Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Framework / System / Windows / Documents / AdornerDecorator.cs / 1 / AdornerDecorator.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: // AdornerDecorator class. // See spec at: http://avalon/uis/Specs/AdornerLayer%20Spec.htm // // History: // 1/29/2004 psarrett: Created // //--------------------------------------------------------------------------- using System; using System.Collections; using System.Windows; using System.Windows.Controls; using System.Windows.Media; using System.Windows.Threading; namespace System.Windows.Documents { ////// This AdornerDecorator does not hookup its child in the logical tree. It's being /// used by PopupRoot and FixedDocument. /// internal class NonLogicalAdornerDecorator : AdornerDecorator { public override UIElement Child { get { return IntChild; } set { if (IntChild != value) { this.RemoveVisualChild(IntChild); this.RemoveVisualChild(AdornerLayer); IntChild = value; if(value != null) { this.AddVisualChild(value); this.AddVisualChild(AdornerLayer); } InvalidateMeasure(); } } } } ////// Object which allows elements beneath it in the visual tree to be adorned. /// AdornerDecorator has two children. /// The first child is the parent of the rest of the visual tree below the AdornerDecorator. /// The second child is the AdornerLayer on which adorners are rendered. /// /// AdornerDecorator is intended to be used as part of an object's Style. /// public class AdornerDecorator : Decorator { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors ////// Constructor /// public AdornerDecorator() : base() { _adornerLayer = new AdornerLayer(); } #endregion Constructors //------------------------------------------------------ // // Public Methods // //----------------------------------------------------- //------------------------------------------------------ // // Public Properties // //------------------------------------------------------ #region Public Properties ////// AdornerLayer on which adorners are rendered. /// public AdornerLayer AdornerLayer { get { return _adornerLayer; } } #endregion Public Properties //----------------------------------------------------- // // Protected Methods // //------------------------------------------------------ #region Protected Methods ////// Measurement override. Implement your size-to-content logic here. /// /// /// Sizing constraint. /// protected override Size MeasureOverride(Size constraint) { Size desiredSize = base.MeasureOverride(constraint); if (VisualTreeHelper.GetParent(_adornerLayer) != null) { // We don't really care about the size of the AdornerLayer-- we'll // always just make the AdornerDecorator the full desiredSize. But // we need to measure it anyway, to make sure Adorners render. _adornerLayer.Measure(constraint); } return desiredSize; } ////// Override for /// The size reserved for this element by the parent ////// The actual ink area of the element, typically the same as finalSize protected override Size ArrangeOverride(Size finalSize) { Size inkSize = base.ArrangeOverride(finalSize); if (VisualTreeHelper.GetParent(_adornerLayer) != null) { _adornerLayer.Arrange(new Rect(finalSize)); } return (inkSize); } ////// Gets or sets the child of the AdornerDecorator. /// public override UIElement Child { get { return base.Child; } set { Visual old = base.Child; if (old == value) { return; } if (value == null) { base.Child = null; RemoveVisualChild(_adornerLayer); } else { base.Child = value; AddVisualChild(_adornerLayer); } } } ////// Returns the Visual children count. /// protected override int VisualChildrenCount { get { if (base.Child != null) { return 2; // One for the child and one for the adorner layer. } else { return 0; } } } ////// Returns the child at the specified index. /// protected override Visual GetVisualChild(int index) { if (base.Child == null) { throw new ArgumentOutOfRangeException("index", index, SR.Get(SRID.Visual_ArgumentOutOfRange)); } else { switch (index) { case 0: return base.Child; case 1: return _adornerLayer; default: throw new ArgumentOutOfRangeException("index", index, SR.Get(SRID.Visual_ArgumentOutOfRange)); } } } #endregion Protected Methods //----------------------------------------------------- // // Private Members // //----------------------------------------------------- #region Private Members // // This property // 1. Finds the correct initial size for the _effectiveValues store on the current DependencyObject // 2. This is a performance optimization // internal override int EffectiveValuesInitialSize { get { return 6; } } readonly AdornerLayer _adornerLayer; #endregion Private Members } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: // AdornerDecorator class. // See spec at: http://avalon/uis/Specs/AdornerLayer%20Spec.htm // // History: // 1/29/2004 psarrett: Created // //--------------------------------------------------------------------------- using System; using System.Collections; using System.Windows; using System.Windows.Controls; using System.Windows.Media; using System.Windows.Threading; namespace System.Windows.Documents { ////// This AdornerDecorator does not hookup its child in the logical tree. It's being /// used by PopupRoot and FixedDocument. /// internal class NonLogicalAdornerDecorator : AdornerDecorator { public override UIElement Child { get { return IntChild; } set { if (IntChild != value) { this.RemoveVisualChild(IntChild); this.RemoveVisualChild(AdornerLayer); IntChild = value; if(value != null) { this.AddVisualChild(value); this.AddVisualChild(AdornerLayer); } InvalidateMeasure(); } } } } ////// Object which allows elements beneath it in the visual tree to be adorned. /// AdornerDecorator has two children. /// The first child is the parent of the rest of the visual tree below the AdornerDecorator. /// The second child is the AdornerLayer on which adorners are rendered. /// /// AdornerDecorator is intended to be used as part of an object's Style. /// public class AdornerDecorator : Decorator { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors ////// Constructor /// public AdornerDecorator() : base() { _adornerLayer = new AdornerLayer(); } #endregion Constructors //------------------------------------------------------ // // Public Methods // //----------------------------------------------------- //------------------------------------------------------ // // Public Properties // //------------------------------------------------------ #region Public Properties ////// AdornerLayer on which adorners are rendered. /// public AdornerLayer AdornerLayer { get { return _adornerLayer; } } #endregion Public Properties //----------------------------------------------------- // // Protected Methods // //------------------------------------------------------ #region Protected Methods ////// Measurement override. Implement your size-to-content logic here. /// /// /// Sizing constraint. /// protected override Size MeasureOverride(Size constraint) { Size desiredSize = base.MeasureOverride(constraint); if (VisualTreeHelper.GetParent(_adornerLayer) != null) { // We don't really care about the size of the AdornerLayer-- we'll // always just make the AdornerDecorator the full desiredSize. But // we need to measure it anyway, to make sure Adorners render. _adornerLayer.Measure(constraint); } return desiredSize; } ////// Override for /// The size reserved for this element by the parent ////// The actual ink area of the element, typically the same as finalSize protected override Size ArrangeOverride(Size finalSize) { Size inkSize = base.ArrangeOverride(finalSize); if (VisualTreeHelper.GetParent(_adornerLayer) != null) { _adornerLayer.Arrange(new Rect(finalSize)); } return (inkSize); } ////// Gets or sets the child of the AdornerDecorator. /// public override UIElement Child { get { return base.Child; } set { Visual old = base.Child; if (old == value) { return; } if (value == null) { base.Child = null; RemoveVisualChild(_adornerLayer); } else { base.Child = value; AddVisualChild(_adornerLayer); } } } ////// Returns the Visual children count. /// protected override int VisualChildrenCount { get { if (base.Child != null) { return 2; // One for the child and one for the adorner layer. } else { return 0; } } } ////// Returns the child at the specified index. /// protected override Visual GetVisualChild(int index) { if (base.Child == null) { throw new ArgumentOutOfRangeException("index", index, SR.Get(SRID.Visual_ArgumentOutOfRange)); } else { switch (index) { case 0: return base.Child; case 1: return _adornerLayer; default: throw new ArgumentOutOfRangeException("index", index, SR.Get(SRID.Visual_ArgumentOutOfRange)); } } } #endregion Protected Methods //----------------------------------------------------- // // Private Members // //----------------------------------------------------- #region Private Members // // This property // 1. Finds the correct initial size for the _effectiveValues store on the current DependencyObject // 2. This is a performance optimization // internal override int EffectiveValuesInitialSize { get { return 6; } } readonly AdornerLayer _adornerLayer; #endregion Private Members } } // 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
- EditBehavior.cs
- Storyboard.cs
- ScrollContentPresenter.cs
- UrlPropertyAttribute.cs
- NotificationContext.cs
- DataTemplateSelector.cs
- WriteableBitmap.cs
- IisTraceWebEventProvider.cs
- FormsAuthentication.cs
- NegotiateStream.cs
- Int16.cs
- SafeCoTaskMem.cs
- NetworkInformationException.cs
- ToolStripSystemRenderer.cs
- IPipelineRuntime.cs
- WebPartConnectionsDisconnectVerb.cs
- RijndaelManaged.cs
- InputManager.cs
- RuntimeArgumentHandle.cs
- MetadataWorkspace.cs
- TrustManagerMoreInformation.cs
- CharConverter.cs
- NameTable.cs
- RowCache.cs
- DecodeHelper.cs
- ServicePointManagerElement.cs
- ControlCachePolicy.cs
- WmlLinkAdapter.cs
- LayoutDump.cs
- LayoutEngine.cs
- WebPartEditorOkVerb.cs
- ProcessHostServerConfig.cs
- DataListItemEventArgs.cs
- TextReader.cs
- TextAutomationPeer.cs
- TimelineGroup.cs
- ImportCatalogPart.cs
- DataServiceQueryOfT.cs
- EntityDataSourceContainerNameItem.cs
- FontStyleConverter.cs
- RsaSecurityTokenAuthenticator.cs
- PassportAuthenticationModule.cs
- ManagementObjectSearcher.cs
- UnionCodeGroup.cs
- EFTableProvider.cs
- InstanceKeyView.cs
- PeekCompletedEventArgs.cs
- ScaleTransform.cs
- Converter.cs
- SurrogateSelector.cs
- CompModSwitches.cs
- TransactionsSectionGroup.cs
- IncrementalCompileAnalyzer.cs
- CFGGrammar.cs
- BinaryConverter.cs
- KeyedCollection.cs
- ScriptReferenceEventArgs.cs
- DisplayToken.cs
- MessageBox.cs
- PipelineModuleStepContainer.cs
- ClassGenerator.cs
- HyperLinkColumn.cs
- MetaColumn.cs
- XPathAxisIterator.cs
- TreeViewHitTestInfo.cs
- Invariant.cs
- PasswordDeriveBytes.cs
- DataGridViewHeaderCell.cs
- TokenBasedSet.cs
- ServiceDescriptions.cs
- SpeechRecognitionEngine.cs
- SmtpReplyReader.cs
- TypeInitializationException.cs
- DiagnosticTrace.cs
- CheckedListBox.cs
- ButtonColumn.cs
- Message.cs
- CommonDialog.cs
- StandardTransformFactory.cs
- DeleteBookmarkScope.cs
- MDIWindowDialog.cs
- TraceHandlerErrorFormatter.cs
- AsyncStreamReader.cs
- DtdParser.cs
- GregorianCalendarHelper.cs
- MaskInputRejectedEventArgs.cs
- ViewManager.cs
- SerialReceived.cs
- FontCollection.cs
- LowerCaseStringConverter.cs
- CompensationTokenData.cs
- SimpleWebHandlerParser.cs
- Serializer.cs
- SmiSettersStream.cs
- Bits.cs
- BindingFormattingDialog.cs
- RadioButtonRenderer.cs
- StandardOleMarshalObject.cs
- DynamicMetaObjectBinder.cs
- TypeLibConverter.cs