Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / MS / Internal / PtsHost / UIElementParaClient.cs / 1305600 / UIElementParaClient.cs
//---------------------------------------------------------------------------- // // Copyright (C) Microsoft Corporation. All rights reserved. // // Description: UIElementParaClient class is responsible for handling display // related data of BlockUIContainers. // //--------------------------------------------------------------------------- using System; // IntPtr using System.Collections.Generic; // Listusing System.Collections.ObjectModel; // ReadOnlyCollection using System.Security; // SecurityCritical using System.Windows; // FrameworkElement using System.Windows.Media; // Visual using System.Windows.Documents; // BlockUIContainer using MS.Internal.Documents; // ParagraphResult, UIElementIsland using MS.Internal.Text; // TextDpi using MS.Internal.PtsHost.UnsafeNativeMethods; // PTS namespace MS.Internal.PtsHost { /// /// FloaterParaClient class is responsible for handling display related /// data of paragraphs associated with nested floaters. /// internal sealed class UIElementParaClient : FloaterBaseParaClient { //------------------------------------------------------------------- // // Constructors // //------------------------------------------------------------------- #region Constructors ////// Constructor. /// /// internal UIElementParaClient(FloaterBaseParagraph paragraph) : base(paragraph) { } #endregion Constructors //-------------------------------------------------------------------- // // Internal Methods // //------------------------------------------------------------------- #region Internal Methods ////// Arrange paragraph. /// ////// Critical - as this calls Critical function PTS.FsQueryFloaterDetails /// Safe - The IntPtr parameters passed to PTS.FsQueryFloaterDetails are SecurityCriticalDataForSet /// which ensures that partial trust code won't be able to set it to a random value. /// The textdetails parameter passed to other methods is generated securely in this function. /// [SecurityCritical, SecurityTreatAsSafe] protected override void OnArrange() { base.OnArrange(); PTS.FSFLOATERDETAILS floaterDetails; PTS.Validate(PTS.FsQueryFloaterDetails(PtsContext.Context, _paraHandle.Value, out floaterDetails)); // Get paragraph's rectangle. _rect = floaterDetails.fsrcFloater; MbpInfo mbp = MbpInfo.FromElement(Paragraph.Element); if(ParentFlowDirection != PageFlowDirection) { mbp.MirrorMargin(); PTS.FSRECT pageRect = _pageContext.PageRect; PTS.Validate(PTS.FsTransformRectangle(PTS.FlowDirectionToFswdir(ParentFlowDirection), ref pageRect, ref _rect, PTS.FlowDirectionToFswdir(PageFlowDirection), out _rect)); } _rect.u += mbp.MarginLeft; _rect.du -= mbp.MarginLeft + mbp.MarginRight; _rect.du = Math.Max(TextDpi.ToTextDpi(TextDpi.MinWidth), _rect.du); _rect.dv = Math.Max(TextDpi.ToTextDpi(TextDpi.MinWidth), _rect.dv); } ////// Returns collection of rectangles for the BlockUIContainer element. /// If the element is not the paragraph's owner, empty collection is returned. /// internal override ListGetRectangles(ContentElement e, int start, int length) { List rectangles = new List (); if (Paragraph.Element == e) { // We have found the element. Return rectangles for this paragraph. GetRectanglesForParagraphElement(out rectangles); } return rectangles; } /// /// Validates visual node associated with paragraph. /// internal override void ValidateVisual(PTS.FSKUPDATE fskupdInherited) { // Obtain all mbd info MbpInfo mbp = MbpInfo.FromElement(Paragraph.Element); // MIRROR entire element to interface with underlying layout tree. // Border/Padding does not need to be mirrored, as it'll be mirrored with the content. PtsHelper.UpdateMirroringTransform(PageFlowDirection, ThisFlowDirection, _visual, TextDpi.FromTextDpi(2 * _rect.u + _rect.du)); // Add UIElementIsland to visual tree and set appropiate offset. UIElementIsland uiElementIsland = ((UIElementParagraph)Paragraph).UIElementIsland; if (uiElementIsland != null) { if (_visual.Children.Count != 1 || _visual.Children[0] != uiElementIsland) { // Disconnect UIElementIsland from its old parent. Visual currentParent = VisualTreeHelper.GetParent(uiElementIsland) as Visual; if (currentParent != null) { ContainerVisual parent = currentParent as ContainerVisual; Invariant.Assert(parent != null, "Parent should always derives from ContainerVisual."); parent.Children.Remove(uiElementIsland); } _visual.Children.Clear(); _visual.Children.Add(uiElementIsland); } uiElementIsland.Offset = new PTS.FSVECTOR(_rect.u + mbp.BPLeft, _rect.v + mbp.BPTop).FromTextDpi(); } else { _visual.Children.Clear(); } // Draw background and borders. Brush backgroundBrush = (Brush)Paragraph.Element.GetValue(TextElement.BackgroundProperty); _visual.DrawBackgroundAndBorder(backgroundBrush, mbp.BorderBrush, mbp.Border, _rect.FromTextDpi(), IsFirstChunk, IsLastChunk); } ////// Returns tight bounding path geometry. /// internal Geometry GetTightBoundingGeometryFromTextPositions(ITextPointer startPosition, ITextPointer endPosition) { if (startPosition.CompareTo(((BlockUIContainer)Paragraph.Element).ContentEnd) < 0 && endPosition.CompareTo(((BlockUIContainer)Paragraph.Element).ContentStart) > 0) { return new RectangleGeometry(_rect.FromTextDpi()); } return null; } ////// Creates paragraph result representing this paragraph. /// ///internal override ParagraphResult CreateParagraphResult() { return new UIElementParagraphResult(this); } /// /// Hit tests to the correct IInputElement within the paragraph that /// the mouse is over. /// internal override IInputElement InputHitTest(PTS.FSPOINT pt) { if (_rect.Contains(pt)) { return Paragraph.Element as IInputElement; } return null; } ////// Returns TextContentRange for the content of the paragraph. /// internal override TextContentRange GetTextContentRange() { BlockUIContainer elementOwner = (BlockUIContainer)Paragraph.Element; return TextContainerHelper.GetTextContentRangeForTextElement(elementOwner); } #endregion Internal Methods } } // 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
- XmlObjectSerializer.cs
- ExpressionBuilderContext.cs
- WebPartDeleteVerb.cs
- ProcessInfo.cs
- TypeSystem.cs
- SortKey.cs
- SimpleRecyclingCache.cs
- HitTestFilterBehavior.cs
- SoapBinding.cs
- XPathNodeList.cs
- ListViewDeletedEventArgs.cs
- OracleConnectionString.cs
- NameSpaceEvent.cs
- TreeNodeClickEventArgs.cs
- ConnectionConsumerAttribute.cs
- HttpCacheVaryByContentEncodings.cs
- TextInfo.cs
- MetadataException.cs
- ImageCodecInfo.cs
- NetworkAddressChange.cs
- ISO2022Encoding.cs
- Size.cs
- HostVisual.cs
- MenuItem.cs
- ComplexTypeEmitter.cs
- Page.cs
- X509ScopedServiceCertificateElementCollection.cs
- ResourcePool.cs
- EventHandlerService.cs
- WindowsImpersonationContext.cs
- WebRequestModulesSection.cs
- CodeObject.cs
- DesignOnlyAttribute.cs
- BrowserCapabilitiesFactory35.cs
- XmlSchemaSimpleType.cs
- ToolBar.cs
- CounterSampleCalculator.cs
- ItemTypeToolStripMenuItem.cs
- ImageField.cs
- RowSpanVector.cs
- ValueExpressions.cs
- XmlSecureResolver.cs
- WeakReferenceList.cs
- XPathDocumentBuilder.cs
- dbenumerator.cs
- Environment.cs
- GeneralTransformGroup.cs
- _TransmitFileOverlappedAsyncResult.cs
- SspiHelper.cs
- IndexedString.cs
- AxHost.cs
- ContentType.cs
- CatalogPartCollection.cs
- BitmapEffectGroup.cs
- XmlExtensionFunction.cs
- DocumentCollection.cs
- HttpCachePolicyElement.cs
- Array.cs
- RSAOAEPKeyExchangeFormatter.cs
- Vector3DValueSerializer.cs
- DefaultValueConverter.cs
- DataContractJsonSerializer.cs
- FormatException.cs
- Collection.cs
- EndOfStreamException.cs
- ThemeDirectoryCompiler.cs
- ConfigurationStrings.cs
- TableRow.cs
- ConfigXmlWhitespace.cs
- SecurityMode.cs
- PropertyChangedEventArgs.cs
- OutputCacheProfileCollection.cs
- ResourceProperty.cs
- SafeNativeMethods.cs
- IndexOutOfRangeException.cs
- HtmlButton.cs
- HuffmanTree.cs
- SqlSelectStatement.cs
- ResourceIDHelper.cs
- WindowsAuthenticationEventArgs.cs
- TextCompositionManager.cs
- StringReader.cs
- UInt16Converter.cs
- StrongTypingException.cs
- DataGridViewCellToolTipTextNeededEventArgs.cs
- TPLETWProvider.cs
- EncodingDataItem.cs
- JsonDeserializer.cs
- PackageRelationshipSelector.cs
- ServiceModelSecurityTokenTypes.cs
- UpdateProgress.cs
- WindowsUserNameSecurityTokenAuthenticator.cs
- MsmqTransportSecurity.cs
- TdsParserSafeHandles.cs
- SafeLibraryHandle.cs
- Validator.cs
- TemplateBindingExtensionConverter.cs
- DbModificationCommandTree.cs
- Oid.cs
- DataGridViewCell.cs