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 / GeometryDrawing.cs / 1 / GeometryDrawing.cs
//---------------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // Description: GeometryDrawing represents a drawing operation that combines // a geometry with and brush and/or pen to produce rendered // content. // // History: // // 2004/11/17 : timothyc - Created it. // //--------------------------------------------------------------------------- using System.Diagnostics; namespace System.Windows.Media { ////// GeometryDrawing represents a drawing operation that combines /// a geometry with and brush and/or pen to produce rendered /// content. /// public sealed partial class GeometryDrawing : Drawing { #region Constructors ////// Default GeometryDrawing constructor. /// Constructs an object with all properties set to their default values /// public GeometryDrawing() { } ////// Three-argument GeometryDrawing constructor. /// Constructs an object with the Brush, Pen, and Geometry properties /// set to the value of their respective arguments. /// public GeometryDrawing(Brush brush, Pen pen, Geometry geometry) { Brush = brush; Pen = pen; Geometry = geometry; } #endregion #region Internal methods ////// Calls methods on the DrawingContext that are equivalent to the /// Drawing with the Drawing's current value. /// internal override void WalkCurrentValue(DrawingContextWalker ctx) { // We avoid unneccessary ShouldStopWalking checks based on assumptions // about when ShouldStopWalking is set. Guard that assumption with an // assertion. See DrawingGroup.WalkCurrentValue comment for more details. Debug.Assert(!ctx.ShouldStopWalking); ctx.DrawGeometry( Brush, Pen, Geometry ); } ////// PrecomputeCore /// /// Currently this method checks if the geometry drawing requires realization updates. /// Realization updates are needed if the fill/stroke brush contain drawings or if the /// fill/stroke brush are VisualBrushes. /// internal override void PrecomputeCore() { RequiresRealizationUpdates = false; if (Geometry != null) { Brush fillBrush = Brush; Pen pen = Pen; Brush strokeBrush = (pen != null) ? pen.Brush : null; if (fillBrush != null) { fillBrush.Precompute(); RequiresRealizationUpdates |= fillBrush.RequiresRealizationUpdates; } if (strokeBrush != null) { strokeBrush.Precompute(); RequiresRealizationUpdates |= strokeBrush.RequiresRealizationUpdates; } } } ////// Pushes updates into the geometries fill brush or stroke brush if necessary. /// internal override void UpdateRealizations(RealizationContext realizationContext) { Debug.Assert(realizationContext != null); if (RequiresRealizationUpdates) { Debug.Assert(Geometry != null, "RequiresRealizationUpdates is true if Geometry != null."); Brush fillBrush = Brush; Pen pen = Pen; Brush strokeBrush = (pen != null) ? pen.Brush : null; // The bounding box of the geometry can affect at one scale resolutions have to be created. // (E.g. StretchMode.Fill). Rect bounds = Geometry.GetBoundsInternal(null, Matrix.Identity); if (fillBrush != null) { fillBrush.UpdateRealizations(bounds, realizationContext); } if (strokeBrush != null) { strokeBrush.UpdateRealizations(bounds, realizationContext); } } } #endregion Internal methods } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // Description: GeometryDrawing represents a drawing operation that combines // a geometry with and brush and/or pen to produce rendered // content. // // History: // // 2004/11/17 : timothyc - Created it. // //--------------------------------------------------------------------------- using System.Diagnostics; namespace System.Windows.Media { ////// GeometryDrawing represents a drawing operation that combines /// a geometry with and brush and/or pen to produce rendered /// content. /// public sealed partial class GeometryDrawing : Drawing { #region Constructors ////// Default GeometryDrawing constructor. /// Constructs an object with all properties set to their default values /// public GeometryDrawing() { } ////// Three-argument GeometryDrawing constructor. /// Constructs an object with the Brush, Pen, and Geometry properties /// set to the value of their respective arguments. /// public GeometryDrawing(Brush brush, Pen pen, Geometry geometry) { Brush = brush; Pen = pen; Geometry = geometry; } #endregion #region Internal methods ////// Calls methods on the DrawingContext that are equivalent to the /// Drawing with the Drawing's current value. /// internal override void WalkCurrentValue(DrawingContextWalker ctx) { // We avoid unneccessary ShouldStopWalking checks based on assumptions // about when ShouldStopWalking is set. Guard that assumption with an // assertion. See DrawingGroup.WalkCurrentValue comment for more details. Debug.Assert(!ctx.ShouldStopWalking); ctx.DrawGeometry( Brush, Pen, Geometry ); } ////// PrecomputeCore /// /// Currently this method checks if the geometry drawing requires realization updates. /// Realization updates are needed if the fill/stroke brush contain drawings or if the /// fill/stroke brush are VisualBrushes. /// internal override void PrecomputeCore() { RequiresRealizationUpdates = false; if (Geometry != null) { Brush fillBrush = Brush; Pen pen = Pen; Brush strokeBrush = (pen != null) ? pen.Brush : null; if (fillBrush != null) { fillBrush.Precompute(); RequiresRealizationUpdates |= fillBrush.RequiresRealizationUpdates; } if (strokeBrush != null) { strokeBrush.Precompute(); RequiresRealizationUpdates |= strokeBrush.RequiresRealizationUpdates; } } } ////// Pushes updates into the geometries fill brush or stroke brush if necessary. /// internal override void UpdateRealizations(RealizationContext realizationContext) { Debug.Assert(realizationContext != null); if (RequiresRealizationUpdates) { Debug.Assert(Geometry != null, "RequiresRealizationUpdates is true if Geometry != null."); Brush fillBrush = Brush; Pen pen = Pen; Brush strokeBrush = (pen != null) ? pen.Brush : null; // The bounding box of the geometry can affect at one scale resolutions have to be created. // (E.g. StretchMode.Fill). Rect bounds = Geometry.GetBoundsInternal(null, Matrix.Identity); if (fillBrush != null) { fillBrush.UpdateRealizations(bounds, realizationContext); } if (strokeBrush != null) { strokeBrush.UpdateRealizations(bounds, realizationContext); } } } #endregion Internal methods } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SafeFileMappingHandle.cs
- ResXResourceWriter.cs
- LinqDataSourceContextEventArgs.cs
- FixedSOMPageElement.cs
- ToolStripMenuItem.cs
- SchemaInfo.cs
- Triplet.cs
- messageonlyhwndwrapper.cs
- TriggerCollection.cs
- BadImageFormatException.cs
- Ipv6Element.cs
- ServiceDescription.cs
- KeyGesture.cs
- PermissionAttributes.cs
- LinqDataSourceEditData.cs
- StringBlob.cs
- ListItem.cs
- URLString.cs
- OdbcConnectionFactory.cs
- ErrorWebPart.cs
- DescriptionAttribute.cs
- IDReferencePropertyAttribute.cs
- BaseProcessor.cs
- DoubleCollection.cs
- BinaryObjectInfo.cs
- CodeMemberProperty.cs
- ContractAdapter.cs
- ThemeDirectoryCompiler.cs
- RequestCacheEntry.cs
- FastEncoderStatics.cs
- GestureRecognizer.cs
- ValidationService.cs
- GeneralTransform2DTo3DTo2D.cs
- AuditLevel.cs
- DataServiceContext.cs
- PreviewPrintController.cs
- AddIn.cs
- FormsAuthenticationUser.cs
- RelationshipEndCollection.cs
- PrivilegedConfigurationManager.cs
- RenderingBiasValidation.cs
- KeyValueInternalCollection.cs
- WorkflowOperationFault.cs
- ClientBuildManagerCallback.cs
- Switch.cs
- XmlAtomicValue.cs
- ResourceReferenceExpressionConverter.cs
- ThicknessAnimationUsingKeyFrames.cs
- BaseProcessor.cs
- WebServiceReceive.cs
- SoapParser.cs
- AdapterDictionary.cs
- TextElementEnumerator.cs
- WebPartDisplayMode.cs
- DataAdapter.cs
- DataGridLength.cs
- WeakEventTable.cs
- Utility.cs
- CompoundFileStorageReference.cs
- BamlTreeUpdater.cs
- BuildProviderUtils.cs
- AnyAllSearchOperator.cs
- ListViewTableRow.cs
- SemanticTag.cs
- GridViewCommandEventArgs.cs
- RecognizedPhrase.cs
- CodeGeneratorOptions.cs
- SqlHelper.cs
- PlanCompilerUtil.cs
- IndexedString.cs
- FusionWrap.cs
- SHA256.cs
- ConfigurationElementProperty.cs
- Evidence.cs
- InvalidPrinterException.cs
- CatalogPart.cs
- FixedPageProcessor.cs
- RuntimeConfig.cs
- XmlnsDefinitionAttribute.cs
- ListenerConnectionModeReader.cs
- Matrix.cs
- TemplatedWizardStep.cs
- XmlSerializationGeneratedCode.cs
- RequestQueue.cs
- GlyphRunDrawing.cs
- CheckPair.cs
- BitmapMetadataBlob.cs
- DrawItemEvent.cs
- DataGridColumnCollection.cs
- Monitor.cs
- XPathItem.cs
- ImmutableClientRuntime.cs
- CodeAttachEventStatement.cs
- AliasedExpr.cs
- InfoCardRSACryptoProvider.cs
- IndexerNameAttribute.cs
- DirectoryObjectSecurity.cs
- MaskedTextProvider.cs
- Size.cs
- MultiDataTrigger.cs