Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / Media / ImageBrush.cs / 1 / ImageBrush.cs
//---------------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // Description: This file contains the implementation of ImageBrush. // The ImageBrush is a TileBrush which defines its tile content // by use of an ImageSource. // // History: // // 04/29/2003 : [....] - Created it. // 01/19/2005 : [....] - Removed SizeViewboxToContent. Moved UpdateResource // to the generated file. //--------------------------------------------------------------------------- using MS.Internal; using MS.Internal.PresentationCore; using System; using System.ComponentModel; using System.ComponentModel.Design.Serialization; using System.Diagnostics; using System.Reflection; using System.Runtime.InteropServices; using System.Windows; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Media.Composition; using System.Windows.Media.Imaging; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows.Media { ////// ImageBrush - This TileBrush defines its content as an Image /// public sealed partial class ImageBrush : TileBrush { #region Constructors ////// Default constructor for ImageBrush. The resulting Brush has no content. /// public ImageBrush() { // We do this so that the property, when read, is consistent - not that // this will every actually affect drawing. } ////// ImageBrush Constructor where the image is set to the parameter's value /// /// The image source. public ImageBrush(ImageSource image) { ImageSource = image; } #endregion Constructors #region Protected methods ////// This node can introduce graphness /// internal override bool CanIntroduceGraphness() { if (ImageSource == null) { // If we don't have an ImageSource, we can't introduce // graphness right now, if we get an image source later // we'll precompute again. return false; } else { if (ImageSource.CanIntroduceGraphness()) { return true; } else { return false; } } } ////// Obtains the current bounds of the brush's content /// /// Output bounds of content protected override void GetContentBounds(out Rect contentBounds) { // Note, only implemented for DrawingImages. contentBounds = Rect.Empty; DrawingImage di = ImageSource as DrawingImage; if (di != null) { Drawing drawing = di.Drawing; if (drawing != null) { contentBounds = drawing.Bounds; } } } #endregion Protected methods #region Realization Support ////// Precompute is called during the frame preparation phase. Derived classes /// typically check if the brush requires realizations during this phase. /// internal override void Precompute() { ImageSource imageSource = ImageSource; if (imageSource != null) { imageSource.Precompute(); _requiresRealizationUpdates = imageSource.RequiresRealizationUpdates; } else { _requiresRealizationUpdates = false; } } ////// Checks if realization updates are required for this resource. /// internal override bool RequiresRealizationUpdates { get { return _requiresRealizationUpdates; } } ////// Derived classes must override this method and update realizations on dependent /// resources if required. /// internal override void UpdateRealizations(Rect fillShapeBounds, RealizationContext ctx) { if (_requiresRealizationUpdates) { Matrix m; ImageSource imageSource = ImageSource; Debug.Assert(imageSource != null); // Otherwise _requiresRealizationUpdates would be false. GetTileBrushMapping(fillShapeBounds, out m); ctx.TransformStack.Push(ref m, true); imageSource.UpdateRealizations(ctx); ctx.TransformStack.Pop(); } } #endregion private bool _requiresRealizationUpdates; } } // 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
- PanningMessageFilter.cs
- Size3D.cs
- Predicate.cs
- AbstractDataSvcMapFileLoader.cs
- Vector3dCollection.cs
- CounterSampleCalculator.cs
- PublishLicense.cs
- UnsafeMethods.cs
- LoginView.cs
- FontUnitConverter.cs
- CodeExporter.cs
- EventMappingSettingsCollection.cs
- XmlDocument.cs
- CodePageUtils.cs
- EntityModelBuildProvider.cs
- RangeValueProviderWrapper.cs
- StrongNamePublicKeyBlob.cs
- TransformedBitmap.cs
- RegexBoyerMoore.cs
- EntityDataSourceConfigureObjectContextPanel.cs
- StoryFragments.cs
- FormatVersion.cs
- XmlSchemaElement.cs
- StringCollection.cs
- TextTreeText.cs
- ZipIOLocalFileBlock.cs
- ConnectionStringsExpressionBuilder.cs
- CatalogPartChrome.cs
- RoutedEventHandlerInfo.cs
- codemethodreferenceexpression.cs
- RefType.cs
- ZoneLinkButton.cs
- ObjectManager.cs
- TimelineCollection.cs
- Privilege.cs
- RenderData.cs
- ToolStripComboBox.cs
- SerializationBinder.cs
- HtmlInputControl.cs
- _OSSOCK.cs
- BitmapEffectDrawing.cs
- ZipFileInfo.cs
- ZoneButton.cs
- IriParsingElement.cs
- DataGridViewDataErrorEventArgs.cs
- StartUpEventArgs.cs
- X509Utils.cs
- PermissionSetTriple.cs
- PropertyMap.cs
- XmlSchemaComplexContentRestriction.cs
- SafeIUnknown.cs
- CommonProperties.cs
- ExpressionBuilderContext.cs
- SQLBytes.cs
- SqlBuilder.cs
- SqlNode.cs
- WebPartMovingEventArgs.cs
- AssemblyAttributesGoHere.cs
- EntityContainerAssociationSet.cs
- sitestring.cs
- ImageIndexConverter.cs
- PersonalizationStateQuery.cs
- XsdCachingReader.cs
- LogicalExpressionEditor.cs
- TraceLog.cs
- Rotation3DAnimationBase.cs
- OptimizedTemplateContent.cs
- ConfigurationLockCollection.cs
- EndpointNotFoundException.cs
- NeedSkipTokenVisitor.cs
- TextChange.cs
- StorageEndPropertyMapping.cs
- ToolStripSplitButton.cs
- handlecollector.cs
- EntitySqlQueryCacheEntry.cs
- ConnectionStringsSection.cs
- Visual.cs
- TargetException.cs
- ReferentialConstraint.cs
- SplineKeyFrames.cs
- MultilineStringConverter.cs
- UndirectedGraph.cs
- MenuCommandsChangedEventArgs.cs
- AsymmetricSignatureFormatter.cs
- Gdiplus.cs
- DataGridViewCell.cs
- FrameworkContentElement.cs
- GlyphElement.cs
- DataGridRowAutomationPeer.cs
- SocketElement.cs
- TypeExtensionConverter.cs
- TdsRecordBufferSetter.cs
- DataGridViewCellParsingEventArgs.cs
- LightweightCodeGenerator.cs
- DataPager.cs
- AnimatedTypeHelpers.cs
- MbpInfo.cs
- PropertyChangingEventArgs.cs
- FormViewModeEventArgs.cs
- ClientTargetCollection.cs