Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / wpf / src / Framework / MS / Internal / PtsHost / PageVisual.cs / 1 / PageVisual.cs
//---------------------------------------------------------------------------- // // Copyright (C) Microsoft Corporation. All rights reserved. // // File: PageVisual.cs // // Description: Visual representing a PTS page. // // History: // 11/11/2003 : grzegorz - 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. //---------------------------------------------------------------------------- // // Copyright (C) Microsoft Corporation. All rights reserved. // // File: PageVisual.cs // // Description: Visual representing a PTS page. // // History: // 11/11/2003 : grzegorz - 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
- NonBatchDirectoryCompiler.cs
- UIElementIsland.cs
- TextDocumentView.cs
- ComMethodElementCollection.cs
- CompilerErrorCollection.cs
- Page.cs
- FrameworkTextComposition.cs
- StringTraceRecord.cs
- CodeNamespaceImportCollection.cs
- EncryptedPackageFilter.cs
- ResponseStream.cs
- WeakReferenceKey.cs
- FormsAuthenticationCredentials.cs
- RsaKeyGen.cs
- Int16Converter.cs
- BitmapSizeOptions.cs
- EditingScope.cs
- Color.cs
- EmissiveMaterial.cs
- _ProxyChain.cs
- HttpDictionary.cs
- StatusBarPanel.cs
- EntitySqlQueryBuilder.cs
- ImageButton.cs
- IDReferencePropertyAttribute.cs
- WindowsImpersonationContext.cs
- MemberInfoSerializationHolder.cs
- ItemsControlAutomationPeer.cs
- NegotiateStream.cs
- GrammarBuilderRuleRef.cs
- PeerCollaborationPermission.cs
- QueryResult.cs
- RemotingSurrogateSelector.cs
- StreamGeometry.cs
- FileDialogCustomPlace.cs
- Point3DAnimationBase.cs
- ControlParameter.cs
- OrthographicCamera.cs
- MutexSecurity.cs
- PerfCounters.cs
- HtmlInputRadioButton.cs
- Accessible.cs
- CompilerScopeManager.cs
- PolyQuadraticBezierSegmentFigureLogic.cs
- KoreanCalendar.cs
- unsafeIndexingFilterStream.cs
- CreateUserWizard.cs
- OutgoingWebResponseContext.cs
- DataProtectionSecurityStateEncoder.cs
- PageCatalogPart.cs
- PlatformCulture.cs
- BinaryEditor.cs
- WebConfigurationManager.cs
- SqlDependencyUtils.cs
- DataFieldConverter.cs
- BamlResourceDeserializer.cs
- ConfigurationStrings.cs
- ServiceCredentialsSecurityTokenManager.cs
- EventEntry.cs
- Stack.cs
- FeatureSupport.cs
- NativeMethods.cs
- XmlSerializerFactory.cs
- SQLByte.cs
- SmtpSpecifiedPickupDirectoryElement.cs
- X509CertificateCollection.cs
- HtmlTableCellCollection.cs
- PageThemeCodeDomTreeGenerator.cs
- SqlUtil.cs
- StylusTip.cs
- VariableModifiersHelper.cs
- PrimarySelectionAdorner.cs
- PathFigure.cs
- EventLogPropertySelector.cs
- QuestionEventArgs.cs
- ToolStripRendererSwitcher.cs
- SourceFileBuildProvider.cs
- ProviderUtil.cs
- QueryOptionExpression.cs
- TaskbarItemInfo.cs
- TextLine.cs
- WsdlInspector.cs
- SystemInfo.cs
- BooleanExpr.cs
- WaitHandle.cs
- ParseHttpDate.cs
- InvalidEnumArgumentException.cs
- ComplexTypeEmitter.cs
- InternalTransaction.cs
- _SecureChannel.cs
- DLinqDataModelProvider.cs
- SmtpCommands.cs
- X509KeyIdentifierClauseType.cs
- XsdDuration.cs
- Compress.cs
- ScrollItemPatternIdentifiers.cs
- EventProviderWriter.cs
- DeviceContext.cs
- WorkflowDefinitionDispenser.cs
- ReferenceSchema.cs