Quelle  animationnodehelper.hxx

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#pragma once

#include <o3tl/any.hxx>
#include <rtl/strbuf.hxx>
#include <sal/log.hxx>
#include <tools/helpers.hxx>

#include <com/sun/star/uno/Any.hxx>
#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/animations/XAnimate.hpp>
#include <com/sun/star/animations/XAnimationNode.hpp>
#include <com/sun/star/container/XEnumerationAccess.hpp>
#include <com/sun/star/container/XEnumeration.hpp>
#include <com/sun/star/presentation/ParagraphTarget.hpp>

#include <vector>

/* Declaration and definition of AnimationNode helper */

namespace anim
{
    // TODO(Q1): this could possibly be implemented with a somewhat
    // more lightweight template, by having the actual worker receive
    // only a function pointer, and a thin templated wrapper around
    // that which converts member functions into that.

    /** pushes the given node to the given vector and recursively calls itself for each child node.
    */
    inline void create_deep_vector( const css::uno::Reference< css::animations::XAnimationNode >& xNode,
                                std::vector< css::uno::Reference< css::animations::XAnimationNode > >& rVector )
    {
        rVector.push_back( xNode );

        try
        {
            // get an XEnumerationAccess to the children
            css::uno::Reference< css::container::XEnumerationAccess >
                  xEnumerationAccess( xNode, css::uno::UNO_QUERY );

            if( xEnumerationAccess.is() )
            {
                css::uno::Reference< css::container::XEnumeration >
                      xEnumeration = xEnumerationAccess->createEnumeration();

                if( xEnumeration.is() )
                {
                    while( xEnumeration->hasMoreElements() )
                    {
                        css::uno::Reference< css::animations::XAnimationNode >
                            xChildNode( xEnumeration->nextElement(),
                                        css::uno::UNO_QUERY_THROW );

                        create_deep_vector( xChildNode, rVector );
                    }
                }
            }
        }
        catch( css::uno::Exception& )
        {
        }
    }

    inline bool getVisibilityPropertyForAny(css::uno::Any const& rAny)
    {
        bool bVisible = false;
        css::uno::Any aAny(rAny);

        // try to extract bool value
        if (!(aAny >>= bVisible))
        {
            // try to extract string
            OUString aString;
            if (aAny >>= aString)
            {
                // we also take the strings "true" and "false",
                // as well as "on" and "off" here
                if (aString.equalsIgnoreAsciiCase("true") ||
                    aString.equalsIgnoreAsciiCase("on"))
                {
                    bVisible = true;
                }
                if (aString.equalsIgnoreAsciiCase("false") ||
                    aString.equalsIgnoreAsciiCase("off"))
                {
                    bVisible = false;
                }
            }
        }
        return bVisible;
    }

    inline bool getVisibilityProperty(
        const css::uno::Reference< css::animations::XAnimate >& xAnimateNode, bool& bReturn)
    {
        if (xAnimateNode->getAttributeName().equalsIgnoreAsciiCase("visibility"))
        {
            css::uno::Any aAny(xAnimateNode->getTo());
            bReturn = getVisibilityPropertyForAny(aAny);
            return true;
        }

        return false;
    }

    inline void convertTarget(OStringBuffer& aStringBuffer, const css::uno::Any& rTarget)
    {
        if (!rTarget.hasValue())
            return;

        css::uno::Reference<css::uno::XInterface> xRef;
        if (auto xParagraphTarget = o3tl::tryAccess<css::presentation::ParagraphTarget>(rTarget))
        {
            if (xParagraphTarget->Shape.is())
            {
                const std::string aIdentifier(GetInterfaceHash(xParagraphTarget->Shape));
                if (!aIdentifier.empty())
                {
                    sal_Int32 nParagraph(xParagraphTarget->Paragraph);
                    aStringBuffer.append(aIdentifier);
                    aStringBuffer.append("_");
                    aStringBuffer.append(nParagraph);
                }
            }
        }
        else
        {
            rTarget >>= xRef;
            SAL_WARN_IF(!xRef.is(), "animations", "convertTarget(), invalid target type!");
            if (xRef.is())
            {
                const std::string aIdentifier(GetInterfaceHash(xRef));
                if (!aIdentifier.empty())
                    aStringBuffer.append(aIdentifier);
            }
        }
    }
}

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