Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / Media / LineGeometry.cs / 1305600 / LineGeometry.cs
//------------------------------------------------------------------------------ // Microsoft Avalon // Copyright (c) Microsoft Corporation, 2001 // // File: LineGeometry.cs //----------------------------------------------------------------------------- using System; using MS.Internal; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Reflection; using System.Collections; using System.Text; using System.Globalization; using System.Windows.Media; using System.Windows; using System.Text.RegularExpressions; using System.Windows.Media.Animation; using System.Windows.Media.Composition; using System.Diagnostics; using System.Runtime.InteropServices; using System.Security; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows.Media { ////// This is the Geometry class for Lines. /// public sealed partial class LineGeometry : Geometry { #region Constructors ////// /// public LineGeometry() { } ////// /// public LineGeometry(Point startPoint, Point endPoint) { StartPoint = startPoint; EndPoint = endPoint; } ////// /// public LineGeometry( Point startPoint, Point endPoint, Transform transform) : this(startPoint, endPoint) { Transform = transform; } #endregion ////// Gets the bounds of this Geometry as an axis-aligned bounding box /// public override Rect Bounds { get { ReadPreamble(); Rect rect = new Rect(StartPoint, EndPoint); Transform transform = Transform; if (transform != null && !transform.IsIdentity) { transform.TransformRect(ref rect); } return rect; } } ////// Returns the axis-aligned bounding rectangle when stroked with a pen, after applying /// the supplied transform (if non-null). /// internal override Rect GetBoundsInternal(Pen pen, Matrix worldMatrix, double tolerance, ToleranceType type) { Matrix geometryMatrix; Transform.GetTransformValue(Transform, out geometryMatrix); return LineGeometry.GetBoundsHelper( pen, worldMatrix, StartPoint, EndPoint, geometryMatrix, tolerance, type); } ////// Critical - it calls a critical method, Geometry.GetBoundsHelper and has an unsafe block /// TreatAsSafe - returning a LineGeometry's bounds is considered safe /// [SecurityCritical, SecurityTreatAsSafe] internal static Rect GetBoundsHelper(Pen pen, Matrix worldMatrix, Point pt1, Point pt2, Matrix geometryMatrix, double tolerance, ToleranceType type) { Debug.Assert(worldMatrix != null); Debug.Assert(geometryMatrix != null); if (pen == null && worldMatrix.IsIdentity && geometryMatrix.IsIdentity) { return new Rect(pt1, pt2); } else { unsafe { Point* pPoints = stackalloc Point[2]; pPoints[0] = pt1; pPoints[1] = pt2; fixed (byte *pTypes = LineGeometry.s_lineTypes) { return Geometry.GetBoundsHelper( pen, &worldMatrix, pPoints, pTypes, c_pointCount, c_segmentCount, &geometryMatrix, tolerance, type, false); // skip hollows - meaningless here, this is never a hollow } } } } ////// Critical - contains unsafe block and calls critical method Geometry.ContainsInternal. /// TreatAsSafe - as this doesn't expose anything sensitive. /// [SecurityCritical, SecurityTreatAsSafe] internal override bool ContainsInternal(Pen pen, Point hitPoint, double tolerance, ToleranceType type) { unsafe { Point *pPoints = stackalloc Point[2]; pPoints[0] = StartPoint; pPoints[1] = EndPoint; fixed (byte* pTypes = GetTypeList()) { return ContainsInternal( pen, hitPoint, tolerance, type, pPoints, GetPointCount(), pTypes, GetSegmentCount()); } } } ////// Returns true if this geometry is empty /// public override bool IsEmpty() { return false; } ////// Returns true if this geometry may have curved segments /// public override bool MayHaveCurves() { return false; } ////// Gets