Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / 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
- ScriptManagerProxy.cs
- SQLByteStorage.cs
- CheckPair.cs
- XmlTextReaderImplHelpers.cs
- UserInitiatedNavigationPermission.cs
- SecurityUtils.cs
- FeatureAttribute.cs
- ComProxy.cs
- ArrayList.cs
- OrderedDictionary.cs
- WebRequestModuleElement.cs
- DbDataAdapter.cs
- InputProcessorProfiles.cs
- OperationAbortedException.cs
- LogFlushAsyncResult.cs
- SerialErrors.cs
- FixedDocument.cs
- URI.cs
- AlignmentYValidation.cs
- PasswordTextNavigator.cs
- SectionRecord.cs
- TextEditorParagraphs.cs
- ObjectToIdCache.cs
- HandlerBase.cs
- Message.cs
- FontStyleConverter.cs
- ellipse.cs
- MethodCallTranslator.cs
- X509ChainElement.cs
- CrossAppDomainChannel.cs
- FreezableCollection.cs
- TcpClientChannel.cs
- HitTestParameters3D.cs
- ExpressionReplacer.cs
- BufferedStream.cs
- FrameDimension.cs
- NamespaceCollection.cs
- FastPropertyAccessor.cs
- WindowsListViewGroupSubsetLink.cs
- Registry.cs
- DataTableNewRowEvent.cs
- WsdlInspector.cs
- ResXFileRef.cs
- DtdParser.cs
- SqlDependencyUtils.cs
- GeneralTransform3D.cs
- KeyPressEvent.cs
- FileFormatException.cs
- DocumentViewerBase.cs
- ControlPaint.cs
- SoapFault.cs
- LookupNode.cs
- DynamicObjectAccessor.cs
- CallContext.cs
- FunctionNode.cs
- ListDictionary.cs
- PageBuildProvider.cs
- TextChange.cs
- DataGridViewSelectedCellCollection.cs
- TextRangeBase.cs
- BaseParser.cs
- CodeCatchClauseCollection.cs
- MarkupExtensionSerializer.cs
- Serializer.cs
- NonVisualControlAttribute.cs
- BaseParaClient.cs
- DataRowCollection.cs
- DataGridColumnCollection.cs
- AmbientProperties.cs
- Screen.cs
- NotificationContext.cs
- AsyncSerializedWorker.cs
- Int32CollectionConverter.cs
- ParallelLoopState.cs
- _FtpDataStream.cs
- NetCodeGroup.cs
- Latin1Encoding.cs
- LayoutTable.cs
- SHA1CryptoServiceProvider.cs
- CompilerGeneratedAttribute.cs
- XamlBrushSerializer.cs
- WasNotInstalledException.cs
- MailBnfHelper.cs
- RegistryPermission.cs
- login.cs
- PeerToPeerException.cs
- DataRowComparer.cs
- HttpHeaderCollection.cs
- SspiWrapper.cs
- RuntimeConfig.cs
- InternalConfirm.cs
- ListViewEditEventArgs.cs
- URLIdentityPermission.cs
- ClassicBorderDecorator.cs
- DefaultWorkflowSchedulerService.cs
- SynchronizingStream.cs
- RegexFCD.cs
- TypeInitializationException.cs
- BufferModesCollection.cs
- StrokeCollection.cs