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)->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     g_assert(action->data.any.interactive);
 137
 138     if (!interactive_states) {
 139         if (!grab_keyboard(TRUE))
 140             return;
 141         if (!grab_pointer(TRUE, OB_CURSOR_NONE)) {
 142             grab_keyboard(FALSE);
 143             return;
 144         }
 145     }
 146
 147     s = g_new(ObInteractiveState, 1);
 148
 149     s->state = state;
 150     s->client = client;
 151     s->action = action;
 152     s->context = context;
 153
 154     interactive_states = g_slist_append(interactive_states, s);
 155 }
 156
 157 gboolean keyboard_process_interactive_grab(const XEvent *e,
 158                                            ObClient **client,
 159                                            ObFrameContext *context)
 160 {
 161     GSList *it, *next;
 162     gboolean handled = FALSE;
 163     gboolean done = FALSE;
 164     gboolean cancel = FALSE;
 165
 166     for (it = interactive_states; it; it = next) {
 167         ObInteractiveState *s = it->data;
 168
 169         next = g_slist_next(it);
 170
 171         *client = s->client;
 172         *context = s->context;
 173
 174         if ((e->type == KeyRelease &&
 175              !(s->state & e->xkey.state)))
 176             done = TRUE;
 177         else if (e->type == KeyPress) {
 178             if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN))
 179                 done = TRUE;
 180             else if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE))
 181                 cancel = done = TRUE;
 182         }
 183         if (done) {
 184             action_run_interactive(s->action, s->client,
 185                                    e->xkey.state, cancel, TRUE);
 186
 187             g_free(s);
 188
 189             interactive_states = g_slist_delete_link(interactive_states, it);
 190             if (!interactive_states) {
 191                 grab_keyboard(FALSE);
 192                 grab_pointer(FALSE, OB_CURSOR_NONE);
 193                 keyboard_reset_chains();
 194             }
 195
 196             handled = TRUE;
 197         }
 198     }
 199
 200     return handled;
 201 }
 202
 203 void keyboard_event(ObClient *client, const XEvent *e)
 204 {
 205     KeyBindingTree *p;
 206
 207     g_assert(e->type == KeyPress);
 208
 209     if (e->xkey.keycode == config_keyboard_reset_keycode &&
 210         e->xkey.state == config_keyboard_reset_state)
 211     {
 212         keyboard_reset_chains();
 213         return;
 214     }
 215
 216     if (curpos == NULL)
 217         p = keyboard_firstnode;
 218     else
 219         p = curpos->first_child;
 220     while (p) {
 221         if (p->key == e->xkey.keycode &&
 222             p->state == e->xkey.state)
 223         {
 224             if (p->first_child != NULL) { /* part of a chain */
 225                 ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
 226                 /* 5 second timeout for chains */
 227                 ob_main_loop_timeout_add(ob_main_loop, 5 * G_USEC_PER_SEC,
 228                                          chain_timeout, NULL, NULL);
 229                 grab_keys(FALSE);
 230                 curpos = p;
 231                 grab_keys(TRUE);
 232             } else {
 233                 GSList *it;
 234
 235                 for (it = p->actions; it; it = it->next)
 236                     action_run_key(it->data, client, e->xkey.state,
 237                                    e->xkey.x_root, e->xkey.y_root);
 238
 239                 keyboard_reset_chains();
 240             }
 241             break;
 242         }
 243         p = p->next_sibling;
 244     }
 245 }
 246
 247 void keyboard_startup(gboolean reconfig)
 248 {
 249     grab_keys(TRUE);
 250 }
 251
 252 void keyboard_shutdown(gboolean reconfig)
 253 {
 254     GSList *it;
 255
 256     tree_destroy(keyboard_firstnode);
 257     keyboard_firstnode = NULL;
 258
 259     for (it = interactive_states; it; it = g_slist_next(it))
 260         g_free(it->data);
 261     g_slist_free(interactive_states);
 262     interactive_states = NULL;
 263
 264     ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
 265     grab_keys(FALSE);
 266     curpos = NULL;
 267 }
 268