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Diffstat (limited to 'chart2/source/controller/accessibility/AccessibleChartView.cxx')
| -rw-r--r-- | chart2/source/controller/accessibility/AccessibleChartView.cxx | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/chart2/source/controller/accessibility/AccessibleChartView.cxx b/chart2/source/controller/accessibility/AccessibleChartView.cxx new file mode 100644 index 000000000..6f9dad562 --- /dev/null +++ b/chart2/source/controller/accessibility/AccessibleChartView.cxx @@ -0,0 +1,358 @@ +/* -*- 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 <AccessibleChartView.hxx> +#include <chartview/ExplicitValueProvider.hxx> +#include <ObjectHierarchy.hxx> +#include <ObjectIdentifier.hxx> +#include <ResId.hxx> +#include <strings.hrc> +#include "AccessibleViewForwarder.hxx" +#include <ChartModel.hxx> + +#include <com/sun/star/accessibility/AccessibleStateType.hpp> +#include <com/sun/star/accessibility/AccessibleRole.hpp> +#include <com/sun/star/view/XSelectionSupplier.hpp> + +#include <comphelper/servicehelper.hxx> + +#include <rtl/ustring.hxx> +#include <vcl/window.hxx> +#include <toolkit/helper/vclunohelper.hxx> +#include <vcl/svapp.hxx> +#include <osl/mutex.hxx> + +using namespace ::com::sun::star; +using namespace ::com::sun::star::accessibility; + +using ::com::sun::star::uno::Sequence; +using ::com::sun::star::uno::Reference; +using ::com::sun::star::uno::WeakReference; +using ::com::sun::star::uno::Any; +using osl::MutexGuard; + +namespace chart +{ + +AccessibleChartView::AccessibleChartView(SdrView* pView ) : + impl::AccessibleChartView_Base( + AccessibleElementInfo(), // empty for now + true, // has children + true // always transparent + ), + m_pSdrView( pView ) +{ + AddState( AccessibleStateType::OPAQUE ); +} + +AccessibleChartView::~AccessibleChartView() +{ +} + +awt::Rectangle AccessibleChartView::GetWindowPosSize() const +{ + Reference< awt::XWindow > xWindow( GetInfo().m_xWindow ); + if( ! xWindow.is()) + return awt::Rectangle(); + + awt::Rectangle aBBox( xWindow->getPosSize() ); + + VclPtr<vcl::Window> pWindow( VCLUnoHelper::GetWindow( GetInfo().m_xWindow )); + if( pWindow ) + { + SolarMutexGuard aSolarGuard; + Point aVCLPoint( pWindow->OutputToAbsoluteScreenPixel( Point( 0, 0 ) )); + aBBox.X = aVCLPoint.getX(); + aBBox.Y = aVCLPoint.getY(); + } + + return aBBox; +} + +awt::Point AccessibleChartView::GetUpperLeftOnScreen() const +{ + awt::Point aParentPosition; + + awt::Rectangle aBBox( GetWindowPosSize() ); + aParentPosition.X = aBBox.X; + aParentPosition.Y = aBBox.Y; + + return aParentPosition; +} + +// ________ XAccessibleContext ________ +OUString SAL_CALL AccessibleChartView::getAccessibleName() +{ + return SchResId(STR_OBJECT_DIAGRAM); +} + +OUString SAL_CALL AccessibleChartView::getAccessibleDescription() +{ + return getAccessibleName(); +} + +Reference< XAccessible > SAL_CALL AccessibleChartView::getAccessibleParent() +{ + return Reference< XAccessible >( m_xParent ); +} + +sal_Int32 SAL_CALL AccessibleChartView::getAccessibleIndexInParent() +{ + // the document is always the only child of the window + return 0; +} + +sal_Int16 SAL_CALL AccessibleChartView::getAccessibleRole() +{ + return AccessibleRole::DOCUMENT; +} + +// ________ XAccessibleComponent ________ +awt::Rectangle SAL_CALL AccessibleChartView::getBounds() +{ + awt::Rectangle aResult( GetWindowPosSize()); + Reference< XAccessible > xParent( m_xParent ); + if( xParent.is()) + { + Reference< XAccessibleComponent > xContext( xParent->getAccessibleContext(), uno::UNO_QUERY ); + if( xContext.is()) + { + awt::Point aParentPosition = xContext->getLocationOnScreen(); + aResult.X -= aParentPosition.X; + aResult.Y -= aParentPosition.Y; + } + } + return aResult; +} + +awt::Point SAL_CALL AccessibleChartView::getLocationOnScreen() +{ + awt::Rectangle aBounds( getBounds()); + awt::Point aResult; + Reference< XAccessible > xParent( m_xParent ); + if( xParent.is()) + { + Reference< XAccessibleComponent > xAccComp( + xParent->getAccessibleContext(), uno::UNO_QUERY ); + aResult = xAccComp->getLocationOnScreen(); + aResult.X += aBounds.X; + aResult.Y += aBounds.Y; + } + return aResult; +} + +// lang::XInitialization + +void SAL_CALL AccessibleChartView::initialize( const Sequence< Any >& rArguments ) +{ + //0: view::XSelectionSupplier offers notifications for selection changes and access to the selection itself + //1: frame::XModel representing the chart model - offers access to object data + //2: lang::XInterface representing the normal chart view - offers access to some extra object data + + //all arguments are only valid until next initialization + bool bChanged = false; + bool bOldInvalid = false; + bool bNewInvalid = false; + + Reference< view::XSelectionSupplier > xSelectionSupplier; + rtl::Reference<::chart::ChartModel> xChartModel; + Reference< uno::XInterface > xChartView; + Reference< XAccessible > xParent; + Reference< awt::XWindow > xWindow; + { + MutexGuard aGuard( m_aMutex); + xSelectionSupplier.set( m_xSelectionSupplier ); + xChartModel = m_xChartModel; + xChartView.set( m_xChartView ); + xParent.set( m_xParent ); + xWindow.set( m_xWindow ); + } + + if( !xSelectionSupplier.is() || !xChartModel.is() || !xChartView.is() ) + { + bOldInvalid = true; + } + + if( rArguments.getLength() > 1 ) + { + Reference< frame::XModel > xNewChartModel; + rArguments[1] >>= xNewChartModel; + assert(!xNewChartModel || dynamic_cast<::chart::ChartModel*>(xNewChartModel.get())); + ::chart::ChartModel* pNewChartModel = dynamic_cast<::chart::ChartModel*>(xNewChartModel.get()); + if( pNewChartModel != xChartModel.get() ) + { + xChartModel = pNewChartModel; + bChanged = true; + } + } + else if( xChartModel.is() ) + { + bChanged = true; + xChartModel = nullptr; + } + + if( rArguments.getLength() > 2 ) + { + Reference< uno::XInterface > xNewChartView; + rArguments[2] >>= xNewChartView; + if( xNewChartView != xChartView ) + { + xChartView = xNewChartView; + bChanged = true; + } + } + else if( xChartView.is() ) + { + bChanged = true; + xChartView = nullptr; + } + + if( rArguments.getLength() > 3 ) + { + Reference< XAccessible > xNewParent; + rArguments[3] >>= xNewParent; + if( xNewParent != xParent ) + { + xParent = xNewParent; + bChanged = true; + } + } + + if( rArguments.getLength() > 4 ) + { + Reference< awt::XWindow > xNewWindow; + rArguments[4] >>= xNewWindow; + if( xNewWindow != xWindow ) + { + xWindow.set( xNewWindow ); + bChanged = true; + } + } + + if( rArguments.hasElements() && xChartModel.is() && xChartView.is() ) + { + Reference< view::XSelectionSupplier > xNewSelectionSupplier; + rArguments[0] >>= xNewSelectionSupplier; + if(xSelectionSupplier!=xNewSelectionSupplier) + { + bChanged = true; + if(xSelectionSupplier.is()) + xSelectionSupplier->removeSelectionChangeListener(this); + if(xNewSelectionSupplier.is()) + xNewSelectionSupplier->addSelectionChangeListener(this); + xSelectionSupplier = xNewSelectionSupplier; + } + } + else if( xSelectionSupplier.is() ) + { + bChanged = true; + xSelectionSupplier->removeSelectionChangeListener(this); + xSelectionSupplier = nullptr; + } + + if( !xSelectionSupplier.is() || !xChartModel.is() || !xChartView.is() ) + { + if(xSelectionSupplier.is()) + xSelectionSupplier->removeSelectionChangeListener(this); + xSelectionSupplier = nullptr; + xChartModel.clear(); + xChartView.clear(); + xParent.clear(); + xWindow.clear(); + + bNewInvalid = true; + } + + { + MutexGuard aGuard( m_aMutex); + m_xSelectionSupplier = WeakReference< view::XSelectionSupplier >(xSelectionSupplier); + m_xChartModel = xChartModel.get(); + m_xChartView = WeakReference< uno::XInterface >(xChartView); + m_xParent = WeakReference< XAccessible >(xParent); + m_xWindow = WeakReference< awt::XWindow >(xWindow); + } + + if( bOldInvalid && bNewInvalid ) + bChanged = false; + + if( !bChanged ) + return; + + { + //before notification we prepare for creation of new context + //the old context will be deleted after notification than + MutexGuard aGuard( m_aMutex); + if( xChartModel.is()) + m_spObjectHierarchy = + std::make_shared<ObjectHierarchy>( xChartModel, comphelper::getFromUnoTunnel<ExplicitValueProvider>(m_xChartView) ); + else + m_spObjectHierarchy.reset(); + } + + { + AccessibleElementInfo aAccInfo; + aAccInfo.m_aOID = ObjectIdentifier("ROOT"); + aAccInfo.m_xChartDocument = m_xChartModel; + aAccInfo.m_xSelectionSupplier = m_xSelectionSupplier; + aAccInfo.m_xView = m_xChartView; + aAccInfo.m_xWindow = m_xWindow; + aAccInfo.m_pParent = nullptr; + aAccInfo.m_spObjectHierarchy = m_spObjectHierarchy; + aAccInfo.m_pSdrView = m_pSdrView; + VclPtr<vcl::Window> pWindow = VCLUnoHelper::GetWindow( m_xWindow ); + m_pViewForwarder.reset( new AccessibleViewForwarder( this, pWindow ) ); + aAccInfo.m_pViewForwarder = m_pViewForwarder.get(); + // broadcasts an INVALIDATE_ALL_CHILDREN event globally + SetInfo( aAccInfo ); + } +} + +// view::XSelectionChangeListener + +void SAL_CALL AccessibleChartView::selectionChanged( const lang::EventObject& /*rEvent*/ ) +{ + Reference< view::XSelectionSupplier > xSelectionSupplier; + { + MutexGuard aGuard( m_aMutex); + xSelectionSupplier.set(m_xSelectionSupplier); + } + + if( !xSelectionSupplier.is() ) + return; + + ObjectIdentifier aSelectedOID( xSelectionSupplier->getSelection() ); + if ( m_aCurrentSelectionOID.isValid() ) + { + NotifyEvent( EventType::LOST_SELECTION, m_aCurrentSelectionOID ); + } + if( aSelectedOID.isValid() ) + { + NotifyEvent( EventType::GOT_SELECTION, aSelectedOID ); + } + m_aCurrentSelectionOID = aSelectedOID; +} + +// XEventListener +void SAL_CALL AccessibleChartView::disposing( const lang::EventObject& /*Source*/ ) +{ +} + +} //namespace chart + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |