Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / MS / Internal / Shaping / GlyphInfoList.cs / 1 / GlyphInfoList.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: GlyphInfoList class // // History: // 09/24/2004: [....]: 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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