Code:
/ 4.0 / 4.0 / 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. //-------------------------------------------------------------------------------------------------- // // 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
- Transactions.cs
- ListSourceHelper.cs
- EmptyControlCollection.cs
- AuthenticatingEventArgs.cs
- XslTransform.cs
- SplashScreenNativeMethods.cs
- ComponentConverter.cs
- WinEventTracker.cs
- DirectoryNotFoundException.cs
- JsonXmlDataContract.cs
- OrderByBuilder.cs
- TimeSpan.cs
- QueryStoreStatusRequest.cs
- WebPartCatalogAddVerb.cs
- HashRepartitionEnumerator.cs
- WeakReferenceList.cs
- InputLanguageCollection.cs
- ResumeStoryboard.cs
- KoreanLunisolarCalendar.cs
- EncodingDataItem.cs
- TextTreeObjectNode.cs
- OleDbDataAdapter.cs
- OutKeywords.cs
- ResourceManagerWrapper.cs
- TracingConnectionInitiator.cs
- OleDbException.cs
- SharedConnectionInfo.cs
- ClientRuntimeConfig.cs
- XmlException.cs
- BuildProviderCollection.cs
- SkipStoryboardToFill.cs
- Polygon.cs
- BookmarkScope.cs
- XmlSchemaSimpleContentRestriction.cs
- BitmapEffect.cs
- WebPartPersonalization.cs
- TemplateKeyConverter.cs
- PrinterUnitConvert.cs
- SchemaInfo.cs
- OptionUsage.cs
- CellRelation.cs
- ExpanderAutomationPeer.cs
- SqlNodeTypeOperators.cs
- odbcmetadatafactory.cs
- PathData.cs
- ConsumerConnectionPointCollection.cs
- DesignObjectWrapper.cs
- WorkItem.cs
- FamilyCollection.cs
- HandleRef.cs
- BaseDataListComponentEditor.cs
- ReferencedCollectionType.cs
- CapacityStreamGeometryContext.cs
- ComponentDispatcherThread.cs
- InvokeFunc.cs
- AsymmetricKeyExchangeFormatter.cs
- MtomMessageEncodingBindingElement.cs
- TemplateBuilder.cs
- DataGridViewRowsAddedEventArgs.cs
- FlowLayout.cs
- ItemMap.cs
- SurrogateSelector.cs
- NopReturnReader.cs
- TitleStyle.cs
- GridSplitterAutomationPeer.cs
- AdornerLayer.cs
- FixedTextPointer.cs
- ReaderWriterLockWrapper.cs
- SqlClientFactory.cs
- CultureTable.cs
- RectangleConverter.cs
- StateDesigner.CommentLayoutGlyph.cs
- InternalBufferOverflowException.cs
- ContractMapping.cs
- HttpListenerPrefixCollection.cs
- DrawTreeNodeEventArgs.cs
- DockPanel.cs
- TrackingLocationCollection.cs
- BindingManagerDataErrorEventArgs.cs
- FixedPageStructure.cs
- DictionarySurrogate.cs
- AttachedAnnotationChangedEventArgs.cs
- SHA384Managed.cs
- input.cs
- CompositeScriptReferenceEventArgs.cs
- WeakReadOnlyCollection.cs
- QueryOperator.cs
- LogWriteRestartAreaState.cs
- ToolStripOverflow.cs
- RewritingPass.cs
- IResourceProvider.cs
- PolyQuadraticBezierSegment.cs
- DataBoundLiteralControl.cs
- IdnElement.cs
- ProcessThread.cs
- CodeDelegateInvokeExpression.cs
- ColorMatrix.cs
- EntityViewGenerationConstants.cs
- ResourcePart.cs
- MessageFilter.cs