Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / 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.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- unsafeIndexingFilterStream.cs
- GridViewColumnCollectionChangedEventArgs.cs
- CultureMapper.cs
- BindUriHelper.cs
- InternalDispatchObject.cs
- WebBrowserEvent.cs
- TextServicesManager.cs
- EntityClientCacheEntry.cs
- NativeRightsManagementAPIsStructures.cs
- Script.cs
- SafeHandle.cs
- DeploymentExceptionMapper.cs
- CoTaskMemSafeHandle.cs
- SoapInteropTypes.cs
- FlowDocumentScrollViewerAutomationPeer.cs
- Brush.cs
- Root.cs
- CodeObjectCreateExpression.cs
- CompositeControl.cs
- GetLedgerRequest.cs
- ReflectionTypeLoadException.cs
- ExpressionBindings.cs
- GlyphCache.cs
- EmptyEnumerator.cs
- CollectionsUtil.cs
- DescendantBaseQuery.cs
- StaticFileHandler.cs
- Funcletizer.cs
- WorkflowOperationContext.cs
- ProjectionPruner.cs
- MenuItemStyleCollection.cs
- PropertyStore.cs
- DataGridTextBox.cs
- MetaType.cs
- ResourceProperty.cs
- SQLStringStorage.cs
- AutoGeneratedFieldProperties.cs
- ISO2022Encoding.cs
- ReflectEventDescriptor.cs
- MarshalDirectiveException.cs
- Crypto.cs
- DataGridViewButtonColumn.cs
- NativeMethods.cs
- HMACSHA1.cs
- LockRecursionException.cs
- DataDocumentXPathNavigator.cs
- UserMapPath.cs
- Parser.cs
- StrongNameMembershipCondition.cs
- BreadCrumbTextConverter.cs
- ConfigurationSectionHelper.cs
- EmptyCollection.cs
- ControlAdapter.cs
- BoolExpr.cs
- Accessible.cs
- RefType.cs
- Button.cs
- DataGridCommandEventArgs.cs
- TypeToTreeConverter.cs
- Internal.cs
- Triplet.cs
- Int32CAMarshaler.cs
- DeclarativeCatalogPartDesigner.cs
- Bold.cs
- BrushMappingModeValidation.cs
- ConstraintStruct.cs
- externdll.cs
- TreeView.cs
- RadialGradientBrush.cs
- TypeCodeDomSerializer.cs
- ConfigurationManagerInternal.cs
- TemplateParser.cs
- BufferModesCollection.cs
- ObjectQuery.cs
- CapabilitiesSection.cs
- IndexOutOfRangeException.cs
- CodeDomExtensionMethods.cs
- BindingMemberInfo.cs
- EncryptedKey.cs
- WebEventCodes.cs
- VisualTreeUtils.cs
- TreeNodeClickEventArgs.cs
- NameValueCollection.cs
- PolyLineSegment.cs
- PropertyConverter.cs
- SystemUnicastIPAddressInformation.cs
- RuntimeEnvironment.cs
- NetworkStream.cs
- SecurityTokenProviderContainer.cs
- SerializationIncompleteException.cs
- SignedXml.cs
- TdsParserSafeHandles.cs
- ToolStripDropDownItem.cs
- FieldTemplateFactory.cs
- EntityConnectionStringBuilderItem.cs
- DataGridViewColumnEventArgs.cs
- InternalConfigEventArgs.cs
- RMEnrollmentPage1.cs
- AccessText.cs
- AppDomainGrammarProxy.cs