1 files changed, 188 insertions, 0 deletions
diff --git a/chart2/source/tools/ConfigColorScheme.cxx b/chart2/source/tools/ConfigColorScheme.cxx
new file mode 100644
index 000000000..f6bbfe232
--- /dev/null
+++ b/chart2/source/tools/ConfigColorScheme.cxx
@@ -0,0 +1,188 @@
+/* -*- 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 <ConfigColorScheme.hxx>
+
+#include <unotools/configitem.hxx>
+#include <sal/macros.h>
+#include <cppuhelper/supportsservice.hxx>
+#include <comphelper/sequence.hxx>
+
+#include <set>
+
+using namespace ::com::sun::star;
+
+using ::com::sun::star::uno::Reference;
+using ::com::sun::star::uno::Sequence;
+
+namespace
+{
+
+constexpr OUStringLiteral aSeriesPropName = u"Series";
+
+} // anonymous namespace
+
+namespace chart
+{
+
+uno::Reference< chart2::XColorScheme > createConfigColorScheme( const uno::Reference< uno::XComponentContext > & xContext )
+{
+    return new ConfigColorScheme( xContext );
+}
+
+namespace impl
+{
+class ChartConfigItem : public ::utl::ConfigItem
+{
+public:
+    explicit ChartConfigItem( ConfigColorScheme & rListener );
+
+    void addPropertyNotification( const OUString & rPropertyName );
+    uno::Any getProperty( const OUString & aPropertyName );
+
+protected:
+    // ____ ::utl::ConfigItem ____
+    virtual void ImplCommit() override;
+    virtual void Notify( const Sequence< OUString > & aPropertyNames ) override;
+
+private:
+    ConfigColorScheme &      m_rListener;
+    std::set< OUString >   m_aPropertiesToNotify;
+};
+
+ChartConfigItem::ChartConfigItem( ConfigColorScheme & rListener ) :
+        ::utl::ConfigItem( "Office.Chart/DefaultColor" ),
+    m_rListener( rListener )
+{}
+
+void ChartConfigItem::Notify( const Sequence< OUString > & aPropertyNames )
+{
+    for( OUString const & s : aPropertyNames )
+    {
+        if( m_aPropertiesToNotify.find( s ) != m_aPropertiesToNotify.end())
+            m_rListener.notify( s );
+    }
+}
+
+void ChartConfigItem::ImplCommit()
+{}
+
+void ChartConfigItem::addPropertyNotification( const OUString & rPropertyName )
+{
+    m_aPropertiesToNotify.insert( rPropertyName );
+    EnableNotification( comphelper::containerToSequence( m_aPropertiesToNotify ));
+}
+
+uno::Any ChartConfigItem::getProperty( const OUString & aPropertyName )
+{
+    Sequence< uno::Any > aValues(
+        GetProperties( Sequence< OUString >( &aPropertyName, 1 )));
+    if( ! aValues.hasElements())
+        return uno::Any();
+    return aValues[0];
+}
+
+} // namespace impl
+
+// explicit
+ConfigColorScheme::ConfigColorScheme(
+    const Reference< uno::XComponentContext > & xContext ) :
+        m_xContext( xContext  ),
+        m_nNumberOfColors( 0 ),
+        m_bNeedsUpdate( true )
+{
+}
+
+ConfigColorScheme::~ConfigColorScheme()
+{}
+
+void ConfigColorScheme::retrieveConfigColors()
+{
+    if( ! m_xContext.is())
+        return;
+
+    // create config item if necessary
+    if (!m_apChartConfigItem)
+    {
+        m_apChartConfigItem.reset(
+            new impl::ChartConfigItem( *this ));
+        m_apChartConfigItem->addPropertyNotification( aSeriesPropName );
+    }
+    assert(m_apChartConfigItem && "this can only be set at this point");
+
+    // retrieve colors
+    uno::Any aValue(
+        m_apChartConfigItem->getProperty( aSeriesPropName ));
+    if( aValue >>= m_aColorSequence )
+        m_nNumberOfColors = m_aColorSequence.getLength();
+    m_bNeedsUpdate = false;
+}
+
+// ____ XColorScheme ____
+::sal_Int32 SAL_CALL ConfigColorScheme::getColorByIndex( ::sal_Int32 nIndex )
+{
+    if( m_bNeedsUpdate )
+        retrieveConfigColors();
+
+    if( m_nNumberOfColors > 0 )
+        return static_cast< sal_Int32 >( m_aColorSequence[ nIndex % m_nNumberOfColors ] );
+
+    // fall-back: hard-coded standard colors
+    static const sal_Int32 nDefaultColors[] =  {
+        0x9999ff, 0x993366, 0xffffcc,
+        0xccffff, 0x660066, 0xff8080,
+        0x0066cc, 0xccccff, 0x000080,
+        0xff00ff, 0x00ffff, 0xffff00
+    };
+
+    static const sal_Int32 nMaxDefaultColors = std::size( nDefaultColors );
+    return nDefaultColors[ nIndex % nMaxDefaultColors ];
+}
+
+void ConfigColorScheme::notify( std::u16string_view rPropertyName )
+{
+    if( rPropertyName == aSeriesPropName )
+        m_bNeedsUpdate = true;
+}
+
+OUString SAL_CALL ConfigColorScheme::getImplementationName()
+{
+    return "com.sun.star.comp.chart2.ConfigDefaultColorScheme" ;
+}
+
+sal_Bool SAL_CALL ConfigColorScheme::supportsService( const OUString& rServiceName )
+{
+    return cppu::supportsService(this, rServiceName);
+}
+
+css::uno::Sequence< OUString > SAL_CALL ConfigColorScheme::getSupportedServiceNames()
+{
+    return { "com.sun.star.chart2.ColorScheme" };
+}
+
+} //  namespace chart
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
+com_sun_star_comp_chart2_ConfigDefaultColorScheme_get_implementation(css::uno::XComponentContext *context,
+        css::uno::Sequence<css::uno::Any> const &)
+{
+    return cppu::acquire(new ::chart::ConfigColorScheme(context));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */