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 #include "moveresize.h"
  16
  17 #include <glib.h>
  18
  19 KeyBindingTree *keyboard_firstnode;
  20
  21 typedef struct {
  22     guint state;
  23     ObClient *client;
  24     ObAction *action;
  25     ObFrameContext context;
  26 } ObInteractiveState;
  27
  28 static GSList *interactive_states;
  29
  30 static KeyBindingTree *curpos;
  31
  32 static void grab_for_window(Window win, gboolean grab)
  33 {
  34     KeyBindingTree *p;
  35
  36     ungrab_all_keys(win);
  37
  38     if (grab) {
  39         p = curpos ? curpos->first_child : keyboard_firstnode;
  40         while (p) {
  41             grab_key(p->key, p->state, win, GrabModeAsync);
  42             p = p->next_sibling;
  43         }
  44         if (curpos)
  45             grab_key(config_keyboard_reset_keycode,
  46                      config_keyboard_reset_state,
  47                      win, GrabModeAsync);
  48     }
  49 }
  50
  51 void keyboard_grab_for_client(ObClient *c, gboolean grab)
  52 {
  53     grab_for_window(c->window, grab);
  54 }
  55
  56 static void grab_keys(gboolean grab)
  57 {
  58     GList *it;
  59
  60     grab_for_window(screen_support_win, grab);
  61     for (it = client_list; it; it = g_list_next(it))
  62         grab_for_window(((ObClient*)it->data)->window, grab);
  63 }
  64
  65 static gboolean chain_timeout(gpointer data)
  66 {
  67     keyboard_reset_chains();
  68
  69     return FALSE; /* don't repeat */
  70 }
  71
  72 void keyboard_reset_chains()
  73 {
  74     ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
  75
  76     if (curpos) {
  77         grab_keys(FALSE);
  78         curpos = NULL;
  79         grab_keys(TRUE);
  80     }
  81 }
  82
  83 gboolean keyboard_bind(GList *keylist, ObAction *action)
  84 {
  85     KeyBindingTree *tree, *t;
  86     gboolean conflict;
  87     gboolean mods = TRUE;
  88
  89     g_assert(keylist != NULL);
  90     g_assert(action != NULL);
  91
  92     if (!(tree = tree_build(keylist)))
  93         return FALSE;
  94
  95     if ((t = tree_find(tree, &conflict)) != NULL) {
  96         /* already bound to something, use the existing tree */
  97         tree_destroy(tree);
  98         tree = NULL;
  99     } else
 100         t = tree;
 101
 102     if (conflict) {
 103         g_warning("conflict with binding");
 104         tree_destroy(tree);
 105         return FALSE;
 106     }
 107
 108     /* find if every key in this chain has modifiers, and also find the
 109        bottom node of the tree */
 110     while (t->first_child) {
 111         if (!t->state)
 112             mods = FALSE;
 113         t = t->first_child;
 114     }
 115
 116     /* when there are no modifiers in the binding, then the action cannot
 117        be interactive */
 118     if (!mods && action->data.any.interactive) {
 119         action->data.any.interactive = FALSE;
 120         action->data.inter.final = TRUE;
 121     }
 122
 123     /* set the action */
 124     t->actions = g_slist_append(t->actions, action);
 125     /* assimilate this built tree into the main tree. assimilation
 126        destroys/uses the tree */
 127     if (tree) tree_assimilate(tree);
 128
 129     return TRUE;
 130 }
 131
 132 void keyboard_interactive_grab(guint state, ObClient *client,
 133                                ObAction *action)
 134 {
 135     ObInteractiveState *s;
 136
 137     g_assert(action->data.any.interactive);
 138
 139     if (moveresize_in_progress)
 140         moveresize_end(FALSE);
 141
 142     if (!interactive_states) {
 143         if (!grab_keyboard(TRUE))
 144             return;
 145         if (!grab_pointer(TRUE, OB_CURSOR_NONE)) {
 146             grab_keyboard(FALSE);
 147             return;
 148         }
 149     }
 150
 151     s = g_new(ObInteractiveState, 1);
 152
 153     s->state = state;
 154     s->client = client;
 155     s->action = action;
 156
 157     interactive_states = g_slist_append(interactive_states, s);
 158 }
 159
 160 void keyboard_interactive_end(ObInteractiveState *s,
