Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / 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
- DataContractSerializerSection.cs
- ThreadLocal.cs
- FamilyMapCollection.cs
- BaseCAMarshaler.cs
- DataPagerFieldItem.cs
- ExtensibleClassFactory.cs
- AccessDataSource.cs
- LinearGradientBrush.cs
- WebHttpElement.cs
- Helper.cs
- ComAdminInterfaces.cs
- MarkerProperties.cs
- TextElementEnumerator.cs
- Trigger.cs
- InsufficientMemoryException.cs
- ConnectionPointCookie.cs
- ISCIIEncoding.cs
- TemplatedWizardStep.cs
- RemotingServices.cs
- DesignerLoader.cs
- WS2007HttpBindingCollectionElement.cs
- RuntimeCompatibilityAttribute.cs
- Selection.cs
- ButtonBase.cs
- ActivityTrace.cs
- SmiConnection.cs
- MatrixConverter.cs
- Visual3D.cs
- TagPrefixInfo.cs
- OuterGlowBitmapEffect.cs
- ApplicationServiceHelper.cs
- XmlReflectionImporter.cs
- CustomCredentialPolicy.cs
- CodeCommentStatementCollection.cs
- ThemeInfoAttribute.cs
- OleDbCommandBuilder.cs
- XmlAttributeHolder.cs
- RadialGradientBrush.cs
- DependencyObject.cs
- BinarySerializer.cs
- TileBrush.cs
- CriticalHandle.cs
- WorkItem.cs
- webproxy.cs
- KeyValuePair.cs
- IPEndPoint.cs
- ClusterSafeNativeMethods.cs
- util.cs
- PixelShader.cs
- TextUtf8RawTextWriter.cs
- Rfc4050KeyFormatter.cs
- InfoCardConstants.cs
- KerberosReceiverSecurityToken.cs
- X509DefaultServiceCertificateElement.cs
- ListView.cs
- FormsAuthenticationCredentials.cs
- BindingMemberInfo.cs
- BehaviorDragDropEventArgs.cs
- GenericEnumConverter.cs
- XmlAttributeAttribute.cs
- _Semaphore.cs
- XmlDocumentSchema.cs
- DoWorkEventArgs.cs
- FunctionParameter.cs
- OperationFormatStyle.cs
- SafeLibraryHandle.cs
- DynamicRouteExpression.cs
- StrongName.cs
- JsonByteArrayDataContract.cs
- NamedElement.cs
- Focus.cs
- StructuredTypeEmitter.cs
- QilTypeChecker.cs
- ScalarConstant.cs
- VarRemapper.cs
- ConnectionPoint.cs
- DelimitedListTraceListener.cs
- FormViewPagerRow.cs
- SystemColors.cs
- WebResourceAttribute.cs
- PropertySegmentSerializationProvider.cs
- SecurityAttributeGenerationHelper.cs
- DynamicMethod.cs
- WpfSharedXamlSchemaContext.cs
- PeerPresenceInfo.cs
- NominalTypeEliminator.cs
- CodeDelegateCreateExpression.cs
- ClientBuildManager.cs
- SpotLight.cs
- EmulateRecognizeCompletedEventArgs.cs
- StylusButtonEventArgs.cs
- ToolStripPanelRow.cs
- OleDbSchemaGuid.cs
- ConfigurationStrings.cs
- WebRequest.cs
- SoapMessage.cs
- ToolStripScrollButton.cs
- TimeZoneNotFoundException.cs
- SqlDelegatedTransaction.cs
- RecordsAffectedEventArgs.cs