Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / Media / Imaging / ColorConvertedBitmap.cs / 1 / ColorConvertedBitmap.cs
//------------------------------------------------------------------------------ // Microsoft Avalon // Copyright (c) Microsoft Corporation. All Rights Reserved. // // File: ColorConvertedBitmap.cs // //----------------------------------------------------------------------------- using System; using System.IO; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Reflection; using MS.Internal; using MS.Win32.PresentationCore; using System.Security; using System.Security.Permissions; using System.Diagnostics; using System.Windows.Media; using System.Globalization; using System.Runtime.InteropServices; using System.Windows.Media.Animation; using System.Windows.Media.Composition; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows.Media.Imaging { #region ColorConvertedBitmap ////// ColorConvertedBitmap provides caching functionality for a BitmapSource. /// public sealed partial class ColorConvertedBitmap : Imaging.BitmapSource, ISupportInitialize { ////// Constructor /// public ColorConvertedBitmap() : base(true) { } ////// Construct a ColorConvertedBitmap /// /// Input BitmapSource to color convert /// Source Color Context /// Destination Color Context /// Destination Pixel format public ColorConvertedBitmap(BitmapSource source, ColorContext sourceColorContext, ColorContext destinationColorContext, PixelFormat format) : base(true) // Use base class virtuals { if (source == null) { throw new ArgumentNullException("source"); } if (sourceColorContext == null) { throw new ArgumentNullException("sourceColorContext"); } if (destinationColorContext == null) { throw new ArgumentNullException("destinationColorContext"); } _bitmapInit.BeginInit(); Source = source; SourceColorContext = sourceColorContext; DestinationColorContext = destinationColorContext; DestinationFormat = format; _bitmapInit.EndInit(); FinalizeCreation(); } // ISupportInitialize ////// Prepare the bitmap to accept initialize paramters. /// public void BeginInit() { WritePreamble(); _bitmapInit.BeginInit(); } ////// Prepare the bitmap to accept initialize paramters. /// ////// Critical - access critical resources /// PublicOK - All inputs verified /// [SecurityCritical ] public void EndInit() { WritePreamble(); _bitmapInit.EndInit(); if (Source == null) { throw new InvalidOperationException(SR.Get(SRID.Image_NoArgument, "Source")); } if ( SourceColorContext == null) { throw new InvalidOperationException(SR.Get(SRID.Color_NullColorContext)); } if (DestinationColorContext == null) { throw new InvalidOperationException(SR.Get(SRID.Image_NoArgument, "DestinationColorContext")); } FinalizeCreation(); } private void ClonePrequel(ColorConvertedBitmap otherColorConvertedBitmap) { BeginInit(); } private void ClonePostscript(ColorConvertedBitmap otherColorConvertedBitmap) { EndInit(); } /// /// Create the unmanaged resources /// ////// Critical - access critical resource /// [SecurityCritical] internal override void FinalizeCreation() { _bitmapInit.EnsureInitializedComplete(); BitmapSourceSafeMILHandle wicConverter = null; HRESULT.Check(UnsafeNativeMethods.WICCodec.CreateColorTransform( out wicConverter)); lock (_syncObject) { Guid fmtDestFmt = DestinationFormat.Guid; HRESULT.Check(UnsafeNativeMethods.WICColorTransform.Initialize( wicConverter, Source.WicSourceHandle, SourceColorContext.ColorContextHandle, DestinationColorContext.ColorContextHandle, ref fmtDestFmt)); } WicSourceHandle = wicConverter; _isSourceCached = Source.IsSourceCached; CreationCompleted = true; UpdateCachedSettings(); } ////// Notification on source changing. /// private void SourcePropertyChangedHook(DependencyPropertyChangedEventArgs e) { if (!e.IsASubPropertyChange) { BitmapSource newSource = e.NewValue as BitmapSource; _source = newSource; _syncObject = (newSource != null) ? newSource.SyncObject : _bitmapInit; } } ////// Notification on source colorcontext changing. /// private void SourceColorContextPropertyChangedHook(DependencyPropertyChangedEventArgs e) { if (!e.IsASubPropertyChange) { _sourceColorContext = e.NewValue as ColorContext; } } ////// Notification on destination colorcontext changing. /// private void DestinationColorContextPropertyChangedHook(DependencyPropertyChangedEventArgs e) { if (!e.IsASubPropertyChange) { _destinationColorContext = e.NewValue as ColorContext; } } ////// Notification on destination format changing. /// private void DestinationFormatPropertyChangedHook(DependencyPropertyChangedEventArgs e) { if (!e.IsASubPropertyChange) { _destinationFormat = (PixelFormat)e.NewValue; } } ////// Coerce Source /// private static object CoerceSource(DependencyObject d, object value) { ColorConvertedBitmap bitmap = (ColorConvertedBitmap)d; if (!bitmap._bitmapInit.IsInInit) { return bitmap._source; } else { return value; } } ////// Coerce SourceColorContext /// private static object CoerceSourceColorContext(DependencyObject d, object value) { ColorConvertedBitmap bitmap = (ColorConvertedBitmap)d; if (!bitmap._bitmapInit.IsInInit) { return bitmap._sourceColorContext; } else { return value; } } ////// Coerce DestinationColorContext /// private static object CoerceDestinationColorContext(DependencyObject d, object value) { ColorConvertedBitmap bitmap = (ColorConvertedBitmap)d; if (!bitmap._bitmapInit.IsInInit) { return bitmap._destinationColorContext; } else { return value; } } ////// Coerce DestinationFormat /// private static object CoerceDestinationFormat(DependencyObject d, object value) { ColorConvertedBitmap bitmap = (ColorConvertedBitmap)d; if (!bitmap._bitmapInit.IsInInit) { return bitmap._destinationFormat; } else { return value; } } #region Data members private BitmapSource _source; private ColorContext _sourceColorContext; private ColorContext _destinationColorContext; private PixelFormat _destinationFormat; #endregion } #endregion // ColorConvertedBitmap } // 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
- XmlNotation.cs
- ReferenceEqualityComparer.cs
- SmtpSection.cs
- EditingMode.cs
- AttachedAnnotation.cs
- Tokenizer.cs
- IIS7UserPrincipal.cs
- SamlAuthorizationDecisionStatement.cs
- FixedBufferAttribute.cs
- PreProcessor.cs
- StrongBox.cs
- SyntaxCheck.cs
- CodeGenerator.cs
- CustomCategoryAttribute.cs
- TableCellCollection.cs
- CaseStatement.cs
- Matrix3DConverter.cs
- CustomBindingCollectionElement.cs
- ParamArrayAttribute.cs
- ContentIterators.cs
- COM2FontConverter.cs
- XmlProcessingInstruction.cs
- BindingCompleteEventArgs.cs
- CacheChildrenQuery.cs
- MessageQueuePermissionEntry.cs
- ClickablePoint.cs
- QilTernary.cs
- CssTextWriter.cs
- GenericIdentity.cs
- StringOutput.cs
- PageWrapper.cs
- TextSpanModifier.cs
- SrgsRulesCollection.cs
- PersistChildrenAttribute.cs
- ResourcePart.cs
- EastAsianLunisolarCalendar.cs
- counter.cs
- EventLogWatcher.cs
- InlineObject.cs
- TreeViewImageIndexConverter.cs
- TypeUnloadedException.cs
- ProxyManager.cs
- AppDomainUnloadedException.cs
- PbrsForward.cs
- OperationCanceledException.cs
- JsonFormatGeneratorStatics.cs
- HttpCookie.cs
- StateRuntime.cs
- SeparatorAutomationPeer.cs
- ObjectDataSource.cs
- FormsAuthenticationCredentials.cs
- ClientSession.cs
- CommandValueSerializer.cs
- PlatformCulture.cs
- CompilationUtil.cs
- SafeTimerHandle.cs
- XamlInterfaces.cs
- WmlObjectListAdapter.cs
- StrokeFIndices.cs
- CatalogZone.cs
- LineSegment.cs
- CodeTypeMemberCollection.cs
- ILGenerator.cs
- TypeNameConverter.cs
- DataListItemEventArgs.cs
- SystemIPv6InterfaceProperties.cs
- NavigationExpr.cs
- SqlUDTStorage.cs
- PolyLineSegment.cs
- Helper.cs
- TextParagraphCache.cs
- ResourceExpression.cs
- DrawingGroupDrawingContext.cs
- CasesDictionary.cs
- EnumValidator.cs
- BaseConfigurationRecord.cs
- RedirectionProxy.cs
- XmlWrappingReader.cs
- SweepDirectionValidation.cs
- DecimalConverter.cs
- figurelength.cs
- SqlMultiplexer.cs
- StringCollection.cs
- BidPrivateBase.cs
- MenuItemStyleCollection.cs
- StatusBar.cs
- GlobalEventManager.cs
- FrameworkName.cs
- SortKey.cs
- SmtpNegotiateAuthenticationModule.cs
- CommandPlan.cs
- SafeLibraryHandle.cs
- DeploymentExceptionMapper.cs
- FusionWrap.cs
- _LocalDataStore.cs
- PermissionRequestEvidence.cs
- ProtectedProviderSettings.cs
- ShaderEffect.cs
- KeyGestureValueSerializer.cs
- InternalBufferManager.cs