the area of this geometry /// /// The computational error tolerance /// The way the error tolerance will be interpreted - relative or absolute public override double GetArea(double tolerance, ToleranceType type) { return 0.0; } private byte[] GetTypeList() { return s_lineTypes; } private static byte[] s_lineTypes = new byte[] { (byte)MILCoreSegFlags.SegTypeLine }; private uint GetPointCount() { return c_pointCount; } private uint GetSegmentCount() { return c_segmentCount; } ////// GetAsPathGeometry - return a PathGeometry version of this Geometry /// internal override PathGeometry GetAsPathGeometry() { PathStreamGeometryContext ctx = new PathStreamGeometryContext(FillRule.EvenOdd, Transform); PathGeometry.ParsePathGeometryData(GetPathGeometryData(), ctx); return ctx.GetPathGeometry(); } internal override PathFigureCollection GetTransformedFigureCollection(Transform transform) { // This is lossy for consistency with other GetPathFigureCollection() implementations // however this limitation doesn't otherwise need to exist for LineGeometry. Point startPoint = StartPoint; Point endPoint = EndPoint; // Apply internal transform Transform internalTransform = Transform; if (internalTransform != null && !internalTransform.IsIdentity) { Matrix matrix = internalTransform.Value; startPoint *= matrix; endPoint *= matrix; } // Apply external transform if (transform != null && !transform.IsIdentity) { Matrix matrix = transform.Value; startPoint *= matrix; endPoint *= matrix; } PathFigureCollection collection = new PathFigureCollection(); collection.Add( new PathFigure( startPoint, new PathSegment[]{new LineSegment(endPoint, true)}, false // ==> not closed ) ); return collection; } ////// GetPathGeometryData - returns a byte[] which contains this Geometry represented /// as a path geometry's serialized format. /// internal override PathGeometryData GetPathGeometryData() { if (IsObviouslyEmpty()) { return Geometry.GetEmptyPathGeometryData(); } PathGeometryData data = new PathGeometryData(); data.FillRule = FillRule.EvenOdd; data.Matrix = CompositionResourceManager.TransformToMilMatrix3x2D(Transform); ByteStreamGeometryContext ctx = new ByteStreamGeometryContext(); ctx.BeginFigure(StartPoint, true /* is filled */, false /* is closed */); ctx.LineTo(EndPoint, true /* is stroked */, false /* is smooth join */); ctx.Close(); data.SerializedData = ctx.GetData(); return data; } #region Static Data private const UInt32 c_segmentCount = 1; private const UInt32 c_pointCount = 2; #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //------------------------------------------------------------------------------ // Microsoft Avalon // Copyright (c) Microsoft Corporation, 2001 // // File: LineGeometry.cs //----------------------------------------------------------------------------- using System; using MS.Internal; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Reflection; using System.Collections; using System.Text; using System.Globalization; using System.Windows.Media; using System.Windows; using System.Text.RegularExpressions; using System.Windows.Media.Animation; using System.Windows.Media.Composition; using System.Diagnostics; using System.Runtime.InteropServices; using System.Security; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows.Media { ////// This is the Geometry class for Lines. /// public sealed partial class LineGeometry : Geometry { #region Constructors ////// /// public LineGeometry() { } ////// /// public LineGeometry(Point startPoint, Point endPoint) { StartPoint = startPoint; EndPoint = endPoint; } ////// /// public LineGeometry( Point startPoint, Point endPoint, Transform transform) : this(startPoint, endPoint) { Transform = transform; } #endregion ////// Gets the bounds of this Geometry as an axis-aligned bounding box /// public override Rect Bounds { get { ReadPreamble(); Rect rect = new Rect(StartPoint, EndPoint); Transform transform = Transform; if (transform != null && !transform.IsIdentity) { transform.TransformRect(ref rect); } return rect; } } ////// Returns the axis-aligned bounding rectangle when stroked with a pen, after applying /// the supplied transform (if non-null). /// internal override Rect GetBoundsInternal(Pen pen, Matrix worldMatrix, double tolerance, ToleranceType type) { Matrix geometryMatrix; Transform.GetTransformValue(Transform, out geometryMatrix); return LineGeometry.GetBoundsHelper( pen, worldMatrix, StartPoint, EndPoint, geometryMatrix, tolerance, type); } ////// Critical - it calls a critical method, Geometry.GetBoundsHelper and has an unsafe block /// TreatAsSafe - returning a LineGeometry's bounds is considered safe /// [SecurityCritical, SecurityTreatAsSafe] internal static Rect GetBoundsHelper(Pen pen, Matrix worldMatrix, Point pt1, Point pt2, Matrix geometryMatrix, double tolerance, ToleranceType type) { Debug.Assert(worldMatrix != null); Debug.Assert(geometryMatrix != null); if (pen == null && worldMatrix.IsIdentity && geometryMatrix.IsIdentity) { return new Rect(pt1, pt2); } else { unsafe { Point* pPoints = stackalloc Point[2]; pPoints[0] = pt1; pPoints[1] = pt2; fixed (byte *pTypes = LineGeometry.s_lineTypes) { return Geometry.GetBoundsHelper( pen, &worldMatrix, pPoints, pTypes, c_pointCount, c_segmentCount, &geometryMatrix, tolerance, type, false); // skip hollows - meaningless here, this is never a hollow } } } } ////// Critical - contains unsafe block and calls critical method Geometry.ContainsInternal. /// TreatAsSafe - as this doesn't expose anything sensitive. /// [SecurityCritical, SecurityTreatAsSafe] internal override bool ContainsInternal(Pen pen, Point hitPoint, double tolerance, ToleranceType type) { unsafe { Point *pPoints = stackalloc Point[2]; pPoints[0] = StartPoint; pPoints[1] = EndPoint; fixed (byte* pTypes = GetTypeList()) { return ContainsInternal( pen, hitPoint, tolerance, type, pPoints, GetPointCount(), pTypes, GetSegmentCount()); } } } ////// Returns true if this geometry is empty /// public override bool IsEmpty() { return false; } ////// Returns true if this geometry may have curved segments /// public override bool MayHaveCurves() { return false; } ////// Gets the area of this geometry /// /// The computational error tolerance /// The way the error tolerance will be interpreted - relative or absolute public override double GetArea(double tolerance, ToleranceType type) { return 0.0; } private byte[] GetTypeList() { return s_lineTypes; } private static byte[] s_lineTypes = new byte[] { (byte)MILCoreSegFlags.SegTypeLine }; private uint GetPointCount() { return c_pointCount; } private uint GetSegmentCount() { return c_segmentCount; } ////// GetAsPathGeometry - return a PathGeometry version of this Geometry /// internal override PathGeometry GetAsPathGeometry() { PathStreamGeometryContext ctx = new PathStreamGeometryContext(FillRule.EvenOdd, Transform); PathGeometry.ParsePathGeometryData(GetPathGeometryData(), ctx); return ctx.GetPathGeometry(); } internal override PathFigureCollection GetTransformedFigureCollection(Transform transform) { // This is lossy for consistency with other GetPathFigureCollection() implementations // however this limitation doesn't otherwise need to exist for LineGeometry. Point startPoint = StartPoint; Point endPoint = EndPoint; // Apply internal transform Transform internalTransform = Transform; if (internalTransform != null && !internalTransform.IsIdentity) { Matrix matrix = internalTransform.Value; startPoint *= matrix; endPoint *= matrix; } // Apply external transform if (transform != null && !transform.IsIdentity) { Matrix matrix = transform.Value; startPoint *= matrix; endPoint *= matrix; } PathFigureCollection collection = new PathFigureCollection(); collection.Add( new PathFigure( startPoint, new PathSegment[]{new LineSegment(endPoint, true)}, false // ==> not closed ) ); return collection; } ////// GetPathGeometryData - returns a byte[] which contains this Geometry represented /// as a path geometry's serialized format. /// internal override PathGeometryData GetPathGeometryData() { if (IsObviouslyEmpty()) { return Geometry.GetEmptyPathGeometryData(); } PathGeometryData data = new PathGeometryData(); data.FillRule = FillRule.EvenOdd; data.Matrix = CompositionResourceManager.TransformToMilMatrix3x2D(Transform); ByteStreamGeometryContext ctx = new ByteStreamGeometryContext(); ctx.BeginFigure(StartPoint, true /* is filled */, false /* is closed */); ctx.LineTo(EndPoint, true /* is stroked */, false /* is smooth join */); ctx.Close(); data.SerializedData = ctx.GetData(); return data; } #region Static Data private const UInt32 c_segmentCount = 1; private const UInt32 c_pointCount = 2; #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- RtfControlWordInfo.cs
- ListViewGroup.cs
- UnlockInstanceCommand.cs
- RefreshEventArgs.cs
- StoryFragments.cs
- _AcceptOverlappedAsyncResult.cs
- SocketPermission.cs
- TraceFilter.cs
- ContextBase.cs
- TextSimpleMarkerProperties.cs
- CompilerErrorCollection.cs
- StorageMappingItemLoader.cs
- InkSerializer.cs
- QuotedPrintableStream.cs
- VisualState.cs
- DnsPermission.cs
- GlyphingCache.cs
- OutOfProcStateClientManager.cs
- DataListDesigner.cs
- TableParaClient.cs
- ReflectTypeDescriptionProvider.cs
- SqlParameter.cs
- SeekStoryboard.cs
- SqlDataSourceEnumerator.cs
- SpotLight.cs
- HttpInputStream.cs
- MobileControlDesigner.cs
- DataViewListener.cs
- DataGridViewColumnDividerDoubleClickEventArgs.cs
- ItemsPanelTemplate.cs
- SqlCrossApplyToCrossJoin.cs
- EnumerableValidator.cs
- DataGridColumnCollection.cs
- Size3D.cs
- DataControlFieldCollection.cs
- DeclarativeConditionsCollection.cs
- NeutralResourcesLanguageAttribute.cs
- MatchingStyle.cs
- DynamicEndpointElement.cs
- AliasGenerator.cs
- MessageEventSubscriptionService.cs
- DoWorkEventArgs.cs
- columnmapkeybuilder.cs
- LogPolicy.cs
- AssemblyName.cs
- OpenTypeMethods.cs
- FormCollection.cs
- XmlSchemaDatatype.cs
- precedingsibling.cs
- FrameworkReadOnlyPropertyMetadata.cs
- sqlmetadatafactory.cs
- DataTable.cs
- TransportConfigurationTypeElement.cs
- RegistryKey.cs
- KeyInfo.cs
- ProxyGenerationError.cs
- SymDocumentType.cs
- CodeTypeReferenceExpression.cs
- SqlOuterApplyReducer.cs
- FixedDocument.cs
- XmlNamespaceMapping.cs
- SoapEnumAttribute.cs
- StringSource.cs
- BooleanStorage.cs
- FixedTextBuilder.cs
- PropertyNames.cs
- Quaternion.cs
- TemporaryBitmapFile.cs
- GC.cs
- DataGridViewCellErrorTextNeededEventArgs.cs
- QfeChecker.cs
- ContextMenuAutomationPeer.cs
- SchemaCollectionPreprocessor.cs
- WebPartManagerDesigner.cs
- AspNetHostingPermission.cs
- PaperSize.cs
- PixelShader.cs
- FileUpload.cs
- SHA384.cs
- Path.cs
- ReliableRequestSessionChannel.cs
- TreeView.cs
- DataTableReaderListener.cs
- ServiceMemoryGates.cs
- LicenseManager.cs
- StandardBindingOptionalReliableSessionElement.cs
- ImageAnimator.cs
- ReflectionServiceProvider.cs
- SqlDataSourceCustomCommandPanel.cs
- MsmqOutputMessage.cs
- PropertyConverter.cs
- WMIGenerator.cs
- Point3D.cs
- Visual.cs
- SQlBooleanStorage.cs
- FacetValues.cs
- DbLambda.cs
- SchemaNotation.cs
- InkCanvasSelection.cs
- BufferedReadStream.cs