Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / MS / Internal / PtsHost / ListMarkerLine.cs / 1305600 / ListMarkerLine.cs
//---------------------------------------------------------------------------- // // Copyright (C) Microsoft Corporation. All rights reserved. // // File: LineBase.cs // // Description: Text line formatter. // // History: // 02/07/2005 : ghermann - Split from Line.cs // //--------------------------------------------------------------------------- using System; using System.Diagnostics; using System.Collections; using System.Collections.Generic; using System.Windows; using System.Windows.Controls; using System.Windows.Documents; using System.Windows.Media; using System.Windows.Media.TextFormatting; using MS.Internal.Text; using MS.Internal.Documents; using MS.Internal.PtsHost.UnsafeNativeMethods; namespace MS.Internal.PtsHost { internal class ListMarkerLine : LineBase { ////// Constructor /// /// /// TextFormatter host /// /// /// Owner of the ListMarker /// internal ListMarkerLine(TextFormatterHost host, ListParaClient paraClient) : base(paraClient) { _host = host; } // ----------------------------------------------------------------- // // TextSource Implementation // // ----------------------------------------------------------------- #region TextSource Implementation ////// Return the text run at specified text source position. /// /// /// Offset of specified position /// internal override TextRun GetTextRun(int dcp) { return new ParagraphBreakRun(1, PTS.FSFLRES.fsflrEndOfParagraph); } ////// Return the text, as CharacterBufferRange, immediately before specified text source position. /// /// /// Offset of specified position /// internal override TextSpanGetPrecedingText(int dcp) { return new TextSpan ( 0, new CultureSpecificCharacterBufferRange(null, CharacterBufferRange.Empty) ); } /// /// Get Text effect index from specified position /// /// /// Offset of specified position /// ///internal override int GetTextEffectCharacterIndexFromTextSourceCharacterIndex(int dcp) { return dcp; } #endregion TextSource Implementation /// /// Create and format text line. /// /// /// DrawingContext for text line. /// /// /// LineProperties of text line /// /// /// Horizontal draw location /// /// /// Vertical baseline draw location /// internal void FormatAndDrawVisual(DrawingContext ctx, LineProperties lineProps, int ur, int vrBaseline) { System.Windows.Media.TextFormatting.TextLine line; bool mirror = (lineProps.FlowDirection == FlowDirection.RightToLeft); _host.Context = this; try { // Create line object line = _host.TextFormatter.FormatLine(_host, 0, 0, lineProps.FirstLineProps, null, new TextRunCache()); Point drawLocation = new Point(TextDpi.FromTextDpi(ur), TextDpi.FromTextDpi(vrBaseline) - line.Baseline); line.Draw(ctx, drawLocation, (mirror ? InvertAxes.Horizontal : InvertAxes.None)); line.Dispose(); } finally { // clear the context _host.Context = null; } } ////// Text formatter host /// private readonly TextFormatterHost _host; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // // Copyright (C) Microsoft Corporation. All rights reserved. // // File: LineBase.cs // // Description: Text line formatter. // // History: // 02/07/2005 : ghermann - Split from Line.cs // //--------------------------------------------------------------------------- using System; using System.Diagnostics; using System.Collections; using System.Collections.Generic; using System.Windows; using System.Windows.Controls; using System.Windows.Documents; using System.Windows.Media; using System.Windows.Media.TextFormatting; using MS.Internal.Text; using MS.Internal.Documents; using MS.Internal.PtsHost.UnsafeNativeMethods; namespace MS.Internal.PtsHost { internal class ListMarkerLine : LineBase { ////// Constructor /// /// /// TextFormatter host /// /// /// Owner of the ListMarker /// internal ListMarkerLine(TextFormatterHost host, ListParaClient paraClient) : base(paraClient) { _host = host; } // ----------------------------------------------------------------- // // TextSource Implementation // // ----------------------------------------------------------------- #region TextSource Implementation ////// Return the text run at specified text source position. /// /// /// Offset of specified position /// internal override TextRun GetTextRun(int dcp) { return new ParagraphBreakRun(1, PTS.FSFLRES.fsflrEndOfParagraph); } ////// Return the text, as CharacterBufferRange, immediately before specified text source position. /// /// /// Offset of specified position /// internal override TextSpanGetPrecedingText(int dcp) { return new TextSpan ( 0, new CultureSpecificCharacterBufferRange(null, CharacterBufferRange.Empty) ); } /// /// Get Text effect index from specified position /// /// /// Offset of specified position /// ///internal override int GetTextEffectCharacterIndexFromTextSourceCharacterIndex(int dcp) { return dcp; } #endregion TextSource Implementation /// /// Create and format text line. /// /// /// DrawingContext for text line. /// /// /// LineProperties of text line /// /// /// Horizontal draw location /// /// /// Vertical baseline draw location /// internal void FormatAndDrawVisual(DrawingContext ctx, LineProperties lineProps, int ur, int vrBaseline) { System.Windows.Media.TextFormatting.TextLine line; bool mirror = (lineProps.FlowDirection == FlowDirection.RightToLeft); _host.Context = this; try { // Create line object line = _host.TextFormatter.FormatLine(_host, 0, 0, lineProps.FirstLineProps, null, new TextRunCache()); Point drawLocation = new Point(TextDpi.FromTextDpi(ur), TextDpi.FromTextDpi(vrBaseline) - line.Baseline); line.Draw(ctx, drawLocation, (mirror ? InvertAxes.Horizontal : InvertAxes.None)); line.Dispose(); } finally { // clear the context _host.Context = null; } } ////// Text formatter host /// private readonly TextFormatterHost _host; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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