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| -rw-r--r-- | sfx2/source/control/thumbnailview.cxx | 1220 |
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: */ |