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panel.vala
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panel.vala
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/* vim:set et sts=4 sw=4:
*
* ibus - The Input Bus
*
* Copyright(c) 2011-2014 Peng Huang <shawn.p.huang@gmail.com>
* Copyright(c) 2015-2019 Takao Fujwiara <takao.fujiwara1@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*/
class Panel : IBus.PanelService {
private enum IconType {
STATUS_ICON,
INDICATOR,
}
private IBus.Bus m_bus;
private GLib.Settings m_settings_general = null;
private GLib.Settings m_settings_hotkey = null;
private GLib.Settings m_settings_panel = null;
private IconType m_icon_type = IconType.STATUS_ICON;
private Indicator m_indicator;
#if INDICATOR
private GLib.DBusConnection m_session_bus_connection;
#endif
private Gtk.StatusIcon m_status_icon;
private Gtk.Menu m_ime_menu;
private Gtk.Menu m_sys_menu;
private IBus.EngineDesc[] m_engines = {};
private GLib.HashTable<string, IBus.EngineDesc> m_engine_contexts =
new GLib.HashTable<string, IBus.EngineDesc>(GLib.str_hash,
GLib.str_equal);
private string m_current_context_path = "";
private string m_real_current_context_path = "";
private bool m_use_global_engine = true;
private CandidatePanel m_candidate_panel;
private Switcher m_switcher;
private uint m_switcher_focus_set_engine_id;
private PropertyManager m_property_manager;
private PropertyPanel m_property_panel;
private GLib.Pid m_setup_pid = 0;
private Gtk.AboutDialog m_about_dialog;
private Gtk.CssProvider m_css_provider;
private int m_switcher_delay_time = 400;
private bool m_use_system_keyboard_layout = false;
private GLib.HashTable<string, Gdk.Pixbuf> m_xkb_icon_pixbufs =
new GLib.HashTable<string, Gdk.Pixbuf>(GLib.str_hash,
GLib.str_equal);
private GLib.HashTable<string, Cairo.ImageSurface> m_xkb_icon_image =
new GLib.HashTable<string, Cairo.ImageSurface>(GLib.str_hash,
GLib.str_equal);
private Gdk.RGBA m_xkb_icon_rgba = Gdk.RGBA(){
red = 0.0, green = 0.0, blue = 0.0, alpha = 1.0 };
private XKBLayout m_xkblayout = new XKBLayout();
private bool inited_engines_order = true;
private uint m_preload_engines_id;
private const uint PRELOAD_ENGINES_DELAY_TIME = 30000;
private string m_icon_prop_key = "";
private int m_property_icon_delay_time = 500;
private uint m_property_icon_delay_time_id;
#if INDICATOR
private bool m_is_kde = is_kde();
#else
private bool m_is_kde = false;
#endif
private ulong m_popup_menu_id;
private ulong m_activate_id;
private ulong m_registered_status_notifier_item_id;
private GLib.List<BindingCommon.Keybinding> m_keybindings =
new GLib.List<BindingCommon.Keybinding>();
public Panel(IBus.Bus bus) {
GLib.assert(bus.is_connected());
// Chain up base class constructor
GLib.Object(connection : bus.get_connection(),
object_path : "/org/freedesktop/IBus/Panel");
m_bus = bus;
init_settings();
// init ui
#if INDICATOR
if (m_is_kde) {
init_indicator();
} else {
init_status_icon();
}
#else
init_status_icon();
#endif
m_candidate_panel = new CandidatePanel();
m_candidate_panel.page_up.connect((w) => this.page_up());
m_candidate_panel.page_down.connect((w) => this.page_down());
m_candidate_panel.cursor_up.connect((w) => this.cursor_up());
m_candidate_panel.cursor_down.connect((w) => this.cursor_down());
m_candidate_panel.candidate_clicked.connect(
(w, i, b, s) => this.candidate_clicked(i, b, s));
m_switcher = new Switcher();
// The initial shortcut is "<Super>space"
bind_switch_shortcut();
if (m_switcher_delay_time >= 0) {
m_switcher.set_popup_delay_time((uint) m_switcher_delay_time);
}
m_property_manager = new PropertyManager();
m_property_manager.property_activate.connect((w, k, s) => {
property_activate(k, s);
});
m_property_panel = new PropertyPanel();
m_property_panel.property_activate.connect((w, k, s) => {
property_activate(k, s);
});
state_changed();
}
~Panel() {
#if INDICATOR
// unref m_indicator
if (m_indicator != null)
m_indicator.unregister_connection();
#endif
BindingCommon.unbind_switch_shortcut(
BindingCommon.KeyEventFuncType.ANY, m_keybindings);
m_keybindings = null;
}
private void init_settings() {
m_settings_general = new GLib.Settings("org.freedesktop.ibus.general");
m_settings_hotkey =
new GLib.Settings("org.freedesktop.ibus.general.hotkey");
m_settings_panel = new GLib.Settings("org.freedesktop.ibus.panel");
m_settings_general.changed["preload-engines"].connect((key) => {
update_engines(m_settings_general.get_strv(key),
null);
});
m_settings_general.changed["switcher-delay-time"].connect((key) => {
set_switcher_delay_time();
});
m_settings_general.changed["use-system-keyboard-layout"].connect(
(key) => {
set_use_system_keyboard_layout();
});
m_settings_general.changed["embed-preedit-text"].connect((key) => {
set_embed_preedit_text();
});
m_settings_general.changed["use-global-engine"].connect((key) => {
set_use_global_engine();
});
m_settings_general.changed["use-xmodmap"].connect((key) => {
set_use_xmodmap();
});
m_settings_hotkey.changed["triggers"].connect((key) => {
BindingCommon.unbind_switch_shortcut(
BindingCommon.KeyEventFuncType.IME_SWITCHER,
m_keybindings);
m_keybindings = null;
bind_switch_shortcut();
});
m_settings_panel.changed["custom-font"].connect((key) => {
BindingCommon.set_custom_font(m_settings_panel,
null,
ref m_css_provider);
});
m_settings_panel.changed["use-custom-font"].connect((key) => {
BindingCommon.set_custom_font(m_settings_panel,
null,
ref m_css_provider);
});
m_settings_panel.changed["show-icon-on-systray"].connect((key) => {
set_show_icon_on_systray();
});
m_settings_panel.changed["lookup-table-orientation"].connect((key) => {
set_lookup_table_orientation();
});
m_settings_panel.changed["show"].connect((key) => {
set_show_property_panel();
});
m_settings_panel.changed["timeout"].connect((key) => {
set_timeout_property_panel();
});
m_settings_panel.changed["follow-input-cursor-when-always-shown"]
.connect((key) => {
set_follow_input_cursor_when_always_shown_property_panel();
});
m_settings_panel.changed["xkb-icon-rgba"].connect((key) => {
set_xkb_icon_rgba();
});
m_settings_panel.changed["property-icon-delay-time"].connect((key) => {
set_property_icon_delay_time();
});
}
private void popup_menu_at_area_window(Gtk.Menu menu,
Gdk.Rectangle area,
Gdk.Window? window,
Gtk.MenuPositionFunc? func) {
#if VALA_0_34
Gdk.Gravity rect_anchor = Gdk.Gravity.SOUTH_WEST;
Gdk.Gravity menu_anchor = Gdk.Gravity.NORTH_WEST;
// Gtk.Menu.popup() is now deprecated but
// Gtk.Menu.popup_at_rect() requires a Gdk.Window and
// Gtk.Menu.popup_at_rect() outputs a warning of
// "no trigger event for menu popup"
// for the foreigner QT window which is generated by
// Gdk.X11.Window.foreign_for_display.
// https://git.gnome.org/browse/gtk+/tree/gtk/gtkmenu.c?h=gtk-3-22#n2251
menu.popup_at_rect(window, area, rect_anchor, menu_anchor, null);
#else
menu.popup(null, null, func, 0, Gtk.get_current_event_time());
#endif
}
#if INDICATOR
private static bool is_kde() {
if (Environment.get_variable("XDG_CURRENT_DESKTOP") == "KDE")
return true;
warning ("If you launch KDE5 on xterm, " +
"export XDG_CURRENT_DESKTOP=KDE before launch KDE5.");
return false;
}
private void popup_menu_at_pointer_window(Gtk.Menu menu,
int x,
int y,
Gdk.Window? window,
Gtk.MenuPositionFunc? func) {
int win_x = 0;
int win_y = 0;
window.get_origin(out win_x, out win_y);
Gdk.Rectangle area = { x - win_x, y - win_y, 1, 1 };
// window is a bottom wide panel instead of status icon
popup_menu_at_area_window(menu, area, window, func);
}
private void init_indicator() {
m_icon_type = IconType.INDICATOR;
GLib.Bus.get.begin(GLib.BusType.SESSION, null, (obj, res) => {
try {
m_session_bus_connection = GLib.Bus.get.end(res);
m_indicator =
new Indicator("ibus-ui-gtk3",
m_session_bus_connection,
Indicator.Category.APPLICATION_STATUS);
m_indicator.title = _("IBus Panel");
m_registered_status_notifier_item_id =
m_indicator.registered_status_notifier_item.connect(
() => {
m_indicator.set_status(Indicator.Status.ACTIVE);
state_changed();
});
m_popup_menu_id =
m_indicator.context_menu.connect((x, y, w, b, t) => {
popup_menu_at_pointer_window(
create_context_menu(),
x, y, w,
m_indicator.position_context_menu);
});
m_activate_id =
m_indicator.activate.connect((x, y, w) => {
popup_menu_at_pointer_window(
create_activate_menu(),
x, y, w,
m_indicator.position_activate_menu);
});
} catch (GLib.IOError e) {
warning("Failed to get the session bus: %s", e.message);
}
});
}
#endif
private void init_status_icon() {
m_status_icon = new Gtk.StatusIcon();
m_status_icon.set_name("ibus-ui-gtk");
m_status_icon.set_title(_("IBus Panel"));
// Gdk.Window.get_width() is needed for the menu position
if (m_status_icon.get_size() > 0)
init_status_icon_menu();
else
m_status_icon.notify["size"].connect(init_status_icon_menu);
}
private void init_status_icon_menu() {
Gdk.Rectangle area = { 0, 0, 0, 0 };
Gdk.Window? window = null;
Gtk.MenuPositionFunc? func = null;
#if VALA_0_34
window = Gdk.X11.Window.lookup_for_display(
Gdk.Display.get_default() as Gdk.X11.Display,
m_status_icon.get_x11_window_id()) as Gdk.Window;
if (window == null) {
warning("StatusIcon does not have GdkWindow");
return;
}
Gtk.Orientation orient;
m_status_icon.get_geometry(null, out area, out orient);
int win_x = 0;
int win_y = 0;
window.get_origin(out win_x, out win_y);
// The (x, y) is converted by gdk_window_get_root_coords()
// in gdk_window_impl_move_to_rect()
area.x -= win_x;
area.y -= win_y;
#else
func = m_status_icon.position_menu;
#endif
m_popup_menu_id = m_status_icon.popup_menu.connect((b, t) => {
popup_menu_at_area_window(
create_context_menu(),
area, window, func);
});
m_activate_id = m_status_icon.activate.connect(() => {
popup_menu_at_area_window(
create_activate_menu(),
area, window, func);
});
m_status_icon.set_from_icon_name("ibus-keyboard");
}
private void bind_switch_shortcut() {
string[] accelerators = m_settings_hotkey.get_strv("triggers");
var keybinding_manager = KeybindingManager.get_instance();
foreach (var accelerator in accelerators) {
BindingCommon.keybinding_manager_bind(
keybinding_manager,
ref m_keybindings,
accelerator,
BindingCommon.KeyEventFuncType.IME_SWITCHER,
handle_engine_switch_normal,
handle_engine_switch_reverse);
}
}
/*
public static void
unbind_switch_shortcut(KeyEventFuncType ftype,
GLib.List<Keybinding> keybindings) {
var keybinding_manager = KeybindingManager.get_instance();
while (keybindings != null) {
Keybinding keybinding = keybindings.data;
if (ftype == KeyEventFuncType.ANY ||
ftype == keybinding.ftype) {
keybinding_manager.unbind(keybinding.keysym,
keybinding.modifiers);
}
keybindings = keybindings.next;
}
}
*/
/**
* panel_get_engines_from_xkb:
* @self: #Panel class
* @engines: all engines from ibus_bus_list_engines()
* @returns: ibus xkb engines
*
* Made ibus engines from the current XKB keymaps.
* This returns only XKB engines whose name start with "xkb:".
*/
private GLib.List<IBus.EngineDesc>
get_engines_from_xkb(GLib.List<IBus.EngineDesc> engines) {
string layouts;
string variants;
string option;
XKBLayout.get_layout(out layouts, out variants, out option);
GLib.List<IBus.EngineDesc> xkb_engines =
new GLib.List<IBus.EngineDesc>();
IBus.EngineDesc us_engine =
new IBus.EngineDesc("xkb:us::eng",
"", "", "", "", "", "", "");
string[] layout_array = layouts.split(",");
string[] variant_array = variants.split(",");
for (int i = 0; i < layout_array.length; i++) {
string layout = layout_array[i];
string variant = null;
IBus.EngineDesc current_engine = null;
if (i < variant_array.length)
variant = variant_array[i];
/* If variants == "", variants.split(",") is { null }.
* To meet engine.get_layout_variant(), convert null to ""
* here.
*/
if (variant == null)
variant = "";
foreach (unowned IBus.EngineDesc engine in engines) {
string name = engine.get_name();
if (!name.has_prefix("xkb:"))
continue;
if (engine.get_layout() == layout &&
engine.get_layout_variant() == variant) {
current_engine = engine;
break;
}
}
if (current_engine != null) {
xkb_engines.append(current_engine);
} else if (xkb_engines.find(us_engine) == null) {
warning("Fallback %s(%s) to us layout.", layout, variant);
xkb_engines.append(us_engine);
}
}
if (xkb_engines.length() == 0)
warning("Not found IBus XKB engines from the session.");
return xkb_engines;
}
/**
* panel_get_engines_from_locale:
* @self: #Panel class
* @engines: all engines from ibus_bus_list_engines()
* @returns: ibus im engines
*
* Made ibus engines from the current locale and IBus.EngineDesc.lang .
* This returns non-XKB engines whose name does not start "xkb:".
*/
private GLib.List<IBus.EngineDesc>
get_engines_from_locale(GLib.List<IBus.EngineDesc> engines) {
string locale = Intl.setlocale(LocaleCategory.CTYPE, null);
if (locale == null)
locale = "C";
string lang = locale.split(".")[0];
GLib.List<IBus.EngineDesc> im_engines =
new GLib.List<IBus.EngineDesc>();
foreach (unowned IBus.EngineDesc engine in engines) {
string name = engine.get_name();
if (name.has_prefix("xkb:"))
continue;
if (engine.get_language() == lang &&
engine.get_rank() > 0)
im_engines.append(engine);
}
if (im_engines.length() == 0) {
lang = lang.split("_")[0];
foreach (unowned IBus.EngineDesc engine in engines) {
string name = engine.get_name();
if (name.has_prefix("xkb:"))
continue;
if (engine.get_language() == lang &&
engine.get_rank() > 0)
im_engines.append(engine);
}
}
if (im_engines.length() == 0)
return im_engines;
im_engines.sort((a, b) => {
return (int) b.get_rank() - (int) a.get_rank();
});
return im_engines;
}
private void init_engines_order() {
m_xkblayout.set_latin_layouts(
m_settings_general.get_strv("xkb-latin-layouts"));
if (inited_engines_order)
return;
if (m_settings_general.get_strv("preload-engines").length > 0)
return;
GLib.List<IBus.EngineDesc> engines = m_bus.list_engines();
GLib.List<IBus.EngineDesc> xkb_engines = get_engines_from_xkb(engines);
GLib.List<IBus.EngineDesc> im_engines =
get_engines_from_locale(engines);
string[] names = {};
foreach (unowned IBus.EngineDesc engine in xkb_engines)
names += engine.get_name();
foreach (unowned IBus.EngineDesc engine in im_engines)
names += engine.get_name();
m_settings_general.set_strv("preload-engines", names);
}
private void set_switcher_delay_time() {
m_switcher_delay_time =
m_settings_general.get_int("switcher-delay-time");
if (m_switcher != null && m_switcher_delay_time >= 0) {
m_switcher.set_popup_delay_time((uint) m_switcher_delay_time);
}
}
private void set_use_system_keyboard_layout() {
m_use_system_keyboard_layout =
m_settings_general.get_boolean("use-system-keyboard-layout");
}
private void set_embed_preedit_text() {
Variant variant =
m_settings_general.get_value("embed-preedit-text");
if (variant == null) {
return;
}
m_bus.set_ibus_property("EmbedPreeditText", variant);
}
private void set_use_global_engine() {
m_use_global_engine =
m_settings_general.get_boolean("use-global-engine");
}
private void set_use_xmodmap() {
m_xkblayout.set_use_xmodmap(
m_settings_general.get_boolean("use-xmodmap"));
}
private void set_show_icon_on_systray() {
if (m_icon_type == IconType.STATUS_ICON) {
if (m_status_icon == null)
return;
m_status_icon.set_visible(
m_settings_panel.get_boolean("show-icon-on-systray"));
} else if (m_icon_type == IconType.INDICATOR) {
if (m_indicator == null)
return;
if (m_settings_panel.get_boolean("show-icon-on-systray")) {
m_indicator.set_status(Indicator.Status.ACTIVE);
} else {
m_indicator.set_status(Indicator.Status.PASSIVE);
}
}
}
private void set_lookup_table_orientation() {
if (m_candidate_panel == null)
return;
m_candidate_panel.set_vertical(
m_settings_panel.get_int("lookup-table-orientation")
== IBus.Orientation.VERTICAL);
}
private void set_show_property_panel() {
if (m_property_panel == null)
return;
m_property_panel.set_show(m_settings_panel.get_int("show"));
}
private void set_timeout_property_panel() {
if (m_property_panel == null)
return;
m_property_panel.set_auto_hide_timeout(
(uint) m_settings_panel.get_int("auto-hide-timeout"));
}
private void set_follow_input_cursor_when_always_shown_property_panel() {
if (m_property_panel == null)
return;
m_property_panel.set_follow_input_cursor_when_always_shown(
m_settings_panel.get_boolean(
"follow-input-cursor-when-always-shown"));
}
private void set_xkb_icon_rgba() {
string spec = m_settings_panel.get_string("xkb-icon-rgba");
Gdk.RGBA rgba = { 0, };
if (!rgba.parse(spec)) {
warning("invalid format of xkb-icon-rgba: %s", spec);
m_xkb_icon_rgba = Gdk.RGBA(){
red = 0.0, green = 0.0, blue = 0.0, alpha = 1.0 };
} else
m_xkb_icon_rgba = rgba;
if (m_icon_type == IconType.STATUS_ICON) {
if (m_xkb_icon_pixbufs.size() > 0) {
m_xkb_icon_pixbufs.remove_all();
if (m_status_icon != null && m_switcher != null)
state_changed();
}
} else if (m_icon_type == IconType.INDICATOR) {
if (m_xkb_icon_image.size() > 0) {
m_xkb_icon_image.remove_all();
if (m_indicator != null && m_switcher != null)
state_changed();
}
}
}
private void set_property_icon_delay_time() {
m_property_icon_delay_time =
m_settings_panel.get_int("property-icon-delay-time");
}
private int compare_versions(string version1, string version2) {
string[] version1_list = version1.split(".");
string[] version2_list = version2.split(".");
int major1, minor1, micro1, major2, minor2, micro2;
if (version1 == version2) {
return 0;
}
// The initial dconf value of "version" is "".
if (version1 == "") {
return -1;
}
if (version2 == "") {
return 1;
}
assert(version1_list.length >= 3);
assert(version2_list.length >= 3);
major1 = int.parse(version1_list[0]);
minor1 = int.parse(version1_list[1]);
micro1 = int.parse(version1_list[2]);
major2 = int.parse(version2_list[0]);
minor2 = int.parse(version2_list[1]);
micro2 = int.parse(version2_list[2]);
if (major1 == minor1 && minor1 == minor2 && micro1 == micro2) {
return 0;
}
if ((major1 > major2) ||
(major1 == major2 && minor1 > minor2) ||
(major1 == major2 && minor1 == minor2 &&
micro1 > micro2)) {
return 1;
}
return -1;
}
private void update_version_1_5_8() {
inited_engines_order = false;
}
private void set_version() {
string prev_version = m_settings_general.get_string("version");
string current_version = null;
if (compare_versions(prev_version, "1.5.8") < 0)
update_version_1_5_8();
current_version = "%d.%d.%d".printf(IBus.MAJOR_VERSION,
IBus.MINOR_VERSION,
IBus.MICRO_VERSION);
if (prev_version == current_version) {
return;
}
m_settings_general.set_string("version", current_version);
}
public void load_settings() {
set_version();
init_engines_order();
// Update m_use_system_keyboard_layout before update_engines()
// is called.
set_use_system_keyboard_layout();
set_use_global_engine();
set_use_xmodmap();
update_engines(m_settings_general.get_strv("preload-engines"),
m_settings_general.get_strv("engines-order"));
BindingCommon.unbind_switch_shortcut(
BindingCommon.KeyEventFuncType.ANY,
m_keybindings);
m_keybindings = null;
bind_switch_shortcut();
set_switcher_delay_time();
set_embed_preedit_text();
BindingCommon.set_custom_font(m_settings_panel,
null,
ref m_css_provider);
set_show_icon_on_systray();
set_lookup_table_orientation();
set_show_property_panel();
set_timeout_property_panel();
set_follow_input_cursor_when_always_shown_property_panel();
set_xkb_icon_rgba();
set_property_icon_delay_time();
}
/**
* disconnect_signals:
*
* Call this API before m_panel = null so that the ref_count becomes 0
*/
public void disconnect_signals() {
unowned GLib.Object object = m_status_icon;
#if INDICATOR
if (m_is_kde)
object = m_indicator;
#endif
if (m_popup_menu_id > 0) {
// No name functions refer m_panel in m_status_icon
if (GLib.SignalHandler.is_connected(object, m_popup_menu_id))
object.disconnect(m_popup_menu_id);
m_popup_menu_id = 0;
}
if (m_activate_id > 0) {
if (GLib.SignalHandler.is_connected(object, m_activate_id))
object.disconnect(m_activate_id);
m_activate_id = 0;
}
if (m_registered_status_notifier_item_id > 0) {
if (GLib.SignalHandler.is_connected(
object,
m_registered_status_notifier_item_id)) {
object.disconnect(m_registered_status_notifier_item_id);
}
m_registered_status_notifier_item_id = 0;
}
if (m_preload_engines_id > 0) {
GLib.Source.remove(m_preload_engines_id);
m_preload_engines_id = 0;
}
}
private void engine_contexts_insert(IBus.EngineDesc engine) {
if (m_use_global_engine)
return;
if (m_engine_contexts.size() >= 200) {
warning ("Contexts by windows are too much counted!");
m_engine_contexts.remove_all();
}
m_engine_contexts.replace(m_current_context_path, engine);
}
private void set_engine(IBus.EngineDesc engine) {
if (m_property_icon_delay_time_id > 0) {
GLib.Source.remove(m_property_icon_delay_time_id);
m_property_icon_delay_time_id = 0;
}
if (!m_bus.set_global_engine(engine.get_name())) {
warning("Switch engine to %s failed.", engine.get_name());
return;
}
/* Panel.update_property() will be called with a time lag
* by another engine because of DBus delay so need to
* clear m_icon_prop_key here to avoid wrong panel icon in
* disabled m_use_global_engine.
*/
m_icon_prop_key = "";
// set xkb layout
if (!m_use_system_keyboard_layout)
m_xkblayout.set_layout(engine);
engine_contexts_insert(engine);
}
private void switch_engine(int i, bool force = false) {
GLib.assert(i >= 0 && i < m_engines.length);
// Do not need switch
if (i == 0 && !force)
return;
IBus.EngineDesc engine = m_engines[i];
set_engine(engine);
}
private void handle_engine_switch_normal(Gdk.Event event) {
handle_engine_switch(event, false);
}
private void handle_engine_switch_reverse(Gdk.Event event) {
handle_engine_switch(event, true);
}
private void handle_engine_switch(Gdk.Event event, bool reverse) {
// Do not need switch IME
if (m_engines.length <= 1)
return;
uint keyval = event.key.keyval;
uint modifiers = KeybindingManager.MODIFIER_FILTER & event.key.state;
uint primary_modifiers =
KeybindingManager.get_primary_modifier(event.key.state);
bool pressed = KeybindingManager.primary_modifier_still_pressed(
event, primary_modifiers);
if (reverse) {
modifiers &= ~Gdk.ModifierType.SHIFT_MASK;
}
if (pressed && m_switcher_delay_time >= 0) {
int i = reverse ? m_engines.length - 1 : 1;
/* The flag of m_switcher.is_running avoids the following problem:
*
* When an IME is chosen on m_switcher, focus_in() is called
* for the fake input context. If an engine is set in focus_in()
* during running m_switcher when m_use_global_engine is false,
* state_changed() is also called and m_engines[] is modified
* in state_changed() and m_switcher.run() returns the index
* for m_engines[] but m_engines[] was modified by state_changed()
* and the index is not correct. */
i = m_switcher.run(keyval, modifiers, event, m_engines, i,
m_real_current_context_path);
if (i < 0) {
debug("switch cancelled");
} else if (i == 0) {
debug("do not have to switch");
} else {
this.switcher_focus_set_engine();
}
} else {
int i = reverse ? m_engines.length - 1 : 1;
switch_engine(i);
}
}
private void run_preload_engines(IBus.EngineDesc[] engines, int index) {
string[] names = {};
if (engines.length <= index) {
return;
}
if (m_preload_engines_id != 0) {
GLib.Source.remove(m_preload_engines_id);
m_preload_engines_id = 0;
}
names += engines[index].get_name();
m_preload_engines_id =
Timeout.add(
PRELOAD_ENGINES_DELAY_TIME,
() => {
if (!m_bus.is_connected())
return false;
m_bus.preload_engines_async.begin(names,
-1,
null);
return false;
});
}
private void update_engines(string[]? unowned_engine_names,
string[]? order_names) {
string[]? engine_names = unowned_engine_names;
if (engine_names == null || engine_names.length == 0)
engine_names = {"xkb:us::eng"};
string[] names = {};
foreach (var name in order_names) {
if (name in engine_names)
names += name;
}
foreach (var name in engine_names) {
if (name in names)
continue;
names += name;
}
var engines = m_bus.get_engines_by_names(names);
/* Fedora internal patch could save engines not in simple.xml
* likes 'xkb:cn::chi'.
*/
if (engines.length == 0) {
names = {"xkb:us::eng"};
m_settings_general.set_strv("preload-engines", names);
engines = m_bus.get_engines_by_names(names);
}
if (m_engines.length == 0) {
m_engines = engines;
switch_engine(0, true);
run_preload_engines(engines, 1);
} else {
var current_engine = m_engines[0];
m_engines = engines;
int i;
for (i = 0; i < m_engines.length; i++) {
if (current_engine.get_name() == engines[i].get_name()) {
switch_engine(i);
if (i != 0) {
run_preload_engines(engines, 0);
} else {
run_preload_engines(engines, 1);
}
return;
}
}
switch_engine(0, true);
run_preload_engines(engines, 1);
}
}
private void context_render_string(Cairo.Context cr,
string symbol,
int image_width,
int image_height) {
int lwidth = 0;
int lheight = 0;
var desc = Pango.FontDescription.from_string("Monospace Bold 22");
var layout = Pango.cairo_create_layout(cr);
if (symbol.length >= 3)
desc = Pango.FontDescription.from_string("Monospace Bold 18");
layout.set_font_description(desc);
layout.set_text(symbol, -1);
layout.get_size(out lwidth, out lheight);
cr.move_to((image_width - lwidth / Pango.SCALE) / 2,
(image_height - lheight / Pango.SCALE) / 2);
cr.set_source_rgba(m_xkb_icon_rgba.red,
m_xkb_icon_rgba.green,
m_xkb_icon_rgba.blue,
m_xkb_icon_rgba.alpha);
Pango.cairo_show_layout(cr, layout);
}