Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Print / Reach / Serialization / XpsImageSerializationService.cs / 1 / XpsImageSerializationService.cs
/*++ Copyright (C) 2004 - 2005 Microsoft Corporation All rights reserved. Module Name: XpsImageSerializationService.cs Abstract: This file implements the XpsImageSerializationService used by the Xps Serialization APIs for serializing images to a Xps package. Author: [....] ([....]) 1-December-2004 Revision History: 07/12/2005: [....]: Reach -> Xps --*/ using System; using System.IO; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Security; using System.Security.Permissions; using System.Windows.Xps.Packaging; using MS.Internal; namespace System.Windows.Xps.Serialization { ////// This class implements a support service for serialization /// of BitmapSource instances to a Xps package. /// internal class XpsImageSerializationService { #region Public methods ////// This method retrieves the BitmapEncoder to be used for /// serialization based on the specified BitmapSource. /// /// /// A reference to a BitmapSource that will be encoded. /// ////// Returns a reference to a new BitmapEncoder. /// ////// Critical - 1) Asserts to access the registry. May return path information which /// could disclose windows directory (ie. c:\windows\media\sound.wav) /// /// [SecurityCritical] public BitmapEncoder GetEncoder( BitmapSource bitmapSource ) { BitmapEncoder encoder = null; if (bitmapSource is BitmapFrame) { // // This code gets the encoder based on the decoder that was // used for this specific BitmapSource. // BitmapFrame bitmapImage = bitmapSource as BitmapFrame; BitmapCodecInfo codecInfo = null; if (bitmapImage != null && bitmapImage.Decoder != null) codecInfo = bitmapImage.Decoder.CodecInfo; if (codecInfo != null) { (new RegistryPermission(PermissionState.Unrestricted)).Assert(); try { encoder = BitmapEncoder.Create(codecInfo.ContainerFormat); } finally { RegistryPermission.RevertAssert(); } // Avoid GIF encoder which does not save transparency well if ( !( encoder is JpegBitmapEncoder || encoder is PngBitmapEncoder || encoder is TiffBitmapEncoder || encoder is WmpBitmapEncoder) ) { encoder = null; } } } // // The code above assumes that the BitmapSource is actually // a BitmapImage. If it is not then we assume Png and use // that encoder. // if (encoder == null) { if (Microsoft.Internal.AlphaFlattener.Utility.NeedPremultiplyAlpha(bitmapSource)) { encoder = new WmpBitmapEncoder(); } else { encoder = new PngBitmapEncoder(); } } return encoder; } ////// This method determines if a bitmap is of a supported /// Xps Mime type /// /// /// A reference to a BitmapSource to be tested. /// ////// Returns true if the bitmapSource is of supported mimetype /// ////// Critical - 1) Asserts to access the registry. May return path information which /// could disclose windows directory (ie. c:\windows\media\sound.wav) /// /// [SecurityCritical] public bool IsSupportedMimeType( BitmapSource bitmapSource ) { BitmapCodecInfo codecInfo = null; string imageMimeType = ""; if (bitmapSource is BitmapFrame) { // // This code gets the encoder based on the decoder that was // used for this specific BitmapSource. // BitmapFrame bitmapFrame = bitmapSource as BitmapFrame; if (bitmapFrame != null && bitmapFrame.Decoder != null) { codecInfo = bitmapFrame.Decoder.CodecInfo; } } if (codecInfo != null) { (new RegistryPermission(PermissionState.Unrestricted)).Assert(); try { imageMimeType = codecInfo.MimeTypes; } finally { RegistryPermission.RevertAssert(); } } int start = 0; int comma = imageMimeType.IndexOf(',', start); bool foundType = false; // // Test all strings before commas // if( comma != -1 ) { while (comma != -1 && !foundType) { string subString = imageMimeType.Substring(start, comma); foundType = XpsManager.SupportedImageType( new ContentType(subString) ); start = comma+1; comma = imageMimeType.IndexOf(',', start); } } // // If we still have not found a supported type // Test the remainder of the string // if( !foundType ) { foundType = XpsManager.SupportedImageType( new ContentType(imageMimeType.Substring(start)) ); } return foundType; } ////// This method verifies whether a given BitmapSource /// is serializable by this service. /// /// /// A reference to a BitmapSource to be checked. /// ////// A boolean value specifing serializability. /// public bool VerifyImageSourceSerializability( BitmapSource bitmapSource ) { throw new NotImplementedException(); } ////// This method serializes a given BitmapSource to a /// stream and returns a reference to the stream. /// /// /// A reference to a BitmapSource to be serialized. /// ////// A reference to a Stream where BitmapSource was serialized. /// public Stream SerializeToStream( BitmapSource bitmapSource ) { throw new NotImplementedException(); } #endregion Public methods } } // 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
- WorkflowInstanceAbortedRecord.cs
- Vector3DAnimation.cs
- MessageEnumerator.cs
- NumberFormatInfo.cs
- EnumDataContract.cs
- UnsignedPublishLicense.cs
- RegularExpressionValidator.cs
- AuthStoreRoleProvider.cs
- CodeVariableReferenceExpression.cs
- ToolBarTray.cs
- PagedDataSource.cs
- XamlStyleSerializer.cs
- BitmapEffectDrawingContextState.cs
- IndentedWriter.cs
- DetailsViewRowCollection.cs
- NativeMethodsCLR.cs
- AssemblyCollection.cs
- DataGridViewButtonColumn.cs
- StringResourceManager.cs
- XmlCountingReader.cs
- ApplicationSettingsBase.cs
- Queue.cs
- Calendar.cs
- XmlSchema.cs
- Keyboard.cs
- UpdatePanelTriggerCollection.cs
- HtmlForm.cs
- HttpProfileGroupBase.cs
- PropertyChangeTracker.cs
- CommandHelpers.cs
- CommandDevice.cs
- ApplicationSecurityInfo.cs
- DoubleAnimationClockResource.cs
- ReadContentAsBinaryHelper.cs
- CodeLabeledStatement.cs
- StackBuilderSink.cs
- GeneralTransformGroup.cs
- EntityDataSourceChangingEventArgs.cs
- LicenseManager.cs
- DoubleCollectionValueSerializer.cs
- XsltLibrary.cs
- _NegoStream.cs
- ErrorStyle.cs
- InfoCardArgumentException.cs
- WeakEventManager.cs
- ToolStripDropDownClosedEventArgs.cs
- OutputCacheSection.cs
- DataGridViewSelectedColumnCollection.cs
- NamedServiceModelExtensionCollectionElement.cs
- RoleService.cs
- ProcessInputEventArgs.cs
- CodeDomLocalizationProvider.cs
- XmlWriterTraceListener.cs
- ExternalException.cs
- BitmapEditor.cs
- ObjectDataSourceStatusEventArgs.cs
- PackageRelationshipSelector.cs
- XslAst.cs
- ThreadInterruptedException.cs
- ParentUndoUnit.cs
- ListViewDeletedEventArgs.cs
- MediaEntryAttribute.cs
- ImageAutomationPeer.cs
- RoleExceptions.cs
- WSFederationHttpBindingElement.cs
- HexParser.cs
- MdiWindowListItemConverter.cs
- ToolStripStatusLabel.cs
- PropertyGridEditorPart.cs
- Code.cs
- QuotedPrintableStream.cs
- TreeViewDataItemAutomationPeer.cs
- RemotingSurrogateSelector.cs
- Vector3DConverter.cs
- GuidConverter.cs
- ValueSerializer.cs
- InvalidProgramException.cs
- MembershipSection.cs
- SendMailErrorEventArgs.cs
- cache.cs
- ListBoxChrome.cs
- MexHttpBindingCollectionElement.cs
- AutoCompleteStringCollection.cs
- DeliveryRequirementsAttribute.cs
- Thumb.cs
- HandleCollector.cs
- FilterEventArgs.cs
- LocalizationCodeDomSerializer.cs
- BindingList.cs
- CodeCatchClause.cs
- AssemblyLoader.cs
- InvariantComparer.cs
- Aggregates.cs
- TracePayload.cs
- LambdaCompiler.Generated.cs
- LightweightEntityWrapper.cs
- LinkedResourceCollection.cs
- RegexNode.cs
- ConfigLoader.cs
- SecurityHelper.cs