Adding upstream version 4:24.2.0.upstream/4%24.2.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 652 insertions, 0 deletions

diff --git a/svtools/source/brwbox/datwin.cxx b/svtools/source/brwbox/datwin.cxx
new file mode 100644
index 0000000000..c818bb9d82
--- /dev/null
+++ b/svtools/source/brwbox/datwin.cxx
@@ -0,0 +1,652 @@
+/* -*- 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 "datwin.hxx"
+#include <o3tl/numeric.hxx>
+#include <svtools/brwhead.hxx>
+#include <svtools/scrolladaptor.hxx>
+#include <utility>
+#include <vcl/commandevent.hxx>
+#include <vcl/help.hxx>
+#include <vcl/settings.hxx>
+#include <vcl/ptrstyle.hxx>
+#include <tools/debug.hxx>
+#include <tools/fract.hxx>
+
+void ButtonFrame::Draw( OutputDevice& rDev )
+{
+    Color aOldFillColor = rDev.GetFillColor();
+    Color aOldLineColor = rDev.GetLineColor();
+
+    const StyleSettings &rSettings = rDev.GetSettings().GetStyleSettings();
+    Color aColLight( rSettings.GetLightColor() );
+    Color aColShadow( rSettings.GetShadowColor() );
+    Color aColFace( rSettings.GetFaceColor() );
+
+    rDev.SetLineColor( aColFace );
+    rDev.SetFillColor( aColFace );
+    rDev.DrawRect( aRect );
+
+    if( rDev.GetOutDevType() != OUTDEV_WINDOW )
+    {
+        rDev.SetLineColor( aColLight );
+        rDev.DrawLine( aRect.TopLeft(), Point( aRect.Right(), aRect.Top() ) );
+        rDev.DrawLine( aRect.TopLeft(), Point( aRect.Left(), aRect.Bottom() - 1 ) );
+        rDev.SetLineColor( aColShadow );
+        rDev.DrawLine( aRect.BottomRight(), Point( aRect.Right(), aRect.Top() ) );
+        rDev.DrawLine( aRect.BottomRight(), Point( aRect.Left(), aRect.Bottom() ) );
+    }
+
+    if ( !aText.isEmpty() )
+    {
+        OUString aVal = rDev.GetEllipsisString(aText,aInnerRect.GetWidth() - 2*MIN_COLUMNWIDTH);
+
+        vcl::Font aFont( rDev.GetFont() );
+        bool bOldTransp = aFont.IsTransparent();
+        if ( !bOldTransp )
+        {
+            aFont.SetTransparent( true );
+            rDev.SetFont( aFont );
+        }
+
+        Color aOldColor = rDev.GetTextColor();
+        if (m_bDrawDisabled)
+            rDev.SetTextColor(rSettings.GetDisableColor());
+
+        rDev.DrawText( Point(
+            ( aInnerRect.Left() + aInnerRect.Right() ) / 2 - ( rDev.GetTextWidth(aVal) / 2 ),
+            aInnerRect.Top() ), aVal );
+
+        // restore settings
+        if ( !bOldTransp )
+        {
+            aFont.SetTransparent(false);
+            rDev.SetFont( aFont );
+        }
+        if (m_bDrawDisabled)
+            rDev.SetTextColor(aOldColor);
+    }
+
+    rDev.SetLineColor( aOldLineColor );
+    rDev.SetFillColor( aOldFillColor );
+}
+
+BrowserColumn::BrowserColumn( sal_uInt16 nItemId,
+                              OUString aTitle, tools::Long nWidthPixel, const Fraction& rCurrentZoom )
+:   _nId( nItemId ),
+    _nWidth( nWidthPixel ),
+    _aTitle(std::move( aTitle )),
+    _bFrozen( false )
+{
+    double n = static_cast<double>(_nWidth);
+    n *= static_cast<double>(rCurrentZoom.GetDenominator());
+    if (!rCurrentZoom.GetNumerator())
+        throw o3tl::divide_by_zero();
+    n /= static_cast<double>(rCurrentZoom.GetNumerator());
+    _nOriginalWidth = n>0 ? static_cast<tools::Long>(n+0.5) : -static_cast<tools::Long>(-n+0.5);
+}
+
+BrowserColumn::~BrowserColumn()
+{
+}
+
+void BrowserColumn::SetWidth(tools::Long nNewWidthPixel, const Fraction& rCurrentZoom)
+{
+    _nWidth = nNewWidthPixel;
+    // Avoid overflow when called with LONG_MAX from
+    // BrowseBox::AutoSizeLastColumn:
+    if (_nWidth == LONG_MAX)
+    {
+        _nOriginalWidth = _nWidth;
+    }
+    else
+    {
+        double n = static_cast<double>(_nWidth);
+        n *= static_cast<double>(rCurrentZoom.GetDenominator());
+        if (!rCurrentZoom.GetNumerator())
+            throw o3tl::divide_by_zero();
+        n /= static_cast<double>(rCurrentZoom.GetNumerator());
+        _nOriginalWidth = n>0 ? static_cast<tools::Long>(n+0.5) : -static_cast<tools::Long>(-n+0.5);
+    }
+}
+
+void BrowserColumn::Draw( BrowseBox const & rBox, OutputDevice& rDev, const Point& rPos  )
+{
+    if ( _nId == 0 )
+    {
+        // paint handle column
+        ButtonFrame( rPos, Size( Width()-1, rBox.GetDataRowHeight()-1 ),
+                     "", false ).Draw( rDev );
+        Color aOldLineColor = rDev.GetLineColor();
+        rDev.SetLineColor( COL_BLACK );
+        rDev.DrawLine(
+            Point( rPos.X(), rPos.Y()+rBox.GetDataRowHeight()-1 ),
+            Point( rPos.X() + Width() - 1, rPos.Y()+rBox.GetDataRowHeight()-1 ) );
+        rDev.DrawLine(
+            Point( rPos.X() + Width() - 1, rPos.Y() ),
+            Point( rPos.X() + Width() - 1, rPos.Y()+rBox.GetDataRowHeight()-1 ) );
+        rDev.SetLineColor( aOldLineColor );
+
+        rBox.DoPaintField( rDev,
+            tools::Rectangle(
+                Point( rPos.X() + 2, rPos.Y() + 2 ),
+                Size( Width()-1, rBox.GetDataRowHeight()-1 ) ),
+            GetId(),
+            BrowseBox::BrowserColumnAccess() );
+    }
+    else
+    {
+        // paint data column
+        tools::Long nWidth = Width() == LONG_MAX ? rBox.GetDataWindow().GetSizePixel().Width() : Width();
+
+        rBox.DoPaintField( rDev,
+            tools::Rectangle(
+                Point( rPos.X() + MIN_COLUMNWIDTH, rPos.Y() ),
+                Size( nWidth-2*MIN_COLUMNWIDTH, rBox.GetDataRowHeight()-1 ) ),
+            GetId(),
+            BrowseBox::BrowserColumnAccess() );
+    }
+}
+
+
+void BrowserColumn::ZoomChanged(const Fraction& rNewZoom)
+{
+    double n(_nOriginalWidth * rNewZoom);
+    _nWidth = n>0 ? static_cast<tools::Long>(n+0.5) : -static_cast<tools::Long>(-n+0.5);
+}
+
+
+BrowserDataWin::BrowserDataWin( BrowseBox* pParent )
+    :Control( pParent, WB_CLIPCHILDREN )
+    ,DragSourceHelper( this )
+    ,DropTargetHelper( this )
+    ,pHeaderBar( nullptr )
+    ,bInDtor( false )
+    ,aMouseTimer("BrowserDataWin aMouseTimer")
+    ,bInPaint( false )
+    ,bInCommand( false )
+    ,bNoHScroll( false )
+    ,bNoVScroll( false )
+    ,bAutoHScroll(false)
+    ,bAutoVScroll(false)
+    ,bUpdateMode( true )
+    ,bAutoSizeLastCol(false)
+    ,bResizeOnPaint( false )
+    ,bUpdateOnUnlock( false )
+    ,bInUpdateScrollbars( false )
+    ,bHadRecursion( false )
+    ,bCallingDropCallback( false )
+    ,nUpdateLock( 0 )
+    ,nCursorHidden( 0 )
+    ,m_nDragRowDividerLimit( 0 )
+    ,m_nDragRowDividerOffset( 0 )
+{
+    aMouseTimer.SetInvokeHandler( LINK( this, BrowserDataWin, RepeatedMouseMove ) );
+    aMouseTimer.SetTimeout( 100 );
+}
+
+BrowserDataWin::~BrowserDataWin()
+{
+    disposeOnce();
+}
+
+void BrowserDataWin::dispose()
+{
+    bInDtor = true;
+
+    aInvalidRegion.clear();
+    pHeaderBar.clear();
+    DragSourceHelper::dispose();
+    DropTargetHelper::dispose();
+    Control::dispose();
+}
+
+void BrowserDataWin::LeaveUpdateLock()
+{
+    if ( !--nUpdateLock )
+    {
+        DoOutstandingInvalidations();
+        if (bUpdateOnUnlock )
+        {
+            Control::PaintImmediately();
+            bUpdateOnUnlock = false;
+        }
+    }
+}
+
+void InitSettings_Impl(vcl::Window* pWin)
+{
+    const StyleSettings& rStyleSettings = pWin->GetSettings().GetStyleSettings();
+
+    pWin->ApplyControlFont(*pWin->GetOutDev(), rStyleSettings.GetFieldFont());
+    pWin->ApplyControlForeground(*pWin->GetOutDev(), rStyleSettings.GetWindowTextColor());
+    pWin->ApplyControlBackground(*pWin->GetOutDev(), rStyleSettings.GetWindowColor());
+}
+
+
+void BrowserDataWin::Update()
+{
+    if ( !nUpdateLock )
+        Control::PaintImmediately();
+    else
+        bUpdateOnUnlock = true;
+}
+
+
+void BrowserDataWin::DataChanged( const DataChangedEvent& rDCEvt )
+{
+    if ( (rDCEvt.GetType() == DataChangedEventType::SETTINGS) &&
+         (rDCEvt.GetFlags() & AllSettingsFlags::STYLE) )
+    {
+        InitSettings_Impl(this);
+        Invalidate();
+        InitSettings_Impl(GetParent());
+        GetParent()->Invalidate();
+        GetParent()->Resize();
+    }
+    else
+        Control::DataChanged( rDCEvt );
+}
+
+
+void BrowserDataWin::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect)
+{
+    if (!nUpdateLock && GetUpdateMode())
+    {
+        if (bInPaint)
+        {
+            aInvalidRegion.emplace_back(rRect);
+            return;
+        }
+        bInPaint = true;
+        GetParent()->PaintData(*this, rRenderContext, rRect);
+        bInPaint = false;
+        DoOutstandingInvalidations();
+    }
+    else
+    {
+        aInvalidRegion.emplace_back(rRect);
+    }
+}
+
+BrowseBox* BrowserDataWin::GetParent() const
+{
+    return static_cast<BrowseBox*>(Window::GetParent());
+}
+
+BrowseEvent BrowserDataWin::CreateBrowseEvent( const Point& rPosPixel )
+{
+    BrowseBox *pBox = GetParent();
+
+    // seek to row under mouse
+    sal_Int32 nRelRow = rPosPixel.Y() < 0
+            ? -1
+            : rPosPixel.Y() / pBox->GetDataRowHeight();
+    sal_Int32 nRow = nRelRow < 0 ? -1 : nRelRow + pBox->nTopRow;
+
+    // find column under mouse
+    tools::Long nMouseX = rPosPixel.X();
+    tools::Long nColX = 0;
+    size_t nCol;
+    for ( nCol = 0;
+          nCol < pBox->mvCols.size() && nColX < GetSizePixel().Width();
+          ++nCol )
+        if ( pBox->mvCols[ nCol ]->IsFrozen() || nCol >= pBox->nFirstCol )
+        {
+            nColX += pBox->mvCols[ nCol ]->Width();
+            if ( nMouseX < nColX )
+                break;
+        }
+    sal_uInt16 nColId = BROWSER_INVALIDID;
+    if ( nCol < pBox->mvCols.size() )
+        nColId = pBox->mvCols[ nCol ]->GetId();
+
+    // compute the field rectangle and field relative MouseEvent
+    tools::Rectangle aFieldRect;
+    if ( nCol < pBox->mvCols.size() )
+    {
+        nColX -= pBox->mvCols[ nCol ]->Width();
+        aFieldRect = tools::Rectangle(
+            Point( nColX, nRelRow * pBox->GetDataRowHeight() ),
+            Size( pBox->mvCols[ nCol ]->Width(),
+                  pBox->GetDataRowHeight() ) );
+    }
+
+    // assemble and return the BrowseEvent
+    return BrowseEvent( this, nRow, nCol, nColId, aFieldRect );
+}
+
+
+sal_Int8 BrowserDataWin::AcceptDrop( const AcceptDropEvent& _rEvt )
+{
+    bCallingDropCallback = true;
+    sal_Int8 nReturn = GetParent()->AcceptDrop( BrowserAcceptDropEvent( this, _rEvt ) );
+    bCallingDropCallback = false;
+    return nReturn;
+}
+
+
+sal_Int8 BrowserDataWin::ExecuteDrop( const ExecuteDropEvent& _rEvt )
+{
+    bCallingDropCallback = true;
+    sal_Int8 nReturn = GetParent()->ExecuteDrop( BrowserExecuteDropEvent( this, _rEvt ) );
+    bCallingDropCallback = false;
+    return nReturn;
+}
+
+
+void BrowserDataWin::StartDrag( sal_Int8 _nAction, const Point& _rPosPixel )
+{
+    if ( !GetParent()->bRowDividerDrag )
+    {
+        Point aEventPos( _rPosPixel );
+        aEventPos.AdjustY(GetParent()->GetTitleHeight() );
+        GetParent()->StartDrag( _nAction, aEventPos );
+    }
+}
+
+
+void BrowserDataWin::Command( const CommandEvent& rEvt )
+{
+    // scroll mouse event?
+    BrowseBox *pBox = GetParent();
+    if ( ( (rEvt.GetCommand() == CommandEventId::Wheel) ||
+           (rEvt.GetCommand() == CommandEventId::StartAutoScroll) ||
+           (rEvt.GetCommand() == CommandEventId::AutoScroll) ) &&
+         ( HandleScrollCommand( rEvt, pBox->aHScroll.get(), pBox->pVScroll ) ) )
+      return;
+
+    Point aEventPos( rEvt.GetMousePosPixel() );
+    sal_Int32 nRow = pBox->GetRowAtYPosPixel( aEventPos.Y(), false);
+    MouseEvent aMouseEvt( aEventPos, 1, MouseEventModifiers::SELECT, MOUSE_LEFT );
+    if ( CommandEventId::ContextMenu == rEvt.GetCommand() && rEvt.IsMouseEvent() &&
+         nRow < pBox->GetRowCount() && !pBox->IsRowSelected(nRow) )
+    {
+        bInCommand = true;
+        MouseButtonDown( aMouseEvt );
+        if( bInDtor )
+            return;
+        MouseButtonUp( aMouseEvt );
+        if( bInDtor )
+            return;
+        bInCommand = false;
+    }
+
+    aEventPos.AdjustY(GetParent()->GetTitleHeight() );
+    CommandEvent aEvt( aEventPos, rEvt.GetCommand(),
+                        rEvt.IsMouseEvent(), rEvt.GetEventData() );
+    bInCommand = true;
+    GetParent()->Command( aEvt );
+    if( bInDtor )
+        return;
+    bInCommand = false;
+
+    if ( CommandEventId::StartDrag == rEvt.GetCommand() )
+        MouseButtonUp( aMouseEvt );
+
+    Control::Command( rEvt );
+}
+
+
+bool BrowserDataWin::ImplRowDividerHitTest( const BrowserMouseEvent& _rEvent ) const
+{
+    if ( ! (  GetParent()->IsInteractiveRowHeightEnabled()
+           && ( _rEvent.GetRow() >= 0 )
+           && ( _rEvent.GetRow() < GetParent()->GetRowCount() )
+           && ( _rEvent.GetColumnId() == BrowseBox::HandleColumnId )
+           )
+       )
+       return false;
+
+    tools::Long nDividerDistance = GetParent()->GetDataRowHeight() - ( _rEvent.GetPosPixel().Y() % GetParent()->GetDataRowHeight() );
+    return ( nDividerDistance <= 4 );
+}
+
+
+void BrowserDataWin::MouseButtonDown( const MouseEvent& rEvt )
+{
+    aLastMousePos = OutputToScreenPixel( rEvt.GetPosPixel() );
+
+    BrowserMouseEvent aBrowserEvent( this, rEvt );
+    if ( ( aBrowserEvent.GetClicks() == 1 ) && ImplRowDividerHitTest( aBrowserEvent ) )
+    {
+        StartRowDividerDrag( aBrowserEvent.GetPosPixel() );
+        return;
+    }
+
+    GetParent()->MouseButtonDown( BrowserMouseEvent( this, rEvt ) );
+}
+
+
+void BrowserDataWin::MouseMove( const MouseEvent& rEvt )
+{
+    // avoid pseudo MouseMoves
+    Point aNewPos = OutputToScreenPixel( rEvt.GetPosPixel() );
+    if ( aNewPos == aLastMousePos )
+        return;
+    aLastMousePos = aNewPos;
+
+    // transform to a BrowseEvent
+    BrowserMouseEvent aBrowserEvent( this, rEvt );
+    GetParent()->MouseMove( aBrowserEvent );
+
+    // pointer shape
+    PointerStyle ePointerStyle = PointerStyle::Arrow;
+    if ( ImplRowDividerHitTest( aBrowserEvent ) )
+        ePointerStyle = PointerStyle::VSizeBar;
+    SetPointer( ePointerStyle );
+
+    // dragging out of the visible area?
+    if ( rEvt.IsLeft() &&
+         ( rEvt.GetPosPixel().Y() > GetSizePixel().Height() ||
+           rEvt.GetPosPixel().Y() < 0 ) )
+    {
+        // repeat the event
+        aRepeatEvt = rEvt;
+        aMouseTimer.Start();
+    }
+    else
+        // killing old repeat-event
+        if ( aMouseTimer.IsActive() )
+            aMouseTimer.Stop();
+}
+
+
+IMPL_LINK_NOARG(BrowserDataWin, RepeatedMouseMove, Timer *, void)
+{
+    GetParent()->MouseMove( BrowserMouseEvent( this, aRepeatEvt ) );
+}
+
+void BrowserDataWin::MouseButtonUp( const MouseEvent& rEvt )
+{
+    // avoid pseudo MouseMoves
+    Point aNewPos = OutputToScreenPixel( rEvt.GetPosPixel() );
+    aLastMousePos = aNewPos;
+
+    // simulate a move to the current position
+    MouseMove( rEvt );
+
+    // actual button up handling
+    ReleaseMouse();
+    if ( aMouseTimer.IsActive() )
+        aMouseTimer.Stop();
+    GetParent()->MouseButtonUp( BrowserMouseEvent( this, rEvt ) );
+}
+
+
+void BrowserDataWin::StartRowDividerDrag( const Point& _rStartPos )
+{
+    tools::Long nDataRowHeight = GetParent()->GetDataRowHeight();
+    // the exact separation pos of the two rows
+    tools::Long nDragRowDividerCurrentPos = _rStartPos.Y();
+    if ( ( nDragRowDividerCurrentPos % nDataRowHeight ) > nDataRowHeight / 2 )
+        nDragRowDividerCurrentPos += nDataRowHeight;
+    nDragRowDividerCurrentPos /= nDataRowHeight;
+    nDragRowDividerCurrentPos *= nDataRowHeight;
+
+    m_nDragRowDividerOffset = nDragRowDividerCurrentPos - _rStartPos.Y();
+
+    m_nDragRowDividerLimit = nDragRowDividerCurrentPos - nDataRowHeight;
+
+    GetParent()->bRowDividerDrag = true;
+    GetParent()->ImplStartTracking();
+
+    tools::Rectangle aDragSplitRect( 0, m_nDragRowDividerLimit, GetOutputSizePixel().Width(), nDragRowDividerCurrentPos );
+    ShowTracking( aDragSplitRect );
+
+    StartTracking();
+}
+
+
+void BrowserDataWin::Tracking( const TrackingEvent& rTEvt )
+{
+    if ( !GetParent()->bRowDividerDrag )
+        return;
+
+    Point aMousePos = rTEvt.GetMouseEvent().GetPosPixel();
+    // stop resizing at our bottom line
+    if ( aMousePos.Y() > GetOutputSizePixel().Height() )
+        aMousePos.setY( GetOutputSizePixel().Height() );
+
+    if ( rTEvt.IsTrackingEnded() )
+    {
+        HideTracking();
+        GetParent()->bRowDividerDrag = false;
+        GetParent()->ImplEndTracking();
+
+        if ( !rTEvt.IsTrackingCanceled() )
+        {
+            tools::Long nNewRowHeight = aMousePos.Y() + m_nDragRowDividerOffset - m_nDragRowDividerLimit;
+
+            // care for minimum row height
+            if ( nNewRowHeight < GetParent()->QueryMinimumRowHeight() )
+                nNewRowHeight = GetParent()->QueryMinimumRowHeight();
+
+            GetParent()->SetDataRowHeight( nNewRowHeight );
+            GetParent()->RowHeightChanged();
+        }
+    }
+    else
+    {
+        tools::Long nDragRowDividerCurrentPos = aMousePos.Y() + m_nDragRowDividerOffset;
+
+        // care for minimum row height
+        if ( nDragRowDividerCurrentPos < m_nDragRowDividerLimit + GetParent()->QueryMinimumRowHeight() )
+            nDragRowDividerCurrentPos = m_nDragRowDividerLimit + GetParent()->QueryMinimumRowHeight();
+
+        tools::Rectangle aDragSplitRect( 0, m_nDragRowDividerLimit, GetOutputSizePixel().Width(), nDragRowDividerCurrentPos );
+        ShowTracking( aDragSplitRect );
+    }
+}
+
+
+void BrowserDataWin::KeyInput( const KeyEvent& rEvt )
+{
+    // pass to parent window
+    if ( !GetParent()->ProcessKey( rEvt ) )
+        Control::KeyInput( rEvt );
+}
+
+
+void BrowserDataWin::RequestHelp( const HelpEvent& rHEvt )
+{
+    GetParent()->RequestHelp( rHEvt );
+}
+
+
+BrowseEvent::BrowseEvent( vcl::Window* pWindow,
+                          sal_Int32 nAbsRow, sal_uInt16 nColumn, sal_uInt16 nColumnId,
+                          const tools::Rectangle& rRect ):
+    pWin(pWindow),
+    aRect(rRect),
+    nRow(nAbsRow),
+    nCol(nColumn),
+    nColId(nColumnId)
+{
+}
+
+
+BrowserMouseEvent::BrowserMouseEvent( BrowserDataWin *pWindow,
+                          const MouseEvent& rEvt ):
+    MouseEvent(rEvt),
+    BrowseEvent( pWindow->CreateBrowseEvent( rEvt.GetPosPixel() ) )
+{
+}
+
+
+BrowserMouseEvent::BrowserMouseEvent( vcl::Window *pWindow, const MouseEvent& rEvt,
+                          sal_Int32 nAbsRow, sal_uInt16 nColumn, sal_uInt16 nColumnId,
+                          const tools::Rectangle& rRect ):
+    MouseEvent(rEvt),
+    BrowseEvent( pWindow, nAbsRow, nColumn, nColumnId, rRect )
+{
+}
+
+
+BrowserAcceptDropEvent::BrowserAcceptDropEvent( BrowserDataWin *pWindow, const AcceptDropEvent& rEvt )
+    :AcceptDropEvent(rEvt)
+    ,BrowseEvent( pWindow->CreateBrowseEvent( rEvt.maPosPixel ) )
+{
+}
+
+
+BrowserExecuteDropEvent::BrowserExecuteDropEvent( BrowserDataWin *pWindow, const ExecuteDropEvent& rEvt )
+    :ExecuteDropEvent(rEvt)
+    ,BrowseEvent( pWindow->CreateBrowseEvent( rEvt.maPosPixel ) )
+{
+}
+
+
+void BrowserDataWin::SetUpdateMode( bool bMode )
+{
+    DBG_ASSERT( !bUpdateMode || aInvalidRegion.empty(), "invalid region not empty" );
+    if ( bMode == bUpdateMode )
+        return;
+
+    bUpdateMode = bMode;
+    if ( bMode )
+        DoOutstandingInvalidations();
+}
+
+
+void BrowserDataWin::DoOutstandingInvalidations()
+{
+    for (const auto& rRect : aInvalidRegion)
+    {
+        vcl::Region aRegion(rRect);
+        Control::ImplInvalidate( &aRegion, InvalidateFlags::NONE );
+    }
+    aInvalidRegion.clear();
+}
+
+void BrowserDataWin::ImplInvalidate( const vcl::Region* pRegion, InvalidateFlags nFlags )
+{
+    if ( !GetUpdateMode() )
+    {
+        aInvalidRegion.clear();
+        if (!pRegion)
+            aInvalidRegion.emplace_back( Point( 0, 0 ), GetOutputSizePixel() );
+        else
+            aInvalidRegion.emplace_back( pRegion->GetBoundRect() );
+    }
+    else
+        Window::ImplInvalidate( pRegion, nFlags );
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */