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| -rw-r--r-- | svx/source/table/accessiblecell.cxx | 609 |
1 files changed, 609 insertions, 0 deletions
diff --git a/svx/source/table/accessiblecell.cxx b/svx/source/table/accessiblecell.cxx new file mode 100644 index 000000000..9c4b68949 --- /dev/null +++ b/svx/source/table/accessiblecell.cxx @@ -0,0 +1,609 @@ +/* -*- 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 <sal/config.h> +#include <sal/log.hxx> + +#include <memory> + +#include "accessiblecell.hxx" +#include <cell.hxx> + +#include <com/sun/star/accessibility/AccessibleRole.hpp> +#include <com/sun/star/accessibility/AccessibleStateType.hpp> +#include <com/sun/star/accessibility/AccessibleEventId.hpp> + +#include <editeng/unoedsrc.hxx> +#include <vcl/svapp.hxx> + +#include <unotools/accessiblestatesethelper.hxx> +#include <comphelper/string.hxx> +#include <svx/IAccessibleViewForwarder.hxx> +#include <svx/unoshtxt.hxx> +#include <svx/svdotext.hxx> +#include <tools/debug.hxx> + +using namespace sdr::table; +using namespace ::com::sun::star; +using namespace ::com::sun::star::uno; +using namespace ::com::sun::star::accessibility; +using namespace ::com::sun::star::lang; +using namespace ::com::sun::star::container; + +namespace accessibility { + +AccessibleCell::AccessibleCell( const css::uno::Reference< css::accessibility::XAccessible>& rxParent, const sdr::table::CellRef& rCell, sal_Int32 nIndex, const AccessibleShapeTreeInfo& rShapeTreeInfo ) +: AccessibleCellBase( rxParent, AccessibleRole::TABLE_CELL ) +, maShapeTreeInfo( rShapeTreeInfo ) +, mnIndexInParent( nIndex ) +, mxCell( rCell ) +{ + //Init the pAccTable var + pAccTable = dynamic_cast <AccessibleTableShape *> (rxParent.get()); +} + + +AccessibleCell::~AccessibleCell() +{ + DBG_ASSERT( mpText == nullptr, "svx::AccessibleCell::~AccessibleCell(), not disposed!?" ); +} + + +void AccessibleCell::Init() +{ + SdrView* pView = maShapeTreeInfo.GetSdrView(); + const vcl::Window* pWindow = maShapeTreeInfo.GetWindow (); + if( (pView != nullptr) && (pWindow != nullptr) && mxCell.is()) + { + // create AccessibleTextHelper to handle this shape's text + if( mxCell->CanCreateEditOutlinerParaObject() || mxCell->GetOutlinerParaObject() != nullptr ) + { + // non-empty text -> use full-fledged edit source right away + + mpText.reset( new AccessibleTextHelper( std::make_unique<SvxTextEditSource>(mxCell->GetObject(), mxCell.get(), *pView, *pWindow) ) ); + if( mxCell.is() && mxCell->IsActiveCell() ) + mpText->SetFocus(); + mpText->SetEventSource(this); + } + } +} + + +bool AccessibleCell::SetState (sal_Int16 aState) +{ + bool bStateHasChanged = false; + + if (aState == AccessibleStateType::FOCUSED && mpText != nullptr) + { + // Offer FOCUSED state to edit engine and detect whether the state + // changes. + bool bIsFocused = mpText->HaveFocus (); + mpText->SetFocus(); + bStateHasChanged = (bIsFocused != mpText->HaveFocus ()); + } + else + bStateHasChanged = AccessibleContextBase::SetState (aState); + + return bStateHasChanged; +} + + +bool AccessibleCell::ResetState (sal_Int16 aState) +{ + bool bStateHasChanged = false; + + if (aState == AccessibleStateType::FOCUSED && mpText != nullptr) + { + // Try to remove FOCUSED state from the edit engine and detect + // whether the state changes. + bool bIsFocused = mpText->HaveFocus (); + mpText->SetFocus (false); + bStateHasChanged = (bIsFocused != mpText->HaveFocus ()); + } + else + bStateHasChanged = AccessibleContextBase::ResetState (aState); + + return bStateHasChanged; +} + + +// XInterface + + +Any SAL_CALL AccessibleCell::queryInterface( const Type& aType ) +{ + return AccessibleCellBase::queryInterface( aType ); +} + + +void SAL_CALL AccessibleCell::acquire( ) throw () +{ + AccessibleCellBase::acquire(); +} + + +void SAL_CALL AccessibleCell::release( ) throw () +{ + AccessibleCellBase::release(); +} + + +// XAccessibleContext + + +/** The children of this cell come from the paragraphs of text. +*/ +sal_Int32 SAL_CALL AccessibleCell::getAccessibleChildCount() +{ + SolarMutexGuard aSolarGuard; + ThrowIfDisposed (); + return mpText != nullptr ? mpText->GetChildCount () : 0; +} + + +/** Forward the request to the shape. Return the requested shape or throw + an exception for a wrong index. +*/ +Reference<XAccessible> SAL_CALL AccessibleCell::getAccessibleChild (sal_Int32 nIndex) +{ + SolarMutexGuard aSolarGuard; + ThrowIfDisposed (); + + // todo: does GetChild throw IndexOutOfBoundsException? + return mpText->GetChild (nIndex); +} + + +/** Return a copy of the state set. + Possible states are: + ENABLED + SHOWING + VISIBLE +*/ +Reference<XAccessibleStateSet> SAL_CALL AccessibleCell::getAccessibleStateSet() +{ + SolarMutexGuard aSolarGuard; + ::osl::MutexGuard aGuard (maMutex); + Reference<XAccessibleStateSet> xStateSet; + + if (rBHelper.bDisposed || mpText == nullptr) + { + // Return a minimal state set that only contains the DEFUNC state. + xStateSet = AccessibleContextBase::getAccessibleStateSet (); + } + else + { + ::utl::AccessibleStateSetHelper* pStateSet = static_cast< ::utl::AccessibleStateSetHelper*>(mxStateSet.get()); + + if(pStateSet) + { + // Merge current FOCUSED state from edit engine. + if (mpText != nullptr) + { + if (mpText->HaveFocus()) + pStateSet->AddState (AccessibleStateType::FOCUSED); + else + pStateSet->RemoveState (AccessibleStateType::FOCUSED); + } + // Set the invisible state for merged cell + if (mxCell.is() && mxCell->isMerged()) + pStateSet->RemoveState(AccessibleStateType::VISIBLE); + else + pStateSet->AddState(AccessibleStateType::VISIBLE); + + + //Just when the parent table is not read-only,set states EDITABLE,RESIZABLE,MOVEABLE + css::uno::Reference<XAccessible> xTempAcc = getAccessibleParent(); + if( xTempAcc.is() ) + { + css::uno::Reference<XAccessibleContext> + xTempAccContext = xTempAcc->getAccessibleContext(); + if( xTempAccContext.is() ) + { + css::uno::Reference<XAccessibleStateSet> rState = + xTempAccContext->getAccessibleStateSet(); + if( rState.is() ) + { + css::uno::Sequence<short> aStates = rState->getStates(); + if (std::find(aStates.begin(), aStates.end(), AccessibleStateType::EDITABLE) != aStates.end()) + { + pStateSet->AddState (AccessibleStateType::EDITABLE); + pStateSet->AddState (AccessibleStateType::RESIZABLE); + pStateSet->AddState (AccessibleStateType::MOVEABLE); + } + } + } + } + // Create a copy of the state set that may be modified by the + // caller without affecting the current state set. + xStateSet.set(new ::utl::AccessibleStateSetHelper (*pStateSet)); + } + } + + return xStateSet; +} + + +// XAccessibleComponent + + +sal_Bool SAL_CALL AccessibleCell::containsPoint( const css::awt::Point& aPoint) +{ + return AccessibleComponentBase::containsPoint( aPoint ); +} + +/** The implementation below is at the moment straightforward. It iterates + over all children (and thereby instances all children which have not + been already instantiated) until a child covering the specified point is + found. + This leaves room for improvement. For instance, first iterate only over + the already instantiated children and only if no match is found + instantiate the remaining ones. +*/ +Reference<XAccessible > SAL_CALL AccessibleCell::getAccessibleAtPoint ( const css::awt::Point& aPoint) +{ + SolarMutexGuard aSolarGuard; + ::osl::MutexGuard aGuard (maMutex); + + sal_Int32 nChildCount = getAccessibleChildCount (); + for (sal_Int32 i=0; i<nChildCount; ++i) + { + Reference<XAccessible> xChild (getAccessibleChild (i)); + if (xChild.is()) + { + Reference<XAccessibleComponent> xChildComponent (xChild->getAccessibleContext(), uno::UNO_QUERY); + if (xChildComponent.is()) + { + awt::Rectangle aBBox (xChildComponent->getBounds()); + if ( (aPoint.X >= aBBox.X) + && (aPoint.Y >= aBBox.Y) + && (aPoint.X < aBBox.X+aBBox.Width) + && (aPoint.Y < aBBox.Y+aBBox.Height) ) + return xChild; + } + } + } + + // Have not found a child under the given point. Returning empty + // reference to indicate this. + return uno::Reference<XAccessible>(); +} + + +css::awt::Rectangle SAL_CALL AccessibleCell::getBounds() +{ + SolarMutexGuard aSolarGuard; + ::osl::MutexGuard aGuard (maMutex); + + ThrowIfDisposed (); + css::awt::Rectangle aBoundingBox; + if( mxCell.is() ) + { + // Get the cell's bounding box in internal coordinates (in 100th of mm) + const ::tools::Rectangle aCellRect( mxCell->getCellRect() ); + + // Transform coordinates from internal to pixel. + if (maShapeTreeInfo.GetViewForwarder() == nullptr) + throw uno::RuntimeException ("AccessibleCell has no valid view forwarder",static_cast<uno::XWeak*>(this)); + + ::Size aPixelSize( maShapeTreeInfo.GetViewForwarder()->LogicToPixel(::Size(aCellRect.GetWidth(), aCellRect.GetHeight())) ); + ::Point aPixelPosition( maShapeTreeInfo.GetViewForwarder()->LogicToPixel( aCellRect.TopLeft() )); + + // Clip the shape's bounding box with the bounding box of its parent. + Reference<XAccessibleComponent> xParentComponent ( getAccessibleParent(), uno::UNO_QUERY); + if (xParentComponent.is()) + { + // Make the coordinates relative to the parent. + awt::Point aParentLocation (xParentComponent->getLocationOnScreen()); + int x = aPixelPosition.getX() - aParentLocation.X; + int y = aPixelPosition.getY() - aParentLocation.Y; + + // Clip with parent (with coordinates relative to itself). + ::tools::Rectangle aBBox ( x, y, x + aPixelSize.getWidth(), y + aPixelSize.getHeight()); + awt::Size aParentSize (xParentComponent->getSize()); + ::tools::Rectangle aParentBBox (0,0, aParentSize.Width, aParentSize.Height); + aBBox = aBBox.GetIntersection (aParentBBox); + aBoundingBox = awt::Rectangle ( aBBox.getX(), aBBox.getY(), aBBox.getWidth(), aBBox.getHeight()); + } + else + { + SAL_INFO("svx", "parent does not support component"); + aBoundingBox = awt::Rectangle (aPixelPosition.getX(), aPixelPosition.getY(),aPixelSize.getWidth(), aPixelSize.getHeight()); + } + } + + return aBoundingBox; +} + + +css::awt::Point SAL_CALL AccessibleCell::getLocation() +{ + ThrowIfDisposed (); + css::awt::Rectangle aBoundingBox(getBounds()); + return css::awt::Point(aBoundingBox.X, aBoundingBox.Y); +} + + +css::awt::Point SAL_CALL AccessibleCell::getLocationOnScreen() +{ + ThrowIfDisposed (); + + // Get relative position... + css::awt::Point aLocation(getLocation ()); + + // ... and add absolute position of the parent. + Reference<XAccessibleComponent> xParentComponent( getAccessibleParent(), uno::UNO_QUERY); + if(xParentComponent.is()) + { + css::awt::Point aParentLocation(xParentComponent->getLocationOnScreen()); + aLocation.X += aParentLocation.X; + aLocation.Y += aParentLocation.Y; + } + else + { + SAL_WARN("svx", "parent does not support XAccessibleComponent"); + } + + return aLocation; +} + + +awt::Size SAL_CALL AccessibleCell::getSize() +{ + ThrowIfDisposed (); + awt::Rectangle aBoundingBox (getBounds()); + return awt::Size (aBoundingBox.Width, aBoundingBox.Height); +} + + +void SAL_CALL AccessibleCell::grabFocus() +{ + AccessibleComponentBase::grabFocus(); +} + + +sal_Int32 SAL_CALL AccessibleCell::getForeground() +{ + ThrowIfDisposed (); + + // todo + return sal_Int32(0x0ffffffL); +} + + +sal_Int32 SAL_CALL AccessibleCell::getBackground() +{ + ThrowIfDisposed (); + + // todo + return 0; +} + + +// XAccessibleExtendedComponent + + +css::uno::Reference< css::awt::XFont > SAL_CALL AccessibleCell::getFont() +{ +//todo + return AccessibleComponentBase::getFont(); +} + + +OUString SAL_CALL AccessibleCell::getTitledBorderText() +{ + return AccessibleComponentBase::getTitledBorderText(); +} + + +OUString SAL_CALL AccessibleCell::getToolTipText() +{ + return AccessibleComponentBase::getToolTipText(); +} + + +// XAccessibleEventBroadcaster + + +void SAL_CALL AccessibleCell::addAccessibleEventListener( const Reference<XAccessibleEventListener >& rxListener) +{ + SolarMutexGuard aSolarGuard; + ::osl::MutexGuard aGuard (maMutex); + if (rBHelper.bDisposed || rBHelper.bInDispose) + { + Reference<XInterface> xSource( static_cast<XComponent *>(this) ); + lang::EventObject aEventObj(xSource); + rxListener->disposing(aEventObj); + } + else + { + AccessibleContextBase::addAccessibleEventListener (rxListener); + if (mpText != nullptr) + mpText->AddEventListener (rxListener); + } +} + + +void SAL_CALL AccessibleCell::removeAccessibleEventListener( const Reference<XAccessibleEventListener >& rxListener) +{ + SolarMutexGuard aSolarGuard; + AccessibleContextBase::removeAccessibleEventListener(rxListener); + if (mpText != nullptr) + mpText->RemoveEventListener (rxListener); +} + + +// XServiceInfo + + +OUString SAL_CALL AccessibleCell::getImplementationName() +{ + return "AccessibleCell"; +} + + +Sequence<OUString> SAL_CALL AccessibleCell::getSupportedServiceNames() +{ + ThrowIfDisposed (); + + // Get list of supported service names from base class... + uno::Sequence<OUString> aServiceNames = AccessibleContextBase::getSupportedServiceNames(); + sal_Int32 nCount (aServiceNames.getLength()); + + // ...and add additional names. + aServiceNames.realloc (nCount + 1); + aServiceNames[nCount] = "com.sun.star.drawing.AccessibleCell"; + + return aServiceNames; +} + + +// IAccessibleViewForwarderListener + + +void AccessibleCell::ViewForwarderChanged() +{ + // Inform all listeners that the graphical representation (i.e. size + // and/or position) of the shape has changed. + CommitChange(AccessibleEventId::VISIBLE_DATA_CHANGED, Any(), Any()); + + // update our children that our screen position might have changed + if( mpText ) + mpText->UpdateChildren(); +} + + +// protected + + +void AccessibleCell::disposing() +{ + SolarMutexGuard aSolarGuard; + ::osl::MutexGuard aGuard (maMutex); + + // Make sure to send an event that this object loses the focus in the + // case that it has the focus. + ::utl::AccessibleStateSetHelper* pStateSet = static_cast< ::utl::AccessibleStateSetHelper*>(mxStateSet.get()); + if (pStateSet != nullptr) + pStateSet->RemoveState(AccessibleStateType::FOCUSED); + + if (mpText != nullptr) + { + mpText->Dispose(); + mpText.reset(); + } + + // Cleanup. Remove references to objects to allow them to be + // destroyed. + mxCell.clear(); + maShapeTreeInfo.dispose(); + + // Call base classes. + AccessibleContextBase::dispose (); +} + +sal_Int32 SAL_CALL AccessibleCell::getAccessibleIndexInParent() +{ + ThrowIfDisposed (); + return mnIndexInParent; +} + + +OUString AccessibleCell::getCellName( sal_Int32 nCol, sal_Int32 nRow ) +{ + OUStringBuffer aBuf; + + if (nCol < 26*26) + { + if (nCol < 26) + aBuf.append( static_cast<sal_Unicode>( 'A' + + static_cast<sal_uInt16>(nCol))); + else + { + aBuf.append( static_cast<sal_Unicode>( 'A' + + (static_cast<sal_uInt16>(nCol) / 26) - 1)); + aBuf.append( static_cast<sal_Unicode>( 'A' + + (static_cast<sal_uInt16>(nCol) % 26))); + } + } + else + { + OUStringBuffer aStr; + while (nCol >= 26) + { + sal_Int32 nC = nCol % 26; + aStr.append(static_cast<sal_Unicode>( 'A' + + static_cast<sal_uInt16>(nC))); + nCol = nCol - nC; + nCol = nCol / 26 - 1; + } + aStr.append(static_cast<sal_Unicode>( 'A' + + static_cast<sal_uInt16>(nCol))); + aBuf.append(comphelper::string::reverseString(aStr.makeStringAndClear())); + } + aBuf.append( OUString::number(nRow+1) ); + return aBuf.makeStringAndClear(); +} + +OUString SAL_CALL AccessibleCell::getAccessibleName() +{ + ThrowIfDisposed (); + SolarMutexGuard aSolarGuard; + + if( pAccTable ) + { + try + { + sal_Int32 nRow = 0, nCol = 0; + pAccTable->getColumnAndRow(mnIndexInParent, nCol, nRow); + return getCellName( nCol, nRow ); + } + catch(const Exception&) + { + } + } + + return AccessibleCellBase::getAccessibleName(); +} + +void AccessibleCell::UpdateChildren() +{ + if (mpText) + mpText->UpdateChildren(); +} + +/* MT: Above getAccessibleName was introduced with IA2 CWS, while below was introduce in 3.3 meanwhile. Check which one is correct ++If this is correct, we also don't need sdr::table::CellRef getCellRef(), UpdateChildren(), getCellName( sal_Int32 nCol, sal_Int32 nRow ) above ++ + +OUString SAL_CALL AccessibleCell::getAccessibleName() throw (css::uno::RuntimeException) +{ + ThrowIfDisposed (); + SolarMutexGuard aSolarGuard; + + if( mxCell.is() ) + return mxCell->getName(); + + return AccessibleCellBase::getAccessibleName(); +} +*/ + +} // end of namespace accessibility + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |