Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / Media / ArcSegment.cs / 1305600 / ArcSegment.cs
//-------------------------------------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // Description: Impelementation of ArcSegment // // History: // //------------------------------------------------------------------------------------------------- using MS.Internal; using MS.Internal.PresentationCore; using System; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Diagnostics; using System.Globalization; using System.Reflection; using System.Text; using System.Security; using System.Security.Permissions; using System.Text.RegularExpressions; using System.Windows.Media; using System.Windows; using System.Windows.Media.Composition; using System.Windows.Media.Animation; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows.Media { ////// ArcSegment /// public sealed partial class ArcSegment : PathSegment { #region Constructors ////// /// public ArcSegment() { } ////// /// public ArcSegment( Point point, Size size, double rotationAngle, bool isLargeArc, SweepDirection sweepDirection, bool isStroked) { Size = size; RotationAngle = rotationAngle; IsLargeArc = isLargeArc; SweepDirection = sweepDirection; Point = point; IsStroked = isStroked; } #endregion #region AddToFigure ////// Critical: This code calls into MilUtility_ArcToBezier which has an unmanaged code elevation /// TreatAsSafe: Adding a figure is considered safe in partial trust. /// [SecurityCritical,SecurityTreatAsSafe] internal override void AddToFigure( Matrix matrix, // The transformation matrid PathFigure figure, // The figure to add to ref Point current) // In: Segment start point, Out: Segment endpoint, neither transformed { Point endPoint = Point; if (matrix.IsIdentity) { figure.Segments.Add(this); } else { // The arc segment is approximated by up to 4 Bezier segments unsafe { int count; Point* points = stackalloc Point[12]; Size size = Size; Double rotation = RotationAngle; MilMatrix3x2D mat3X2 = CompositionResourceManager.MatrixToMilMatrix3x2D(ref matrix); Composition.MilCoreApi.MilUtility_ArcToBezier( current, // =start point size, rotation, IsLargeArc, SweepDirection, endPoint, &mat3X2, points, out count); // = number of Bezier segments Invariant.Assert(count <= 4); // To ensure no buffer overflows count = Math.Min(count, 4); bool isStroked = IsStroked; bool isSmoothJoin = IsSmoothJoin; // Add the segments if (count > 0) { for (int i = 0; i < count; i++) { figure.Segments.Add(new BezierSegment( points[3*i], points[3*i + 1], points[3*i + 2], isStroked, (i < count - 1) || isSmoothJoin)); // Smooth join between arc pieces } } else if (count == 0) { figure.Segments.Add(new LineSegment(points[0], isStroked, isSmoothJoin)); } } // Update the last point current = endPoint; } } #endregion ////// SerializeData - Serialize the contents of this Segment to the provided context. /// internal override void SerializeData(StreamGeometryContext ctx) { ctx.ArcTo(Point, Size, RotationAngle, IsLargeArc, SweepDirection, IsStroked, IsSmoothJoin); } internal override bool IsCurved() { return true; } ////// Creates a string representation of this object based on the format string /// and IFormatProvider passed in. /// If the provider is null, the CurrentCulture is used. /// See the documentation for IFormattable for more information. /// ////// A string representation of this object. /// internal override string ConvertToString(string format, IFormatProvider provider) { // Helper to get the numeric list separator for a given culture. char separator = MS.Internal.TokenizerHelper.GetNumericListSeparator(provider); return String.Format(provider, "A{1:" + format + "}{0}{2:" + format + "}{0}{3}{0}{4}{0}{5:" + format + "}", separator, Size, RotationAngle, IsLargeArc ? "1" : "0", SweepDirection == SweepDirection.Clockwise ? "1" : "0", Point); } // // This property // 1. Finds the correct initial size for the _effectiveValues store on the current DependencyObject // 2. This is a performance optimization // internal override int EffectiveValuesInitialSize { get { return 6; } } ////// For the purposes of this class, Size.Empty should be treated as if it were Size(0,0). /// private static object CoerceSize(DependencyObject d, object value) { if (((Size)value).IsEmpty) { return new Size(0,0); } else { return value; } } } } // 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
- ForceCopyBuildProvider.cs
- WebBrowserProgressChangedEventHandler.cs
- XamlTypeMapper.cs
- ReachPageContentCollectionSerializerAsync.cs
- WebPartAuthorizationEventArgs.cs
- FlowSwitchDesigner.xaml.cs
- FixedSOMTable.cs
- HttpPostClientProtocol.cs
- Pair.cs
- ObjectDataSourceMethodEditor.cs
- TextElementCollectionHelper.cs
- MultiSelector.cs
- ByteAnimationBase.cs
- VarInfo.cs
- AutomationPattern.cs
- TextElementAutomationPeer.cs
- ControlEvent.cs
- Nullable.cs
- HashAlgorithm.cs
- TextRunCacheImp.cs
- DataServiceHost.cs
- Variant.cs
- NullableIntMinMaxAggregationOperator.cs
- DynamicValidatorEventArgs.cs
- DefaultPrintController.cs
- DynamicPropertyHolder.cs
- ChtmlPageAdapter.cs
- DataGridPreparingCellForEditEventArgs.cs
- TemporaryBitmapFile.cs
- Effect.cs
- ZipIOExtraField.cs
- DesignTimeData.cs
- Overlapped.cs
- ToolStripProfessionalLowResolutionRenderer.cs
- WindowsBrush.cs
- SamlAssertionKeyIdentifierClause.cs
- fixedPageContentExtractor.cs
- StartUpEventArgs.cs
- CommandID.cs
- MenuEventArgs.cs
- CodeStatement.cs
- SiblingIterators.cs
- BaseCollection.cs
- MetadataItemEmitter.cs
- MetadataWorkspace.cs
- XmlSchemaSimpleContent.cs
- TreeNode.cs
- XmlQuerySequence.cs
- FilteredSchemaElementLookUpTable.cs
- Attachment.cs
- MouseButtonEventArgs.cs
- TextOnlyOutput.cs
- PlanCompiler.cs
- DynamicUpdateCommand.cs
- Polygon.cs
- ColorInterpolationModeValidation.cs
- UrlPropertyAttribute.cs
- HtmlElementEventArgs.cs
- DefaultParameterValueAttribute.cs
- XmlSchemaExporter.cs
- ObjectListItemCollection.cs
- Vector3DCollectionConverter.cs
- HealthMonitoringSection.cs
- GuidelineCollection.cs
- XmlnsDefinitionAttribute.cs
- DesignerActionVerbList.cs
- TypedRowGenerator.cs
- DataBindEngine.cs
- RightsManagementEncryptedStream.cs
- Int64.cs
- SamlSecurityTokenAuthenticator.cs
- UidManager.cs
- QueryCacheManager.cs
- MenuCommandsChangedEventArgs.cs
- XmlDigitalSignatureProcessor.cs
- StringResourceManager.cs
- BuildProvider.cs
- XmlCharType.cs
- EnumDataContract.cs
- ModifiableIteratorCollection.cs
- DBCSCodePageEncoding.cs
- ReachBasicContext.cs
- objectquery_tresulttype.cs
- PartialCachingControl.cs
- PrimitiveSchema.cs
- ServerValidateEventArgs.cs
- EventRouteFactory.cs
- TextSchema.cs
- GraphicsContainer.cs
- OptimizedTemplateContentHelper.cs
- RepeatBehavior.cs
- FrameworkEventSource.cs
- CodeThrowExceptionStatement.cs
- KeyConverter.cs
- StateDesigner.CommentLayoutGlyph.cs
- RSAPKCS1KeyExchangeDeformatter.cs
- Brush.cs
- ServiceDesigner.cs
- SymbolType.cs
- InputProcessorProfilesLoader.cs