Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Core / CSharp / System / Windows / Media / LineGeometry.cs / 1 / 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
- ParameterCollection.cs
- UrlAuthFailedErrorFormatter.cs
- BuildProviderUtils.cs
- DatatypeImplementation.cs
- ValueSerializer.cs
- CommandValueSerializer.cs
- UpdateTracker.cs
- XamlTypeMapper.cs
- XmlJsonWriter.cs
- ClassicBorderDecorator.cs
- XmlLinkedNode.cs
- AddInServer.cs
- BitmapSource.cs
- _emptywebproxy.cs
- ImageSource.cs
- PolicyException.cs
- DependencySource.cs
- XmlSchemaSubstitutionGroup.cs
- Line.cs
- DataControlImageButton.cs
- TextParagraphView.cs
- CachedTypeface.cs
- StringOutput.cs
- CapabilitiesRule.cs
- DocobjHost.cs
- SqlDataSourceQueryEditorForm.cs
- PrinterResolution.cs
- CollectionView.cs
- MultiBindingExpression.cs
- CompleteWizardStep.cs
- DesignSurfaceEvent.cs
- WinFormsSecurity.cs
- RMPublishingDialog.cs
- ProcessHost.cs
- TreeView.cs
- MultiTargetingUtil.cs
- SqlRetyper.cs
- IriParsingElement.cs
- Table.cs
- ButtonFlatAdapter.cs
- RegexCompiler.cs
- TogglePattern.cs
- control.ime.cs
- UnaryQueryOperator.cs
- SecurityProtocolCorrelationState.cs
- InstanceContext.cs
- NativeMethods.cs
- MSAANativeProvider.cs
- MemberRelationshipService.cs
- RepeatInfo.cs
- EncodedStreamFactory.cs
- UserControl.cs
- DataSourceGeneratorException.cs
- ellipse.cs
- SourceElementsCollection.cs
- Int16AnimationBase.cs
- FixedSOMLineRanges.cs
- WebReferencesBuildProvider.cs
- ServerProtocol.cs
- StaticExtension.cs
- PopupRoot.cs
- FileSystemWatcher.cs
- PropertyChangedEventArgs.cs
- SmiConnection.cs
- VSWCFServiceContractGenerator.cs
- AnnotationResourceCollection.cs
- SuppressMergeCheckAttribute.cs
- DefaultExpression.cs
- VerticalAlignConverter.cs
- DiscoveryClientChannelFactory.cs
- SimpleFieldTemplateFactory.cs
- Int32Animation.cs
- IDispatchConstantAttribute.cs
- XmlDataDocument.cs
- EdmProviderManifest.cs
- LongTypeConverter.cs
- PointUtil.cs
- MissingFieldException.cs
- DbConnectionPoolIdentity.cs
- StylusPointProperties.cs
- xmlsaver.cs
- ReliableRequestSessionChannel.cs
- CommandPlan.cs
- BamlMapTable.cs
- WebPartConnectionsEventArgs.cs
- InkCanvasFeedbackAdorner.cs
- DigitShape.cs
- DataGridViewRowCollection.cs
- CodeNamespaceImportCollection.cs
- FullTextBreakpoint.cs
- Cursors.cs
- OciEnlistContext.cs
- SineEase.cs
- CodeAttributeArgument.cs
- RuleDefinitions.cs
- ReadOnlyDictionary.cs
- TypeExtension.cs
- BamlRecords.cs
- ResourceWriter.cs
- ModelUIElement3D.cs