Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

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

1 files changed, 1220 insertions, 0 deletions

diff --git a/sfx2/source/control/thumbnailview.cxx b/sfx2/source/control/thumbnailview.cxx
new file mode 100644
index 000000000..a678df5b1
--- /dev/null
+++ b/sfx2/source/control/thumbnailview.cxx
@@ -0,0 +1,1220 @@
+/* -*- 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/.
+ */
+
+#include <sfx2/thumbnailview.hxx>
+#include <sfx2/thumbnailviewitem.hxx>
+
+#include <utility>
+
+#include "thumbnailviewacc.hxx"
+
+#include <basegfx/color/bcolortools.hxx>
+#include <comphelper/processfactory.hxx>
+#include <drawinglayer/attribute/fontattribute.hxx>
+#include <drawinglayer/primitive2d/PolyPolygonColorPrimitive2D.hxx>
+#include <drawinglayer/primitive2d/Primitive2DContainer.hxx>
+#include <drawinglayer/primitive2d/textlayoutdevice.hxx>
+#include <drawinglayer/processor2d/baseprocessor2d.hxx>
+#include <drawinglayer/processor2d/processorfromoutputdevice.hxx>
+#include <o3tl/safeint.hxx>
+#include <rtl/ustring.hxx>
+#include <sal/log.hxx>
+#include <svtools/optionsdrawinglayer.hxx>
+#include <tools/diagnose_ex.h>
+#include <unotools/ucbstreamhelper.hxx>
+#include <vcl/svapp.hxx>
+#include <vcl/settings.hxx>
+#include <vcl/event.hxx>
+#include <vcl/filter/PngImageReader.hxx>
+#include <vcl/weldutils.hxx>
+
+#include <com/sun/star/accessibility/AccessibleEventId.hpp>
+#include <com/sun/star/embed/ElementModes.hpp>
+#include <com/sun/star/embed/StorageFactory.hpp>
+#include <com/sun/star/embed/XStorage.hpp>
+
+#include <memory>
+
+using namespace basegfx;
+using namespace basegfx::utils;
+using namespace drawinglayer::attribute;
+using namespace drawinglayer::primitive2d;
+
+constexpr int gnFineness = 5;
+
+bool ThumbnailView::renameItem(ThumbnailViewItem*, const OUString&)
+{
+    // Do nothing by default
+    return false;
+}
+
+BitmapEx ThumbnailView::readThumbnail(const OUString &msURL)
+{
+    using namespace ::com::sun::star;
+    using namespace ::com::sun::star::uno;
+
+    // Load the thumbnail from a template document.
+    uno::Reference<io::XInputStream> xIStream;
+
+    uno::Reference< uno::XComponentContext > xContext(::comphelper::getProcessComponentContext());
+    try
+    {
+        uno::Reference<lang::XSingleServiceFactory> xStorageFactory = embed::StorageFactory::create(xContext);
+
+        uno::Sequence<uno::Any> aArgs{ uno::Any(msURL), uno::Any(embed::ElementModes::READ) };
+        uno::Reference<embed::XStorage> xDocStorage (
+            xStorageFactory->createInstanceWithArguments(aArgs),
+            uno::UNO_QUERY);
+
+        try
+        {
+            if (xDocStorage.is())
+            {
+                uno::Reference<embed::XStorage> xStorage (
+                    xDocStorage->openStorageElement(
+                        "Thumbnails",
+                        embed::ElementModes::READ));
+                if (xStorage.is())
+                {
+                    uno::Reference<io::XStream> xThumbnailCopy (
+                        xStorage->cloneStreamElement("thumbnail.png"));
+                    if (xThumbnailCopy.is())
+                        xIStream = xThumbnailCopy->getInputStream();
+                }
+            }
+        }
+        catch (const uno::Exception&)
+        {
+            TOOLS_WARN_EXCEPTION("sfx",
+                "caught exception while trying to access Thumbnail/thumbnail.png of " << msURL);
+        }
+
+        try
+        {
+            // An (older) implementation had a bug - The storage
+            // name was "Thumbnail" instead of "Thumbnails".  The
+            // old name is still used as fallback but this code can
+            // be removed soon.
+            if ( ! xIStream.is())
+            {
+                uno::Reference<embed::XStorage> xStorage (
+                    xDocStorage->openStorageElement( "Thumbnail",
+                        embed::ElementModes::READ));
+                if (xStorage.is())
+                {
+                    uno::Reference<io::XStream> xThumbnailCopy (
+                        xStorage->cloneStreamElement("thumbnail.png"));
+                    if (xThumbnailCopy.is())
+                        xIStream = xThumbnailCopy->getInputStream();
+                }
+            }
+        }
+        catch (const uno::Exception&)
+        {
+            TOOLS_WARN_EXCEPTION("sfx",
+                "caught exception while trying to access Thumbnails/thumbnail.png of " << msURL);
+        }
+    }
+    catch (const uno::Exception&)
+    {
+        TOOLS_WARN_EXCEPTION("sfx",
+            "caught exception while trying to access thumbnail of "
+            << msURL);
+    }
+
+    // Extract the image from the stream.
+    BitmapEx aThumbnail;
+    if (xIStream.is())
+    {
+        std::unique_ptr<SvStream> pStream (
+            ::utl::UcbStreamHelper::CreateStream (xIStream));
+        vcl::PngImageReader aReader (*pStream);
+        aThumbnail = aReader.read ();
+    }
+
+    // Note that the preview is returned without scaling it to the desired
+    // width.  This gives the caller the chance to take advantage of a
+    // possibly larger resolution then was asked for.
+    return aThumbnail;
+}
+
+ThumbnailView::ThumbnailView(std::unique_ptr<weld::ScrolledWindow> xWindow, std::unique_ptr<weld::Menu> xMenu)
+    : mnThumbnailHeight(0)
+    , mnDisplayHeight(0)
+    , mnVItemSpace(-1)
+    , mbAllowVScrollBar(xWindow->get_vpolicy() != VclPolicyType::NEVER)
+    , mbSelectOnFocus(true)
+    , mpItemAttrs(new ThumbnailItemAttributes)
+    , mxScrolledWindow(std::move(xWindow))
+    , mxContextMenu(std::move(xMenu))
+{
+    ImplInit();
+    mxScrolledWindow->connect_vadjustment_changed(LINK(this, ThumbnailView, ImplScrollHdl));
+}
+
+ThumbnailView::~ThumbnailView()
+{
+    css::uno::Reference< css::lang::XComponent> xComponent(mxAccessible, css::uno::UNO_QUERY);
+
+    if (xComponent.is())
+        xComponent->dispose();
+
+    mpItemAttrs.reset();
+
+    ImplDeleteItems();
+}
+
+bool ThumbnailView::MouseMove(const MouseEvent& rMEvt)
+{
+    size_t nItemCount = mFilteredItemList.size();
+    Point aPoint = rMEvt.GetPosPixel();
+
+    for (size_t i = 0; i < nItemCount; i++)
+    {
+        ThumbnailViewItem *pItem = mFilteredItemList[i];
+        ::tools::Rectangle aToInvalidate(pItem->updateHighlight(pItem->mbVisible && !rMEvt.IsLeaveWindow(), aPoint));
+        if (!aToInvalidate.IsEmpty() && IsReallyVisible() && IsUpdateMode())
+            Invalidate(aToInvalidate);
+    }
+
+    return true;
+}
+
+OUString ThumbnailView::RequestHelp(tools::Rectangle& rHelpRect)
+{
+    if (!mbShowTooltips)
+        return OUString();
+
+    Point aPos = rHelpRect.TopLeft();
+    size_t nItemCount = mFilteredItemList.size();
+    for (size_t i = 0; i < nItemCount; i++)
+    {
+        ThumbnailViewItem *pItem = mFilteredItemList[i];
+        if (!pItem->mbVisible)
+            continue;
+        const tools::Rectangle& rDrawArea = pItem->getDrawArea();
+        if (pItem->mbVisible && rDrawArea.Contains(aPos))
+        {
+            rHelpRect = rDrawArea;
+            return pItem->getHelpText();
+        }
+    }
+
+    return OUString();
+}
+
+void ThumbnailView::AppendItem(std::unique_ptr<ThumbnailViewItem> pItem)
+{
+    if (maFilterFunc(pItem.get()))
+    {
+        // Save current start,end range, iterator might get invalidated
+        size_t nSelStartPos = 0;
+        ThumbnailViewItem *pSelStartItem = nullptr;
+
+        if (mpStartSelRange != mFilteredItemList.end())
+        {
+            pSelStartItem = *mpStartSelRange;
+            nSelStartPos = mpStartSelRange - mFilteredItemList.begin();
+        }
+
+        mFilteredItemList.push_back(pItem.get());
+        mpStartSelRange = pSelStartItem != nullptr ? mFilteredItemList.begin() + nSelStartPos : mFilteredItemList.end();
+    }
+
+    mItemList.push_back(std::move(pItem));
+}
+
+void ThumbnailView::ImplInit()
+{
+    mnItemWidth = 0;
+    mnItemHeight = 0;
+    mnItemPadding = 0;
+    mnVisLines = 0;
+    mnLines = 0;
+    mnFirstLine = 0;
+    mnCols = 0;
+    mbScroll = false;
+    mbHasVisibleItems = false;
+    mbShowTooltips = false;
+    mbDrawMnemonics = false;
+    maFilterFunc = ViewFilterAll();
+
+    const StyleSettings& rSettings = Application::GetSettings().GetStyleSettings();
+    maFillColor = rSettings.GetFieldColor();
+    maTextColor = rSettings.GetWindowTextColor();
+    maHighlightColor = rSettings.GetHighlightColor();
+    maHighlightTextColor = rSettings.GetHighlightTextColor();
+    maSelectHighlightColor = rSettings.GetActiveColor();
+    maSelectHighlightTextColor = rSettings.GetActiveTextColor();
+
+    mfHighlightTransparence = SvtOptionsDrawinglayer::GetTransparentSelectionPercent() * 0.01;
+
+    mpStartSelRange = mFilteredItemList.end();
+
+    UpdateColors();
+
+    mpItemAttrs->nMaxTextLength = 0;
+}
+
+void ThumbnailView::UpdateColors()
+{
+    mpItemAttrs->aFillColor = maFillColor.getBColor();
+    mpItemAttrs->aTextColor = maTextColor.getBColor();
+    mpItemAttrs->aHighlightColor = maHighlightColor.getBColor();
+    mpItemAttrs->aHighlightTextColor = maHighlightTextColor.getBColor();
+    mpItemAttrs->aSelectHighlightColor = maSelectHighlightColor.getBColor();
+    mpItemAttrs->aSelectHighlightTextColor = maSelectHighlightTextColor.getBColor();
+    mpItemAttrs->fHighlightTransparence = mfHighlightTransparence;
+}
+
+void ThumbnailView::ImplDeleteItems()
+{
+    const size_t n = mItemList.size();
+
+    for ( size_t i = 0; i < n; ++i )
+    {
+        ThumbnailViewItem *const pItem = mItemList[i].get();
+
+        // deselect all current selected items and fire events
+        if (pItem->isSelected())
+        {
+            pItem->setSelection(false);
+            maItemStateHdl.Call(pItem);
+
+            // fire accessible event???
+        }
+
+        if ( pItem->isVisible() && ImplHasAccessibleListeners() )
+        {
+            css::uno::Any aOldAny, aNewAny;
+
+            aOldAny <<= pItem->GetAccessible( false );
+            ImplFireAccessibleEvent( css::accessibility::AccessibleEventId::CHILD, aOldAny, aNewAny );
+        }
+
+        mItemList[i].reset();
+    }
+
+    mItemList.clear();
+    mFilteredItemList.clear();
+
+    mpStartSelRange = mFilteredItemList.end();
+}
+
+void ThumbnailView::DrawItem(ThumbnailViewItem const *pItem)
+{
+    if (pItem->isVisible())
+    {
+        ::tools::Rectangle aRect = pItem->getDrawArea();
+
+        if (!aRect.IsEmpty())
+            Invalidate(aRect);
+    }
+}
+
+void ThumbnailView::OnItemDblClicked (ThumbnailViewItem*)
+{
+}
+
+css::uno::Reference< css::accessibility::XAccessible > ThumbnailView::CreateAccessible()
+{
+    mxAccessible.set(new ThumbnailViewAcc(this));
+    return mxAccessible;
+}
+
+const css::uno::Reference< css::accessibility::XAccessible > & ThumbnailView::getAccessible() const
+{
+    return mxAccessible;
+}
+
+void ThumbnailView::CalculateItemPositions(bool bScrollBarUsed)
+{
+    if (!mnItemHeight || !mnItemWidth)
+        return;
+
+    Size        aWinSize = GetOutputSizePixel();
+    size_t      nItemCount = mFilteredItemList.size();
+
+    // calculate window scroll ratio
+    float nScrollRatio;
+    if (bScrollBarUsed)
+    {
+        nScrollRatio = static_cast<float>(mxScrolledWindow->vadjustment_get_value()) /
+                       static_cast<float>(mxScrolledWindow->vadjustment_get_upper() -
+                                          mxScrolledWindow->vadjustment_get_page_size());
+    }
+    else
+        nScrollRatio = 0;
+
+    // calculate ScrollBar width
+    tools::Long nScrBarWidth = mbAllowVScrollBar ? mxScrolledWindow->get_scroll_thickness() : 0;
+
+    // calculate maximum number of visible columns
+    mnCols = static_cast<sal_uInt16>((aWinSize.Width()-nScrBarWidth) / mnItemWidth);
+
+    if (!mnCols)
+        mnCols = 1;
+
+    // calculate maximum number of visible rows
+    mnVisLines = static_cast<sal_uInt16>(aWinSize.Height() / mnItemHeight);
+
+    // calculate empty space
+    tools::Long nHSpace = aWinSize.Width()-nScrBarWidth - mnCols*mnItemWidth;
+    tools::Long nVSpace = aWinSize.Height() - mnVisLines*mnItemHeight;
+    tools::Long nHItemSpace = nHSpace / (mnCols+1);
+    tools::Long nVItemSpace = mnVItemSpace;
+    if (nVItemSpace == -1) // auto, split up extra space to use as vertical spacing
+        nVItemSpace = nVSpace / (mnVisLines+1);
+
+    // calculate maximum number of rows
+    // Floor( (M+N-1)/N )==Ceiling( M/N )
+    mnLines = (static_cast<tools::Long>(nItemCount)+mnCols-1) / mnCols;
+
+    if ( !mnLines )
+        mnLines = 1;
+
+    if ( mnLines <= mnVisLines )
+        mnFirstLine = 0;
+    else if ( mnFirstLine > o3tl::make_unsigned(mnLines-mnVisLines) )
+        mnFirstLine = static_cast<sal_uInt16>(mnLines-mnVisLines);
+
+    mbHasVisibleItems = true;
+
+    tools::Long nFullSteps = (mnLines > mnVisLines) ? mnLines - mnVisLines + 1 : 1;
+
+    tools::Long nItemHeightOffset = mnItemHeight + nVItemSpace;
+    tools::Long nHiddenLines = static_cast<tools::Long>((nFullSteps - 1) * nScrollRatio);
+
+    // calculate offsets
+    tools::Long nStartX = nHItemSpace;
+    tools::Long nStartY = nVItemSpace;
+
+    // calculate and draw items
+    tools::Long x = nStartX;
+    tools::Long y = nStartY - ((nFullSteps - 1) * nScrollRatio - nHiddenLines) * nItemHeightOffset;
+
+    // draw items
+    // Unless we are scrolling (via scrollbar) we just use the precalculated
+    // mnFirstLine -- our nHiddenLines calculation takes into account only
+    // what the user has done with the scrollbar but not any changes of selection
+    // using the keyboard, meaning we could accidentally hide the selected item
+    // if we believe the scrollbar (fdo#72287).
+    size_t nFirstItem = (bScrollBarUsed ? nHiddenLines : mnFirstLine) * mnCols;
+    size_t nLastItem = nFirstItem + (mnVisLines + 1) * mnCols;
+
+    // If want also draw parts of items in the last line,
+    // then we add one more line if parts of this line are visible
+
+    size_t nCurCount = 0;
+    for ( size_t i = 0; i < nItemCount; i++ )
+    {
+        ThumbnailViewItem *const pItem = mFilteredItemList[i];
+
+        if ((nCurCount >= nFirstItem) && (nCurCount < nLastItem))
+        {
+            if( !pItem->isVisible())
+            {
+                if ( ImplHasAccessibleListeners() )
+                {
+                    css::uno::Any aOldAny, aNewAny;
+
+                    aNewAny <<= pItem->GetAccessible( false );
+                    ImplFireAccessibleEvent( css::accessibility::AccessibleEventId::CHILD, aOldAny, aNewAny );
+                }
+
+                pItem->show(true);
+
+                maItemStateHdl.Call(pItem);
+            }
+
+            pItem->setDrawArea(::tools::Rectangle( Point(x,y), Size(mnItemWidth, mnItemHeight) ));
+            pItem->calculateItemsPosition(mnThumbnailHeight,mnItemPadding,mpItemAttrs->nMaxTextLength,mpItemAttrs.get());
+
+            if ( !((nCurCount+1) % mnCols) )
+            {
+                x = nStartX;
+                y += mnItemHeight+nVItemSpace;
+            }
+            else
+                x += mnItemWidth+nHItemSpace;
+        }
+        else
+        {
+            if( pItem->isVisible())
+            {
+                if ( ImplHasAccessibleListeners() )
+                {
+                    css::uno::Any aOldAny, aNewAny;
+
+                    aOldAny <<= pItem->GetAccessible( false );
+                    ImplFireAccessibleEvent( css::accessibility::AccessibleEventId::CHILD, aOldAny, aNewAny );
+                }
+
+                pItem->show(false);
+
+                maItemStateHdl.Call(pItem);
+            }
+
+        }
+
+        ++nCurCount;
+    }
+
+    // arrange ScrollBar, set values and show it
+    mnLines = (nCurCount+mnCols-1)/mnCols;
+
+    // check if scroll is needed
+    mbScroll = mnLines > mnVisLines;
+
+    mxScrolledWindow->vadjustment_set_upper(mnLines * gnFineness);
+    mxScrolledWindow->vadjustment_set_page_size(mnVisLines * gnFineness);
+    if (!bScrollBarUsed)
+        mxScrolledWindow->vadjustment_set_value(static_cast<tools::Long>(mnFirstLine)*gnFineness);
+    tools::Long nPageSize = mnVisLines;
+    if ( nPageSize < 1 )
+        nPageSize = 1;
+    mxScrolledWindow->vadjustment_set_page_increment(nPageSize*gnFineness);
+    if (mbAllowVScrollBar)
+        mxScrolledWindow->set_vpolicy(mbScroll ? VclPolicyType::ALWAYS : VclPolicyType::NEVER);
+}
+
+size_t ThumbnailView::ImplGetItem( const Point& rPos ) const
+{
+    if ( !mbHasVisibleItems )
+    {
+        return THUMBNAILVIEW_ITEM_NOTFOUND;
+    }
+
+    for (size_t i = 0; i < mFilteredItemList.size(); ++i)
+    {
+        if (mFilteredItemList[i]->isVisible() && mFilteredItemList[i]->getDrawArea().Contains(rPos))
+            return i;
+    }
+
+    return THUMBNAILVIEW_ITEM_NOTFOUND;
+}
+
+ThumbnailViewItem* ThumbnailView::ImplGetItem( size_t nPos )
+{
+    return ( nPos < mFilteredItemList.size() ) ? mFilteredItemList[nPos] : nullptr;
+}
+
+sal_uInt16 ThumbnailView::ImplGetVisibleItemCount() const
+{
+    sal_uInt16 nRet = 0;
+    const size_t nItemCount = mItemList.size();
+
+    for ( size_t n = 0; n < nItemCount; ++n )
+    {
+        if ( mItemList[n]->isVisible() )
+            ++nRet;
+    }
+
+    return nRet;
+}
+
+ThumbnailViewItem* ThumbnailView::ImplGetVisibleItem( sal_uInt16 nVisiblePos )
+{
+    const size_t nItemCount = mItemList.size();
+
+    for ( size_t n = 0; n < nItemCount; ++n )
+    {
+        ThumbnailViewItem *const pItem = mItemList[n].get();
+
+        if ( pItem->isVisible() && !nVisiblePos-- )
+            return pItem;
+    }
+
+    return nullptr;
+}
+
+void ThumbnailView::ImplFireAccessibleEvent( short nEventId, const css::uno::Any& rOldValue, const css::uno::Any& rNewValue )
+{
+    ThumbnailViewAcc* pAcc = ThumbnailViewAcc::getImplementation(mxAccessible);
+
+    if( pAcc )
+        pAcc->FireAccessibleEvent( nEventId, rOldValue, rNewValue );
+}
+
+bool ThumbnailView::ImplHasAccessibleListeners() const
+{
+    ThumbnailViewAcc* pAcc = ThumbnailViewAcc::getImplementation(mxAccessible);
+    return( pAcc && pAcc->HasAccessibleListeners() );
+}
+
+IMPL_LINK_NOARG(ThumbnailView, ImplScrollHdl, weld::ScrolledWindow&, void)
+{
+    CalculateItemPositions(true);
+    if (IsReallyVisible() && IsUpdateMode())
+        Invalidate();
+}
+
+bool ThumbnailView::KeyInput( const KeyEvent& rKEvt )
+{
+    bool bHandled = true;
+
+    // Get the last selected item in the list
+    size_t nLastPos = 0;
+    bool bFoundLast = false;
+    for ( tools::Long i = mFilteredItemList.size() - 1; !bFoundLast && i >= 0; --i )
+    {
+        ThumbnailViewItem* pItem = mFilteredItemList[i];
+        if ( pItem->isSelected() )
+        {
+            nLastPos = i;
+            bFoundLast = true;
+        }
+    }
+
+    bool bValidRange = false;
+    bool bHasSelRange = mpStartSelRange != mFilteredItemList.end();
+    size_t nNextPos = nLastPos;
+    vcl::KeyCode aKeyCode = rKEvt.GetKeyCode();
+    ThumbnailViewItem* pNext = nullptr;
+
+    if (aKeyCode.IsShift() && bHasSelRange)
+    {
+        //If the last element selected is the start range position
+        //search for the first selected item
+        size_t nSelPos = mpStartSelRange - mFilteredItemList.begin();
+
+        if (nLastPos == nSelPos)
+        {
+            while (nLastPos && mFilteredItemList[nLastPos-1]->isSelected())
+                --nLastPos;
+        }
+    }
+
+    switch ( aKeyCode.GetCode() )
+    {
+        case KEY_RIGHT:
+            if (!mFilteredItemList.empty())
+            {
+                if ( bFoundLast && nLastPos + 1 < mFilteredItemList.size() )
+                {
+                    bValidRange = true;
+                    nNextPos = nLastPos + 1;
+                }
+
+                pNext = mFilteredItemList[nNextPos];
+            }
+            break;
+        case KEY_LEFT:
+            if (!mFilteredItemList.empty())
+            {
+                if ( nLastPos > 0 )
+                {
+                    bValidRange = true;
+                    nNextPos = nLastPos - 1;
+                }
+
+                pNext = mFilteredItemList[nNextPos];
+            }
+            break;
+        case KEY_DOWN:
+            if (!mFilteredItemList.empty())
+            {
+                if ( bFoundLast )
+                {
+                    //If we are in the second last row just go the one in
+                    //the row below, if there's not row below just go to the
+                    //last item but for the last row don't do anything.
+                    if ( nLastPos + mnCols < mFilteredItemList.size( ) )
+                    {
+                        bValidRange = true;
+                        nNextPos = nLastPos + mnCols;
+                    }
+                    else
+                    {
+                        int curRow = nLastPos/mnCols;
+
+                        if (curRow < mnLines-1)
+                            nNextPos = mFilteredItemList.size()-1;
+                    }
+                }
+
+                pNext = mFilteredItemList[nNextPos];
+            }
+            break;
+        case KEY_UP:
+            if (!mFilteredItemList.empty())
+            {
+                if ( nLastPos >= mnCols )
+                {
+                    bValidRange = true;
+                    nNextPos = nLastPos - mnCols;
+                }
+
+                pNext = mFilteredItemList[nNextPos];
+            }
+            break;
+        case KEY_RETURN:
+            {
+                if ( bFoundLast )
+                    OnItemDblClicked( mFilteredItemList[nLastPos] );
+            }
+            [[fallthrough]];
+        default:
+            bHandled = CustomWidgetController::KeyInput(rKEvt);
+    }
+
+    if ( pNext )
+    {
+        if (aKeyCode.IsShift() && bValidRange)
+        {
+            std::pair<size_t,size_t> aRange;
+            size_t nSelPos = mpStartSelRange - mFilteredItemList.begin();
+
+            if (nLastPos < nSelPos)
+            {
+                if (nNextPos > nLastPos)
+                {
+                    if ( nNextPos > nSelPos)
+                        aRange = std::make_pair(nLastPos,nNextPos);
+                    else
+                        aRange = std::make_pair(nLastPos,nNextPos-1);
+                }
+                else
+                    aRange = std::make_pair(nNextPos,nLastPos-1);
+            }
+            else if (nLastPos == nSelPos)
+            {
+                if (nNextPos > nLastPos)
+                    aRange = std::make_pair(nLastPos+1,nNextPos);
+                else
+                    aRange = std::make_pair(nNextPos,nLastPos-1);
+            }
+            else
+            {
+                if (nNextPos > nLastPos)
+                    aRange = std::make_pair(nLastPos+1,nNextPos);
+                else
+                {
+                    if ( nNextPos < nSelPos)
+                        aRange = std::make_pair(nNextPos,nLastPos);
+                    else
+                        aRange = std::make_pair(nNextPos+1,nLastPos);
+                }
+            }
+
+            for (size_t i = aRange.first; i <= aRange.second; ++i)
+            {
+                if (i != nSelPos)
+                {
+                    ThumbnailViewItem *pCurItem = mFilteredItemList[i];
+
+                    pCurItem->setSelection(!pCurItem->isSelected());
+
+                    DrawItem(pCurItem);
+
+                    maItemStateHdl.Call(pCurItem);
+                }
+            }
+        }
+        else if (!aKeyCode.IsShift())
+        {
+            deselectItems();
+            SelectItem(pNext->mnId);
+
+            //Mark it as the selection range start position
+            mpStartSelRange = mFilteredItemList.begin() + nNextPos;
+        }
+
+        MakeItemVisible(pNext->mnId);
+    }
+    return bHandled;
+}
+
+void ThumbnailView::MakeItemVisible( sal_uInt16 nItemId )
+{
+    // Get the item row
+    size_t nPos = 0;
+    bool bFound = false;
+    for ( size_t i = 0; !bFound && i < mFilteredItemList.size(); ++i )
+    {
+        ThumbnailViewItem* pItem = mFilteredItemList[i];
+        if ( pItem->mnId == nItemId )
+        {
+            nPos = i;
+            bFound = true;
+        }
+    }
+    sal_uInt16 nRow = mnCols ? nPos / mnCols : 0;
+
+    // Move the visible rows as little as possible to include that one
+    if ( nRow < mnFirstLine )
+        mnFirstLine = nRow;
+    else if ( nRow > mnFirstLine + mnVisLines )
+        mnFirstLine = nRow - mnVisLines;
+
+    CalculateItemPositions();
+    Invalidate();
+}
+
+bool ThumbnailView::MouseButtonDown( const MouseEvent& rMEvt )
+{
+    GrabFocus();
+
+    if (!rMEvt.IsLeft())
+    {
+        return CustomWidgetController::MouseButtonDown( rMEvt );
+    }
+
+    size_t nPos = ImplGetItem(rMEvt.GetPosPixel());
+    ThumbnailViewItem* pItem = ImplGetItem(nPos);
+
+    if ( !pItem )
+    {
+        deselectItems();
+        return CustomWidgetController::MouseButtonDown( rMEvt );
+    }
+
+    if ( rMEvt.GetClicks() == 2 )
+    {
+        OnItemDblClicked(pItem);
+        return true;
+    }
+
+    if(rMEvt.GetClicks() == 1)
+    {
+        if (rMEvt.IsMod1())
+        {
+            //Keep selected item group state and just invert current desired one state
+            pItem->setSelection(!pItem->isSelected());
+
+            //This one becomes the selection range start position if it changes its state to selected otherwise resets it
+            mpStartSelRange = pItem->isSelected() ? mFilteredItemList.begin() + nPos : mFilteredItemList.end();
+        }
+        else if (rMEvt.IsShift() && mpStartSelRange != mFilteredItemList.end())
+        {
+            std::pair<size_t,size_t> aNewRange;
+            aNewRange.first = mpStartSelRange - mFilteredItemList.begin();
+            aNewRange.second = nPos;
+
+            if (aNewRange.first > aNewRange.second)
+                std::swap(aNewRange.first,aNewRange.second);
+
+            //Deselect the ones outside of it
+            for (size_t i = 0, n = mFilteredItemList.size(); i < n; ++i)
+            {
+                ThumbnailViewItem *pCurItem  = mFilteredItemList[i];
+
+                if (pCurItem->isSelected() && (i < aNewRange.first || i > aNewRange.second))
+                {
+                    pCurItem->setSelection(false);
+
+                    DrawItem(pCurItem);
+
+                    maItemStateHdl.Call(pCurItem);
+                }
+            }
+
+            size_t nSelPos = mpStartSelRange - mFilteredItemList.begin();
+
+            //Select the items between start range and the selected item
+            if (nSelPos != nPos)
+            {
+                int dir = nSelPos < nPos ? 1 : -1;
+                size_t nCurPos = nSelPos + dir;
+
+                while (nCurPos != nPos)
+                {
+                    ThumbnailViewItem *pCurItem  = mFilteredItemList[nCurPos];
+
+                    if (!pCurItem->isSelected())
+                    {
+                        pCurItem->setSelection(true);
+
+                        DrawItem(pCurItem);
+
+                        maItemStateHdl.Call(pCurItem);
+                    }
+
+                    nCurPos += dir;
+                }
+            }
+
+            pItem->setSelection(true);
+        }
+        else
+        {
+            //If we got a group of selected items deselect the rest and only keep the desired one
+            //mark items as not selected to not fire unnecessary change state events.
+            pItem->setSelection(false);
+            deselectItems();
+            pItem->setSelection(true);
+
+            //Mark as initial selection range position and reset end one
+            mpStartSelRange = mFilteredItemList.begin() + nPos;
+        }
+
+        if (!pItem->isHighlighted())
+            DrawItem(pItem);
+
+        maItemStateHdl.Call(pItem);
+
+        //fire accessible event??
+    }
+    return true;
+}
+
+void ThumbnailView::SetDrawingArea(weld::DrawingArea* pDrawingArea)
+{
+    CustomWidgetController::SetDrawingArea(pDrawingArea);
+
+    OutputDevice& rDevice = pDrawingArea->get_ref_device();
+    weld::SetPointFont(rDevice, pDrawingArea->get_font());
+    mpItemAttrs->aFontAttr = getFontAttributeFromVclFont(mpItemAttrs->aFontSize, rDevice.GetFont(), false, true);
+
+    SetOutputSizePixel(pDrawingArea->get_preferred_size());
+}
+
+void ThumbnailView::Paint(vcl::RenderContext& rRenderContext, const ::tools::Rectangle& /*rRect*/)
+{
+    rRenderContext.Push(vcl::PushFlags::ALL);
+
+    rRenderContext.SetTextFillColor();
+    rRenderContext.SetBackground(maFillColor);
+
+    size_t nItemCount = mItemList.size();
+
+    // Draw background
+    drawinglayer::primitive2d::Primitive2DContainer aSeq(1);
+    aSeq[0] = drawinglayer::primitive2d::Primitive2DReference(
+            new PolyPolygonColorPrimitive2D(
+                    B2DPolyPolygon( ::tools::Polygon(::tools::Rectangle(Point(), GetOutputSizePixel()), 0, 0).getB2DPolygon()),
+                    maFillColor.getBColor()));
+
+    // Create the processor and process the primitives
+    const drawinglayer::geometry::ViewInformation2D aNewViewInfos;
+
+    std::unique_ptr<drawinglayer::processor2d::BaseProcessor2D> pProcessor(
+        drawinglayer::processor2d::createBaseProcessor2DFromOutputDevice(rRenderContext, aNewViewInfos));
+    pProcessor->process(aSeq);
+
+    // draw items
+    for (size_t i = 0; i < nItemCount; i++)
+    {
+        ThumbnailViewItem *const pItem = mItemList[i].get();
+        if (!pItem->isVisible())
+            continue;
+        pItem->Paint(pProcessor.get(), mpItemAttrs.get());
+    }
+
+    rRenderContext.Pop();
+}
+
+void ThumbnailView::GetFocus()
+{
+    if (mbSelectOnFocus)
+    {
+        // Select the first item if nothing selected
+        int nSelected = -1;
+        for (size_t i = 0, n = mItemList.size(); i < n && nSelected == -1; ++i)
+        {
+            if (mItemList[i]->isSelected())
+                nSelected = i;
+        }
+
+        if (nSelected == -1 && !mItemList.empty())
+        {
+            ThumbnailViewItem* pFirst = nullptr;
+            if (!mFilteredItemList.empty()) {
+                pFirst = mFilteredItemList[0];
+            } else {
+                pFirst = mItemList[0].get();
+            }
+
+            SelectItem(pFirst->mnId);
+        }
+    }
+
+    // Tell the accessible object that we got the focus.
+    ThumbnailViewAcc* pAcc = ThumbnailViewAcc::getImplementation(mxAccessible);
+    if( pAcc )
+        pAcc->GetFocus();
+
+    CustomWidgetController::GetFocus();
+}
+
+void ThumbnailView::LoseFocus()
+{
+    CustomWidgetController::LoseFocus();
+
+    // Tell the accessible object that we lost the focus.
+    ThumbnailViewAcc* pAcc = ThumbnailViewAcc::getImplementation(mxAccessible);
+    if( pAcc )
+        pAcc->LoseFocus();
+}
+
+void ThumbnailView::Resize()
+{
+    CustomWidgetController::Resize();
+    CalculateItemPositions();
+
+    if ( IsReallyVisible() && IsUpdateMode() )
+        Invalidate();
+}
+
+void ThumbnailView::RemoveItem( sal_uInt16 nItemId )
+{
+    size_t nPos = GetItemPos( nItemId );
+
+    if ( nPos == THUMBNAILVIEW_ITEM_NOTFOUND )
+        return;
+
+    if ( nPos < mFilteredItemList.size() ) {
+
+        // keep it alive until after we have deleted it from the filter item list
+        std::unique_ptr<ThumbnailViewItem> xKeepAliveViewItem;
+
+        // delete item from the thumbnail list
+        for (auto it = mItemList.begin(); it != mItemList.end(); ++it)
+        {
+            if ((*it)->mnId == nItemId)
+            {
+                xKeepAliveViewItem = std::move(*it);
+                mItemList.erase(it);
+                break;
+            }
+        }
+
+        // delete item from the filter item list
+        ThumbnailValueItemList::iterator it = mFilteredItemList.begin();
+        ::std::advance( it, nPos );
+
+        if ((*it)->isSelected())
+        {
+            (*it)->setSelection(false);
+            maItemStateHdl.Call(*it);
+        }
+
+        mFilteredItemList.erase( it );
+        mpStartSelRange = mFilteredItemList.end();
+    }
+
+    CalculateItemPositions();
+
+    if ( IsReallyVisible() && IsUpdateMode() )
+        Invalidate();
+}
+
+void ThumbnailView::Clear()
+{
+    ImplDeleteItems();
+
+    // reset variables
+    mnFirstLine     = 0;
+
+    CalculateItemPositions();
+
+    if ( IsReallyVisible() && IsUpdateMode() )
+        Invalidate();
+}
+
+void ThumbnailView::updateItems (std::vector<std::unique_ptr<ThumbnailViewItem>> items)
+{
+    ImplDeleteItems();
+
+    // reset variables
+    mnFirstLine     = 0;
+
+    mItemList = std::move(items);
+
+    filterItems(maFilterFunc);
+}
+
+size_t ThumbnailView::GetItemPos( sal_uInt16 nItemId ) const
+{
+    for ( size_t i = 0, n = mFilteredItemList.size(); i < n; ++i ) {
+        if ( mFilteredItemList[i]->mnId == nItemId ) {
+            return i;
+        }
+    }
+    return THUMBNAILVIEW_ITEM_NOTFOUND;
+}
+
+sal_uInt16 ThumbnailView::GetItemId( size_t nPos ) const
+{
+    return ( nPos < mFilteredItemList.size() ) ? mFilteredItemList[nPos]->mnId : 0 ;
+}
+
+sal_uInt16 ThumbnailView::GetItemId( const Point& rPos ) const
+{
+    size_t nItemPos = ImplGetItem( rPos );
+    if ( nItemPos != THUMBNAILVIEW_ITEM_NOTFOUND )
+        return GetItemId( nItemPos );
+
+    return 0;
+}
+
+sal_uInt16 ThumbnailView::getNextItemId() const
+{
+    return mItemList.empty() ? 1 : mItemList.back()->mnId + 1;
+}
+
+void ThumbnailView::setItemMaxTextLength(sal_uInt32 nLength)
+{
+    mpItemAttrs->nMaxTextLength = nLength;
+}
+
+void ThumbnailView::setItemDimensions(tools::Long itemWidth, tools::Long thumbnailHeight, tools::Long displayHeight, int itemPadding)
+{
+    mnItemWidth = itemWidth + 2*itemPadding;
+    mnThumbnailHeight = thumbnailHeight;
+    mnDisplayHeight = displayHeight;
+    mnItemPadding = itemPadding;
+    mnItemHeight = mnDisplayHeight + mnThumbnailHeight + 2*itemPadding;
+}
+
+void ThumbnailView::SelectItem( sal_uInt16 nItemId )
+{
+    size_t nItemPos = GetItemPos( nItemId );
+    if ( nItemPos == THUMBNAILVIEW_ITEM_NOTFOUND )
+        return;
+
+    ThumbnailViewItem* pItem = mFilteredItemList[nItemPos];
+    if (pItem->isSelected())
+        return;
+
+    pItem->setSelection(true);
+    maItemStateHdl.Call(pItem);
+
+    if (IsReallyVisible() && IsUpdateMode())
+        Invalidate();
+
+    bool bNewOut = IsReallyVisible() && IsUpdateMode();
+
+    // if necessary scroll to the visible area
+    if (mbScroll && nItemId && mnCols)
+    {
+        sal_uInt16 nNewLine = static_cast<sal_uInt16>(nItemPos / mnCols);
+        if ( nNewLine < mnFirstLine )
+        {
+            mnFirstLine = nNewLine;
+        }
+        else if ( mnVisLines != 0 && nNewLine > o3tl::make_unsigned(mnFirstLine+mnVisLines-1) )
+        {
+            mnFirstLine = static_cast<sal_uInt16>(nNewLine-mnVisLines+1);
+        }
+    }
+
+    if ( bNewOut )
+    {
+        if ( IsReallyVisible() && IsUpdateMode() )
+            Invalidate();
+    }
+
+    if( !ImplHasAccessibleListeners() )
+        return;
+
+    // focus event (select)
+    ThumbnailViewItemAcc* pItemAcc = ThumbnailViewItemAcc::getImplementation( pItem->GetAccessible( false ) );
+
+    if( pItemAcc )
+    {
+        css::uno::Any aOldAny, aNewAny;
+        aNewAny <<= css::uno::Reference< css::uno::XInterface >(
+            static_cast< ::cppu::OWeakObject* >( pItemAcc ));
+        ImplFireAccessibleEvent( css::accessibility::AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, aOldAny, aNewAny );
+    }
+
+    // selection event
+    css::uno::Any aOldAny, aNewAny;
+    ImplFireAccessibleEvent( css::accessibility::AccessibleEventId::SELECTION_CHANGED, aOldAny, aNewAny );
+}
+
+bool ThumbnailView::IsItemSelected( sal_uInt16 nItemId ) const
+{
+    size_t nItemPos = GetItemPos( nItemId );
+    if ( nItemPos == THUMBNAILVIEW_ITEM_NOTFOUND )
+        return false;
+
+    ThumbnailViewItem* pItem = mFilteredItemList[nItemPos];
+    return pItem->isSelected();
+}
+
+void ThumbnailView::deselectItems()
+{
+    for (std::unique_ptr<ThumbnailViewItem>& p : mItemList)
+    {
+        if (p->isSelected())
+        {
+            p->setSelection(false);
+
+            maItemStateHdl.Call(p.get());
+        }
+    }
+
+    if (IsReallyVisible() && IsUpdateMode())
+        Invalidate();
+}
+
+void ThumbnailView::ShowTooltips( bool bShowTooltips )
+{
+    mbShowTooltips = bShowTooltips;
+}
+
+void ThumbnailView::DrawMnemonics( bool bDrawMnemonics )
+{
+    mbDrawMnemonics = bDrawMnemonics;
+}
+
+void ThumbnailView::filterItems(const std::function<bool (const ThumbnailViewItem*)> &func)
+{
+    mnFirstLine = 0;        // start at the top of the list instead of the current position
+    maFilterFunc = func;
+
+    size_t nSelPos = 0;
+    bool bHasSelRange = false;
+    ThumbnailViewItem *curSel = mpStartSelRange != mFilteredItemList.end() ? *mpStartSelRange : nullptr;
+
+    mFilteredItemList.clear();
+
+    for (size_t i = 0, n = mItemList.size(); i < n; ++i)
+    {
+        ThumbnailViewItem *const pItem = mItemList[i].get();
+
+        if (maFilterFunc(pItem))
+        {
+            if (curSel == pItem)
+            {
+                nSelPos = i;
+                bHasSelRange = true;
+            }
+
+            mFilteredItemList.push_back(pItem);
+        }
+        else
+        {
+            if( pItem->isVisible())
+            {
+                if ( ImplHasAccessibleListeners() )
+                {
+                    css::uno::Any aOldAny, aNewAny;
+
+                    aOldAny <<= pItem->GetAccessible( false );
+                    ImplFireAccessibleEvent( css::accessibility::AccessibleEventId::CHILD, aOldAny, aNewAny );
+                }
+
+                pItem->show(false);
+                pItem->setSelection(false);
+
+                maItemStateHdl.Call(pItem);
+            }
+        }
+    }
+
+    mpStartSelRange = bHasSelRange ? mFilteredItemList.begin()  + nSelPos : mFilteredItemList.end();
+    CalculateItemPositions();
+
+    Invalidate();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */