Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / wpf / src / Core / CSharp / System / Windows / Media / RenderDataDrawingContext.cs / 1 / RenderDataDrawingContext.cs
//------------------------------------------------------------------------------ // Microsoft Avalon // Copyright (c) Microsoft Corporation, 2003 // // File: RenderDataDrawingContext.cs // // History: // GSchneid: 04/19/2003 // Created it based on the RenderDataDrawingContext used in the AvPhat branch. // adsmith: 07/02/2003 // Renamed to RenderDataDrawingContext, which derives from DrawingContext // adsmith: 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: // GSchneid: 04/19/2003 // Created it based on the RenderDataDrawingContext used in the AvPhat branch. // adsmith: 07/02/2003 // Renamed to RenderDataDrawingContext, which derives from DrawingContext // adsmith: 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
- safemediahandle.cs
- ColorMap.cs
- WinFormsSecurity.cs
- ListBoxItemWrapperAutomationPeer.cs
- RuleProcessor.cs
- ObjectStateEntryDbUpdatableDataRecord.cs
- OrderedDictionary.cs
- TreeView.cs
- AssociatedControlConverter.cs
- DrawingGroupDrawingContext.cs
- XmlHierarchicalEnumerable.cs
- UndoManager.cs
- BasicHttpMessageSecurity.cs
- OpCodes.cs
- ChannelManagerService.cs
- XsltQilFactory.cs
- DictionarySurrogate.cs
- oledbconnectionstring.cs
- FilePrompt.cs
- XsdBuildProvider.cs
- ContentHostHelper.cs
- Native.cs
- EventProxy.cs
- GenericQueueSurrogate.cs
- AttachmentCollection.cs
- SiteMapNodeCollection.cs
- Monitor.cs
- CustomAttributeBuilder.cs
- ProfilePropertyNameValidator.cs
- EasingFunctionBase.cs
- UInt32Converter.cs
- BitSet.cs
- DisposableCollectionWrapper.cs
- FillBehavior.cs
- WebBrowserNavigatedEventHandler.cs
- Choices.cs
- VectorValueSerializer.cs
- TypeSystem.cs
- SqlBulkCopy.cs
- SymbolUsageManager.cs
- CfgParser.cs
- CharAnimationBase.cs
- InstancePersistenceException.cs
- AspCompat.cs
- _Events.cs
- WindowsToolbar.cs
- NullableDecimalMinMaxAggregationOperator.cs
- EntityDataSourceReferenceGroup.cs
- Imaging.cs
- WebServiceHost.cs
- WebPartMinimizeVerb.cs
- BevelBitmapEffect.cs
- CreateUserWizardStep.cs
- IPipelineRuntime.cs
- RepeatBehavior.cs
- RawStylusInputReport.cs
- SqlXml.cs
- LambdaCompiler.Expressions.cs
- DefaultSerializationProviderAttribute.cs
- CodeGotoStatement.cs
- ObjectDataSourceFilteringEventArgs.cs
- SchemaImporterExtensionElementCollection.cs
- DataGridViewAutoSizeColumnModeEventArgs.cs
- Exceptions.cs
- DBCommand.cs
- HandlerMappingMemo.cs
- Ticks.cs
- TextSelectionHelper.cs
- MachineSettingsSection.cs
- CommandField.cs
- DataControlFieldHeaderCell.cs
- CollectionViewProxy.cs
- TreeNode.cs
- GeneralTransformCollection.cs
- TextWriter.cs
- XmlQueryContext.cs
- XmlSiteMapProvider.cs
- XamlParser.cs
- InvokeGenerator.cs
- ObjectDataSourceFilteringEventArgs.cs
- PrinterSettings.cs
- FixedTextSelectionProcessor.cs
- Compilation.cs
- RemotingException.cs
- Utils.cs
- OleDbTransaction.cs
- HtmlInputReset.cs
- MsmqProcessProtocolHandler.cs
- RemoteWebConfigurationHostServer.cs
- TextDecorationUnitValidation.cs
- InfoCardCryptoHelper.cs
- UInt16Storage.cs
- ExpressionBuilderCollection.cs
- QueryOptionExpression.cs
- SqlDataAdapter.cs
- ToolBarOverflowPanel.cs
- SafeCloseHandleCritical.cs
- __Filters.cs
- DesignerPainter.cs
- SQLSingle.cs