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Diffstat (limited to 'sc/source/ui/Accessibility/AccessiblePreviewCell.cxx')
| -rw-r--r-- | sc/source/ui/Accessibility/AccessiblePreviewCell.cxx | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/sc/source/ui/Accessibility/AccessiblePreviewCell.cxx b/sc/source/ui/Accessibility/AccessiblePreviewCell.cxx new file mode 100644 index 000000000..f3bc3e717 --- /dev/null +++ b/sc/source/ui/Accessibility/AccessiblePreviewCell.cxx @@ -0,0 +1,277 @@ +/* -*- 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 <scitems.hxx> +#include <tools/gen.hxx> +#include <AccessibleText.hxx> +#include <editsrc.hxx> +#include <AccessiblePreviewCell.hxx> +#include <prevwsh.hxx> +#include <prevloc.hxx> +#include <document.hxx> +#include <svx/AccessibleTextHelper.hxx> +#include <unotools/accessiblestatesethelper.hxx> +#include <editeng/brushitem.hxx> +#include <vcl/window.hxx> +#include <vcl/svapp.hxx> +#include <toolkit/helper/convert.hxx> +#include <com/sun/star/accessibility/AccessibleStateType.hpp> +#include <comphelper/sequence.hxx> + +using namespace ::com::sun::star; +using namespace ::com::sun::star::accessibility; + +//===== internal ============================================================ + +ScAccessiblePreviewCell::ScAccessiblePreviewCell( const css::uno::Reference<css::accessibility::XAccessible>& rxParent, + ScPreviewShell* pViewShell, + const ScAddress& rCellAddress, + sal_Int32 nIndex ) : + ScAccessibleCellBase( rxParent, ( pViewShell ? &pViewShell->GetDocument() : nullptr ), rCellAddress, nIndex ), + mpViewShell( pViewShell ) +{ + if (mpViewShell) + mpViewShell->AddAccessibilityObject(*this); +} + +ScAccessiblePreviewCell::~ScAccessiblePreviewCell() +{ + if (!ScAccessibleContextBase::IsDefunc() && !rBHelper.bInDispose) + { + // increment refcount to prevent double call off dtor + osl_atomic_increment( &m_refCount ); + // call dispose to inform object which have a weak reference to this object + dispose(); + } +} + +void SAL_CALL ScAccessiblePreviewCell::disposing() +{ + SolarMutexGuard aGuard; + if (mpViewShell) + { + mpViewShell->RemoveAccessibilityObject(*this); + mpViewShell = nullptr; + } + + mpTextHelper.reset(); + + ScAccessibleCellBase::disposing(); +} + +void ScAccessiblePreviewCell::Notify( SfxBroadcaster& rBC, const SfxHint& rHint ) +{ + if (rHint.GetId() == SfxHintId::ScAccVisAreaChanged) + { + if (mpTextHelper) + mpTextHelper->UpdateChildren(); + } + + ScAccessibleContextBase::Notify(rBC, rHint); +} + +//===== XAccessibleComponent ============================================ + +uno::Reference< XAccessible > SAL_CALL ScAccessiblePreviewCell::getAccessibleAtPoint( const awt::Point& rPoint ) +{ + uno::Reference<XAccessible> xRet; + if (containsPoint(rPoint)) + { + SolarMutexGuard aGuard; + IsObjectValid(); + + if(!mpTextHelper) + CreateTextHelper(); + + xRet = mpTextHelper->GetAt(rPoint); + } + + return xRet; +} + +void SAL_CALL ScAccessiblePreviewCell::grabFocus() +{ + SolarMutexGuard aGuard; + IsObjectValid(); + if (getAccessibleParent().is()) + { + uno::Reference<XAccessibleComponent> xAccessibleComponent(getAccessibleParent()->getAccessibleContext(), uno::UNO_QUERY); + if (xAccessibleComponent.is()) + xAccessibleComponent->grabFocus(); + } +} + +//===== XAccessibleContext ============================================== + +sal_Int32 SAL_CALL ScAccessiblePreviewCell::getAccessibleChildCount() +{ + SolarMutexGuard aGuard; + IsObjectValid(); + if (!mpTextHelper) + CreateTextHelper(); + return mpTextHelper->GetChildCount(); +} + +uno::Reference< XAccessible > SAL_CALL ScAccessiblePreviewCell::getAccessibleChild(sal_Int32 nIndex) +{ + SolarMutexGuard aGuard; + IsObjectValid(); + if (!mpTextHelper) + CreateTextHelper(); + return mpTextHelper->GetChild(nIndex); +} + +uno::Reference<XAccessibleStateSet> SAL_CALL ScAccessiblePreviewCell::getAccessibleStateSet() +{ + SolarMutexGuard aGuard; + + uno::Reference<XAccessibleStateSet> xParentStates; + if (getAccessibleParent().is()) + { + uno::Reference<XAccessibleContext> xParentContext = getAccessibleParent()->getAccessibleContext(); + xParentStates = xParentContext->getAccessibleStateSet(); + } + rtl::Reference<utl::AccessibleStateSetHelper> pStateSet = new utl::AccessibleStateSetHelper(); + if (IsDefunc(xParentStates)) + pStateSet->AddState(AccessibleStateType::DEFUNC); + else + { + pStateSet->AddState(AccessibleStateType::ENABLED); + pStateSet->AddState(AccessibleStateType::MULTI_LINE); + if (IsOpaque()) + pStateSet->AddState(AccessibleStateType::OPAQUE); + if (isShowing()) + pStateSet->AddState(AccessibleStateType::SHOWING); + pStateSet->AddState(AccessibleStateType::TRANSIENT); + if (isVisible()) + pStateSet->AddState(AccessibleStateType::VISIBLE); + // MANAGES_DESCENDANTS (for paragraphs) + pStateSet->AddState(AccessibleStateType::MANAGES_DESCENDANTS); + } + return pStateSet; +} + +//===== XServiceInfo ==================================================== + +OUString SAL_CALL ScAccessiblePreviewCell::getImplementationName() +{ + return "ScAccessiblePreviewCell"; +} + +uno::Sequence<OUString> SAL_CALL ScAccessiblePreviewCell::getSupportedServiceNames() +{ + const css::uno::Sequence<OUString> vals { "com.sun.star.table.AccessibleCellView" }; + return comphelper::concatSequences(ScAccessibleContextBase::getSupportedServiceNames(), vals); +} + +//===== XTypeProvider ======================================================= + +uno::Sequence<sal_Int8> SAL_CALL + ScAccessiblePreviewCell::getImplementationId() +{ + return css::uno::Sequence<sal_Int8>(); +} + +//==== internal ========================================================= + +tools::Rectangle ScAccessiblePreviewCell::GetBoundingBoxOnScreen() const +{ + tools::Rectangle aCellRect; + if (mpViewShell) + { + mpViewShell->GetLocationData().GetCellPosition( maCellAddress, aCellRect ); + vcl::Window* pWindow = mpViewShell->GetWindow(); + if (pWindow) + { + tools::Rectangle aRect = pWindow->GetWindowExtentsRelative(nullptr); + aCellRect.Move(aRect.Left(), aRect.Top()); + } + } + return aCellRect; +} + +tools::Rectangle ScAccessiblePreviewCell::GetBoundingBox() const +{ + tools::Rectangle aCellRect; + if (mpViewShell) + { + mpViewShell->GetLocationData().GetCellPosition( maCellAddress, aCellRect ); + uno::Reference<XAccessible> xAccParent = const_cast<ScAccessiblePreviewCell*>(this)->getAccessibleParent(); + if (xAccParent.is()) + { + uno::Reference<XAccessibleContext> xAccParentContext = xAccParent->getAccessibleContext(); + uno::Reference<XAccessibleComponent> xAccParentComp (xAccParentContext, uno::UNO_QUERY); + if (xAccParentComp.is()) + { + tools::Rectangle aParentRect (VCLRectangle(xAccParentComp->getBounds())); + aCellRect.Move(-aParentRect.Left(), -aParentRect.Top()); + } + } + } + return aCellRect; +} + +bool ScAccessiblePreviewCell::IsDefunc( + const uno::Reference<XAccessibleStateSet>& rxParentStates) +{ + return ScAccessibleContextBase::IsDefunc() || (mpDoc == nullptr) || (mpViewShell == nullptr) || !getAccessibleParent().is() || + (rxParentStates.is() && rxParentStates->contains(AccessibleStateType::DEFUNC)); +} + +bool ScAccessiblePreviewCell::IsEditable( + const uno::Reference<XAccessibleStateSet>& /* rxParentStates */) +{ + return false; +} + +bool ScAccessiblePreviewCell::IsOpaque() const +{ + // test whether there is a background color + //! could be moved to ScAccessibleCellBase + + bool bOpaque(true); + if (mpDoc) + { + const SvxBrushItem* pItem = mpDoc->GetAttr(maCellAddress, ATTR_BACKGROUND); + if (pItem) + bOpaque = pItem->GetColor() != COL_TRANSPARENT; + } + return bOpaque; +} + +void ScAccessiblePreviewCell::CreateTextHelper() +{ + if (mpTextHelper) + return; + + mpTextHelper.reset( new ::accessibility::AccessibleTextHelper( + std::make_unique<ScAccessibilityEditSource>( + std::make_unique<ScAccessiblePreviewCellTextData>( + mpViewShell, maCellAddress))) ); + mpTextHelper->SetEventSource( this ); + + // paragraphs in preview are transient + ::accessibility::AccessibleTextHelper::VectorOfStates aChildStates; + aChildStates.push_back( AccessibleStateType::TRANSIENT ); + mpTextHelper->SetAdditionalChildStates( std::move(aChildStates) ); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |