Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / System / Windows / Documents / SpellerHighlightLayer.cs / 1305600 / SpellerHighlightLayer.cs
//---------------------------------------------------------------------------- // // File: SpellerHighlightLayer.cs // // Description: Highlight rendering for the Speller. // //--------------------------------------------------------------------------- using System; using MS.Internal; using System.Windows.Documents; using System.Windows.Media; using System.Collections; using System.Collections.Generic; using System.Collections.ObjectModel; namespace System.Windows.Documents { // Highlight rendering for the Speller. // The speller tags errors with red squigglies. internal class SpellerHighlightLayer : HighlightLayer { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors // Static constructor. static SpellerHighlightLayer() { _errorTextDecorations = GetErrorTextDecorations(); } // Constructor. internal SpellerHighlightLayer(Speller speller) { _speller = speller; } #endregion Constructors //------------------------------------------------------ // // Internal Methods // //----------------------------------------------------- #region Internal Methods // Returns a TextDecorationCollection used to tag spelling errors, // or DependencyProperty.UnsetValue if there's no error at the specified position. internal override object GetHighlightValue(StaticTextPointer textPosition, LogicalDirection direction) { object value; if (IsContentHighlighted(textPosition, direction)) { value = _errorTextDecorations; } else { value = DependencyProperty.UnsetValue; } return value; } // Returns true iff the indicated content has scoping highlights. internal override bool IsContentHighlighted(StaticTextPointer textPosition, LogicalDirection direction) { return _speller.StatusTable.IsRunType(textPosition, direction, SpellerStatusTable.RunType.Error); } // Returns the position of the next highlight start or end in an // indicated direction, or null if there is no such position. internal override StaticTextPointer GetNextChangePosition(StaticTextPointer textPosition, LogicalDirection direction) { return _speller.StatusTable.GetNextErrorTransition(textPosition, direction); } // Raises a Changed event for any listeners, covering the // specified text. internal void FireChangedEvent(ITextPointer start, ITextPointer end) { if (Changed != null) { Changed(this, new SpellerHighlightChangedEventArgs(start, end)); } } #endregion Internal Methods //------------------------------------------------------ // // Internal Properties // //------------------------------------------------------ #region Internal Properties // Type identifying this layer for Highlights.GetHighlightValue calls. internal override Type OwnerType { get { return typeof(SpellerHighlightLayer); } } #endregion Internal Properties //----------------------------------------------------- // // Internal Events // //------------------------------------------------------ #region Internal Events ////// Event raised when a highlight range is inserted, removed, moved, or /// has a local property value change. /// internal override event HighlightChangedEventHandler Changed; #endregion Internal Events //----------------------------------------------------- // // Private Methods // //----------------------------------------------------- #region Private Methods // Calculates TextDecorations for speller errors. private static TextDecorationCollection GetErrorTextDecorations() { // // Build a "squiggle" Brush. // // This works by hard-coding a 3 pixel high TextDecoration, and // then tiling horizontally. (We can't scale the squiggle in // the vertical direction, there's no support to limit tiling // to just the horizontal from the MIL.) // DrawingGroup drawingGroup = new DrawingGroup(); DrawingContext drawingContext = drawingGroup.Open(); Pen pen = new Pen(Brushes.Red, 0.33); // This is our tile: // // x x // x x // x // drawingContext.DrawLine(pen, new Point(0.0, 0.0), new Point(0.5, 1.0)); drawingContext.DrawLine(pen, new Point(0.5, 1.0), new Point(1.0, 0.0)); drawingContext.Close(); DrawingBrush brush = new DrawingBrush(drawingGroup); brush.TileMode = TileMode.Tile; brush.Viewport = new Rect(0, 0, 3, 3); brush.ViewportUnits = BrushMappingMode.Absolute; TextDecoration textDecoration = new TextDecoration( TextDecorationLocation.Underline, new Pen(brush, 3), 0, TextDecorationUnit.FontRecommended, TextDecorationUnit.Pixel); TextDecorationCollection decorationCollection = new TextDecorationCollection(); decorationCollection.Add(textDecoration); decorationCollection.Freeze(); return decorationCollection; } #endregion Private