1 | /* |
2 | SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org> |
3 | SPDX-FileCopyrightText: 2023 Kai Uwe Broulik <kde@broulik.de> |
4 | |
5 | SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL |
6 | */ |
7 | #include "windowsystem.h" |
8 | #include "logging.h" |
9 | #include "surfacehelper.h" |
10 | #include "waylandxdgactivationv1_p.h" |
11 | #include "waylandxdgdialogv1_p.h" |
12 | #include "waylandxdgforeignv2_p.h" |
13 | |
14 | #include <KWaylandExtras> |
15 | #include <KWindowSystem> |
16 | |
17 | #include "qwayland-plasma-window-management.h" |
18 | #include <QEvent> |
19 | #include <QGuiApplication> |
20 | #include <QLibraryInfo> |
21 | #include <QPixmap> |
22 | #include <QPoint> |
23 | #include <QString> |
24 | #include <QTimer> |
25 | #include <QVersionNumber> |
26 | #include <QWaylandClientExtensionTemplate> |
27 | #include <QWindow> |
28 | #include <qpa/qplatformnativeinterface.h> |
29 | #include <qpa/qplatformwindow_p.h> |
30 | |
31 | constexpr const char *c_kdeXdgForeignExportedProperty("_kde_xdg_foreign_exported_v2" ); |
32 | constexpr const char *c_kdeXdgForeignImportedProperty("_kde_xdg_foreign_imported_v2" ); |
33 | constexpr const char *c_kdeXdgForeignPendingHandleProperty("_kde_xdg_foreign_pending_handle" ); |
34 | |
35 | class WindowManagement : public QWaylandClientExtensionTemplate<WindowManagement>, public QtWayland::org_kde_plasma_window_management |
36 | { |
37 | public: |
38 | WindowManagement() |
39 | : QWaylandClientExtensionTemplate<WindowManagement>(17) |
40 | { |
41 | } |
42 | |
43 | void org_kde_plasma_window_management_show_desktop_changed(uint32_t state) override |
44 | { |
45 | showingDesktop = state == show_desktop_enabled; |
46 | KWindowSystem::self()->showingDesktopChanged(showing: showingDesktop); |
47 | } |
48 | |
49 | bool showingDesktop = false; |
50 | }; |
51 | |
52 | WindowSystem::WindowSystem() |
53 | : QObject() |
54 | , KWindowSystemPrivateV2() |
55 | , m_lastToken(qEnvironmentVariable(varName: "XDG_ACTIVATION_TOKEN" )) |
56 | { |
57 | m_windowManagement = new WindowManagement; |
58 | } |
59 | |
60 | WindowSystem::~WindowSystem() |
61 | { |
62 | delete m_windowManagement; |
63 | } |
64 | |
65 | void WindowSystem::activateWindow(QWindow *win, long int time) |
66 | { |
67 | Q_UNUSED(time); |
68 | auto s = surfaceForWindow(window: win); |
69 | if (!s) { |
70 | return; |
71 | } |
72 | WaylandXdgActivationV1 *activation = WaylandXdgActivationV1::self(); |
73 | if (!activation->isActive()) { |
74 | return; |
75 | } |
76 | activation->activate(token: m_lastToken, surface: s); |
77 | } |
78 | |
79 | void WindowSystem::requestToken(QWindow *window, uint32_t serial, const QString &app_id) |
80 | { |
81 | if (window) { |
82 | window->create(); |
83 | } |
84 | wl_surface *wlSurface = surfaceForWindow(window); |
85 | |
86 | WaylandXdgActivationV1 *activation = WaylandXdgActivationV1::self(); |
87 | if (!activation->isActive()) { |
88 | // Ensure that xdgActivationTokenArrived is always emitted asynchronously |
89 | QTimer::singleShot(interval: 0, slot: [serial] { |
90 | Q_EMIT KWaylandExtras::self()->xdgActivationTokenArrived(serial, token: {}); |
91 | }); |
92 | return; |
93 | } |
94 | |
95 | auto waylandApp = qGuiApp->nativeInterface<QNativeInterface::QWaylandApplication>(); |
96 | auto seat = waylandApp ? waylandApp->lastInputSeat() : nullptr; |
97 | auto tokenReq = activation->requestXdgActivationToken(seat, surface: wlSurface, serial, app_id); |
98 | connect(sender: tokenReq, signal: &WaylandXdgActivationTokenV1::failed, context: KWindowSystem::self(), slot: [serial, app_id]() { |
99 | Q_EMIT KWaylandExtras::self()->xdgActivationTokenArrived(serial, token: {}); |
100 | }); |
101 | connect(sender: tokenReq, signal: &WaylandXdgActivationTokenV1::done, context: KWindowSystem::self(), slot: [serial](const QString &token) { |
102 | Q_EMIT KWaylandExtras::self()->xdgActivationTokenArrived(serial, token); |
103 | }); |
