/*
* Copyright 2013 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*
* Authors: William Hua
*/
public class Indicator.Keyboard.Source : Object {
private static Gnome.XkbInfo? xkb_info;
private static IBus.Bus? ibus_bus;
private static Fcitx.InputMethod? fcitx_proxy;
private string? xkb;
private string? ibus;
private string? fcitx;
private string? _name;
private string? _short_name;
private string? _layout;
private string? _variant;
private Icon? _icon;
private uint _subscript;
private bool _show_subscript;
private bool _use_gtk;
public string? name {
get { if (_name == null) { _name = _get_name (); } return _name; }
}
public string? short_name {
get { if (_short_name == null) { _short_name = _get_short_name (); } return _short_name; }
}
public string? layout {
get { if (_layout == null) { _layout = _get_layout (); } return _layout; }
}
public string? variant {
get { if (_variant == null) { _variant = _get_variant (); } return _variant; }
}
public Icon? icon {
get { if (_icon == null) { _icon = _get_icon (); } return _icon; }
set { _icon = value; }
}
public uint subscript {
get { return _subscript; }
set { _subscript = value; icon = null; }
}
public bool show_subscript {
get { return _show_subscript; }
set { _show_subscript = value; icon = null; }
}
public bool use_gtk {
get { return _use_gtk; }
construct set { _use_gtk = value; icon = null; }
}
public bool is_xkb {
get { return xkb != null; }
}
public bool is_ibus {
get { return ibus != null; }
}
public bool is_fcitx {
get { return fcitx != null; }
}
public Source (Variant variant, bool use_gtk = false) {
Object (use_gtk: use_gtk);
if (variant.is_of_type (new VariantType ("(ss)"))) {
unowned string type;
unowned string name;
variant.get ("(&s&s)", out type, out name);
if (type == "xkb") {
xkb = name;
} else if (type == "ibus") {
ibus = name;
} else if (type == "fcitx") {
fcitx = name;
}
} else if (variant.is_of_type (new VariantType ("a{ss}"))) {
var iter = variant.iterator ();
unowned string key;
unowned string value;
while (iter.next ("{&s&s}", out key, out value)) {
if (key == "xkb") {
xkb = value;
} else if (key == "ibus") {
ibus = value;
} else if (key == "fcitx") {
fcitx = value;
}
}
}
}
private static Gnome.XkbInfo get_xkb_info () {
if (xkb_info == null) {
xkb_info = new Gnome.XkbInfo ();
}
return (!) xkb_info;
}
private static IBus.Bus get_ibus_bus () {
if (ibus_bus == null) {
IBus.init ();
ibus_bus = new IBus.Bus ();
}
return (!) ibus_bus;
}
private static Fcitx.InputMethod get_fcitx_proxy () throws Error {
if (fcitx_proxy == null) {
fcitx_proxy = new Fcitx.InputMethod (BusType.SESSION, DBusProxyFlags.NONE, 0);
}
return (!) fcitx_proxy;
}
private IBus.EngineDesc? get_engine () {
IBus.EngineDesc? engine = null;
if (ibus != null) {
var names = new string[2];
names[0] = (!) ibus;
var engines = get_ibus_bus ().get_engines_by_names (names);
if (engines.length > 0) {
engine = engines[0];
}
}
return engine;
}
protected virtual string? _get_name () {
string? name = null;
if (xkb != null) {
string? display_name = null;
string? layout = null;
get_xkb_info ().get_layout_info ((!) xkb, out display_name, null, out layout, null);
var has_display_name = display_name != null && ((!) display_name).get_char () != '\0';
var has_layout = layout != null && ((!) layout).get_char () != '\0';
if (has_display_name) {
name = display_name;
} else if (has_layout) {
string? language = Xkl.get_language_name ((!) layout);
string? country = Xkl.get_country_name ((!) layout);
var has_language = language != null && ((!) language).get_char () != '\0';
var has_country = country != null && ((!) country).get_char () != '\0';
if (has_language && has_country) {
name = @"$((!) language) ($((!) country))";
} else if (has_language) {
name = language;
} else if (has_country) {
name = country;
}
}
if (name == null || ((!) name).get_char () == '\0') {
name = xkb;
}
} else if (ibus != null) {
var engine = get_engine ();
if (engine != null) {
string? language = ((!) engine).get_language ();
string? display_name = ((!) engine).get_longname ();
var has_language = language != null && ((!) language).get_char () != '\0';
var has_display_name = display_name != null && ((!) display_name).get_char () != '\0';
if (has_language) {
language = Xkl.get_language_name ((!) language);
has_language = language != null && ((!) language).get_char () != '\0';
}
if (has_language && has_display_name) {
name = @"$((!) language) ($((!) display_name))";
} else if (has_language) {
name = language;
} else if (has_display_name) {
name = display_name;
}
}
if (name == null || ((!) name).get_char () == '\0') {
name = ibus;
}
} else if (fcitx != null) {
try {
var input_methods = get_fcitx_proxy ().get_imlist_nofree ();
for (var i = 0; i < input_methods.length; i++) {
if (input_methods.get (i).unique_name == (!) fcitx) {
name = input_methods.get (i).name;
break;
}
}
} catch (Error error) {
warning ("error: %s", error.message);
}
if (name == null || ((!) name).get_char () == '\0') {
name = fcitx;
}
}
return name;
}
protected virtual string? _get_short_name () {
string? short_name = null;
if (xkb != null) {
get_xkb_info ().get_layout_info ((!) xkb, null, out short_name, null, null);
if (short_name == null || ((!) short_name).get_char () == '\0') {
short_name = xkb;
}
} else if (ibus != null) {
var engine = get_engine ();
if (engine != null) {
short_name = ((!) engine).get_name ();
}
if (short_name == null || ((!) short_name).get_char () == '\0') {
short_name = ibus;
}
} else if (fcitx != null) {
try {
var input_methods = get_fcitx_proxy ().get_imlist_nofree ();
for (var i = 0; i < input_methods.length; i++) {
if (input_methods.get (i).unique_name == (!) fcitx) {
short_name = input_methods.get (i).langcode;
break;
}
}
} catch (Error error) {
warning ("error: %s", error.message);
}
if (short_name == null || ((!) short_name).get_char () == '\0') {
short_name = fcitx;
}
}
return abbreviate (short_name);
}
protected virtual string? _get_layout () {
string? layout = null;
if (xkb != null) {
get_xkb_info ().get_layout_info ((!) xkb, null, null, out layout, null);
}
var has_layout = layout != null && ((!) layout).get_char () != '\0';
if (!has_layout) {
var engine = get_engine ();
if (engine != null) {
layout = ((!) engine).get_layout ();
}
}
if (layout == null || ((!) layout).get_char () == '\0') {
layout = xkb;
}
return layout;
}
protected virtual string? _get_variant () {
string? variant = null;
if (xkb != null) {
get_xkb_info ().get_layout_info ((!) xkb, null, null, null, out variant);
}
var has_variant = variant != null && ((!) variant).get_char () != '\0';
if (!has_variant) {
var engine = get_engine ();
if (engine != null) {
variant = ((!) engine).get_layout_variant ();
}
}
if (variant == null || ((!) variant).get_char () == '\0') {
variant = null;
}
return variant;
}
private Gtk.StyleContext? get_style_context () {
Gtk.StyleContext? context = null;
if (_use_gtk) {
Gdk.Screen? screen = Gdk.Screen.get_default ();
if (screen != null) {
var style_context = new Gtk.StyleContext ();
style_context.set_screen ((!) screen);
var path = new Gtk.WidgetPath ();
path.append_type (typeof (Gtk.MenuItem));
style_context.set_path (path);
context = style_context;
}
}
return context;
}
protected virtual Icon? create_icon () {
Icon? icon = null;
var style = get_style_context ();
if (style != null) {
const int W = 22;
const int H = 22;
const int w = 20;
const int h = 20;
const double R = 2.0;
const double TEXT_SIZE = 12.0;
const double SUBSCRIPT_SIZE = 8.0;
Pango.FontDescription description;
var colour = ((!) style).get_color (Gtk.StateFlags.NORMAL);
colour = { 0.5, 0.5, 0.5, 1.0 };
((!) style).get (Gtk.StateFlags.NORMAL, Gtk.STYLE_PROPERTY_FONT, out description);
var surface = new Cairo.ImageSurface (Cairo.Format.ARGB32, W, H);
var context = new Cairo.Context (surface);
context.translate (0.5 * (W - w), 0.5 * (H - h));
context.new_sub_path ();
context.arc (R, R, R, Math.PI, -0.5 * Math.PI);
context.arc (w - R, R, R, -0.5 * Math.PI, 0);
context.arc (w - R, h - R, R, 0, 0.5 * Math.PI);
context.arc (R, h - R, R, 0.5 * Math.PI, Math.PI);
context.close_path ();
context.set_source_rgba (colour.red, colour.green, colour.blue, colour.alpha);
context.fill ();
context.set_operator (Cairo.Operator.CLEAR);
if (short_name != null) {
var text_layout = Pango.cairo_create_layout (context);
text_layout.set_alignment (Pango.Alignment.CENTER);
description.set_absolute_size (Pango.units_from_double (TEXT_SIZE));
text_layout.set_font_description (description);
text_layout.set_text ((!) short_name, -1);
Pango.cairo_update_layout (context, text_layout);
int text_width;
int text_height;
text_layout.get_pixel_size (out text_width, out text_height);
if (_show_subscript) {
var subscript_layout = Pango.cairo_create_layout (context);
subscript_layout.set_alignment (Pango.Alignment.CENTER);
description.set_absolute_size (Pango.units_from_double (SUBSCRIPT_SIZE));
subscript_layout.set_font_description (description);
subscript_layout.set_text (@"$_subscript", -1);
Pango.cairo_update_layout (context, subscript_layout);
int subscript_width;
int subscript_height;
subscript_layout.get_pixel_size (out subscript_width, out subscript_height);
context.save ();
context.translate ((w - (text_width + subscript_width)) / 2, (h - text_height) / 2);
Pango.cairo_layout_path (context, text_layout);
context.fill ();
context.restore ();
context.save ();
context.translate ((w + (text_width - subscript_width)) / 2, (h + text_height) / 2 - subscript_height);
Pango.cairo_layout_path (context, subscript_layout);
context.fill ();
context.restore ();
} else {
context.save ();
context.translate ((w - text_width) / 2, (h - text_height) / 2);
Pango.cairo_layout_path (context, text_layout);
context.fill ();
context.restore ();
}
}
var buffer = new ByteArray ();
surface.write_to_png_stream ((data) => {
buffer.append (data);
return Cairo.Status.SUCCESS;
});
icon = new BytesIcon (ByteArray.free_to_bytes ((owned) buffer));
}
return icon;
}
private Icon? _get_icon () {
Icon? icon = null;
var engine = get_engine ();
if (engine != null) {
string? icon_name = ((!) engine).get_icon ();
var has_icon_name = icon_name != null && ((!) icon_name).get_char () != '\0';
if (has_icon_name) {
try {
icon = Icon.new_for_string ((!) icon_name);
} catch (Error error) {
warning ("error: %s", error.message);
}
}
}
if (icon == null && short_name != null) {
string icon_name;
if (_show_subscript) {
icon_name = @"indicator-keyboard-$((!) short_name)-$_subscript";
} else {
icon_name = @"indicator-keyboard-$((!) short_name)";
}
if (_use_gtk) {
var icon_theme = Gtk.IconTheme.get_default ();
Gtk.IconInfo? icon_info = icon_theme.lookup_icon (icon_name, 22, 0);
if (icon_info != null) {
icon = new ThemedIcon (icon_name);
}
} else {
icon = new ThemedIcon (icon_name);
}
}
if (icon == null) {
icon = create_icon ();
}
return icon;
}
}