Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Framework / System / Windows / Shapes / ellipse.cs / 1 / ellipse.cs
//---------------------------------------------------------------------------- // File: Ellipse.cs // // Description: // Implementation of Ellipse shape element. // // History: // 05/30/02 - AdSmith - Created. // // Copyright (C) 2003 by Microsoft Corporation. All rights reserved. // //--------------------------------------------------------------------------- using System.Windows.Shapes; using System.Diagnostics; using System.Windows.Threading; using System.Windows; using System.Windows.Media; using MS.Internal; using System.ComponentModel; using System; namespace System.Windows.Shapes { ////// The ellipse shape element /// This element (like all shapes) belongs under a Canvas, /// and will be presented by the parent canvas. /// ///public sealed class Ellipse : Shape { #region Constructors /// /// Instantiates a new instance of a Ellipse. /// ///public Ellipse() { } // The default stretch mode of Ellipse is Fill static Ellipse() { StretchProperty.OverrideMetadata(typeof(Ellipse), new FrameworkPropertyMetadata(Stretch.Fill)); } #endregion Constructors #region Dynamic Properties // For an Ellipse, RenderedGeometry = defining geometry and GeometryTransform = Identity /// /// The RenderedGeometry property returns the final rendered geometry /// public override Geometry RenderedGeometry { get { // RenderedGeometry = defining geometry return DefiningGeometry; } } ////// Return the transformation applied to the geometry before rendering /// public override Transform GeometryTransform { get { return Transform.Identity; } } #endregion Dynamic Properties #region Protected ////// Updates DesiredSize of the Ellipse. Called by parent UIElement. This is the first pass of layout. /// /// Constraint size is an "upper limit" that Ellipse should not exceed. ///Ellipse's desired size. protected override Size MeasureOverride(Size constraint) { if (Stretch == Stretch.UniformToFill) { double width = constraint.Width; double height = constraint.Height; if (Double.IsInfinity(width) && Double.IsInfinity(height)) { return GetNaturalSize(); } else if (Double.IsInfinity(width) || Double.IsInfinity(height)) { width = Math.Min(width, height); } else { width = Math.Max(width, height); } return new Size(width, width); } return GetNaturalSize(); } ////// Returns the final size of the shape and caches the bounds. /// protected override Size ArrangeOverride(Size finalSize) { // We construct the rectangle to fit finalSize with the appropriate Stretch mode. The rendering // transformation will thus be the identity. double penThickness = GetStrokeThickness(); double margin = penThickness / 2; _rect = new Rect( margin, // X margin, // Y Math.Max(0, finalSize.Width - penThickness), // Width Math.Max(0, finalSize.Height - penThickness)); // Height switch (Stretch) { case Stretch.None: // A 0 Rect.Width and Rect.Height rectangle _rect.Width = _rect.Height = 0; break; case Stretch.Fill: // The most common case: a rectangle that fills the box. // _rect has already been initialized for that. break; case Stretch.Uniform: // The maximal square that fits in the final box if (_rect.Width > _rect.Height) { _rect.Width = _rect.Height; } else // _rect.Width <= _rect.Height { _rect.Height = _rect.Width; } break; case Stretch.UniformToFill: // The minimal square that fills the final box if (_rect.Width < _rect.Height) { _rect.Width = _rect.Height; } else // _rect.Width >= _rect.Height { _rect.Height = _rect.Width; } break; } ResetRenderedGeometry(); return finalSize; } ////// Get the ellipse that defines this shape /// protected override Geometry DefiningGeometry { get { if (_rect.IsEmpty) { return Geometry.Empty; } return new EllipseGeometry(_rect); } } ////// Render callback. /// protected override void OnRender(DrawingContext drawingContext) { if (!