Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Framework / System / Windows / Documents / Adorner.cs / 1 / Adorner.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: Info needed to draw decorations on objects // // See spec at http://avalon/uis/Specs/AdornerLayer%20Spec.htm // // History: // 10/01/2003 : psarrett - Created // 10/22/2003 : psarrett - modified as per current spec // //--------------------------------------------------------------------------- using System; using System.Collections; using System.Windows.Data; using System.Windows.Media; using System.Windows.Input; using System.Windows.Threading; using MS.Internal; // DoubleUtil namespace System.Windows.Documents { ////// An Adorner is a UIElement "attached" to another UIElement. Adorners render /// on an AdornerLayer, which puts them higher in the Z-order than the element /// to which they are attached so they visually appear on top of that element. /// By default, the AdornerLayer positions an Adorner at the upper-left corner /// of the element it adorns. However, the AdornerLayer passes the Adorner its /// proposed transform, and the Adorner can modify that proposed transform as it /// wishes. /// /// Since Adorners are UIElements, they can respond to input events. /// public abstract class Adorner : FrameworkElement { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors ////// Constructor /// protected Adorner(UIElement adornedElement) { if (adornedElement == null) throw new ArgumentNullException("adornedElement"); _adornedElement = adornedElement; _isClipEnabled = false; // Bug 1383424: We need to make sure our FlowDirection is always that of our adorned element. // Need to allow derived class constructor to execute first Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Normal, new DispatcherOperationCallback(CreateFlowDirectionBinding), this); } #endregion Constructors //------------------------------------------------------ // // Protected Methods // //----------------------------------------------------- #region Protected Methods ////// Measure adorner. Default behavior is to size to match the adorned element. /// protected override Size MeasureOverride(Size constraint) { Size desiredSize; desiredSize = new Size(AdornedElement.RenderSize.Width, AdornedElement.RenderSize.Height); int count = this.VisualChildrenCount; for (int i = 0; i < count; i++) { UIElement ch = this.GetVisualChild(i) as UIElement; if (ch != null) { ch.Measure(desiredSize); } } return desiredSize; } ////// Override of ///. /// null ////// Clip gets generated before transforms are applied, which means that /// Adorners can get inappropriately clipped if they draw outside of the bounding rect /// of the element they're adorning. This is against the Adorner philosophy of being /// topmost, so we choose to ignore clip instead. protected override Geometry GetLayoutClip(Size layoutSlotSize) { return null; } #endregion Protected Methods //------------------------------------------------------ // // Public Methods // //------------------------------------------------------ #region Public Methods ////// 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 virtual GeneralTransform GetDesiredTransform(GeneralTransform transform) { return transform; } #endregion Public Methods //----------------------------------------------------- // // Public Properties // //------------------------------------------------------ #region Public Properties ////// Gets or sets the clip of this Visual. /// Needed by AdornerLayer /// internal Geometry AdornerClip { get { return Clip; } set { Clip = value; } } ////// Gets or sets the transform of this Visual. /// Needed by AdornerLayer /// internal Transform AdornerTransform { get { return RenderTransform; } set { RenderTransform = value; } } ////// UIElement this Adorner adorns. /// public UIElement AdornedElement { get { return _adornedElement; } } ////// If set to true, the adorner will be clipped using the same clip geometry as the /// AdornedElement. This is expensive, and therefore should not normally be used. /// Defaults to false. /// public bool IsClipEnabled { get { return _isClipEnabled; } set { _isClipEnabled = value; InvalidateArrange(); AdornerLayer.GetAdornerLayer(_adornedElement).InvalidateArrange(); } } #endregion Public Properties //----------------------------------------------------- // // Private Methods // //----------------------------------------------------- #region Private Methods // Callback for binding the FlowDirection property. private static object CreateFlowDirectionBinding(object o) { Adorner adorner = (Adorner)o; Binding binding = new Binding("FlowDirection"); binding.Mode = BindingMode.OneWay; binding.Source = adorner.AdornedElement; adorner.SetBinding(FlowDirectionProperty, binding); return null; } ////// Says if the Adorner needs update based on the /// previously cached size if the AdornedElement. /// internal virtual bool NeedsUpdate(Size oldSize) { return !DoubleUtil.AreClose(AdornedElement.RenderSize, oldSize); } #endregion Private Methods //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Fields private readonly UIElement _adornedElement; private bool _isClipEnabled; #endregion Private Fields } } // 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: Info needed to draw decorations on objects // // See spec at http://avalon/uis/Specs/AdornerLayer%20Spec.htm // // History: // 10/01/2003 : psarrett - Created // 10/22/2003 : psarrett - modified as per current spec // //--------------------------------------------------------------------------- using System; using System.Collections; using System.Windows.Data; using System.Windows.Media; using System.Windows.Input; using System.Windows.Threading; using MS.Internal; // DoubleUtil namespace System.Windows.Documents { ////// An Adorner is a UIElement "attached" to another UIElement. Adorners render /// on an AdornerLayer, which puts them higher in the Z-order than the element /// to which they are attached so they visually appear on top of that element. /// By default, the AdornerLayer positions an Adorner at the upper-left corner /// of the element it adorns. However, the AdornerLayer passes the Adorner its /// proposed transform, and the Adorner can modify that proposed transform as it /// wishes. /// /// Since Adorners are UIElements, they can respond to input events. /// public abstract class Adorner : FrameworkElement { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors ////// Constructor /// protected Adorner(UIElement adornedElement) { if (adornedElement == null) throw new ArgumentNullException("adornedElement"); _adornedElement = adornedElement; _isClipEnabled = false; // Bug 1383424: We need to make sure our FlowDirection is always that of our adorned element. // Need to allow derived class constructor to execute first Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Normal, new DispatcherOperationCallback(CreateFlowDirectionBinding), this); } #endregion Constructors //------------------------------------------------------ // // Protected Methods // //----------------------------------------------------- #region Protected Methods ////// Measure adorner. Default behavior is to size to match the adorned element. /// protected override Size MeasureOverride(Size constraint) { Size desiredSize; desiredSize = new Size(AdornedElement.RenderSize.Width, AdornedElement.RenderSize.Height); int count = this.VisualChildrenCount; for (int i = 0; i < count; i++) { UIElement ch = this.GetVisualChild(i) as UIElement; if (ch != null) { ch.Measure(desiredSize); } } return desiredSize; } ////// Override of ///. /// null ////// Clip gets generated before transforms are applied, which means that /// Adorners can get inappropriately clipped if they draw outside of the bounding rect /// of the element they're adorning. This is against the Adorner philosophy of being /// topmost, so we choose to ignore clip instead. protected override Geometry GetLayoutClip(Size layoutSlotSize) { return null; } #endregion Protected Methods //------------------------------------------------------ // // Public Methods // //------------------------------------------------------ #region Public Methods ////// 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 virtual GeneralTransform GetDesiredTransform(GeneralTransform transform) { return transform; } #endregion Public Methods //----------------------------------------------------- // // Public Properties // //------------------------------------------------------ #region Public Properties ////// Gets or sets the clip of this Visual. /// Needed by AdornerLayer /// internal Geometry AdornerClip { get { return Clip; } set { Clip = value; } } ////// Gets or sets the transform of this Visual. /// Needed by AdornerLayer /// internal Transform AdornerTransform { get { return RenderTransform; } set { RenderTransform = value; } } ////// UIElement this Adorner adorns. /// public UIElement AdornedElement { get { return _adornedElement; } } ////// If set to true, the adorner will be clipped using the same clip geometry as the /// AdornedElement. This is expensive, and therefore should not normally be used. /// Defaults to false. /// public bool IsClipEnabled { get { return _isClipEnabled; } set { _isClipEnabled = value; InvalidateArrange(); AdornerLayer.GetAdornerLayer(_adornedElement).InvalidateArrange(); } } #endregion Public Properties //----------------------------------------------------- // // Private Methods // //----------------------------------------------------- #region Private Methods // Callback for binding the FlowDirection property. private static object CreateFlowDirectionBinding(object o) { Adorner adorner = (Adorner)o; Binding binding = new Binding("FlowDirection"); binding.Mode = BindingMode.OneWay; binding.Source = adorner.AdornedElement; adorner.SetBinding(FlowDirectionProperty, binding); return null; } ////// Says if the Adorner needs update based on the /// previously cached size if the AdornedElement. /// internal virtual bool NeedsUpdate(Size oldSize) { return !DoubleUtil.AreClose(AdornedElement.RenderSize, oldSize); } #endregion Private Methods //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Fields private readonly UIElement _adornedElement; private bool _isClipEnabled; #endregion Private Fields } } // 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
- WindowsTitleBar.cs
- Calendar.cs
- ParserStreamGeometryContext.cs
- LoadedOrUnloadedOperation.cs
- SerializationHelper.cs
- StreamGeometry.cs
- BoundsDrawingContextWalker.cs
- PartialList.cs
- CustomAttributeSerializer.cs
- EntityDataSourceDataSelection.cs
- NetworkInformationPermission.cs
- ValidationVisibilityAttribute.cs
- ToolStripDropDown.cs
- InvokePatternIdentifiers.cs
- DbDataAdapter.cs
- BrowserPolicyValidator.cs
- AtomMaterializerLog.cs
- TabControlDesigner.cs
- FlowchartStart.xaml.cs
- CompatibleComparer.cs
- RootCodeDomSerializer.cs
- XmlSchemaComplexContent.cs
- SoapTypeAttribute.cs
- GZipDecoder.cs
- ImageCollectionEditor.cs
- RuleSettings.cs
- objectquery_tresulttype.cs
- HttpGetClientProtocol.cs
- BitmapEffectGeneralTransform.cs
- BindingMAnagerBase.cs
- XslNumber.cs
- MailBnfHelper.cs
- InputBinder.cs
- HandlerBase.cs
- XmlDocumentSerializer.cs
- CachedCompositeFamily.cs
- SettingsPropertyValue.cs
- TaiwanCalendar.cs
- CategoryNameCollection.cs
- odbcmetadatacolumnnames.cs
- HitTestResult.cs
- TemplateModeChangedEventArgs.cs
- HtmlLink.cs
- UnionCodeGroup.cs
- Policy.cs
- SqlUtils.cs
- AsyncStreamReader.cs
- CompositeKey.cs
- IndexerNameAttribute.cs
- XXXInfos.cs
- Int16Converter.cs
- AsymmetricSecurityBindingElement.cs
- DashStyle.cs
- ReachIDocumentPaginatorSerializer.cs
- DateTimeUtil.cs
- PageHandlerFactory.cs
- WindowsBrush.cs
- XmlDocumentFragment.cs
- SequentialWorkflowHeaderFooter.cs
- AutomationPatternInfo.cs
- SQLUtility.cs
- GC.cs
- ExceptionDetail.cs
- CommandBindingCollection.cs
- ParallelTimeline.cs
- ComponentDispatcher.cs
- SerializationStore.cs
- PlainXmlWriter.cs
- CombinedGeometry.cs
- MetadataPropertyvalue.cs
- FlowStep.cs
- ZipFileInfo.cs
- DisposableCollectionWrapper.cs
- XmlSchemaInfo.cs
- EncoderReplacementFallback.cs
- InternalDispatchObject.cs
- PassportIdentity.cs
- HierarchicalDataBoundControlAdapter.cs
- NamedPermissionSet.cs
- HtmlForm.cs
- SystemParameters.cs
- InternalPolicyElement.cs
- XmlIterators.cs
- StreamGeometry.cs
- DashStyle.cs
- FormClosedEvent.cs
- CompositeControlDesigner.cs
- UrlPath.cs
- ExpandedWrapper.cs
- AnnotationHighlightLayer.cs
- EditingCoordinator.cs
- EncryptedData.cs
- StrokeNodeEnumerator.cs
- BrushMappingModeValidation.cs
- CatalogZone.cs
- Matrix3D.cs
- Random.cs
- MergeFilterQuery.cs
- ViewStateAttachedPropertyFeature.cs
- FileVersion.cs