Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / wpf / src / Core / CSharp / System / Windows / SizeChangedInfo.cs / 1 / SizeChangedInfo.cs
using System; namespace System.Windows { ////// The SizeChangedinfo class is used as a parameter to OnSizeRenderChanged. /// public class SizeChangedInfo { ////// Initializes a new instance of the SizeChangedinfo class. /// /// /// The element which size is changing. /// /// /// The size of the object before update. New size is element.RenderSize /// /// /// The flag indicating that width component of the size changed. Note that due to double math /// effects, the it may be (previousSize.Width != newSize.Width) and widthChanged = true. /// This may happen in layout when sizes of objects are fluctuating because of a precision "jitter" of /// the input parameters, but the overall scene is considered to be "the same" so no visible changes /// will be detected. Typically, the handler of SizeChangedEvent should check this bit to avoid /// invalidation of layout if the dimension didn't change. /// /// /// The flag indicating that height component of the size changed. Note that due to double math /// effects, the it may be (previousSize.Height != newSize.Height) and heightChanged = true. /// This may happen in layout when sizes of objects are fluctuating because of a precision "jitter" of /// the input parameters, but the overall scene is considered to be "the same" so no visible changes /// will be detected. Typically, the handler of SizeChangedEvent should check this bit to avoid /// invalidation of layout if the dimension didn't change. /// public SizeChangedInfo(UIElement element, Size previousSize, bool widthChanged, bool heightChanged) { _element = element; _previousSize = previousSize; _widthChanged = widthChanged; _heightChanged = heightChanged; } ////// Read-only access to the previous Size /// public Size PreviousSize { get { return _previousSize; } } ////// Read-only access to the new Size /// public Size NewSize { get { return _element.RenderSize; } } ////// Read-only access to the flag indicating that Width component of the size changed. /// Note that due to double math /// effects, the it may be (previousSize.Width != newSize.Width) and widthChanged = true. /// This may happen in layout when sizes of objects are fluctuating because of a precision "jitter" of /// the input parameters, but the overall scene is considered to be "the same" so no visible changes /// will be detected. Typically, the handler of SizeChangedEvent should check this bit to avoid /// invalidation of layout if the dimension didn't change. /// public bool WidthChanged { get { return _widthChanged; } } ////// Read-only access to the flag indicating that Height component of the size changed. /// Note that due to double math /// effects, the it may be (previousSize.Height != newSize.Height) and heightChanged = true. /// This may happen in layout when sizes of objects are fluctuating because of a precision "jitter" of /// the input parameters, but the overall scene is considered to be "the same" so no visible changes /// will be detected. Typically, the handler of SizeChangedEvent should check this bit to avoid /// invalidation of layout if the dimension didn't change. /// public bool HeightChanged { get { return _heightChanged; } } //this method is used by UIElement to "accumulate" several cosequitive layout updates //into the single args object cahced on UIElement. Since the SizeChanged is deferred event, //there could be several size changes before it will actually fire. internal void Update(bool widthChanged, bool heightChanged) { _widthChanged = _widthChanged | widthChanged; _heightChanged = _heightChanged | heightChanged; } internal UIElement Element { get { return _element; } } private UIElement _element; private Size _previousSize; private bool _widthChanged; private bool _heightChanged; internal SizeChangedInfo Next; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. using System; namespace System.Windows { ////// The SizeChangedinfo class is used as a parameter to OnSizeRenderChanged. /// public class SizeChangedInfo { ////// Initializes a new instance of the SizeChangedinfo class. /// /// /// The element which size is changing. /// /// /// The size of the object before update. New size is element.RenderSize /// /// /// The flag indicating that width component of the size changed. Note that due to double math /// effects, the it may be (previousSize.Width != newSize.Width) and widthChanged = true. /// This may happen in layout when sizes of objects are fluctuating because of a precision "jitter" of /// the input parameters, but the overall scene is considered to be "the same" so no visible changes /// will be detected. Typically, the handler of SizeChangedEvent should check this bit to avoid /// invalidation of layout if the dimension didn't change. /// /// /// The flag indicating that height component of the size changed. Note that due to double math /// effects, the it may be (previousSize.Height != newSize.Height) and heightChanged = true. /// This may happen in layout when sizes of objects are fluctuating because of a precision "jitter" of /// the input parameters, but the overall scene is considered to be "the same" so no visible changes /// will be detected. Typically, the handler of SizeChangedEvent should check this bit to avoid /// invalidation of layout if the dimension didn't change. /// public SizeChangedInfo(UIElement element, Size previousSize, bool widthChanged, bool heightChanged) { _element = element; _previousSize = previousSize; _widthChanged = widthChanged; _heightChanged = heightChanged; } ////// Read-only access to the previous Size /// public Size PreviousSize { get { return _previousSize; } } ////// Read-only access to the new Size /// public Size NewSize { get { return _element.RenderSize; } } ////// Read-only access to the flag indicating that Width component of the size changed. /// Note that due to double math /// effects, the it may be (previousSize.Width != newSize.Width) and widthChanged = true. /// This may happen in layout when sizes of objects are fluctuating because of a precision "jitter" of /// the input parameters, but the overall scene is considered to be "the same" so no visible changes /// will be detected. Typically, the handler of SizeChangedEvent should check this bit to avoid /// invalidation of layout if the dimension didn't change. /// public bool WidthChanged { get { return _widthChanged; } } ////// Read-only access to the flag indicating that Height component of the size changed. /// Note that due to double math /// effects, the it may be (previousSize.Height != newSize.Height) and heightChanged = true. /// This may happen in layout when sizes of objects are fluctuating because of a precision "jitter" of /// the input parameters, but the overall scene is considered to be "the same" so no visible changes /// will be detected. Typically, the handler of SizeChangedEvent should check this bit to avoid /// invalidation of layout if the dimension didn't change. /// public bool HeightChanged { get { return _heightChanged; } } //this method is used by UIElement to "accumulate" several cosequitive layout updates //into the single args object cahced on UIElement. Since the SizeChanged is deferred event, //there could be several size changes before it will actually fire. internal void Update(bool widthChanged, bool heightChanged) { _widthChanged = _widthChanged | widthChanged; _heightChanged = _heightChanged | heightChanged; } internal UIElement Element { get { return _element; } } private UIElement _element; private Size _previousSize; private bool _widthChanged; private bool _heightChanged; internal SizeChangedInfo Next; } } // 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
- DataTable.cs
- EditCommandColumn.cs
- WebPartDisplayMode.cs
- TabControlEvent.cs
- StateRuntime.cs
- ImageCodecInfoPrivate.cs
- BindingGroup.cs
- ValueChangedEventManager.cs
- NotifyParentPropertyAttribute.cs
- KeyValuePair.cs
- AuthenticationConfig.cs
- ZipFileInfo.cs
- DynamicAttribute.cs
- RadioButton.cs
- BamlTreeNode.cs
- SByteConverter.cs
- hresults.cs
- ExpressionBuilderContext.cs
- XmlDownloadManager.cs
- ITextView.cs
- ReadOnlyCollection.cs
- ThrowHelper.cs
- StringBlob.cs
- EntitySetRetriever.cs
- CacheMemory.cs
- PaperSource.cs
- SecurityBindingElement.cs
- HtmlInputCheckBox.cs
- CallTemplateAction.cs
- DataControlFieldCollection.cs
- EventLogPermission.cs
- DecoderBestFitFallback.cs
- Utils.cs
- SHA256.cs
- SQLDecimal.cs
- BulletedListEventArgs.cs
- EntityType.cs
- TextEditorContextMenu.cs
- ControlAdapter.cs
- ReadOnlyMetadataCollection.cs
- StylusButtonEventArgs.cs
- TypePresenter.xaml.cs
- SingleStorage.cs
- EntityWithChangeTrackerStrategy.cs
- WindowsAltTab.cs
- EventPrivateKey.cs
- DataSourceCache.cs
- DiscreteKeyFrames.cs
- QilList.cs
- DeviceOverridableAttribute.cs
- WebPartConnectionsDisconnectVerb.cs
- SqlDataSourceView.cs
- SiteMapSection.cs
- CellLabel.cs
- LassoHelper.cs
- MetadataSource.cs
- FreezableCollection.cs
- ToolboxDataAttribute.cs
- FormsAuthenticationModule.cs
- GridView.cs
- DoubleLinkList.cs
- NativeMethodsCLR.cs
- WebPartManager.cs
- RelatedCurrencyManager.cs
- WindowHideOrCloseTracker.cs
- XmlBoundElement.cs
- TaskHelper.cs
- CommentAction.cs
- XmlTextAttribute.cs
- RegexGroup.cs
- SmiContext.cs
- ECDsa.cs
- ForeignKeyConstraint.cs
- XmlEntityReference.cs
- ServiceOperationInvoker.cs
- WebPartPersonalization.cs
- SchemeSettingElement.cs
- DurationConverter.cs
- CodeDirectiveCollection.cs
- SqlProvider.cs
- UnaryExpression.cs
- DataControlPagerLinkButton.cs
- validationstate.cs
- ISSmlParser.cs
- EngineSiteSapi.cs
- SQLInt16.cs
- AmbiguousMatchException.cs
- MimeObjectFactory.cs
- ConnectionStringSettingsCollection.cs
- WriteTimeStream.cs
- KeyProperty.cs
- ScrollViewer.cs
- SymbolMethod.cs
- HierarchicalDataBoundControl.cs
- ToolStripLabel.cs
- ToolStripActionList.cs
- LocalValueEnumerator.cs
- Pair.cs
- Column.cs
- NavigateEvent.cs