 161                               guint state, gboolean cancel)
 162 {
 163     action_run_interactive(s->action, s->client, state, cancel, TRUE);
 164
 165     g_free(s);
 166
 167     interactive_states = g_slist_remove(interactive_states, s);
 168
 169     if (!interactive_states) {
 170         grab_keyboard(FALSE);
 171         grab_pointer(FALSE, OB_CURSOR_NONE);
 172         keyboard_reset_chains();
 173     }
 174 }
 175
 176 void keyboard_interactive_end_client(gpointer data)
 177 {
 178     GSList *it, *next;
 179     ObClient *c = data;
 180
 181     for (it = interactive_states; it; it = next) {
 182         ObInteractiveState *s = it->data;
 183
 184         next = g_slist_next(it);
 185
 186         if (s->client == c)
 187             keyboard_interactive_end(s, 0, FALSE);
 188     }
 189 }
 190
 191 gboolean keyboard_process_interactive_grab(const XEvent *e, ObClient **client)
 192 {
 193     GSList *it, *next;
 194     gboolean handled = FALSE;
 195     gboolean done = FALSE;
 196     gboolean cancel = FALSE;
 197
 198     for (it = interactive_states; it; it = next) {
 199         ObInteractiveState *s = it->data;
 200
 201         next = g_slist_next(it);
 202
 203         if ((e->type == KeyRelease &&
 204              !(s->state & e->xkey.state)))
 205             done = TRUE;
 206         else if (e->type == KeyPress) {
 207             if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN))
 208                 done = TRUE;
 209             else if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE))
 210                 cancel = done = TRUE;
 211         }
 212         if (done) {
 213             keyboard_interactive_end(s, e->xkey.state, cancel);
 214
 215             handled = TRUE;
 216         } else
 217             *client = s->client;
 218     }
 219
 220     return handled;
 221 }
 222
 223 void keyboard_event(ObClient *client, const XEvent *e)
 224 {
 225     KeyBindingTree *p;
 226
 227     g_assert(e->type == KeyPress);
 228
 229     if (e->xkey.keycode == config_keyboard_reset_keycode &&
 230         e->xkey.state == config_keyboard_reset_state)
 231     {
 232         keyboard_reset_chains();
 233         return;
 234     }
 235
 236     if (curpos == NULL)
 237         p = keyboard_firstnode;
 238     else
 239         p = curpos->first_child;
 240     while (p) {
 241         if (p->key == e->xkey.keycode &&
 242             p->state == e->xkey.state)
 243         {
 244             if (p->first_child != NULL) { /* part of a chain */
 245                 ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
 246                 /* 5 second timeout for chains */
 247                 ob_main_loop_timeout_add(ob_main_loop, 5 * G_USEC_PER_SEC,
 248                                          chain_timeout, NULL, NULL);
 249                 grab_keys(FALSE);
 250                 curpos = p;
 251                 grab_keys(TRUE);
 252             } else {
 253                 GSList *it;
 254
 255                 for (it = p->actions; it; it = it->next)
 256                     action_run_key(it->data, client, e->xkey.state,
 257                                    e->xkey.x_root, e->xkey.y_root);
 258
 259                 keyboard_reset_chains();
 260             }
 261             break;
 262         }
 263         p = p->next_sibling;
 264     }
 265 }
 266
 267 void keyboard_startup(gboolean reconfig)
 268 {
 269     grab_keys(TRUE);
 270
 271     if (!reconfig)
 272         client_add_destructor(keyboard_interactive_end_client);
 273 }
 274
 275 void keyboard_shutdown(gboolean reconfig)
 276 {
 277     GSList *it;
 278
 279     if (!reconfig)
 280         client_remove_destructor(keyboard_interactive_end_client);
 281
 282     tree_destroy(keyboard_firstnode);
 283     keyboard_firstnode = NULL;
 284
 285     for (it = interactive_states; it; it = g_slist_next(it))
 286         g_free(it->data);
 287     g_slist_free(interactive_states);
 288     interactive_states = NULL;
 289
 290     ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
 291     grab_keys(FALSE);
 292     curpos = NULL;
 293 }
 294