AccessiblePageShape.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#include <AccessiblePageShape.hxx>
#include <svx/AccessibleShapeInfo.hxx>
#include <svx/IAccessibleViewForwarder.hxx>
#include <comphelper/diagnose_ex.hxx>
#include <tools/gen.hxx>
#include <sal/log.hxx>
 
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/drawing/XMasterPageTarget.hpp>
#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
#include <utility>
 
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::accessibility;
using ::com::sun::star::uno::Reference;
 
namespace accessibility {
 
//=====  internal  ============================================================
 
AccessiblePageShape::AccessiblePageShape (
    uno::Reference<drawing::XDrawPage> xPage,
    const uno::Reference<XAccessible>& rxParent,
    const AccessibleShapeTreeInfo& rShapeTreeInfo)
    : AccessibleShape (AccessibleShapeInfo (nullptr, rxParent), rShapeTreeInfo),
      mxPage (std::move(xPage))
{
    // The main part of the initialization is done in the init method which
    // has to be called from this constructor's caller.
}
 
AccessiblePageShape::~AccessiblePageShape()
{
}
 
//=====  XAccessibleContext  ==================================================
 
sal_Int64 SAL_CALL
       AccessiblePageShape::getAccessibleChildCount()
{
    return 0;
}
 
uno::Reference<XAccessible> SAL_CALL
    AccessiblePageShape::getAccessibleChild( sal_Int64 )
{
    throw lang::IndexOutOfBoundsException ("page shape has no children",
        static_cast<uno::XWeak*>(this));
}
 
//=====  XAccessibleComponent  ================================================
 
awt::Rectangle SAL_CALL AccessiblePageShape::getBounds()
{
    ThrowIfDisposed ();
 
    awt::Rectangle aBoundingBox;
 
    if (maShapeTreeInfo.GetViewForwarder() != nullptr)
    {
        uno::Reference<beans::XPropertySet> xSet (mxPage, uno::UNO_QUERY);
        if (xSet.is())
        {
            uno::Any aValue;
 
            aValue = xSet->getPropertyValue ("BorderLeft");
            aValue >>= aBoundingBox.X;
            aValue = xSet->getPropertyValue ("BorderTop");
            aValue >>= aBoundingBox.Y;
 
            aValue = xSet->getPropertyValue ("Width");
            aValue >>= aBoundingBox.Width;
            aValue = xSet->getPropertyValue ("Height");
            aValue >>= aBoundingBox.Height;
        }
 
        // Transform coordinates from internal to pixel.
        ::Size aPixelSize = maShapeTreeInfo.GetViewForwarder()->LogicToPixel (
            ::Size (aBoundingBox.Width, aBoundingBox.Height));
        ::Point aPixelPosition = maShapeTreeInfo.GetViewForwarder()->LogicToPixel (
            ::Point (aBoundingBox.X, aBoundingBox.Y));
 
        // 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.Left(),
                aBBox.Top(),
                aBBox.getOpenWidth(),
                aBBox.getOpenHeight());
        }
        else
            aBoundingBox = awt::Rectangle (
                aPixelPosition.getX(), aPixelPosition.getY(),
                aPixelSize.getWidth(), aPixelSize.getHeight());
    }
 
    return aBoundingBox;
}
 
sal_Int32 SAL_CALL AccessiblePageShape::getForeground()
{
    ThrowIfDisposed ();
    sal_Int32 nColor (0x0ffffffL);
 
    try
    {
        uno::Reference<beans::XPropertySet> aSet (mxPage, uno::UNO_QUERY);
        if (aSet.is())
        {
            uno::Any aColor = aSet->getPropertyValue ("LineColor");
            aColor >>= nColor;
        }
    }
    catch (const css::beans::UnknownPropertyException&)
    {
        // Ignore exception and return default color.
    }
    return nColor;
}
 
sal_Int32 SAL_CALL AccessiblePageShape::getBackground()
{
    ThrowIfDisposed ();
    sal_Int32 nColor (0x01020ffL);
 
    try
    {
        uno::Reference<beans::XPropertySet> xSet (mxPage, uno::UNO_QUERY);
        if (xSet.is())
        {
            uno::Any aBGSet = xSet->getPropertyValue ("Background");
            Reference<beans::XPropertySet> xBGSet (aBGSet, uno::UNO_QUERY);
            if ( ! xBGSet.is())
            {
                // Draw page has no Background property.  Try the master
                // page instead.
                Reference<drawing::XMasterPageTarget> xTarget (mxPage, uno::UNO_QUERY);
                if (xTarget.is())
                {
                    xSet.set(xTarget->getMasterPage(), uno::UNO_QUERY);
                    aBGSet = xSet->getPropertyValue ("Background");
                    xBGSet.set(aBGSet, uno::UNO_QUERY);
                }
            }
            // Fetch the fill color.  Has to be extended to cope with
            // gradients, hashes, and bitmaps.
            if (xBGSet.is())
            {
                uno::Any aColor = xBGSet->getPropertyValue ("FillColor");
                aColor >>= nColor;
            }
            else
                SAL_WARN("sd", "no Background property in page");
        }
    }
    catch (const css::beans::UnknownPropertyException&)
    {
        TOOLS_WARN_EXCEPTION("sd", "caught exception due to unknown property");
        // Ignore exception and return default color.
    }
    return nColor;
}
 
// XServiceInfo
 
OUString SAL_CALL
    AccessiblePageShape::getImplementationName()
{
    ThrowIfDisposed ();
    return "AccessiblePageShape";
}
 
css::uno::Sequence< OUString> SAL_CALL
    AccessiblePageShape::getSupportedServiceNames()
{
    ThrowIfDisposed ();
    return AccessibleShape::getSupportedServiceNames();
}
 
//=====  XComponent  ==========================================================
 
void AccessiblePageShape::dispose()
{
    // Cleanup.
    mxShape = nullptr;
 
    // Call base classes.
    AccessibleContextBase::dispose ();
}
 
//=====  protected internal  ==================================================
 
OUString
    AccessiblePageShape::CreateAccessibleBaseName()
{
    return "PageShape";
}
 
OUString
    AccessiblePageShape::CreateAccessibleName()
{
    Reference<beans::XPropertySet> xPageProperties (mxPage, UNO_QUERY);
 
    // Get name of the current slide.
    OUString sCurrentSlideName;
    try
    {
        if (xPageProperties.is())
        {
            xPageProperties->getPropertyValue( "LinkDisplayName" ) >>= sCurrentSlideName;
        }
    }
    catch (const beans::UnknownPropertyException&)
    {
    }
 
    return CreateAccessibleBaseName()+": "+sCurrentSlideName;
}
 
} // end of namespace accessibility
 
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