Methods //----------------------------------------------------- // // Private Types // //------------------------------------------------------ #region Private Types // Argument for the Changed event, encapsulates a highlight change. private class SpellerHighlightChangedEventArgs : HighlightChangedEventArgs { // Constructor. internal SpellerHighlightChangedEventArgs(ITextPointer start, ITextPointer end) { Listlist; Invariant.Assert(start.CompareTo(end) < 0, "Bogus start/end combination!"); list = new List (1); list.Add(new TextSegment(start, end)); _ranges = new ReadOnlyCollection (list); } // Collection of changed content ranges. internal override IList Ranges { get { return _ranges; } } // Type identifying the owner of the changed layer. internal override Type OwnerType { get { return typeof(SpellerHighlightLayer); } } // Collection of changed content ranges. private readonly ReadOnlyCollection _ranges; } #endregion Private Types //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Fields // Assocated Speller. private readonly Speller _speller; // Decorations for text flagged with a spelling error. private static readonly TextDecorationCollection _errorTextDecorations; #endregion Private Fields } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // // File: SpellerHighlightLayer.cs // // Description: Highlight rendering for the Speller. // //--------------------------------------------------------------------------- using System; using MS.Internal; using System.Windows.Documents; using System.Windows.Media; using System.Collections; using System.Collections.Generic; using System.Collections.ObjectModel; namespace System.Windows.Documents { // Highlight rendering for the Speller. // The speller tags errors with red squigglies. internal class SpellerHighlightLayer : HighlightLayer { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors // Static constructor. static SpellerHighlightLayer() { _errorTextDecorations = GetErrorTextDecorations(); } // Constructor. internal SpellerHighlightLayer(Speller speller) { _speller = speller; } #endregion Constructors //------------------------------------------------------ // // Internal Methods // //----------------------------------------------------- #region Internal Methods // Returns a TextDecorationCollection used to tag spelling errors, // or DependencyProperty.UnsetValue if there's no error at the specified position. internal override object GetHighlightValue(StaticTextPointer textPosition, LogicalDirection direction) { object value; if (IsContentHighlighted(textPosition, direction)) { value = _errorTextDecorations; } else { value = DependencyProperty.UnsetValue; } return value; } // Returns true iff the indicated content has scoping highlights. internal override bool IsContentHighlighted(StaticTextPointer textPosition, LogicalDirection direction) { return _speller.StatusTable.IsRunType(textPosition, direction, SpellerStatusTable.RunType.Error); } // Returns the position of the next highlight start or end in an // indicated direction, or null if there is no such position. internal override StaticTextPointer GetNextChangePosition(StaticTextPointer textPosition, LogicalDirection direction) { return _speller.StatusTable.GetNextErrorTransition(textPosition, direction); } // Raises a Changed event for any listeners, covering the // specified text. internal void FireChangedEvent(ITextPointer start, ITextPointer end) { if (Changed != null) { Changed(this, new SpellerHighlightChangedEventArgs(start, end)); } } #endregion Internal Methods //------------------------------------------------------ // // Internal Properties // //------------------------------------------------------ #region Internal Properties // Type identifying this layer for Highlights.GetHighlightValue calls. internal override Type OwnerType { get { return typeof(SpellerHighlightLayer); } } #endregion Internal Properties //----------------------------------------------------- // // Internal Events // //------------------------------------------------------ #region Internal Events /// /// Event raised when a highlight range is inserted, removed, moved, or /// has a local property value change. /// internal override event HighlightChangedEventHandler Changed; #endregion Internal Events //----------------------------------------------------- // // Private Methods // //----------------------------------------------------- #region Private Methods // Calculates TextDecorations for speller errors. private static TextDecorationCollection GetErrorTextDecorations() { // // Build a "squiggle" Brush. // // This works by hard-coding a 3 pixel high TextDecoration, and // then tiling horizontally. (We can't scale the squiggle in // the vertical direction, there's no support to limit tiling // to just the horizontal from the MIL.) // DrawingGroup drawingGroup = new DrawingGroup(); DrawingContext drawingContext = drawingGroup.Open(); Pen pen = new Pen(Brushes.Red, 0.33); // This is our tile: // // x x // x x // x // drawingContext.DrawLine(pen, new Point(0.0, 0.0), new Point(0.5, 1.0)); drawingContext.DrawLine(pen, new Point(0.5, 1.0), new Point(1.0, 0.0)); drawingContext.Close(); DrawingBrush brush = new DrawingBrush(drawingGroup); brush.TileMode = TileMode.Tile; brush.Viewport = new Rect(0, 0, 3, 3); brush.ViewportUnits = BrushMappingMode.Absolute; TextDecoration textDecoration = new TextDecoration( TextDecorationLocation.Underline, new Pen(brush, 3), 0, TextDecorationUnit.FontRecommended, TextDecorationUnit.Pixel); TextDecorationCollection decorationCollection = new TextDecorationCollection(); decorationCollection.Add(textDecoration); decorationCollection.Freeze(); return decorationCollection; } #endregion Private Methods //----------------------------------------------------- // // Private Types // //------------------------------------------------------ #region Private Types // Argument for the Changed event, encapsulates a highlight change. private class SpellerHighlightChangedEventArgs : HighlightChangedEventArgs { // Constructor. internal SpellerHighlightChangedEventArgs(ITextPointer start, ITextPointer end) { Listlist; Invariant.Assert(start.CompareTo(end) < 0, "Bogus start/end combination!"); list = new List (1); list.Add(new TextSegment(start, end)); _ranges = new ReadOnlyCollection (list); } // Collection of changed content ranges. internal override IList Ranges { get { return _ranges; } } // Type identifying the owner of the changed layer. internal override Type OwnerType { get { return typeof(SpellerHighlightLayer); } } // Collection of changed content ranges. private readonly ReadOnlyCollection _ranges; } #endregion Private Types //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Fields // Assocated Speller. private readonly Speller _speller; // Decorations for text flagged with a spelling error. private static readonly TextDecorationCollection _errorTextDecorations; #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
- ItemsControl.cs
- SingleAnimationUsingKeyFrames.cs
- ViewEvent.cs
- cookiecontainer.cs
- TemplateApplicationHelper.cs
- StoreItemCollection.cs
- MetabaseSettings.cs
- TransformGroup.cs
- TemplateEditingService.cs
- BoolLiteral.cs
- BinaryMessageEncodingBindingElement.cs
- ContainerControl.cs
- OperationResponse.cs
- ButtonAutomationPeer.cs
- AuthorizationRule.cs
- HtmlListAdapter.cs
- DefaultMemberAttribute.cs
- StringSource.cs
- TreeNodeEventArgs.cs
- ScriptingProfileServiceSection.cs
- DayRenderEvent.cs
- XmlFileEditor.cs
- SmtpSection.cs
- BaseDataBoundControl.cs
- TextDecorationUnitValidation.cs
- TraceFilter.cs
- SetStoryboardSpeedRatio.cs
- RectKeyFrameCollection.cs
- Internal.cs
- ErrorWebPart.cs
- DbReferenceCollection.cs
- EntitySqlQueryCacheEntry.cs
- OperatorExpressions.cs
- APCustomTypeDescriptor.cs
- DoubleAnimationClockResource.cs
- dataprotectionpermission.cs
- CheckBoxStandardAdapter.cs
- XPathDocumentIterator.cs
- TrustManager.cs
- ChildTable.cs
- HtmlGenericControl.cs
- TreeNodeMouseHoverEvent.cs
- PreloadHost.cs
- XhtmlBasicLabelAdapter.cs
- ColumnMap.cs
- Pair.cs
- IpcPort.cs
- ModifierKeysConverter.cs
- GraphicsPathIterator.cs
- HtmlTextArea.cs
- InvalidComObjectException.cs
- KnownBoxes.cs
- Geometry3D.cs
- UiaCoreApi.cs
- AspProxy.cs
- CodeIdentifier.cs
- RequestQueryParser.cs
- ProviderCollection.cs
- Int64Storage.cs
- ContextMenuStripGroupCollection.cs
- MultiPageTextView.cs
- CmsInterop.cs
- control.ime.cs
- WebZone.cs
- CollectionViewGroup.cs
- StorageConditionPropertyMapping.cs
- SplineKeyFrames.cs
- AmbientProperties.cs
- DocumentSequenceHighlightLayer.cs
- InfoCardRSAOAEPKeyExchangeFormatter.cs
- WebAdminConfigurationHelper.cs
- DesignerRegionCollection.cs
- WebPartManagerInternals.cs
- ReadOnlyDataSourceView.cs
- ScriptBehaviorDescriptor.cs
- PermissionSetTriple.cs
- WebPartExportVerb.cs
- QilIterator.cs
- WeakReferenceList.cs
- FontConverter.cs
- AssemblyInfo.cs
- DrawingContextWalker.cs
- ExtenderControl.cs
- ForwardPositionQuery.cs
- WindowsFormsLinkLabel.cs
- ISCIIEncoding.cs
- FileSystemWatcher.cs
- BindingMAnagerBase.cs
- ContentOperations.cs
- InstanceOwner.cs
- DataGridViewDataConnection.cs
- DataGridViewUtilities.cs
- MD5.cs
- ButtonChrome.cs
- _AcceptOverlappedAsyncResult.cs
- ConvertEvent.cs
- EventSourceCreationData.cs
- StylusPointPropertyInfo.cs
- InputLangChangeEvent.cs
- ToolStripButton.cs