Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / 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
- StorageAssociationTypeMapping.cs
- EditorZoneBase.cs
- SystemResourceHost.cs
- DataSysAttribute.cs
- VerticalAlignConverter.cs
- ModelPropertyDescriptor.cs
- Package.cs
- OleDbErrorCollection.cs
- TypeDependencyAttribute.cs
- DataGridParentRows.cs
- SqlRowUpdatingEvent.cs
- SecureStringHasher.cs
- RectangleGeometry.cs
- filewebrequest.cs
- ReverseInheritProperty.cs
- BlockUIContainer.cs
- Typography.cs
- EnvironmentPermission.cs
- XmlAttributeCache.cs
- ContentPresenter.cs
- ConfigXmlSignificantWhitespace.cs
- RuleRefElement.cs
- Site.cs
- HelpInfo.cs
- DispatcherFrame.cs
- TextTabProperties.cs
- KeyTimeConverter.cs
- TextBoxAutomationPeer.cs
- WebPartDisplayMode.cs
- DragEvent.cs
- BitmapEffect.cs
- DataGridItem.cs
- NativeMethods.cs
- GeometryDrawing.cs
- ObjectListCommandsPage.cs
- ListItemCollection.cs
- SystemInformation.cs
- QueryAsyncResult.cs
- ResourceExpressionBuilder.cs
- iisPickupDirectory.cs
- ExternalException.cs
- IndicFontClient.cs
- cookie.cs
- StoreContentChangedEventArgs.cs
- UIElementHelper.cs
- MissingManifestResourceException.cs
- ArraySubsetEnumerator.cs
- XmlSchemaSimpleTypeList.cs
- RTTypeWrapper.cs
- ManifestResourceInfo.cs
- RemotingException.cs
- ModulesEntry.cs
- Column.cs
- NamespaceInfo.cs
- PolygonHotSpot.cs
- ClassHandlersStore.cs
- ThumbButtonInfoCollection.cs
- OdbcException.cs
- TextBox.cs
- CodeExporter.cs
- MultiDataTrigger.cs
- AssociatedControlConverter.cs
- SqlUserDefinedAggregateAttribute.cs
- DiscriminatorMap.cs
- ToolStripSettings.cs
- DataGridView.cs
- TableItemPatternIdentifiers.cs
- Model3DGroup.cs
- HtmlFormParameterReader.cs
- TrackBarRenderer.cs
- FilterElement.cs
- KerberosSecurityTokenProvider.cs
- ColorConverter.cs
- BatchParser.cs
- ResXBuildProvider.cs
- OdbcDataAdapter.cs
- TranslateTransform3D.cs
- HasCopySemanticsAttribute.cs
- ValidationSummary.cs
- QilPatternFactory.cs
- XmlNodeChangedEventArgs.cs
- TypeToArgumentTypeConverter.cs
- IfAction.cs
- FlowDocumentPaginator.cs
- AttachedPropertyBrowsableForChildrenAttribute.cs
- DefaultPropertyAttribute.cs
- UseManagedPresentationBindingElement.cs
- HtmlTableCell.cs
- ListBoxAutomationPeer.cs
- ListItemCollection.cs
- TypeDescriptionProviderAttribute.cs
- FixedTextView.cs
- X509CertificateCollection.cs
- StrokeDescriptor.cs
- TypedDataSourceCodeGenerator.cs
- BitmapEffectInput.cs
- safex509handles.cs
- Confirm.cs
- LayoutEditorPart.cs
- XmlC14NWriter.cs