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namespace Caribou {
/**
* Object representing a key in a column.
*
* This is used for implementing custom keyboard service.
*/
public class KeyModel : GLib.Object, IScannableItem, IKeyboardObject {
public string align { get; set; default = "center"; }
public double width { get; set; default = 1.0; }
public string toggle { get; set; default = ""; }
private Gdk.ModifierType mod_mask;
public bool is_modifier {
get {
return (mod_mask != 0);
}
set {}
}
public ModifierState modifier_state;
public bool show_subkeys { get; private set; default = false; }
public string name { get; private set; }
public uint keyval { get; private set; }
public string? text { get; private construct set; default = null; }
private uint[] _keyvals = {};
public string label { get; private set; default = ""; }
public bool scan_stepping { get; internal set; }
private bool _scan_selected;
public bool scan_selected {
get {
return _scan_selected;
}
internal set {
_scan_selected = value;
if (_scan_selected)
activate ();
}
}
private uint hold_tid;
private XAdapter xadapter;
private Gee.ArrayList<KeyModel> extended_keys;
public signal void key_hold_end ();
public signal void key_hold ();
private const ModifierMapEntry mod_map[] = {
{ "Control_L", Gdk.ModifierType.CONTROL_MASK },
{ "Alt_L", Gdk.ModifierType.MOD1_MASK },
{ null, 0 }
};
private const LabelMapEntry label_map[] = {
{ "BackSpace", "\xe2\x8c\xab" },
{ "space", " " },
{ "Return", "\xe2\x8f\x8e" },
{ "Return", "\xe2\x8f\x8e" },
{ "Control_L", "Ctrl" },
{ "Control_R", "Ctrl" },
{ "Alt_L", "Alt" },
{ "Alt_R", "Alt" },
{ "Caribou_Prefs", "\xe2\x8c\xa8" },
{ "Caribou_ShiftUp", "\xe2\xac\x86" },
{ "Caribou_ShiftDown", "\xe2\xac\x87" },
{ "Caribou_Emoticons", "\xe2\x98\xba" },
{ "Caribou_Symbols", "123" },
{ "Caribou_Symbols_More", "{#*" },
{ "Caribou_Alpha", "Abc" },
{ "Caribou_Repeat", "\xe2\x99\xbb" }
};
public KeyModel (string name, string? text = null) {
this.name = name;
this.text = text;
mod_mask = (Gdk.ModifierType) 0;
int i = 0;
for (ModifierMapEntry entry=mod_map[i];
entry.name != null;
entry=mod_map[++i]) {
if (name == entry.name)
mod_mask = entry.mask;
}
if (mod_mask == 0) {
if (text != null) {
int index = 0;
unichar uc;
while (text.get_next_char (ref index, out uc)) {
uint keyval = Gdk.unicode_to_keyval (uc);
if (keyval != uc | 0x01000000)
_keyvals += keyval;
}
} else {
uint keyval = Gdk.keyval_from_name (name);
if (keyval != Gdk.Key.VoidSymbol && keyval != 0)
_keyvals += keyval;
this.keyval = keyval;
}
}
for (i = 0; i < label_map.length; i++) {
if (label_map[i].name == name) {
label = label_map[i].label;
break;
}
}
if (i == label_map.length) {
if (text != null)
label = text;
else if (name.has_prefix ("Caribou_"))
label = name["Caribou_".length:name.length];
else if (_keyvals.length > 0) {
unichar uc = Gdk.keyval_to_unicode (_keyvals[0]);
if (!uc.isspace () && uc != 0)
label = uc.to_string ();
}
}
xadapter = XAdapter.get_default();
extended_keys = new Gee.ArrayList<KeyModel> ();
}
internal void add_subkey (KeyModel key) {
key.key_released.connect(on_subkey_released);
extended_keys.add (key);
}
private void on_subkey_released (KeyModel key) {
key_released (key);
show_subkeys = false;
}
public void press () {
if (is_modifier) {
if (modifier_state == ModifierState.NONE) {
modifier_state = ModifierState.LATCHED;
xadapter.mod_lock(mod_mask);
} else {
modifier_state = ModifierState.NONE;
}
}
hold_tid = GLib.Timeout.add(1000, on_key_held);
key_pressed(this);
}
public void release () {
if (hold_tid != 0)
GLib.Source.remove (hold_tid);
if (is_modifier) {
if (modifier_state == ModifierState.NONE) {
xadapter.mod_unlock(mod_mask);
} else {
return;
}
}
foreach (var keyval in _keyvals) {
xadapter.keyval_press(keyval);
xadapter.keyval_release(keyval);
}
key_released(this);
if (hold_tid != 0) {
key_clicked (this);
hold_tid = 0;
} else {
key_hold_end ();
}
}
private bool on_key_held () {
hold_tid = 0;
if (extended_keys.size != 0)
show_subkeys = true;
if (is_modifier && modifier_state == ModifierState.LATCHED)
modifier_state = ModifierState.LOCKED;
key_hold ();
return false;
}
public KeyModel[] get_extended_keys () {
return (KeyModel[]) extended_keys.to_array ();
}
public KeyModel[] get_keys () {
Gee.ArrayList<KeyModel> all_keys = new Gee.ArrayList<KeyModel> ();
all_keys.add (this);
all_keys.add_all (extended_keys);
return (KeyModel[]) all_keys.to_array ();
}
public IKeyboardObject[] get_children () {
return (IKeyboardObject[]) extended_keys.to_array ();
}
public void activate () {
press ();
GLib.Timeout.add(200, () => { release (); return false; });
}
}
public enum ModifierState {
NONE,
LATCHED,
LOCKED
}
private struct ModifierMapEntry {
string name;
Gdk.ModifierType mask;
}
private struct LabelMapEntry {
string name;
string label;
}
}
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