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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <Qt5Instance.hxx>
+#include <Qt5Instance.moc>
+
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+
+#include <Qt5Bitmap.hxx>
+#include <Qt5Clipboard.hxx>
+#include <Qt5Data.hxx>
+#include <Qt5DragAndDrop.hxx>
+#include <Qt5FilePicker.hxx>
+#include <Qt5Frame.hxx>
+#include <Qt5Menu.hxx>
+#include <Qt5Object.hxx>
+#include <Qt5OpenGLContext.hxx>
+#include "Qt5SvpVirtualDevice.hxx"
+#include <Qt5System.hxx>
+#include <Qt5Timer.hxx>
+#include <Qt5VirtualDevice.hxx>
+
+#include <headless/svpvd.hxx>
+
+#include <QtCore/QAbstractEventDispatcher>
+#include <QtCore/QThread>
+#include <QtWidgets/QApplication>
+#include <QtWidgets/QWidget>
+
+#include <vclpluginapi.h>
+#include <tools/debug.hxx>
+#include <comphelper/flagguard.hxx>
+#include <sal/log.hxx>
+#include <osl/process.h>
+#include <unx/gstsink.hxx>
+#include <headless/svpbmp.hxx>
+
+#include <mutex>
+#include <condition_variable>
+
+namespace
+{
+/// TODO: not much Qt5 specific here? could be generalised, esp. for OSX...
+/// this subclass allows for the transfer of a closure for running on the main
+/// thread, to handle all the thread affine stuff in Qt5; the SolarMutex is
+/// "loaned" to the main thread for the execution of the closure.
+/// @note it doesn't work to just use "emit" and signals/slots to move calls to
+/// the main thread, because the other thread has the SolarMutex; the other
+/// thread (typically) cannot release SolarMutex, because then the main thread
+/// will handle all sorts of events and whatnot; this design ensures that the
+/// main thread only runs the passed closure (unless the closure releases
+/// SolarMutex itself, which should probably be avoided).
+class Qt5YieldMutex : public SalYieldMutex
+{
+public:
+ /// flag only accessed on main thread:
+ /// main thread has "borrowed" SolarMutex from another thread
+ bool m_bNoYieldLock = false;
+ /// members for communication from non-main thread to main thread
+ std::mutex m_RunInMainMutex;
+ std::condition_variable m_InMainCondition;
+ bool m_isWakeUpMain = false;
+ std::function<void()> m_Closure; ///< code for main thread to run
+ /// members for communication from main thread to non-main thread
+ std::condition_variable m_ResultCondition;
+ bool m_isResultReady = false;
+
+ virtual bool IsCurrentThread() const override;
+ virtual void doAcquire(sal_uInt32 nLockCount) override;
+ virtual sal_uInt32 doRelease(bool const bUnlockAll) override;
+};
+}
+
+bool Qt5YieldMutex::IsCurrentThread() const
+{
+ auto const* pSalInst(static_cast<Qt5Instance const*>(GetSalData()->m_pInstance));
+ assert(pSalInst);
+ if (pSalInst->IsMainThread() && m_bNoYieldLock)
+ {
+ return true; // main thread has borrowed SolarMutex
+ }
+ return SalYieldMutex::IsCurrentThread();
+}
+
+void Qt5YieldMutex::doAcquire(sal_uInt32 nLockCount)
+{
+ auto const* pSalInst(static_cast<Qt5Instance const*>(GetSalData()->m_pInstance));
+ assert(pSalInst);
+ if (!pSalInst->IsMainThread())
+ {
+ SalYieldMutex::doAcquire(nLockCount);
+ return;
+ }
+ if (m_bNoYieldLock)
+ {
+ return; // special case for main thread: borrowed from other thread
+ }
+ do // main thread acquire...
+ {
+ std::function<void()> func; // copy of closure on thread stack
+ {
+ std::unique_lock<std::mutex> g(m_RunInMainMutex);
+ if (m_aMutex.tryToAcquire())
+ {
+ // if there's a closure, the other thread holds m_aMutex
+ assert(!m_Closure);
+ m_isWakeUpMain = false;
+ --nLockCount; // have acquired once!
+ ++m_nCount;
+ break;
+ }
+ m_InMainCondition.wait(g, [this]() { return m_isWakeUpMain; });
+ m_isWakeUpMain = false;
+ std::swap(func, m_Closure);
+ }
+ if (func)
+ {
+ assert(!m_bNoYieldLock);
+ m_bNoYieldLock = true; // execute closure with borrowed SolarMutex
+ func();
+ m_bNoYieldLock = false;
+ std::scoped_lock<std::mutex> g(m_RunInMainMutex);
+ assert(!m_isResultReady);
+ m_isResultReady = true;
+ m_ResultCondition.notify_all(); // unblock other thread
+ }
+ } while (true);
+ SalYieldMutex::doAcquire(nLockCount);
+}
+
+sal_uInt32 Qt5YieldMutex::doRelease(bool const bUnlockAll)
+{
+ auto const* pSalInst(static_cast<Qt5Instance const*>(GetSalData()->m_pInstance));
+ assert(pSalInst);
+ if (pSalInst->IsMainThread() && m_bNoYieldLock)
+ {
+ return 1; // dummy value
+ }
+
+ std::scoped_lock<std::mutex> g(m_RunInMainMutex);
+ // read m_nCount before doRelease (it's guarded by m_aMutex)
+ bool const isReleased(bUnlockAll || m_nCount == 1);
+ sal_uInt32 nCount = SalYieldMutex::doRelease(bUnlockAll);
+ if (isReleased && !pSalInst->IsMainThread())
+ {
+ m_isWakeUpMain = true;
+ m_InMainCondition.notify_all(); // unblock main thread
+ }
+ return nCount;
+}
+
+// this could be abstracted to be independent of Qt5 by passing in the
+// event-trigger as another function parameter...
+// it could also be a template of the return type, then it could return the
+// result of func... but then how to handle the result in doAcquire?
+void Qt5Instance::RunInMainThread(std::function<void()> func)
+{
+ DBG_TESTSOLARMUTEX();
+ if (IsMainThread())
+ {
+ func();
+ return;
+ }
+
+ Qt5YieldMutex* const pMutex(static_cast<Qt5YieldMutex*>(GetYieldMutex()));
+ {
+ std::scoped_lock<std::mutex> g(pMutex->m_RunInMainMutex);
+ assert(!pMutex->m_Closure);
+ pMutex->m_Closure = func;
+ // unblock main thread in case it is blocked on condition
+ pMutex->m_isWakeUpMain = true;
+ pMutex->m_InMainCondition.notify_all();
+ }
+ // wake up main thread in case it is blocked on event queue
+ // TriggerUserEventProcessing() appears to be insufficient in case the
+ // main thread does QEventLoop::WaitForMoreEvents
+ Q_EMIT ImplRunInMainSignal();
+ {
+ std::unique_lock<std::mutex> g(pMutex->m_RunInMainMutex);
+ pMutex->m_ResultCondition.wait(g, [pMutex]() { return pMutex->m_isResultReady; });
+ pMutex->m_isResultReady = false;
+ }
+}
+
+void Qt5Instance::ImplRunInMain()
+{
+ SolarMutexGuard g; // trigger the dispatch code in Qt5YieldMutex::doAcquire
+ (void)this; // suppress unhelpful [loplugin:staticmethods]; can't be static
+}
+
+Qt5Instance::Qt5Instance(std::unique_ptr<QApplication>& pQApp, bool bUseCairo)
+ : SalGenericInstance(std::make_unique<Qt5YieldMutex>())
+ , m_postUserEventId(-1)
+ , m_bUseCairo(bUseCairo)
+ , m_pQApplication(std::move(pQApp))
+ , m_aUpdateStyleTimer("vcl::qt5 m_aUpdateStyleTimer")
+ , m_bUpdateFonts(false)
+{
+ ImplSVData* pSVData = ImplGetSVData();
+ if (bUseCairo)
+ pSVData->maAppData.mxToolkitName = OUString("qt5+cairo");
+ else
+ pSVData->maAppData.mxToolkitName = OUString("qt5");
+
+ m_postUserEventId = QEvent::registerEventType();
+
+ // this one needs to be blocking, so that the handling in main thread
+ // is processed before the thread emitting the signal continues
+ connect(this, SIGNAL(ImplYieldSignal(bool, bool)), this, SLOT(ImplYield(bool, bool)),
+ Qt::BlockingQueuedConnection);
+ connect(this, &Qt5Instance::ImplRunInMainSignal, this, &Qt5Instance::ImplRunInMain,
+ Qt::QueuedConnection); // no Blocking!
+
+ // this one needs to be queued non-blocking
+ // in order to have this event arriving to correct event processing loop
+ connect(this, &Qt5Instance::deleteObjectLaterSignal, this,
+ [](QObject* pObject) { Qt5Instance::deleteObjectLater(pObject); },
+ Qt::QueuedConnection);
+
+ m_aUpdateStyleTimer.SetTimeout(50);
+ m_aUpdateStyleTimer.SetInvokeHandler(LINK(this, Qt5Instance, updateStyleHdl));
+}
+
+Qt5Instance::~Qt5Instance()
+{
+ // force freeing the QApplication before freeing the arguments,
+ // as it uses references to the provided arguments!
+ m_pQApplication.reset();
+}
+
+void Qt5Instance::AfterAppInit()
+{
+ // set the default application icon via desktop file just on Wayland,
+ // as this otherwise overrides the individual desktop icons on X11.
+ if (QGuiApplication::platformName() == "wayland")
+ QGuiApplication::setDesktopFileName(QStringLiteral("libreoffice-startcenter.desktop"));
+ QGuiApplication::setLayoutDirection(AllSettings::GetLayoutRTL() ? Qt::RightToLeft
+ : Qt::LeftToRight);
+}
+
+void Qt5Instance::deleteObjectLater(QObject* pObject) { pObject->deleteLater(); }
+
+SalFrame* Qt5Instance::CreateChildFrame(SystemParentData* /*pParent*/, SalFrameStyleFlags nStyle)
+{
+ return new Qt5Frame(nullptr, nStyle, m_bUseCairo);
+}
+
+SalFrame* Qt5Instance::CreateFrame(SalFrame* pParent, SalFrameStyleFlags nStyle)
+{
+ assert(!pParent || dynamic_cast<Qt5Frame*>(pParent));
+ return new Qt5Frame(static_cast<Qt5Frame*>(pParent), nStyle, m_bUseCairo);
+}
+
+void Qt5Instance::DestroyFrame(SalFrame* pFrame)
+{
+ if (pFrame)
+ {
+ assert(dynamic_cast<Qt5Frame*>(pFrame));
+ Q_EMIT deleteObjectLaterSignal(static_cast<Qt5Frame*>(pFrame));
+ }
+}
+
+SalObject* Qt5Instance::CreateObject(SalFrame* pParent, SystemWindowData*, bool bShow)
+{
+ assert(!pParent || dynamic_cast<Qt5Frame*>(pParent));
+ return new Qt5Object(static_cast<Qt5Frame*>(pParent), bShow);
+}
+
+void Qt5Instance::DestroyObject(SalObject* pObject)
+{
+ if (pObject)
+ {
+ assert(dynamic_cast<Qt5Object*>(pObject));
+ Q_EMIT deleteObjectLaterSignal(static_cast<Qt5Object*>(pObject));
+ }
+}
+
+std::unique_ptr<SalVirtualDevice> Qt5Instance::CreateVirtualDevice(SalGraphics* pGraphics,
+ long& nDX, long& nDY,
+ DeviceFormat eFormat,
+ const SystemGraphicsData* pGd)
+{
+ if (m_bUseCairo)
+ {
+ SvpSalGraphics* pSvpSalGraphics = dynamic_cast<Qt5SvpGraphics*>(pGraphics);
+ assert(pSvpSalGraphics);
+ // tdf#127529 see SvpSalInstance::CreateVirtualDevice for the rare case of a non-null pPreExistingTarget
+ cairo_surface_t* pPreExistingTarget
+ = pGd ? static_cast<cairo_surface_t*>(pGd->pSurface) : nullptr;
+ std::unique_ptr<SalVirtualDevice> pVD(
+ new Qt5SvpVirtualDevice(eFormat, pSvpSalGraphics->getSurface(), pPreExistingTarget));
+ pVD->SetSize(nDX, nDY);
+ return pVD;
+ }
+ else
+ {
+ std::unique_ptr<SalVirtualDevice> pVD(new Qt5VirtualDevice(eFormat, 1));
+ pVD->SetSize(nDX, nDY);
+ return pVD;
+ }
+}
+
+std::unique_ptr<SalMenu> Qt5Instance::CreateMenu(bool bMenuBar, Menu* pVCLMenu)
+{
+ std::unique_ptr<SalMenu> pRet;
+ RunInMainThread([&pRet, bMenuBar, pVCLMenu]() {
+ Qt5Menu* pSalMenu = new Qt5Menu(bMenuBar);
+ pRet.reset(pSalMenu);
+ pSalMenu->SetMenu(pVCLMenu);
+ });
+ assert(pRet);
+ return pRet;
+}
+
+std::unique_ptr<SalMenuItem> Qt5Instance::CreateMenuItem(const SalItemParams& rItemData)
+{
+ return std::unique_ptr<SalMenuItem>(new Qt5MenuItem(&rItemData));
+}
+
+SalTimer* Qt5Instance::CreateSalTimer() { return new Qt5Timer(); }
+
+SalSystem* Qt5Instance::CreateSalSystem() { return new Qt5System; }
+
+std::shared_ptr<SalBitmap> Qt5Instance::CreateSalBitmap()
+{
+ if (m_bUseCairo)
+ return std::make_shared<SvpSalBitmap>();
+ else
+ return std::make_shared<Qt5Bitmap>();
+}
+
+bool Qt5Instance::ImplYield(bool bWait, bool bHandleAllCurrentEvents)
+{
+ // Re-acquire the guard for user events when called via Q_EMIT ImplYieldSignal
+ SolarMutexGuard aGuard;
+ bool wasEvent = DispatchUserEvents(bHandleAllCurrentEvents);
+ if (!bHandleAllCurrentEvents && wasEvent)
+ return true;
+
+ /**
+ * Quoting the Qt docs: [QAbstractEventDispatcher::processEvents] processes
+ * pending events that match flags until there are no more events to process.
+ */
+ SolarMutexReleaser aReleaser;
+ QAbstractEventDispatcher* dispatcher = QAbstractEventDispatcher::instance(qApp->thread());
+ if (bWait && !wasEvent)
+ wasEvent = dispatcher->processEvents(QEventLoop::WaitForMoreEvents);
+ else
+ wasEvent = dispatcher->processEvents(QEventLoop::AllEvents) || wasEvent;
+ return wasEvent;
+}
+
+bool Qt5Instance::DoYield(bool bWait, bool bHandleAllCurrentEvents)
+{
+ bool bWasEvent = false;
+ if (qApp->thread() == QThread::currentThread())
+ {
+ bWasEvent = ImplYield(bWait, bHandleAllCurrentEvents);
+ if (bWasEvent)
+ m_aWaitingYieldCond.set();
+ }
+ else
+ {
+ {
+ SolarMutexReleaser aReleaser;
+ bWasEvent = Q_EMIT ImplYieldSignal(false, bHandleAllCurrentEvents);
+ }
+ if (!bWasEvent && bWait)
+ {
+ m_aWaitingYieldCond.reset();
+ SolarMutexReleaser aReleaser;
+ m_aWaitingYieldCond.wait();
+ bWasEvent = true;
+ }
+ }
+ return bWasEvent;
+}
+
+bool Qt5Instance::AnyInput(VclInputFlags /*nType*/) { return false; }
+
+OUString Qt5Instance::GetConnectionIdentifier() { return OUString(); }
+
+void Qt5Instance::AddToRecentDocumentList(const OUString&, const OUString&, const OUString&) {}
+
+OpenGLContext* Qt5Instance::CreateOpenGLContext() { return new Qt5OpenGLContext; }
+
+bool Qt5Instance::IsMainThread() const
+{
+ return !qApp || (qApp->thread() == QThread::currentThread());
+}
+
+void Qt5Instance::TriggerUserEventProcessing()
+{
+ QApplication::postEvent(this, new QEvent(QEvent::Type(m_postUserEventId)));
+}
+
+void Qt5Instance::ProcessEvent(SalUserEvent aEvent)
+{
+ aEvent.m_pFrame->CallCallback(aEvent.m_nEvent, aEvent.m_pData);
+}
+
+Qt5FilePicker*
+Qt5Instance::createPicker(css::uno::Reference<css::uno::XComponentContext> const& context,
+ QFileDialog::FileMode eMode)
+{
+ if (!IsMainThread())
+ {
+ SolarMutexGuard g;
+ Qt5FilePicker* pPicker;
+ RunInMainThread([&, this]() { pPicker = createPicker(context, eMode); });
+ assert(pPicker);
+ return pPicker;
+ }
+
+ return new Qt5FilePicker(context, eMode);
+}
+
+css::uno::Reference<css::ui::dialogs::XFilePicker2>
+Qt5Instance::createFilePicker(const css::uno::Reference<css::uno::XComponentContext>& context)
+{
+ return css::uno::Reference<css::ui::dialogs::XFilePicker2>(
+ createPicker(context, QFileDialog::ExistingFile));
+}
+
+css::uno::Reference<css::ui::dialogs::XFolderPicker2>
+Qt5Instance::createFolderPicker(const css::uno::Reference<css::uno::XComponentContext>& context)
+{
+ return css::uno::Reference<css::ui::dialogs::XFolderPicker2>(
+ createPicker(context, QFileDialog::Directory));
+}
+
+css::uno::Reference<css::uno::XInterface>
+Qt5Instance::CreateClipboard(const css::uno::Sequence<css::uno::Any>& arguments)
+{
+ OUString sel;
+ if (arguments.getLength() == 0)
+ {
+ sel = "CLIPBOARD";
+ }
+ else if (arguments.getLength() != 1 || !(arguments[0] >>= sel))
+ {
+ throw css::lang::IllegalArgumentException("bad Qt5Instance::CreateClipboard arguments",
+ css::uno::Reference<css::uno::XInterface>(), -1);
+ }
+
+ // This could also use RunInMain, but SolarMutexGuard is enough
+ // since at this point we're not accessing the clipboard, just get the
+ // accessor to the clipboard.
+ SolarMutexGuard aGuard;
+
+ auto it = m_aClipboards.find(sel);
+ if (it != m_aClipboards.end())
+ return it->second;
+
+ css::uno::Reference<css::uno::XInterface> xClipboard = Qt5Clipboard::create(sel);
+ if (xClipboard.is())
+ m_aClipboards[sel] = xClipboard;
+
+ return xClipboard;
+}
+
+css::uno::Reference<css::uno::XInterface> Qt5Instance::CreateDragSource()
+{
+ return css::uno::Reference<css::uno::XInterface>(
+ static_cast<cppu::OWeakObject*>(new Qt5DragSource()));
+}
+
+css::uno::Reference<css::uno::XInterface> Qt5Instance::CreateDropTarget()
+{
+ return css::uno::Reference<css::uno::XInterface>(
+ static_cast<cppu::OWeakObject*>(new Qt5DropTarget()));
+}
+
+IMPL_LINK_NOARG(Qt5Instance, updateStyleHdl, Timer*, void)
+{
+ SolarMutexGuard aGuard;
+ SalFrame* pFrame = anyFrame();
+ if (pFrame)
+ {
+ pFrame->CallCallback(SalEvent::SettingsChanged, nullptr);
+ if (m_bUpdateFonts)
+ {
+ pFrame->CallCallback(SalEvent::FontChanged, nullptr);
+ m_bUpdateFonts = false;
+ }
+ }
+}
+
+void Qt5Instance::UpdateStyle(bool bFontsChanged)
+{
+ if (bFontsChanged)
+ m_bUpdateFonts = true;
+ if (!m_aUpdateStyleTimer.IsActive())
+ m_aUpdateStyleTimer.Start();
+}
+
+void* Qt5Instance::CreateGStreamerSink(const SystemChildWindow* pWindow)
+{
+#if ENABLE_GSTREAMER_1_0 && QT5_HAVE_GOBJECT
+ auto pSymbol = gstElementFactoryNameSymbol();
+ if (!pSymbol)
+ return nullptr;
+
+ const SystemEnvData* pEnvData = pWindow->GetSystemData();
+ if (!pEnvData)
+ return nullptr;
+
+ if (pEnvData->platform != SystemEnvData::Platform::Wayland)
+ return nullptr;
+
+ GstElement* pVideosink = pSymbol("qwidget5videosink", "qwidget5videosink");
+ if (pVideosink)
+ {
+ QWidget* pQWidget = static_cast<QWidget*>(pEnvData->pWidget);
+ g_object_set(G_OBJECT(pVideosink), "widget", pQWidget, nullptr);
+ }
+ else
+ {
+ SAL_WARN("vcl.qt5", "Couldn't initialize qwidget5videosink."
+ " Video playback might not work as expected."
+ " Please install Qt5 packages for QtGStreamer.");
+ // with no videosink explicitly set, GStreamer will open its own (misplaced) window(s) to display video
+ }
+
+ return pVideosink;
+#else
+ (void*)pWindow;
+ return nullptr;
+#endif
+}
+
+void Qt5Instance::AllocFakeCmdlineArgs(std::unique_ptr<char* []>& rFakeArgv,
+ std::unique_ptr<int>& rFakeArgc,
+ std::vector<FreeableCStr>& rFakeArgvFreeable)
+{
+ OString aVersion(qVersion());
+ SAL_INFO("vcl.qt5", "qt version string is " << aVersion);
+
+ const sal_uInt32 nParams = osl_getCommandArgCount();
+ OString aDisplay;
+ sal_uInt32 nDisplayValueIdx = 0;
+ OUString aParam, aBin;
+
+ for (sal_uInt32 nIdx = 0; nIdx < nParams; ++nIdx)
+ {
+ osl_getCommandArg(nIdx, &aParam.pData);
+ if (aParam != "-display")
+ continue;
+ ++nIdx;
+ nDisplayValueIdx = nIdx;
+ }
+
+ osl_getExecutableFile(&aParam.pData);
+ osl_getSystemPathFromFileURL(aParam.pData, &aBin.pData);
+ OString aExec = OUStringToOString(aBin, osl_getThreadTextEncoding());
+
+ std::vector<FreeableCStr> aFakeArgvFreeable;
+ aFakeArgvFreeable.reserve(4);
+ aFakeArgvFreeable.emplace_back(strdup(aExec.getStr()));
+ aFakeArgvFreeable.emplace_back(strdup("--nocrashhandler"));
+ if (nDisplayValueIdx)
+ {
+ aFakeArgvFreeable.emplace_back(strdup("-display"));
+ osl_getCommandArg(nDisplayValueIdx, &aParam.pData);
+ aDisplay = OUStringToOString(aParam, osl_getThreadTextEncoding());
+ aFakeArgvFreeable.emplace_back(strdup(aDisplay.getStr()));
+ }
+ rFakeArgvFreeable.swap(aFakeArgvFreeable);
+
+ const int nFakeArgc = rFakeArgvFreeable.size();
+ rFakeArgv.reset(new char*[nFakeArgc]);
+ for (int i = 0; i < nFakeArgc; i++)
+ rFakeArgv[i] = rFakeArgvFreeable[i].get();
+
+ rFakeArgc.reset(new int);
+ *rFakeArgc = nFakeArgc;
+}
+
+void Qt5Instance::MoveFakeCmdlineArgs(std::unique_ptr<char* []>& rFakeArgv,
+ std::unique_ptr<int>& rFakeArgc,
+ std::vector<FreeableCStr>& rFakeArgvFreeable)
+{
+ m_pFakeArgv = std::move(rFakeArgv);
+ m_pFakeArgc = std::move(rFakeArgc);
+ m_pFakeArgvFreeable.swap(rFakeArgvFreeable);
+}
+
+std::unique_ptr<QApplication> Qt5Instance::CreateQApplication(int& nArgc, char** pArgv)
+{
+ QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+ // for scaled icons in the native menus
+ QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
+
+ FreeableCStr session_manager;
+ if (getenv("SESSION_MANAGER") != nullptr)
+ {
+ session_manager.reset(strdup(getenv("SESSION_MANAGER")));
+ unsetenv("SESSION_MANAGER");
+ }
+
+ std::unique_ptr<QApplication> pQApp = std::make_unique<QApplication>(nArgc, pArgv);
+
+ if (session_manager != nullptr)
+ {
+ // coverity[tainted_string] - trusted source for setenv
+ setenv("SESSION_MANAGER", session_manager.get(), 1);
+ }
+
+ QApplication::setQuitOnLastWindowClosed(false);
+ return pQApp;
+}
+
+extern "C" {
+VCLPLUG_QT5_PUBLIC SalInstance* create_SalInstance()
+{
+ static const bool bUseCairo = (nullptr != getenv("SAL_VCL_QT5_USE_CAIRO"));
+
+ std::unique_ptr<char* []> pFakeArgv;
+ std::unique_ptr<int> pFakeArgc;
+ std::vector<FreeableCStr> aFakeArgvFreeable;
+ Qt5Instance::AllocFakeCmdlineArgs(pFakeArgv, pFakeArgc, aFakeArgvFreeable);
+
+ std::unique_ptr<QApplication> pQApp
+ = Qt5Instance::CreateQApplication(*pFakeArgc, pFakeArgv.get());
+
+ Qt5Instance* pInstance = new Qt5Instance(pQApp, bUseCairo);
+ pInstance->MoveFakeCmdlineArgs(pFakeArgv, pFakeArgc, aFakeArgvFreeable);
+
+ new Qt5Data(pInstance);
+
+ return pInstance;
+}
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */