Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / 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
- _ChunkParse.cs
- StyleSheetRefUrlEditor.cs
- TabletCollection.cs
- IEnumerable.cs
- METAHEADER.cs
- PrimarySelectionGlyph.cs
- StringAttributeCollection.cs
- CellLabel.cs
- AccessibleObject.cs
- AsnEncodedData.cs
- FunctionImportElement.cs
- SortableBindingList.cs
- CheckedPointers.cs
- TextClipboardData.cs
- BmpBitmapEncoder.cs
- Wizard.cs
- ArrayConverter.cs
- SparseMemoryStream.cs
- assertwrapper.cs
- MarkerProperties.cs
- PointCollection.cs
- SmtpAuthenticationManager.cs
- ConversionValidationRule.cs
- Base64Decoder.cs
- HttpHeaderCollection.cs
- QueryInterceptorAttribute.cs
- ViewStateModeByIdAttribute.cs
- X509UI.cs
- SignedInfo.cs
- SchemaHelper.cs
- Int16.cs
- AppDomainFactory.cs
- TreeNodeStyle.cs
- TextBoxLine.cs
- ServiceControllerDesigner.cs
- ComboBoxRenderer.cs
- TextEditorThreadLocalStore.cs
- MetadataAssemblyHelper.cs
- WinFormsSecurity.cs
- PackagePart.cs
- BaseDataBoundControlDesigner.cs
- DesignerAutoFormatCollection.cs
- SingleKeyFrameCollection.cs
- BamlLocalizabilityResolver.cs
- TableStyle.cs
- LinkClickEvent.cs
- CompileLiteralTextParser.cs
- HtmlInputCheckBox.cs
- DesignerActionUIService.cs
- CheckBoxField.cs
- MILUtilities.cs
- ListControlBuilder.cs
- HttpValueCollection.cs
- CompositeControl.cs
- RawMouseInputReport.cs
- DeploymentExceptionMapper.cs
- Separator.cs
- PrintingPermissionAttribute.cs
- XmlSchemaSimpleTypeList.cs
- FileVersionInfo.cs
- InteropAutomationProvider.cs
- CompareInfo.cs
- File.cs
- SqlFunctionAttribute.cs
- ShimAsPublicXamlType.cs
- HtmlElement.cs
- ComboBoxAutomationPeer.cs
- DropSource.cs
- BooleanFunctions.cs
- TemplateBamlRecordReader.cs
- DynamicQueryStringParameter.cs
- MultiBindingExpression.cs
- CompilerLocalReference.cs
- CrossAppDomainChannel.cs
- EventDescriptor.cs
- securestring.cs
- SystemFonts.cs
- StringResourceManager.cs
- WebProxyScriptElement.cs
- TextRangeAdaptor.cs
- DownloadProgressEventArgs.cs
- SortFieldComparer.cs
- HttpEncoder.cs
- BrushMappingModeValidation.cs
- StrokeDescriptor.cs
- ShaperBuffers.cs
- FlowchartDesigner.xaml.cs
- DeflateStream.cs
- TypeToken.cs
- IndexerNameAttribute.cs
- SchemaManager.cs
- EdmTypeAttribute.cs
- ColorAnimationBase.cs
- AsymmetricSignatureDeformatter.cs
- StackBuilderSink.cs
- TypeValidationEventArgs.cs
- PersistencePipeline.cs
- WindowsRegion.cs
- SqlFactory.cs
- TraceRecord.cs