104 | } |
105 | |
106 | void WindowSystem::setCurrentToken(const QString &token) |
107 | { |
108 | m_lastToken = token; |
109 | } |
110 | |
111 | quint32 WindowSystem::lastInputSerial(QWindow *window) |
112 | { |
113 | Q_UNUSED(window) |
114 | if (auto waylandApp = qGuiApp->nativeInterface<QNativeInterface::QWaylandApplication>()) { |
115 | return waylandApp->lastInputSerial(); |
116 | } |
117 | return 0; |
118 | } |
119 | |
120 | void WindowSystem::setShowingDesktop(bool showing) |
121 | { |
122 | if (!m_windowManagement->isActive()) { |
123 | return; |
124 | } |
125 | m_windowManagement->show_desktop(state: showing ? WindowManagement::show_desktop_enabled : WindowManagement::show_desktop_disabled); |
126 | } |
127 | |
128 | bool WindowSystem::showingDesktop() |
129 | { |
130 | if (!m_windowManagement->isActive()) { |
131 | return false; |
132 | } |
133 | return m_windowManagement->showingDesktop; |
134 | } |
135 | |
136 | void WindowSystem::exportWindow(QWindow *window) |
137 | { |
138 | auto emitHandle = [window](const QString &handle) { |
139 | // Ensure that windowExported is always emitted asynchronously. |
140 | QMetaObject::invokeMethod( |
141 | object: window, |
142 | function: [window, handle] { |
143 | Q_EMIT KWaylandExtras::self()->windowExported(window, handle); |
144 | }, |
145 | type: Qt::QueuedConnection); |
146 | }; |
147 | |
148 | if (!window) { |
149 | return; |
150 | } |
151 | |
152 | window->create(); |
153 | |
154 | auto waylandWindow = window->nativeInterface<QNativeInterface::Private::QWaylandWindow>(); |
155 | if (!waylandWindow) { |
156 | emitHandle({}); |
157 | return; |
158 | } |
159 | |
160 | auto &exporter = WaylandXdgForeignExporterV2::self(); |
161 | if (!exporter.isActive()) { |
162 | emitHandle({}); |
163 | return; |
164 | } |
165 | |
166 | // We want to use QObject::property(char*) and use dynamic properties on the object rather than |
167 | // call QWaylandWindow::property(QString) and send it around. |
168 | WaylandXdgForeignExportedV2 *exported = waylandWindow->property(name: c_kdeXdgForeignExportedProperty).value<WaylandXdgForeignExportedV2 *>(); |
169 | if (!exported) { |
170 | exported = exporter.exportToplevel(surface: surfaceForWindow(window)); |
171 | exported->setParent(waylandWindow); |
172 | |
173 | waylandWindow->setProperty(name: c_kdeXdgForeignExportedProperty, value: QVariant::fromValue(value: exported)); |
174 | connect(sender: exported, signal: &QObject::destroyed, context: waylandWindow, slot: [waylandWindow] { |
175 | waylandWindow->setProperty(name: c_kdeXdgForeignExportedProperty, value: QVariant()); |
176 | }); |
177 | |
178 | connect(sender: exported, signal: &WaylandXdgForeignExportedV2::handleReceived, context: window, slot: [window](const QString &handle) { |
179 | Q_EMIT KWaylandExtras::self()->windowExported(window, handle); |
180 | }); |
181 | } |
182 | |
183 | if (!exported->handle().isEmpty()) { |
184 | emitHandle(exported->handle()); |
185 | } |
186 | } |
187 | |
188 | void WindowSystem::unexportWindow(QWindow *window) |
189 | { |
190 | auto waylandWindow = window ? window->nativeInterface<QNativeInterface::Private::QWaylandWindow>() : nullptr; |
191 | if (!waylandWindow) { |
192 | return; |
193 | } |
194 | |
195 | WaylandXdgForeignExportedV2 *exported = waylandWindow->property(name: c_kdeXdgForeignExportedProperty).value<WaylandXdgForeignExportedV2 *>(); |
196 | delete exported; |
197 | Q_ASSERT(!waylandWindow->property(c_kdeXdgForeignExportedProperty).isValid()); |
198 | } |
199 | |
200 | void WindowSystem::setMainWindow(QWindow *window, const QString &handle) |
201 | { |
202 | if (!window) { |
203 | return; |
204 | } |
205 | |
206 | window->create(); |
207 | auto waylandWindow = window->nativeInterface<QNativeInterface::Private::QWaylandWindow>(); |
208 | if (!waylandWindow) { |
209 | return; |
210 | } |
211 | |
212 | // We want to use QObject::property(char*) and use dynamic properties on the object rather than |
213 | // call QWaylandWindow::property(QString) and send it around. |
214 | auto *imported = waylandWindow->property(name: c_kdeXdgForeignImportedProperty).value<WaylandXdgForeignImportedV2 *>(); |
215 | // Window already parented with a different handle? Delete imported so we import the new one later. |
216 | if (imported && imported->handle() != handle) { |
217 | delete imported; |
218 | imported = nullptr; |
219 | Q_ASSERT(!waylandWindow->property(c_kdeXdgForeignImportedProperty).isValid()); |
220 | } |
221 | |
222 | // Don't bother. |
223 | if (handle.isEmpty()) { |
224 | return; |
225 | } |
226 | |
227 | if (window->isExposed()) { |
228 | doSetMainWindow(window, handle); |
229 | } else { |
230 | // We can only import an XDG toplevel. |
231 | // QWaylandWindow::surfaceRoleCreated is only in Qt 6.8, |
232 | // in earlier versions wait for the window be exposed, |
233 | // since QWaylandWindow::wlSurfaceCreated is too early. |
234 | #if QT_VERSION < QT_VERSION_CHECK(6, 8, 0) |
235 | window->setProperty(c_kdeXdgForeignPendingHandleProperty, handle); |
236 | window->installEventFilter(this); |
237 | #else |
238 | connect(sender: waylandWindow, signal: &QNativeInterface::Private::QWaylandWindow::surfaceRoleCreated, context: window, slot: [window, handle] { |
239 | doSetMainWindow(window, handle); |
240 | }); |
241 | #endif |
242 | } |
243 | } |
244 | |
245 | bool WindowSystem::eventFilter(QObject *watched, QEvent *event) |
246 | { |
247 | #if QT_VERSION < QT_VERSION_CHECK(6, 8, 0) |
248 | if (event->type() == QEvent::Expose) { |
249 | auto *window = static_cast<QWindow *>(watched); |
250 | if (window->isExposed()) { |
251 | const QString handle = window->property(c_kdeXdgForeignPendingHandleProperty).toString(); |
252 | if (!handle.isEmpty()) { |
253 | doSetMainWindow(window, handle); |
254 | window->setProperty(c_kdeXdgForeignPendingHandleProperty, QVariant()); |
255 | } |
256 | |
257 | window->removeEventFilter(this); |
258 | } |
259 | } |
260 | #endif |
261 | |
262 | return QObject::eventFilter(watched, event); |
263 | } |
264 | |
265 | void WindowSystem::doSetMainWindow(QWindow *window, const QString &handle) |
266 | { |
267 | Q_ASSERT(window); |
268 | Q_ASSERT(!handle.isEmpty()); |
269 | |
270 | auto waylandWindow = window->nativeInterface<QNativeInterface::Private::QWaylandWindow>(); |
271 | if (!waylandWindow) { |
272 | return; |
273 | } |
274 | |
275 | auto &importer = WaylandXdgForeignImporterV2::self(); |
276 | if (!importer.isActive()) { |
277 | return; |
278 | } |
279 | |
280 | Q_ASSERT(!waylandWindow->property(c_kdeXdgForeignImportedProperty).isValid()); |
281 | |
282 | WaylandXdgForeignImportedV2 *imported = importer.importToplevel(handle); |
283 | imported->set_parent_of(surfaceForWindow(window)); // foreign parent. |
284 | imported->setParent(waylandWindow); // memory owner. |
285 | |
286 | waylandWindow->setProperty(name: c_kdeXdgForeignImportedProperty, value: QVariant::fromValue(value: imported)); |
287 | connect(sender: imported, signal: &QObject::destroyed, context: waylandWindow, slot: [waylandWindow] { |
288 | waylandWindow->setProperty(name: c_kdeXdgForeignImportedProperty, value: QVariant()); |
289 | }); |
290 | |
291 | // Before Qt 6.10, Qt sets XDG Dialog modal only when it has a transient parent. |
292 | if (QLibraryInfo::version() < QVersionNumber(6, 10, 0)) { |
293 | auto *oldDialog = waylandWindow->findChild<WaylandXdgDialogV1 *>(); |
294 | if (window->modality() != Qt::NonModal && !oldDialog) { |
295 | auto &xdgDialog = WaylandXdgDialogWmV1::self(); |
296 | if (xdgDialog.isActive()) { |
297 | if (auto *xdgToplevel = xdgToplevelForWindow(window)) { |
298 | auto *dialog = xdgDialog.getDialog(toplevel: xdgToplevel); |
299 | dialog->set_modal(); |
300 | dialog->setParent(waylandWindow); |
301 | } |
302 | } |
303 | } else { |
304 | delete oldDialog; |
305 | } |
306 | } |
307 | } |
308 | |
309 | #include "moc_windowsystem.cpp" |
310 | |