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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
commit | ed5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch) | |
tree | 7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /svx/source/accessibility/lookupcolorname.cxx | |
parent | Initial commit. (diff) | |
download | libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip |
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'svx/source/accessibility/lookupcolorname.cxx')
-rw-r--r-- | svx/source/accessibility/lookupcolorname.cxx | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/svx/source/accessibility/lookupcolorname.cxx b/svx/source/accessibility/lookupcolorname.cxx new file mode 100644 index 000000000..373dae469 --- /dev/null +++ b/svx/source/accessibility/lookupcolorname.cxx @@ -0,0 +1,121 @@ +/* -*- 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: */ |