diff options
Diffstat (limited to 'src/client/qwaylandwindow.cpp')
-rw-r--r-- | src/client/qwaylandwindow.cpp | 180 |
1 files changed, 152 insertions, 28 deletions
diff --git a/src/client/qwaylandwindow.cpp b/src/client/qwaylandwindow.cpp index 32c5b1e6e..4532bc236 100644 --- a/src/client/qwaylandwindow.cpp +++ b/src/client/qwaylandwindow.cpp @@ -62,6 +62,7 @@ #include <QtGui/private/qwindow_p.h> #include <QtCore/QDebug> +#include <QtCore/QThread> QT_BEGIN_NAMESPACE @@ -74,6 +75,7 @@ QWaylandWindow *QWaylandWindow::mMouseGrab = nullptr; QWaylandWindow::QWaylandWindow(QWindow *window) : QPlatformWindow(window) , mDisplay(waylandScreen()->display()) + , mFrameQueue(mDisplay->createEventQueue()) , mResizeAfterSwap(qEnvironmentVariableIsSet("QT_WAYLAND_RESIZE_AFTER_SWAP")) { static WId id = 1; @@ -357,6 +359,8 @@ void QWaylandWindow::sendExposeEvent(const QRect &rect) { if (!(mShellSurface && mShellSurface->handleExpose(rect))) QWindowSystemInterface::handleExposeEvent(window(), rect); + else + qCDebug(lcQpaWayland) << "sendExposeEvent: intercepted by shell extension, not sending"; mLastExposeGeometry = rect; } @@ -541,18 +545,11 @@ void QWaylandWindow::handleScreenRemoved(QScreen *qScreen) void QWaylandWindow::attach(QWaylandBuffer *buffer, int x, int y) { Q_ASSERT(!buffer->committed()); - if (mFrameCallback) { - wl_callback_destroy(mFrameCallback); - mFrameCallback = nullptr; - } - if (buffer) { - mFrameCallback = frame(); - wl_callback_add_listener(mFrameCallback, &QWaylandWindow::callbackListener, this); - mWaitingForFrameSync = true; + handleUpdate(); buffer->setBusy(); - attach(buffer->buffer(), x, y); + QtWayland::wl_surface::attach(buffer->buffer(), x, y); } else { QtWayland::wl_surface::attach(nullptr, 0, 0); } @@ -613,32 +610,61 @@ void QWaylandWindow::commit() } const wl_callback_listener QWaylandWindow::callbackListener = { - QWaylandWindow::frameCallback + [](void *data, wl_callback *callback, uint32_t time) { + Q_UNUSED(callback); + Q_UNUSED(time); + auto *window = static_cast<QWaylandWindow*>(data); + if (window->thread() != QThread::currentThread()) + QMetaObject::invokeMethod(window, [=] { window->handleFrameCallback(); }, Qt::QueuedConnection); + else + window->handleFrameCallback(); + } }; -void QWaylandWindow::frameCallback(void *data, struct wl_callback *callback, uint32_t time) +void QWaylandWindow::handleFrameCallback() { - Q_UNUSED(time); - Q_UNUSED(callback); - QWaylandWindow *self = static_cast<QWaylandWindow*>(data); + bool wasExposed = isExposed(); - self->mWaitingForFrameSync = false; - if (self->mUpdateRequested) { - self->mUpdateRequested = false; - self->deliverUpdateRequest(); + if (mFrameCallbackTimerId != -1) { + killTimer(mFrameCallbackTimerId); + mFrameCallbackTimerId = -1; } + + mWaitingForFrameCallback = false; + mFrameCallbackTimedOut = false; + + if (!wasExposed && isExposed()) + sendExposeEvent(QRect(QPoint(), geometry().size())); + if (wasExposed && hasPendingUpdateRequest()) + deliverUpdateRequest(); } QMutex QWaylandWindow::mFrameSyncMutex; -void QWaylandWindow::waitForFrameSync() +bool QWaylandWindow::waitForFrameSync(int timeout) { QMutexLocker locker(&mFrameSyncMutex); - if (!mWaitingForFrameSync) - return; - mDisplay->flushRequests(); - while (mWaitingForFrameSync) - mDisplay->blockingReadEvents(); + if (!mWaitingForFrameCallback) + return true; + + wl_proxy_set_queue(reinterpret_cast<wl_proxy *>(mFrameCallback), mFrameQueue); + mDisplay->dispatchQueueWhile(mFrameQueue, [&]() { return mWaitingForFrameCallback; }, timeout); + + if (mWaitingForFrameCallback) { + qCDebug(lcWaylandBackingstore) << "Didn't receive frame callback in time, window should now be inexposed"; + mFrameCallbackTimedOut = true; + mWaitingForUpdate = false; + sendExposeEvent(QRect()); + } + + // Stop current frame timer if any, can't use killTimer directly, because we might be on a diffent thread + if (mFrameCallbackTimerId != -1) { + int id = mFrameCallbackTimerId; + mFrameCallbackTimerId = -1; + QMetaObject::invokeMethod(this, [=] { killTimer(id); }, Qt::QueuedConnection); + } + + return !mWaitingForFrameCallback; } QMargins QWaylandWindow::frameMargins() const @@ -976,6 +1002,9 @@ bool QWaylandWindow::isExposed() const if (!window()->isVisible()) return false; + if (mFrameCallbackTimedOut) + return false; + if (mShellSurface) return mShellSurface->isExposed(); @@ -1051,12 +1080,107 @@ QVariant QWaylandWindow::property(const QString &name, const QVariant &defaultVa return m_properties.value(name, defaultValue); } +void QWaylandWindow::timerEvent(QTimerEvent *event) +{ + if (event->timerId() == mFallbackUpdateTimerId) { + killTimer(mFallbackUpdateTimerId); + mFallbackUpdateTimerId = -1; + qCDebug(lcWaylandBackingstore) << "mFallbackUpdateTimer timed out"; + + if (!isExposed()) { + qCDebug(lcWaylandBackingstore) << "Fallback update timer: Window not exposed," + << "not delivering update request."; + return; + } + + if (mWaitingForUpdate && hasPendingUpdateRequest() && !mWaitingForFrameCallback) { + qCWarning(lcWaylandBackingstore) << "Delivering update request through fallback timer," + << "may not be in sync with display"; + deliverUpdateRequest(); + } + } + + if (event->timerId() == mFrameCallbackTimerId) { + killTimer(mFrameCallbackTimerId); + mFrameCallbackTimerId = -1; + qCDebug(lcWaylandBackingstore) << "Didn't receive frame callback in time, window should now be inexposed"; + mFrameCallbackTimedOut = true; + mWaitingForUpdate = false; + sendExposeEvent(QRect()); + } +} + void QWaylandWindow::requestUpdate() { - if (!mWaitingForFrameSync) - QPlatformWindow::requestUpdate(); - else - mUpdateRequested = true; + Q_ASSERT(hasPendingUpdateRequest()); // should be set by QPA + + // If we have a frame callback all is good and will be taken care of there + if (mWaitingForFrameCallback) + return; + + // If we've already called deliverUpdateRequest(), but haven't seen any attach+commit/swap yet + if (mWaitingForUpdate) { + // Ideally, we should just have returned here, but we're not guaranteed that the client + // will actually update, so start this timer to deliver another request update after a while + // *IF* the client doesn't update. + int fallbackTimeout = 100; + mFallbackUpdateTimerId = startTimer(fallbackTimeout); + return; + } + + // Some applications (such as Qt Quick) depend on updates being delivered asynchronously, + // so use invokeMethod to delay the delivery a bit. + QMetaObject::invokeMethod(this, [this] { + // Things might have changed in the meantime + if (hasPendingUpdateRequest() && !mWaitingForUpdate && !mWaitingForFrameCallback) + deliverUpdateRequest(); + }, Qt::QueuedConnection); +} + +// Should be called whenever we commit a buffer (directly through wl_surface.commit or indirectly +// with eglSwapBuffers) to know when it's time to commit the next one. +// Can be called from the render thread (without locking anything) so make sure to not make races in this method. +void QWaylandWindow::handleUpdate() +{ + // TODO: Should sync subsurfaces avoid requesting frame callbacks? + + if (mFrameCallback) { + wl_callback_destroy(mFrameCallback); + mFrameCallback = nullptr; + } + + if (mFallbackUpdateTimerId != -1) { + // Ideally, we would stop the fallback timer here, but since we're on another thread, + // it's not allowed. Instead we set mFallbackUpdateTimer to -1 here, so we'll just + // ignore it if it times out before it's cleaned up by the invokeMethod call. + int id = mFallbackUpdateTimerId; + mFallbackUpdateTimerId = -1; + QMetaObject::invokeMethod(this, [=] { killTimer(id); }, Qt::QueuedConnection); + } + + mFrameCallback = frame(); + wl_callback_add_listener(mFrameCallback, &QWaylandWindow::callbackListener, this); + mWaitingForFrameCallback = true; + mWaitingForUpdate = false; + + // Stop current frame timer if any, can't use killTimer directly, see comment above. + if (mFrameCallbackTimerId != -1) { + int id = mFrameCallbackTimerId; + mFrameCallbackTimerId = -1; + QMetaObject::invokeMethod(this, [=] { killTimer(id); }, Qt::QueuedConnection); + } + + // Start a timer for handling the case when the compositor stops sending frame callbacks. + QMetaObject::invokeMethod(this, [=] { // Again; can't do it directly + if (mWaitingForFrameCallback) + mFrameCallbackTimerId = startTimer(100); + }, Qt::QueuedConnection); +} + +void QWaylandWindow::deliverUpdateRequest() +{ + mWaitingForUpdate = true; + QPlatformWindow::deliverUpdateRequest(); } void QWaylandWindow::addAttachOffset(const QPoint point) |