chart2/source/tools/ConfigColorScheme.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include "ConfigColorScheme.hxx"
  21 #include "ContainerHelper.hxx"
  22 #include "macros.hxx"
  23
  24 #include <unotools/configitem.hxx>
  25 #include <sal/macros.h>
  26 #include <cppuhelper/supportsservice.hxx>
  27
  28 #include <set>
  29
  30 using namespace ::com::sun::star;
  31
  32 using ::com::sun::star::uno::Reference;
  33 using ::com::sun::star::uno::Sequence;
  34
  35 namespace
  36 {
  37
  38 static const char aSeriesPropName[] = "Series";
  39
  40 } // anonymous namespace
  41
  42 namespace chart
  43 {
  44
  45 uno::Reference< chart2::XColorScheme > createConfigColorScheme( const uno::Reference< uno::XComponentContext > & xContext )
  46 {
  47     return new ConfigColorScheme( xContext );
  48 }
  49
  50 namespace impl
  51 {
  52 class ChartConfigItem : public ::utl::ConfigItem
  53 {
  54 public:
  55     explicit ChartConfigItem( ConfigItemListener & rListener );
  56     virtual ~ChartConfigItem();
  57
  58     void addPropertyNotification( const OUString & rPropertyName );
  59
  60     uno::Any getProperty( const OUString & aPropertyName );
  61
  62 protected:
  63     // ____ ::utl::ConfigItem ____
  64     virtual void                    ImplCommit() SAL_OVERRIDE;
  65     virtual void Notify( const Sequence< OUString > & aPropertyNames ) SAL_OVERRIDE;
  66
  67 private:
  68     ConfigItemListener & m_rListener;
  69     ::std::set< OUString >        m_aPropertiesToNotify;
  70 };
  71
  72 ChartConfigItem::ChartConfigItem( ConfigItemListener & rListener ) :
  73         ::utl::ConfigItem( "Office.Chart/DefaultColor" ),
  74     m_rListener( rListener )
  75 {}
  76
  77 ChartConfigItem::~ChartConfigItem()
  78 {}
  79
  80 void ChartConfigItem::Notify( const Sequence< OUString > & aPropertyNames )
  81 {
  82     for( sal_Int32 nIdx=0; nIdx<aPropertyNames.getLength(); ++nIdx )
  83     {
  84         if( m_aPropertiesToNotify.find( aPropertyNames[nIdx] ) != m_aPropertiesToNotify.end())
  85             m_rListener.notify( aPropertyNames[nIdx] );
  86     }
  87 }
  88
  89 void ChartConfigItem::ImplCommit()
  90 {}
  91
  92 void ChartConfigItem::addPropertyNotification( const OUString & rPropertyName )
  93 {
  94     m_aPropertiesToNotify.insert( rPropertyName );
  95     EnableNotification( ContainerHelper::ContainerToSequence( m_aPropertiesToNotify ));
  96 }
  97
  98 uno::Any ChartConfigItem::getProperty( const OUString & aPropertyName )
  99 {
 100     Sequence< uno::Any > aValues(
 101         GetProperties( Sequence< OUString >( &aPropertyName, 1 )));
 102     if( ! aValues.getLength())
 103         return uno::Any();
 104     return aValues[0];
 105 }
 106
 107 } // namespace impl
 108
 109 // explicit
 110 ConfigColorScheme::ConfigColorScheme(
 111     const Reference< uno::XComponentContext > & xContext ) :
 112         m_xContext( xContext  ),
 113         m_nNumberOfColors( 0 ),
 114         m_bNeedsUpdate( true )
 115 {
 116 }
 117
 118 ConfigColorScheme::~ConfigColorScheme()
 119 {}
 120
 121 void ConfigColorScheme::retrieveConfigColors()
 122 {
 123     if( ! m_xContext.is())
 124         return;
 125
 126     // create config item if necessary
 127     if( ! m_apChartConfigItem.get())
 128     {
 129         m_apChartConfigItem.reset(
 130             new impl::ChartConfigItem( *this ));
 131         m_apChartConfigItem->addPropertyNotification( aSeriesPropName );
 132     }
 133     OSL_ASSERT( m_apChartConfigItem.get());
 134     if( ! m_apChartConfigItem.get())
 135         return;
 136
 137     // retrieve colors
 138     uno::Any aValue(
 139         m_apChartConfigItem->getProperty( aSeriesPropName ));
 140     if( aValue >>= m_aColorSequence )
 141         m_nNumberOfColors = m_aColorSequence.getLength();
 142     m_bNeedsUpdate = false;
 143 }
 144
 145 // ____ XColorScheme ____
 146 ::sal_Int32 SAL_CALL ConfigColorScheme::getColorByIndex( ::sal_Int32 nIndex )
 147     throw (uno::RuntimeException, std::exception)
 148 {
 149     if( m_bNeedsUpdate )
 150         retrieveConfigColors();
 151
 152     if( m_nNumberOfColors > 0 )
 153         return static_cast< sal_Int32 >( m_aColorSequence[ nIndex % m_nNumberOfColors ] );
 154
 155     // fall-back: hard-coded standard colors
 156     static const sal_Int32 nDefaultColors[] =  {
 157         0x9999ff, 0x993366, 0xffffcc,
 158         0xccffff, 0x660066, 0xff8080,
 159         0x0066cc, 0xccccff, 0x000080,
 160         0xff00ff, 0x00ffff, 0xffff00
 161     };
 162
 163     static const sal_Int32 nMaxDefaultColors = SAL_N_ELEMENTS( nDefaultColors );
 164     return nDefaultColors[ nIndex % nMaxDefaultColors ];
 165 }
 166
 167 void ConfigColorScheme::notify( const OUString & rPropertyName )
 168 {
 169     if( rPropertyName == aSeriesPropName )
 170         m_bNeedsUpdate = true;
 171 }
 172
 173 Sequence< OUString > ConfigColorScheme::getSupportedServiceNames_Static()
 174 {
 175     Sequence< OUString > aServices( 1 );
 176     aServices[ 0 ] = "com.sun.star.chart2.ColorScheme";
 177     return aServices;
 178 }
 179
 180 // implement XServiceInfo methods basing upon getSupportedServiceNames_Static
 181 OUString SAL_CALL ConfigColorScheme::getImplementationName()
 182     throw( css::uno::RuntimeException, std::exception )
 183 {
 184     return getImplementationName_Static();
 185 }
 186
 187 OUString ConfigColorScheme::getImplementationName_Static()
 188 {
 189     return OUString("com.sun.star.comp.chart2.ConfigDefaultColorScheme") ;
 190 }
 191
 192 sal_Bool SAL_CALL ConfigColorScheme::supportsService( const OUString& rServiceName )
 193     throw( css::uno::RuntimeException, std::exception )
 194 {
 195     return cppu::supportsService(this, rServiceName);
 196 }
 197
 198 css::uno::Sequence< OUString > SAL_CALL ConfigColorScheme::getSupportedServiceNames()
 199     throw( css::uno::RuntimeException, std::exception )
 200 {
 201     return getSupportedServiceNames_Static();
 202 }
 203
 204 } //  namespace chart
 205
 206 extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface * SAL_CALL
 207 com_sun_star_comp_chart2_ConfigDefaultColorScheme_get_implementation(css::uno::XComponentContext *context,
 208         css::uno::Sequence<css::uno::Any> const &)
 209 {
 210     return cppu::acquire(new ::chart::ConfigColorScheme(context));
 211 }
 212
 213 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */