Attachment 117372 Details for Bug 91574 – my random code-reading notes on some of the oddness here.

my random code-reading notes on some of the oddness here.

slideshow-norender.txt (text/plain), 61.24 KB, created by Michael Meeks on 2015-07-21 21:15:38 UTC

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Creator: Michael Meeks

Created: 2015-07-21 21:15:38 UTC

Size: 61.24 KB

patch

obsolete

>Clock updates only when clicking on it at the bottom.
>
>https://bugs.documentfoundation.org/show_bug.cgi?id=91574
>
>$ SAL_LOG=+INFO.sdext.presenter+INFO.canvas ./soffice file:///c:/temp/slides.odp
>canvas/source/directx/dx_spritecanvas.cxx:71: SpriteCanvas::initialize called
>info:sdext.presenter:2748:2740:sdext/source/presenter/PresenterScreen.cxx:478: Display number is 0
>info:sdext.presenter:2748:2740:sdext/source/presenter/PresenterScreen.cxx:523: Get presenter screen for screen 1
>
>	External display showing ...
>
>slideshow/source/engine/eventqueue.cxx:172: EventQueue: heartbeat
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05184638 at position (1400.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05184638 at position (9576.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05184638 at position (20076.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05184638 at position (1400.000000,837.000000)
>
>	these guys never rendered again (?)
>
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 051847F0 at position (1400.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05184798 at position (9576.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05184740 at position (20076.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 051846E8 at position (1400.000000,837.000000)
>slideshow/source/engine/activitiesqueue.cxx:89: ActivitiesQueue: outer loop heartbeat
>canvas/source/vcl/spritecanvas.cxx:80: VCLSpriteCanvas::initialize called
>
>	+ the above guys render again ...
>	+ only just initialized the display ! ;-)
>
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183DF8 at position (1400.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183DA0 at position (9576.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183D48 at position (20076.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183CF0 at position (1400.000000,837.000000)
>slideshow/source/engine/eventqueue.cxx:172: EventQueue: heartbeat
>canvas/source/directx/dx_spritehelper.cxx:128: SpriteHelper::redraw(): output pos is (10.000000, 874.000000)
>
>	+ now done some setup.
>
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183400 at position (1400.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183400 at position (9576.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183400 at position (20076.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183400 at position (1400.000000,837.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183400 at position (13838.000000,10206.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183400 at position (13838.000000,10206.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183400 at position (13838.000000,10206.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183400 at position (13838.000000,10206.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 051847F0 at position (1400.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183DF8 at position (1400.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05184798 at position (9576.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183DA0 at position (9576.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05184740 at position (20076.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183D48 at position (20076.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 051846E8 at position (1400.000000,837.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183CF0 at position (1400.000000,837.000000)
>slideshow/source/engine/activitiesqueue.cxx:89: ActivitiesQueue: outer loop heartbeat
>slideshow/source/engine/eventqueue.cxx:172: EventQueue: heartbeat
>
>	Still nothing much visible apparently (?)
>
>...
>slideshow/source/engine/activitiesqueue.cxx:89: ActivitiesQueue: outer loop heartbeat
>slideshow/source/engine/eventqueue.cxx:172: EventQueue: heartbeat
>slideshow/source/engine/activitiesqueue.cxx:89: ActivitiesQueue: outer loop heartbeat
>slideshow/source/engine/eventqueue.cxx:172: EventQueue: heartbeat
>
>canvas/source/directx/dx_spritehelper.cxx:128: SpriteHelper::redraw(): output pos is (10.000000, 874.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183DA0 at position (1400.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183DA0 at position (9576.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183DA0 at position (20076.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05183DA0 at position (1400.000000,837.000000)
>slideshow/source/engine/activitiesqueue.cxx:89: ActivitiesQueue: outer loop heartbeat
>slideshow/source/engine/eventqueue.cxx:172: EventQueue: heartbeat
>canvas/source/directx/dx_spritehelper.cxx:128: SpriteHelper::redraw(): output pos is (10.000000, 874.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05182430 at position (1400.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05182430 at position (9576.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05182430 at position (20076.000000,19131.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05182430 at position (1400.000000,837.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05182430 at position (13838.000000,10206.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05182430 at position (13838.000000,10206.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05182430 at position (13838.000000,10206.000000)
>slideshow/source/engine/shapes/viewshape.cxx:555: ViewShape::render(): rendering shape 05182430 at position (13838.000000,10206.000000)
>slideshow/source/engine/activitiesqueue.cxx:89: ActivitiesQueue: outer loop heartbeat
>slideshow/source/engine/eventqueue.cxx:172: EventQueue: heartbeat
>slideshow/source/engine/activitiesqueue.cxx:89: ActivitiesQueue: outer loop heartbeat
>...
>
>void PresenterSlideSorter::Paint (const awt::Rectangle& rUpdateBox)
>{
>	... fun [!] ...
>
>void SAL_CALL PresenterHelpView::windowPaint (const css::awt::PaintEvent& rEvent)
>    throw (RuntimeException, std::exception)
>{
>    Paint(rEvent.UpdateRect);
>}
>
>
>* could it be rendered into some back-buffer we're not pushing to
>  the screen ? and the slidey bit inside some sytem window>
>	+ possibly - but there is a black hairline border around 'Baa'
>		+ and an odd rectangle top-left of screen
>	+ There is a window there - but with nothing rendered into it.
>
>PresenterButton.hxx:91:    // XPaintListener
>PresenterButton.hxx:93:    virtual void SAL_CALL windowPaint (const css::awt::
>
>        mxWindow->addWindowListener(this);
>        mxWindow->addPaintListener(this);
>
>	* we should ask the mxWindow what to paint onto (?) ...
>		+ fun.
>
>void SAL_CALL PresenterNotesView::windowPaint (const awt::PaintEvent& rEvent)
>    throw (RuntimeException, std::exception)
>		* etc. [!] ...
>
>	* what fun [!] =)
>
>
>** Clock at bottom not painting / re-rendering properly ...
>
>** Awful:
>
>void PresenterClockTimer::AddListener (const SharedListener& rListener)
>{
>    osl::MutexGuard aGuard (maMutex);
>
>    maListeners.push_back(rListener);
>
>    // Create a timer task when the first listener is added.
>    if (mnTimerTaskId==PresenterTimer::NotAValidTaskId)
>    {
>        mnTimerTaskId = PresenterTimer::ScheduleRepeatedTask(
>            ::boost::bind(&PresenterClockTimer::CheckCurrentTime, this, _1),
>            0,
>            250000000 /*ns*/);
>    }
>}
>
>void CurrentTimeLabel::TimeHasChanged (const oslDateTime& rCurrentTime)
>{
>    SetText(maTimeFormatter.FormatTime(rCurrentTime));
>    Invalidate(false);
>}
>
>...
>
>void PresenterButton::Invalidate()
>{
>    mpPresenterController->GetPaintManager()->Invalidate(mxWindow);
>}
>
>void PresenterPaintManager::Invalidate (
>    const css::uno::Reference<css::awt::XWindow>& rxWindow,
>    const bool bSynchronous)
>
>void Element::Invalidate (const bool bSynchronous)
>{
>    OSL_ASSERT(mpToolBar.is());
>    mpToolBar->InvalidateArea(GetBoundingBox(), bSynchronous);
>}
>
>* Looks like a synchronous render is what refreshes the screen ... ;-)
>	+ fun [!] - why !?
>
>...
>
>    if ((nInvalidateFlags & awt::InvalidateStyle::TRANSPARENT) != 0)
>    {
>        // Window is transparent and parent window(s) have to be painted as
>        // well.  Invalidate the parent explicitly.
>        if (mxPresenterHelper.is() && mxParentWindowPeer.is())
>        {
>            const awt::Rectangle aBBox (
>                mxPresenterHelper->getWindowExtentsRelative(rxWindow, mxParentWindow));
>            mxParentWindowPeer->invalidateRect(aBBox, nInvalidateFlags);
>        }
>    }
>    else
>    {
>        Reference<awt::XWindowPeer> xPeer (rxWindow, UNO_QUERY);
>        if (xPeer.is())
>            xPeer->invalidate(nInvalidateFlags);
>    }
>
>    if (bSynchronous)
>        nInvalidateMode |= awt::InvalidateStyle::UPDATE;
>			...
>
>void VCLXWindow::invalidateRect( const ::com::sun::star::awt::Rectangle& rRect, sal_Int16 nInvalidateFlags ) throw(::com::sun::star::uno::RuntimeException, std::exception)
>{
>    SolarMutexGuard aGuard;
>
>    if ( GetWindow() )
>        GetWindow()->Invalidate( VCLRectangle(rRect), static_cast<InvalidateFlags>(nInvalidateFlags) );
>}
>
>void Window::ImplInvalidate( const vcl::Region* pRegion, InvalidateFlags nFlags )
>{
>...
>    if ( nFlags & InvalidateFlags::Update )
>        pOpaqueWindow->Update();        // start painting at the opaque parent
>
>	** When we do synchronous rendering all is well ... otherwise not.
>
>
>
>        case VCLEVENT_WINDOW_PAINT:
>        {
>            if ( mpImpl->getPaintListeners().getLength() )
>            {
>                ::com::sun::star::awt::PaintEvent aEvent;
>                aEvent.Source = static_cast<cppu::OWeakObject*>(this);
>                aEvent.UpdateRect = AWTRectangle( *static_cast<Rectangle*>(rVclWindowEvent.GetData()) );
>                aEvent.Count = 0;
>                mpImpl->getPaintListeners().windowPaint( aEvent );
>            }
>        }
>
>* Should this have something different ? ...
>	+ hmm ...
>
>void VCLXWindow::ProcessWindowEvent( const VclWindowEvent& rVclWindowEvent )
>
>
>* VclWindowEvent [!] -> 531 hits ... urgh ...
>	+ VCLEVENT_WINDOW_PAINT
>		+ 3x real hits ;-)
>
>toolkit/source/awt/vclxwindow.cxx-        }
>toolkit/source/awt/vclxwindow.cxx-        break;
>toolkit/source/awt/vclxwindow.cxx-
>toolkit/source/awt/vclxwindow.cxx:        case VCLEVENT_WINDOW_PAINT:
>toolkit/source/awt/vclxwindow.cxx-        {
>toolkit/source/awt/vclxwindow.cxx-            if ( mpImpl->getPaintListeners().getLength() )
>toolkit/source/awt/vclxwindow.cxx-            {
>--
>vcl/osx/a11yfocustracker.cxx-    VclSimpleEvent const *pEvent = static_cast<VclSimpleEvent const *>(pCaller);
>vcl/osx/a11yfocustracker.cxx-    switch (pEvent->GetId())
>vcl/osx/a11yfocustracker.cxx-    {
>vcl/osx/a11yfocustracker.cxx:    case VCLEVENT_WINDOW_PAINT:
>vcl/osx/a11yfocustracker.cxx-        pFocusTracker-> toolbox_open_floater( getWindow(pEvent) );
>vcl/osx/a11yfocustracker.cxx-        break;
>vcl/osx/a11yfocustracker.cxx-    case VCLEVENT_WINDOW_GETFOCUS:
>--
>vcl/source/window/paint.cxx-
>vcl/source/window/paint.cxx-void Window::Paint(vcl::RenderContext& /*rRenderContext*/, const Rectangle& rRect)
>vcl/source/window/paint.cxx-{
>vcl/source/window/paint.cxx:    CallEventListeners(VCLEVENT_WINDOW_PAINT, const_cast<Rectangle *>(&rRect));
>vcl/source/window/paint.cxx-}
>vcl/source/window/paint.cxx-
>vcl/source/window/paint.cxx-void Window::SetPaintTransparent( bool bTransparent )
>
>
>* Fun ? ...
>
>    CallEventListeners(VCLEVENT_WINDOW_PAINT, const_cast<Rectangle *>(&rRect));
>
>
>vcl/event.hxx:    /// RenderContext to which we should draw - can be a VirtualDevice or anything.
>vcl/event.hxx:    VclPtr<vcl::RenderContext> mpRenderContext;
>vcl/event.hxx:    UserDrawEvent(vcl::Window* pWindow, vcl::RenderContext* pRenderContext,
>vcl/event.hxx:    vcl::RenderContext* GetRenderContext() const { return mpRenderContext; }
>vcl/event.hxx:    , mpRenderContext(nullptr)
>vcl/event.hxx:inline UserDrawEvent::UserDrawEvent(vcl::Window* pWindow, vcl::RenderContext* pRenderContext,
>vcl/event.hxx:    , mpRenderContext(pRenderContext)
>
>
>IMPL_LINK_NOARG_TYPED(Window, ImplHandlePaintHdl, Idle *, void)
>...
>    else if ( mpWindowImpl->mbReallyVisible )
>    {
>        ImplCallOverlapPaint();
>    }
>
>...
>        OutputDevice *pOutDev = GetOutDev();
>        pOutDev->BeginPaint();
>        ImplCallPaint(NULL, NULL, mpWindowImpl->mnPaintFlags /*| IMPL_PAINT_CHECKRTL */);
>        pOutDev->EndPaint();
>...
>
>    nPaintFlags = mpWindowImpl->mnPaintFlags & ~(IMPL_PAINT_PAINT);
>
>    PaintHelper aHelper(this, rBuffer, nPaintFlags);
>
>    if (mpWindowImpl->mnPaintFlags & IMPL_PAINT_PAINT)
>        aHelper.DoPaint(pRegion);
>    else
>        mpWindowImpl->mnPaintFlags = 0;
>
>    PostPaint(*this);
>
>... fun ... [!?] ...
>
>    Urgh - ...
>
>
>** finding the parent window (!?) ...
>	+ what is that ... - where does it come from !? ...
>		+ 
>
>void SAL_CALL PresenterPaneBase::initialize (const Sequence<Any>& rArguments)
>    throw (Exception, RuntimeException, std::exception)
>
>	+ urgh ... - 
>
>            if ( ! (rArguments[1] >>= mxParentWindow))
>            {
>                throw lang::IllegalArgumentException(
>                    "PresenterPane: invalid parent window",
>                    static_cast<XWeak*>(this),
>                    1);
>            }
>
>Reference<XResource> PresenterPaneFactory::CreatePane (
>    const Reference<XResourceId>& rxPaneId,
>    const OUString& rsTitle,
>    const Reference<drawing::framework::XPane>& rxParentPane,
>    const bool bIsSpritePane)
>{
>    Reference<XComponentContext> xContext (mxComponentContextWeak);
>    Reference<lang::XMultiComponentFactory> xFactory (
>        xContext->getServiceManager(), UNO_QUERY_THROW);
>
>    // Create a border window and canvas and store it in the pane
>    // container.
>
>    // Create the pane.
>    ::rtl::Reference<PresenterPaneBase> xPane;
>    if (bIsSpritePane)
>    {
>        xPane = ::rtl::Reference<PresenterPaneBase>(
>            new PresenterSpritePane(xContext, mpPresenterController));
>    }
>    else
>    {
>        xPane = ::rtl::Reference<PresenterPaneBase>(
>            new PresenterPane(xContext, mpPresenterController));
>    }
>
>    // Supply arguments.
>    Sequence<Any> aArguments (6);
>    aArguments[0] <<= rxPaneId;
>    aArguments[1] <<= rxParentPane->getWindow();
>    aArguments[2] <<= rxParentPane->getCanvas();
>    aArguments[3] <<= rsTitle;
>    aArguments[4] <<= Reference<drawing::framework::XPaneBorderPainter>(
>        static_cast<XWeak*>(mpPresenterController->GetPaneBorderPainter().get()),
>        UNO_QUERY);
>    aArguments[5] <<= !bIsSpritePane;
>    xPane->initialize(aArguments);
>
>
>We get this pane from:
>
>    Reference<XPane> xParentPane (xCC->getResource(rxPaneId->getAnchor()), UNO_QUERY);
>    if ( ! xParentPane.is())
>        return NULL;
>
>
>** We have a getWindow' method in sd::framework::Pane
>	 this is called as we start ...
>
>	+ returns a 0x0 size FocusForwardingWindow (it seems)
>	    + hmm ...
>		* And another FocusForwardingWindow [hmm]
>
>
>
>sd/source/ui/factories/Pane.cxx:
>
>Reference<awt::XWindow> SAL_CALL Pane::getWindow()
>    throw (RuntimeException, std::exception)
>{
>    return mxWindow;
>}
>
>...
>
>
>Pane::Pane (
>    const Reference<XResourceId>& rxPaneId,
>    vcl::Window* pWindow)
>    throw ()
>    : PaneInterfaceBase(MutexOwner::maMutex),
>      mxPaneId(rxPaneId),
>      mpWindow(pWindow),
>      mxWindow(VCLUnoHelper::GetInterface(pWindow))
>{
>}
>
>	* so where does 'pWindow' come from ? ...
>
>sd/source/ui/framework/factories/FullScreenPane.cxx:FullScreenPane::~FullScreenPane() throw()
>	+ is that it ?
>
>sd/source/ui/framework/factories/FrameWindowPane.hxx
>sd/source/ui/framework/factories/FrameWindowPane.cxx
>
>/** This subclass is not necessary anymore.  We can remove it if that
>    remains so.
>*/
>class FrameWindowPane
>    : public Pane
>{
>public:
>    FrameWindowPane (
>        const ::com::sun::star::uno::Reference<
>            com::sun::star::drawing::framework::XResourceId>& rxPaneId,
>        vcl::Window* pWindow);
>    virtual ~FrameWindowPane() throw();
>
>
>sd/source/ui/framework/factories/BasicPaneFactory.cxx:        xPane = new FrameWindowPane(rxPaneId, mpViewShellBase->GetViewWindow());
>
>
>FullScreenPane::FullScreenPane (
>    const Reference<XComponentContext>& rxComponentContext,
>    const Reference<XResourceId>& rxPaneId,
>    const vcl::Window* pViewShellWindow)
>    : FrameWindowPane(rxPaneId,NULL),
>      mxComponentContext(rxComponentContext)
>{
>    vcl::Window* pParent = NULL;
>    mpWorkWindow.reset(VclPtr<WorkWindow>::Create(
>
>        pParent,
>        0));  // For debugging (non-fullscreen) use WB_BORDER | WB_MOVEABLE | WB_SIZEABLE));
>
>	** Probably this is our baby !? ...
>
>
>
>
>Argh -> a nightmare ...
>
>
>* What is all this junk:
>
>    Paint(rEvent.UpdateRect, aViewState);
>
>    // Make the back buffer visible.
>    Reference<rendering::XSpriteCanvas> xSpriteCanvas (mxCanvas, UNO_QUERY);
>    if (xSpriteCanvas.is())
>        xSpriteCanvas->updateScreen(sal_False);
>
>...
>
>    sal_Bool SAL_CALL SpriteCanvas::updateScreen( sal_Bool bUpdateAll ) throw (uno::RuntimeException, std::exception)
>    {
>        SolarMutexGuard aGuard;
>
>        // avoid repaints on hidden window (hidden: not mapped to
>        // screen). Return failure, since the screen really has _not_
>        // been updated (caller should try again later)
>        return mbIsVisible && maCanvasHelper.updateScreen(bUpdateAll,
>                                                                  mbSurfaceDirty);
>    }
>
>
>** Debugging fun in:
>
>	+ SpriteCanvasHelper::updateScreen -> whoop ;-)
>		+ why such a long delay ? ...
>
>
>
>
>** Single threaded - and the 1st render comes from:
>
>
>Thread 1 (Thread 0x7ffff7e719c0 (LWP 1403)):
>#0  vclcanvas::SpriteCanvasHelper::updateScreen (this=0x7fffc01af938, bUpdateAll=false, io_bSurfaceDirty=@0x7fffc01af9c8: true) at /data/opt/libreoffice/master/canvas/source/vcl/spritecanvashelper.cxx:254
>#1  0x00007fffa71bc5a3 in vclcanvas::SpriteCanvas::updateScreen (this=0x7fffc01af808, bUpdateAll=0 '\000') at /data/opt/libreoffice/master/canvas/source/vcl/spritecanvas.cxx:153
>#2  0x00007fffc25cc359 in sd::presenter::CanvasUpdateRequester::Callback (this=0x207d1a0) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:95
>#3  0x00007fffc25cc2ff in sd::presenter::CanvasUpdateRequester::LinkStubCallback (instance=0x207d1a0, data=0x0) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:90
>
>IMPL_LINK_NOARG(CanvasUpdateRequester, Callback)
>{
>    mnUserEventId = 0;
>    if (mxCanvas.is())
>    {
>        mxCanvas->updateScreen(mbUpdateFlag);
>        mbUpdateFlag = false;
>    }
>    return 0;
>}
>
>#4  0x00007ffff0754b0f in Link<void*, long>::Call (this=0x1b16e50, data=0x0) at /data/opt/libreoffice/master/include/tools/link.hxx:127
>#5  0x00007ffff09142da in ImplHandleUserEvent (pSVEvent=0x20ebb10) at /data/opt/libreoffice/master/vcl/source/window/winproc.cxx:2024
>
>	Interesting ...
>
>#6  0x00007ffff0915898 in ImplWindowFrameProc (_pWindow=0x11bf530, nEvent=22, pEvent=0x20ebb10) at /data/opt/libreoffice/master/vcl/source/window/winproc.cxx:2585
>#7  0x00007ffff0ddd182 in SalFrame::CallCallback (this=0x11bff20, nEvent=22, pEvent=0x20ebb10) at /data/opt/libreoffice/master/vcl/inc/salframe.hxx:246
>#8  0x00007ffff0ddcd47 in SalGenericDisplay::DispatchInternalEvent (this=0xffb880) at /data/opt/libreoffice/master/vcl/generic/app/gendisp.cxx:90
>#9  0x00007fffe2f620fb in GtkData::userEventFn (data=0x622cf0) at /data/opt/libreoffice/master/vcl/unx/gtk/app/gtkdata.cxx:942
>#10 0x00007fffe2f62156 in call_userEventFn (data=0x622cf0) at /data/opt/libreoffice/master/vcl/unx/gtk/app/gtkdata.cxx:952
>#11 0x00007fffec21c316 in g_main_dispatch (context=0xfa3110) at gmain.c:3066
>#12 g_main_context_dispatch (context=context@entry=0xfa3110) at gmain.c:3642
>#13 0x00007fffec21c668 in g_main_context_iterate (context=context@entry=0xfa3110, block=block@entry=0, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3713
>#14 0x00007fffec21c70c in g_main_context_iteration (context=0xfa3110, may_block=0) at gmain.c:3774
>#15 0x00007fffe2f61045 in GtkData::Yield (this=0x622cf0, bWait=false, bHandleAllCurrentEvents=true) at /data/opt/libreoffice/master/vcl/unx/gtk/app/gtkdata.cxx:577
>#16 0x00007fffe2f65359 in GtkInstance::DoYield (this=0x622c10, bWait=false, bHandleAllCurrentEvents=true, nReleased=0) at /data/opt/libreoffice/master/vcl/unx/gtk/app/gtkinst.cxx:406
>#17 0x00007ffff0d21ec8 in ImplYield (i_bWait=false, i_bAllEvents=true, nReleased=0) at /data/opt/libreoffice/master/vcl/source/app/svapp.cxx:361
>#18 0x00007ffff0d1e5b4 in Application::Reschedule (i_bAllEvents=true) at /data/opt/libreoffice/master/vcl/source/app/svapp.cxx:385
>
>* Hmm - are we wedged here somehow ? ... waiting for a user-event ? ...
>
>#19 0x00007fffc26335a4 in sd::SlideshowImpl::PostYieldListener (this=0x7fffae61fa90) at /data/opt/libreoffice/master/sd/source/ui/slideshow/slideshowimpl.cxx:1804
>#20 0x00007fffc2633527 in sd::SlideshowImpl::LinkStubPostYieldListener (instance=0x7fffae61fa90, data=0x0) at /data/opt/libreoffice/master/sd/source/ui/slideshow/slideshowimpl.cxx:1792
>#21 0x00007ffff0754b0f in Link<void*, long>::Call (this=0x2039060, data=0x0) at /data/opt/libreoffice/master/include/tools/link.hxx:127
>#22 0x00007ffff0d2b7e7 in VclEventListeners2::callListeners (this=0x2031760, i_pEvent=0x0) at /data/opt/libreoffice/master/vcl/source/app/vclevent.cxx:152
>#23 0x00007ffff0d21f46 in ImplYield (i_bWait=true, i_bAllEvents=false, nReleased=0) at /data/opt/libreoffice/master/vcl/source/app/svapp.cxx:380
>#24 0x00007ffff0d1e5ce in Application::Yield () at /data/opt/libreoffice/master/vcl/source/app/svapp.cxx:390
>#25 0x00007ffff0d1e573 in Application::Execute () at /data/opt/libreoffice/master/vcl/source/app/svapp.cxx:336
>#26 0x00007ffff77ef935 in desktop::Desktop::Main (this=0x7fffffffd980) at /data/opt/libreoffice/master/desktop/source/app/app.cxx:1589
>#27 0x00007ffff0d268f5 in ImplSVMain () at /data/opt/libreoffice/master/vcl/source/app/svmain.cxx:162
>#28 0x00007ffff0d26a11 in SVMain () at /data/opt/libreoffice/master/vcl/source/app/svmain.cxx:196
>#29 0x00007ffff78361d0 in soffice_main () at /data/opt/libreoffice/master/desktop/source/app/sofficemain.cxx:96
>#30 0x0000000000400954 in sal_main () at /data/opt/libreoffice/master/desktop/source/app/main.c:48
>#31 0x000000000040093a in main (argc=2, argv=0x7fffffffdc78) at /data/opt/libreoffice/master/desktop/source/app/main.c:47
>
>
>void CanvasUpdateRequester::RequestUpdate (const bool bUpdateAll)
>{
>    if (mnUserEventId == 0)
>    {
>        mbUpdateFlag = bUpdateAll;
>        mnUserEventId = Application::PostUserEvent(LINK(this, CanvasUpdateRequester, Callback));
>    }
>    else
>    {
>        mbUpdateFlag |= bUpdateAll;
>    }
>}
>
>** Fun [!] ...
>	+ interesting ...
>
>	* where is that guy called from ?
>		* fun [!] ...
>
>sd/source/ui/presenter/PresenterCanvas.cxx:        mpUpdateRequester = CanvasUpdateRequester::Instance(mxUpdateCanvas);
>sd/source/ui/presenter/PresenterCanvas.cxx:            mpUpdateRequester = CanvasUpdateRequester::Instance(mxUpdateCanvas);
>sd/source/ui/presenter/PresenterCanvas.hxx:#include "CanvasUpdateRequester.hxx"
>sd/source/ui/presenter/PresenterCanvas.hxx:    ::boost::shared_ptr<CanvasUpdateRequester> mpUpdateRequester;
>sd/source/ui/presenter/PresenterHelper.cxx:#include "CanvasUpdateRequester.hxx"
>
>
>PresenterCanvas::PresenterCanvas (
>...
>    if (mxUpdateCanvas.is())
>        mpUpdateRequester = CanvasUpdateRequester::Instance(mxUpdateCanvas);
>
>        mpUpdateRequester = CanvasUpdateRequester::Instance(mxUpdateCanvas);
>
>sal_Bool SAL_CALL PresenterCanvas::updateScreen (sal_Bool bUpdateAll)
>    throw (css::uno::RuntimeException, std::exception)
>{
>    ThrowIfDisposed();
>
>    mbOffsetUpdatePending = true;
>    if (mpUpdateRequester.get() != NULL)
>    {
>        mpUpdateRequester->RequestUpdate(bUpdateAll);
>        return sal_True;
>    }
>    else
>    {
>        return sal_False;
>    }
>}
>
>...
>
>** Complete and utter mess ! **
>
>** Where does the RequestUpdate get queued from ?
>	+ this looks like the slideshow canvas update but ...
>
>#0  sd::presenter::CanvasUpdateRequester::RequestUpdate (this=<error reading variable: can't compute CFA for this frame>, bUpdateAll=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:81
>#1  0x00007fffc25d0bcb in sd::presenter::PresenterCanvas::updateScreen (this=<error reading variable: can't compute CFA for this frame>, bUpdateAll=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/presenter/PresenterCanvas.cxx:562
>#2  0x00007fffe86a875d in cppcanvas::internal::ImplSpriteCanvas::updateScreen (this=0x166a6d0, bUpdateAll=false) at /data/opt/libreoffice/master/cppcanvas/source/wrapper/implspritecanvas.cxx:86
>#3  0x00007fffa7bedae4 in slideshow::internal::(anonymous namespace)::SlideView::updateScreen (this=0x7fffc0216e58) at /data/opt/libreoffice/master/slideshow/source/engine/slideview.cxx:859
>#4  0x00007fffa7b14cc0 in boost::_mfi::cmf0<bool, slideshow::internal::View>::call<boost::shared_ptr<slideshow::internal::UnoView> const> (this=0x7fffffffc090, u=boost::shared_ptr {<slideshow::internal::View> = {<slideshow::internal::ViewLayer> = {_vptr.ViewLayer = 0x7fffa7ffa320 <vtable for slideshow::internal::(anonymous namespace)::SlideView+544>}, <No data fields>}, <No data fields>}) at /data/opt/libreoffice/master/workdir/UnpackedTarball/boost/boost/bind/mem_fn_template.hpp:105
>#5  0x00007fffa7b12bad in boost::_mfi::cmf0<bool, slideshow::internal::View>::operator()<boost::shared_ptr<slideshow::internal::UnoView> > (this=0x7fffffffc090, u=boost::shared_ptr {<slideshow::internal::View> = {<slideshow::internal::ViewLayer> = {_vptr.ViewLayer = 0x7fffa7ffa320 <vtable for slideshow::internal::(anonymous namespace)::SlideView+544>}, <No data fields>}, <No data fields>}) at /data/opt/libreoffice/master/workdir/UnpackedTarball/boost/boost/bind/mem_fn_template.hpp:115
>#6  0x00007fffa7b11bf3 in std::for_each<__gnu_debug::_Safe_iterator<__gnu_cxx::__normal_iterator<boost::shared_ptr<slideshow::internal::UnoView> const*, std::__cxx1998::vector<boost::shared_ptr<slideshow::internal::UnoView>, std::allocator<boost::shared_ptr<slideshow::internal::UnoView> > > >, std::__debug::vector<boost::shared_ptr<slideshow::internal::UnoView>, std::allocator<boost::shared_ptr<slideshow::internal::UnoView> > > >, boost::_mfi::cmf0<bool, slideshow::internal::View> > (__first=boost::shared_ptr {<slideshow::internal::View> = {<slideshow::internal::ViewLayer> = {_vptr.ViewLayer = 0x7fffa7ffa320 <vtable for slideshow::internal::(anonymous namespace)::SlideView+544>}, <No data fields>}, <No data fields>}, __last=empty boost::shared_ptr, __f=...) at /usr/include/c++/4.8/bits/stl_algo.h:4440
>#7  0x00007fffa7b10d8a in slideshow::internal::ScreenUpdater::requestImmediateUpdate (this=0x7fffdf53d9e8) at /data/opt/libreoffice/master/slideshow/source/engine/screenupdater.cxx:200
>#8  0x00007fffa7c465a1 in slideshow::internal::WaitSymbol::setVisible (this=0x203e040, bVisible=true) at /data/opt/libreoffice/master/slideshow/source/engine/waitsymbol.cxx:100
>#9  0x00007fffa7bc43b5 in slideshow::internal::WaitSymbol::show (this=0x203e040) at /data/opt/libreoffice/master/slideshow/source/engine/waitsymbol.hxx:55
>#10 0x00007fffa7bb97ae in (anonymous namespace)::SlideShowImpl::requestWaitSymbol (this=0x7fffdf53d808) at /data/opt/libreoffice/master/slideshow/source/engine/slideshowimpl.cxx:959
>#11 0x00007fffa7bb6c56 in (anonymous namespace)::SlideShowImpl::WaitSymbolLock::WaitSymbolLock (this=0x7fffffffc560, rSlideShowImpl=...) at /data/opt/libreoffice/master/slideshow/source/engine/slideshowimpl.cxx:411
>#12 0x00007fffa7bbf9b8 in (anonymous namespace)::SlideShowImpl::notifySlideAnimationsEnded (this=0x7fffdf53d808) at /data/opt/libreoffice/master/slideshow/source/engine/slideshowimpl.cxx:2313
>#13 0x00007fffa7bc2d07 in boost::_mfi::mf0<void, (anonymous namespace)::SlideShowImpl>::operator() (this=0x20e72b0, t=...) at /data/opt/libreoffice/master/workdir/UnpackedTarball/boost/boost/bind/mem_fn_template.hpp:70
>#14 0x00007fffa7bc211e in boost::_bi::list1<boost::reference_wrapper<(anonymous namespace)::SlideShowImpl> >::operator()<boost::_mfi::mf0<void, (anonymous namespace)::SlideShowImpl>, boost::_bi::list0> (this=0x20e72c0, f=..., a=...) at /data/opt/libreoffice/master/workdir/UnpackedTarball/boost/boost/bind/bind.hpp:253
>#15 0x00007fffa7bc1d15 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, (anonymous namespace)::SlideShowImpl>, boost::_bi::list1<boost::reference_wrapper<(anonymous namespace)::SlideShowImpl> > >::operator() (this=0x20e72b0) at /data/opt/libreoffice/master/workdir/UnpackedTarball/boost/boost/bind/bind_template.hpp:20
>#16 0x00007fffa7bc181e in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, (anonymous namespace)::SlideShowImpl>, boost::_bi::list1<boost::reference_wrapper<(anonymous namespace)::SlideShowImpl> > >, void>::invoke (function_obj_ptr=...) at /data/opt/libreoffice/master/workdir/UnpackedTarball/boost/boost/function/function_template.hpp:153
>#17 0x00007fffa7a9b294 in boost::function0<void>::operator() (this=0x20e72a8) at /data/opt/libreoffice/master/workdir/UnpackedTarball/boost/boost/function/function_template.hpp:767
>#18 0x00007fffa7a9abbe in slideshow::internal::Delay::fire (this=0x20e7290) at /data/opt/libreoffice/master/slideshow/source/engine/delayevent.cxx:32
>#19 0x00007fffa7afc23c in slideshow::internal::EventQueue::process_ (this=0x7fffdf53d9f0, bFireAllEvents=false) at /data/opt/libreoffice/master/slideshow/source/engine/eventqueue.cxx:225
>#20 0x00007fffa7afbd99 in slideshow::internal::EventQueue::process (this=0x7fffdf53d9f0) at /data/opt/libreoffice/master/slideshow/source/engine/eventqueue.cxx:167
>#21 0x00007fffa7bbee0c in (anonymous namespace)::SlideShowImpl::update (this=0x7fffdf53d808, nNextTimeout=@0x7fffffffcd48: 0) at /data/opt/libreoffice/master/slideshow/source/engine/slideshowimpl.cxx:2040
>#22 0x00007fffc2633969 in sd::SlideshowImpl::updateSlideShow (this=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/slideshow/slideshowimpl.cxx:1829
>#23 0x00007fffc263374a in sd::SlideshowImpl::updateHdl (this=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/slideshow/slideshowimpl.cxx:1789
>#24 0x00007fffc263372b in sd::SlideshowImpl::LinkStubupdateHdl (instance=<error reading variable: can't compute CFA for this frame>, data=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/slideshow/slideshowimpl.cxx:1787
>#25 0x00007ffff0d29ad3 in Link<Timer*, void>::Call (this=0x7fffae633618, data=0x7fffae6335f8) at /data/opt/libreoffice/master/include/tools/link.hxx:127
>#26 0x00007ffff0d29843 in Timer::Invoke (this=0x7fffae6335f8) at /data/opt/libreoffice/master/vcl/source/app/timer.cxx:117
>#27 0x00007ffff0cff84c in ImplSchedulerData::Invoke (this=0x20f2a30) at /data/opt/libreoffice/master/vcl/source/app/scheduler.cxx:38
>#28 0x00007ffff0cffb11 in Scheduler::ProcessTaskScheduling (bTimer=false) at /data/opt/libreoffice/master/vcl/source/app/scheduler.cxx:127
>#29 0x00007ffff0d21e4c in ImplYield (i_bWait=false, i_bAllEvents=true, nReleased=0) at /data/opt/libreoffice/master/vcl/source/app/svapp.cxx:347
>#30 0x00007ffff0d1e5b4 in Application::Reschedule (i_bAllEvents=true) at /data/opt/libreoffice/master/vcl/source/app/svapp.cxx:385
>#31 0x00007fffc263383b in sd::SlideshowImpl::PostYieldListener (this=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/slideshow/slideshowimpl.cxx:1805
>#32 0x00007fffc263376f in sd::SlideshowImpl::LinkStubPostYieldListener (instance=<error reading variable: can't compute CFA for this frame>, data=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/slideshow/slideshowimpl.cxx:1792
>#33 0x00007ffff0754b0f in Link<void*, long>::Call (this=0x20d8690, data=0x0) at /data/opt/libreoffice/master/include/tools/link.hxx:127
>#34 0x00007ffff0d2b7e7 in VclEventListeners2::callListeners (this=0x202d590, i_pEvent=0x0) at /data/opt/libreoffice/master/vcl/source/app/vclevent.cxx:152
>#35 0x00007ffff0d21f46 in ImplYield (i_bWait=true, i_bAllEvents=false, nReleased=0) at /data/opt/libreoffice/master/vcl/source/app/svapp.cxx:380
>#36 0x00007ffff0d1e5ce in Application::Yield () at /data/opt/libreoffice/master/vcl/source/app/svapp.cxx:390
>#37 0x00007ffff0d1e573 in Application::Execute () at /data/opt/libreoffice/master/vcl/source/app/svapp.cxx:336
>#38 0x00007ffff77ef935 in desktop::Desktop::Main (this=0x7fffffffd980) at /data/opt/libreoffice/master/desktop/source/app/app.cxx:1589
>#39 0x00007ffff0d268f5 in ImplSVMain () at /data/opt/libreoffice/master/vcl/source/app/svmain.cxx:162
>#40 0x00007ffff0d26a11 in SVMain () at /data/opt/libreoffice/master/vcl/source/app/svmain.cxx:196
>#41 0x00007ffff78361d0 in soffice_main () at /data/opt/libreoffice/master/desktop/source/app/sofficemain.cxx:96
>#42 0x0000000000400954 in sal_main () at /data/opt/libreoffice/master/desktop/source/app/main.c:48
>#43 0x000000000040093a in main (argc=2, argv=0x7fffffffdc78) at /data/opt/libreoffice/master/desktop/source/app/main.c:47
>(gdb) 
>
>... next is ...
>
>Breakpoint 3, sd::presenter::CanvasUpdateRequester::RequestUpdate (this=<error reading variable: can't compute CFA for this frame>, bUpdateAll=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:81
>81              SAL_DEBUG("request update - post new user event " << bUpdateAll);
>(gdb) bt
>#0  sd::presenter::CanvasUpdateRequester::RequestUpdate (this=<error reading variable: can't compute CFA for this frame>, bUpdateAll=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:81
>#1  0x00007fffc25d0bcb in sd::presenter::PresenterCanvas::updateScreen (this=<error reading variable: can't compute CFA for this frame>, bUpdateAll=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/presenter/PresenterCanvas.cxx:562
>#2  0x00007fffad103911 in sdext::presenter::PresenterPaneBorderPainter::Renderer::PaintBorder (this=0x213e710, rsTitle="Current Slide (1 of 2)", rBBox=..., rUpdateBox=..., rsPaneURL="private:resource/pane/Presenter/Pane1") at /data/opt/libreoffice/master/sdext/source/presenter/PresenterPaneBorderPainter.cxx:503
>#3  0x00007fffad1023a4 in sdext::presenter::PresenterPaneBorderPainter::paintBorder (this=0x7fffc01b3798, rsPaneBorderStyleName="private:resource/pane/Presenter/Pane1", rxCanvas=uno::Reference to (sd::presenter::PresenterCanvas *) 0x7fffdc09b928, rOuterBorderRectangle=..., rRepaintArea=..., rsTitle="Current Slide (1 of 2)") at /data/opt/libreoffice/master/sdext/source/presenter/PresenterPaneBorderPainter.cxx:229
>#4  0x00007fffad10149f in sdext::presenter::PresenterPaneBase::PaintBorder (this=0x7fffc01b16c8, rUpdateBox=...) at /data/opt/libreoffice/master/sdext/source/presenter/PresenterPaneBase.cxx:410
>#5  0x00007fffad0fef09 in sdext::presenter::PresenterPane::windowPaint (this=0x7fffc01b16c8, rEvent=...) at /data/opt/libreoffice/master/sdext/source/presenter/PresenterPane.cxx:139
>#6  0x00007ffff247b192 in PaintListenerMultiplexer::windowPaint (this=0x1ffcfe8, evt=...) at /data/opt/libreoffice/master/toolkit/source/helper/listenermultiplexer.cxx:122
>#7  0x00007ffff22fca86 in VCLXWindow::ProcessWindowEvent (this=0x7fffdc3b6498, rVclWindowEvent=...) at /data/opt/libreoffice/master/toolkit/source/awt/vclxwindow.cxx:470
>#8  0x00007ffff22fc753 in VCLXWindow::WindowEventListener (this=0x7fffdc3b6498, pEvent=0x7fffffffc9d0) at /data/opt/libreoffice/master/toolkit/source/awt/vclxwindow.cxx:417
>#9  0x00007ffff22fc5bf in VCLXWindow::LinkStubWindowEventListener (instance=0x7fffdc3b6498, data=0x7fffffffc9d0) at /data/opt/libreoffice/master/toolkit/source/awt/vclxwindow.cxx:408
>#10 0x00007ffff0754b0f in Link<void*, long>::Call (this=0x156ffa0, data=0x7fffffffc9d0) at /data/opt/libreoffice/master/include/tools/link.hxx:127
>#11 0x00007ffff0d2aeb4 in VclEventListeners::Call (this=0x1ffca00, pEvent=0x7fffffffc9d0) at /data/opt/libreoffice/master/vcl/source/app/vclevent.cxx:63
>#12 0x00007ffff0803e6e in vcl::Window::CallEventListeners (this=0x1ffd1a0, nEvent=1000, pData=0x7fffffffcca8) at /data/opt/libreoffice/master/vcl/source/window/event.cxx:214
>#13 0x00007ffff074b733 in vcl::Window::Paint (this=0x1ffd1a0, rRect=Rectangle = {...}) at /data/opt/libreoffice/master/vcl/source/window/paint.cxx:994
>#14 0x00007ffff074891f in PaintHelper::DoPaint (this=0x7fffffffcc70, pRegion=0x1ffc800) at /data/opt/libreoffice/master/vcl/source/window/paint.cxx:268
>#15 0x00007ffff0749b80 in vcl::Window::ImplCallPaint (this=0x1ffd1a0, rBuffer=..., pRegion=0x1ffc800, nPaintFlags=62) at /data/opt/libreoffice/master/vcl/source/window/paint.cxx:566
>#16 0x00007ffff07496b2 in PaintHelper::~PaintHelper (this=0x7fffffffcdb0, __in_chrg=<optimized out>) at /data/opt/libreoffice/master/vcl/source/window/paint.cxx:505
>#17 0x00007ffff0749bd1 in vcl::Window::ImplCallPaint (this=0x166bd70, rBuffer=..., pRegion=0x21071d0, nPaintFlags=60) at /data/opt/libreoffice/master/vcl/source/window/paint.cxx:570
>#18 0x00007ffff07496b2 in PaintHelper::~PaintHelper (this=0x7fffffffcef0, __in_chrg=<optimized out>) at /data/opt/libreoffice/master/vcl/source/window/paint.cxx:505
>#19 0x00007ffff0749bd1 in vcl::Window::ImplCallPaint (this=0x2003a90, rBuffer=..., pRegion=0x1fd4570, nPaintFlags=60) at /data/opt/libreoffice/master/vcl/source/window/paint.cxx:570
>#20 0x00007ffff07496b2 in PaintHelper::~PaintHelper (this=0x7fffffffd030, __in_chrg=<optimized out>) at /data/opt/libreoffice/master/vcl/source/window/paint.cxx:505
>#21 0x00007ffff0749bd1 in vcl::Window::ImplCallPaint (this=0x166b380, rBuffer=..., pRegion=0x0, nPaintFlags=60) at /data/opt/libreoffice/master/vcl/source/window/paint.cxx:570
>#22 0x00007ffff0749cea in vcl::Window::ImplCallOverlapPaint (this=0x166b380) at /data/opt/libreoffice/master/vcl/source/window/paint.cxx:591
>#23 0x00007ffff0749ec1 in vcl::Window::ImplHandlePaintHdl (this=0x166b380) at /data/opt/libreoffice/master/vcl/source/window/paint.cxx:620
>#24 0x00007ffff0749da9 in vcl::Window::LinkStubImplHandlePaintHdl (instance=0x166b380, data=0x2040350) at /data/opt/libreoffice/master/vcl/source/window/paint.cxx:602
>#25 0x00007ffff074f6df in Link<Idle*, void>::Call (this=0x2040370, data=0x2040350) at /data/opt/libreoffice/master/include/tools/link.hxx:127
>#26 0x00007ffff0cf8eb1 in Idle::Invoke (this=0x2040350) at /data/opt/libreoffice/master/vcl/source/app/idle.cxx:26
>#27 0x00007ffff0cff84c in ImplSchedulerData::Invoke (this=0x1568e40) at /data/opt/libreoffice/master/vcl/source/app/scheduler.cxx:38
>#28 0x00007ffff0cffb11 in Scheduler::ProcessTaskScheduling (bTimer=false) at /data/opt/libreoffice/master/vcl/source/app/scheduler.cxx:127
>#29 0x00007ffff0d21e4c in ImplYield (i_bWait=true, i_bAllEvents=false, nReleased=0) at /data/opt/libreoffice/master/vcl/source/app/svapp.cxx:347
>#30 0x00007ffff0d1e5ce in Application::Yield () at /data/opt/libreoffice/master/vcl/source/app/svapp.cxx:390
>#31 0x00007ffff0d1e573 in Application::Execute () at /data/opt/libreoffice/master/vcl/source/app/svapp.cxx:336
>#32 0x00007ffff77ef935 in desktop::Desktop::Main (this=0x7fffffffd980) at /data/opt/libreoffice/master/desktop/source/app/app.cxx:1589
>#33 0x00007ffff0d268f5 in ImplSVMain () at /data/opt/libreoffice/master/vcl/source/app/svmain.cxx:162
>#34 0x00007ffff0d26a11 in SVMain () at /data/opt/libreoffice/master/vcl/source/app/svmain.cxx:196
>#35 0x00007ffff78361d0 in soffice_main () at /data/opt/libreoffice/master/desktop/source/app/sofficemain.cxx:96
>#36 0x0000000000400954 in sal_main () at /data/opt/libreoffice/master/desktop/source/app/main.c:48
>#37 0x000000000040093a in main (argc=2, argv=0x7fffffffdc78) at /data/opt/libreoffice/master/desktop/source/app/main.c:47
>
>
>...
>
>
>Breakpoint 2, sd::presenter::CanvasUpdateRequester::RequestUpdate (this=0x207b150, bUpdateAll=false) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:79
>79          if (mnUserEventId == 0)
>(gdb) c
>Continuing.
>
>Breakpoint 3, sd::presenter::CanvasUpdateRequester::RequestUpdate (this=0x207b150, bUpdateAll=false) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:81
>81              SAL_DEBUG("request update - post new user event " << bUpdateAll);
>(gdb) c
>Continuing.
>debug:11219:1: request update - post new user event 0
>debug:11219:1: PresenterCanvas::updateScreen
>
>Breakpoint 2, sd::presenter::CanvasUpdateRequester::RequestUpdate (this=0x207b150, bUpdateAll=false) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:79
>79          if (mnUserEventId == 0)
>(gdb) c
>Continuing.
>debug:11219:1: request update - waiting for new user event 0
>debug:11219:1: CanvasUpdateRequester triggered 0
>debug:11219:1: PresenterCanvas::updateScreen
>
>Breakpoint 2, sd::presenter::CanvasUpdateRequester::RequestUpdate (this=0x207b150, bUpdateAll=false) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:79
>79          if (mnUserEventId == 0)
>(gdb) c
>Continuing.
>
>Breakpoint 3, sd::presenter::CanvasUpdateRequester::RequestUpdate (this=0x207b150, bUpdateAll=false) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:81
>81              SAL_DEBUG("request update - post new user event " << bUpdateAll);
>(gdb) c
>Continuing.
>debug:11219:1: request update - post new user event 0
>debug:11219:1: PresenterCanvas::updateScreen
>
>Breakpoint 2, sd::presenter::CanvasUpdateRequester::RequestUpdate (this=0x207b150, bUpdateAll=true) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:79
>79          if (mnUserEventId == 0)
>(gdb) c
>Continuing.
>debug:11219:1: request update - waiting for new user event 1
>debug:11219:1: PresenterCanvas::updateScreen
>
>Breakpoint 2, sd::presenter::CanvasUpdateRequester::RequestUpdate (this=0x207b150, bUpdateAll=false) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:79
>79          if (mnUserEventId == 0)
>(gdb) c
>Continuing.
>debug:11219:1: request update - waiting for new user event 0
>debug:11219:1: PresenterCanvas::updateScreen
>
>Breakpoint 2, sd::presenter::CanvasUpdateRequester::RequestUpdate (this=0x207b150, bUpdateAll=false) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:79
>79          if (mnUserEventId == 0)
>(gdb) TO HERE WE GOT NO PRETTY OUTPUT AT ALL ...^CQuit
>(gdb) c
>Continuing.
>debug:11219:1: request update - waiting for new user event 0
>debug:11219:1: PresenterCanvas::updateScreen
>
>Breakpoint 2, sd::presenter::CanvasUpdateRequester::RequestUpdate (this=0x207b150, bUpdateAll=false) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:79
>79          if (mnUserEventId == 0)
>(gdb) c
>Continuing.
>debug:11219:1: request update - waiting for new user event 0
>debug:11219:1: Toolbar::windowPaint
>debug:11219:1: Toolbar::actually paint
>debug:11219:1: PresenterCanvas::updateScreen
>
>Breakpoint 2, sd::presenter::CanvasUpdateRequester::RequestUpdate (this=0x207b150, bUpdateAll=false) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:79
>79          if (mnUserEventId == 0)
>(gdb) c
>Continuing.
>debug:11219:1: request update - waiting for new user event 0
>debug:11219:1: CanvasUpdateRequester triggered 1
>debug:11219:1: done reschedule
>debug:11219:1: PresenterCanvas::updateScreen
>
>Breakpoint 2, sd::presenter::CanvasUpdateRequester::RequestUpdate (this=0x207b150, bUpdateAll=true) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:79
>79          if (mnUserEventId == 0)
>(gdb) AND BY HERE IT WAS ALL RENDERED (I guess the above did it)
>
>
>** WOw ...
>	+ the CanvasUpdateRequester was not triggered despite
>	  all these requests for updates ...
>		+ fun [!] ...
>
>* When this guy happens: we get some output:
>	+ debug:11219:1: CanvasUpdateRequester triggered 1
>
>
>bool WinSalFrame::PostEvent( void* pData )
>{
>    return (bool)PostMessageW( mhWnd, SAL_MSG_USEREVENT, 0, (LPARAM)pData );
>}
>
>Are these not getting through on windows right ? or ...
>	-what- is going on ?
>
>... fun ... [ !urgh! ] ... fun ...
>
>
>* Linux:
>	+ we want to get the update request ASAP.
>
>* Wow - on Windows -> it is dire ...
>	+ we get no update request ...
>		+ that is odd =)
>		+ why not !?
>
>
>
>
>* This looks hideous:
>
>
>diff --git a/sd/source/ui/framework/configuration/ConfigurationUpdater.cxx b/sd/source/ui/framework/configuration/ConfigurationUpdater.cxx
>index 42b2eb7..10ea920 100644
>--- a/sd/source/ui/framework/configuration/ConfigurationUpdater.cxx
>+++ b/sd/source/ui/framework/configuration/ConfigurationUpdater.cxx
>@@ -36,7 +36,11 @@ using ::sd::framework::FrameworkHelper;
> using ::std::vector;
> 
> namespace {
>+static const sal_Int32 snShortTimeout (100);
>+static const sal_Int32 snNormalTimeout (1000);
>+static const sal_Int32 snLongTimeout (10000);
> static const sal_Int32 snShortTimeoutCountThreshold (1);
>+static const sal_Int32 snNormalTimeoutCountThreshold (5);
>
>	* what is going on there ? ...
>
>* Why don't we get an invalidate in here ? ...
>	+ what is going on [!] ? ...
>
>* Perhaps it used to come from some paint method or ? ...
>	+ do we not 'Show' something and get an invalidate ?
>		+ or ... ?
>
>
>
>/** Synchronize painting of windows and canvases.  At the moment there is
>    just some processing of invalidate calls.
>    This could be extended to process incoming windowPaint() calls.
>*/
>class PresenterPaintManager
>{
>	huh -> nasty ...
>
>* we are not getting an invalidate on our window ... otherwise
>	We would get a RequestUpdate ...
>		+ hmm.
>
>
>** Where are the invaldiates coming from ?
>	+ I would expect them when we add a VCLXWindow to another (?)
>		+ are these missing ? ...
>		+ or do they happen too early ? ... (somehow) ...
>
>
>
>--------- Invalidates after the FullScreenFoo creation ----------
>
>
>sdext/source/presenter/PresenterWindowManager.cxx:183
>	+ NotifyViewCreation ...
>		+ from PresenterController ...
>		+ from framework -> "Activate Resource"
>			+ queues an invalidate ...
>
>All this from sd/source/framework/configuration/ChangeRequestQueueProcessor.cxx:164
>	+ etc.
>
>* Click:
>	+ Time change / tick-tock invalidate:
>
>(gdb) bt 10
>#0  vcl::Window::ImplInvalidate (this=0x2038200, pRegion=0x7fffffffc420, nFlags=(Children | Transparent)) at /data/opt/libreoffice/master/vcl/source/window/paint.cxx:731
>#1  0x00007ffff0739733 in vcl::Window::Invalidate (this=0x2038200, rRect=Rectangle = {...}, nFlags=(Children | Transparent)) at /data/opt/libreoffice/master/vcl/source/window/paint.cxx:1182
>#2  0x00007ffff22edbf2 in VCLXWindow::invalidateRect (this=0x7fffc0176e68, rRect=..., nInvalidateFlags=17) at /data/opt/libreoffice/master/toolkit/source/awt/vclxwindow.cxx:1167
>#3  0x00007fffad0c3a05 in sdext::presenter::PresenterPaintManager::Invalidate (this=0x1feb160, rxWindow=uno::Reference to (VCLXContainer *) 0x7fffae600a38, rRepaintBox=..., nInvalidateFlags=17) at /data/opt/libreoffice/master/sdext/source/presenter/PresenterPaintManager.cxx:138
>#4  0x00007fffad0c38c4 in sdext::presenter::PresenterPaintManager::Invalidate (this=0x1feb160, rxWindow=uno::Reference to (VCLXContainer *) 0x7fffae600a38, rRepaintBox=..., bSynchronous=false) at /data/opt/libreoffice/master/sdext/source/presenter/PresenterPaintManager.cxx:116
>#5  0x00007fffad13ced7 in sdext::presenter::PresenterToolBar::InvalidateArea (this=0x7fffc01734c0, rRepaintBox=..., bSynchronous=false) at /data/opt/libreoffice/master/sdext/source/presenter/PresenterToolBar.cxx:466
>#6  0x00007fffad142a41 in sdext::presenter::(anonymous namespace)::Element::Invalidate (this=0x7fffc01725b8, bSynchronous=false) at /data/opt/libreoffice/master/sdext/source/presenter/PresenterToolBar.cxx:1331
>#7  0x00007fffad144c58 in sdext::presenter::(anonymous namespace)::Label::SetText (this=0x7fffc01725b8, rsText="21:22:52") at /data/opt/libreoffice/master/sdext/source/presenter/PresenterToolBar.cxx:1674
>#8  0x00007fffad145d08 in sdext::presenter::(anonymous namespace)::CurrentTimeLabel::TimeHasChanged (this=0x7fffc01725b8, rCurrentTime=...) at /data/opt/libreoffice/master/sdext/source/presenter/PresenterToolBar.cxx:1887
>#9  0x00007fffad13c117 in sdext::presenter::(anonymous namespace)::TimeLabel::Listener::TimeHasChanged (this=0x1ffc5a0, rCurrentTime=...) at /data/opt/libreoffice/master/sdext/source/presenter/PresenterToolBar.cxx:288
>
>
>Difference between VCL plugin and Direct X ...
>
>
>@@ -29,6 +21,12 @@
> debug:5664:7716: PresenterCanvas::updateScreen
> debug:5664:7716: Canvas Update Requested queue new0
> debug:5664:7716: PresenterCanvas::updateScreen
>+debug:5664:7716: Canvas Update Requested 0
>+debug:5664:7716: CanvasUpdateRequester triggered 0
>+debug:5664:7716: ** Updated ? ** 1
>
>	*** This is what we're missing ? ***
>
>+debug:5664:7716: PresenterCanvas::updateScreen
>+debug:5664:7716: Canvas Update Requested queue new0
>+debug:5664:7716: PresenterCanvas::updateScreen
> debug:5664:7716: Canvas Update Requested 1
> debug:5664:7716: PresenterCanvas::updateScreen
> debug:5664:7716: Canvas Update Requested 1
>@@ -63,32 +61,16 @@
> debug:5664:7716: PresenterCanvas::updateScreen
> debug:5664:7716: Canvas Update Requested queue new0
> debug:5664:7716: PresenterCanvas::updateScreen
>-debug:5664:7716: Canvas Update Requested queue new0
>-debug:5664:7716: CanvasUpdateRequester triggered 0
>		  ********** this is what we're missing *************
>-debug:5664:7716: ** Updated ? ** 1
>-debug:5664:7716: CanvasUpdateRequester triggered 0
>-debug:5664:7716: PresenterCanvas::updateScreen
>-debug:5664:7716: Canvas Update Requested queue new0
>-debug:5664:7716: ** Updated ? ** 1
>+debug:5664:7716: Canvas Update Requested 0
> debug:5664:7716: CanvasUpdateRequester triggered 0
> debug:5664:7716: ** Updated ? ** 1
> debug:5664:7716: PresenterCanvas::updateScreen
>
>* Where does CanvasUpdateRequester get called from !? ...
>	+ fun.
>	+ the canvas ? or a window or ... ?
>
>
>
>
>#0  sd::presenter::CanvasUpdateRequester::RequestUpdate (this=<error reading variable: can't compute CFA for this frame>, bUpdateAll=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/presenter/CanvasUpdateRequester.cxx:81
>
>#1  0x00007fffc25d0bcb in sd::presenter::PresenterCanvas::updateScreen (this=<error reading variable: can't compute CFA for this frame>, bUpdateAll=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/presenter/PresenterCanvas.cxx:562
>#2  0x00007fffe86a875d in cppcanvas::internal::ImplSpriteCanvas::updateScreen (this=0x166a6d0, bUpdateAll=false) at /data/opt/libreoffice/master/cppcanvas/source/wrapper/implspritecanvas.cxx:86
>#3  0x00007fffa7bedae4 in slideshow::internal::(anonymous namespace)::SlideView::updateScreen (this=0x7fffc0216e58) at /data/opt/libreoffice/master/slideshow/source/engine/slideview.cxx:859
>
>
>*** SO - to chase on Windows ...
>
>	+ add breakpoint to CanvasUpdateRequester's Callback
>		+ work out why it is called with VCL canvas
>		+ but not with DirectX canvas
>			+ fun ! ...
>
>
>
>* The callback comes from:
>	+ ImplSalYield ...
>		+ ImplSalDispatchMessage ...
>		+ WinSalInstance: ...
>
>	+ Application::Reschedule
>		+ etc.
>
>	sd::SlideshowImpl::PostYieldListener
>		+ Wow -> crazy; a callback after 'Yield'
>		+ that does another yield [ what ! ] ...
>
>
>sal_Int32 SlideshowImpl::updateSlideShow()
>{
>    // prevent me from deletion when recursing (App::EnableYieldMode does)
>    const rtl::Reference<SlideshowImpl> this_(this);
>
>	+ horrors ... [!] ...
>
>            if (::basegfx::fTools::equalZero(fUpdate))
>            {
>                // Use post yield listener for short update intervalls.
>                Application::EnableNoYieldMode();
>                Application::AddPostYieldListener(LINK(this, SlideshowImpl, PostYieldListener));
>            }
>
>	+ vs.
>
>            {
>                // Avoid busy loop when the previous call to update()
>                // returns a small positive number but not 0 (which is
>                // handled above).  Also, make sure that calls to update()
>                // have a minimum frequency.
>                // => Allow up to 60 frames per second.  Call at least once
>                // every 4 seconds.
>                const static sal_Int32 mnMaximumFrameCount (60);
>                const static double mnMinimumTimeout (1.0 / mnMaximumFrameCount);
>                const static double mnMaximumTimeout (4.0);
>                fUpdate = ::basegfx::clamp(fUpdate, mnMinimumTimeout, mnMaximumTimeout);
>
>	* wow ...
>		+ This is truly busted [!] ...
>			+ wow.
>
>
>	* On Windows -> we have a post yield mode ? ...
>		+ but do we have no events ?
>
>
>* Windows:
>	+ Timer -> to 
>
>SlideshowImpl::SlideshowImpl( const Reference< XPresentation2 >& xPresentation, ViewShell* pViewSh, ::sd::View* pView, SdDrawDocument* pDoc, vcl::Window* pParentWindow )
>{
>    maUpdateTimer.SetTimeoutHdl(LINK(this, SlideshowImpl, updateHdl));
>	+ this should update the screen [etc.]
>    ...
>}
>
>	This timer is triggered ...
>
>	* calls updateSlideShow
>
>	* calls AddPostYieldListener
>
>	* PostYieldListener is ~immediately triggered
>
>		=> so far apparently no presenter-console / screen setup etc.
>		=> no invalidates processed yet (?) ...
>
>	* Then immediately go around the next loop
>		+ fUpdate is this time -1
>		=> so no re-rendering is queued
>
>
>* So - we hit the PostYieldListener
>
>** Fun
>	+ what is different about the canvas ? ...
>
>
>/** called only by the slideshow view when the first paint event occurs.
>    This actually starts the slideshow. */
>void SlideshowImpl::onFirstPaint()
>{
>    SolarMutexGuard aSolarGuard;
>    maUpdateTimer.SetTimeout( (sal_uLong)100 );
>    maUpdateTimer.Start();
>    ...
>}
>
>	Hmm ...
>
>* Debugging there - stops things starting ...
>	+ most odd ...
>
>svapp.cxx:
>    // the system timer events will not necessarily come in non waiting mode
>    // e.g. on OS X; need to trigger timer checks manually
>    if( pSVData->maAppData.mbNoYield )
>    {
>        //Process all timers
>        Scheduler::ProcessTaskScheduling(true);
>    }
>
>
>** This is all really messed up ...
>	+ fun.
>
>
>** In the failing case:
>
>	updateSlideShow 0
>	updateSlideShow -1	- fun - quicker ? ... delays longer ?
>	CreateWindows
>	CreateWindows
>	CreateWindows
>	CreateWindows
>	updateSlideShow -1
>	updateSlideShow -1
>	etc. ...
>
>** In the succeeding case:
>	updateSlideShow 0
>	CreateWindows
>	CreateWindows
>	PresenterCanvas::updateScreen
>	Canvas Updated Requeeted queue new0
>	PresenterCanvas::updateScreen
>	updateSlideShow -1
>	CanvasUpdateRequester triggered 0
>	** Update ? ** 1 -> this renders it ...
>
>
>** Fun:
>	+ Timing related ...
>		+ with breakpoints in there:
>		  behavior changes ...
>
>
>** When updateSlideshow returns -1 ...
>	+ then everything is 'done' ...
>
>** Looks like we don't get a PresenterCanvas::updateScreen
>	+ why not !? ...
>
>
>** So where does the above updateScreen come from ? ...
>
>#1  0x00007fffc25d0bcb in sd::presenter::PresenterCanvas::updateScreen (this=<error reading variable: can't compute CFA for this frame>, bUpdateAll=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/presenter/PresenterCanvas.cxx:562
>#2  0x00007fffe86a875d in cppcanvas::internal::ImplSpriteCanvas::updateScreen (this=0x166a6d0, bUpdateAll=false) at /data/opt/libreoffice/master/cppcanvas/source/wrapper/implspritecanvas.cxx:86
>#3  0x00007fffa7bedae4 in slideshow::internal::(anonymous namespace)::SlideView::updateScreen (this=0x7fffc0216e58) at /data/opt/libreoffice/master/slideshow/source/engine/slideview.cxx:859
>... foreach ...
>#7  0x00007fffa7b10d8a in slideshow::internal::ScreenUpdater::requestImmediateUpdate (this=0x7fffdf53d9e8) at /data/opt/libreoffice/master/slideshow/source/engine/screenupdater.cxx:200
>#8  0x00007fffa7c465a1 in slideshow::internal::WaitSymbol::setVisible (this=0x203e040, bVisible=true) at /data/opt/libreoffice/master/slideshow/source/engine/waitsymbol.cxx:100
>#9  0x00007fffa7bc43b5 in slideshow::internal::WaitSymbol::show (this=0x203e040) at /data/opt/libreoffice/master/slideshow/source/engine/waitsymbol.hxx:55
>#10 0x00007fffa7bb97ae in (anonymous namespace)::SlideShowImpl::requestWaitSymbol (this=0x7fffdf53d808) at /data/opt/libreoffice/master/slideshow/source/engine/slideshowimpl.cxx:959
>#11 0x00007fffa7bb6c56 in (anonymous namespace)::SlideShowImpl::WaitSymbolLock::WaitSymbolLock (this=0x7fffffffc560, rSlideShowImpl=...) at /data/opt/libreoffice/master/slideshow/source/engine/slideshowimpl.cxx:411
>#12 0x00007fffa7bbf9b8 in (anonymous namespace)::SlideShowImpl::notifySlideAnimationsEnded (this=0x7fffdf53d808) at /data/opt/libreoffice/master/slideshow/source/engine/slideshowimpl.cxx:2313
>...
>#18 0x00007fffa7a9abbe in slideshow::internal::Delay::fire (this=0x20e7290) at /data/opt/libreoffice/master/slideshow/source/engine/delayevent.cxx:32
>#19 0x00007fffa7afc23c in slideshow::internal::EventQueue::process_ (this=0x7fffdf53d9f0, bFireAllEvents=false) at /data/opt/libreoffice/master/slideshow/source/engine/eventqueue.cxx:225
>#20 0x00007fffa7afbd99 in slideshow::internal::EventQueue::process (this=0x7fffdf53d9f0) at /data/opt/libreoffice/master/slideshow/source/engine/eventqueue.cxx:167
>#21 0x00007fffa7bbee0c in (anonymous namespace)::SlideShowImpl::update (this=0x7fffdf53d808, nNextTimeout=@0x7fffffffcd48: 0) at /data/opt/libreoffice/master/slideshow/source/engine/slideshowimpl.cxx:2040
>#22 0x00007fffc2633969 in sd::SlideshowImpl::updateSlideShow (this=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/slideshow/slideshowimpl.cxx:1829
>#23 0x00007fffc263374a in sd::SlideshowImpl::updateHdl (this=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/slideshow/slideshowimpl.cxx:1789
>#24 0x00007fffc263372b in sd::SlideshowImpl::LinkStubupdateHdl (instance=<error reading variable: can't compute CFA for this frame>, data=<error reading variable: can't compute CFA for this frame>) at /data/opt/libreoffice/master/sd/source/ui/slideshow/slideshowimpl.cxx:1787
>#25 0x00007ffff0d29ad3 in Link<Timer*, void>::Call (this=0x7fffae633618, data=0x7fffae6335f8) at /data/opt/libreoffice/master/include/tools/link.hxx:127
>#26 0x00007ffff0d29843 in Timer::Invoke (this=0x7fffae6335f8) at /data/opt/libreoffice/master/vcl/source/app/timer.cxx:117
>#27 0x00007ffff0cff84c in ImplSchedulerData::Invoke (this=0x20f2a30) at /data/opt/libreoffice/
>#28 0x00007ffff0cffb11 in Scheduler::ProcessTaskScheduling (bTimer=false) at /data/opt/libreoffice/master/vcl/source/app/scheduler.cxx:127
>
>
>void SlideShowImpl::notifySlideAnimationsEnded()
>	+ looks interesting ...
>
>
>** Another question:
>	+ why is the clock / tick invalidation not working !?
>		(at least initially)
>
>
>
>** Fails:
>	updateSlideShow 0
>	< what happens here ? ... no CreateWindows in time ? ... >
>	notifySlideAnimationsEnded
>	notifySlideAnimationsEnded - broadcast to screens ...
>	updateSlideShow -1
>	CreateWindows
>	...
>
>* Succeeds:
>	updateSlideShow 0
>	CreateWindows
>	CreateWindows
>	CreateWindows
>	CreateWindows
>	notifySlideAnimationsEnded -> ...
>	PresenterCanvas::updateScreen
>	Canvas Updated Requeeted queue new0
>	PresenterCanvas::updateScreen
>	updateSlideShow -1
>	CanvasUpdateRequester triggered 0
>	** Update ? ** 1 -> this renders it ...
>
>... [ wow ] ...
>	+ it really is -this- bad =)
>
>* Race condition between slideshow/ and sd/ and/or sdext/
>	+ fun.
>
>
>* In a nutshell (I guess) we just don't have this thing setup yet
>  for the presenter console; there is some sort of race there:
>
>    maListenerContainer.forEach<presentation::XSlideShowListener>(
>        boost::mem_fn( &presentation::XSlideShowListener::slideAnimationsEnded ) );
>
>* The update seems to come from here:
>
>        WaitSymbolLock aLock (*this);
>		+ hmm ...
>
>* Is there really some deferred magic / foo here ?
>
>* WaitSymbol:
>
>    void show() { setVisible(true); }
>
>	* the 'wait symbols' - forces an immediate update of the screens ...
>		+ which is what first shows the presenter console ?
>		** Can that really be true ?
>			+ what if there is no next slide ?
>			+ is my 1x slide example particularly odd ?
>
>
>* this is all a horrible hole ! =)
>	+ how -can- it be -this- bad =)
>		+ what are they thinking about ? ...
>	+ try with an animation or two ...
>
>
>
>** With the VCL foo working nicely and giving
>   invalidates and paint requests etc.
>	+ we do get a:
>		+ CanvasUpdateRequester::RequestUpdate
>			+ we get from a windowPaint event from
>			  an invalidate on the presenter console.
>			+ so that works [!] ..
>				+ but ? ...
>
>	+ with the other canvas ...
>		+ we don't get this at all
>		+ no RequestUpdate
>
>	+ I (guess) no invalidate from VCL etc. to drive that
>		+ why not ?.
>
>** Just a total mess ...
>	+ events coming in left & right; and a complete mess of
>	  ordering them.
>

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Attachments on bug 91574: 116259 | 116769 | 117054 | 117064 | 117372 | 117470