chart2/source/tools/ConfigColorScheme.cxx

   1 /*************************************************************************
   2  *
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * Copyright 2008 by Sun Microsystems, Inc.
   6  *
   7  * OpenOffice.org - a multi-platform office productivity suite
   8  *
   9  * $RCSfile: ConfigColorScheme.cxx,v $
  10  * $Revision: 1.3.44.1 $
  11  *
  12  * This file is part of OpenOffice.org.
  13  *
  14  * OpenOffice.org is free software: you can redistribute it and/or modify
  15  * it under the terms of the GNU Lesser General Public License version 3
  16  * only, as published by the Free Software Foundation.
  17  *
  18  * OpenOffice.org is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU Lesser General Public License version 3 for more details
  22  * (a copy is included in the LICENSE file that accompanied this code).
  23  *
  24  * You should have received a copy of the GNU Lesser General Public License
  25  * version 3 along with OpenOffice.org.  If not, see
  26  * <http://www.openoffice.org/license.html>
  27  * for a copy of the LGPLv3 License.
  28  *
  29  ************************************************************************/
  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_chart2.hxx"
  33
  34 #include "ConfigColorScheme.hxx"
  35 #include "ContainerHelper.hxx"
  36 #include "macros.hxx"
  37
  38 #include <unotools/configitem.hxx>
  39
  40 #include <set>
  41
  42 using namespace ::com::sun::star;
  43
  44 using ::com::sun::star::uno::Reference;
  45 using ::com::sun::star::uno::Sequence;
  46 using ::rtl::OUString;
  47
  48 namespace
  49 {
  50
  51 static const OUString aSeriesPropName( RTL_CONSTASCII_USTRINGPARAM("Series"));
  52
  53 } // anonymous namespace
  54
  55 // --------------------------------------------------------------------------------
  56
  57 namespace chart
  58 {
  59
  60 uno::Reference< chart2::XColorScheme > createConfigColorScheme( const uno::Reference< uno::XComponentContext > & xContext )
  61 {
  62     return new ConfigColorScheme( xContext );
  63 }
  64
  65 namespace impl
  66 {
  67 class ChartConfigItem : public ::utl::ConfigItem
  68 {
  69 public:
  70     explicit ChartConfigItem( ConfigItemListener & rListener );
  71     virtual ~ChartConfigItem();
  72
  73     void addPropertyNotification( const OUString & rPropertyName );
  74
  75     uno::Any getProperty( const OUString & aPropertyName );
  76
  77 protected:
  78     // ____ ::utl::ConfigItem ____
  79     virtual void Notify( const Sequence< OUString > & aPropertyNames );
  80
  81 private:
  82     ConfigItemListener & m_rListener;
  83     ::std::set< OUString >        m_aPropertiesToNotify;
  84 };
  85
  86 ChartConfigItem::ChartConfigItem( ConfigItemListener & rListener ) :
  87         ::utl::ConfigItem( C2U("Office.Chart/DefaultColor")),
  88     m_rListener( rListener )
  89 {}
  90
  91 ChartConfigItem::~ChartConfigItem()
  92 {}
  93
  94 void ChartConfigItem::Notify( const Sequence< OUString > & aPropertyNames )
  95 {
  96     for( sal_Int32 nIdx=0; nIdx<aPropertyNames.getLength(); ++nIdx )
  97     {
  98         if( m_aPropertiesToNotify.find( aPropertyNames[nIdx] ) != m_aPropertiesToNotify.end())
  99             m_rListener.notify( aPropertyNames[nIdx] );
 100     }
 101 }
 102
 103 void ChartConfigItem::addPropertyNotification( const OUString & rPropertyName )
 104 {
 105     m_aPropertiesToNotify.insert( rPropertyName );
 106     EnableNotification( ContainerHelper::ContainerToSequence( m_aPropertiesToNotify ));
 107 }
 108
 109 uno::Any ChartConfigItem::getProperty( const OUString & aPropertyName )
 110 {
 111     Sequence< uno::Any > aValues(
 112         GetProperties( Sequence< OUString >( &aPropertyName, 1 )));
 113     if( ! aValues.getLength())
 114         return uno::Any();
 115     return aValues[0];
 116 }
 117
 118 } // namespace impl
 119
 120 // --------------------------------------------------------------------------------
 121
 122 // explicit
 123 ConfigColorScheme::ConfigColorScheme(
 124     const Reference< uno::XComponentContext > & xContext ) :
 125         m_xContext( xContext  ),
 126         m_nNumberOfColors( 0 ),
 127         m_bNeedsUpdate( true )
 128 {
 129 }
 130
 131 ConfigColorScheme::~ConfigColorScheme()
 132 {}
 133
 134 void ConfigColorScheme::retrieveConfigColors()
 135 {
 136     if( ! m_xContext.is())
 137         return;
 138
 139     // create config item if necessary
 140     if( ! m_apChartConfigItem.get())
 141     {
 142         m_apChartConfigItem.reset(
 143             new impl::ChartConfigItem( *this ));
 144         m_apChartConfigItem->addPropertyNotification( aSeriesPropName );
 145     }
 146     OSL_ASSERT( m_apChartConfigItem.get());
 147     if( ! m_apChartConfigItem.get())
 148         return;
 149
 150     // retrieve colors
 151     uno::Any aValue(
 152         m_apChartConfigItem->getProperty( aSeriesPropName ));
 153     if( aValue >>= m_aColorSequence )
 154         m_nNumberOfColors = m_aColorSequence.getLength();
 155     m_bNeedsUpdate = false;
 156 }
 157
 158 // ____ XColorScheme ____
 159 ::sal_Int32 SAL_CALL ConfigColorScheme::getColorByIndex( ::sal_Int32 nIndex )
 160     throw (uno::RuntimeException)
 161 {
 162     if( m_bNeedsUpdate )
 163         retrieveConfigColors();
 164
 165     if( m_nNumberOfColors > 0 )
 166         return static_cast< sal_Int32 >( m_aColorSequence[ nIndex % m_nNumberOfColors ] );
 167
 168     // fall-back: hard-coded standard colors
 169     static sal_Int32 nDefaultColors[] =  {
 170         0x9999ff, 0x993366, 0xffffcc,
 171         0xccffff, 0x660066, 0xff8080,
 172         0x0066cc, 0xccccff, 0x000080,
 173         0xff00ff, 0x00ffff, 0xffff00
 174     };
 175
 176     static const sal_Int32 nMaxDefaultColors = sizeof( nDefaultColors ) / sizeof( sal_Int32 );
 177     return nDefaultColors[ nIndex % nMaxDefaultColors ];
 178 }
 179
 180 void ConfigColorScheme::notify( const OUString & rPropertyName )
 181 {
 182     if( rPropertyName.equals( aSeriesPropName ))
 183         m_bNeedsUpdate = true;
 184 }
 185
 186 // ================================================================================
 187
 188 Sequence< OUString > ConfigColorScheme::getSupportedServiceNames_Static()
 189 {
 190     Sequence< OUString > aServices( 1 );
 191     aServices[ 0 ] = C2U( "com.sun.star.chart2.ColorScheme" );
 192     return aServices;
 193 }
 194
 195 // implement XServiceInfo methods basing upon getSupportedServiceNames_Static
 196 APPHELPER_XSERVICEINFO_IMPL( ConfigColorScheme,
 197                              C2U( "com.sun.star.comp.chart2.ConfigDefaultColorScheme" ))
 198
 199 // ================================================================================
 200
 201 } //  namespace chart