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/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / MS / Internal / Shaping / CharacterShapingProperties.cs / 1 / CharacterShapingProperties.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: CharacterShapingProperties class // // History: // 10/26/2004: [....] Created the file // 1/25/2004: [....] Move it to internal namespace // //--------------------------------------------------------------------------- using System.Runtime.InteropServices; namespace MS.Internal.Shaping { ////// Properties per character /// [StructLayout(LayoutKind.Sequential)] internal struct CharacterShapingProperties { ////// Constructor /// /// reserved bits used by shaping engine /// flag indicating whether the code point can be glyphed alone internal CharacterShapingProperties(byte engineReserved, bool canGlyphAlone) { _value = (canGlyphAlone ? CanGlyphAloneFlag : (ushort) 0); _value |= engineReserved; } ////// Get or Set CanGlyphAlone flag for the charactrer /// ///internal bool CanGlyphAlone { get { return (_value & CanGlyphAloneFlag) != 0; } set { if (value) { _value |= CanGlyphAloneFlag; } else { _value &= (CanGlyphAloneFlag ^ 0xFFFF); } } } /// /// Get or Set bits reserved for shaping engine use /// ///internal byte EngineReserved { get { return (byte)(_value & EngineReservedValueMask); } set { _value = (ushort)((_value & (EngineReservedValueMask ^ 0xFFFF)) | value); } } /// /// Compares two CharacterShapingProperties for equality. /// ///Returns true if the arguments have identical properties, false if not. public static bool operator ==( CharacterShapingProperties left, CharacterShapingProperties right) { return left._value == right._value; } ////// Compares two CharacterShapingProperties for inequality. /// ///Returns true if the arguments are not equal, false if they are equal. public static bool operator !=( CharacterShapingProperties left, CharacterShapingProperties right) { return !(left == right); } ////// Compares the specified object with this. /// ///Returns true if the specified object is a CharacterShapingProperties with the same /// value as this object. public override bool Equals(object o) { if (o != null && o is CharacterShapingProperties) { return (CharacterShapingProperties)o == this; } else { return false; } } ////// Returns a hash code based on the property flags. /// public override int GetHashCode() { return _value; } private ushort _value; // CanGlyphAloneFlag is store at the 9th bit private const ushort CanGlyphAloneFlag = 0x0100; private const ushort EngineReservedValueMask = 0x00FF; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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