diff options
Diffstat (limited to 'libcaribou/xadapter.vala')
| -rw-r--r-- | libcaribou/xadapter.vala | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/libcaribou/xadapter.vala b/libcaribou/xadapter.vala index 62ec4cc..7f9cf46 100644 --- a/libcaribou/xadapter.vala +++ b/libcaribou/xadapter.vala @@ -42,6 +42,7 @@ namespace Caribou { this.xkbdesc = Xkb.get_keyboard (this.xdisplay, Xkb.GBN_AllComponentsMask, Xkb.UseCoreKbd); + this.base_desc = get_xkb_desc_for_group ("us", ""); this.xkl_engine = Xkl.Engine.get_instance (this.xdisplay); xkl_engine.start_listen (Xkl.EngineListenModes.TRACK_KEYBOARD_STATE); xkl_state = this.xkl_engine.get_current_state (); @@ -347,5 +348,124 @@ namespace Caribou { } } + /* Fallback code to support multilingual keyboard layouts. + * When XmlDeserializer couldn't find XML file, try to read + * symbols from XKB files (which normally located in + * /usr/share/X11/xkb/rules) and replace symbols in the base + * (i.e. "us") layout. */ + Xkb.Desc base_desc; + + static const string XKB_MODEL = "pc105+inet"; + static const string XKB_LAYOUT = "us"; + static const string XKB_RULES_FILE = "evdev"; + + public GroupModel? load_group (GroupModel base_group, + string group_name, + string variant_name) { + + var desc = get_xkb_desc_for_group (group_name, variant_name); + var group = new GroupModel (group_name, variant_name); + populate_keys_in_group (base_group, desc, group); + return group; + } + + void populate_keys_in_group (GroupModel base_group, + Xkb.Desc desc, + GroupModel group) + { + var base_lnames = base_group.get_levels (); + foreach (var base_lname in base_lnames) { + var base_level = base_group.get_level (base_lname); + var level = new LevelModel (base_level.mode); + group.add_level (base_lname, level); + + var base_rows = base_level.get_rows (); + foreach (var base_row in base_rows) { + var row = new RowModel (); + level.add_row (row); + + var base_columns = base_row.get_columns (); + foreach (var base_column in base_columns) { + var column = new ColumnModel (); + row.add_column (column); + + var base_keys = (KeyModel[])base_column.get_children (); + foreach (var base_key in base_keys) { + uint keyval = translate_keyval_in_desc ( + desc, base_key.keyval); + var key = new KeyModel (base_key.name, + null, + keyval); + key.align = base_key.align; + key.toggle = base_key.toggle; + key.width = base_key.width; + column.add_key (key); + } + } + } + } + } + + uint translate_keyval_in_desc (Xkb.Desc desc, uint base_keyval) { + if (base_keyval == Gdk.Key.VoidSymbol) + return Gdk.Key.VoidSymbol; + for (int i = base_desc.min_key_code; i <= base_desc.max_key_code; i++) { + unowned Xkb.SymMap base_symmap = base_desc.map.key_sym_map[i]; + for (int j = 0; j < base_symmap.width; j++) { + if (base_desc.map.syms[base_symmap.offset + j] == base_keyval) { + unowned Xkb.SymMap symmap = desc.map.key_sym_map[i]; + return (uint) desc.map.syms[symmap.offset + j]; + } + } + } + return Gdk.Key.VoidSymbol; + } + + Xkb.Desc get_xkb_desc_for_group (string group_name, + string variant_name) + { + XkbRF.VarDefs var_defs = XkbRF.VarDefs (); + string rules_file_path = get_xkb_rules_file (ref var_defs); + + XkbRF.Rules? rules = XkbRF.load (rules_file_path, null, true, true); + if (rules == null) { + warning ("can't load XKB rules from %s", + rules_file_path); + return null; + } + + var_defs.model = XKB_MODEL; + var_defs.layout = group_name; + var_defs.variant = variant_name; + var_defs.options = null; + + Xkb.ComponentNames names = Xkb.ComponentNames (); + if (!XkbRF.get_components (rules, var_defs, ref names)) { + warning ("can't resolve XKB component names for %s %s", + group_name, variant_name); + return null; + } + + return Xkb.get_keyboard_by_name (this.xdisplay, + Xkb.UseCoreKbd, + names, + 0, + Xkb.GBN_AllComponentsMask, + false); + } + + string get_xkb_rules_file (ref XkbRF.VarDefs var_defs) { + string rules; + if (!XkbRF.get_names_prop (this.xdisplay, + out rules, + ref var_defs)) { + rules = XKB_RULES_FILE; + var_defs.model = XKB_MODEL; + var_defs.layout = XKB_LAYOUT; + var_defs.variant = null; + var_defs.options = null; + } + return Path.build_filename (Config.XKB_BASE, "rules", rules, null); + } } } |