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/* -*- 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 <sal/config.h>
#include <com/sun/star/container/XNameAccess.hpp>
#include <com/sun/star/container/XNameContainer.hpp>
#include <com/sun/star/drawing/ColorTable.hpp>
#include <com/sun/star/uno/Any.hxx>
#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/uno/RuntimeException.hpp>
#include <com/sun/star/uno/Sequence.hxx>
#include <comphelper/processfactory.hxx>
#include <rtl/ustring.hxx>
#include <vcl/svapp.hxx>
#include "lookupcolorname.hxx"
#include <unordered_map>
namespace
{
class ColorNameMap
{
public:
ColorNameMap();
ColorNameMap(const ColorNameMap&) = delete;
ColorNameMap& operator=(const ColorNameMap&) = delete;
OUString lookUp(tools::Long color) const;
private:
typedef std::unordered_map<tools::Long, OUString> Map;
Map map_;
};
ColorNameMap::ColorNameMap()
{
css::uno::Sequence<OUString> aNames;
css::uno::Reference<css::container::XNameAccess> xNA;
try
{
// Create color table in which to look up the given color.
css::uno::Reference<css::container::XNameContainer> xColorTable
= css::drawing::ColorTable::create(comphelper::getProcessComponentContext());
// Get list of color names in order to iterate over the color table.
// Lock the solar mutex here as workaround for missing lock in
// called function.
SolarMutexGuard aGuard;
xNA = xColorTable;
aNames = xColorTable->getElementNames();
}
catch (css::uno::RuntimeException const&)
{
// When an exception occurred then we have an empty name sequence
// and the loop below is not entered.
}
// Fill the map to convert from numerical color values to names.
if (!xNA.is())
return;
for (const auto& rName : std::as_const(aNames))
{
// Get the numerical value for the i-th color name.
try
{
css::uno::Any aColor = xNA->getByName(rName);
tools::Long nColor = 0;
aColor >>= nColor;
map_[nColor] = rName;
}
catch (css::uno::RuntimeException const&)
{
// Ignore the exception: the color who lead to the exception
// is not included into the map.
}
}
}
OUString ColorNameMap::lookUp(tools::Long color) const
{
Map::const_iterator i(map_.find(color));
if (i != map_.end())
{
return i->second;
}
// Did not find the given color; return its RGB tuple representation:
return "#" + OUString::number(color, 16);
}
}
namespace accessibility
{
OUString lookUpColorName(tools::Long color)
{
static ColorNameMap theColorNameMap;
return theColorNameMap.lookUp(color);
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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