887 lines
36 KiB
C++
887 lines
36 KiB
C++
/*
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KWin - the KDE window manager
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This file is part of the KDE project.
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SPDX-FileCopyrightText: 1999, 2000 Matthias Ettrich <ettrich@kde.org>
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SPDX-FileCopyrightText: 2003 Lubos Lunak <l.lunak@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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/*
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This file contains things relevant to window activation and focus
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stealing prevention.
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*/
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#include "x11client.h"
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#include "cursor.h"
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#include "focuschain.h"
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#include "netinfo.h"
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#include "platform.h"
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#include "workspace.h"
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#ifdef KWIN_BUILD_ACTIVITIES
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#include "activities.h"
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#endif
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#include "virtualdesktops.h"
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#include <kstartupinfo.h>
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#include <kstringhandler.h>
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#include <KLocalizedString>
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#include "atoms.h"
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#include "group.h"
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#include "rules.h"
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#include "screens.h"
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#include "useractions.h"
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#include <QDebug>
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namespace KWin
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{
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/*
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Prevention of focus stealing:
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KWin tries to prevent unwanted changes of focus, that would result
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from mapping a new window. Also, some nasty applications may try
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to force focus change even in cases when ICCCM 4.2.7 doesn't allow it
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(e.g. they may try to activate their main window because the user
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definitely "needs" to see something happened - misusing
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of QWidget::setActiveWindow() may be such case).
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There are 4 ways how a window may become active:
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- the user changes the active window (e.g. focus follows mouse, clicking
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on some window's titlebar) - the change of focus will
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be done by KWin, so there's nothing to solve in this case
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- the change of active window will be requested using the _NET_ACTIVE_WINDOW
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message (handled in RootInfo::changeActiveWindow()) - such requests
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will be obeyed, because this request is meant mainly for e.g. taskbar
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asking the WM to change the active window as a result of some user action.
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Normal applications should use this request only rarely in special cases.
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See also below the discussion of _NET_ACTIVE_WINDOW_TRANSFER.
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- the change of active window will be done by performing XSetInputFocus()
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on a window that's not currently active. ICCCM 4.2.7 describes when
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the application may perform change of input focus. In order to handle
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misbehaving applications, KWin will try to detect focus changes to
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windows that don't belong to currently active application, and restore
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focus back to the currently active window, instead of activating the window
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that got focus (unfortunately there's no way to FocusChangeRedirect similar
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to e.g. SubstructureRedirect, so there will be short time when the focus
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will be changed). The check itself that's done is
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Workspace::allowClientActivation() (see below).
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- a new window will be mapped - this is the most complicated case. If
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the new window belongs to the currently active application, it may be safely
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mapped on top and activated. The same if there's no active window,
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or the active window is the desktop. These checks are done by
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Workspace::allowClientActivation().
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Following checks need to compare times. One time is the timestamp
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of last user action in the currently active window, the other time is
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the timestamp of the action that originally caused mapping of the new window
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(e.g. when the application was started). If the first time is newer than
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the second one, the window will not be activated, as that indicates
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futher user actions took place after the action leading to this new
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mapped window. This check is done by Workspace::allowClientActivation().
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There are several ways how to get the timestamp of action that caused
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the new mapped window (done in X11Client::readUserTimeMapTimestamp()) :
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- the window may have the _NET_WM_USER_TIME property. This way
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the application may either explicitly request that the window is not
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activated (by using 0 timestamp), or the property contains the time
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of last user action in the application.
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- KWin itself tries to detect time of last user action in every window,
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by watching KeyPress and ButtonPress events on windows. This way some
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events may be missed (if they don't propagate to the toplevel window),
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but it's good as a fallback for applications that don't provide
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_NET_WM_USER_TIME, and missing some events may at most lead
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to unwanted focus stealing.
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- the timestamp may come from application startup notification.
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Application startup notification, if it exists for the new mapped window,
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should include time of the user action that caused it.
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- if there's no timestamp available, it's checked whether the new window
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belongs to some already running application - if yes, the timestamp
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will be 0 (i.e. refuse activation)
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- if the window is from session restored window, the timestamp will
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be 0 too, unless this application was the active one at the time
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when the session was saved, in which case the window will be
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activated if there wasn't any user interaction since the time
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KWin was started.
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- as the last resort, the _KDE_NET_USER_CREATION_TIME timestamp
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is used. For every toplevel window that is created (see CreateNotify
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handling), this property is set to the at that time current time.
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Since at this time it's known that the new window doesn't belong
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to any existing application (better said, the application doesn't
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have any other window mapped), it is either the very first window
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of the application, or it is the only window of the application
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that was hidden before. The latter case is handled by removing
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the property from windows before withdrawing them, making
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the timestamp empty for next mapping of the window. In the sooner
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case, the timestamp will be used. This helps in case when
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an application is launched without application startup notification,
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it creates its mainwindow, and starts its initialization (that
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may possibly take long time). The timestamp used will be older
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than any user action done after launching this application.
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- if no timestamp is found at all, the window is activated.
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The check whether two windows belong to the same application (same
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process) is done in X11Client::belongToSameApplication(). Not 100% reliable,
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but hopefully 99,99% reliable.
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As a somewhat special case, window activation is always enabled when
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session saving is in progress. When session saving, the session
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manager allows only one application to interact with the user.
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Not allowing window activation in such case would result in e.g. dialogs
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not becoming active, so focus stealing prevention would cause here
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more harm than good.
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Windows that attempted to become active but KWin prevented this will
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be marked as demanding user attention. They'll get
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the _NET_WM_STATE_DEMANDS_ATTENTION state, and the taskbar should mark
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them specially (blink, etc.). The state will be reset when the window
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eventually really becomes active.
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There are two more ways how a window can become obtrusive, window stealing
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focus: By showing above the active window, by either raising itself,
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or by moving itself on the active desktop.
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- KWin will refuse raising non-active window above the active one,
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unless they belong to the same application. Applications shouldn't
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raise their windows anyway (unless the app wants to raise one
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of its windows above another of its windows).
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- KWin activates windows moved to the current desktop (as that seems
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logical from the user's point of view, after sending the window
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there directly from KWin, or e.g. using pager). This means
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applications shouldn't send their windows to another desktop
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(SELI TODO - but what if they do?)
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Special cases I can think of:
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- konqueror reusing, i.e. kfmclient tells running Konqueror instance
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to open new window
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- without focus stealing prevention - no problem
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- with ASN (application startup notification) - ASN is forwarded,
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and because it's newer than the instance's user timestamp,
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it takes precedence
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- without ASN - user timestamp needs to be reset, otherwise it would
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be used, and it's old; moreover this new window mustn't be detected
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as window belonging to already running application, or it wouldn't
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be activated - see X11Client::sameAppWindowRoleMatch() for the (rather ugly)
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hack
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- konqueror preloading, i.e. window is created in advance, and kfmclient
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tells this Konqueror instance to show it later
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- without focus stealing prevention - no problem
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- with ASN - ASN is forwarded, and because it's newer than the instance's
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user timestamp, it takes precedence
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- without ASN - user timestamp needs to be reset, otherwise it would
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be used, and it's old; also, creation timestamp is changed to
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the time the instance starts (re-)initializing the window,
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this ensures creation timestamp will still work somewhat even in this case
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- KUniqueApplication - when the window is already visible, and the new instance
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wants it to activate
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- without focus stealing prevention - _NET_ACTIVE_WINDOW - no problem
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- with ASN - ASN is forwarded, and set on the already visible window, KWin
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treats the window as new with that ASN
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- without ASN - _NET_ACTIVE_WINDOW as application request is used,
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and there's no really usable timestamp, only timestamp
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from the time the (new) application instance was started,
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so KWin will activate the window *sigh*
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- the bad thing here is that there's absolutely no chance to recognize
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the case of starting this KUniqueApp from Konsole (and thus wanting
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the already visible window to become active) from the case
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when something started this KUniqueApp without ASN (in which case
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the already visible window shouldn't become active)
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- the only solution is using ASN for starting applications, at least silent
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(i.e. without feedback)
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- when one application wants to activate another application's window (e.g. KMail
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activating already running KAddressBook window ?)
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- without focus stealing prevention - _NET_ACTIVE_WINDOW - no problem
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- with ASN - can't be here, it's the KUniqueApp case then
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- without ASN - _NET_ACTIVE_WINDOW as application request should be used,
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KWin will activate the new window depending on the timestamp and
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whether it belongs to the currently active application
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_NET_ACTIVE_WINDOW usage:
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data.l[0]= 1 ->app request
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= 2 ->pager request
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= 0 - backwards compatibility
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data.l[1]= timestamp
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*/
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//****************************************
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// Workspace
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//****************************************
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/**
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* Informs the workspace about the active client, i.e. the client that
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* has the focus (or None if no client has the focus). This functions
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* is called by the client itself that gets focus. It has no other
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* effect than fixing the focus chain and the return value of
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* activeClient(). And of course, to propagate the active client to the
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* world.
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*/
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void Workspace::setActiveClient(AbstractClient* c)
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{
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if (active_client == c)
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return;
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if (active_popup && active_popup_client != c && set_active_client_recursion == 0)
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closeActivePopup();
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if (m_userActionsMenu->hasClient() && !m_userActionsMenu->isMenuClient(c) && set_active_client_recursion == 0) {
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m_userActionsMenu->close();
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}
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StackingUpdatesBlocker blocker(this);
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++set_active_client_recursion;
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updateFocusMousePosition(Cursors::self()->mouse()->pos());
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if (active_client != nullptr) {
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// note that this may call setActiveClient( NULL ), therefore the recursion counter
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active_client->setActive(false);
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}
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active_client = c;
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Q_ASSERT(c == nullptr || c->isActive());
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if (active_client) {
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last_active_client = active_client;
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FocusChain::self()->update(active_client, FocusChain::MakeFirst);
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active_client->demandAttention(false);
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// activating a client can cause a non active fullscreen window to loose the ActiveLayer status on > 1 screens
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if (screens()->count() > 1) {
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for (auto it = m_allClients.begin(); it != m_allClients.end(); ++it) {
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if (*it != active_client && (*it)->layer() == ActiveLayer && (*it)->output() == active_client->output()) {
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(*it)->updateLayer();
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}
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}
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}
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}
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updateToolWindows(false);
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if (c)
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disableGlobalShortcutsForClient(c->rules()->checkDisableGlobalShortcuts(false));
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else
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disableGlobalShortcutsForClient(false);
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updateStackingOrder(); // e.g. fullscreens have different layer when active/not-active
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if (rootInfo()) {
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rootInfo()->setActiveClient(active_client);
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}
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Q_EMIT clientActivated(active_client);
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--set_active_client_recursion;
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}
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/**
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* Tries to activate the client \a c. This function performs what you
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* expect when clicking the respective entry in a taskbar: showing and
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* raising the client (this may imply switching to the another virtual
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* desktop) and putting the focus onto it. Once X really gave focus to
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* the client window as requested, the client itself will call
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* setActiveClient() and the operation is complete. This may not happen
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* with certain focus policies, though.
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*
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* @see setActiveClient
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* @see requestFocus
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*/
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void Workspace::activateClient(AbstractClient* c, bool force)
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{
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if (c == nullptr) {
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focusToNull();
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setActiveClient(nullptr);
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return;
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}
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raiseClient(c);
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if (!c->isOnCurrentDesktop()) {
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++block_focus;
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VirtualDesktopManager::self()->setCurrent(c->desktops().constLast());
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--block_focus;
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}
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#ifdef KWIN_BUILD_ACTIVITIES
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if (!c->isOnCurrentActivity()) {
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++block_focus;
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//DBUS!
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Activities::self()->setCurrent(c->activities().constFirst()); //first isn't necessarily best, but it's easiest
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--block_focus;
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}
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#endif
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if (c->isMinimized())
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c->unminimize();
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// ensure the window is really visible - could eg. be a hidden utility window, see bug #348083
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c->showClient();
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// TODO force should perhaps allow this only if the window already contains the mouse
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if (options->focusPolicyIsReasonable() || force)
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requestFocus(c, force);
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// Don't update user time for clients that have focus stealing workaround.
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// As they usually belong to the current active window but fail to provide
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// this information, updating their user time would make the user time
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// of the currently active window old, and reject further activation for it.
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// E.g. typing URL in minicli which will show kio_uiserver dialog (with workaround),
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// and then kdesktop shows dialog about SSL certificate.
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// This needs also avoiding user creation time in X11Client::readUserTimeMapTimestamp().
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if (X11Client *client = dynamic_cast<X11Client *>(c)) {
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// updateUserTime is X11 specific
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client->updateUserTime();
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}
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}
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/**
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* Tries to activate the client by asking X for the input focus. This
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* function does not perform any show, raise or desktop switching. See
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* Workspace::activateClient() instead.
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*
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* @see activateClient
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*/
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bool Workspace::requestFocus(AbstractClient* c, bool force)
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{
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return takeActivity(c, force ? ActivityFocusForce : ActivityFocus);
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}
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bool Workspace::takeActivity(AbstractClient* c, ActivityFlags flags)
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{
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// the 'if ( c == active_client ) return;' optimization mustn't be done here
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if (!focusChangeEnabled() && (c != active_client))
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flags &= ~ActivityFocus;
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if (!c) {
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focusToNull();
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return true;
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}
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if (flags & ActivityFocus) {
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AbstractClient* modal = c->findModal();
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if (modal != nullptr && modal != c) {
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if (modal->desktops() != c->desktops()) {
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modal->setDesktops(c->desktops());
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}
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if (!modal->isShown(true) && !modal->isMinimized()) // forced desktop or utility window
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activateClient(modal); // activating a minimized blocked window will unminimize its modal implicitly
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// if the click was inside the window (i.e. handled is set),
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// but it has a modal, there's no need to use handled mode, because
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// the modal doesn't get the click anyway
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// raising of the original window needs to be still done
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if (flags & ActivityRaise)
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raiseClient(c);
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c = modal;
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}
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cancelDelayFocus();
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}
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if (!flags.testFlag(ActivityFocusForce) && (c->isDock() || c->isSplash())) {
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// toplevel menus and dock windows don't take focus if not forced
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// and don't have a flag that they take focus
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if (!c->dockWantsInput()) {
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flags &= ~ActivityFocus;
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}
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}
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if (c->isShade()) {
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if (c->wantsInput() && (flags & ActivityFocus)) {
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// client cannot accept focus, but at least the window should be active (window menu, et. al. )
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c->setActive(true);
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focusToNull();
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}
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flags &= ~ActivityFocus;
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}
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if (!c->isShown(true)) { // shouldn't happen, call activateClient() if needed
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qCWarning(KWIN_CORE) << "takeActivity: not shown" ;
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return false;
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}
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bool ret = true;
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if (flags & ActivityFocus)
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ret &= c->takeFocus();
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if (flags & ActivityRaise)
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workspace()->raiseClient(c);
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if (!c->isOnActiveOutput()) {
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setActiveOutput(c->output());
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}
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return ret;
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}
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/**
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* Informs the workspace that the client \a c has been hidden. If it
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* was the active client (or to-become the active client),
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* the workspace activates another one.
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*
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* @note @p c may already be destroyed.
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*/
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void Workspace::clientHidden(AbstractClient* c)
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{
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Q_ASSERT(!c->isShown(true) || !c->isOnCurrentDesktop() || !c->isOnCurrentActivity());
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activateNextClient(c);
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}
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AbstractClient *Workspace::clientUnderMouse(AbstractOutput *output) const
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{
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auto it = stackingOrder().constEnd();
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while (it != stackingOrder().constBegin()) {
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AbstractClient *client = qobject_cast<AbstractClient*>(*(--it));
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if (!client) {
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continue;
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}
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// rule out clients which are not really visible.
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// the screen test is rather superfluous for xrandr & twinview since the geometry would differ -> TODO: might be dropped
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if (!(client->isShown(false) && client->isOnCurrentDesktop() &&
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client->isOnCurrentActivity() && client->isOnOutput(output)))
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continue;
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if (client->frameGeometry().contains(Cursors::self()->mouse()->pos())) {
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return client;
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}
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}
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return nullptr;
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}
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// deactivates 'c' and activates next client
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bool Workspace::activateNextClient(AbstractClient* c)
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{
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// if 'c' is not the active or the to-become active one, do nothing
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if (!(c == active_client || (should_get_focus.count() > 0 && c == should_get_focus.last())))
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return false;
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closeActivePopup();
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if (c != nullptr) {
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if (c == active_client)
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setActiveClient(nullptr);
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should_get_focus.removeAll(c);
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}
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// if blocking focus, move focus to the desktop later if needed
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// in order to avoid flickering
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if (!focusChangeEnabled()) {
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focusToNull();
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return true;
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}
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if (!options->focusPolicyIsReasonable())
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return false;
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AbstractClient* get_focus = nullptr;
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VirtualDesktop *desktop = VirtualDesktopManager::self()->currentDesktop();
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if (!get_focus && showingDesktop())
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get_focus = findDesktop(true, desktop); // to not break the state
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if (!get_focus && options->isNextFocusPrefersMouse()) {
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get_focus = clientUnderMouse(c ? c->output() : workspace()->activeOutput());
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if (get_focus && (get_focus == c || get_focus->isDesktop())) {
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// should rather not happen, but it cannot get the focus. rest of usability is tested above
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get_focus = nullptr;
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}
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}
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if (!get_focus) { // no suitable window under the mouse -> find sth. else
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// first try to pass the focus to the (former) active clients leader
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if (c && c->isTransient()) {
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auto leaders = c->mainClients();
|
|
if (leaders.count() == 1 && FocusChain::self()->isUsableFocusCandidate(leaders.at(0), c)) {
|
|
get_focus = leaders.at(0);
|
|
raiseClient(get_focus); // also raise - we don't know where it came from
|
|
}
|
|
}
|
|
if (!get_focus) {
|
|
// nope, ask the focus chain for the next candidate
|
|
get_focus = FocusChain::self()->nextForDesktop(c, desktop);
|
|
}
|
|
}
|
|
|
|
if (get_focus == nullptr) // last chance: focus the desktop
|
|
get_focus = findDesktop(true, desktop);
|
|
|
|
if (get_focus != nullptr)
|
|
requestFocus(get_focus);
|
|
else
|
|
focusToNull();
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
void Workspace::switchToOutput(AbstractOutput *output)
|
|
{
|
|
if (!options->focusPolicyIsReasonable())
|
|
return;
|
|
closeActivePopup();
|
|
VirtualDesktop *desktop = VirtualDesktopManager::self()->currentDesktop();
|
|
AbstractClient *get_focus = FocusChain::self()->getForActivation(desktop, output);
|
|
if (get_focus == nullptr)
|
|
get_focus = findDesktop(true, desktop);
|
|
if (get_focus != nullptr && get_focus != mostRecentlyActivatedClient())
|
|
requestFocus(get_focus);
|
|
setActiveOutput(output);
|
|
}
|
|
|
|
void Workspace::gotFocusIn(const AbstractClient* c)
|
|
{
|
|
if (should_get_focus.contains(const_cast< AbstractClient* >(c))) {
|
|
// remove also all sooner elements that should have got FocusIn,
|
|
// but didn't for some reason (and also won't anymore, because they were sooner)
|
|
while (should_get_focus.first() != c)
|
|
should_get_focus.pop_front();
|
|
should_get_focus.pop_front(); // remove 'c'
|
|
}
|
|
}
|
|
|
|
void Workspace::setShouldGetFocus(AbstractClient* c)
|
|
{
|
|
should_get_focus.append(c);
|
|
updateStackingOrder(); // e.g. fullscreens have different layer when active/not-active
|
|
}
|
|
|
|
|
|
namespace FSP {
|
|
enum Level { None = 0, Low, Medium, High, Extreme };
|
|
}
|
|
|
|
// focus_in -> the window got FocusIn event
|
|
// ignore_desktop - call comes from _NET_ACTIVE_WINDOW message, don't refuse just because of window
|
|
// is on a different desktop
|
|
bool Workspace::allowClientActivation(const KWin::AbstractClient *c, xcb_timestamp_t time, bool focus_in, bool ignore_desktop)
|
|
{
|
|
// options->focusStealingPreventionLevel :
|
|
// 0 - none - old KWin behaviour, new windows always get focus
|
|
// 1 - low - focus stealing prevention is applied normally, when unsure, activation is allowed
|
|
// 2 - normal - focus stealing prevention is applied normally, when unsure, activation is not allowed,
|
|
// this is the default
|
|
// 3 - high - new window gets focus only if it belongs to the active application,
|
|
// or when no window is currently active
|
|
// 4 - extreme - no window gets focus without user intervention
|
|
if (time == -1U)
|
|
time = c->userTime();
|
|
int level = c->rules()->checkFSP(options->focusStealingPreventionLevel());
|
|
if (sessionManager()->state() == SessionState::Saving && level <= FSP::Medium) { // <= normal
|
|
return true;
|
|
}
|
|
AbstractClient* ac = mostRecentlyActivatedClient();
|
|
if (focus_in) {
|
|
if (should_get_focus.contains(const_cast< AbstractClient* >(c)))
|
|
return true; // FocusIn was result of KWin's action
|
|
// Before getting FocusIn, the active Client already
|
|
// got FocusOut, and therefore got deactivated.
|
|
ac = last_active_client;
|
|
}
|
|
if (time == 0) { // explicitly asked not to get focus
|
|
if (!c->rules()->checkAcceptFocus(false))
|
|
return false;
|
|
}
|
|
const int protection = ac ? ac->rules()->checkFPP(2) : 0;
|
|
|
|
// stealing is unconditionally allowed (NETWM behavior)
|
|
if (level == FSP::None || protection == FSP::None)
|
|
return true;
|
|
|
|
// The active client "grabs" the focus or stealing is generally forbidden
|
|
if (level == FSP::Extreme || protection == FSP::Extreme)
|
|
return false;
|
|
|
|
// Desktop switching is only allowed in the "no protection" case
|
|
if (!ignore_desktop && !c->isOnCurrentDesktop())
|
|
return false; // allow only with level == 0
|
|
|
|
// No active client, it's ok to pass focus
|
|
// NOTICE that extreme protection needs to be handled before to allow protection on unmanged windows
|
|
if (ac == nullptr || ac->isDesktop()) {
|
|
qCDebug(KWIN_CORE) << "Activation: No client active, allowing";
|
|
return true; // no active client -> always allow
|
|
}
|
|
|
|
// TODO window urgency -> return true?
|
|
|
|
// Unconditionally allow intra-client passing around for lower stealing protections
|
|
// unless the active client has High interest
|
|
if (AbstractClient::belongToSameApplication(c, ac, AbstractClient::SameApplicationCheck::RelaxedForActive) && protection < FSP::High) {
|
|
qCDebug(KWIN_CORE) << "Activation: Belongs to active application";
|
|
return true;
|
|
}
|
|
|
|
if (!c->isOnCurrentDesktop()) // we allowed explicit self-activation across virtual desktops
|
|
return false; // inside a client or if no client was active, but not otherwise
|
|
|
|
// High FPS, not intr-client change. Only allow if the active client has only minor interest
|
|
if (level > FSP::Medium && protection > FSP::Low)
|
|
return false;
|
|
|
|
if (time == -1U) { // no time known
|
|
qCDebug(KWIN_CORE) << "Activation: No timestamp at all";
|
|
// Only allow for Low protection unless active client has High interest in focus
|
|
if (level < FSP::Medium && protection < FSP::High)
|
|
return true;
|
|
// no timestamp at all, don't activate - because there's also creation timestamp
|
|
// done on CreateNotify, this case should happen only in case application
|
|
// maps again already used window, i.e. this won't happen after app startup
|
|
return false;
|
|
}
|
|
|
|
// Low or medium FSP, usertime comparism is possible
|
|
const xcb_timestamp_t user_time = ac->userTime();
|
|
qCDebug(KWIN_CORE) << "Activation, compared:" << c << ":" << time << ":" << user_time
|
|
<< ":" << (NET::timestampCompare(time, user_time) >= 0);
|
|
return NET::timestampCompare(time, user_time) >= 0; // time >= user_time
|
|
}
|
|
|
|
// basically the same like allowClientActivation(), this time allowing
|
|
// a window to be fully raised upon its own request (XRaiseWindow),
|
|
// if refused, it will be raised only on top of windows belonging
|
|
// to the same application
|
|
bool Workspace::allowFullClientRaising(const KWin::AbstractClient *c, xcb_timestamp_t time)
|
|
{
|
|
int level = c->rules()->checkFSP(options->focusStealingPreventionLevel());
|
|
if (sessionManager()->state() == SessionState::Saving && level <= 2) { // <= normal
|
|
return true;
|
|
}
|
|
AbstractClient* ac = mostRecentlyActivatedClient();
|
|
if (level == 0) // none
|
|
return true;
|
|
if (level == 4) // extreme
|
|
return false;
|
|
if (ac == nullptr || ac->isDesktop()) {
|
|
qCDebug(KWIN_CORE) << "Raising: No client active, allowing";
|
|
return true; // no active client -> always allow
|
|
}
|
|
// TODO window urgency -> return true?
|
|
if (AbstractClient::belongToSameApplication(c, ac, AbstractClient::SameApplicationCheck::RelaxedForActive)) {
|
|
qCDebug(KWIN_CORE) << "Raising: Belongs to active application";
|
|
return true;
|
|
}
|
|
if (level == 3) // high
|
|
return false;
|
|
xcb_timestamp_t user_time = ac->userTime();
|
|
qCDebug(KWIN_CORE) << "Raising, compared:" << time << ":" << user_time
|
|
<< ":" << (NET::timestampCompare(time, user_time) >= 0);
|
|
return NET::timestampCompare(time, user_time) >= 0; // time >= user_time
|
|
}
|
|
|
|
/**
|
|
* Called from X11Client after FocusIn that wasn't initiated by KWin and the client wasn't
|
|
* allowed to activate.
|
|
*
|
|
* Returns @c true if the focus has been restored successfully; otherwise returns @c false.
|
|
*/
|
|
bool Workspace::restoreFocus()
|
|
{
|
|
// this updateXTime() is necessary - as FocusIn events don't have
|
|
// a timestamp *sigh*, kwin's timestamp would be older than the timestamp
|
|
// that was used by whoever caused the focus change, and therefore
|
|
// the attempt to restore the focus would fail due to old timestamp
|
|
updateXTime();
|
|
if (should_get_focus.count() > 0)
|
|
return requestFocus(should_get_focus.last());
|
|
else if (last_active_client)
|
|
return requestFocus(last_active_client);
|
|
return true;
|
|
}
|
|
|
|
void Workspace::clientAttentionChanged(AbstractClient* c, bool set)
|
|
{
|
|
if (set) {
|
|
attention_chain.removeAll(c);
|
|
attention_chain.prepend(c);
|
|
} else
|
|
attention_chain.removeAll(c);
|
|
Q_EMIT clientDemandsAttentionChanged(c, set);
|
|
}
|
|
|
|
//********************************************
|
|
// Client
|
|
//********************************************
|
|
|
|
/**
|
|
* Updates the user time (time of last action in the active window).
|
|
* This is called inside kwin for every action with the window
|
|
* that qualifies for user interaction (clicking on it, activate it
|
|
* externally, etc.).
|
|
*/
|
|
void X11Client::updateUserTime(xcb_timestamp_t time)
|
|
{
|
|
// copied in Group::updateUserTime
|
|
if (time == XCB_TIME_CURRENT_TIME) {
|
|
updateXTime();
|
|
time = xTime();
|
|
}
|
|
if (time != -1U
|
|
&& (m_userTime == XCB_TIME_CURRENT_TIME
|
|
|| NET::timestampCompare(time, m_userTime) > 0)) { // time > user_time
|
|
m_userTime = time;
|
|
shade_below = nullptr; // do not hover re-shade a window after it got interaction
|
|
}
|
|
group()->updateUserTime(m_userTime);
|
|
}
|
|
|
|
xcb_timestamp_t X11Client::readUserCreationTime() const
|
|
{
|
|
Xcb::Property prop(false, window(), atoms->kde_net_wm_user_creation_time, XCB_ATOM_CARDINAL, 0, 1);
|
|
return prop.value<xcb_timestamp_t>(-1);
|
|
}
|
|
|
|
xcb_timestamp_t X11Client::readUserTimeMapTimestamp(const KStartupInfoId *asn_id, const KStartupInfoData *asn_data,
|
|
bool session) const
|
|
{
|
|
xcb_timestamp_t time = info->userTime();
|
|
//qDebug() << "User timestamp, initial:" << time;
|
|
//^^ this deadlocks kwin --replace sometimes.
|
|
|
|
// newer ASN timestamp always replaces user timestamp, unless user timestamp is 0
|
|
// helps e.g. with konqy reusing
|
|
if (asn_data != nullptr && time != 0) {
|
|
if (asn_id->timestamp() != 0
|
|
&& (time == -1U || NET::timestampCompare(asn_id->timestamp(), time) > 0)) {
|
|
time = asn_id->timestamp();
|
|
}
|
|
}
|
|
qCDebug(KWIN_CORE) << "User timestamp, ASN:" << time;
|
|
if (time == -1U) {
|
|
// The window doesn't have any timestamp.
|
|
// If it's the first window for its application
|
|
// (i.e. there's no other window from the same app),
|
|
// use the _KDE_NET_WM_USER_CREATION_TIME trick.
|
|
// Otherwise, refuse activation of a window
|
|
// from already running application if this application
|
|
// is not the active one (unless focus stealing prevention is turned off).
|
|
X11Client *act = dynamic_cast<X11Client *>(workspace()->mostRecentlyActivatedClient());
|
|
if (act != nullptr && !belongToSameApplication(act, this, SameApplicationCheck::RelaxedForActive)) {
|
|
bool first_window = true;
|
|
auto sameApplicationActiveHackPredicate = [this](const X11Client *cl) {
|
|
// ignore already existing splashes, toolbars, utilities and menus,
|
|
// as the app may show those before the main window
|
|
return !cl->isSplash() && !cl->isToolbar() && !cl->isUtility() && !cl->isMenu()
|
|
&& cl != this && X11Client::belongToSameApplication(cl, this, SameApplicationCheck::RelaxedForActive);
|
|
};
|
|
if (isTransient()) {
|
|
auto clientMainClients = [this]() {
|
|
QList<X11Client *> ret;
|
|
const auto mcs = mainClients();
|
|
for (auto mc: mcs) {
|
|
if (X11Client *c = dynamic_cast<X11Client *>(mc)) {
|
|
ret << c;
|
|
}
|
|
}
|
|
return ret;
|
|
};
|
|
if (act->hasTransient(this, true))
|
|
; // is transient for currently active window, even though it's not
|
|
// the same app (e.g. kcookiejar dialog) -> allow activation
|
|
else if (groupTransient() &&
|
|
findInList<X11Client, X11Client>(clientMainClients(), sameApplicationActiveHackPredicate) == nullptr)
|
|
; // standalone transient
|
|
else
|
|
first_window = false;
|
|
} else {
|
|
if (workspace()->findClient(sameApplicationActiveHackPredicate))
|
|
first_window = false;
|
|
}
|
|
// don't refuse if focus stealing prevention is turned off
|
|
if (!first_window && rules()->checkFSP(options->focusStealingPreventionLevel()) > 0) {
|
|
qCDebug(KWIN_CORE) << "User timestamp, already exists:" << 0;
|
|
return 0; // refuse activation
|
|
}
|
|
}
|
|
// Creation time would just mess things up during session startup,
|
|
// as possibly many apps are started up at the same time.
|
|
// If there's no active window yet, no timestamp will be needed,
|
|
// as plain Workspace::allowClientActivation() will return true
|
|
// in such case. And if there's already active window,
|
|
// it's better not to activate the new one.
|
|
// Unless it was the active window at the time
|
|
// of session saving and there was no user interaction yet,
|
|
// this check will be done in manage().
|
|
if (session)
|
|
return -1U;
|
|
time = readUserCreationTime();
|
|
}
|
|
qCDebug(KWIN_CORE) << "User timestamp, final:" << this << ":" << time;
|
|
return time;
|
|
}
|
|
|
|
xcb_timestamp_t X11Client::userTime() const
|
|
{
|
|
xcb_timestamp_t time = m_userTime;
|
|
if (time == 0) // doesn't want focus after showing
|
|
return 0;
|
|
Q_ASSERT(group() != nullptr);
|
|
if (time == -1U
|
|
|| (group()->userTime() != -1U
|
|
&& NET::timestampCompare(group()->userTime(), time) > 0))
|
|
time = group()->userTime();
|
|
return time;
|
|
}
|
|
|
|
void X11Client::doSetActive()
|
|
{
|
|
updateUrgency(); // demand attention again if it's still urgent
|
|
info->setState(isActive() ? NET::Focused : NET::States(), NET::Focused);
|
|
}
|
|
|
|
void X11Client::startupIdChanged()
|
|
{
|
|
KStartupInfoId asn_id;
|
|
KStartupInfoData asn_data;
|
|
bool asn_valid = workspace()->checkStartupNotification(window(), asn_id, asn_data);
|
|
if (!asn_valid)
|
|
return;
|
|
// If the ASN contains desktop, move it to the desktop, otherwise move it to the current
|
|
// desktop (since the new ASN should make the window act like if it's a new application
|
|
// launched). However don't affect the window's desktop if it's set to be on all desktops.
|
|
int desktop = VirtualDesktopManager::self()->current();
|
|
if (asn_data.desktop() != 0)
|
|
desktop = asn_data.desktop();
|
|
if (!isOnAllDesktops())
|
|
workspace()->sendClientToDesktop(this, desktop, true);
|
|
if (asn_data.xinerama() != -1) {
|
|
AbstractOutput *output = kwinApp()->platform()->findOutput(asn_data.xinerama());
|
|
if (output) {
|
|
workspace()->sendClientToOutput(this, output);
|
|
}
|
|
}
|
|
const xcb_timestamp_t timestamp = asn_id.timestamp();
|
|
if (timestamp != 0) {
|
|
bool activate = workspace()->allowClientActivation(this, timestamp);
|
|
if (asn_data.desktop() != 0 && !isOnCurrentDesktop())
|
|
activate = false; // it was started on different desktop than current one
|
|
if (activate)
|
|
workspace()->activateClient(this);
|
|
else
|
|
demandAttention();
|
|
}
|
|
}
|
|
|
|
void X11Client::updateUrgency()
|
|
{
|
|
if (info->urgency())
|
|
demandAttention();
|
|
}
|
|
|
|
//****************************************
|
|
// Group
|
|
//****************************************
|
|
|
|
void Group::startupIdChanged()
|
|
{
|
|
KStartupInfoId asn_id;
|
|
KStartupInfoData asn_data;
|
|
bool asn_valid = workspace()->checkStartupNotification(leader_wid, asn_id, asn_data);
|
|
if (!asn_valid)
|
|
return;
|
|
if (asn_id.timestamp() != 0 && user_time != -1U
|
|
&& NET::timestampCompare(asn_id.timestamp(), user_time) > 0) {
|
|
user_time = asn_id.timestamp();
|
|
}
|
|
}
|
|
|
|
void Group::updateUserTime(xcb_timestamp_t time)
|
|
{
|
|
// copy of X11Client::updateUserTime
|
|
if (time == XCB_CURRENT_TIME) {
|
|
updateXTime();
|
|
time = xTime();
|
|
}
|
|
if (time != -1U
|
|
&& (user_time == XCB_CURRENT_TIME
|
|
|| NET::timestampCompare(time, user_time) > 0)) // time > user_time
|
|
user_time = time;
|
|
}
|
|
|
|
} // namespace
|