gnome-shell/js/ui/overview.js
Carlos Garnacho 23c3f3fdea overview: Do not warp pointer to fake crossing event
This is actually papering over bugs in toolkits. On X11 the Xserver will
send crossing events when the stage input shape changes. As those go
end up ignored in GTK+, this warp call aims (and randomly manages) to send
a motion event that wouldn't go unlistened by the drag source window (the
one holding the grab).

This bug actually manifests in other ways, eg. by changing the window
beneath the pointer with alt-tab while DnDing. This should be fixed
altogether in the client side.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/317
2019-01-30 22:50:01 +01:00

649 lines
21 KiB
JavaScript

// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Clutter = imports.gi.Clutter;
const GLib = imports.gi.GLib;
const Meta = imports.gi.Meta;
const Mainloop = imports.mainloop;
const Signals = imports.signals;
const St = imports.gi.St;
const Shell = imports.gi.Shell;
const Background = imports.ui.background;
const DND = imports.ui.dnd;
const LayoutManager = imports.ui.layout;
const Lightbox = imports.ui.lightbox;
const Main = imports.ui.main;
const MessageTray = imports.ui.messageTray;
const OverviewControls = imports.ui.overviewControls;
const Panel = imports.ui.panel;
const Params = imports.misc.params;
const Tweener = imports.ui.tweener;
const WorkspaceThumbnail = imports.ui.workspaceThumbnail;
// Time for initial animation going into Overview mode
var ANIMATION_TIME = 0.25;
// Must be less than ANIMATION_TIME, since we switch to
// or from the overview completely after ANIMATION_TIME,
// and don't want the shading animation to get cut off
var SHADE_ANIMATION_TIME = .20;
var DND_WINDOW_SWITCH_TIMEOUT = 750;
var OVERVIEW_ACTIVATION_TIMEOUT = 0.5;
var ShellInfo = class {
constructor() {
this._source = null;
this._undoCallback = null;
}
_onUndoClicked() {
if (this._undoCallback)
this._undoCallback();
this._undoCallback = null;
if (this._source)
this._source.destroy();
}
setMessage(text, options) {
options = Params.parse(options, { undoCallback: null,
forFeedback: false
});
let undoCallback = options.undoCallback;
let forFeedback = options.forFeedback;
if (this._source == null) {
this._source = new MessageTray.SystemNotificationSource();
this._source.connect('destroy', () => {
this._source = null;
});
Main.messageTray.add(this._source);
}
let notification = null;
if (this._source.notifications.length == 0) {
notification = new MessageTray.Notification(this._source, text, null);
notification.setTransient(true);
notification.setForFeedback(forFeedback);
} else {
notification = this._source.notifications[0];
notification.update(text, null, { clear: true });
}
this._undoCallback = undoCallback;
if (undoCallback)
notification.addAction(_("Undo"), this._onUndoClicked.bind(this));
this._source.notify(notification);
}
};
var Overview = class {
constructor() {
this._overviewCreated = false;
this._initCalled = false;
Main.sessionMode.connect('updated', this._sessionUpdated.bind(this));
this._sessionUpdated();
}
_createOverview() {
if (this._overviewCreated)
return;
if (this.isDummy)
return;
this._overviewCreated = true;
this._overview = new St.BoxLayout({ name: 'overview',
/* Translators: This is the main view to select
activities. See also note for "Activities" string. */
accessible_name: _("Overview"),
vertical: true });
this._overview.add_constraint(new LayoutManager.MonitorConstraint({ primary: true }));
this._overview._delegate = this;
// The main Background actors are inside global.window_group which are
// hidden when displaying the overview, so we create a new
// one. Instances of this class share a single CoglTexture behind the
// scenes which allows us to show the background with different
// rendering options without duplicating the texture data.
this._backgroundGroup = new Meta.BackgroundGroup({ reactive: true });
Main.layoutManager.overviewGroup.add_child(this._backgroundGroup);
this._bgManagers = [];
this._desktopFade = new St.Widget();
Main.layoutManager.overviewGroup.add_child(this._desktopFade);
this._activationTime = 0;
this.visible = false; // animating to overview, in overview, animating out
this._shown = false; // show() and not hide()
this._modal = false; // have a modal grab
this.animationInProgress = false;
this.visibleTarget = false;
// During transitions, we raise this to the top to avoid having the overview
// area be reactive; it causes too many issues such as double clicks on
// Dash elements, or mouseover handlers in the workspaces.
