kwin/atoms.cpp

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2020-08-02 22:22:19 +00:00
/*
KWin - the KDE window manager
This file is part of the KDE project.
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SPDX-FileCopyrightText: 1999, 2000 Matthias Ettrich <ettrich@kde.org>
SPDX-FileCopyrightText: 2003 Lubos Lunak <l.lunak@kde.org>
SPDX-FileCopyrightText: 2013 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "atoms.h"
namespace KWin
{
Atoms::Atoms()
: kwin_running(QByteArrayLiteral("KWIN_RUNNING"))
, activities(QByteArrayLiteral("_KDE_NET_WM_ACTIVITIES"))
, wm_protocols(QByteArrayLiteral("WM_PROTOCOLS"))
, wm_delete_window(QByteArrayLiteral("WM_DELETE_WINDOW"))
, wm_take_focus(QByteArrayLiteral("WM_TAKE_FOCUS"))
, wm_change_state(QByteArrayLiteral("WM_CHANGE_STATE"))
, wm_client_leader(QByteArrayLiteral("WM_CLIENT_LEADER"))
, wm_window_role(QByteArrayLiteral("WM_WINDOW_ROLE"))
, wm_state(QByteArrayLiteral("WM_STATE"))
, sm_client_id(QByteArrayLiteral("SM_CLIENT_ID"))
, motif_wm_hints(QByteArrayLiteral("_MOTIF_WM_HINTS"))
, net_wm_context_help(QByteArrayLiteral("_NET_WM_CONTEXT_HELP"))
, net_wm_ping(QByteArrayLiteral("_NET_WM_PING"))
, net_wm_user_time(QByteArrayLiteral("_NET_WM_USER_TIME"))
, kde_net_wm_user_creation_time(QByteArrayLiteral("_KDE_NET_WM_USER_CREATION_TIME"))
, net_wm_take_activity(QByteArrayLiteral("_NET_WM_TAKE_ACTIVITY"))
, net_wm_window_opacity(QByteArrayLiteral("_NET_WM_WINDOW_OPACITY"))
[xwl] Drag and drop between Xwayland and Wayland native clients Summary: Building upon the generic X Selection support this patch establishes another selection class representing the XDND selection and provides interfaces to communicate drags originating from Xwayland windows to the Wayland server KWin and drags originating from Wayland native drags to Xwayland. For Wayland native drags KWin will claim the XDND selection as owner and will simply translate all relevant events to the XDND protocol and receive alike messages by X clients. When an X client claims the XDND selection KWin is notified via the X protocol and it decides if it allows the X drag to transcend into the Wayland protocol. If this is the case the mouse position is tracked and on entering a Wayland native window a proxy X Window is mapped to the top of the window stack. This proxy window acts as a drag destination for the drag origin window and again X messages will be translated into respective Wayland protocol calls. If the cursor leaves the Wayland window geometry before a drop is registered, the proxy window is unmapped, what triggers a subsequent drag leave event. In both directions the necessary core integration is minimal. There is a single call to be done in the drag and drop event filter through the Xwayland interface class. From my tests this patch facilitates drags between any Qt/KDE apps. What needs extra care are the browsers, which use target formats, that are not directly compatible with the Wayland protocol's MIME representation. For Chromium an additional integration step must be done in order to provide it with a net window stack containing the proxy window. Test Plan: Manually. Auto tests planned. Reviewers: #kwin Subscribers: zzag, kwin, alexde Tags: #kwin Maniphest Tasks: T4611 Differential Revision: https://phabricator.kde.org/D15627
2018-08-22 12:56:48 +00:00
, xdnd_selection(QByteArrayLiteral("XdndSelection"))
, xdnd_aware(QByteArrayLiteral("XdndAware"))
[xwl] Drag and drop between Xwayland and Wayland native clients Summary: Building upon the generic X Selection support this patch establishes another selection class representing the XDND selection and provides interfaces to communicate drags originating from Xwayland windows to the Wayland server KWin and drags originating from Wayland native drags to Xwayland. For Wayland native drags KWin will claim the XDND selection as owner and will simply translate all relevant events to the XDND protocol and receive alike messages by X clients. When an X client claims the XDND selection KWin is notified via the X protocol and it decides if it allows the X drag to transcend into the Wayland protocol. If this is the case the mouse position is tracked and on entering a Wayland native window a proxy X Window is mapped to the top of the window stack. This proxy window acts as a drag destination for the drag origin window and again X messages will be translated into respective Wayland protocol calls. If the cursor leaves the Wayland window geometry before a drop is registered, the proxy window is unmapped, what triggers a subsequent drag leave event. In both directions the necessary core integration is minimal. There is a single call to be done in the drag and drop event filter through the Xwayland interface class. From my tests this patch facilitates drags between any Qt/KDE apps. What needs extra care are the browsers, which use target formats, that are not directly compatible with the Wayland protocol's MIME representation. For Chromium an additional integration step must be done in order to provide it with a net window stack containing the proxy window. Test Plan: Manually. Auto tests planned. Reviewers: #kwin Subscribers: zzag, kwin, alexde Tags: #kwin Maniphest Tasks: T4611 Differential Revision: https://phabricator.kde.org/D15627
2018-08-22 12:56:48 +00:00
, xdnd_enter(QByteArrayLiteral("XdndEnter"))
, xdnd_type_list(QByteArrayLiteral("XdndTypeList"))
, xdnd_position(QByteArrayLiteral("XdndPosition"))
[xwl] Drag and drop between Xwayland and Wayland native clients Summary: Building upon the generic X Selection support this patch establishes another selection class representing the XDND selection and provides interfaces to communicate drags originating from Xwayland windows to the Wayland server KWin and drags originating from Wayland native drags to Xwayland. For Wayland native drags KWin will claim the XDND selection as owner and will simply translate all relevant events to the XDND protocol and receive alike messages by X clients. When an X client claims the XDND selection KWin is notified via the X protocol and it decides if it allows the X drag to transcend into the Wayland protocol. If this is the case the mouse position is tracked and on entering a Wayland native window a proxy X Window is mapped to the top of the window stack. This proxy window acts as a drag destination for the drag origin window and again X messages will be translated into respective Wayland protocol calls. If the cursor leaves the Wayland window geometry before a drop is registered, the proxy window is unmapped, what triggers a subsequent drag leave event. In both directions the necessary core integration is minimal. There is a single call to be done in the drag and drop event filter through the Xwayland interface class. From my tests this patch facilitates drags between any Qt/KDE apps. What needs extra care are the browsers, which use target formats, that are not directly compatible with the Wayland protocol's MIME representation. For Chromium an additional integration step must be done in order to provide it with a net window stack containing the proxy window. Test Plan: Manually. Auto tests planned. Reviewers: #kwin Subscribers: zzag, kwin, alexde Tags: #kwin Maniphest Tasks: T4611 Differential Revision: https://phabricator.kde.org/D15627
2018-08-22 12:56:48 +00:00
, xdnd_status(QByteArrayLiteral("XdndStatus"))
, xdnd_action_copy(QByteArrayLiteral("XdndActionCopy"))
, xdnd_action_move(QByteArrayLiteral("XdndActionMove"))
, xdnd_action_ask(QByteArrayLiteral("XdndActionAsk"))
, xdnd_drop(QByteArrayLiteral("XdndDrop"))
, xdnd_leave(QByteArrayLiteral("XdndLeave"))
, xdnd_finished(QByteArrayLiteral("XdndFinished"))
, net_frame_extents(QByteArrayLiteral("_NET_FRAME_EXTENTS"))
, kde_net_wm_frame_strut(QByteArrayLiteral("_KDE_NET_WM_FRAME_STRUT"))
, net_wm_sync_request_counter(QByteArrayLiteral("_NET_WM_SYNC_REQUEST_COUNTER"))
, net_wm_sync_request(QByteArrayLiteral("_NET_WM_SYNC_REQUEST"))
, kde_net_wm_shadow(QByteArrayLiteral("_KDE_NET_WM_SHADOW"))
, kde_first_in_window_list(QByteArrayLiteral("_KDE_FIRST_IN_WINDOWLIST"))
, kde_color_sheme(QByteArrayLiteral("_KDE_NET_WM_COLOR_SCHEME"))
, kde_skip_close_animation(QByteArrayLiteral("_KDE_NET_WM_SKIP_CLOSE_ANIMATION"))
Screenedge show support for Clients This provides a new protocol intended to be used by auto-hiding panels to make use of the centralized screen edges. To use it a Client can set an X11 property of type _KDE_NET_WM_SCREEN_EDGE_SHOW to KWin. As value it takes: * 0: top edge * 1: right edge * 2: bottom edge * 3: left edge KWin will hide the Client (hide because unmap or minimize would break it) and create an Edge. If that Edge gets triggered the Client is shown again and the property gets deleted. If the Client doesn't border the specified screen edge the Client gets shown immediately so that we never end in a situation that we cannot unhide the auto-hidden panel again. The exact process is described in the documentation of ScreenEdges. The Client can request to be shown again by deleting the property. If KWin gets restarted the state is read from the property and it is tried to create the edge as described. As this is a KWin specific extension we need to discuss what it means for Clients using this feature with other WMs: it does nothing. As the Client gets hidden by KWin and not by the Client, it just doesn't get hidden if the WM doesn't provide the feature. In case of an auto-hiding panel this seems like a good solution given that we don't want to hide it if we cannot unhide it. Of course there's the option for the Client to provide that feature itself and if that's wanted we would need to announce the feature in the _NET_SUPPORTED atom. At the moment that doesn't sound like being needed as Plasma doesn't want to provide an own implementation. The implementation comes with a small test application showing how the feature is intended to be used. REVIEW: 115910
2014-02-20 11:39:23 +00:00
, kde_screen_edge_show(QByteArrayLiteral("_KDE_NET_WM_SCREEN_EDGE_SHOW"))
, kwin_dbus_service(QByteArrayLiteral("_ORG_KDE_KWIN_DBUS_SERVICE"))
, utf8_string(QByteArrayLiteral("UTF8_STRING"))
[xwl] Generic X selections translation mechanism with Clipboard support Summary: In this patch an infrastructure is created to represent generic X selections in a Wayland session and use them for data transfers between Xwayland windows and Wayland native clients. The central manager is the DataBridge class, in which Selection objects can be created. This is hard-coded and such a Selection object persists until the end of the session, so no arbitrary selections can be created on the fly. For now the X Clipboard selection is supported, whose corresponding mechanism in the Wayland protocol is just called Selection. A Selection object listens for selection owner changes on the X side and for similar events into the Wayland server interfaces. If a data provider is available a selection source object is created by the Selection object. In case data is requested on the other side, a data transfer is initialized by creating a Transfer object. A Selection keeps track of all transfers and makes sure that they are destroyed when they are finished or in case they idle because of misbehaving clients. The Clipboard class translates the X Clipboard via a proxy window. Selection changes on the Wayland side are listened to through a new signal on the active KWayland seat interface. The previously used X clipboard syncer helper is disabled. The clipboard sync autotest is changed to the new mechanism. BUG: 394765 BUG: 395313 Test Plan: Manually and clipboard sync autotest. Reviewers: #kwin Subscribers: zzag, graesslin, kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D15061
2018-08-21 20:06:42 +00:00
, text(QByteArrayLiteral("TEXT"))
, uri_list(QByteArrayLiteral("text/uri-list"))
, netscape_url(QByteArrayLiteral("_NETSCAPE_URL"))
, moz_url(QByteArrayLiteral("text/x-moz-url"))
, wl_surface_id(QByteArrayLiteral("WL_SURFACE_ID"))
, kde_net_wm_appmenu_service_name(QByteArrayLiteral("_KDE_NET_WM_APPMENU_SERVICE_NAME"))
, kde_net_wm_appmenu_object_path(QByteArrayLiteral("_KDE_NET_WM_APPMENU_OBJECT_PATH"))
[xwl] Generic X selections translation mechanism with Clipboard support Summary: In this patch an infrastructure is created to represent generic X selections in a Wayland session and use them for data transfers between Xwayland windows and Wayland native clients. The central manager is the DataBridge class, in which Selection objects can be created. This is hard-coded and such a Selection object persists until the end of the session, so no arbitrary selections can be created on the fly. For now the X Clipboard selection is supported, whose corresponding mechanism in the Wayland protocol is just called Selection. A Selection object listens for selection owner changes on the X side and for similar events into the Wayland server interfaces. If a data provider is available a selection source object is created by the Selection object. In case data is requested on the other side, a data transfer is initialized by creating a Transfer object. A Selection keeps track of all transfers and makes sure that they are destroyed when they are finished or in case they idle because of misbehaving clients. The Clipboard class translates the X Clipboard via a proxy window. Selection changes on the Wayland side are listened to through a new signal on the active KWayland seat interface. The previously used X clipboard syncer helper is disabled. The clipboard sync autotest is changed to the new mechanism. BUG: 394765 BUG: 395313 Test Plan: Manually and clipboard sync autotest. Reviewers: #kwin Subscribers: zzag, graesslin, kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D15061
2018-08-21 20:06:42 +00:00
, clipboard(QByteArrayLiteral("CLIPBOARD"))
, timestamp(QByteArrayLiteral("TIMESTAMP"))
, targets(QByteArrayLiteral("TARGETS"))
, delete_atom(QByteArrayLiteral("DELETE"))
, incr(QByteArrayLiteral("INCR"))
, wl_selection(QByteArrayLiteral("WL_SELECTION"))
, m_dtSmWindowInfo(QByteArrayLiteral("_DT_SM_WINDOW_INFO"))
, m_motifSupport(QByteArrayLiteral("_MOTIF_WM_INFO"))
, m_helpersRetrieved(false)
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{
}
void Atoms::retrieveHelpers()
{
if (m_helpersRetrieved) {
return;
}
// just retrieve the atoms once, all others are retrieved when being accessed
// Q_UNUSED is used in the hope that the compiler doesn't optimize the operations away
xcb_atom_t atom = m_dtSmWindowInfo;
Q_UNUSED(atom)
atom = m_motifSupport;
Q_UNUSED(atom)
m_helpersRetrieved = true;
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}
} // namespace