e44adb92cf
Extra parentheses usually add noise rather than clarity, so avoid them. https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/805
630 lines
20 KiB
JavaScript
630 lines
20 KiB
JavaScript
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
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/* exported SwitcherPopup, SwitcherList */
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const { Clutter, GLib, GObject, Meta, St } = imports.gi;
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const Main = imports.ui.main;
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var POPUP_DELAY_TIMEOUT = 150; // milliseconds
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var POPUP_SCROLL_TIME = 100; // milliseconds
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var POPUP_FADE_OUT_TIME = 100; // milliseconds
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var DISABLE_HOVER_TIMEOUT = 500; // milliseconds
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var NO_MODS_TIMEOUT = 1500; // milliseconds
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function mod(a, b) {
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return (a + b) % b;
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}
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function primaryModifier(mask) {
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if (mask == 0)
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return 0;
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let primary = 1;
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while (mask > 1) {
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mask >>= 1;
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primary <<= 1;
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}
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return primary;
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}
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var SwitcherPopup = GObject.registerClass({
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GTypeFlags: GObject.TypeFlags.ABSTRACT,
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}, class SwitcherPopup extends St.Widget {
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_init(items) {
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super._init({ style_class: 'switcher-popup',
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reactive: true,
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visible: false });
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this._switcherList = null;
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this._items = items || [];
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this._selectedIndex = 0;
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this.connect('destroy', this._onDestroy.bind(this));
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Main.uiGroup.add_actor(this);
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this._haveModal = false;
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this._modifierMask = 0;
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this._motionTimeoutId = 0;
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this._initialDelayTimeoutId = 0;
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this._noModsTimeoutId = 0;
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this.add_constraint(new Clutter.BindConstraint({
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source: global.stage,
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coordinate: Clutter.BindCoordinate.ALL,
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}));
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// Initially disable hover so we ignore the enter-event if
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// the switcher appears underneath the current pointer location
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this._disableHover();
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}
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vfunc_allocate(box, flags) {
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this.set_allocation(box, flags);
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let childBox = new Clutter.ActorBox();
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let primary = Main.layoutManager.primaryMonitor;
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let leftPadding = this.get_theme_node().get_padding(St.Side.LEFT);
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let rightPadding = this.get_theme_node().get_padding(St.Side.RIGHT);
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let hPadding = leftPadding + rightPadding;
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// Allocate the switcherList
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// We select a size based on an icon size that does not overflow the screen
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let [, childNaturalHeight] = this._switcherList.get_preferred_height(primary.width - hPadding);
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let [, childNaturalWidth] = this._switcherList.get_preferred_width(childNaturalHeight);
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childBox.x1 = Math.max(primary.x + leftPadding, primary.x + Math.floor((primary.width - childNaturalWidth) / 2));
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childBox.x2 = Math.min(primary.x + primary.width - rightPadding, childBox.x1 + childNaturalWidth);
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childBox.y1 = primary.y + Math.floor((primary.height - childNaturalHeight) / 2);
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childBox.y2 = childBox.y1 + childNaturalHeight;
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this._switcherList.allocate(childBox, flags);
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}
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_initialSelection(backward, _binding) {
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if (backward)
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this._select(this._items.length - 1);
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else if (this._items.length == 1)
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this._select(0);
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else
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this._select(1);
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}
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show(backward, binding, mask) {
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if (this._items.length == 0)
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return false;
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if (!Main.pushModal(this)) {
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// Probably someone else has a pointer grab, try again with keyboard only
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if (!Main.pushModal(this, { options: Meta.ModalOptions.POINTER_ALREADY_GRABBED }))
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return false;
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}
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this._haveModal = true;
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this._modifierMask = primaryModifier(mask);
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this.add_actor(this._switcherList);
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this._switcherList.connect('item-activated', this._itemActivated.bind(this));
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this._switcherList.connect('item-entered', this._itemEntered.bind(this));
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this._switcherList.connect('item-removed', this._itemRemoved.bind(this));
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// Need to force an allocation so we can figure out whether we
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// need to scroll when selecting
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this.opacity = 0;
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this.visible = true;
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this.get_allocation_box();
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this._initialSelection(backward, binding);
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// There's a race condition; if the user released Alt before
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// we got the grab, then we won't be notified. (See
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// https://bugzilla.gnome.org/show_bug.cgi?id=596695 for
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// details.) So we check now. (Have to do this after updating
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// selection.)
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if (this._modifierMask) {
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let [x_, y_, mods] = global.get_pointer();
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if (!(mods & this._modifierMask)) {
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this._finish(global.get_current_time());
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return false;
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}
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} else {
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this._resetNoModsTimeout();
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}
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// We delay showing the popup so that fast Alt+Tab users aren't
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// disturbed by the popup briefly flashing.
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this._initialDelayTimeoutId = GLib.timeout_add(
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GLib.PRIORITY_DEFAULT,
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POPUP_DELAY_TIMEOUT,
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() => {
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Main.osdWindowManager.hideAll();
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this.opacity = 255;
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this._initialDelayTimeoutId = 0;
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return GLib.SOURCE_REMOVE;
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});
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GLib.Source.set_name_by_id(this._initialDelayTimeoutId, '[gnome-shell] Main.osdWindow.cancel');
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return true;
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}
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_next() {
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return mod(this._selectedIndex + 1, this._items.length);
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}
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_previous() {
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return mod(this._selectedIndex - 1, this._items.length);
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}
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_keyPressHandler(_keysym, _action) {
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throw new GObject.NotImplementedError(`_keyPressHandler in ${this.constructor.name}`);
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}
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vfunc_key_press_event(keyEvent) {
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let keysym = keyEvent.keyval;
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let action = global.display.get_keybinding_action(
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keyEvent.hardware_keycode, keyEvent.modifier_state);
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this._disableHover();
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if (this._keyPressHandler(keysym, action) != Clutter.EVENT_PROPAGATE)
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return Clutter.EVENT_STOP;
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// Note: pressing one of the below keys will destroy the popup only if
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// that key is not used by the active popup's keyboard shortcut
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if (keysym === Clutter.KEY_Escape || keysym === Clutter.KEY_Tab)
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this.fadeAndDestroy();
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return Clutter.EVENT_STOP;
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}
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vfunc_key_release_event(keyEvent) {
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if (this._modifierMask) {
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let [x_, y_, mods] = global.get_pointer();
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let state = mods & this._modifierMask;
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if (state == 0)
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this._finish(keyEvent.time);
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} else {
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this._resetNoModsTimeout();
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}
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return Clutter.EVENT_STOP;
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}
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vfunc_button_press_event() {
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/* We clicked outside */
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this.fadeAndDestroy();
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return Clutter.EVENT_PROPAGATE;
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}
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_scrollHandler(direction) {
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if (direction == Clutter.ScrollDirection.UP)
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this._select(this._previous());
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else if (direction == Clutter.ScrollDirection.DOWN)
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this._select(this._next());
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}
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vfunc_scroll_event(scrollEvent) {
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this._scrollHandler(scrollEvent.scroll_direction);
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return Clutter.EVENT_PROPAGATE;
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}
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_itemActivatedHandler(n) {
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this._select(n);
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}
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_itemActivated(switcher, n) {
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this._itemActivatedHandler(n);
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this._finish(global.get_current_time());
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}
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_itemEnteredHandler(n) {
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this._select(n);
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}
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_itemEntered(switcher, n) {
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if (!this.mouseActive)
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return;
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this._itemEnteredHandler(n);
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}
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_itemRemovedHandler(n) {
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if (this._items.length > 0) {
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let newIndex = Math.min(n, this._items.length - 1);
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this._select(newIndex);
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} else {
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this.fadeAndDestroy();
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}
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}
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_itemRemoved(switcher, n) {
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this._itemRemovedHandler(n);
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}
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_disableHover() {
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this.mouseActive = false;
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if (this._motionTimeoutId != 0)
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GLib.source_remove(this._motionTimeoutId);
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this._motionTimeoutId = GLib.timeout_add(GLib.PRIORITY_DEFAULT, DISABLE_HOVER_TIMEOUT, this._mouseTimedOut.bind(this));
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GLib.Source.set_name_by_id(this._motionTimeoutId, '[gnome-shell] this._mouseTimedOut');
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}
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_mouseTimedOut() {
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this._motionTimeoutId = 0;
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this.mouseActive = true;
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return GLib.SOURCE_REMOVE;
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}
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_resetNoModsTimeout() {
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if (this._noModsTimeoutId != 0)
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GLib.source_remove(this._noModsTimeoutId);
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this._noModsTimeoutId = GLib.timeout_add(
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GLib.PRIORITY_DEFAULT,
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NO_MODS_TIMEOUT,
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() => {
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this._finish(global.get_current_time());
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this._noModsTimeoutId = 0;
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return GLib.SOURCE_REMOVE;
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});
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}
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_popModal() {
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if (this._haveModal) {
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Main.popModal(this);
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this._haveModal = false;
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}
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}
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fadeAndDestroy() {
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this._popModal();
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if (this.opacity > 0) {
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this.ease({
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opacity: 0,
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duration: POPUP_FADE_OUT_TIME,
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mode: Clutter.Animation.EASE_OUT_QUAD,
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onComplete: () => this.destroy(),
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});
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} else {
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this.destroy();
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}
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}
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_finish(_timestamp) {
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this.fadeAndDestroy();
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}
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_onDestroy() {
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this._popModal();
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if (this._motionTimeoutId != 0)
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GLib.source_remove(this._motionTimeoutId);
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if (this._initialDelayTimeoutId != 0)
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GLib.source_remove(this._initialDelayTimeoutId);
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if (this._noModsTimeoutId != 0)
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GLib.source_remove(this._noModsTimeoutId);
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}
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_select(num) {
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this._selectedIndex = num;
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this._switcherList.highlight(num);
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}
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});
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var SwitcherButton = GObject.registerClass(
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class SwitcherButton extends St.Button {
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_init(square) {
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super._init({ style_class: 'item-box',
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reactive: true });
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this._square = square;
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}
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vfunc_get_preferred_width(forHeight) {
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if (this._square)
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return this.get_preferred_height(-1);
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else
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return super.vfunc_get_preferred_width(forHeight);
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}
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});
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var SwitcherList = GObject.registerClass({
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Signals: { 'item-activated': { param_types: [GObject.TYPE_INT] },
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'item-entered': { param_types: [GObject.TYPE_INT] },
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'item-removed': { param_types: [GObject.TYPE_INT] } },
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}, class SwitcherList extends St.Widget {
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_init(squareItems) {
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super._init({ style_class: 'switcher-list' });
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this._list = new St.BoxLayout({ style_class: 'switcher-list-item-container',
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vertical: false,
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x_expand: true,
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y_expand: true });
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let layoutManager = this._list.get_layout_manager();
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this._list.spacing = 0;
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this._list.connect('style-changed', () => {
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this._list.spacing = this._list.get_theme_node().get_length('spacing');
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});
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this._scrollView = new St.ScrollView({ style_class: 'hfade',
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enable_mouse_scrolling: false });
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this._scrollView.set_policy(St.PolicyType.NEVER, St.PolicyType.NEVER);
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this._scrollView.add_actor(this._list);
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this.add_actor(this._scrollView);
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// Those arrows indicate whether scrolling in one direction is possible
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this._leftArrow = new St.DrawingArea({ style_class: 'switcher-arrow',
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pseudo_class: 'highlighted' });
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this._leftArrow.connect('repaint', () => {
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drawArrow(this._leftArrow, St.Side.LEFT);
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});
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this._rightArrow = new St.DrawingArea({ style_class: 'switcher-arrow',
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pseudo_class: 'highlighted' });
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this._rightArrow.connect('repaint', () => {
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drawArrow(this._rightArrow, St.Side.RIGHT);
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});
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this.add_actor(this._leftArrow);
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this.add_actor(this._rightArrow);
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this._items = [];
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this._highlighted = -1;
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this._squareItems = squareItems;
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this._scrollableRight = true;
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this._scrollableLeft = false;
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layoutManager.homogeneous = squareItems;
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}
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addItem(item, label) {
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let bbox = new SwitcherButton(this._squareItems);
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bbox.set_child(item);
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this._list.add_actor(bbox);
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let n = this._items.length;
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bbox.connect('clicked', () => this._onItemClicked(n));
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bbox.connect('motion-event', () => this._onItemEnter(n));
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bbox.label_actor = label;
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this._items.push(bbox);
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return bbox;
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}
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removeItem(index) {
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let item = this._items.splice(index, 1);
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item[0].destroy();
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this.emit('item-removed', index);
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}
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_onItemClicked(index) {
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this._itemActivated(index);
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}
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_onItemEnter(index) {
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// Avoid reentrancy
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if (index != this._currentItemEntered) {
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this._currentItemEntered = index;
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this._itemEntered(index);
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}
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return Clutter.EVENT_PROPAGATE;
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}
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highlight(index, justOutline) {
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if (this._items[this._highlighted]) {
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this._items[this._highlighted].remove_style_pseudo_class('outlined');
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this._items[this._highlighted].remove_style_pseudo_class('selected');
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}
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if (this._items[index]) {
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if (justOutline)
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this._items[index].add_style_pseudo_class('outlined');
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else
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this._items[index].add_style_pseudo_class('selected');
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}
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this._highlighted = index;
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let adjustment = this._scrollView.hscroll.adjustment;
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let [value] = adjustment.get_values();
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let [absItemX] = this._items[index].get_transformed_position();
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let [result_, posX, posY_] = this.transform_stage_point(absItemX, 0);
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let [containerWidth] = this.get_transformed_size();
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if (posX + this._items[index].get_width() > containerWidth)
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this._scrollToRight();
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else if (this._items[index].allocation.x1 - value < 0)
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this._scrollToLeft();
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}
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_scrollToLeft() {
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let adjustment = this._scrollView.hscroll.adjustment;
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let [value, lower_, upper, stepIncrement_, pageIncrement_, pageSize] = adjustment.get_values();
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let item = this._items[this._highlighted];
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if (item.allocation.x1 < value)
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value = Math.min(0, item.allocation.x1);
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else if (item.allocation.x2 > value + pageSize)
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value = Math.max(upper, item.allocation.x2 - pageSize);
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this._scrollableRight = true;
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adjustment.ease(value, {
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progress_mode: Clutter.AnimationMode.EASE_OUT_QUAD,
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duration: POPUP_SCROLL_TIME,
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onComplete: () => {
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if (this._highlighted == 0)
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this._scrollableLeft = false;
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this.queue_relayout();
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},
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});
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}
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_scrollToRight() {
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let adjustment = this._scrollView.hscroll.adjustment;
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let [value, lower_, upper, stepIncrement_, pageIncrement_, pageSize] = adjustment.get_values();
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let item = this._items[this._highlighted];
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if (item.allocation.x1 < value)
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value = Math.max(0, item.allocation.x1);
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else if (item.allocation.x2 > value + pageSize)
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value = Math.min(upper, item.allocation.x2 - pageSize);
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this._scrollableLeft = true;
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adjustment.ease(value, {
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progress_mode: Clutter.AnimationMode.EASE_OUT_QUAD,
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duration: POPUP_SCROLL_TIME,
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onComplete: () => {
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if (this._highlighted == this._items.length - 1)
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this._scrollableRight = false;
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this.queue_relayout();
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},
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});
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}
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_itemActivated(n) {
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this.emit('item-activated', n);
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}
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_itemEntered(n) {
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this.emit('item-entered', n);
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}
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_maxChildWidth(forHeight) {
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let maxChildMin = 0;
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let maxChildNat = 0;
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for (let i = 0; i < this._items.length; i++) {
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let [childMin, childNat] = this._items[i].get_preferred_width(forHeight);
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maxChildMin = Math.max(childMin, maxChildMin);
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maxChildNat = Math.max(childNat, maxChildNat);
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if (this._squareItems) {
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[childMin, childNat] = this._items[i].get_preferred_height(-1);
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maxChildMin = Math.max(childMin, maxChildMin);
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maxChildNat = Math.max(childNat, maxChildNat);
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}
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}
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return [maxChildMin, maxChildNat];
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}
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vfunc_get_preferred_width(forHeight) {
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let themeNode = this.get_theme_node();
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let [maxChildMin] = this._maxChildWidth(forHeight);
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let [minListWidth] = this._list.get_preferred_width(forHeight);
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return themeNode.adjust_preferred_width(maxChildMin, minListWidth);
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|
}
|
|
|
|
vfunc_get_preferred_height(_forWidth) {
|
|
let maxChildMin = 0;
|
|
let maxChildNat = 0;
|
|
|
|
for (let i = 0; i < this._items.length; i++) {
|
|
let [childMin, childNat] = this._items[i].get_preferred_height(-1);
|
|
maxChildMin = Math.max(childMin, maxChildMin);
|
|
maxChildNat = Math.max(childNat, maxChildNat);
|
|
}
|
|
|
|
if (this._squareItems) {
|
|
let [childMin] = this._maxChildWidth(-1);
|
|
maxChildMin = Math.max(childMin, maxChildMin);
|
|
maxChildNat = maxChildMin;
|
|
}
|
|
|
|
let themeNode = this.get_theme_node();
|
|
return themeNode.adjust_preferred_height(maxChildMin, maxChildNat);
|
|
}
|
|
|
|
vfunc_allocate(box, flags) {
|
|
this.set_allocation(box, flags);
|
|
|
|
let contentBox = this.get_theme_node().get_content_box(box);
|
|
let width = contentBox.x2 - contentBox.x1;
|
|
let height = contentBox.y2 - contentBox.y1;
|
|
|
|
let leftPadding = this.get_theme_node().get_padding(St.Side.LEFT);
|
|
let rightPadding = this.get_theme_node().get_padding(St.Side.RIGHT);
|
|
|
|
let [, natScrollViewWidth] = this._scrollView.get_preferred_width(height);
|
|
|
|
let childBox = new Clutter.ActorBox();
|
|
let scrollable = natScrollViewWidth > width;
|
|
|
|
this._scrollView.allocate(contentBox, flags);
|
|
|
|
let arrowWidth = Math.floor(leftPadding / 3);
|
|
let arrowHeight = arrowWidth * 2;
|
|
childBox.x1 = leftPadding / 2;
|
|
childBox.y1 = this.height / 2 - arrowWidth;
|
|
childBox.x2 = childBox.x1 + arrowWidth;
|
|
childBox.y2 = childBox.y1 + arrowHeight;
|
|
this._leftArrow.allocate(childBox, flags);
|
|
this._leftArrow.opacity = this._scrollableLeft && scrollable ? 255 : 0;
|
|
|
|
arrowWidth = Math.floor(rightPadding / 3);
|
|
arrowHeight = arrowWidth * 2;
|
|
childBox.x1 = this.width - arrowWidth - rightPadding / 2;
|
|
childBox.y1 = this.height / 2 - arrowWidth;
|
|
childBox.x2 = childBox.x1 + arrowWidth;
|
|
childBox.y2 = childBox.y1 + arrowHeight;
|
|
this._rightArrow.allocate(childBox, flags);
|
|
this._rightArrow.opacity = this._scrollableRight && scrollable ? 255 : 0;
|
|
}
|
|
});
|
|
|
|
function drawArrow(area, side) {
|
|
let themeNode = area.get_theme_node();
|
|
let borderColor = themeNode.get_border_color(side);
|
|
let bodyColor = themeNode.get_foreground_color();
|
|
|
|
let [width, height] = area.get_surface_size();
|
|
let cr = area.get_context();
|
|
|
|
cr.setLineWidth(1.0);
|
|
Clutter.cairo_set_source_color(cr, borderColor);
|
|
|
|
switch (side) {
|
|
case St.Side.TOP:
|
|
cr.moveTo(0, height);
|
|
cr.lineTo(Math.floor(width * 0.5), 0);
|
|
cr.lineTo(width, height);
|
|
break;
|
|
|
|
case St.Side.BOTTOM:
|
|
cr.moveTo(width, 0);
|
|
cr.lineTo(Math.floor(width * 0.5), height);
|
|
cr.lineTo(0, 0);
|
|
break;
|
|
|
|
case St.Side.LEFT:
|
|
cr.moveTo(width, height);
|
|
cr.lineTo(0, Math.floor(height * 0.5));
|
|
cr.lineTo(width, 0);
|
|
break;
|
|
|
|
case St.Side.RIGHT:
|
|
cr.moveTo(0, 0);
|
|
cr.lineTo(width, Math.floor(height * 0.5));
|
|
cr.lineTo(0, height);
|
|
break;
|
|
}
|
|
|
|
cr.strokePreserve();
|
|
|
|
Clutter.cairo_set_source_color(cr, bodyColor);
|
|
cr.fill();
|
|
cr.$dispose();
|
|
}
|
|
|