GlyphInfoList.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / MS / Internal / Shaping / GlyphInfoList.cs / 1305600 / GlyphInfoList.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// 
//    Copyright (C) Microsoft Corporation.  All rights reserved.
//  
//
// 
// Description: GlyphInfoList class 
//
// History: 
//  09/24/2004: Garyyang: Moved GlyphInfoList class out from ShapingEngine.cs
//              into this seperate file
//
//--------------------------------------------------------------------------- 

using System; 
using System.Diagnostics; 
using System.Windows.Media.TextFormatting;
using System.Security; 
using System.Security.Permissions;
using MS.Internal;
using MS.Internal.PresentationCore;
 
namespace MS.Internal.Shaping
{ 
    ///  
    /// Glyph info list
    ///  
    /// 
    /// A bundle of several per-glyph result data of GetGlyphs API.
    /// All array members have the same number of elements. They
    /// grow and shrink at the same degree at the same time. 
    /// 
    internal class GlyphInfoList 
    { 
        internal GlyphInfoList(int capacity, int leap, bool justify)
        { 
            _glyphs         = new UshortList(capacity, leap);
            _glyphFlags     = new UshortList(capacity, leap);
            _firstChars     = new UshortList(capacity, leap);
            _ligatureCounts = new UshortList(capacity, leap); 
        }
 
        ///  
        /// Length of the current run
        ///  
        public int Length
        {
            get { return _glyphs.Length; }
        } 

        ///  
        /// Offset of current sublist in storage 
        /// 
        internal int Offset 
        {
            get { return _glyphs.Offset; }
        }
 
        /// 
        /// Validate glyph info length 
        ///  
        [Conditional("DEBUG")]
        internal void ValidateLength(int cch) 
        {
            Debug.Assert(_glyphs.Offset + _glyphs.Length == cch, "Invalid glyph length!");
        }
 
        /// 
        /// Limit range of accessing glyphinfo 
        ///  
        public void SetRange(int index, int length)
        { 
            _glyphs.SetRange(index, length);
            _glyphFlags.SetRange(index, length);
            _firstChars.SetRange(index, length);
            _ligatureCounts.SetRange(index, length); 
        }
 
        ///  
        /// Set glyph run length (use with care)
        ///  
        /// 
        /// Critical - calls critical code
        /// 
        [SecurityCritical] 
        public void SetLength(int length)
        { 
            _glyphs.Length = length; 
            _glyphFlags.Length = length;
            _firstChars.Length = length; 
            _ligatureCounts.Length = length;
        }

        public void Insert(int index, int Count) 
        {
            _glyphs.Insert(index, Count); 
            _glyphFlags.Insert(index, Count); 
            _firstChars.Insert(index, Count);
            _ligatureCounts.Insert(index, Count); 
        }

        public void Remove(int index, int Count)
        { 
            _glyphs.Remove(index, Count);
            _glyphFlags.Remove(index, Count); 
            _firstChars.Remove(index, Count); 
            _ligatureCounts.Remove(index, Count);
        } 

        public UshortList Glyphs
        {
            get { return _glyphs; } 
        }
 
        public UshortList GlyphFlags 
        {
            get { return _glyphFlags; } 
        }

        public UshortList FirstChars
        { 
            get { return _firstChars; }
        } 
 
        public UshortList LigatureCounts
        { 
            get { return _ligatureCounts; }
        }

        private UshortList  _glyphs; 
        private UshortList  _glyphFlags;
        private UshortList  _firstChars; 
        private UshortList  _ligatureCounts; 
    }
 
    [Flags]
    internal enum GlyphFlags : ushort
    {
        /**** [Bit 0-7 OpenType flags] ****/ 

        // Value 0-4 used. Value 5 - 15 Reserved 
        Unassigned              = 0x0000, 
        Base                    = 0x0001,
        Ligature                = 0x0002, 
        Mark                    = 0x0003,
        Component               = 0x0004,
        Unresolved              = 0x0007,
        GlyphTypeMask           = 0x0007, 

        // Bit 4-5 used. Bit 7 Reserved 
        Substituted             = 0x0010, 
        Positioned              = 0x0020,
        NotChanged              = 0x0000, 

        // reserved for OTLS internal use
        // inside one call
        CursiveConnected        = 0x0040, 

        //bit 7 - reserved 
 
        /**** [Bit 8-15 Avalon flags] ****/
 
        ClusterStart            = 0x0100,   // First glyph of cluster
        Diacritic               = 0x0200,   // Diacritic
        ZeroWidth               = 0x0400,   // Blank, ZWJ, ZWNJ etc, with no width
        Missing                 = 0x0800,   // Missing glyph 
        InvalidBase             = 0x1000,   // Glyph of U+25cc indicating invalid base glyph
    } 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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