Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 491 insertions, 0 deletions

diff --git a/canvas/source/factory/canvasfactory.component b/canvas/source/factory/canvasfactory.component
new file mode 100644
index 000000000..3f9cabf71
--- /dev/null
+++ b/canvas/source/factory/canvasfactory.component
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ * 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 .
+ -->
+
+<component loader="com.sun.star.loader.SharedLibrary" environment="@CPPU_ENV@"
+    xmlns="http://openoffice.org/2010/uno-components">
+  <implementation name="com.sun.star.comp.rendering.CanvasFactory"
+      constructor="com_sun_star_comp_rendering_CanvasFactory_get_implementation">
+    <service name="com.sun.star.rendering.CanvasFactory"/>
+  </implementation>
+</component>
diff --git a/canvas/source/factory/cf_service.cxx b/canvas/source/factory/cf_service.cxx
new file mode 100644
index 000000000..a56551832
--- /dev/null
+++ b/canvas/source/factory/cf_service.cxx
@@ -0,0 +1,465 @@
+/* -*- 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 <algorithm>
+#include <mutex>
+#include <utility>
+#include <vector>
+
+#include <com/sun/star/configuration/theDefaultProvider.hpp>
+#include <com/sun/star/container/XHierarchicalNameAccess.hpp>
+#include <com/sun/star/container/XNameAccess.hpp>
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XServiceName.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <comphelper/propertysequence.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <o3tl/functional.hxx>
+#include <o3tl/string_view.hxx>
+#include <vcl/skia/SkiaHelper.hxx>
+#include <unotools/configmgr.hxx>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+
+
+namespace
+{
+
+class CanvasFactory
+    : public ::cppu::WeakImplHelper< lang::XServiceInfo,
+                                      lang::XMultiComponentFactory,
+                                      lang::XMultiServiceFactory >
+{
+    typedef std::pair< OUString, Sequence< OUString > > AvailPair;
+    typedef std::pair< OUString, OUString >             CachePair;
+    typedef std::vector< AvailPair >                    AvailVector;
+    typedef std::vector< CachePair >                    CacheVector;
+
+
+    mutable std::mutex                m_mutex;
+    Reference<XComponentContext>      m_xContext;
+    Reference<container::XNameAccess> m_xCanvasConfigNameAccess;
+    AvailVector                       m_aAvailableImplementations;
+    AvailVector                       m_aAcceleratedImplementations;
+    AvailVector                       m_aAAImplementations;
+    mutable CacheVector               m_aCachedImplementations;
+    mutable bool                      m_bCacheHasForcedLastImpl;
+    mutable bool                      m_bCacheHasUseAcceleratedEntry;
+    mutable bool                      m_bCacheHasUseAAEntry;
+
+    void checkConfigFlag( bool& r_bFlag,
+                          bool& r_CacheFlag,
+                          const OUString& nodeName ) const;
+    Reference<XInterface> use(
+        OUString const & serviceName,
+        Sequence<Any> const & args,
+        Reference<XComponentContext> const & xContext ) const;
+    Reference<XInterface> lookupAndUse(
+        OUString const & serviceName, Sequence<Any> const & args,
+        Reference<XComponentContext> const & xContext ) const;
+
+public:
+    virtual ~CanvasFactory() override;
+    explicit CanvasFactory( Reference<XComponentContext> const & xContext );
+
+    // XServiceInfo
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService( OUString const & serviceName ) override;
+    virtual Sequence<OUString> SAL_CALL getSupportedServiceNames() override;
+
+    // XMultiComponentFactory
+    virtual Sequence<OUString> SAL_CALL getAvailableServiceNames() override;
+    virtual Reference<XInterface> SAL_CALL createInstanceWithContext(
+        OUString const & name,
+        Reference<XComponentContext> const & xContext ) override;
+    virtual Reference<XInterface> SAL_CALL
+    createInstanceWithArgumentsAndContext(
+        OUString const & name,
+        Sequence<Any> const & args,
+        Reference<XComponentContext> const & xContext ) override;
+
+    // XMultiServiceFactory
+    virtual Reference<XInterface> SAL_CALL createInstance(
+        OUString const & name ) override;
+    virtual Reference<XInterface> SAL_CALL createInstanceWithArguments(
+        OUString const & name, Sequence<Any> const & args ) override;
+};
+
+CanvasFactory::CanvasFactory( Reference<XComponentContext> const & xContext ) :
+    m_xContext(xContext),
+    m_bCacheHasForcedLastImpl(),
+    m_bCacheHasUseAcceleratedEntry(),
+    m_bCacheHasUseAAEntry()
+{
+    if (!utl::ConfigManager::IsFuzzing())
+    {
+        try
+        {
+            // read out configuration for preferred services:
+            Reference<lang::XMultiServiceFactory> xConfigProvider(
+                configuration::theDefaultProvider::get( m_xContext ) );
+
+            uno::Sequence<uno::Any> aArgs(comphelper::InitAnyPropertySequence(
+            {
+                {"nodepath", uno::Any(OUString("/org.openoffice.Office.Canvas"))}
+            }));
+            m_xCanvasConfigNameAccess.set(
+                xConfigProvider->createInstanceWithArguments(
+                    "com.sun.star.configuration.ConfigurationAccess",
+                    aArgs ),
+                UNO_QUERY_THROW );
+
+            uno::Sequence<uno::Any> aArgs2(comphelper::InitAnyPropertySequence(
+            {
+                {"nodepath", uno::Any(OUString("/org.openoffice.Office.Canvas/CanvasServiceList"))}
+            }));
+            Reference<container::XNameAccess> xNameAccess(
+                xConfigProvider->createInstanceWithArguments(
+                    "com.sun.star.configuration.ConfigurationAccess",
+                    aArgs2 ), UNO_QUERY_THROW );
+            Reference<container::XHierarchicalNameAccess> xHierarchicalNameAccess(
+                xNameAccess, UNO_QUERY_THROW);
+
+            Sequence<OUString> serviceNames = xNameAccess->getElementNames();
+            const OUString* pCurr = serviceNames.getConstArray();
+            const OUString* const pEnd = pCurr + serviceNames.getLength();
+            while( pCurr != pEnd )
+            {
+                Reference<container::XNameAccess> xEntryNameAccess(
+                    xHierarchicalNameAccess->getByHierarchicalName(*pCurr),
+                    UNO_QUERY );
+
+                if( xEntryNameAccess.is() )
+                {
+                    Sequence<OUString> implementationList;
+                    if( xEntryNameAccess->getByName("PreferredImplementations") >>= implementationList )
+                    {
+                        m_aAvailableImplementations.emplace_back(*pCurr,implementationList );
+                    }
+                    if( xEntryNameAccess->getByName("AcceleratedImplementations") >>= implementationList )
+                    {
+                        m_aAcceleratedImplementations.emplace_back(*pCurr,implementationList );
+                    }
+                    if( xEntryNameAccess->getByName("AntialiasingImplementations") >>= implementationList )
+                    {
+                        m_aAAImplementations.emplace_back(*pCurr,implementationList );
+                    }
+
+                }
+
+                ++pCurr;
+            }
+        }
+        catch (const RuntimeException &)
+        {
+            throw;
+        }
+        catch (const Exception&)
+        {
+        }
+    }
+
+    if (m_aAvailableImplementations.empty())
+    {
+        // Ugh. Looks like configuration is borked. Fake minimal
+        // setup.
+        m_aAvailableImplementations.emplace_back(OUString("com.sun.star.rendering.Canvas"),
+            Sequence<OUString>{ "com.sun.star.comp.rendering.Canvas.VCL" } );
+
+        m_aAvailableImplementations.emplace_back(OUString("com.sun.star.rendering.SpriteCanvas"),
+            Sequence<OUString>{ "com.sun.star.comp.rendering.SpriteCanvas.VCL" } );
+    }
+}
+
+CanvasFactory::~CanvasFactory()
+{
+}
+
+
+// XServiceInfo
+OUString CanvasFactory::getImplementationName()
+{
+    return "com.sun.star.comp.rendering.CanvasFactory";
+}
+
+sal_Bool CanvasFactory::supportsService( OUString const & serviceName )
+{
+    return cppu::supportsService(this, serviceName);
+}
+
+Sequence<OUString> CanvasFactory::getSupportedServiceNames()
+{
+    return { "com.sun.star.rendering.CanvasFactory" };
+}
+
+// XMultiComponentFactory
+Sequence<OUString> CanvasFactory::getAvailableServiceNames()
+{
+    Sequence<OUString> aServiceNames(m_aAvailableImplementations.size());
+    std::transform(m_aAvailableImplementations.begin(),
+                   m_aAvailableImplementations.end(),
+                   aServiceNames.getArray(),
+                   o3tl::select1st< AvailPair >());
+    return aServiceNames;
+}
+
+Reference<XInterface> CanvasFactory::createInstanceWithContext(
+    OUString const & name, Reference<XComponentContext> const & xContext )
+{
+    return createInstanceWithArgumentsAndContext(
+        name, Sequence<Any>(), xContext );
+}
+
+
+Reference<XInterface> CanvasFactory::use(
+    OUString const & serviceName,
+    Sequence<Any> const & args,
+    Reference<XComponentContext> const & xContext ) const
+{
+    try {
+        return m_xContext->getServiceManager()->createInstanceWithArgumentsAndContext(
+            serviceName, args, xContext);
+    }
+    catch (css::lang::IllegalArgumentException &)
+    {
+        return Reference<XInterface>();
+    }
+    catch (const RuntimeException &)
+    {
+        throw;
+    }
+    catch (const Exception &)
+    {
+        return Reference<XInterface>();
+    }
+}
+
+
+void CanvasFactory::checkConfigFlag( bool& r_bFlag,
+                                     bool& r_CacheFlag,
+                                     const OUString& nodeName ) const
+{
+    if( m_xCanvasConfigNameAccess.is() )
+    {
+        m_xCanvasConfigNameAccess->getByName( nodeName ) >>= r_bFlag;
+
+        if( r_CacheFlag != r_bFlag )
+        {
+            // cache is invalid, because of different order of
+            // elements
+            r_CacheFlag = r_bFlag;
+            m_aCachedImplementations.clear();
+        }
+    }
+}
+
+
+Reference<XInterface> CanvasFactory::lookupAndUse(
+    OUString const & serviceName, Sequence<Any> const & args,
+    Reference<XComponentContext> const & xContext ) const
+{
+    std::scoped_lock guard(m_mutex);
+
+    // forcing last entry from impl list, if config flag set
+    bool bForceLastEntry(false);
+    checkConfigFlag( bForceLastEntry,
+                     m_bCacheHasForcedLastImpl,
+                     "ForceSafeServiceImpl" );
+
+    // use anti-aliasing canvas, if config flag set (or not existing)
+    bool bUseAAEntry(true);
+    checkConfigFlag( bUseAAEntry,
+                     m_bCacheHasUseAAEntry,
+                     "UseAntialiasingCanvas" );
+
+    // use accelerated canvas, if config flag set (or not existing)
+    bool bUseAcceleratedEntry(true);
+    checkConfigFlag( bUseAcceleratedEntry,
+                     m_bCacheHasUseAcceleratedEntry,
+                     "UseAcceleratedCanvas" );
+
+    // try to reuse last working implementation for given service name
+    const CacheVector::iterator aEnd(m_aCachedImplementations.end());
+    auto aMatch = std::find_if(
+                    m_aCachedImplementations.begin(),
+                    aEnd,
+                    [&serviceName](CachePair const& cp)
+                    { return serviceName == cp.first; }
+                    );
+    if( aMatch != aEnd ) {
+        Reference<XInterface> xCanvas( use( aMatch->second, args, xContext ) );
+        if(xCanvas.is())
+            return xCanvas;
+    }
+
+    // lookup in available service list
+    const AvailVector::const_iterator aAvailEnd(m_aAvailableImplementations.end());
+    auto aAvailImplsMatch = std::find_if(
+                    m_aAvailableImplementations.begin(),
+                    aAvailEnd,
+                    [&serviceName](AvailPair const& ap)
+                    { return serviceName == ap.first; }
+                    );
+    if( aAvailImplsMatch == aAvailEnd ) {
+        return Reference<XInterface>();
+    }
+
+    const AvailVector::const_iterator aAAEnd(m_aAAImplementations.end());
+    auto aAAImplsMatch = std::find_if(
+                    m_aAAImplementations.begin(),
+                    aAAEnd,
+                    [&serviceName](AvailPair const& ap)
+                    { return serviceName == ap.first; }
+                    );
+    if( aAAImplsMatch == aAAEnd ) {
+        return Reference<XInterface>();
+    }
+
+    const AvailVector::const_iterator aAccelEnd(m_aAcceleratedImplementations.end());
+    auto aAccelImplsMatch = std::find_if(
+                    m_aAcceleratedImplementations.begin(),
+                    aAccelEnd,
+                    [&serviceName](AvailPair const& ap)
+                    { return serviceName == ap.first; }
+                    );
+    if( aAccelImplsMatch == aAccelEnd ) {
+        return Reference<XInterface>();
+    }
+
+    const Sequence<OUString> aPreferredImpls( aAvailImplsMatch->second );
+    const OUString* pCurrImpl = aPreferredImpls.begin();
+    const OUString* const pEndImpl = aPreferredImpls.end();
+
+    const Sequence<OUString> aAAImpls( aAAImplsMatch->second );
+
+    const Sequence<OUString> aAccelImpls( aAccelImplsMatch->second );
+
+    // force last entry from impl list, if config flag set
+    if (bForceLastEntry && pCurrImpl != pEndImpl)
+        pCurrImpl = pEndImpl-1;
+
+    for(; pCurrImpl != pEndImpl; ++pCurrImpl)
+    {
+        const OUString aCurrName(pCurrImpl->trim());
+
+        // Skia works only with vclcanvas.
+        if( SkiaHelper::isVCLSkiaEnabled() && !aCurrName.endsWith(".VCL"))
+            continue;
+
+        // check whether given canvas service is listed in the
+        // sequence of "accelerated canvas implementations"
+        const bool bIsAcceleratedImpl(
+            std::any_of(aAccelImpls.begin(), aAccelImpls.end(),
+                         [&aCurrName](OUString const& src)
+                         { return aCurrName == o3tl::trim(src); }
+                ));
+
+        // check whether given canvas service is listed in the
+        // sequence of "antialiasing canvas implementations"
+        const bool bIsAAImpl(
+            std::any_of(aAAImpls.begin(), aAAImpls.end(),
+                         [&aCurrName](OUString const& src)
+                         { return aCurrName == o3tl::trim(src); }
+                ));
+
+        // try to instantiate canvas *only* if either accel and AA
+        // property match preference, *or*, if there's a mismatch, only
+        // go for a less capable canvas (that effectively let those
+        // pour canvas impls still work as fallbacks, should an
+        // accelerated/AA one fail). Property implies configuration:
+        // http://en.wikipedia.org/wiki/Truth_table#Logical_implication
+        if( (!bIsAAImpl || bUseAAEntry) && (!bIsAcceleratedImpl || bUseAcceleratedEntry) )
+        {
+            Reference<XInterface> xCanvas(use(aCurrName, args, xContext));
+
+            if(xCanvas.is())
+            {
+                if( aMatch != aEnd )
+                {
+                    // cache entry exists, replace dysfunctional
+                    // implementation name
+                    aMatch->second = aCurrName;
+                }
+                else
+                {
+                    // new service name, add new cache entry
+                    m_aCachedImplementations.emplace_back(serviceName, aCurrName);
+                }
+
+                return xCanvas;
+            }
+        }
+    }
+
+    return Reference<XInterface>();
+}
+
+
+Reference<XInterface> CanvasFactory::createInstanceWithArgumentsAndContext(
+    OUString const & preferredOne, Sequence<Any> const & args,
+    Reference<XComponentContext> const & xContext )
+{
+    Reference<XInterface> xCanvas(lookupAndUse(preferredOne, args, xContext));
+    if (!xCanvas.is())
+        // last resort: try service name directly
+        xCanvas = use(preferredOne, args, xContext);
+
+    if (xCanvas.is())
+    {
+        Reference<lang::XServiceName> xServiceName(xCanvas, uno::UNO_QUERY);
+        SAL_INFO("canvas", "using " << (xServiceName.is() ? xServiceName->getServiceName()
+                                                          : OUString("(unknown)")));
+    }
+    return xCanvas;
+}
+
+// XMultiServiceFactory
+
+Reference<XInterface> CanvasFactory::createInstance( OUString const & name )
+{
+    return createInstanceWithArgumentsAndContext(
+        name, Sequence<Any>(), m_xContext );
+}
+
+
+Reference<XInterface> CanvasFactory::createInstanceWithArguments(
+    OUString const & name, Sequence<Any> const & args )
+{
+    return createInstanceWithArgumentsAndContext(
+        name, args, m_xContext );
+}
+
+} // anon namespace
+
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+com_sun_star_comp_rendering_CanvasFactory_get_implementation(css::uno::XComponentContext* context,
+                                                             css::uno::Sequence<css::uno::Any> const &)
+{
+    return cppu::acquire(new CanvasFactory(context));
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */