re-add fixed patch

0001-improve-perf.-of-VCL-event-dispatch-take-II.patch

@@ -0,0 +1,77 @@
+From 2fb31f248fe86c52c1070cbc8b18b24872a4bedc Mon Sep 17 00:00:00 2001
+From: David Tardon <dtardon@redhat.com>
+Date: Fri, 6 May 2016 09:33:37 +0200
+Subject: [PATCH] improve perf. of VCL event dispatch, take II
+
+Change-Id: I5052f0c3e2c8739b336da52ef9590e5008255247
+---
+ vcl/inc/window.h             |  2 ++
+ vcl/source/window/event.cxx  | 15 ++++++++++++++-
+ vcl/source/window/window.cxx |  1 +
+ 3 files changed, 17 insertions(+), 1 deletion(-)
+
+diff --git a/vcl/inc/window.h b/vcl/inc/window.h
+index e06a6b1..302e9d0 100644
+--- a/vcl/inc/window.h
++++ b/vcl/inc/window.h
+@@ -201,6 +201,8 @@ public:
+     VclPtr<vcl::Window> mpLastFocusWindow;
+     VclPtr<vcl::Window> mpDlgCtrlDownWindow;
+     std::vector<Link<VclWindowEvent&,void>> maEventListeners;
++    int mnEventListenersIteratingCount;
++    std::set<Link<VclWindowEvent&,void>> maEventListenersDeleted;
+     std::vector<Link<VclWindowEvent&,void>> maChildEventListeners;
+     int mnChildEventListenersIteratingCount;
+     std::set<Link<VclWindowEvent&,void>> maChildEventListenersDeleted;
+diff --git a/vcl/source/window/event.cxx b/vcl/source/window/event.cxx
+index 10a85ed..c7d1777 100644
+--- a/vcl/source/window/event.cxx
++++ b/vcl/source/window/event.cxx
+@@ -216,11 +216,22 @@ void Window::CallEventListeners( sal_uLong nEvent, void* pData )
+     {
+         // Copy the list, because this can be destroyed when calling a Link...
+         std::vector<Link<VclWindowEvent&,void>> aCopy( mpWindowImpl->maEventListeners );
++        // we use an iterating counter/flag and a set of deleted Link's to avoid O(n^2) behaviour
++        mpWindowImpl->mnEventListenersIteratingCount++;
++        auto& rWindowImpl = *mpWindowImpl;
++        comphelper::ScopeGuard aGuard(
++            [&rWindowImpl]()
++            {
++                rWindowImpl.mnEventListenersIteratingCount--;
++                if (rWindowImpl.mnEventListenersIteratingCount == 0)
++                    rWindowImpl.maEventListenersDeleted.clear();
++            }
++        );
+         for ( Link<VclWindowEvent&,void>& rLink : aCopy )
+         {
+             if (xWindow->IsDisposed()) break;
+             // check this hasn't been removed in some re-enterancy scenario fdo#47368
+-            if( std::find(mpWindowImpl->maEventListeners.begin(), mpWindowImpl->maEventListeners.end(), rLink) != mpWindowImpl->maEventListeners.end() )
++            if( rWindowImpl.maEventListenersDeleted.find(rLink) == rWindowImpl.maEventListenersDeleted.end() )
+                 rLink.Call( aEvent );
+         }
+     }
+@@ -279,6 +290,8 @@ void Window::RemoveEventListener( const Link<VclWindowEvent&,void>& rEventListen
+     {
+         auto& rListeners = mpWindowImpl->maEventListeners;
+         rListeners.erase( std::remove(rListeners.begin(), rListeners.end(), rEventListener ), rListeners.end() );
++        if (mpWindowImpl->mnEventListenersIteratingCount)
++            mpWindowImpl->maEventListenersDeleted.insert(rEventListener);
+     }
+ }
+ 
+diff --git a/vcl/source/window/window.cxx b/vcl/source/window/window.cxx
+index f245c47..d1c1ffe 100644
+--- a/vcl/source/window/window.cxx
++++ b/vcl/source/window/window.cxx
+@@ -615,6 +615,7 @@ WindowImpl::WindowImpl( WindowType nType )
+     mpNextOverlap                       = nullptr;                      // next overlap window of frame
+     mpLastFocusWindow                   = nullptr;                      // window for focus restore
+     mpDlgCtrlDownWindow                 = nullptr;                      // window for dialog control
++    mnEventListenersIteratingCount = 0;
+     mnChildEventListenersIteratingCount = 0;
+     mpUserData                          = nullptr;                      // user data
+     mpCursor                            = nullptr;                      // cursor
+-- 
+2.7.4
+

libreoffice.spec

@@ -237,6 +237,7 @@ Patch7: 0001-pass-original-CFLAGS.patch
 Patch8: 0001-rbhz-1326602-avoid-exp.-bg-bitmaps-from-deleted-slid.patch
 Patch9: 0001-tdf-99353-take-the-footgun-away-from-FilterCache.patch
 Patch10: 0001-only-set-cur.-page-once-when-removing-mult.-pages.patch
+Patch11: 0001-improve-perf.-of-VCL-event-dispatch-take-II.patch
 
 %if 0%{?rhel}
 # not upstreamed