Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / Media / RenderDataDrawingContext.cs / 1305600 / RenderDataDrawingContext.cs
//------------------------------------------------------------------------------ // Microsoft Avalon // Copyright (c) Microsoft Corporation, 2003 // // File: RenderDataDrawingContext.cs // // History: // [....]: 04/19/2003 // Created it based on the RenderDataDrawingContext used in the AvPhat branch. // [....]: 07/02/2003 // Renamed to RenderDataDrawingContext, which derives from DrawingContext // [....]: 07/02/2003 // Renamed to RenderDataDrawingContext, which derives from DrawingContext // This class no longer understand Visuals, and simply produces RenderData. // //----------------------------------------------------------------------------- using System; using System.Collections.Generic; using System.Security.Permissions; using System.Windows; using System.Windows.Threading; using System.Windows.Media.Animation; using System.Windows.Media; using System.Windows.Media.Composition; using System.Diagnostics; using MS.Internal; using System.Security; //----------------------------------------------------------------------------- // This section lists various things that we could improve on the DrawingContxt // class. // // - Remove the isAnimated flag from being propagated everywhere. Rather mark // the pail when we add an animated argument. //----------------------------------------------------------------------------- namespace System.Windows.Media { ////// Drawing context. /// internal partial class RenderDataDrawingContext : DrawingContext, IDisposable { #region Constructors ////// Creates a drawing context which is associated with a given Dispatcher /// internal RenderDataDrawingContext() { } #endregion Constructors #region Public Methods internal RenderData GetRenderData() { return _renderData; } ////// Closes the DrawingContext and flushes the content. /// Afterwards the DrawingContext can not be used anymore. /// This call does not require all Push calls to have been Popped. /// ////// This call is illegal if this object has already been closed or disposed. /// public override void Close() { VerifyApiNonstructuralChange(); ((IDisposable)this).Dispose(); } ////// This is the same as the Close call: /// Closes the DrawingContext and flushes the content. /// Afterwards the DrawingContext can not be used anymore. /// This call does not require all Push calls to have been Popped. /// ////// This call is illegal if this object has already been closed or disposed. /// protected override void DisposeCore() { if (!_disposed) { EnsureCorrectNesting(); CloseCore(_renderData); _disposed = true; } } #endregion Public Methods #region Protected Methods ////// CloseCore - Implemented be derivees to Close the context. /// This will only be called once (if ever) per instance. /// /// The render data produced by this RenderDataDrawingContext. protected virtual void CloseCore(RenderData renderData) {} #endregion Protected Methods #region Private Methods ////// EnsureRenderData - this method ensures that the _renderData variable is initialized. /// The render data's _buffer will be lazily instantiated via the Draw* methods which all /// call WriteDataRecord. /// private void EnsureRenderData() { if (_renderData == null) { _renderData = new RenderData(); } } ////// This verifies that the API can be called for access which doesn't affect structure. /// protected override void VerifyApiNonstructuralChange() { base.VerifyApiNonstructuralChange(); if (_disposed) { throw new ObjectDisposedException("RenderDataDrawingContext"); } } ////// This method checks if there were any Push calls that were not matched by /// the corresponding Pop. If this is the case, this method adds corresponding /// number of Pop instructions to the render data. /// private void EnsureCorrectNesting() { if (_renderData != null && _stackDepth > 0) { int stackDepth = _stackDepth; for (int i = 0; i < stackDepth; i++) { Pop(); } } _stackDepth = 0; } #endregion Private Methods #region Fields private RenderData _renderData; private bool _disposed; private int _stackDepth; #endregion Fields } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //------------------------------------------------------------------------------ // Microsoft Avalon // Copyright (c) Microsoft Corporation, 2003 // // File: RenderDataDrawingContext.cs // // History: // [....]: 04/19/2003 // Created it based on the RenderDataDrawingContext used in the AvPhat branch. // [....]: 07/02/2003 // Renamed to RenderDataDrawingContext, which derives from DrawingContext // [....]: 07/02/2003 // Renamed to RenderDataDrawingContext, which derives from DrawingContext // This class no longer understand Visuals, and simply produces RenderData. // //----------------------------------------------------------------------------- using System; using System.Collections.Generic; using System.Security.Permissions; using System.Windows; using System.Windows.Threading; using System.Windows.Media.Animation; using System.Windows.Media; using System.Windows.Media.Composition; using System.Diagnostics; using MS.Internal; using System.Security; //----------------------------------------------------------------------------- // This section lists various things that we could improve on the DrawingContxt // class. // // - Remove the isAnimated flag from being propagated everywhere. Rather mark // the pail when we add an animated argument. //----------------------------------------------------------------------------- namespace System.Windows.Media { ////// Drawing context. /// internal partial class RenderDataDrawingContext : DrawingContext, IDisposable { #region Constructors ////// Creates a drawing context which is associated with a given Dispatcher /// internal RenderDataDrawingContext() { } #endregion Constructors #region Public Methods internal RenderData GetRenderData() { return _renderData; } ////// Closes the DrawingContext and flushes the content. /// Afterwards the DrawingContext can not be used anymore. /// This call does not require all Push calls to have been Popped. /// ////// This call is illegal if this object has already been closed or disposed. /// public override void Close() { VerifyApiNonstructuralChange(); ((IDisposable)this).Dispose(); } ////// This is the same as the Close call: /// Closes the DrawingContext and flushes the content. /// Afterwards the DrawingContext can not be used anymore. /// This call does not require all Push calls to have been Popped. /// ////// This call is illegal if this object has already been closed or disposed. /// protected override void DisposeCore() { if (!_disposed) { EnsureCorrectNesting(); CloseCore(_renderData); _disposed = true; } } #endregion Public Methods #region Protected Methods ////// CloseCore - Implemented be derivees to Close the context. /// This will only be called once (if ever) per instance. /// /// The render data produced by this RenderDataDrawingContext. protected virtual void CloseCore(RenderData renderData) {} #endregion Protected Methods #region Private Methods ////// EnsureRenderData - this method ensures that the _renderData variable is initialized. /// The render data's _buffer will be lazily instantiated via the Draw* methods which all /// call WriteDataRecord. /// private void EnsureRenderData() { if (_renderData == null) { _renderData = new RenderData(); } } ////// This verifies that the API can be called for access which doesn't affect structure. /// protected override void VerifyApiNonstructuralChange() { base.VerifyApiNonstructuralChange(); if (_disposed) { throw new ObjectDisposedException("RenderDataDrawingContext"); } } ////// This method checks if there were any Push calls that were not matched by /// the corresponding Pop. If this is the case, this method adds corresponding /// number of Pop instructions to the render data. /// private void EnsureCorrectNesting() { if (_renderData != null && _stackDepth > 0) { int stackDepth = _stackDepth; for (int i = 0; i < stackDepth; i++) { Pop(); } } _stackDepth = 0; } #endregion Private Methods #region Fields private RenderData _renderData; private bool _disposed; private int _stackDepth; #endregion 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
- KeySplineConverter.cs
- NameValueFileSectionHandler.cs
- ListItemCollection.cs
- ServicePoint.cs
- MouseButtonEventArgs.cs
- LiteralTextParser.cs
- DNS.cs
- Application.cs
- GB18030Encoding.cs
- Condition.cs
- SessionIDManager.cs
- SmiSettersStream.cs
- XmlNodeChangedEventManager.cs
- PropertyMapper.cs
- SchemaElementDecl.cs
- StdRegProviderWrapper.cs
- XmlSchemaRedefine.cs
- PathParser.cs
- BuildProvidersCompiler.cs
- HttpApplicationFactory.cs
- ProxyWebPartManager.cs
- Renderer.cs
- MessageSecurityException.cs
- KeysConverter.cs
- SmtpReplyReader.cs
- TransformerInfoCollection.cs
- RangeBaseAutomationPeer.cs
- NamespaceQuery.cs
- CorrelationValidator.cs
- SqlFormatter.cs
- ProcessThread.cs
- RichTextBox.cs
- DataControlPagerLinkButton.cs
- AttributeSetAction.cs
- ColumnMapVisitor.cs
- GridViewColumnHeader.cs
- Expression.cs
- PermissionSetEnumerator.cs
- RootProfilePropertySettingsCollection.cs
- SqlTopReducer.cs
- UserPreferenceChangingEventArgs.cs
- FtpWebResponse.cs
- TemplateControlBuildProvider.cs
- SafeFileHandle.cs
- XmlSortKey.cs
- FrameworkTextComposition.cs
- DataFormats.cs
- ProviderUtil.cs
- BinaryFormatterWriter.cs
- PluralizationService.cs
- ReachPrintTicketSerializerAsync.cs
- Substitution.cs
- ChameleonKey.cs
- Roles.cs
- ShaderEffect.cs
- FilterableAttribute.cs
- CodeSnippetStatement.cs
- fixedPageContentExtractor.cs
- EngineSiteSapi.cs
- EmptyEnumerable.cs
- ControlTemplate.cs
- GcSettings.cs
- SqlConnectionFactory.cs
- MaterialGroup.cs
- ItemsPanelTemplate.cs
- TokenizerHelper.cs
- DependencyPropertyValueSerializer.cs
- Point.cs
- dsa.cs
- AsymmetricKeyExchangeDeformatter.cs
- TimeZone.cs
- DocumentGridContextMenu.cs
- FamilyMap.cs
- ConvertEvent.cs
- ErrorEventArgs.cs
- TemplateControl.cs
- COMException.cs
- ComplexType.cs
- ListViewTableCell.cs
- FunctionGenerator.cs
- ElementNotEnabledException.cs
- ColorConvertedBitmapExtension.cs
- xmlformatgeneratorstatics.cs
- ToolStripItemTextRenderEventArgs.cs
- InheritanceUI.cs
- TdsEnums.cs
- DefaultValidator.cs
- SecurityTokenTypes.cs
- ContainerControlDesigner.cs
- AsymmetricKeyExchangeFormatter.cs
- ServiceNameElement.cs
- EpmContentDeSerializerBase.cs
- CleanUpVirtualizedItemEventArgs.cs
- VirtualPathUtility.cs
- DataBindEngine.cs
- ContextQuery.cs
- EntityCommandExecutionException.cs
- FileDialog.cs
- InvalidProgramException.cs
- IODescriptionAttribute.cs