path: root/src/plugins/platforms/cocoa/qcocoawindowmanager.mm

// Copyright (C) 2019 The Qt Company Ltd. // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #include <AppKit/AppKit.h> #include "qcocoawindowmanager.h" #include "qcocoawindow.h" #include <QtCore/private/qcore_mac_p.h> #include <QtGui/qguiapplication.h> #include <QtGui/qwindow.h> QT_BEGIN_NAMESPACE QCocoaWindowManager::QCocoaWindowManager() { if (NSApp) { initialize(); } else { m_applicationDidFinishLaunchingObserver = QMacNotificationObserver(nil, NSApplicationDidFinishLaunchingNotification, [this] { initialize(); }); } } void QCocoaWindowManager::initialize() { Q_ASSERT(NSApp); // Whenever the modalWindow property of NSApplication changes we have a new // modal session running. Observing the app modal window instead of our own // event dispatcher sessions allows us to track session started by native // APIs as well. We need to check the initial state as well, in case there // is already a modal session running. m_modalSessionObserver = QMacKeyValueObserver( NSApp, @"modalWindow", [this] { modalSessionChanged(); }, NSKeyValueObservingOptionInitial | NSKeyValueObservingOptionNew); } void QCocoaWindowManager::modalSessionChanged() { // Make sure that no window is overlapping the modal window. This can // happen for e.g. splash screens, which have the NSPopUpMenuWindowLevel. for (auto *window : QGuiApplication::topLevelWindows()) { auto *platformWindow = static_cast<QCocoaWindow*>(window->handle()); if (!platformWindow) continue; auto naturalWindowLevel = platformWindow->windowLevel(window->flags()); if (naturalWindowLevel > NSModalPanelWindowLevel) { NSWindow *nativeWindow = platformWindow->nativeWindow(); if (NSApp.modalWindow) { // Lower window to that of the modal windows, but no less nativeWindow.level = NSModalPanelWindowLevel; if ([nativeWindow isVisible]) [nativeWindow orderBack:nil]; } else { // Restore window's natural window level, whatever that was nativeWindow.level = naturalWindowLevel; } } } // Our worksWhenModal implementation is declarative and will normally be picked // up by AppKit when needed, but to make sure AppKit also reflects the state // in the window tag, so that the window can be ordered front by clicking it, // we need to explicitly call setWorksWhenModal. for (id window in NSApp.windows) { if ([window isKindOfClass:[QNSPanel class]]) { auto *panel = static_cast<QNSPanel *>(window); // Call setter to tell AppKit that our state has changed [panel setWorksWhenModal:panel.worksWhenModal]; } } } QT_END_NAMESPACE