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             if (s->action->func == action_cycle_windows) {
 167                 s->action->data.cycle.cancel = cancel;
 168                 s->action->data.cycle.final = TRUE;
 169             }
 170             if (s->action->func == action_desktop_dir) {
 171                 s->action->data.desktopdir.cancel = cancel;
 172                 s->action->data.desktopdir.final = TRUE;
 173             }
 174             if (s->action->func == action_send_to_desktop_dir) {
 175                 s->action->data.sendtodir.cancel = cancel;
 176                 s->action->data.sendtodir.final = TRUE;
 177             }
 178
 179             s->action->func(&s->action->data);
 180
 181             grab_keyboard(FALSE);
 182             grab_pointer(FALSE, None);
 183             keyboard_reset_chains();
 184
 185             g_free(s);
 186             interactive_states = g_slist_delete_link(interactive_states, it);
 187             handled = TRUE;
 188         }
 189     }
 190
 191     return handled;
 192 }
 193
 194 void keyboard_event(ObClient *client, const XEvent *e)
 195 {
 196     KeyBindingTree *p;
 197
 198     g_assert(e->type == KeyPress);
 199
 200     if (e->xkey.keycode == config_keyboard_reset_keycode &&
 201         e->xkey.state == config_keyboard_reset_state)
 202     {
 203         keyboard_reset_chains();
 204         return;
 205     }
 206
 207     if (curpos == NULL)
 208         p = keyboard_firstnode;
 209     else
 210         p = curpos->first_child;
 211     while (p) {
 212         if (p->key == e->xkey.keycode &&
 213             p->state == e->xkey.state) {
 214             if (p->first_child != NULL) { /* part of a chain */
 215                 ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
 216                 /* 5 second timeout for chains */
 217                 ob_main_loop_timeout_add(ob_main_loop, 5 * G_USEC_PER_SEC,
 218                                          chain_timeout, NULL, NULL);
 219                 curpos = p;
 220                 grab_keys(TRUE);
 221             } else {
 222                 GSList *it;
 223                 for (it = p->actions; it; it = it->next) {
 224                     ObAction *act = it->data;
 225                     if (act->func != NULL) {
 226                         act->data.any.c = client;
 227
 228                         if (act->func == action_cycle_windows)
 229                         {
 230                             act->data.cycle.final = FALSE;
 231                             act->data.cycle.cancel = FALSE;
 232                         }
 233                         if (act->func == action_desktop_dir)
 234                         {
 235                             act->data.desktopdir.final = FALSE;
 236                             act->data.desktopdir.cancel = FALSE;
 237                         }
 238                         if (act->func == action_send_to_desktop_dir)
 239                         {
 240                             act->data.sendtodir.final = FALSE;
 241                             act->data.sendtodir.cancel = FALSE;
 242                         }
 243
 244                         if (act->func == action_moveresize)
 245                         {
 246                             screen_pointer_pos(&act->data.moveresize.x,
 247                                                &act->data.moveresize.y);
 248                         }
 249
 250                         if ((act->func == action_cycle_windows ||
 251                              act->func == action_desktop_dir ||
 252                              act->func == action_send_to_desktop_dir))
 253                         {
 254                             keyboard_interactive_grab(e->xkey.state, client,
 255                                                       0, act);
 256                         }
 257
 258                         if (act->func == action_showmenu)
 259                         {
 260                             act->data.showmenu.x = e->xkey.x_root;
 261                             act->data.showmenu.y = e->xkey.y_root;
 262                         }
 263
 264                         act->data.any.c = client;
 265                         act->func(&act->data);
 266                     }
 267                 }
 268
 269                 keyboard_reset_chains();
 270             }
 271             break;
 272         }
 273         p = p->next_sibling;
 274     }
 275 }
 276
 277 void keyboard_startup()
 278 {
 279     grab_keys(TRUE);
 280 }
 281
 282 void keyboard_shutdown()
 283 {
 284     tree_destroy(keyboard_firstnode);
 285     keyboard_firstnode = NULL;
 286     grab_keys(FALSE);
 287 }
 288