Plasma-workspace

virtualdesktopinfo.cpp
1/*
2 SPDX-FileCopyrightText: 2016 Eike Hein <hein@kde.org>
3
4 SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
5*/
6
7#include "virtualdesktopinfo.h"
8#include "libtaskmanager_debug.h"
9
10#include <KLocalizedString>
11#include <KWindowSystem>
12#include <KX11Extras>
13
14#include <qwayland-org-kde-plasma-virtual-desktop.h>
15
16#include <QDBusConnection>
17#include <QDBusMessage>
18#include <QDBusPendingCallWatcher>
19#include <QDBusPendingReply>
20#include <QGuiApplication>
21#include <QWaylandClientExtension>
22
23#include <config-X11.h>
24
25#if HAVE_X11
26#include <netwm.h>
27#endif // HAVE_X11
28
29namespace X11Info
30{
31[[nodiscard]] inline auto connection()
32{
33 return qGuiApp->nativeInterface<QNativeInterface::QX11Application>()->connection();
34}
35}
36
37namespace TaskManager
38{
39class Q_DECL_HIDDEN VirtualDesktopInfo::Private : public QObject
40{
41 Q_OBJECT
42
43public:
44 Private();
45 virtual ~Private()
46 {
47 }
48
49 uint refCount = 1;
50 // Fall back to true if we get an invalid DBus response when asking for the
51 // user's preference since that's what it was for years and years while
52 // 425787 was broken.
53 bool navigationWrappingAround = true;
54
55 virtual void init() = 0;
56 virtual QVariant currentDesktop() const = 0;
57 virtual int numberOfDesktops() const = 0;
58 virtual QVariantList desktopIds() const = 0;
59 virtual QStringList desktopNames() const = 0;
60 virtual quint32 position(const QVariant &desktop) const = 0;
61 virtual int desktopLayoutRows() const = 0;
62 virtual void requestActivate(const QVariant &desktop) = 0;
63 virtual void requestCreateDesktop(quint32 position) = 0;
64 virtual void requestRemoveDesktop(quint32 position) = 0;
65
66Q_SIGNALS:
67 void currentDesktopChanged() const;
68 void numberOfDesktopsChanged() const;
69 void desktopIdsChanged() const;
70 void desktopNamesChanged() const;
71 void desktopLayoutRowsChanged() const;
72 void navigationWrappingAroundChanged() const;
73
74protected Q_SLOTS:
75 void navigationWrappingAroundChanged(bool newVal);
76};
77
78VirtualDesktopInfo::Private::Private()
79{
80 // Connect to navigationWrappingAroundChanged signal
81 const bool connection = QDBusConnection::sessionBus().connect(QStringLiteral("org.kde.KWin"),
82 QStringLiteral("/VirtualDesktopManager"),
83 QStringLiteral("org.kde.KWin.VirtualDesktopManager"),
84 QStringLiteral("navigationWrappingAroundChanged"),
85 this,
86 SLOT(navigationWrappingAroundChanged(bool)));
87 if (!connection) {
88 qCWarning(TASKMANAGER_DEBUG) << "Could not connect to org.kde.KWin.VirtualDesktopManager.navigationWrappingAroundChanged signal";
89 }
90
91 // ...Then get the property's current value
92 QDBusMessage msg = QDBusMessage::createMethodCall(QStringLiteral("org.kde.KWin"),
93 QStringLiteral("/VirtualDesktopManager"),
94 QStringLiteral("org.freedesktop.DBus.Properties"),
95 QStringLiteral("Get"));
96 msg.setArguments({QStringLiteral("org.kde.KWin.VirtualDesktopManager"), QStringLiteral("navigationWrappingAround")});
97 auto *watcher = new QDBusPendingCallWatcher(QDBusConnection::sessionBus().asyncCall(msg), this);
98 QObject::connect(watcher, &QDBusPendingCallWatcher::finished, this, [this](QDBusPendingCallWatcher *watcher) {
99 QDBusPendingReply<QVariant> reply = *watcher;
100 watcher->deleteLater();
101
102 if (reply.isError()) {
103 qCWarning(TASKMANAGER_DEBUG) << "Failed to determine whether virtual desktop navigation wrapping is enabled: " << reply.error().message();
104 return;
105 }
106
107 navigationWrappingAroundChanged(reply.value().toBool());
108 });
109}
110
111void VirtualDesktopInfo::Private::navigationWrappingAroundChanged(bool newVal)
112{
113 if (navigationWrappingAround == newVal) {
114 return;
115 }
116 navigationWrappingAround = newVal;
117 Q_EMIT navigationWrappingAroundChanged();
118}
119
120#if HAVE_X11
121class Q_DECL_HIDDEN VirtualDesktopInfo::XWindowPrivate : public VirtualDesktopInfo::Private
122{
123 Q_OBJECT
124public:
125 XWindowPrivate();
126
127 void init() override;
128 QVariant currentDesktop() const override;
129 int numberOfDesktops() const override;
130 QVariantList desktopIds() const override;
131 QStringList desktopNames() const override;
132 quint32 position(const QVariant &desktop) const override;
133 int desktopLayoutRows() const override;
134 void requestActivate(const QVariant &desktop) override;
135 void requestCreateDesktop(quint32 position) override;
136 void requestRemoveDesktop(quint32 position) override;
137};
138
139VirtualDesktopInfo::XWindowPrivate::XWindowPrivate()
140 : VirtualDesktopInfo::Private()
141{
142 init();
143}
144
145void VirtualDesktopInfo::XWindowPrivate::init()
146{
147 connect(KX11Extras::self(), &KX11Extras::currentDesktopChanged, this, &VirtualDesktopInfo::XWindowPrivate::currentDesktopChanged);
148
149 connect(KX11Extras::self(), &KX11Extras::numberOfDesktopsChanged, this, &VirtualDesktopInfo::XWindowPrivate::numberOfDesktopsChanged);
150
151 connect(KX11Extras::self(), &KX11Extras::desktopNamesChanged, this, &VirtualDesktopInfo::XWindowPrivate::desktopNamesChanged);
152
153 QDBusConnection dbus = QDBusConnection::sessionBus();
154 dbus.connect(QString(),
155 QStringLiteral("/VirtualDesktopManager"),
156 QStringLiteral("org.kde.KWin.VirtualDesktopManager"),
157 QStringLiteral("rowsChanged"),
158 this,
159 SIGNAL(desktopLayoutRowsChanged()));
160}
161
162QVariant VirtualDesktopInfo::XWindowPrivate::currentDesktop() const
163{
164 return KX11Extras::currentDesktop();
165}
166
167int VirtualDesktopInfo::XWindowPrivate::numberOfDesktops() const
168{
169 return KX11Extras::numberOfDesktops();
170}
171
172QVariantList VirtualDesktopInfo::XWindowPrivate::desktopIds() const
173{
174 QVariantList ids;
175
176 for (int i = 1; i <= KX11Extras::numberOfDesktops(); ++i) {
177 ids << i;
178 }
179
180 return ids;
181}
182
183QStringList VirtualDesktopInfo::XWindowPrivate::desktopNames() const
184{
185 QStringList names;
186
187 // Virtual desktop numbers start at 1.
188 for (int i = 1; i <= KX11Extras::numberOfDesktops(); ++i) {
189 names << KX11Extras::desktopName(i);
190 }
191
192 return names;
193}
194
195quint32 VirtualDesktopInfo::XWindowPrivate::position(const QVariant &desktop) const
196{
197 bool ok = false;
198
199 const quint32 desktopNumber = desktop.toUInt(&ok);
200
201 if (!ok) {
202 return -1;
203 }
204
205 return desktopNumber;
206}
207
208int VirtualDesktopInfo::XWindowPrivate::desktopLayoutRows() const
209{
210 const NETRootInfo info(X11Info::connection(), NET::NumberOfDesktops | NET::DesktopNames, NET::WM2DesktopLayout);
211 return info.desktopLayoutColumnsRows().height();
212}
213
214void VirtualDesktopInfo::XWindowPrivate::requestActivate(const QVariant &desktop)
215{
216 bool ok = false;
217 const int desktopNumber = desktop.toInt(&ok);
218
219 // Virtual desktop numbers start at 1.
220 if (ok && desktopNumber > 0 && desktopNumber <= KX11Extras::numberOfDesktops()) {
221 KX11Extras::setCurrentDesktop(desktopNumber);
222 }
223}
224
225void VirtualDesktopInfo::XWindowPrivate::requestCreateDesktop(quint32 position)
226{
227 Q_UNUSED(position)
228
229 NETRootInfo info(X11Info::connection(), NET::NumberOfDesktops);
230 info.setNumberOfDesktops(info.numberOfDesktops() + 1);
231}
232
233void VirtualDesktopInfo::XWindowPrivate::requestRemoveDesktop(quint32 position)
234{
235 Q_UNUSED(position)
236
237 NETRootInfo info(X11Info::connection(), NET::NumberOfDesktops);
238
239 if (info.numberOfDesktops() > 1) {
240 info.setNumberOfDesktops(info.numberOfDesktops() - 1);
241 }
242}
243#endif // HAVE_X11
244
245class PlasmaVirtualDesktop : public QObject, public QtWayland::org_kde_plasma_virtual_desktop
246{
247 Q_OBJECT
248public:
249 PlasmaVirtualDesktop(::org_kde_plasma_virtual_desktop *object, const QString &id)
250 : org_kde_plasma_virtual_desktop(object)
251 , id(id)
252 {
253 }
254 ~PlasmaVirtualDesktop()
255 {
256 wl_proxy_destroy(reinterpret_cast<wl_proxy *>(object()));
257 }
258 const QString id;
259 QString name;
260Q_SIGNALS:
261 void done();
262 void activated();
263
264protected:
265 void org_kde_plasma_virtual_desktop_name(const QString &name) override
266 {
267 this->name = name;
268 }
269 void org_kde_plasma_virtual_desktop_done() override
270 {
271 Q_EMIT done();
272 }
273 void org_kde_plasma_virtual_desktop_activated() override
274 {
275 Q_EMIT activated();
276 }
277};
278
279class PlasmaVirtualDesktopManagement : public QWaylandClientExtensionTemplate<PlasmaVirtualDesktopManagement>,
280 public QtWayland::org_kde_plasma_virtual_desktop_management
281{
282 Q_OBJECT
283public:
284 PlasmaVirtualDesktopManagement()
285 : QWaylandClientExtensionTemplate(2)
286 {
287 connect(this, &QWaylandClientExtension::activeChanged, this, [this] {
288 if (!isActive()) {
289 wl_proxy_destroy(reinterpret_cast<wl_proxy *>(object()));
290 }
291 });
292 }
293 ~PlasmaVirtualDesktopManagement()
294 {
295 if (isActive()) {
296 wl_proxy_destroy(reinterpret_cast<wl_proxy *>(object()));
297 }
298 }
299Q_SIGNALS:
300 void desktopCreated(const QString &id, quint32 position);
301 void desktopRemoved(const QString &id);
302 void rowsChanged(const quint32 rows);
303
304protected:
305 void org_kde_plasma_virtual_desktop_management_desktop_created(const QString &desktop_id, uint32_t position) override
306 {
307 Q_EMIT desktopCreated(desktop_id, position);
308 }
309 void org_kde_plasma_virtual_desktop_management_desktop_removed(const QString &desktop_id) override
310 {
311 Q_EMIT desktopRemoved(desktop_id);
312 }
313 void org_kde_plasma_virtual_desktop_management_rows(uint32_t rows) override
314 {
315 Q_EMIT rowsChanged(rows);
316 }
317};
318
319class Q_DECL_HIDDEN VirtualDesktopInfo::WaylandPrivate : public VirtualDesktopInfo::Private
320{
321 Q_OBJECT
322public:
323 WaylandPrivate();
324
325 QVariant currentVirtualDesktop;
326 std::vector<std::unique_ptr<PlasmaVirtualDesktop>> virtualDesktops;
327 std::unique_ptr<PlasmaVirtualDesktopManagement> virtualDesktopManagement;
328 quint32 rows;
329
330 auto findDesktop(const QString &id) const;
331
332 void init() override;
333 void addDesktop(const QString &id, quint32 position);
334 QVariant currentDesktop() const override;
335 int numberOfDesktops() const override;
336 QVariantList desktopIds() const override;
337 QStringList desktopNames() const override;
338 quint32 position(const QVariant &desktop) const override;
339 int desktopLayoutRows() const override;
340 void requestActivate(const QVariant &desktop) override;
341 void requestCreateDesktop(quint32 position) override;
342 void requestRemoveDesktop(quint32 position) override;
343};
344
345VirtualDesktopInfo::WaylandPrivate::WaylandPrivate()
346 : VirtualDesktopInfo::Private()
347{
348 init();
349}
350
351auto VirtualDesktopInfo::WaylandPrivate::findDesktop(const QString &id) const
352{
353 return std::find_if(virtualDesktops.begin(), virtualDesktops.end(), [&id](const std::unique_ptr<PlasmaVirtualDesktop> &desktop) {
354 return desktop->id == id;
355 });
356}
357
358void VirtualDesktopInfo::WaylandPrivate::init()
359{
360 if (!KWindowSystem::isPlatformWayland()) {
361 return;
362 }
363
364 virtualDesktopManagement = std::make_unique<PlasmaVirtualDesktopManagement>();
365
366 connect(virtualDesktopManagement.get(), &PlasmaVirtualDesktopManagement::activeChanged, this, [this] {
367 if (!virtualDesktopManagement->isActive()) {
368 rows = 0;
369 virtualDesktops.clear();
370 currentVirtualDesktop.clear();
371 Q_EMIT currentDesktopChanged();
372 Q_EMIT numberOfDesktopsChanged();
373 Q_EMIT navigationWrappingAroundChanged();
374 Q_EMIT desktopIdsChanged();
375 Q_EMIT desktopNamesChanged();
376 Q_EMIT desktopLayoutRowsChanged();
377 }
378 });
379
380 connect(virtualDesktopManagement.get(), &PlasmaVirtualDesktopManagement::desktopCreated, this, &WaylandPrivate::addDesktop);
381
382 connect(virtualDesktopManagement.get(), &PlasmaVirtualDesktopManagement::desktopRemoved, this, [this](const QString &id) {
383 std::erase_if(virtualDesktops, [id](const std::unique_ptr<PlasmaVirtualDesktop> &desktop) {
384 return desktop->id == id;
385 });
386
387 Q_EMIT numberOfDesktopsChanged();
388 Q_EMIT desktopIdsChanged();
389 Q_EMIT desktopNamesChanged();
390
391 if (currentVirtualDesktop == id) {
392 currentVirtualDesktop.clear();
393 Q_EMIT currentDesktopChanged();
394 }
395 });
396
397 connect(virtualDesktopManagement.get(), &PlasmaVirtualDesktopManagement::rowsChanged, this, [this](quint32 rows) {
398 this->rows = rows;
399 Q_EMIT desktopLayoutRowsChanged();
400 });
401}
402
403void VirtualDesktopInfo::WaylandPrivate::addDesktop(const QString &id, quint32 position)
404{
405 if (findDesktop(id) != virtualDesktops.end()) {
406 return;
407 }
408
409 auto desktop = std::make_unique<PlasmaVirtualDesktop>(virtualDesktopManagement->get_virtual_desktop(id), id);
410
411 connect(desktop.get(), &PlasmaVirtualDesktop::activated, this, [id, this]() {
412 currentVirtualDesktop = id;
413 Q_EMIT currentDesktopChanged();
414 });
415
416 connect(desktop.get(), &PlasmaVirtualDesktop::done, this, [this]() {
417 Q_EMIT desktopNamesChanged();
418 });
419
420 virtualDesktops.insert(std::next(virtualDesktops.begin(), position), std::move(desktop));
421
422 Q_EMIT numberOfDesktopsChanged();
423 Q_EMIT desktopIdsChanged();
424 Q_EMIT desktopNamesChanged();
425}
426
427QVariant VirtualDesktopInfo::WaylandPrivate::currentDesktop() const
428{
429 return currentVirtualDesktop;
430}
431