_rect.IsEmpty) { Pen pen = GetPen(); drawingContext.DrawGeometry(Fill, pen, new EllipseGeometry(_rect)); } } #endregion Protected #region Internal Methods internal override void CacheDefiningGeometry() { double margin = GetStrokeThickness() / 2; _rect = new Rect(margin, margin, 0, 0); } ////// Get the natural size of the geometry that defines this shape /// internal override Size GetNaturalSize() { double strokeThickness = GetStrokeThickness(); return new Size(strokeThickness, strokeThickness); } ////// Get the bonds of the rectangle that defines this shape /// internal override Rect GetDefiningGeometryBounds() { return _rect; } // // 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 13; } } #endregion Internal Methods #region Private Fields private Rect _rect = Rect.Empty; #endregion Private Fields } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // File: Ellipse.cs // // Description: // Implementation of Ellipse shape element. // // History: // 05/30/02 - AdSmith - Created. // // Copyright (C) 2003 by Microsoft Corporation. All rights reserved. // //--------------------------------------------------------------------------- using System.Windows.Shapes; using System.Diagnostics; using System.Windows.Threading; using System.Windows; using System.Windows.Media; using MS.Internal; using System.ComponentModel; using System; namespace System.Windows.Shapes { ////// The ellipse shape element /// This element (like all shapes) belongs under a Canvas, /// and will be presented by the parent canvas. /// ///public sealed class Ellipse : Shape { #region Constructors /// /// Instantiates a new instance of a Ellipse. /// ///public Ellipse() { } // The default stretch mode of Ellipse is Fill static Ellipse() { StretchProperty.OverrideMetadata(typeof(Ellipse), new FrameworkPropertyMetadata(Stretch.Fill)); } #endregion Constructors #region Dynamic Properties // For an Ellipse, RenderedGeometry = defining geometry and GeometryTransform = Identity /// /// The RenderedGeometry property returns the final rendered geometry /// public override Geometry RenderedGeometry { get { // RenderedGeometry = defining geometry return DefiningGeometry; } } ////// Return the transformation applied to the geometry before rendering /// public override Transform GeometryTransform { get { return Transform.Identity; } } #endregion Dynamic Properties #region Protected ////// Updates DesiredSize of the Ellipse. Called by parent UIElement. This is the first pass of layout. /// /// Constraint size is an "upper limit" that Ellipse should not exceed. ///Ellipse's desired size. protected override Size MeasureOverride(Size constraint) { if (Stretch == Stretch.UniformToFill) { double width = constraint.Width; double height = constraint.Height; if (Double.IsInfinity(width) && Double.IsInfinity(height)) { return GetNaturalSize(); } else if (Double.IsInfinity(width) || Double.IsInfinity(height)) { width = Math.Min(width, height); } else { width = Math.Max(width, height); } return new Size(width, width); } return GetNaturalSize(); } ////// Returns the final size of the shape and caches the bounds. /// protected override Size ArrangeOverride(Size finalSize) { // We construct the rectangle to fit finalSize with the appropriate Stretch mode. The rendering // transformation will thus be the identity. double penThickness = GetStrokeThickness(); double margin = penThickness / 2; _rect = new Rect( margin, // X margin, // Y Math.Max(0, finalSize.Width - penThickness), // Width Math.Max(0, finalSize.Height - penThickness)); // Height switch (Stretch) { case Stretch.None: // A 0 Rect.Width and Rect.Height rectangle _rect.Width = _rect.Height = 0; break; case Stretch.Fill: // The most common case: a rectangle that fills the box. // _rect has already been initialized for that. break; case Stretch.Uniform: // The maximal square that fits in the final box if (_rect.Width > _rect.Height) { _rect.Width = _rect.Height; } else // _rect.Width <= _rect.Height { _rect.Height = _rect.Width; } break; case Stretch.UniformToFill: // The minimal square that fills the final box if (_rect.Width < _rect.Height) { _rect.Width = _rect.Height; } else // _rect.Width >= _rect.Height { _rect.Height = _rect.Width; } break; } ResetRenderedGeometry(); return finalSize; } ////// Get the ellipse that defines this shape /// protected override Geometry DefiningGeometry { get { if (_rect.IsEmpty) { return Geometry.Empty; } return new EllipseGeometry(_rect); } } ////// Render callback. /// protected override void OnRender(DrawingContext drawingContext) { if (!_rect.IsEmpty) { Pen pen = GetPen(); drawingContext.DrawGeometry(Fill, pen, new EllipseGeometry(_rect)); } } #endregion Protected #region Internal Methods internal override void CacheDefiningGeometry() { double margin = GetStrokeThickness() / 2; _rect = new Rect(margin, margin, 0, 0); } ////// Get the natural size of the geometry that defines this shape /// internal override Size GetNaturalSize() { double strokeThickness = GetStrokeThickness(); return new Size(strokeThickness, strokeThickness); } ////// Get the bonds of the rectangle that defines this shape /// internal override Rect GetDefiningGeometryBounds() { return _rect; } // // 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 13; } } #endregion Internal Methods #region Private Fields private Rect _rect = Rect.Empty; #endregion Private Fields } } // 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
- FormViewPageEventArgs.cs
- InputEventArgs.cs
- RawStylusInputCustomDataList.cs
- PackWebResponse.cs
- StorageFunctionMapping.cs
- TextSerializer.cs
- ProtectedConfiguration.cs
- ResXBuildProvider.cs
- GroupBoxRenderer.cs
- IFlowDocumentViewer.cs
- BinaryExpressionHelper.cs
- ConstraintStruct.cs
- JsonServiceDocumentSerializer.cs
- SqlDataSource.cs
- NativeMethods.cs
- SessionStateModule.cs
- ValidationError.cs
- ApplicationGesture.cs
- Control.cs
- Camera.cs
- ParameterElement.cs
- versioninfo.cs
- GeometryConverter.cs
- PointCollection.cs
- coordinatorscratchpad.cs
- odbcmetadatafactory.cs
- initElementDictionary.cs
- MarginCollapsingState.cs
- Int32Animation.cs
- XPathChildIterator.cs
- IChannel.cs
- ConsoleTraceListener.cs
- PeerApplicationLaunchInfo.cs
- SafeArchiveContext.cs
- ObjRef.cs
- ManagementBaseObject.cs
- EmptyElement.cs
- ByteArrayHelperWithString.cs
- StatementContext.cs
- XpsFontSubsetter.cs
- ReadWriteSpinLock.cs
- DeferredSelectedIndexReference.cs
- CheckedPointers.cs
- XamlTreeBuilder.cs
- XmlQualifiedName.cs
- ToolTipService.cs
- AgileSafeNativeMemoryHandle.cs
- ClrProviderManifest.cs
- PartialCachingControl.cs
- HMAC.cs
- TreeNodeStyle.cs
- ResourceSetExpression.cs
- DispatchWrapper.cs
- UserControl.cs
- safePerfProviderHandle.cs
- NativeRightsManagementAPIsStructures.cs
- Math.cs
- KeyValuePair.cs
- XamlReader.cs
- KeyValuePairs.cs
- DockAndAnchorLayout.cs
- LocalIdKeyIdentifierClause.cs
- OdbcCommand.cs
- SiteMapProvider.cs
- CommandField.cs
- ExpressionList.cs
- RSAPKCS1SignatureFormatter.cs
- EastAsianLunisolarCalendar.cs
- SyntaxCheck.cs
- SiteMapDataSourceView.cs
- Viewport3DVisual.cs
- DateTimeOffsetStorage.cs
- Environment.cs
- AnnotationService.cs
- xmlsaver.cs
- CqlParser.cs
- ContractCodeDomInfo.cs
- userdatakeys.cs
- NamedPipeAppDomainProtocolHandler.cs
- DesignTimeHTMLTextWriter.cs
- ServiceElementCollection.cs
- Common.cs
- SessionStateUtil.cs
- UrlPath.cs
- NonParentingControl.cs
- ImageSourceValueSerializer.cs
- ObjectDataSourceSelectingEventArgs.cs
- AttachInfo.cs
- TypedColumnHandler.cs
- EntityDataSourceWizardForm.cs
- HMACSHA256.cs
- CdpEqualityComparer.cs
- SessionSymmetricTransportSecurityProtocolFactory.cs
- PictureBox.cs
- DataRecordInternal.cs
- XmlSchemaExternal.cs
- QuotedPrintableStream.cs
- LineGeometry.cs
- TransformDescriptor.cs
- DeploymentSection.cs