Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Framework / MS / Internal / Controls / TemplatedAdorner.cs / 1 / TemplatedAdorner.cs
//---------------------------------------------------------------------------- // //// Copyright (C) 2005 by Microsoft Corporation. All rights reserved. // // // // Description: // TemplatedAdorner applies the style provided in the ctor to a // control and provides a transform via GetDesiredTransform that // will cause the AdornedElementPlaceholder to be positioned directly // over the AdornedElement. // // See specs at [....]/connecteddata/Specs/Validation.mht // // History: // 02/01/2005 [....]: created. // //--------------------------------------------------------------------------- using System; using System.Collections; using System.Collections.Specialized; using System.ComponentModel; using System.Diagnostics; using System.Windows.Media; using System.Windows; using System.Windows.Data; using System.Windows.Controls; using System.Windows.Documents; using MS.Utility; namespace MS.Internal.Controls { ////// This class is sealed because it calls OnVisualChildrenChanged virtual in the /// constructor and it does not override it, but derived classes could. /// internal sealed class TemplatedAdorner: Adorner { private Control _child; ////// The clear the single child of a TemplatedAdorner /// public void ClearChild() { this.RemoveVisualChild(_child); _child = null; } public TemplatedAdorner(UIElement adornedElement, ControlTemplate adornerTemplate) : base(adornedElement) { Debug.Assert(adornedElement != null, "adornedElement should not be null"); Debug.Assert(adornerTemplate != null, "adornerTemplate should not be null"); Control control = new Control(); control.DataContext = Validation.GetErrors(adornedElement); //control.IsEnabled = false; // Hittest should not work on visual subtree control.Template = adornerTemplate; _child = control; this.AddVisualChild(_child); } ////// Adorners don't always want to be transformed in the same way as the elements they /// adorn. Adorners which adorn points, such as resize handles, want to be translated /// and rotated but not scaled. Adorners adorning an object, like a marquee, may want /// all transforms. This method is called by AdornerLayer to allow the adorner to /// filter out the transforms it doesn't want and return a new transform with just the /// transforms it wants applied. An adorner can also add an additional translation /// transform at this time, allowing it to be positioned somewhere other than the upper /// left corner of its adorned element. /// /// The transform applied to the object the adorner adorns ///Transform to apply to the adorner public override GeneralTransform GetDesiredTransform(GeneralTransform transform) { if (ReferenceElement == null) return transform; GeneralTransformGroup group = new GeneralTransformGroup(); group.Children.Add(transform); GeneralTransform t = this.TransformToDescendant(ReferenceElement); if (t != null) { group.Children.Add(t); } return group; } public FrameworkElement ReferenceElement { get { return _referenceElement; } set { _referenceElement = value; } } ////// Derived class must implement to support Visual children. The method must return /// the child at the specified index. Index must be between 0 and GetVisualChildrenCount-1. /// /// By default a Visual does not have any children. /// /// Remark: /// During this virtual call it is not valid to modify the Visual tree. /// protected override Visual GetVisualChild(int index) { if(_child == null || index != 0) { throw new ArgumentOutOfRangeException("index", index, SR.Get(SRID.Visual_ArgumentOutOfRange)); } return _child; } ////// Derived classes override this property to enable the Visual code to enumerate /// the Visual children. Derived classes need to return the number of children /// from this method. /// /// By default a Visual does not have any children. /// /// Remark: During this virtual method the Visual tree must not be modified. /// protected override int VisualChildrenCount { get { return _child != null ? 1 : 0; } } ////// Measure adorner. Default behavior is to size to match the adorned element. /// protected override Size MeasureOverride(Size constraint) { Debug.Assert(_child != null, "_child should not be null"); if (ReferenceElement != null && AdornedElement != null && AdornedElement.IsMeasureValid && !DoubleUtil.AreClose(ReferenceElement.DesiredSize, AdornedElement.DesiredSize) ) { ReferenceElement.InvalidateMeasure(); } (_child).Measure(constraint); return (_child).DesiredSize; } ////// Default control arrangement is to only arrange /// the first visual child. No transforms will be applied. /// protected override Size ArrangeOverride(Size size) { Size finalSize; finalSize = base.ArrangeOverride(size); if (_child != null) { _child.Arrange(new Rect(new Point(), finalSize)); } return finalSize; } private FrameworkElement _referenceElement; } } // 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
- StyleBamlRecordReader.cs
- AppearanceEditorPart.cs
- CFStream.cs
- StreamResourceInfo.cs
- Font.cs
- MaskedTextProvider.cs
- MapPathBasedVirtualPathProvider.cs
- HttpCacheVary.cs
- EntityDataSourceWizardForm.cs
- DataBindingCollection.cs
- TogglePattern.cs
- TextureBrush.cs
- DropShadowBitmapEffect.cs
- ProfileInfo.cs
- PropertyDescriptor.cs
- CollectionExtensions.cs
- Convert.cs
- QuaternionAnimationUsingKeyFrames.cs
- ParserHooks.cs
- ContentElementAutomationPeer.cs
- CqlParserHelpers.cs
- Atom10FormatterFactory.cs
- FlowPosition.cs
- PageHandlerFactory.cs
- BitmapEffectDrawingContextWalker.cs
- Calendar.cs
- CompositeScriptReference.cs
- CollectionChangeEventArgs.cs
- StatementContext.cs
- ControlFilterExpression.cs
- OdbcConnection.cs
- DecoderFallback.cs
- ObjectContext.cs
- QilXmlReader.cs
- ClientTargetSection.cs
- PageThemeParser.cs
- DocumentXPathNavigator.cs
- Wizard.cs
- IdleTimeoutMonitor.cs
- DataKey.cs
- SecurityKeyEntropyMode.cs
- SelectedGridItemChangedEvent.cs
- DbConnectionOptions.cs
- DataRelation.cs
- CheckBoxList.cs
- OledbConnectionStringbuilder.cs
- TypeSemantics.cs
- TreeSet.cs
- WebUtil.cs
- ConsumerConnectionPoint.cs
- ExportOptions.cs
- BreakRecordTable.cs
- DbProviderFactory.cs
- EventEntry.cs
- ClientRuntimeConfig.cs
- SqlError.cs
- ReachVisualSerializer.cs
- DesignerDataTableBase.cs
- QuaternionConverter.cs
- TraceSource.cs
- RegistryKey.cs
- PageCache.cs
- ToolboxDataAttribute.cs
- PhonemeEventArgs.cs
- TransformedBitmap.cs
- DependencyPropertyConverter.cs
- WebControlsSection.cs
- AsyncWaitHandle.cs
- ServiceDurableInstanceContextProvider.cs
- SqlDependency.cs
- KeyBinding.cs
- DataServiceClientException.cs
- MultiPageTextView.cs
- AsnEncodedData.cs
- DoubleLinkList.cs
- WSSecurityOneDotOneSendSecurityHeader.cs
- DesignTimeVisibleAttribute.cs
- FieldCollectionEditor.cs
- CorrelationService.cs
- SwitchElementsCollection.cs
- UnsafeNetInfoNativeMethods.cs
- BindingOperations.cs
- ContentTextAutomationPeer.cs
- DesignTimeData.cs
- EdmRelationshipRoleAttribute.cs
- ImageUrlEditor.cs
- LinearGradientBrush.cs
- FontFamily.cs
- RectIndependentAnimationStorage.cs
- ZipFileInfoCollection.cs
- MetaColumn.cs
- EventDescriptorCollection.cs
- HtmlEmptyTagControlBuilder.cs
- XmlDataDocument.cs
- MultipleViewProviderWrapper.cs
- AnnotationStore.cs
- UTF32Encoding.cs
- CounterSet.cs
- EarlyBoundInfo.cs
- UserControlCodeDomTreeGenerator.cs