Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Core / CSharp / MS / Internal / FontCache / CachedFontFace.cs / 1 / CachedFontFace.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: The CachedFontFace class // // History: // 03/04/2004 : mleonov - Cache layout and interface changes for font enumeration. // //--------------------------------------------------------------------------- using System; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Diagnostics; using System.Globalization; using System.IO; using System.Runtime.InteropServices; using System.Security; using System.Security.Permissions; using System.Windows; using System.Windows.Media; using MS.Win32; using MS.Utility; using MS.Internal; using MS.Internal.FontFace; namespace MS.Internal.FontCache { ////// This structure exists because we need a common wrapper for enumeration, but we can't use original cache structures: /// 1. C# doesn't allow IEnumerable/IEnumerator on pointer. /// 2. The cache structures don't inherit from base class. /// internal struct CachedFontFace { private FamilyCollection _familyCollection; ////// Critical: This is a pointer variable and hence not safe to expose. /// [SecurityCritical] private unsafe FamilyCollection.CachedFace * _face; ////// Critical: Determines value of CheckedPointer.Size, which is used for bounds checking. /// [SecurityCritical] private unsafe int _sizeInBytes; ////// Critical: This accesses a pointer and is unsafe; the sizeInBytes is critical because it /// is used for bounds checking (via CheckedPointer) /// [SecurityCritical] public unsafe CachedFontFace(FamilyCollection familyCollection, FamilyCollection.CachedFace* face, int sizeInBytes) { _familyCollection = familyCollection; _face = face; _sizeInBytes = sizeInBytes; } ////// Critical: This accesses a pointer and is unsafe /// TreatAsSafe: This information is ok to return /// public bool IsNull { [SecurityCritical,SecurityTreatAsSafe] get { unsafe { return _face == null; } } } ////// Critical: This contructs a null object /// TreatAsSafe: This is ok to execute /// public static CachedFontFace Null { [SecurityCritical,SecurityTreatAsSafe] get { unsafe { return new CachedFontFace(null, null, 0); } } } ////// Critical: This accesses unsafe code and returns a pointer /// public unsafe FamilyCollection.CachedPhysicalFace* CachedPhysicalFace { [SecurityCritical] get { return (FamilyCollection.CachedPhysicalFace *)_face; } } ////// Critical: This accesses unsafe code and returns a pointer /// public unsafe FamilyCollection.CachedCompositeFace* CompositeFace { [SecurityCritical] get { return (FamilyCollection.CachedCompositeFace *)_face; } } ////// Critical: Accesses critical fields and constructs a CheckedPointer which is a critical operation. /// TreatAsSafe: The fields used to construct the CheckedPointer are marked critical and CheckedPointer /// itself is safe to expose. /// public CheckedPointer CheckedPointer { [SecurityCritical, SecurityTreatAsSafe] get { unsafe { return new CheckedPointer(_face, _sizeInBytes); } } } ////// Critical: This accesses a pointer and is unsafe /// TreatAsSafe: This information is ok to return /// public FontStyle Style { [SecurityCritical,SecurityTreatAsSafe] get { unsafe { return _face->style; } } } ////// Critical: This accesses a pointer and is unsafe /// TreatAsSafe: This information is ok to return /// public FontWeight Weight { [SecurityCritical,SecurityTreatAsSafe] get { unsafe { return _face->weight; } } } ////// Critical: This accesses a pointer and is unsafe /// TreatAsSafe: This information is ok to return /// public FontStretch Stretch { [SecurityCritical,SecurityTreatAsSafe] get { unsafe { return _face->stretch; } } } ////// Matching style /// public MatchingStyle MatchingStyle { get { return new MatchingStyle(Style, Weight, Stretch); } } ////// Critical - as this accesses unsafe pointers and returns GlyphTypeface created from internal constructor /// which exposes windows font information. /// Safe - as this doesn't allow you to create a GlyphTypeface object for a specific /// font and thus won't allow you to figure what fonts might be installed on /// the machine. /// [SecurityCritical, SecurityTreatAsSafe] public GlyphTypeface CreateGlyphTypeface() { unsafe { return new GlyphTypeface( _familyCollection.GetFontUri(CachedPhysicalFace), CachedPhysicalFace->styleSimulations, /* fromPublic = */ false ); } } } } // 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. // // // // Description: The CachedFontFace class // // History: // 03/04/2004 : mleonov - Cache layout and interface changes for font enumeration. // //--------------------------------------------------------------------------- using System; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Diagnostics; using System.Globalization; using System.IO; using System.Runtime.InteropServices; using System.Security; using System.Security.Permissions; using System.Windows; using System.Windows.Media; using MS.Win32; using MS.Utility; using MS.Internal; using MS.Internal.FontFace; namespace MS.Internal.FontCache { ////// This structure exists because we need a common wrapper for enumeration, but we can't use original cache structures: /// 1. C# doesn't allow IEnumerable/IEnumerator on pointer. /// 2. The cache structures don't inherit from base class. /// internal struct CachedFontFace { private FamilyCollection _familyCollection; ////// Critical: This is a pointer variable and hence not safe to expose. /// [SecurityCritical] private unsafe FamilyCollection.CachedFace * _face; ////// Critical: Determines value of CheckedPointer.Size, which is used for bounds checking. /// [SecurityCritical] private unsafe int _sizeInBytes; ////// Critical: This accesses a pointer and is unsafe; the sizeInBytes is critical because it /// is used for bounds checking (via CheckedPointer) /// [SecurityCritical] public unsafe CachedFontFace(FamilyCollection familyCollection, FamilyCollection.CachedFace* face, int sizeInBytes) { _familyCollection = familyCollection; _face = face; _sizeInBytes = sizeInBytes; } ////// Critical: This accesses a pointer and is unsafe /// TreatAsSafe: This information is ok to return /// public bool IsNull { [SecurityCritical,SecurityTreatAsSafe] get { unsafe { return _face == null; } } } ////// Critical: This contructs a null object /// TreatAsSafe: This is ok to execute /// public static CachedFontFace Null { [SecurityCritical,SecurityTreatAsSafe] get { unsafe { return new CachedFontFace(null, null, 0); } } } ////// Critical: This accesses unsafe code and returns a pointer /// public unsafe FamilyCollection.CachedPhysicalFace* CachedPhysicalFace { [SecurityCritical] get { return (FamilyCollection.CachedPhysicalFace *)_face; } } ////// Critical: This accesses unsafe code and returns a pointer /// public unsafe FamilyCollection.CachedCompositeFace* CompositeFace { [SecurityCritical] get { return (FamilyCollection.CachedCompositeFace *)_face; } } ////// Critical: Accesses critical fields and constructs a CheckedPointer which is a critical operation. /// TreatAsSafe: The fields used to construct the CheckedPointer are marked critical and CheckedPointer /// itself is safe to expose. /// public CheckedPointer CheckedPointer { [SecurityCritical, SecurityTreatAsSafe] get { unsafe { return new CheckedPointer(_face, _sizeInBytes); } } } ////// Critical: This accesses a pointer and is unsafe /// TreatAsSafe: This information is ok to return /// public FontStyle Style { [SecurityCritical,SecurityTreatAsSafe] get { unsafe { return _face->style; } } } ////// Critical: This accesses a pointer and is unsafe /// TreatAsSafe: This information is ok to return /// public FontWeight Weight { [SecurityCritical,SecurityTreatAsSafe] get { unsafe { return _face->weight; } } } ////// Critical: This accesses a pointer and is unsafe /// TreatAsSafe: This information is ok to return /// public FontStretch Stretch { [SecurityCritical,SecurityTreatAsSafe] get { unsafe { return _face->stretch; } } } ////// Matching style /// public MatchingStyle MatchingStyle { get { return new MatchingStyle(Style, Weight, Stretch); } } ////// Critical - as this accesses unsafe pointers and returns GlyphTypeface created from internal constructor /// which exposes windows font information. /// Safe - as this doesn't allow you to create a GlyphTypeface object for a specific /// font and thus won't allow you to figure what fonts might be installed on /// the machine. /// [SecurityCritical, SecurityTreatAsSafe] public GlyphTypeface CreateGlyphTypeface() { unsafe { return new GlyphTypeface( _familyCollection.GetFontUri(CachedPhysicalFace), CachedPhysicalFace->styleSimulations, /* fromPublic = */ false ); } } } } // 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
- NonVisualControlAttribute.cs
- FrameworkEventSource.cs
- ClipboardData.cs
- DataViewManager.cs
- Convert.cs
- XmlSchemaSearchPattern.cs
- FixedFindEngine.cs
- LeaseManager.cs
- ListViewCancelEventArgs.cs
- ErrorRuntimeConfig.cs
- SafeArchiveContext.cs
- EasingKeyFrames.cs
- CodePageEncoding.cs
- GlobalizationSection.cs
- XXXInfos.cs
- StringSource.cs
- DbXmlEnabledProviderManifest.cs
- Assert.cs
- Journal.cs
- PropertyGridDesigner.cs
- ListViewItemMouseHoverEvent.cs
- EncodingFallbackAwareXmlTextWriter.cs
- AutomationPatternInfo.cs
- OdbcConnectionFactory.cs
- CqlParser.cs
- QueryCacheManager.cs
- BinaryReader.cs
- DataGridViewUtilities.cs
- BinaryConverter.cs
- BaseTransportHeaders.cs
- ResponseStream.cs
- RuntimeConfigLKG.cs
- ExtensionSurface.cs
- BinaryCommonClasses.cs
- TableStyle.cs
- TextDecoration.cs
- XmlSerializerVersionAttribute.cs
- AdPostCacheSubstitution.cs
- CollectionExtensions.cs
- DesignBindingEditor.cs
- HandlerBase.cs
- ReadOnlyDictionary.cs
- SemanticBasicElement.cs
- EnumType.cs
- CharEnumerator.cs
- MarkupCompiler.cs
- iisPickupDirectory.cs
- Validator.cs
- _ListenerAsyncResult.cs
- FormatConvertedBitmap.cs
- ValidationRuleCollection.cs
- XmlCompatibilityReader.cs
- PngBitmapDecoder.cs
- FixedFindEngine.cs
- OutOfMemoryException.cs
- LabelDesigner.cs
- HtmlWindowCollection.cs
- SqlException.cs
- CommandConverter.cs
- COM2Properties.cs
- HMACSHA384.cs
- KeyGestureConverter.cs
- ClonableStack.cs
- SectionInformation.cs
- BaseCollection.cs
- Button.cs
- XmlSchemaType.cs
- SamlAttribute.cs
- TypeConverterAttribute.cs
- PersonalizationStateInfo.cs
- CommandEventArgs.cs
- HuffCodec.cs
- QilPatternVisitor.cs
- ObjectMemberMapping.cs
- PartManifestEntry.cs
- UpdateException.cs
- DataGridCheckBoxColumn.cs
- AccessDataSourceView.cs
- Animatable.cs
- Debug.cs
- StandardMenuStripVerb.cs
- SettingsPropertyCollection.cs
- CommentAction.cs
- MasterPage.cs
- FontCacheLogic.cs
- CryptoHelper.cs
- ConfigurationLockCollection.cs
- TreeViewEvent.cs
- MSG.cs
- CommandEventArgs.cs
- SQLStringStorage.cs
- RectangleGeometry.cs
- CodeThrowExceptionStatement.cs
- UncommonField.cs
- ImageSourceConverter.cs
- DataGridViewRowCancelEventArgs.cs
- UserNameServiceElement.cs
- PropertyNames.cs
- IIS7UserPrincipal.cs
- WebPartVerb.cs