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
- SchemaElement.cs
- Simplifier.cs
- PrePrepareMethodAttribute.cs
- LineInfo.cs
- EventManager.cs
- BaseTransportHeaders.cs
- Util.cs
- BaseResourcesBuildProvider.cs
- DataConnectionHelper.cs
- OleDbParameter.cs
- GCHandleCookieTable.cs
- ValidationPropertyAttribute.cs
- ContentPlaceHolder.cs
- BitmapDownload.cs
- GridEntryCollection.cs
- MobileControlsSectionHelper.cs
- DataGridCommandEventArgs.cs
- UserControl.cs
- SafeNativeMethods.cs
- ClientTargetCollection.cs
- CellParagraph.cs
- Mappings.cs
- SimpleWorkerRequest.cs
- RecipientServiceModelSecurityTokenRequirement.cs
- XmlSchemaAttributeGroup.cs
- WebHostedComPlusServiceHost.cs
- EditingCoordinator.cs
- QuaternionRotation3D.cs
- UnsafeNativeMethods.cs
- StandardRuntimeEnumValidator.cs
- NetMsmqBindingCollectionElement.cs
- SessionPageStateSection.cs
- BinaryCommonClasses.cs
- DeferredSelectedIndexReference.cs
- ApplicationServiceManager.cs
- TemplateControlBuildProvider.cs
- DBSqlParserColumnCollection.cs
- InProcStateClientManager.cs
- TreeNodeStyle.cs
- SettingsPropertyValueCollection.cs
- ClipboardProcessor.cs
- ResourceDictionaryCollection.cs
- AxParameterData.cs
- TypeResolver.cs
- TextWriterTraceListener.cs
- FormClosedEvent.cs
- XmlStringTable.cs
- LicenseManager.cs
- DrawingAttributeSerializer.cs
- HttpTransportElement.cs
- UnsafeNativeMethods.cs
- TextEmbeddedObject.cs
- Vector3DKeyFrameCollection.cs
- CustomWebEventKey.cs
- PatternMatcher.cs
- HtmlInputButton.cs
- ClientCredentialsElement.cs
- StreamGeometry.cs
- CircleHotSpot.cs
- BatchParser.cs
- ConfigurationValidatorBase.cs
- Properties.cs
- CodeSubDirectory.cs
- AccessibleObject.cs
- ClientSponsor.cs
- EventSetter.cs
- ValidatingReaderNodeData.cs
- ButtonChrome.cs
- Matrix.cs
- SchemaElement.cs
- NativeMethods.cs
- MatrixValueSerializer.cs
- SrgsElementFactory.cs
- SafeNativeMethods.cs
- StyleTypedPropertyAttribute.cs
- RemoteWebConfigurationHostStream.cs
- TextDecoration.cs
- IISMapPath.cs
- RootBuilder.cs
- ResolveNameEventArgs.cs
- CalendarButton.cs
- RegexFCD.cs
- DataRelation.cs
- columnmapfactory.cs
- AvTrace.cs
- ResourceContainer.cs
- EntityContainerAssociationSetEnd.cs
- UndoUnit.cs
- ValidatorUtils.cs
- PrintControllerWithStatusDialog.cs
- RadioButtonRenderer.cs
- MessageQueuePermissionEntryCollection.cs
- StylusPlugInCollection.cs
- GridViewColumnCollection.cs
- WeakKeyDictionary.cs
- ConstructorNeedsTagAttribute.cs
- NativeMethods.cs
- FixedSOMContainer.cs
- Missing.cs
- OdbcDataReader.cs