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
- AdornerLayer.cs
- ImageSource.cs
- Column.cs
- ResourcePart.cs
- PlatformCulture.cs
- ProfilePropertySettings.cs
- _ProxyChain.cs
- PointHitTestResult.cs
- MenuTracker.cs
- MasterPageParser.cs
- FlowPosition.cs
- SqlDelegatedTransaction.cs
- WebColorConverter.cs
- _ContextAwareResult.cs
- GridView.cs
- SqlDesignerDataSourceView.cs
- FileDialog_Vista_Interop.cs
- HMACSHA512.cs
- WCFBuildProvider.cs
- ProfileGroupSettingsCollection.cs
- VirtualizingPanel.cs
- WindowsFormsHelpers.cs
- ParentQuery.cs
- XsdDateTime.cs
- LicenseException.cs
- SemanticKeyElement.cs
- HttpListenerElement.cs
- DynamicPropertyHolder.cs
- ValueCollectionParameterReader.cs
- mediapermission.cs
- GridItem.cs
- HtmlMobileTextWriter.cs
- EdmPropertyAttribute.cs
- ZoneButton.cs
- SettingsPropertyCollection.cs
- TokenFactoryBase.cs
- ImpersonationContext.cs
- XamlStyleSerializer.cs
- TextDpi.cs
- TextEndOfLine.cs
- TableLayoutStyle.cs
- WmlListAdapter.cs
- CounterSet.cs
- SqlCacheDependencySection.cs
- DataServiceRequestArgs.cs
- SuppressMergeCheckAttribute.cs
- NullableBoolConverter.cs
- HtmlTableRowCollection.cs
- PropertyPathConverter.cs
- DataGridCellClipboardEventArgs.cs
- KeyedByTypeCollection.cs
- ScriptManager.cs
- Base64Decoder.cs
- MemberDescriptor.cs
- ObjectItemNoOpAssemblyLoader.cs
- OletxTransactionFormatter.cs
- ViewGenerator.cs
- ChannelFactoryBase.cs
- InternalException.cs
- Environment.cs
- BasicExpressionVisitor.cs
- HtmlLink.cs
- SpecialNameAttribute.cs
- PreservationFileReader.cs
- ProfileSection.cs
- NullableLongAverageAggregationOperator.cs
- RelationshipSet.cs
- AlignmentYValidation.cs
- DataGridViewCellStyleConverter.cs
- SaveFileDialog.cs
- XmlBaseReader.cs
- FunctionImportElement.cs
- PerspectiveCamera.cs
- ActivityBuilder.cs
- EntityDataSourceChangingEventArgs.cs
- SQLStringStorage.cs
- StretchValidation.cs
- CompModSwitches.cs
- Hashtable.cs
- MemberListBinding.cs
- ResXFileRef.cs
- SoapClientProtocol.cs
- AddressHeader.cs
- xml.cs
- XmlProcessingInstruction.cs
- EditorZoneBase.cs
- Property.cs
- ProcessHostFactoryHelper.cs
- SafeSecurityHandles.cs
- ModuleBuilder.cs
- webbrowsersite.cs
- XmlNodeReader.cs
- QueryOperatorEnumerator.cs
- BrowserCapabilitiesCompiler.cs
- FixedSOMTableRow.cs
- CodeTypeMember.cs
- RuleConditionDialog.Designer.cs
- RightsManagementEncryptedStream.cs
- PerformanceCounterManager.cs
- ReadOnlyHierarchicalDataSourceView.cs