Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / FontStretchConverter.cs / 1305600 / FontStretchConverter.cs
//---------------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // Description: FontStretch type converter. // // History: // 01/25/2005 mleonov - Created. // //--------------------------------------------------------------------------- using System; using System.IO; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Reflection; using MS.Internal; using System.Windows.Media; using System.Text; using System.Collections; using System.Globalization; using System.Runtime.InteropServices; using System.Security; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows { ////// FontStretchConverter class parses a font stretch string. /// public sealed class FontStretchConverter : TypeConverter { ////// CanConvertFrom /// public override bool CanConvertFrom(ITypeDescriptorContext td, Type t) { if (t == typeof(string)) { return true; } else { return false; } } ////// TypeConverter method override. /// /// ITypeDescriptorContext /// Type to convert to ///true if conversion is possible public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) { if (destinationType == typeof(InstanceDescriptor) || destinationType == typeof(string)) { return true; } return base.CanConvertTo(context, destinationType); } ////// ConvertFrom - attempt to convert to a FontStretch from the given object /// ////// A NotSupportedException is thrown if the example object is null or is not a valid type /// which can be converted to a FontStretch. /// public override object ConvertFrom(ITypeDescriptorContext td, CultureInfo ci, object value) { if (null == value) { throw GetConvertFromException(value); } String s = value as string; if (null == s) { throw new ArgumentException(SR.Get(SRID.General_BadType, "ConvertFrom"), "value"); } FontStretch fontStretch = new FontStretch(); if (!FontStretches.FontStretchStringToKnownStretch(s, ci, ref fontStretch)) throw new FormatException(SR.Get(SRID.Parsers_IllegalToken)); return fontStretch; } ////// TypeConverter method implementation. /// ////// An NotSupportedException is thrown if the example object is null or is not a FontStretch, /// or if the destinationType isn't one of the valid destination types. /// /// ITypeDescriptorContext /// current culture (see CLR specs) /// value to convert from /// Type to convert to ///converted value ////// Critical: calls InstanceDescriptor ctor which LinkDemands /// PublicOK: can only make an InstanceDescriptor for FontStretch.FromOpenTypeStretch, not an arbitrary class/method /// [SecurityCritical] public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) { if (destinationType != null && value is FontStretch) { if (destinationType == typeof(InstanceDescriptor)) { MethodInfo mi = typeof(FontStretch).GetMethod("FromOpenTypeStretch", new Type[]{typeof(int)}); FontStretch c = (FontStretch)value; return new InstanceDescriptor(mi, new object[]{c.ToOpenTypeStretch()}); } else if (destinationType == typeof(string)) { FontStretch c = (FontStretch)value; return ((IFormattable)c).ToString(null, culture); } } // Pass unhandled cases to base class (which will throw exceptions for null value or destinationType.) return base.ConvertTo(context, culture, value, destinationType); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ComplusTypeValidator.cs
- EventHandlersStore.cs
- ToolStripPanelRenderEventArgs.cs
- TraceListener.cs
- ReachSerializerAsync.cs
- PrintDialogException.cs
- OLEDB_Util.cs
- SmtpReplyReaderFactory.cs
- BlurEffect.cs
- StringFreezingAttribute.cs
- HttpHandlerActionCollection.cs
- XPathChildIterator.cs
- UpdateTranslator.cs
- TextServicesPropertyRanges.cs
- SynchronizationFilter.cs
- Int64.cs
- PointLight.cs
- BitmapEffectDrawingContextState.cs
- PerformanceCounter.cs
- NotFiniteNumberException.cs
- StateMachineHelpers.cs
- ConfigXmlWhitespace.cs
- DataFormats.cs
- XDeferredAxisSource.cs
- MediaSystem.cs
- MbpInfo.cs
- OrderByExpression.cs
- XmlParserContext.cs
- FontSourceCollection.cs
- Int32Collection.cs
- DynamicResourceExtensionConverter.cs
- IdentitySection.cs
- PathSegmentCollection.cs
- ProviderSettingsCollection.cs
- ToolStripContentPanel.cs
- FileVersionInfo.cs
- OleDbRowUpdatedEvent.cs
- HTTP_SERVICE_CONFIG_URLACL_PARAM.cs
- GradientStopCollection.cs
- IIS7WorkerRequest.cs
- PenThreadPool.cs
- DataReaderContainer.cs
- HttpListener.cs
- ResXFileRef.cs
- ListDesigner.cs
- ThemeConfigurationDialog.cs
- X509ChainElement.cs
- QilLiteral.cs
- SqlDataSourceView.cs
- XmlTextWriter.cs
- CollectionConverter.cs
- ToolBar.cs
- SecureStringHasher.cs
- XmlIlVisitor.cs
- OleDbRowUpdatingEvent.cs
- IxmlLineInfo.cs
- HtmlInputSubmit.cs
- SoapDocumentServiceAttribute.cs
- EventData.cs
- XmlText.cs
- DataGridViewRowsRemovedEventArgs.cs
- VariableQuery.cs
- BinaryObjectWriter.cs
- SapiRecoInterop.cs
- CompositeClientFormatter.cs
- LoadedOrUnloadedOperation.cs
- TypedDatasetGenerator.cs
- TcpChannelHelper.cs
- ResolveNameEventArgs.cs
- RoleManagerEventArgs.cs
- Rotation3D.cs
- RewritingValidator.cs
- PrintDialogException.cs
- ImportContext.cs
- BaseAppDomainProtocolHandler.cs
- FormViewPageEventArgs.cs
- PropertyGrid.cs
- MetadataSerializer.cs
- StaticTextPointer.cs
- SplitterPanel.cs
- PlatformNotSupportedException.cs
- SystemIPv4InterfaceProperties.cs
- ChangePassword.cs
- SerialPort.cs
- EntityProviderFactory.cs
- OletxCommittableTransaction.cs
- SystemShuttingDownException.cs
- XamlTemplateSerializer.cs
- PresentationAppDomainManager.cs
- Parsers.cs
- SqlCharStream.cs
- ColorTransformHelper.cs
- SchemaImporterExtensionsSection.cs
- UserNamePasswordValidator.cs
- DataTablePropertyDescriptor.cs
- TextChange.cs
- InputEventArgs.cs
- SiteOfOriginContainer.cs
- SerialStream.cs
- SqlLiftWhereClauses.cs