Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / MS / Internal / PtsHost / PageVisual.cs / 1305600 / PageVisual.cs
//---------------------------------------------------------------------------- // // Copyright (C) Microsoft Corporation. All rights reserved. // // File: PageVisual.cs // // Description: Visual representing a PTS page. // // History: // 11/11/2003 : [....] - created. // //--------------------------------------------------------------------------- using System; using System.Diagnostics; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Windows; using System.Windows.Controls; using System.Windows.Media; using System.Windows.Threading; namespace MS.Internal.PtsHost { // --------------------------------------------------------------------- // Visual representing a PTS page. // --------------------------------------------------------------------- internal class PageVisual : DrawingVisual, IContentHost { // ------------------------------------------------------------------ // Create a visual representing a PTS page. // ----------------------------------------------------------------- internal PageVisual(FlowDocumentPage owner) { _owner = new WeakReference(owner); } // ------------------------------------------------------------------ // Set information about background that is necessary for rendering // process. // // backgroundBrush - The background brush used for background. // renderBounds - Render bounds of the visual. // ------------------------------------------------------------------ internal void DrawBackground(Brush backgroundBrush, Rect renderBounds) { if (_backgroundBrush != backgroundBrush || _renderBounds != renderBounds) { _backgroundBrush = backgroundBrush; _renderBounds = renderBounds; // Open DrawingContext and draw background. // If background is not set, Open will clean the render data, but it // will preserve visual children. using (DrawingContext dc = RenderOpen()) { if (_backgroundBrush != null) { dc.DrawRectangle(_backgroundBrush, null, _renderBounds); } else { dc.DrawRectangle(Brushes.Transparent, null, _renderBounds); } } } } // ----------------------------------------------------------------- // Get/Set visual child. // ------------------------------------------------------------------ internal Visual Child { get { VisualCollection vc = this.Children; Debug.Assert(vc.Count <= 1); return (vc.Count == 0) ? null : vc[0]; } set { VisualCollection vc = this.Children; Debug.Assert(vc.Count <= 1); if (vc.Count == 0) { vc.Add(value); } else if (vc[0] != value) { vc[0] = value; } // else Visual child is the same as already stored; do nothing. } } // ----------------------------------------------------------------- // Clear its DrawingContext // Opening and closing a DrawingContext, clears it. // ----------------------------------------------------------------- internal void ClearDrawingContext() { DrawingContext ctx = this.RenderOpen(); if(ctx != null) ctx.Close(); } //------------------------------------------------------------------- // // IContentHost Members // //-------------------------------------------------------------------- #region IContentHost Members ////// IInputElement IContentHost.InputHitTest(Point point) { IContentHost host = _owner.Target as IContentHost; if (host != null) { return host.InputHitTest(point); } return null; } ////// /// ReadOnlyCollection/// IContentHost.GetRectangles(ContentElement child) { IContentHost host = _owner.Target as IContentHost; if (host != null) { return host.GetRectangles(child); } return new ReadOnlyCollection (new List (0)); } /// /// IEnumerator/// IContentHost.HostedElements { get { IContentHost host = _owner.Target as IContentHost; if (host != null) { return host.HostedElements; } return null; } } /// /// void IContentHost.OnChildDesiredSizeChanged(UIElement child) { IContentHost host = _owner.Target as IContentHost; if (host != null) { host.OnChildDesiredSizeChanged(child); } } #endregion IContentHost Members // ----------------------------------------------------------------- // Reference to DocumentPage that owns this visual. // ------------------------------------------------------------------ private readonly WeakReference _owner; // ------------------------------------------------------------------ // Brush used for background rendering. // ----------------------------------------------------------------- private Brush _backgroundBrush; // ------------------------------------------------------------------ // Render bounds. // ----------------------------------------------------------------- private Rect _renderBounds; } } // 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
- DocumentSchemaValidator.cs
- CloseCollectionAsyncResult.cs
- Trace.cs
- GraphicsState.cs
- ToolStripSeparator.cs
- ResourceAttributes.cs
- SoapServerMethod.cs
- TrustManagerMoreInformation.cs
- XamlTreeBuilderBamlRecordWriter.cs
- uribuilder.cs
- ControlCollection.cs
- SmiContextFactory.cs
- InstanceView.cs
- OracleString.cs
- RenderData.cs
- Soap12ProtocolImporter.cs
- Substitution.cs
- Switch.cs
- CodeIterationStatement.cs
- WebPartEditorCancelVerb.cs
- DbParameterCollectionHelper.cs
- ScrollPattern.cs
- Latin1Encoding.cs
- TemplateManager.cs
- IntegerFacetDescriptionElement.cs
- PointLightBase.cs
- ThreadStartException.cs
- SystemIcons.cs
- Solver.cs
- AdRotator.cs
- securestring.cs
- UdpDiscoveryEndpointProvider.cs
- StateMachineWorkflowInstance.cs
- DataBoundLiteralControl.cs
- RegexGroupCollection.cs
- XamlVector3DCollectionSerializer.cs
- ColumnHeaderConverter.cs
- AssociationSetMetadata.cs
- ExpandCollapsePattern.cs
- XmlCustomFormatter.cs
- TemplateEditingFrame.cs
- SocketException.cs
- TextBreakpoint.cs
- QilXmlReader.cs
- ExpressionNormalizer.cs
- SchemaComplexType.cs
- ViewManager.cs
- validation.cs
- ClientData.cs
- XmlSchemaImporter.cs
- DoubleStorage.cs
- BaseTemplateCodeDomTreeGenerator.cs
- Validator.cs
- BamlLocalizableResource.cs
- UpdateTracker.cs
- ParserOptions.cs
- Image.cs
- ModifiableIteratorCollection.cs
- AddInAttribute.cs
- LocalizationParserHooks.cs
- WrappedIUnknown.cs
- RichTextBoxAutomationPeer.cs
- DictionaryEntry.cs
- SrgsNameValueTag.cs
- CompensationHandlingFilter.cs
- SoapHeaders.cs
- MenuStrip.cs
- LogicalExpressionEditor.cs
- TextAutomationPeer.cs
- SiteMapDataSource.cs
- DirectoryInfo.cs
- CommonDialog.cs
- COM2Properties.cs
- InlinedAggregationOperatorEnumerator.cs
- GridViewCancelEditEventArgs.cs
- OleServicesContext.cs
- VisualBasicSettings.cs
- WindowsGraphics2.cs
- MultilineStringConverter.cs
- Transactions.cs
- DocumentSchemaValidator.cs
- mediaeventargs.cs
- Misc.cs
- Queue.cs
- GenerateTemporaryAssemblyTask.cs
- XmlWrappingReader.cs
- ValueUtilsSmi.cs
- RootBrowserWindowAutomationPeer.cs
- InplaceBitmapMetadataWriter.cs
- SmtpNtlmAuthenticationModule.cs
- LineVisual.cs
- TemplateColumn.cs
- MessageContractAttribute.cs
- WebPartTracker.cs
- DataGridColumnCollection.cs
- GridView.cs
- WsatTransactionHeader.cs
- XsdValidatingReader.cs
- WindowsListView.cs
- Utilities.cs