tdf#90376 revert the dock windows' Idles to Timers

The dock windows' Timers were converted to Idles in commit
eef25e0e7c03 ("changed timers to idles"). Since the Idles poll
the mouse buttons, they starve all lower priority events.

From the comment in ImplDockFloatWin2::Move, this is a hack to
get the mouse release event from the window decorations in X11.

Change-Id: Ibba3c58dd8b3d95dbd9296cc111ab32968bee230
Reviewed-on: https://gerrit.libreoffice.org/59590
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>
(cherry picked from commit afd49c198769b5e7fc01a68ce7a6847aa0d0ddd8)
Reviewed-on: https://gerrit.libreoffice.org/60720
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

1 files changed, 17 insertions, 19 deletions

diff --git a/vcl/source/window/dockmgr.cxx b/vcl/source/window/dockmgr.cxx
index eb27e3e18c05..9846bc45549b 100644
--- a/vcl/source/window/dockmgr.cxx
+++ b/vcl/source/window/dockmgr.cxx
@@ -42,8 +42,8 @@ class ImplDockFloatWin2 : public FloatingWindow
 private:
     ImplDockingWindowWrapper*  mpDockWin;
     sal_uInt64      mnLastTicks;
-    Idle            maDockIdle;
-    Idle            maEndDockIdle;
+    Timer           m_aDockTimer;
+    Timer           m_aEndDockTimer;
     Point           maDockPos;
     tools::Rectangle       maDockRect;
     bool            mbInMove;
@@ -86,13 +86,15 @@ ImplDockFloatWin2::ImplDockFloatWin2( vcl::Window* pParent, WinBits nWinBits,
 
     SetBackground( GetSettings().GetStyleSettings().GetFaceColor() );
 
-    maDockIdle.SetInvokeHandler( LINK( this, ImplDockFloatWin2, DockTimerHdl ) );
-    maDockIdle.SetPriority( TaskPriority::HIGH_IDLE );
-    maDockIdle.SetDebugName( "vcl::ImplDockFloatWin2 maDockIdle" );
+    m_aDockTimer.SetInvokeHandler( LINK( this, ImplDockFloatWin2, DockTimerHdl ) );
+    m_aDockTimer.SetPriority( TaskPriority::HIGH_IDLE );
+    m_aDockTimer.SetTimeout( 50 );
+    m_aDockTimer.SetDebugName( "vcl::ImplDockFloatWin2 m_aDockTimer" );
 
-    maEndDockIdle.SetInvokeHandler( LINK( this, ImplDockFloatWin2, EndDockTimerHdl ) );
-    maEndDockIdle.SetPriority( TaskPriority::HIGH_IDLE );
-    maEndDockIdle.SetDebugName( "vcl::ImplDockFloatWin2 maEndDockIdle" );
+    m_aEndDockTimer.SetInvokeHandler( LINK( this, ImplDockFloatWin2, EndDockTimerHdl ) );
+    m_aEndDockTimer.SetPriority( TaskPriority::HIGH_IDLE );
+    m_aEndDockTimer.SetTimeout( 50 );
+    m_aEndDockTimer.SetDebugName( "vcl::ImplDockFloatWin2 m_aEndDockTimer" );
 }
 
 ImplDockFloatWin2::~ImplDockFloatWin2()
@@ -111,7 +113,6 @@ IMPL_LINK_NOARG(ImplDockFloatWin2, DockTimerHdl, Timer *, void)
 {
     SAL_WARN_IF( !mpDockWin->IsFloatingMode(), "vcl", "docktimer called but not floating" );
 
-    maDockIdle.Stop();
     PointerState aState = GetPointerState();
 
     if( aState.mnState & KEY_MOD1 )
@@ -119,7 +120,7 @@ IMPL_LINK_NOARG(ImplDockFloatWin2, DockTimerHdl, Timer *, void)
         // i43499 CTRL disables docking now
         mpDockWin->GetWindow()->GetParent()->ImplGetFrameWindow()->HideTracking();
         if( aState.mnState & ( MOUSE_LEFT | MOUSE_MIDDLE | MOUSE_RIGHT ) )
-            maDockIdle.Start();
+            m_aDockTimer.Start();
     }
     else if( ! ( aState.mnState & ( MOUSE_LEFT | MOUSE_MIDDLE | MOUSE_RIGHT ) ) )
     {
@@ -129,7 +130,7 @@ IMPL_LINK_NOARG(ImplDockFloatWin2, DockTimerHdl, Timer *, void)
     else
     {
         mpDockWin->GetWindow()->GetParent()->ImplGetFrameWindow()->ShowTracking( maDockRect, ShowTrackFlags::Big | ShowTrackFlags::TrackWindow );
-        maDockIdle.Start();
+        m_aDockTimer.Start();
     }
 }
 
@@ -137,7 +138,6 @@ IMPL_LINK_NOARG(ImplDockFloatWin2, EndDockTimerHdl, Timer *, void)
 {
     SAL_WARN_IF( !mpDockWin->IsFloatingMode(), "vcl", "enddocktimer called but not floating" );
 
-    maEndDockIdle.Stop();
     PointerState aState = GetPointerState();
     if( ! ( aState.mnState & ( MOUSE_LEFT | MOUSE_MIDDLE | MOUSE_RIGHT ) ) )
     {
@@ -145,9 +145,7 @@ IMPL_LINK_NOARG(ImplDockFloatWin2, EndDockTimerHdl, Timer *, void)
         mpDockWin->EndDocking( maDockRect, true );
     }
     else
-    {
-        maEndDockIdle.Start();
-    }
+        m_aEndDockTimer.Start();
 }
 
 IMPL_LINK_NOARG(ImplDockFloatWin2, DockingHdl, void*, void)
@@ -204,14 +202,14 @@ IMPL_LINK_NOARG(ImplDockFloatWin2, DockingHdl, void*, void)
             maDockRect.SetPos( mpDockWin->GetWindow()->GetParent()->ImplGetFrameWindow()->ScreenToOutputPixel(
                  maDockRect.TopLeft() ) );
             mpDockWin->GetWindow()->GetParent()->ImplGetFrameWindow()->ShowTracking( maDockRect, ShowTrackFlags::Big | ShowTrackFlags::TrackWindow );
-            maEndDockIdle.Stop();
-            DockTimerHdl( nullptr );
+            m_aEndDockTimer.Stop();
+            m_aDockTimer.Invoke();
         }
         else
         {
             mpDockWin->GetWindow()->GetParent()->ImplGetFrameWindow()->HideTracking();
-            maDockIdle.Stop();
-            EndDockTimerHdl( nullptr );
+            m_aDockTimer.Stop();
+            m_aEndDockTimer.Invoke();
         }
     }
     mbInMove = false;