Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / CommonUI / System / Drawing / GraphicsContext.cs / 1 / GraphicsContext.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Drawing { using System; using System.Drawing.Drawing2D; using System.Diagnostics; ////// Contains information about the context of a Graphics object. /// internal class GraphicsContext : IDisposable { ////// The state that identifies the context. /// private int contextState; ////// The context's translate transform. /// private PointF transformOffset; ////// The context's clip region. /// private Region clipRegion; ////// The next context up the stack. /// private GraphicsContext nextContext; ////// The previous context down the stack. /// private GraphicsContext prevContext; ////// Flags that determines whether the context was created for a Graphics.Save() operation. /// This kind of contexts are cumulative across subsequent Save() calls so the top context /// info is cumulative. This is not the same for contexts created for a Graphics.BeginContainer() /// operation, in this case the new context information is reset. See Graphics.BeginContainer() /// and Graphics.Save() for more information. /// bool isCumulative; ////// Private constructor disallowed. /// private GraphicsContext() { } public GraphicsContext(Graphics g) { Matrix transform = g.Transform; if (!transform.IsIdentity) { float[] elements = transform.Elements; this.transformOffset.X = elements[4]; this.transformOffset.Y = elements[5]; } transform.Dispose(); Region clip = g.Clip; if (clip.IsInfinite(g)) { clip.Dispose(); } else { this.clipRegion = clip; } } ////// Disposes this and all contexts up the stack. /// public void Dispose() { Dispose(true); GC.SuppressFinalize(this); } ////// Disposes this and all contexts up the stack. /// public void Dispose(bool disposing) { if (this.nextContext != null) { // Dispose all contexts up the stack since they are relative to this one and its state will be invalid. this.nextContext.Dispose(); this.nextContext = null; } if (this.clipRegion != null) { this.clipRegion.Dispose(); this.clipRegion = null; } } ////// The state id representing the GraphicsContext. /// public int State { get { return this.contextState; } set { this.contextState = value; } } ////// The translate transform in the GraphicsContext. /// public PointF TransformOffset { get { return this.transformOffset; } } ////// The clipping region the GraphicsContext. /// public Region Clip { get { return this.clipRegion; } } ////// The next GraphicsContext object in the stack. /// public GraphicsContext Next { get { return this.nextContext; } set { this.nextContext = value; } } ////// The previous GraphicsContext object in the stack. /// public GraphicsContext Previous { get { return this.prevContext; } set { this.prevContext = value; } } ////// Determines whether this context is cumulative or not. See filed for more info. /// public bool IsCumulative { get { return this.isCumulative; } set { this.isCumulative = value; } } } } // 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. // //----------------------------------------------------------------------------- namespace System.Drawing { using System; using System.Drawing.Drawing2D; using System.Diagnostics; ////// Contains information about the context of a Graphics object. /// internal class GraphicsContext : IDisposable { ////// The state that identifies the context. /// private int contextState; ////// The context's translate transform. /// private PointF transformOffset; ////// The context's clip region. /// private Region clipRegion; ////// The next context up the stack. /// private GraphicsContext nextContext; ////// The previous context down the stack. /// private GraphicsContext prevContext; ////// Flags that determines whether the context was created for a Graphics.Save() operation. /// This kind of contexts are cumulative across subsequent Save() calls so the top context /// info is cumulative. This is not the same for contexts created for a Graphics.BeginContainer() /// operation, in this case the new context information is reset. See Graphics.BeginContainer() /// and Graphics.Save() for more information. /// bool isCumulative; ////// Private constructor disallowed. /// private GraphicsContext() { } public GraphicsContext(Graphics g) { Matrix transform = g.Transform; if (!transform.IsIdentity) { float[] elements = transform.Elements; this.transformOffset.X = elements[4]; this.transformOffset.Y = elements[5]; } transform.Dispose(); Region clip = g.Clip; if (clip.IsInfinite(g)) { clip.Dispose(); } else { this.clipRegion = clip; } } ////// Disposes this and all contexts up the stack. /// public void Dispose() { Dispose(true); GC.SuppressFinalize(this); } ////// Disposes this and all contexts up the stack. /// public void Dispose(bool disposing) { if (this.nextContext != null) { // Dispose all contexts up the stack since they are relative to this one and its state will be invalid. this.nextContext.Dispose(); this.nextContext = null; } if (this.clipRegion != null) { this.clipRegion.Dispose(); this.clipRegion = null; } } ////// The state id representing the GraphicsContext. /// public int State { get { return this.contextState; } set { this.contextState = value; } } ////// The translate transform in the GraphicsContext. /// public PointF TransformOffset { get { return this.transformOffset; } } ////// The clipping region the GraphicsContext. /// public Region Clip { get { return this.clipRegion; } } ////// The next GraphicsContext object in the stack. /// public GraphicsContext Next { get { return this.nextContext; } set { this.nextContext = value; } } ////// The previous GraphicsContext object in the stack. /// public GraphicsContext Previous { get { return this.prevContext; } set { this.prevContext = value; } } ////// Determines whether this context is cumulative or not. See filed for more info. /// public bool IsCumulative { get { return this.isCumulative; } set { this.isCumulative = value; } } } } // 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
- ToolStripLabel.cs
- DataServiceContext.cs
- ConfigurationManager.cs
- ListBox.cs
- FunctionCommandText.cs
- TextRangeEditTables.cs
- Expression.cs
- EFDataModelProvider.cs
- DescriptionAttribute.cs
- GatewayDefinition.cs
- DetailsViewRow.cs
- AssemblyCache.cs
- SynchronizationLockException.cs
- WebPartDisplayMode.cs
- DataGridView.cs
- LowerCaseStringConverter.cs
- AsmxEndpointPickerExtension.cs
- PingOptions.cs
- ArglessEventHandlerProxy.cs
- _ProxyChain.cs
- LockedActivityGlyph.cs
- WizardStepBase.cs
- OracleColumn.cs
- FontStretches.cs
- SQLByte.cs
- DecimalConstantAttribute.cs
- InputScope.cs
- XmlExtensionFunction.cs
- TemplateBindingExpressionConverter.cs
- BitmapFrame.cs
- unsafenativemethodsother.cs
- ExportOptions.cs
- DynamicResourceExtension.cs
- SchemaHelper.cs
- ConfigXmlWhitespace.cs
- ErrorEventArgs.cs
- JumpTask.cs
- SqlDeflator.cs
- PropertyValue.cs
- Constants.cs
- StringStorage.cs
- RepeaterItemCollection.cs
- ConfigurationElementCollection.cs
- Comparer.cs
- XmlSchemaSimpleTypeUnion.cs
- ConsumerConnectionPointCollection.cs
- TdsParserSessionPool.cs
- Int32AnimationUsingKeyFrames.cs
- OrthographicCamera.cs
- ProcessInfo.cs
- OverrideMode.cs
- DeploymentSection.cs
- MouseEventArgs.cs
- MobileControlsSectionHandler.cs
- XPathScanner.cs
- TextAdaptor.cs
- KeyValuePairs.cs
- PathSegmentCollection.cs
- EdmToObjectNamespaceMap.cs
- TransactionBridgeSection.cs
- MenuItemStyleCollection.cs
- EnumConverter.cs
- EntityDataSourceView.cs
- _OSSOCK.cs
- PowerModeChangedEventArgs.cs
- ResourceProviderFactory.cs
- DependencyObjectProvider.cs
- JsonFormatMapping.cs
- SolidColorBrush.cs
- SamlConstants.cs
- Variant.cs
- ReadOnlyActivityGlyph.cs
- EmptyStringExpandableObjectConverter.cs
- XPathScanner.cs
- OracleConnectionString.cs
- DefaultTraceListener.cs
- EntityCommandDefinition.cs
- MultilineStringEditor.cs
- PriorityBinding.cs
- ReadOnlyDictionary.cs
- ZipIOCentralDirectoryFileHeader.cs
- DataGridViewColumnDividerDoubleClickEventArgs.cs
- CollectionCodeDomSerializer.cs
- AsymmetricKeyExchangeDeformatter.cs
- SqlDelegatedTransaction.cs
- CDSCollectionETWBCLProvider.cs
- VectorCollectionValueSerializer.cs
- HttpStreamMessage.cs
- PixelShader.cs
- COM2IManagedPerPropertyBrowsingHandler.cs
- Merger.cs
- OutgoingWebResponseContext.cs
- SamlNameIdentifierClaimResource.cs
- BamlTreeNode.cs
- XPathNodePointer.cs
- GetCardDetailsRequest.cs
- PeerContact.cs
- RuleInfoComparer.cs
- MULTI_QI.cs
- DateTimeAutomationPeer.cs