Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Core / CSharp / System / Windows / Media / ArcSegment.cs / 1 / 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
- ComponentDispatcher.cs
- ObjectQueryState.cs
- Knowncolors.cs
- JsonByteArrayDataContract.cs
- ClientBuildManager.cs
- EntityStoreSchemaFilterEntry.cs
- ClassDataContract.cs
- WorkflowRuntimeServicesBehavior.cs
- PackWebResponse.cs
- MoveSizeWinEventHandler.cs
- HttpApplicationFactory.cs
- CompoundFileStorageReference.cs
- UrlParameterWriter.cs
- XPathSelfQuery.cs
- Int64KeyFrameCollection.cs
- VisualTreeUtils.cs
- CharUnicodeInfo.cs
- DefaultValidator.cs
- QilList.cs
- UriScheme.cs
- WebPartCancelEventArgs.cs
- RequestCacheManager.cs
- ActivityContext.cs
- SaveWorkflowCommand.cs
- AnnotationMap.cs
- GeometryCombineModeValidation.cs
- LoopExpression.cs
- CommentAction.cs
- TargetPerspective.cs
- CheckableControlBaseAdapter.cs
- BamlReader.cs
- IntranetCredentialPolicy.cs
- UmAlQuraCalendar.cs
- DataSourceExpression.cs
- DependencyProperty.cs
- SamlAuthenticationStatement.cs
- DrawingAttributesDefaultValueFactory.cs
- TimeStampChecker.cs
- ECDsaCng.cs
- HwndHostAutomationPeer.cs
- PagesChangedEventArgs.cs
- DataGridViewSortCompareEventArgs.cs
- AuthenticatedStream.cs
- AutomationFocusChangedEventArgs.cs
- ArrayWithOffset.cs
- ListItemParagraph.cs
- ContractMapping.cs
- MetadataPropertyAttribute.cs
- GcSettings.cs
- DelegateSerializationHolder.cs
- TextServicesCompartmentEventSink.cs
- FileUpload.cs
- SettingsContext.cs
- CallContext.cs
- TaskFormBase.cs
- IProducerConsumerCollection.cs
- DataGridCell.cs
- DataRecordInfo.cs
- StringInfo.cs
- ImageInfo.cs
- ProxyWebPartConnectionCollection.cs
- KeyTime.cs
- DeviceSpecificDesigner.cs
- TextTreeDeleteContentUndoUnit.cs
- DataSourceControlBuilder.cs
- Propagator.ExtentPlaceholderCreator.cs
- SqlBulkCopyColumnMapping.cs
- XmlHierarchicalEnumerable.cs
- EncryptedPackageFilter.cs
- XmlEntityReference.cs
- BuilderInfo.cs
- DynamicValidatorEventArgs.cs
- MarshalByRefObject.cs
- Label.cs
- OdbcCommandBuilder.cs
- TextServicesCompartmentEventSink.cs
- XmlHierarchyData.cs
- BeginGetFileNameFromUserRequest.cs
- HostingEnvironmentException.cs
- TableSectionStyle.cs
- TargetInvocationException.cs
- WebPartManagerInternals.cs
- RangeValidator.cs
- PriorityQueue.cs
- Rect.cs
- DirectoryNotFoundException.cs
- BuildManager.cs
- StreamHelper.cs
- ReferenceConverter.cs
- WebZone.cs
- BaseCodeDomTreeGenerator.cs
- ConversionContext.cs
- SecurityContext.cs
- XmlCollation.cs
- CollectionContainer.cs
- Wizard.cs
- ApplicationInfo.cs
- FlagsAttribute.cs
- FactoryGenerator.cs
- NominalTypeEliminator.cs