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
- EventMappingSettingsCollection.cs
- WebPartConnectionsConnectVerb.cs
- FixedSOMGroup.cs
- KeyGestureValueSerializer.cs
- DynamicUpdateCommand.cs
- FrameworkContextData.cs
- DataServiceQueryProvider.cs
- XmlLoader.cs
- VScrollBar.cs
- DBCommandBuilder.cs
- ISCIIEncoding.cs
- AssemblyEvidenceFactory.cs
- ObjectAnimationBase.cs
- ADConnectionHelper.cs
- SqlRemoveConstantOrderBy.cs
- AttributeSetAction.cs
- coordinatorscratchpad.cs
- ObjectStorage.cs
- ClassGenerator.cs
- SR.cs
- XmlTextReaderImplHelpers.cs
- XMLUtil.cs
- TranslateTransform.cs
- UInt16Converter.cs
- GroupItem.cs
- NamespaceEmitter.cs
- EmbeddedMailObjectsCollection.cs
- UserUseLicenseDictionaryLoader.cs
- ClientScriptItemCollection.cs
- CreateUserWizardStep.cs
- PingOptions.cs
- SqlFormatter.cs
- DependencyPropertyDescriptor.cs
- ModuleElement.cs
- CodeSnippetStatement.cs
- BaseDataListComponentEditor.cs
- XmlSignatureManifest.cs
- FileController.cs
- RoleManagerSection.cs
- SqlUserDefinedAggregateAttribute.cs
- DeclarativeCatalogPartDesigner.cs
- EntityViewContainer.cs
- ToolBar.cs
- PlatformCulture.cs
- CodeRemoveEventStatement.cs
- nulltextcontainer.cs
- RubberbandSelector.cs
- ScriptManagerProxy.cs
- DoWorkEventArgs.cs
- SafeProcessHandle.cs
- WebSysDefaultValueAttribute.cs
- EventManager.cs
- XmlILIndex.cs
- BitmapInitialize.cs
- SmtpSection.cs
- BamlRecordWriter.cs
- ConstructorExpr.cs
- TextDecorationCollection.cs
- AlignmentXValidation.cs
- FileRegion.cs
- RowToParametersTransformer.cs
- GZipStream.cs
- XmlSerializerOperationFormatter.cs
- FileAuthorizationModule.cs
- DocumentViewerAutomationPeer.cs
- MetadataWorkspace.cs
- ClientScriptItem.cs
- VerificationException.cs
- OrthographicCamera.cs
- ServiceDeploymentInfo.cs
- SpellerError.cs
- RichTextBox.cs
- SqlConnectionHelper.cs
- EventDescriptor.cs
- StateBag.cs
- ConfigurationManagerHelperFactory.cs
- CreateRefExpr.cs
- AnchoredBlock.cs
- BuildDependencySet.cs
- _BufferOffsetSize.cs
- SafeNativeMethodsMilCoreApi.cs
- XmlDomTextWriter.cs
- MemberAccessException.cs
- LayoutDump.cs
- ExpressionBuilderCollection.cs
- CatalogPartCollection.cs
- ValidatorCollection.cs
- EventMappingSettings.cs
- WebSysDescriptionAttribute.cs
- TypeToken.cs
- ExpressionBuilder.cs
- AdornerDecorator.cs
- FormViewModeEventArgs.cs
- DebugHandleTracker.cs
- OdbcParameterCollection.cs
- AttachedAnnotationChangedEventArgs.cs
- PrinterUnitConvert.cs
- NumberSubstitution.cs
- RegexCompilationInfo.cs
- DesignTimeParseData.cs