a4d3a57a1c
If the Shell is started with HighContrast enabled, it will never see another value for the GSettings keys. In that case, we just reset to the default. https://bugzilla.gnome.org/show_bug.cgi?id=642641
231 lines
8.5 KiB
JavaScript
231 lines
8.5 KiB
JavaScript
/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
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const DBus = imports.dbus;
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const GConf = imports.gi.GConf;
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const Gio = imports.gi.Gio;
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const Gtk = imports.gi.Gtk;
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const Lang = imports.lang;
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const Mainloop = imports.mainloop;
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const Shell = imports.gi.Shell;
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const Signals = imports.signals;
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const St = imports.gi.St;
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const PanelMenu = imports.ui.panelMenu;
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const PopupMenu = imports.ui.popupMenu;
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const Util = imports.misc.util;
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const Gettext = imports.gettext.domain('gnome-shell');
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const _ = Gettext.gettext;
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const A11Y_SCHEMA = 'org.gnome.desktop.a11y.keyboard';
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const KEY_STICKY_KEYS_ENABLED = 'stickykeys-enable';
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const KEY_BOUNCE_KEYS_ENABLED = 'bouncekeys-enable';
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const KEY_SLOW_KEYS_ENABLED = 'slowkeys-enable';
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const KEY_MOUSE_KEYS_ENABLED = 'mousekeys-enable';
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const APPLICATIONS_SCHEMA = 'org.gnome.desktop.a11y.applications';
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const XSETTINGS_SCHEMA = 'org.gnome.settings-daemon.plugins.xsettings';
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const KEY_DPI = 'dpi';
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const DPI_LOW_REASONABLE_VALUE = 50;
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const DPI_HIGH_REASONABLE_VALUE = 500;
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const DPI_FACTOR_LARGE = 1.25;
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const DPI_FACTOR_LARGER = 1.5;
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const DPI_FACTOR_LARGEST = 2.0;
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const DPI_DEFAULT = 96;
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const KEY_META_DIR = '/apps/metacity/general';
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const KEY_VISUAL_BELL = KEY_META_DIR + '/visual_bell';
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const DESKTOP_INTERFACE_SCHEMA = 'org.gnome.desktop.interface';
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const KEY_GTK_THEME = 'gtk-theme';
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const KEY_ICON_THEME = 'icon-theme';
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const HIGH_CONTRAST_THEME = 'HighContrast';
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function getDPIFromX() {
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let screen = global.get_gdk_screen();
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if (screen) {
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let width_dpi = (screen.get_width() / (screen.get_width_mm() / 25.4));
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let height_dpi = (screen.get_height() / (screen.get_height_mm() / 25.4));
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if (width_dpi < DPI_LOW_REASONABLE_VALUE
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|| width_dpi > DPI_HIGH_REASONABLE_VALUE
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|| height_dpi < DPI_LOW_REASONABLE_VALUE
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|| height_dpi > DPI_HIGH_REASONABLE_VALUE)
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return DPI_DEFAULT;
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else
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return (width_dpi + height_dpi) / 2;
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}
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return DPI_DEFAULT;
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}
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function ATIndicator() {
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this._init.apply(this, arguments);
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}
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ATIndicator.prototype = {
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__proto__: PanelMenu.SystemStatusButton.prototype,
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_init: function() {
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PanelMenu.SystemStatusButton.prototype._init.call(this, 'preferences-desktop-accessibility', null);
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let client = GConf.Client.get_default();
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client.add_dir(KEY_META_DIR, GConf.ClientPreloadType.PRELOAD_ONELEVEL, null);
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client.notify_add(KEY_META_DIR, Lang.bind(this, this._keyChanged), null, null);
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let highContrast = this._buildHCItem();
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this.menu.addMenuItem(highContrast);
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let magnifier = this._buildItem(_("Zoom"), APPLICATIONS_SCHEMA,
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'screen-magnifier-enabled');
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this.menu.addMenuItem(magnifier);
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let textZoom = this._buildFontItem();
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this.menu.addMenuItem(textZoom);
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let screenReader = this._buildItem(_("Screen Reader"), APPLICATIONS_SCHEMA,
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'screen-reader-enabled');
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this.menu.addMenuItem(screenReader);
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let screenKeyboard = this._buildItem(_("Screen Keyboard"), APPLICATIONS_SCHEMA,
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'screen-keyboard-enabled');
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this.menu.addMenuItem(screenKeyboard);
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let visualBell = this._buildItemGConf(_("Visual Alerts"), client, KEY_VISUAL_BELL);
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this.menu.addMenuItem(visualBell);
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let stickyKeys = this._buildItem(_("Sticky Keys"), A11Y_SCHEMA, KEY_STICKY_KEYS_ENABLED);
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this.menu.addMenuItem(stickyKeys);
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let slowKeys = this._buildItem(_("Slow Keys"), A11Y_SCHEMA, KEY_SLOW_KEYS_ENABLED);
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this.menu.addMenuItem(slowKeys);
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let bounceKeys = this._buildItem(_("Bounce Keys"), A11Y_SCHEMA, KEY_BOUNCE_KEYS_ENABLED);
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this.menu.addMenuItem(bounceKeys);
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let mouseKeys = this._buildItem(_("Mouse Keys"), A11Y_SCHEMA, KEY_MOUSE_KEYS_ENABLED);
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this.menu.addMenuItem(mouseKeys);
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this.menu.addMenuItem(new PopupMenu.PopupSeparatorMenuItem());
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this.menu.addAction(_("Universal Access Settings"), function() {
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Util.spawnDesktop('gnome-universal-access-panel');
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});
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},
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_buildItemExtended: function(string, initial_value, writable, on_set) {
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let widget = new PopupMenu.PopupSwitchMenuItem(string, initial_value);
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if (!writable)
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widget.actor.reactive = false;
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else
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widget.connect('toggled', function(item) {
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on_set(item.state);
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});
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return widget;
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},
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_buildItemGConf: function(string, client, key) {
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function on_get() {
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return client.get_bool(key);
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}
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let widget = this._buildItemExtended(string,
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client.get_bool(key),
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client.key_is_writable(key),
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function(enabled) {
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client.set_bool(key, enabled);
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});
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this.connect('gconf-changed', function() {
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widget.setToggleState(client.get_bool(key));
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});
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return widget;
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},
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_buildItem: function(string, schema, key) {
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let settings = new Gio.Settings({ schema: schema });
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let widget = this._buildItemExtended(string,
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settings.get_boolean(key),
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settings.is_writable(key),
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function(enabled) {
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return settings.set_boolean(key, enabled);
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});
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settings.connect('changed::'+key, function() {
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widget.setToggleState(settings.get_boolean(key));
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});
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return widget;
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},
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_buildHCItem: function() {
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let settings = new Gio.Settings({ schema: DESKTOP_INTERFACE_SCHEMA });
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let gtkTheme = settings.get_string(KEY_GTK_THEME);
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let iconTheme = settings.get_string(KEY_ICON_THEME);
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let hasHC = (gtkTheme == HIGH_CONTRAST_THEME);
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let highContrast = this._buildItemExtended(
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_("High Contrast"),
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hasHC,
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settings.is_writable(KEY_GTK_THEME) && settings.is_writable(KEY_ICON_THEME),
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function (enabled) {
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if (enabled) {
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settings.set_string(KEY_GTK_THEME, HIGH_CONTRAST_THEME);
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settings.set_string(KEY_ICON_THEME, HIGH_CONTRAST_THEME);
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} else if(!hasHC) {
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settings.set_string(KEY_GTK_THEME, gtkTheme);
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settings.set_string(KEY_ICON_THEME, iconTheme);
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} else {
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settings.reset(KEY_GTK_THEME);
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settings.reset(KEY_ICON_THEME);
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}
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});
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settings.connect('changed::' + KEY_GTK_THEME, function() {
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let value = settings.get_string(KEY_GTK_THEME);
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if (value == HIGH_CONTRAST_THEME) {
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highContrast.setToggleState(true);
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} else {
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highContrast.setToggleState(false);
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gtkTheme = value;
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}
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});
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settings.connect('changed::' + KEY_ICON_THEME, function() {
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let value = settings.get_string(KEY_ICON_THEME);
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if (value != HIGH_CONTRAST_THEME)
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iconTheme = value;
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});
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return highContrast;
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},
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_buildFontItem: function() {
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let settings = new Gio.Settings({ schema: XSETTINGS_SCHEMA });
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// we assume this never changes (which is not true if resolution
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// is changed, but we would need XRandR events for that)
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let x_value = getDPIFromX();
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let user_value;
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function on_get() {
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user_value = settings.get_double(KEY_DPI);
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return (user_value - (DPI_FACTOR_LARGE * x_value) > -1);
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}
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let initial_setting = on_get();
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let default_value = initial_setting ? x_value : user_value;
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let widget = this._buildItemExtended(_("Large Text"),
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initial_setting,
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settings.is_writable(KEY_DPI),
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function (enabled) {
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if (enabled)
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settings.set_double(KEY_DPI, DPI_FACTOR_LARGE * default_value);
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else
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settings.set_double(KEY_DPI, default_value);
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});
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settings.connect('changed::' + KEY_DPI, function() {
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let active = on_get();
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default_value = active ? x_value : user_value;
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widget.setToggleState(active);
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});
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return widget;
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},
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_keyChanged: function() {
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this.emit('gconf-changed');
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}
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};
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Signals.addSignalMethods(ATIndicator.prototype);
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