432int VirtualDesktopInfo::WaylandPrivate::numberOfDesktops() const
433{
434 return virtualDesktops.size();
435}
436
437quint32 VirtualDesktopInfo::WaylandPrivate::position(const QVariant &desktop) const
438{
439 return std::distance(virtualDesktops.begin(), findDesktop(desktop.toString()));
440}
441
442QVariantList VirtualDesktopInfo::WaylandPrivate::desktopIds() const
443{
444 QVariantList ids;
445 ids.reserve(virtualDesktops.size());
446
447 std::transform(virtualDesktops.cbegin(), virtualDesktops.cend(), std::back_inserter(ids), [](const std::unique_ptr<PlasmaVirtualDesktop> &desktop) {
448 return desktop->id;
449 });
450 return ids;
451}
452
453QStringList VirtualDesktopInfo::WaylandPrivate::desktopNames() const
454{
455 if (!virtualDesktopManagement->isActive()) {
456 return QStringList();
457 }
458 QStringList names;
459 names.reserve(virtualDesktops.size());
460
461 std::transform(virtualDesktops.cbegin(), virtualDesktops.cend(), std::back_inserter(names), [](const std::unique_ptr<PlasmaVirtualDesktop> &desktop) {
462 return desktop->name;
463 });
464 return names;
465}
466
467int VirtualDesktopInfo::WaylandPrivate::desktopLayoutRows() const
468{
469 if (!virtualDesktopManagement->isActive()) {
470 return 0;
471 }
472
473 return rows;
474}
475
476void VirtualDesktopInfo::WaylandPrivate::requestActivate(const QVariant &desktop)
477{
478 if (!virtualDesktopManagement->isActive()) {
479 return;
480 }
481
482 if (auto it = findDesktop(desktop.toString()); it != virtualDesktops.end()) {
483 (*it)->request_activate();
484 }
485}
486
487void VirtualDesktopInfo::WaylandPrivate::requestCreateDesktop(quint32 position)
488{
489 if (!virtualDesktopManagement->isActive()) {
490 return;
491 }
492 virtualDesktopManagement->request_create_virtual_desktop(i18n("New Desktop"), position);
493}
494
495void VirtualDesktopInfo::WaylandPrivate::requestRemoveDesktop(quint32 position)
496{
497 if (!virtualDesktopManagement->isActive()) {
498 return;
499 }
500 if (virtualDesktops.size() == 1) {
501 return;
502 }
503
504 if (position > (virtualDesktops.size() - 1)) {
505 return;
506 }
507
508 virtualDesktopManagement->request_remove_virtual_desktop(virtualDesktops.at(position)->id);
509}
510
511VirtualDesktopInfo::Private *VirtualDesktopInfo::d = nullptr;
512
513VirtualDesktopInfo::VirtualDesktopInfo(QObject *parent)
514 : QObject(parent)
515{
516 if (!d) {
517#if HAVE_X11
518 if (KWindowSystem::isPlatformX11()) {
519 d = new VirtualDesktopInfo::XWindowPrivate;
520 } else
521#endif // HAVE_X11
522 {
523 d = new VirtualDesktopInfo::WaylandPrivate;
524 }
525 } else {
526 ++d->refCount;
527 }
528
529 connect(d, &VirtualDesktopInfo::Private::currentDesktopChanged, this, &VirtualDesktopInfo::currentDesktopChanged);
530 connect(d, &VirtualDesktopInfo::Private::numberOfDesktopsChanged, this, &VirtualDesktopInfo::numberOfDesktopsChanged);
531 connect(d, &VirtualDesktopInfo::Private::desktopIdsChanged, this, &VirtualDesktopInfo::desktopIdsChanged);
532 connect(d, &VirtualDesktopInfo::Private::desktopNamesChanged, this, &VirtualDesktopInfo::desktopNamesChanged);
533 connect(d, &VirtualDesktopInfo::Private::desktopLayoutRowsChanged, this, &VirtualDesktopInfo::desktopLayoutRowsChanged);
534}
535
536VirtualDesktopInfo::~VirtualDesktopInfo()
537{
538 --d->refCount;
539
540 if (!d->refCount) {
541 delete d;
542 d = nullptr;
543 }
544}
545
546QVariant VirtualDesktopInfo::currentDesktop() const
547{
548 return d->currentDesktop();
549}
550
551int VirtualDesktopInfo::numberOfDesktops() const
552{
553 return d->numberOfDesktops();
554}
555
556QVariantList VirtualDesktopInfo::desktopIds() const
557{
558 return d->desktopIds();
559}
560
561QStringList VirtualDesktopInfo::desktopNames() const
562{
563 return d->desktopNames();
564}
565
566quint32 VirtualDesktopInfo::position(const QVariant &desktop) const
567{
568 return d->position(desktop);
569}
570
571int VirtualDesktopInfo::desktopLayoutRows() const
572{
573 return d->desktopLayoutRows();
574}
575
576void VirtualDesktopInfo::requestActivate(const QVariant &desktop)
577{
578 d->requestActivate(desktop);
579}
580
581void VirtualDesktopInfo::requestCreateDesktop(quint32 position)
582{
583 return d->requestCreateDesktop(position);
584}
585
586void VirtualDesktopInfo::requestRemoveDesktop(quint32 position)
587{
588 return d->requestRemoveDesktop(position);
589}
590
591bool VirtualDesktopInfo::navigationWrappingAround() const
592{
593 return d->navigationWrappingAround;
594}
595
596}
597
598#include "virtualdesktopinfo.moc"
KWindowSystem::isPlatformX11
static bool isPlatformX11()
KWindowSystem::isPlatformWayland
static bool isPlatformWayland()
KX11Extras::numberOfDesktopsChanged
void numberOfDesktopsChanged(int num)
KX11Extras::currentDesktop
static int currentDesktop()
KX11Extras::numberOfDesktops
static int numberOfDesktops()
KX11Extras::setCurrentDesktop
static void setCurrentDesktop(int desktop)
KX11Extras::desktopNamesChanged
void desktopNamesChanged()
KX11Extras::desktopName
static QString desktopName(int desktop)
KX11Extras::currentDesktopChanged
void currentDesktopChanged(int desktop)
i18n
QString i18n(const char *text, const TYPE &arg...)
KStandardActions::name
QString name(StandardAction id)
QCA::init
QCA_EXPORT void init()
QDBusConnection::connect
bool connect(const QString &service, const QString &path, const QString &interface, const QString &name, QObject *receiver, const char *slot)
QDBusConnection::sessionBus
QDBusConnection sessionBus()
QDBusError::message
QString message() const const
QDBusMessage::createMethodCall
QDBusMessage createMethodCall(const QString &service, const QString &path, const QString &interface, const QString &method)
QDBusMessage::setArguments
void setArguments(const QList< QVariant > &arguments)
QDBusPendingCallWatcher::finished
void finished(QDBusPendingCallWatcher *self)
QDBusPendingReply::error
QDBusError error() const const
QDBusPendingReply::isError
bool isError() const const
QDBusPendingReply::value
typename Select< 0 >::Type value() const const
QList::reserve
void reserve(qsizetype size)
QObject::Q_EMIT
Q_EMITQ_EMIT
QObject::Q_SIGNALS
Q_SIGNALSQ_SIGNALS
QObject::connect
QMetaObject::Connection connect(const QObject *sender, PointerToMemberFunction signal, Functor functor)
QObject::deleteLater
void deleteLater()
QtFuture::connect
QFuture< ArgsType< Signal > > connect(Sender *sender, Signal signal)
QVariant::get
T & get(QVariant &v)
QVariant::toInt
int toInt(bool *ok) const const
QVariant::toString
QString toString() const const
QVariant::toUInt
uint toUInt(bool *ok) const const
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