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
- IntranetCredentialPolicy.cs
- Substitution.cs
- NegotiateStream.cs
- EnumerableRowCollection.cs
- RegionInfo.cs
- SqlDataSourceCache.cs
- Barrier.cs
- MetafileHeaderWmf.cs
- AbstractExpressions.cs
- Pens.cs
- StateBag.cs
- ListContractAdapter.cs
- ItemDragEvent.cs
- DrawingGroup.cs
- SpecialNameAttribute.cs
- ResourcesChangeInfo.cs
- propertyentry.cs
- DbParameterHelper.cs
- StrokeRenderer.cs
- ClientBuildManager.cs
- ArrangedElementCollection.cs
- AspNetPartialTrustHelpers.cs
- FixedFlowMap.cs
- DataGridViewAccessibleObject.cs
- BatchServiceHost.cs
- QilParameter.cs
- ShaderEffect.cs
- FileReservationCollection.cs
- ParameterModifier.cs
- WorkflowViewElement.cs
- ColumnMapProcessor.cs
- SpellerInterop.cs
- FontNamesConverter.cs
- CodeSnippetExpression.cs
- GestureRecognizer.cs
- CollectionChangeEventArgs.cs
- DataFormats.cs
- ParameterToken.cs
- WebBrowser.cs
- RegistryDataKey.cs
- IRCollection.cs
- TitleStyle.cs
- TraceLevelStore.cs
- PersonalizableTypeEntry.cs
- CodeGeneratorOptions.cs
- RightsManagementPermission.cs
- MimeReturn.cs
- FormViewDeleteEventArgs.cs
- XamlDesignerSerializationManager.cs
- XmlValidatingReaderImpl.cs
- DataGridViewTopLeftHeaderCell.cs
- DatatypeImplementation.cs
- EncoderReplacementFallback.cs
- ToolTipAutomationPeer.cs
- SplitContainer.cs
- EntityClassGenerator.cs
- UInt64Converter.cs
- WebPartDisplayModeCancelEventArgs.cs
- WebPartEditorOkVerb.cs
- ProtectedConfigurationSection.cs
- ThrowHelper.cs
- MemberListBinding.cs
- PlainXmlSerializer.cs
- ValidationHelpers.cs
- ListViewItem.cs
- DataGridViewRowCollection.cs
- MarkedHighlightComponent.cs
- UnsafeNativeMethods.cs
- EntitySet.cs
- StringStorage.cs
- SqlDependencyListener.cs
- AnimationClockResource.cs
- AlgoModule.cs
- CheckBoxRenderer.cs
- SendOperation.cs
- CategoryGridEntry.cs
- BoundPropertyEntry.cs
- ServiceDescriptionReflector.cs
- DataGridParentRows.cs
- DynamicPhysicalDiscoSearcher.cs
- SessionStateContainer.cs
- FilterException.cs
- DynamicPropertyReader.cs
- CodeThrowExceptionStatement.cs
- SoapReflectionImporter.cs
- BevelBitmapEffect.cs
- CodeSnippetExpression.cs
- DSACryptoServiceProvider.cs
- SchemaManager.cs
- SessionConnectionReader.cs
- PersonalizationStateInfoCollection.cs
- ToolStripGrip.cs
- SuppressMergeCheckAttribute.cs
- ExceptionUtil.cs
- CellCreator.cs
- QilTypeChecker.cs
- WorkflowMarkupSerializerMapping.cs
- ArgumentException.cs
- TextBox.cs
- ByteStack.cs