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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef INCLUDED_BASEBMP_INTCONVERSION_HXX
+#define INCLUDED_BASEBMP_INTCONVERSION_HXX
+
+#include <vigra/rgbvalue.hxx>
+#include <functional>
+
+namespace basebmp
+{
+ // metafunctions to retrieve correct POD from/to basebmp::Color
+ //------------------------------------------------------------------------
+
+ /// type-safe conversion from RgbValue to packed int32
+ template< class RgbVal > struct UInt32FromRgbValue
+ {
+ sal_uInt32 operator()( RgbVal const& c ) const
+ {
+ return (c[0] << 16) | (c[1] << 8) | c[2];
+ }
+ };
+
+ /// type-safe conversion from packed int32 to RgbValue
+ template< class RgbVal > struct RgbValueFromUInt32
+ {
+ RgbVal operator()( sal_uInt32 c ) const
+ {
+ return RgbVal((c >> 16) & 0xFF,
+ (c >> 8) & 0xFF,
+ c & 0xFF);
+ }
+ };
+
+ /// Get converter from given data type to sal_uInt32
+ template< typename DataType > struct uInt32Converter
+ {
+ typedef std::identity<DataType> to;
+ typedef std::identity<DataType> from;
+ };
+ template< unsigned int RedIndex,
+ unsigned int GreenIndex,
+ unsigned int BlueIndex > struct uInt32Converter<
+ vigra::RGBValue< sal_uInt8,
+ RedIndex,
+ GreenIndex,
+ BlueIndex > >
+ {
+ typedef UInt32FromRgbValue<
+ vigra::RGBValue< sal_uInt8,
+ RedIndex,
+ GreenIndex,
+ BlueIndex > >
+ to;
+ typedef RgbValueFromUInt32<
+ vigra::RGBValue< sal_uInt8,
+ RedIndex,
+ GreenIndex,
+ BlueIndex > >
+ from;
+ };
+}
+
+#endif /* INCLUDED_BASEBMP_INTCONVERSION_HXX */
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */