Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / wpf / src / Core / CSharp / MS / Internal / Shaping / DigitShape.cs / 1 / DigitShape.cs
//+------------------------------------------------------------------------ // // Microsoft Windows Client Platform // Copyright (C) Microsoft Corporation, 2001 // // File: DigitShape.cs // // Contents: DIgits shaping engine // // Contact: nbeal // // Created: 10-27-2005 // //----------------------------------------------------------------------- using System; using System.Collections; using System.Collections.Generic; using System.Diagnostics; using System.Globalization; using MS.Internal.FontCache; using MS.Internal.FontFace; using MS.Internal.TextFormatting; using System.Security; using System.Security.Permissions; using MS.Internal.PresentationCore; using System.Windows.Media; using System.Windows.Media.TextFormatting; namespace MS.Internal.Shaping { ////// Default implementation of digit shape /// ////// All items containing digit come here. The shape of the digit is /// dictated by the specified language. /// internal class DigitShape : BaseShape { // // required positioning features // protected static readonly Feature[] _digitPositioningFeatures = new Feature[] { new Feature(0,ushort.MaxValue,(uint)FeatureTags.Kerning,1) }; internal DigitShape() { } public override ScriptTags[] SupportedScripts { get { return new ScriptTags[]{ Script.TagDigit }; } } ////// DigitShape.GetGlyphs /// helper for the IShaper method. The function call is used to /// shape the Latin unicode characters. /// /// shaping currentRun /// Text item ///number of glyphs ////// Critical - calls critical code, uses unsafe accessors /// [SecurityCritical] unsafe protected override int GetGlyphs ( ref ShapingWorkspace currentRun, Item item ) { DigitMap digitMap = new DigitMap(item.DigitCulture); char currChar; while (currentRun.GetNextChar (out currChar)) { char digitChar = (char)digitMap[currChar]; currentRun.SetGlyphPropertiesUsingChar( CharShapeInfo.IsStartOfCluster, digitChar); // If no glyph, perhaps we have a second choice. if (currentRun.CurrentGlyph == 0) { digitChar = (char)DigitMap.GetFallbackCharacter(digitChar); if (digitChar != 0) { currentRun.CurrentGlyph = currentRun.CharConverter.ToGlyph(digitChar); } } } return currentRun.GlyphsCount; } ////// DigitShape.InitializeFontClient -IShaper methods helper. /// ////// This function is called from GetGlyphs and GetGlyphPlacements /// (IShaper methods) to do the necessary shaper initialization /// ////// Critical - this method calls critical methods. /// Safe - this method doesn't expose anything unsafe to the world. /// [SecurityCritical, SecurityTreatAsSafe] protected override ShaperFontClient InitializeFontClient ( Item item, CultureInfo culture, GlyphTypeface fontFace, OpenTypeTags featureType, object shapeFontInfo ) { Item digitItem = item; ShaperFontClient fontClient = shapeFontInfo as ShaperFontClient; if ( fontClient != null ) { ScriptTags scriptTag = ScriptTags.Latin; // use Latin script for digits if (OpenTypeLayout.FindScript(fontClient,(uint)scriptTag) != TagInfoFlags.None) { fontClient.IsScriptSupportedByFont = true; digitItem = new Item(ScriptID.Latin, item.Flags); digitItem.DigitCulture = item.DigitCulture; } } return base.InitializeFontClient ( digitItem, culture, fontFace, featureType, fontClient ); } ////// DigitShape.OnLoadFont - IShapingEngine method override. /// ////// We override the base implementation because this shaper /// has work to do regardless of the script. /// /// Script of interest. /// Font face being loaded /// always returns null ///True if font supports script. ////// Critical - This method reads into raw font table bits. /// Safe - This method doesn't expose any critical data. /// [SecurityCritical, SecurityTreatAsSafe] public override bool OnLoadFont( ScriptTags scriptTag, GlyphTypeface fontFace, out object shapeState ) { // create the font client for this font/script ShaperFontClient fontClient = new ShaperFontClient( fontFace ); // Now check if script support does exist in font if (OpenTypeLayout.FindScript(fontClient,(uint)scriptTag) != TagInfoFlags.None) { fontClient.IsScriptSupportedByFont = true; } shapeState = fontClient; return true; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //+------------------------------------------------------------------------ // // Microsoft Windows Client Platform // Copyright (C) Microsoft Corporation, 2001 // // File: DigitShape.cs // // Contents: DIgits shaping engine // // Contact: nbeal // // Created: 10-27-2005 // //----------------------------------------------------------------------- using System; using System.Collections; using System.Collections.Generic; using System.Diagnostics; using System.Globalization; using MS.Internal.FontCache; using MS.Internal.FontFace; using MS.Internal.TextFormatting; using System.Security; using System.Security.Permissions; using MS.Internal.PresentationCore; using System.Windows.Media; using System.Windows.Media.TextFormatting; namespace MS.Internal.Shaping { ////// Default implementation of digit shape /// ////// All items containing digit come here. The shape of the digit is /// dictated by the specified language. /// internal class DigitShape : BaseShape { // // required positioning features // protected static readonly Feature[] _digitPositioningFeatures = new Feature[] { new Feature(0,ushort.MaxValue,(uint)FeatureTags.Kerning,1) }; internal DigitShape() { } public override ScriptTags[] SupportedScripts { get { return new ScriptTags[]{ Script.TagDigit }; } } ////// DigitShape.GetGlyphs /// helper for the IShaper method. The function call is used to /// shape the Latin unicode characters. /// /// shaping currentRun /// Text item ///number of glyphs ////// Critical - calls critical code, uses unsafe accessors /// [SecurityCritical] unsafe protected override int GetGlyphs ( ref ShapingWorkspace currentRun, Item item ) { DigitMap digitMap = new DigitMap(item.DigitCulture); char currChar; while (currentRun.GetNextChar (out currChar)) { char digitChar = (char)digitMap[currChar]; currentRun.SetGlyphPropertiesUsingChar( CharShapeInfo.IsStartOfCluster, digitChar); // If no glyph, perhaps we have a second choice. if (currentRun.CurrentGlyph == 0) { digitChar = (char)DigitMap.GetFallbackCharacter(digitChar); if (digitChar != 0) { currentRun.CurrentGlyph = currentRun.CharConverter.ToGlyph(digitChar); } } } return currentRun.GlyphsCount; } ////// DigitShape.InitializeFontClient -IShaper methods helper. /// ////// This function is called from GetGlyphs and GetGlyphPlacements /// (IShaper methods) to do the necessary shaper initialization /// ////// Critical - this method calls critical methods. /// Safe - this method doesn't expose anything unsafe to the world. /// [SecurityCritical, SecurityTreatAsSafe] protected override ShaperFontClient InitializeFontClient ( Item item, CultureInfo culture, GlyphTypeface fontFace, OpenTypeTags featureType, object shapeFontInfo ) { Item digitItem = item; ShaperFontClient fontClient = shapeFontInfo as ShaperFontClient; if ( fontClient != null ) { ScriptTags scriptTag = ScriptTags.Latin; // use Latin script for digits if (OpenTypeLayout.FindScript(fontClient,(uint)scriptTag) != TagInfoFlags.None) { fontClient.IsScriptSupportedByFont = true; digitItem = new Item(ScriptID.Latin, item.Flags); digitItem.DigitCulture = item.DigitCulture; } } return base.InitializeFontClient ( digitItem, culture, fontFace, featureType, fontClient ); } ////// DigitShape.OnLoadFont - IShapingEngine method override. /// ////// We override the base implementation because this shaper /// has work to do regardless of the script. /// /// Script of interest. /// Font face being loaded /// always returns null ///True if font supports script. ////// Critical - This method reads into raw font table bits. /// Safe - This method doesn't expose any critical data. /// [SecurityCritical, SecurityTreatAsSafe] public override bool OnLoadFont( ScriptTags scriptTag, GlyphTypeface fontFace, out object shapeState ) { // create the font client for this font/script ShaperFontClient fontClient = new ShaperFontClient( fontFace ); // Now check if script support does exist in font if (OpenTypeLayout.FindScript(fontClient,(uint)scriptTag) != TagInfoFlags.None) { fontClient.IsScriptSupportedByFont = true; } shapeState = fontClient; return true; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- EntitySqlQueryCacheKey.cs
- TaskSchedulerException.cs
- ComponentDispatcher.cs
- Converter.cs
- CompressionTransform.cs
- ErrorWrapper.cs
- DetailsViewCommandEventArgs.cs
- XamlStackWriter.cs
- Int32Collection.cs
- CommentAction.cs
- XsdBuildProvider.cs
- SafeArrayRankMismatchException.cs
- SubqueryRules.cs
- ProxySimple.cs
- QilLiteral.cs
- ReturnType.cs
- CompilationSection.cs
- BitArray.cs
- FormViewPageEventArgs.cs
- ListParagraph.cs
- versioninfo.cs
- PtsContext.cs
- IpcManager.cs
- InvalidOperationException.cs
- PageHandlerFactory.cs
- ToolStripItemCollection.cs
- GlyphInfoList.cs
- BamlRecordReader.cs
- _StreamFramer.cs
- AttachedPropertyInfo.cs
- LocalFileSettingsProvider.cs
- SystemIcons.cs
- TreeNode.cs
- BitArray.cs
- InputReport.cs
- SoapDocumentServiceAttribute.cs
- MessageHeaderInfoTraceRecord.cs
- PagedDataSource.cs
- DateTimeConverter2.cs
- SecurityContextCookieSerializer.cs
- TraceHandler.cs
- SerializationSectionGroup.cs
- ConstructorExpr.cs
- XmlAutoDetectWriter.cs
- SqlDataSourceStatusEventArgs.cs
- ValueProviderWrapper.cs
- WorkflowViewManager.cs
- Brush.cs
- MembershipValidatePasswordEventArgs.cs
- PriorityQueue.cs
- FileDialogCustomPlace.cs
- LoginAutoFormat.cs
- InterleavedZipPartStream.cs
- VerificationAttribute.cs
- mediapermission.cs
- BeginEvent.cs
- HtmlInputCheckBox.cs
- AppearanceEditorPart.cs
- XmlElement.cs
- AppDomain.cs
- SettingsPropertyCollection.cs
- ViewEvent.cs
- TextEditorLists.cs
- TreeNodeStyleCollection.cs
- UiaCoreApi.cs
- PartitionResolver.cs
- CrossAppDomainChannel.cs
- EntityDataSourceContextDisposingEventArgs.cs
- RandomDelayQueuedSendsAsyncResult.cs
- SafeSecurityHelper.cs
- XmlQueryType.cs
- CRYPTPROTECT_PROMPTSTRUCT.cs
- SmtpSection.cs
- FileSystemEventArgs.cs
- TypePropertyEditor.cs
- AncestorChangedEventArgs.cs
- MetadataArtifactLoaderFile.cs
- Stream.cs
- WpfWebRequestHelper.cs
- JournalEntryStack.cs
- SizeFConverter.cs
- PtsHelper.cs
- LocalBuilder.cs
- PipelineModuleStepContainer.cs
- StringBuilder.cs
- SqlUnionizer.cs
- XmlSequenceWriter.cs
- ObfuscationAttribute.cs
- WaitForChangedResult.cs
- SMSvcHost.cs
- ExcludeFromCodeCoverageAttribute.cs
- DocumentGridContextMenu.cs
- XamlClipboardData.cs
- ObjectDataSourceSelectingEventArgs.cs
- TableLayoutColumnStyleCollection.cs
- TextParagraphView.cs
- DataServiceContext.cs
- TypePropertyEditor.cs
- RefExpr.cs
- WizardPanel.cs