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         grab_keys(FALSE);
  77         curpos = NULL;
  78         grab_keys(TRUE);
  79     }
  80 }
  81
  82 gboolean keyboard_bind(GList *keylist, ObAction *action)
  83 {
  84     KeyBindingTree *tree, *t;
  85     gboolean conflict;
  86     gboolean mods = TRUE;
  87
  88     g_assert(keylist != NULL);
  89     g_assert(action != NULL);
  90
  91     if (!(tree = tree_build(keylist)))
  92         return FALSE;
  93
  94     if ((t = tree_find(tree, &conflict)) != NULL) {
  95         /* already bound to something, use the existing tree */
  96         tree_destroy(tree);
  97         tree = NULL;
  98     } else
  99         t = tree;
 100
 101     if (conflict) {
 102         g_warning("conflict with binding");
 103         tree_destroy(tree);
 104         return FALSE;
 105     }
 106
 107     /* find if every key in this chain has modifiers, and also find the
 108        bottom node of the tree */
 109     while (t->first_child) {
 110         if (!t->state)
 111             mods = FALSE;
 112         t = t->first_child;
 113     }
 114
 115     /* when there are no modifiers in the binding, then the action cannot
 116        be interactive */
 117     if (!mods && action->data.any.interactive) {
 118         action->data.any.interactive = FALSE;
 119         action->data.inter.final = TRUE;
 120     }
 121
 122     /* set the action */
 123     t->actions = g_slist_append(t->actions, action);
 124     /* assimilate this built tree into the main tree. assimilation
 125        destroys/uses the tree */
 126     if (tree) tree_assimilate(tree);
 127
 128     return TRUE;
 129 }
 130
 131 void keyboard_interactive_grab(guint state, ObClient *client,
 132                                ObFrameContext context, ObAction *action)
 133 {
 134     ObInteractiveState *s;
 135
 136     if (!interactive_states) {
 137         if (!grab_keyboard(TRUE))
 138             return;
 139         if (!grab_pointer(TRUE, None)) {
 140             grab_keyboard(FALSE);
 141             return;
 142         }
 143     }
 144
 145     s = g_new(ObInteractiveState, 1);
 146
 147     s->state = state;
 148     s->client = client;
 149     s->action = action;
 150     s->context = context;
 151
 152     interactive_states = g_slist_append(interactive_states, s);
 153 }
 154
 155 gboolean keyboard_process_interactive_grab(const XEvent *e,
 156                                            ObClient **client,
 157                                            ObFrameContext *context)
 158 {
 159     GSList *it, *next;
 160     gboolean handled = FALSE;
 161     gboolean done = FALSE;
 162     gboolean cancel = FALSE;
 163
 164     for (it = interactive_states; it; it = next) {
 165         ObInteractiveState *s = it->data;
 166
 167         next = g_slist_next(it);
 168
 169         *client = s->client;
 170         *context = s->context;
 171
 172         if ((e->type == KeyRelease &&
 173              !(s->state & e->xkey.state)))
 174             done = TRUE;
 175         else if (e->type == KeyPress) {
 176             if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN))
 177                 done = TRUE;
 178             else if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE))
 179                 cancel = done = TRUE;
 180         }
 181         if (done) {
 182             g_assert(s->action->data.any.interactive);
 183
 184             s->action->data.inter.cancel = cancel;
 185             s->action->data.inter.final = TRUE;
 186
 187             s->action->func(&s->action->data);
 188
 189             grab_keyboard(FALSE);
 190             grab_pointer(FALSE, None);
 191             keyboard_reset_chains();
 192
 193             g_free(s);
 194             interactive_states = g_slist_delete_link(interactive_states, it);
 195             handled = TRUE;
 196         }
 197     }
 198
 199     return handled;
 200 }
 201
 202 void keyboard_event(ObClient *client, const XEvent *e)
 203 {
 204     KeyBindingTree *p;
 205
 206     g_assert(e->type == KeyPress);
 207
 208     if (e->xkey.keycode == config_keyboard_reset_keycode &&
 209         e->xkey.state == config_keyboard_reset_state)
 210     {
 211         keyboard_reset_chains();
 212         return;
 213     }
 214
 215     if (curpos == NULL)
 216         p = keyboard_firstnode;
 217     else
 218         p = curpos->first_child;
 219     while (p) {
 220         if (p->key == e->xkey.keycode &&
 221             p->state == e->xkey.state) {
 222             if (p->first_child != NULL) { /* part of a chain */
 223                 ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
 224                 /* 5 second timeout for chains */
 225                 ob_main_loop_timeout_add(ob_main_loop, 5 * G_USEC_PER_SEC,
 226                                          chain_timeout, NULL, NULL);
 227                 grab_keys(FALSE);
 228                 curpos = p;
 229                 grab_keys(TRUE);
 230             } else {
 231                 GSList *it;
 232                 for (it = p->actions; it; it = it->next) {
 233                     ObAction *act = it->data;
 234                     if (act->func != NULL) {
 235                         act->data.any.c = client;
 236
 237                         if (act->func == action_moveresize) {
 238                             screen_pointer_pos(&act->data.moveresize.x,
 239                                                &act->data.moveresize.y);
 240                         }
 241
 242                         if (act->data.any.interactive) {
 243                             act->data.inter.cancel = FALSE;
 244                             act->data.inter.final = FALSE;
 245                             keyboard_interactive_grab(e->xkey.state, client,
 246                                                       0, act);
 247                         }
 248
 249                         if (act->func == action_showmenu) {
 250                             act->data.showmenu.x = e->xkey.x_root;
 251                             act->data.showmenu.y = e->xkey.y_root;
 252                         }
 253
 254                         act->data.any.c = client;
 255                         act->func(&act->data);
 256                     }
 257                 }
 258
 259                 keyboard_reset_chains();
 260             }
 261             break;
 262         }
 263         p = p->next_sibling;
 264     }
 265 }
 266
 267 void keyboard_startup()
 268 {
 269     grab_keys(TRUE);
 270 }
 271
 272 void keyboard_shutdown()
 273 {
 274     tree_destroy(keyboard_firstnode);
 275     keyboard_firstnode = NULL;
 276     grab_keys(FALSE);
 277 }
 278