Adding upstream version 4:24.2.0.upstream/4%24.2.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 122 insertions, 0 deletions

diff --git a/include/tools/fract.hxx b/include/tools/fract.hxx
new file mode 100644
index 0000000000..e1305ca8a8
--- /dev/null
+++ b/include/tools/fract.hxx
@@ -0,0 +1,122 @@
+/* -*- 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 .
+ */
+#ifndef INCLUDED_TOOLS_FRACT_HXX
+#define INCLUDED_TOOLS_FRACT_HXX
+
+#include <sal/types.h>
+#include <tools/toolsdllapi.h>
+#include <tools/long.hxx>
+#include <ostream>
+#include <type_traits>
+
+class SvStream;
+
+class SAL_WARN_UNUSED TOOLS_DLLPUBLIC Fraction final
+{
+    /// these two fields form a boost::rational, but I didn't want to put more boost headers into the global space
+    sal_Int32       mnNumerator = 0;
+    sal_Int32       mnDenominator = 1;
+    bool            mbValid = true;
+public:
+                    Fraction() = default;
+                    Fraction( const Fraction & rFrac ) = default;
+                    Fraction( Fraction && rFrac ) = default;
+    explicit        Fraction( double dVal );
+                    Fraction( double nNum, double nDen );
+                    Fraction( sal_Int64 nNum, sal_Int64 nDen );
+                    // just to prevent ambiguity between the sal_Int64 and double constructors
+                    template<typename T1, typename T2> Fraction(
+                        T1 nNum, T2 nDen,
+                        typename std::enable_if<std::is_integral<T1>::value && std::is_integral<T2>::value, int>::type = 0)
+                        : Fraction( sal_Int64(nNum), sal_Int64(nDen) ) {}
+
+    bool            IsValid() const { return mbValid; }
+
+    sal_Int32       GetNumerator() const;
+    sal_Int32       GetDenominator() const;
+
+    explicit operator sal_Int32() const;
+#if SAL_TYPES_SIZEOFPOINTER == 8
+    explicit operator ::tools::Long() const { return operator sal_Int32(); }
+#endif
+    explicit operator double() const;
+
+    Fraction&       operator=( const Fraction& rfrFrac ) = default;
+    Fraction&       operator=( Fraction&& rfrFrac ) = default;
+    Fraction&       operator=( double v ) { return operator=(Fraction(v)); }
+
+    Fraction&       operator+=( const Fraction& rfrFrac );
+    Fraction&       operator-=( const Fraction& rfrFrac );
+    Fraction&       operator*=( const Fraction& rfrFrac );
+    Fraction&       operator/=( const Fraction& rfrFrac );
+    Fraction&       operator+=( double v ) { return operator+=(Fraction(v)); }
+    Fraction&       operator-=( double v ) { return operator-=(Fraction(v)); }
+    Fraction&       operator*=( double v ) { return operator*=(Fraction(v)); }
+    Fraction&       operator/=( double v ) { return operator/=(Fraction(v)); }
+
+    void            ReduceInaccurate( unsigned nSignificantBits );
+
+    /// Multiply the two fractions represented here and reduce inaccuracy to 32-bits, used by vcl
+    static Fraction MakeFraction(tools::Long nN1, tools::Long nN2, tools::Long nD1, tools::Long nD2);
+
+    // Compute value usable as hash.
+    size_t GetHashValue() const;
+
+    TOOLS_DLLPUBLIC friend Fraction operator+( const Fraction& rVal1, const Fraction& rVal2 );
+    TOOLS_DLLPUBLIC friend Fraction operator-( const Fraction& rVal1, const Fraction& rVal2 );
+    TOOLS_DLLPUBLIC friend Fraction operator*( const Fraction& rVal1, const Fraction& rVal2 );
+    TOOLS_DLLPUBLIC friend Fraction operator/( const Fraction& rVal1, const Fraction& rVal2 );
+
+    TOOLS_DLLPUBLIC friend bool operator==( const Fraction& rVal1, const Fraction& rVal2 );
+    TOOLS_DLLPUBLIC friend bool operator!=( const Fraction& rVal1, const Fraction& rVal2 );
+    TOOLS_DLLPUBLIC friend bool operator< ( const Fraction& rVal1, const Fraction& rVal2 );
+    TOOLS_DLLPUBLIC friend bool operator> ( const Fraction& rVal1, const Fraction& rVal2 );
+    TOOLS_DLLPUBLIC friend bool operator<=( const Fraction& rVal1, const Fraction& rVal2 );
+    TOOLS_DLLPUBLIC friend bool operator>=( const Fraction& rVal1, const Fraction& rVal2 );
+};
+
+TOOLS_DLLPUBLIC Fraction operator+( const Fraction& rVal1, const Fraction& rVal2 );
+TOOLS_DLLPUBLIC Fraction operator-( const Fraction& rVal1, const Fraction& rVal2 );
+TOOLS_DLLPUBLIC Fraction operator*( const Fraction& rVal1, const Fraction& rVal2 );
+TOOLS_DLLPUBLIC Fraction operator/( const Fraction& rVal1, const Fraction& rVal2 );
+TOOLS_DLLPUBLIC bool operator !=( const Fraction& rVal1, const Fraction& rVal2 );
+TOOLS_DLLPUBLIC bool operator <=( const Fraction& rVal1, const Fraction& rVal2 );
+TOOLS_DLLPUBLIC bool operator >=( const Fraction& rVal1, const Fraction& rVal2 );
+
+inline Fraction operator+( double v1, const Fraction& rVal2 ) { return Fraction(v1) + rVal2; }
+inline Fraction operator-( double v1, const Fraction& rVal2 ) { return Fraction(v1) - rVal2; }
+inline Fraction operator*( double v1, const Fraction& rVal2 ) { return Fraction(v1) * rVal2; }
+inline Fraction operator/( double v1, const Fraction& rVal2 ) { return Fraction(v1) / rVal2; }
+
+inline Fraction operator+( const Fraction& rVal1, double v2 ) { return rVal1 + Fraction(v2); }
+inline Fraction operator-( const Fraction& rVal1, double v2 ) { return rVal1 - Fraction(v2); }
+inline Fraction operator*( const Fraction& rVal1, double v2 ) { return rVal1 * Fraction(v2); }
+inline Fraction operator/( const Fraction& rVal1, double v2 ) { return rVal1 / Fraction(v2); }
+
+template<typename charT, typename traits>
+inline std::basic_ostream<charT, traits> & operator <<(
+    std::basic_ostream<charT, traits> & rStream, const Fraction& rFraction)
+{
+    rStream << "(" << rFraction.GetNumerator() << "/" << rFraction.GetDenominator() << ")";
+    return rStream;
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */