Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / Media / DrawingImage.cs / 1 / DrawingImage.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: DrawingImage class // An ImageSource with a Drawing for content // // // History: // 05/26/2005 : [....] - Created it // //--------------------------------------------------------------------------- using MS.Internal; using System; using System.ComponentModel; using System.Diagnostics; using System.Runtime.InteropServices; using System.Windows; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Media.Composition; using System.Windows.Media.Imaging; namespace System.Windows.Media { ////// The class definition for DrawingImage /// public sealed partial class DrawingImage : ImageSource { ////// Default DrawingImage ctor /// public DrawingImage() { } ////// DrawingImage ctor that takes a Drawing /// /// The content of the DrawingImage public DrawingImage(Drawing drawing) { Drawing = drawing; } ////// Width of the DrawingImage /// public override double Width { get { ReadPreamble(); return Size.Width; } } ////// Height of the DrawingImage /// public override double Height { get { ReadPreamble(); return Size.Height; } } ////// Get the Metadata of the DrawingImage /// public override ImageMetadata Metadata { get { ReadPreamble(); // DrawingImage does not have any metadata currently defined. return null; } } ////// Size for the DrawingImage /// internal override Size Size { get { Drawing drawing = Drawing; if (drawing != null) { Size size = drawing.GetBounds().Size; if (!size.IsEmpty) { return size; } else { return new Size(); } } else { return new Size(); } } } ////// Precompute is called during the frame preparation phase. Derived classes /// typically check if the brush requires realizations during this phase. /// internal override void Precompute() { Drawing drawing = Drawing; _requiresRealizationUpdates = false; if (drawing != null) { drawing.PrecomputeCore(); _requiresRealizationUpdates = drawing.RequiresRealizationUpdates; } } ////// Checks if realization updates are requried for this resource. /// internal override bool RequiresRealizationUpdates { get { return _requiresRealizationUpdates; } } ////// Derived classes must override this method and update realizations on dependent /// resources if required. /// internal override void UpdateRealizations(RealizationContext ctx) { if (_requiresRealizationUpdates) { Drawing drawing = Drawing; Debug.Assert(drawing != null); // Otherwise _requiresRealizationUpdates would be false. drawing.UpdateRealizations(ctx); } } ////// This node can introduce graphness /// internal override bool CanIntroduceGraphness() { return true; } private bool _requiresRealizationUpdates; } } // 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
- BlockUIContainer.cs
- CreateRefExpr.cs
- DataRecord.cs
- StringToken.cs
- FreeFormDesigner.cs
- RSAPKCS1SignatureDeformatter.cs
- BlockUIContainer.cs
- SqlFileStream.cs
- Attributes.cs
- EmptyEnumerable.cs
- AnnotationComponentChooser.cs
- CachedTypeface.cs
- WebBrowserEvent.cs
- ProvideValueServiceProvider.cs
- Internal.cs
- MobilePage.cs
- XmlSchema.cs
- COM2ExtendedBrowsingHandler.cs
- ThemeableAttribute.cs
- MessageQueueEnumerator.cs
- ObjectFullSpanRewriter.cs
- WebPartDesigner.cs
- SqlConnectionStringBuilder.cs
- ZipIOZip64EndOfCentralDirectoryLocatorBlock.cs
- PropertyTabAttribute.cs
- CodeNamespace.cs
- CapabilitiesRule.cs
- SafeHandles.cs
- XmlWellformedWriterHelpers.cs
- ObjectConverter.cs
- FragmentQueryProcessor.cs
- DependencyObjectProvider.cs
- Attribute.cs
- ResXDataNode.cs
- ScaleTransform3D.cs
- AsymmetricAlgorithm.cs
- AttributedMetaModel.cs
- DeploymentSection.cs
- HtmlGenericControl.cs
- BuildProviderCollection.cs
- ZipIOExtraFieldElement.cs
- ClientConfigPaths.cs
- PersistenceTask.cs
- ItemCollection.cs
- TransactionScopeDesigner.cs
- IPEndPointCollection.cs
- Control.cs
- BeginStoryboard.cs
- BaseParser.cs
- ZipIOExtraFieldPaddingElement.cs
- DefaultEvaluationContext.cs
- OracleParameterBinding.cs
- Library.cs
- PhoneCall.cs
- TableLayoutStyleCollection.cs
- PeerNameRecordCollection.cs
- DesignBindingPicker.cs
- RecognizerStateChangedEventArgs.cs
- DataControlLinkButton.cs
- RectangleGeometry.cs
- assertwrapper.cs
- ZoneLinkButton.cs
- OdbcEnvironment.cs
- OleDbReferenceCollection.cs
- RequestDescription.cs
- AsmxEndpointPickerExtension.cs
- _PooledStream.cs
- AnonymousIdentificationSection.cs
- ViewStateModeByIdAttribute.cs
- DoubleLinkList.cs
- PersonalizableAttribute.cs
- QuotedStringWriteStateInfo.cs
- XmlComment.cs
- RpcResponse.cs
- PropertyChangedEventArgs.cs
- AnonymousIdentificationSection.cs
- AsyncOperationManager.cs
- TemplatePropertyEntry.cs
- TransactionFilter.cs
- Keyboard.cs
- OdbcConnectionHandle.cs
- Version.cs
- _ShellExpression.cs
- StaticSiteMapProvider.cs
- ContentPathSegment.cs
- XmlSchemaAttribute.cs
- QueryContinueDragEvent.cs
- InheritanceContextChangedEventManager.cs
- PixelShader.cs
- SizeAnimationBase.cs
- UpdateCommand.cs
- TimelineClockCollection.cs
- CompositeTypefaceMetrics.cs
- EventBuilder.cs
- PathSegment.cs
- RelatedView.cs
- StreamGeometry.cs
- ArrayElementGridEntry.cs
- ConnectionConsumerAttribute.cs
- SymbolMethod.cs