Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Core / CSharp / System / Windows / FontStretchConverter.cs / 1 / 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. //---------------------------------------------------------------------------- // // 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
- NamespaceInfo.cs
- ImageListStreamer.cs
- Schema.cs
- DocumentGridContextMenu.cs
- EUCJPEncoding.cs
- HandlerBase.cs
- MutableAssemblyCacheEntry.cs
- RequestedSignatureDialog.cs
- MetadataSource.cs
- SpotLight.cs
- CngProvider.cs
- EditorZone.cs
- LightweightEntityWrapper.cs
- StylusPointPropertyId.cs
- DirectoryObjectSecurity.cs
- SqlAliaser.cs
- AnimationClockResource.cs
- SystemException.cs
- ExtensionQuery.cs
- MediaEntryAttribute.cs
- SpeechRecognitionEngine.cs
- StandardOleMarshalObject.cs
- CRYPTPROTECT_PROMPTSTRUCT.cs
- BehaviorEditorPart.cs
- SafeEventHandle.cs
- DataSet.cs
- DtrList.cs
- DataControlFieldHeaderCell.cs
- PermissionRequestEvidence.cs
- SqlResolver.cs
- TabletCollection.cs
- FillBehavior.cs
- SQLInt64.cs
- SrgsSubset.cs
- FamilyTypeface.cs
- WebPartCancelEventArgs.cs
- EnumerableRowCollection.cs
- TextReader.cs
- OutputCacheProfileCollection.cs
- Vertex.cs
- ChtmlFormAdapter.cs
- StylusCaptureWithinProperty.cs
- WebPartUtil.cs
- QuadraticEase.cs
- ElementHostPropertyMap.cs
- VirtualDirectoryMappingCollection.cs
- InkCanvasAutomationPeer.cs
- TypePropertyEditor.cs
- ExpandedWrapper.cs
- ParameterElement.cs
- QualificationDataItem.cs
- LastQueryOperator.cs
- ProfilePropertyNameValidator.cs
- IssuanceLicense.cs
- DesignerWebPartChrome.cs
- SiteIdentityPermission.cs
- SmtpNetworkElement.cs
- ValidationPropertyAttribute.cs
- UIServiceHelper.cs
- ContainerControl.cs
- SiteOfOriginPart.cs
- LabelInfo.cs
- XmlSchemaRedefine.cs
- NotifyIcon.cs
- FieldDescriptor.cs
- PointLight.cs
- GPRECT.cs
- TransformProviderWrapper.cs
- ErrorWebPart.cs
- CharKeyFrameCollection.cs
- CreateCardRequest.cs
- WorkerRequest.cs
- ConfigDefinitionUpdates.cs
- BufferModeSettings.cs
- Stylus.cs
- Utils.cs
- TemplateControlCodeDomTreeGenerator.cs
- ColorAnimation.cs
- Int32Rect.cs
- CodeIterationStatement.cs
- NumberSubstitution.cs
- ObjectComplexPropertyMapping.cs
- BamlRecordWriter.cs
- SortedList.cs
- ProcessRequestArgs.cs
- EmbeddedMailObjectsCollection.cs
- DispatcherExceptionEventArgs.cs
- DataGridViewRowConverter.cs
- SafeFindHandle.cs
- SiteMapDataSource.cs
- SafeBitVector32.cs
- BitmapMetadataBlob.cs
- Drawing.cs
- SharedHttpsTransportManager.cs
- QilReference.cs
- ReceiveSecurityHeaderElementManager.cs
- StsCommunicationException.cs
- FilterException.cs
- KeyValueConfigurationElement.cs
- MessageDirection.cs