this._coverPane = new Clutter.Actor({ opacity: 0,
reactive: true });
Main.layoutManager.overviewGroup.add_child(this._coverPane);
this._coverPane.connect('event', () => Clutter.EVENT_STOP);
Main.layoutManager.overviewGroup.add_child(this._overview);
this._coverPane.hide();
// XDND
this._dragMonitor = {
dragMotion: this._onDragMotion.bind(this)
};
Main.layoutManager.overviewGroup.connect('scroll-event',
this._onScrollEvent.bind(this));
Main.xdndHandler.connect('drag-begin', this._onDragBegin.bind(this));
Main.xdndHandler.connect('drag-end', this._onDragEnd.bind(this));
global.display.connect('restacked', this._onRestacked.bind(this));
this._windowSwitchTimeoutId = 0;
this._windowSwitchTimestamp = 0;
this._lastActiveWorkspaceIndex = -1;
this._lastHoveredWindow = null;
if (this._initCalled)
this.init();
}
_updateBackgrounds() {
for (let i = 0; i < this._bgManagers.length; i++)
this._bgManagers[i].destroy();
this._bgManagers = [];
for (let i = 0; i < Main.layoutManager.monitors.length; i++) {
let bgManager = new Background.BackgroundManager({ container: this._backgroundGroup,
monitorIndex: i,
vignette: true });
this._bgManagers.push(bgManager);
}
}
_unshadeBackgrounds() {
let backgrounds = this._backgroundGroup.get_children();
for (let i = 0; i < backgrounds.length; i++) {
Tweener.addTween(backgrounds[i],
{ brightness: 1.0,
vignette_sharpness: 0.0,
time: SHADE_ANIMATION_TIME,
transition: 'easeOutQuad'
});
}
}
_shadeBackgrounds() {
let backgrounds = this._backgroundGroup.get_children();
for (let i = 0; i < backgrounds.length; i++) {
Tweener.addTween(backgrounds[i],
{ brightness: Lightbox.VIGNETTE_BRIGHTNESS,
vignette_sharpness: Lightbox.VIGNETTE_SHARPNESS,
time: SHADE_ANIMATION_TIME,
transition: 'easeOutQuad'
});
}
}
_sessionUpdated() {
this.isDummy = !Main.sessionMode.hasOverview;
this._createOverview();
}
// The members we construct that are implemented in JS might
// want to access the overview as Main.overview to connect
// signal handlers and so forth. So we create them after
// construction in this init() method.
init() {
this._initCalled = true;
if (this.isDummy)
return;
this._shellInfo = new ShellInfo();
// Add a clone of the panel to the overview so spacing and such is
// automatic
this._panelGhost = new St.Bin({ child: new Clutter.Clone({ source: Main.panel }),
reactive: false,
opacity: 0 });
this._overview.add_actor(this._panelGhost);
this._searchEntry = new St.Entry({ style_class: 'search-entry',
/* Translators: this is the text displayed
in the search entry when no search is
active; it should not exceed ~30
characters. */
hint_text: _("Type to search…"),
track_hover: true,
can_focus: true });
this._searchEntryBin = new St.Bin({ child: this._searchEntry,
x_align: St.Align.MIDDLE });
this._overview.add_actor(this._searchEntryBin);
// Create controls
this._controls = new OverviewControls.ControlsManager(this._searchEntry);
this._dash = this._controls.dash;
this.viewSelector = this._controls.viewSelector;
// Add our same-line elements after the search entry
this._overview.add(this._controls.actor, { y_fill: true, expand: true });
// TODO - recalculate everything when desktop size changes
this.dashIconSize = this._dash.iconSize;
this._dash.connect('icon-size-changed', () => {
this.dashIconSize = this._dash.iconSize;
});
Main.layoutManager.connect('monitors-changed', this._relayout.bind(this));
this._relayout();
}
addSearchProvider(provider) {
this.viewSelector.addSearchProvider(provider);
}
removeSearchProvider(provider) {
this.viewSelector.removeSearchProvider(provider);
}
//
// options:
// - undoCallback (function): the callback to be called if undo support is needed
// - forFeedback (boolean): whether the message is for direct feedback of a user action
//
setMessage(text, options) {
if (this.isDummy)
return;
this._shellInfo.setMessage(text, options);
}
_onDragBegin() {
this._inXdndDrag = true;
DND.addDragMonitor(this._dragMonitor);
// Remember the workspace we started from
let workspaceManager = global.workspace_manager;
this._lastActiveWorkspaceIndex = workspaceManager.get_active_workspace_index();
}
_onDragEnd(time) {
this._inXdndDrag = false;
// In case the drag was canceled while in the overview
// we have to go back to where we started and hide
// the overview
if (this._shown) {
let workspaceManager = global.workspace_manager;
workspaceManager.get_workspace_by_index(this._lastActiveWorkspaceIndex).activate(time);
this.hide();
}
this._resetWindowSwitchTimeout();
this._lastHoveredWindow = null;
DND.removeDragMonitor(this._dragMonitor);
this.endItemDrag();
}
_resetWindowSwitchTimeout() {
if (this._windowSwitchTimeoutId != 0) {
Mainloop.source_remove(this._windowSwitchTimeoutId);
this._windowSwitchTimeoutId = 0;
}
}
_onDragMotion(dragEvent) {
let targetIsWindow = dragEvent.targetActor &&
dragEvent.targetActor._delegate &&
dragEvent.targetActor._delegate.metaWindow &&
!(dragEvent.targetActor._delegate instanceof WorkspaceThumbnail.WindowClone);
this._windowSwitchTimestamp = global.get_current_time();
if (targetIsWindow &&
dragEvent.targetActor._delegate.metaWindow == this._lastHoveredWindow)
return DND.DragMotionResult.CONTINUE;
this._lastHoveredWindow = null;
this._resetWindowSwitchTimeout();
if (targetIsWindow) {
this._lastHoveredWindow = dragEvent.targetActor._delegate.metaWindow;
this._windowSwitchTimeoutId = Mainloop.timeout_add(DND_WINDOW_SWITCH_TIMEOUT,
() => {
this._windowSwitchTimeoutId = 0;
Main.activateWindow(dragEvent.targetActor._delegate.metaWindow,
this._windowSwitchTimestamp);
this.hide();
this._lastHoveredWindow = null;
return GLib.SOURCE_REMOVE;
});
GLib.Source.set_name_by_id(this._windowSwitchTimeoutId, '[gnome-shell] Main.activateWindow');
}
return DND.DragMotionResult.CONTINUE;
}
_onScrollEvent(actor, event) {
this.emit('scroll-event', event);
return Clutter.EVENT_PROPAGATE;
}
addAction(action) {
if (this.isDummy)
return;
this._backgroundGroup.add_action(action);
}
_getDesktopClone() {
let windows = global.get_window_actors().filter(
w => w.meta_window.get_window_type() == Meta.WindowType.DESKTOP
);
if (windows.length == 0)
return null;
let window = windows[0];
let clone = new Clutter.Clone({ source: window,
x: window.x, y: window.y });
clone.source.connect('destroy', () => {
clone.destroy();
});
return clone;
}
_relayout() {
// To avoid updating the position and size of the workspaces
// we just hide the overview. The positions will be updated
// when it is next shown.
this.hide();
this._coverPane.set_position(0, 0);
this._coverPane.set_size(global.screen_width, global.screen_height);
this._updateBackgrounds();
}
_onRestacked() {
let stack = global.get_window_actors();
let stackIndices = {};
for (let i = 0; i < stack.length; i++) {
// Use the stable sequence for an integer to use as a hash key
stackIndices[stack[i].get_meta_window().get_stable_sequence()] = i;
}
this.emit('windows-restacked', stackIndices);
}
beginItemDrag(source) {
this.emit('item-drag-begin');
this._inItemDrag = true;
}
cancelledItemDrag(source) {
this.emit('item-drag-cancelled');
}
endItemDrag(source) {
if (!this._inItemDrag)
return;
this.emit('item-drag-end');
this._inItemDrag = false;
}
beginWindowDrag(window) {
this.emit('window-drag-begin', window);
this._inWindowDrag = true;
}
cancelledWindowDrag(window) {
this.emit('window-drag-cancelled', window);
}
endWindowDrag(window) {
if (!this._inWindowDrag)
return;
this.emit('window-drag-end', window);
this._inWindowDrag = false;
}
focusSearch() {
this.show();
this._searchEntry.grab_key_focus();
}
fadeInDesktop() {
this._desktopFade.opacity = 0;
this._desktopFade.show();
Tweener.addTween(this._desktopFade,
{ opacity: 255,
time: ANIMATION_TIME,
transition: 'easeOutQuad' });
}
fadeOutDesktop() {
if (!this._desktopFade.get_n_children()) {
let clone = this._getDesktopClone();
if (!clone)
return;
this._desktopFade.add_child(clone);
}
this._desktopFade.opacity = 255;
this._desktopFade.show();
Tweener.addTween(this._desktopFade,
{ opacity: 0,
time: ANIMATION_TIME,
transition: 'easeOutQuad'
});
}
// Checks if the Activities button is currently sensitive to
// clicks. The first call to this function within the
// OVERVIEW_ACTIVATION_TIMEOUT time of the hot corner being
// triggered will return false. This avoids opening and closing
// the overview if the user both triggered the hot corner and
// clicked the Activities button.
shouldToggleByCornerOrButton() {
if (this.animationInProgress)
return false;
if (this._inItemDrag || this._inWindowDrag)
return false;
if (this._activationTime == 0 ||
GLib.get_monotonic_time() / GLib.USEC_PER_SEC - this._activationTime > OVERVIEW_ACTIVATION_TIMEOUT)
return true;
return false;
}
_syncGrab() {
// We delay grab changes during animation so that when removing the
// overview we don't have a problem with the release of a press/release
// going to an application.
if (this.animationInProgress)
return true;
if (this._shown) {
let shouldBeModal = !this._inXdndDrag;
if (shouldBeModal) {
if (!this._modal) {
if (Main.pushModal(this._overview,
{ actionMode: Shell.ActionMode.OVERVIEW })) {
this._modal = true;
} else {
this.hide();
return false;
}
}
}
} else {
if (this._modal) {
Main.popModal(this._overview);
this._modal = false;
}
}
return true;
}
// show:
//
// Animates the overview visible and grabs mouse and keyboard input
show() {
if (this.isDummy)
return;
if (this._shown)
return;
this._shown = true;
if (!this._syncGrab())
return;
Main.layoutManager.showOverview();
this._animateVisible();
}
_animateVisible() {
if (this.visible || this.animationInProgress)
return;
this.visible = true;
this.animationInProgress = true;
this.visibleTarget = true;
this._activationTime = GLib.get_monotonic_time() / GLib.USEC_PER_SEC;
Meta.disable_unredirect_for_display(global.display);
this.viewSelector.show();
this._overview.opacity = 0;
Tweener.addTween(this._overview,
{ opacity: 255,
transition: 'easeOutQuad',
time: ANIMATION_TIME,
onComplete: this._showDone,
onCompleteScope: this
});
this._shadeBackgrounds();
this._coverPane.raise_top();
this._coverPane.show();
this.emit('showing');
}
_showDone() {
this.animationInProgress = false;
this._desktopFade.hide();
this._coverPane.hide();
this.emit('shown');
// Handle any calls to hide* while we were showing
if (!this._shown)
this._animateNotVisible();
this._syncGrab();
global.sync_pointer();
}
// hide:
//
// Reverses the effect of show()
hide() {
if (this.isDummy)
return;
if (!this._shown)
return;
let event = Clutter.get_current_event();
if (event) {
let type = event.type();
let button = (type == Clutter.EventType.BUTTON_PRESS ||
type == Clutter.EventType.BUTTON_RELEASE);
let ctrl = (event.get_state() & Clutter.ModifierType.CONTROL_MASK) != 0;
if (button && ctrl)
return;
}
this._shown = false;
this._animateNotVisible();
this._syncGrab();
}
_animateNotVisible() {
if (!this.visible || this.animationInProgress)
return;
this.animationInProgress = true;
this.visibleTarget = false;
this.viewSelector.animateFromOverview();
// Make other elements fade out.
Tweener.addTween(this._overview,
{ opacity: 0,
transition: 'easeOutQuad',
time: ANIMATION_TIME,
onComplete: this._hideDone,
onCompleteScope: this
});
this._unshadeBackgrounds();
this._coverPane.raise_top();
this._coverPane.show();
this.emit('hiding');
}
_hideDone() {
// Re-enable unredirection
Meta.enable_unredirect_for_display(global.display);
this.viewSelector.hide();
this._desktopFade.hide();
this._coverPane.hide();
this.visible = false;
this.animationInProgress = false;
this.emit('hidden');
// Handle any calls to show* while we were hiding
if (this._shown)
this._animateVisible();
else
Main.layoutManager.hideOverview();
this._syncGrab();
}
toggle() {
if (this.isDummy)
return;
if (this.visible)
this.hide();
else
this.show();
}
getShowAppsButton() {
return this._dash.showAppsButton;
}
};
Signals.addSignalMethods(Overview.prototype);