Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / 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
- TempEnvironment.cs
- _SafeNetHandles.cs
- CurrencyManager.cs
- XmlLoader.cs
- UnaryExpression.cs
- WindowsGraphicsWrapper.cs
- HMACMD5.cs
- ProfileSection.cs
- bindurihelper.cs
- PointAnimationClockResource.cs
- HttpProfileBase.cs
- X509UI.cs
- SqlUserDefinedAggregateAttribute.cs
- SByte.cs
- TimeStampChecker.cs
- StatusBarAutomationPeer.cs
- WebPartTransformerCollection.cs
- SparseMemoryStream.cs
- ElementProxy.cs
- TreeNodeStyleCollection.cs
- GridViewRow.cs
- RoleBoolean.cs
- StringHelper.cs
- Label.cs
- SqlAliasesReferenced.cs
- StartUpEventArgs.cs
- BigInt.cs
- ProviderBase.cs
- XmlSchemaElement.cs
- GridProviderWrapper.cs
- LookupBindingPropertiesAttribute.cs
- MoveSizeWinEventHandler.cs
- CheckBox.cs
- IndicFontClient.cs
- NativeMethodsCLR.cs
- ChunkedMemoryStream.cs
- HtmlTextArea.cs
- ButtonField.cs
- GreaterThanOrEqual.cs
- XmlSchemaProviderAttribute.cs
- XmlElementCollection.cs
- XmlIlGenerator.cs
- WebPartZoneBase.cs
- RSAOAEPKeyExchangeFormatter.cs
- PositiveTimeSpanValidator.cs
- JpegBitmapEncoder.cs
- StorageConditionPropertyMapping.cs
- RoutedEvent.cs
- documentsequencetextview.cs
- DocumentEventArgs.cs
- Crypto.cs
- CredentialCache.cs
- _HeaderInfo.cs
- ObjectResult.cs
- UIElementCollection.cs
- basecomparevalidator.cs
- RuleEngine.cs
- TableHeaderCell.cs
- PeerCredential.cs
- ExceptionUtil.cs
- CodePageUtils.cs
- BindingCollection.cs
- SafeNativeMethodsCLR.cs
- SwitchAttribute.cs
- FixUpCollection.cs
- DocumentReference.cs
- Executor.cs
- SafeLocalMemHandle.cs
- SqlException.cs
- ConditionCollection.cs
- WebPartChrome.cs
- GetFileNameResult.cs
- XsdDuration.cs
- ProtectedUri.cs
- ListItemCollection.cs
- DocumentSchemaValidator.cs
- CodeLinePragma.cs
- ColumnClickEvent.cs
- MetadataElement.cs
- ErrorFormatterPage.cs
- FlowLayout.cs
- LoginDesignerUtil.cs
- ContainerVisual.cs
- CallContext.cs
- documentsequencetextpointer.cs
- ResetableIterator.cs
- DesignTimeTemplateParser.cs
- SelectorItemAutomationPeer.cs
- XmlSchemaCompilationSettings.cs
- IISUnsafeMethods.cs
- HttpDigestClientElement.cs
- DetailsViewDeleteEventArgs.cs
- WebPartPersonalization.cs
- AudioLevelUpdatedEventArgs.cs
- EntityClassGenerator.cs
- DiscoveryDocumentReference.cs
- ISFClipboardData.cs
- UpDownBase.cs
- ConfigViewGenerator.cs
- JsonSerializer.cs