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
  87     g_assert(keylist != NULL);
  88     g_assert(action != NULL);
  89
  90     if (!(tree = tree_build(keylist)))
  91         return FALSE;
  92
  93     if ((t = tree_find(tree, &conflict)) != NULL) {
  94         /* already bound to something, use the existing tree */
  95         tree_destroy(tree);
  96         tree = NULL;
  97     } else
  98         t = tree;
  99     while (t->first_child) t = t->first_child;
 100
 101     if (conflict) {
 102         g_warning("conflict with binding");
 103         tree_destroy(tree);
 104         return FALSE;
 105     }
 106
 107     /* set the action */
 108     t->actions = g_slist_append(t->actions, action);
 109     /* assimilate this built tree into the main tree. assimilation
 110        destroys/uses the tree */
 111     if (tree) tree_assimilate(tree);
 112
 113     return TRUE;
 114 }
 115
 116 void keyboard_interactive_grab(guint state, ObClient *client,
 117                                ObFrameContext context, ObAction *action)
 118 {
 119     ObInteractiveState *s;
 120
 121     if (!interactive_states) {
 122         if (!grab_keyboard(TRUE))
 123             return;
 124         if (!grab_pointer(TRUE, None)) {
 125             grab_keyboard(FALSE);
 126             return;
 127         }
 128     }
 129
 130     s = g_new(ObInteractiveState, 1);
 131
 132     s->state = state;
 133     s->client = client;
 134     s->action = action;
 135     s->context = context;
 136
 137     interactive_states = g_slist_append(interactive_states, s);
 138 }
 139
 140 gboolean keyboard_process_interactive_grab(const XEvent *e,
 141                                            ObClient **client,
 142                                            ObFrameContext *context)
 143 {
 144     GSList *it, *next;
 145     gboolean handled = FALSE;
 146     gboolean done = FALSE;
 147     gboolean cancel = FALSE;
 148
 149     for (it = interactive_states; it; it = next) {
 150         ObInteractiveState *s = it->data;
 151
 152         next = g_slist_next(it);
 153
 154         *client = s->client;
 155         *context = s->context;
 156
 157         if ((e->type == KeyRelease &&
 158              !(s->state & e->xkey.state)))
 159             done = TRUE;
 160         else if (e->type == KeyPress) {
 161             if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN))
 162                 done = TRUE;
 163             else if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE))
 164                 cancel = done = TRUE;
 165         }
 166         if (done) {
 167             g_assert(s->action->data.any.interactive);
 168
 169             s->action->data.inter.cancel = cancel;
 170             s->action->data.inter.final = TRUE;
 171
 172             s->action->func(&s->action->data);
 173
 174             grab_keyboard(FALSE);
 175             grab_pointer(FALSE, None);
 176             keyboard_reset_chains();
 177
 178             g_free(s);
 179             interactive_states = g_slist_delete_link(interactive_states, it);
 180             handled = TRUE;
 181         }
 182     }
 183
 184     return handled;
 185 }
 186
 187 void keyboard_event(ObClient *client, const XEvent *e)
 188 {
 189     KeyBindingTree *p;
 190
 191     g_assert(e->type == KeyPress);
 192
 193     if (e->xkey.keycode == config_keyboard_reset_keycode &&
 194         e->xkey.state == config_keyboard_reset_state)
 195     {
 196         keyboard_reset_chains();
 197         return;
 198     }
 199
 200     if (curpos == NULL)
 201         p = keyboard_firstnode;
 202     else
 203         p = curpos->first_child;
 204     while (p) {
 205         if (p->key == e->xkey.keycode &&
 206             p->state == e->xkey.state) {
 207             if (p->first_child != NULL) { /* part of a chain */
 208                 ob_main_loop_timeout_remove(ob_main_loop, chain_timeout);
 209                 /* 5 second timeout for chains */
 210                 ob_main_loop_timeout_add(ob_main_loop, 5 * G_USEC_PER_SEC,
 211                                          chain_timeout, NULL, NULL);
 212                 grab_keys(FALSE);
 213                 curpos = p;
 214                 grab_keys(TRUE);
 215             } else {
 216                 GSList *it;
 217                 for (it = p->actions; it; it = it->next) {
 218                     ObAction *act = it->data;
 219                     if (act->func != NULL) {
 220                         act->data.any.c = client;
 221
 222                         if (act->func == action_moveresize) {
 223                             screen_pointer_pos(&act->data.moveresize.x,
 224                                                &act->data.moveresize.y);
 225                         }
 226
 227                         if (act->data.any.interactive) {
 228                             act->data.inter.cancel = FALSE;
 229                             act->data.inter.final = FALSE;
 230                             keyboard_interactive_grab(e->xkey.state, client,
 231                                                       0, act);
 232                         }
 233
 234                         if (act->func == action_showmenu) {
 235                             act->data.showmenu.x = e->xkey.x_root;
 236                             act->data.showmenu.y = e->xkey.y_root;
 237                         }
 238
 239                         act->data.any.c = client;
 240                         act->func(&act->data);
 241                     }
 242                 }
 243
 244                 keyboard_reset_chains();
 245             }
 246             break;
 247         }
 248         p = p->next_sibling;
 249     }
 250 }
 251
 252 void keyboard_startup()
 253 {
 254     grab_keys(TRUE);
 255 }
 256
 257 void keyboard_shutdown()
 258 {
 259     tree_destroy(keyboard_firstnode);
 260     keyboard_firstnode = NULL;
 261     grab_keys(FALSE);
 262 }
 263