, 5 * G_USEC_PER_SEC,
 210                                          chain_timeout, NULL, NULL);
 211                 curpos = p;
 212                 grab_keys(TRUE);
 213             } else {
 214                 GSList *it;
 215                 for (it = p->actions; it; it = it->next) {
 216                     ObAction *act = it->data;
 217                     if (act->func != NULL) {
 218                         act->data.any.c = client;
 219
 220                         if (act->func == action_moveresize) {
 221                             screen_pointer_pos(&act->data.moveresize.x,
 222                                                &act->data.moveresize.y);
 223                         }
 224
 225                         if (act->data.any.interactive) {
 226                             act->data.inter.cancel = FALSE;
 227                             act->data.inter.final = FALSE;
 228                             keyboard_interactive_grab(e->xkey.state, client,
 229                                                       0, act);
 230                         }
 231
 232                         if (act->func == action_showmenu) {
 233                             act->data.showmenu.x = e->xkey.x_root;
 234                             act->data.showmenu.y = e->xkey.y_root;
 235                         }
 236
 237                         act->data.any.c = client;
 238                         act->func(&act->data);
 239                     }
 240                 }
 241
 242                 keyboard_reset_chains();
 243             }
 244             break;
 245         }
 246         p = p->next_sibling;
 247     }
 248 }
 249
 250 void keyboard_startup()
 251 {
 252     grab_keys(TRUE);
 253 }
 254
 255 void keyboard_shutdown()
 256 {
 257     tree_destroy(keyboard_firstnode);
 258     keyboard_firstnode = NULL;
 259     grab_keys(FALSE);
 260 }
 261