1 files changed, 90 insertions, 0 deletions
diff --git a/chart2/source/tools/RelativeSizeHelper.cxx b/chart2/source/tools/RelativeSizeHelper.cxx
new file mode 100644
index 000000000..a142d5b29
--- /dev/null
+++ b/chart2/source/tools/RelativeSizeHelper.cxx
@@ -0,0 +1,90 @@
+/* -*- 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 <RelativeSizeHelper.hxx>
+#include <com/sun/star/awt/Size.hpp>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <tools/diagnose_ex.h>
+
+#include <vector>
+#include <algorithm>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::beans;
+using namespace ::std;
+
+using ::com::sun::star::uno::Reference;
+using ::com::sun::star::uno::Any;
+using ::com::sun::star::uno::Exception;
+
+namespace chart
+{
+
+double RelativeSizeHelper::calculate(
+    double fValue,
+    const awt::Size & rOldReferenceSize,
+    const awt::Size & rNewReferenceSize )
+{
+    if( rOldReferenceSize.Width <= 0 ||
+        rOldReferenceSize.Height <= 0 )
+        return fValue;
+
+    return min(
+        static_cast< double >( rNewReferenceSize.Width )  / static_cast< double >( rOldReferenceSize.Width ),
+        static_cast< double >( rNewReferenceSize.Height ) / static_cast< double >( rOldReferenceSize.Height ))
+        * fValue;
+}
+
+void RelativeSizeHelper::adaptFontSizes(
+    const Reference< XPropertySet > & xTargetProperties,
+    const awt::Size & rOldReferenceSize,
+    const awt::Size & rNewReferenceSize )
+{
+    if( ! xTargetProperties.is())
+        return;
+
+    float fFontHeight = 0;
+
+    vector< OUString > aProperties;
+    aProperties.emplace_back("CharHeight" );
+    aProperties.emplace_back("CharHeightAsian" );
+    aProperties.emplace_back("CharHeightComplex" );
+
+    for (auto const& property : aProperties)
+    {
+        try
+        {
+            if( xTargetProperties->getPropertyValue(property) >>= fFontHeight )
+            {
+                xTargetProperties->setPropertyValue(
+                    property,
+                    Any( static_cast< float >(
+                                 calculate( fFontHeight, rOldReferenceSize, rNewReferenceSize ))));
+            }
+        }
+        catch( const Exception & )
+        {
+            DBG_UNHANDLED_EXCEPTION("chart2");
+        }
+    }
+}
+
+} //  namespace chart
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */