chart2/source/tools/LegendHelper.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 <LegendHelper.hxx>
  21 #include <Legend.hxx>
  22 #include <ChartModel.hxx>
  23 #include <Diagram.hxx>
  24 #include <com/sun/star/chart/ChartLegendExpansion.hpp>
  25 #include <com/sun/star/chart2/LegendPosition.hpp>
  26 #include <com/sun/star/chart2/RelativePosition.hpp>
  27 #include <com/sun/star/uno/XComponentContext.hpp>
  28 #include <comphelper/diagnose_ex.hxx>
  29
  30 using namespace ::com::sun::star;
  31 using ::com::sun::star::uno::Reference;
  32
  33 namespace chart
  34 {
  35
  36 rtl::Reference< Legend > LegendHelper::showLegend( ChartModel& rModel
  37                                                     , const uno::Reference< uno::XComponentContext >& xContext )
  38 {
  39     rtl::Reference< Legend > xLegend = LegendHelper::getLegend( rModel, xContext, true );
  40     if( xLegend.is())
  41     {
  42         xLegend->setPropertyValue( u"Show"_ustr, uno::Any(true) );
  43
  44         chart2::RelativePosition aRelativePosition;
  45         if( !(xLegend->getPropertyValue( u"RelativePosition"_ustr) >>=  aRelativePosition) )
  46         {
  47             chart2::LegendPosition ePos = chart2::LegendPosition_LINE_END;
  48             if( !(xLegend->getPropertyValue( u"AnchorPosition"_ustr) >>= ePos ) )
  49                 xLegend->setPropertyValue( u"AnchorPosition"_ustr, uno::Any( ePos ));
  50
  51             css::chart::ChartLegendExpansion eExpansion =
  52                     ( ePos == chart2::LegendPosition_LINE_END ||
  53                       ePos == chart2::LegendPosition_LINE_START )
  54                     ? css::chart::ChartLegendExpansion_HIGH
  55                     : css::chart::ChartLegendExpansion_WIDE;
  56             if( !(xLegend->getPropertyValue( u"Expansion"_ustr) >>= eExpansion ) )
  57                 xLegend->setPropertyValue( u"Expansion"_ustr, uno::Any( eExpansion ));
  58
  59             xLegend->setPropertyValue( u"RelativePosition"_ustr, uno::Any());
  60         }
  61
  62     }
  63     return xLegend;
  64 }
  65
  66 void LegendHelper::hideLegend( ChartModel& rModel )
  67 {
  68     rtl::Reference< Legend > xLegend = LegendHelper::getLegend( rModel, nullptr );
  69     if( xLegend.is())
  70     {
  71         xLegend->setPropertyValue( u"Show"_ustr, uno::Any(false) );
  72     }
  73 }
  74
  75 rtl::Reference< Legend > LegendHelper::getLegend(
  76       ChartModel& rModel
  77     , const uno::Reference< uno::XComponentContext >& xContext
  78     , bool bCreate )
  79 {
  80     rtl::Reference< Legend > xResult;
  81
  82     try
  83     {
  84         rtl::Reference< Diagram > xDia( rModel.getFirstChartDiagram());
  85         if( xDia.is() )
  86         {
  87             xResult = xDia->getLegend2();
  88             if( bCreate && !xResult.is() && xContext.is() )
  89             {
  90                 xResult = new Legend();
  91                 xDia->setLegend( xResult );
  92             }
  93         }
  94         else if(bCreate)
  95         {
  96             OSL_FAIL("need diagram for creation of legend");
  97         }
  98     }
  99     catch( const uno::Exception & )
 100     {
 101         DBG_UNHANDLED_EXCEPTION("chart2");
 102     }
 103
 104     return xResult;
 105 }
 106
 107 bool LegendHelper::hasLegend( const rtl::Reference< Diagram > & xDiagram )
 108 {
 109     bool bReturn = false;
 110     if( xDiagram.is())
 111     {
 112         uno::Reference< beans::XPropertySet > xLegendProp( xDiagram->getLegend(), uno::UNO_QUERY );
 113         if( xLegendProp.is())
 114             xLegendProp->getPropertyValue( u"Show"_ustr) >>= bReturn;
 115     }
 116
 117     return bReturn;
 118 }
 119
 120 } //namespace chart
 121
 122 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */