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 / Media / Imaging / BitmapVisualManager.cs / 1 / BitmapVisualManager.cs
//------------------------------------------------------------------------------ // Microsoft Avalon // Copyright (c) Microsoft Corporation, 2003 // // File: BitmapVisualManager.cs // //----------------------------------------------------------------------------- using System; using System.Windows; using System.Threading; using System.Windows.Threading; using System.Diagnostics; using System.Collections; using System.Runtime.InteropServices; using System.IO; using MS.Internal; using System.Security; using System.Security.Permissions; using System.Windows.Media; using System.Windows.Media.Composition; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; using MS.Win32.PresentationCore; namespace System.Windows.Media.Imaging { #region public class BitmapVisualManager ////// BitmapVisualManager holds state and context for a drawing a visual to an bitmap. /// internal class BitmapVisualManager : DispatcherObject { #region Constructors private BitmapVisualManager() { } ////// Create an BitmapVisualManager for drawing a visual to the bitmap. /// /// Where the resulting bitmap is rendered public BitmapVisualManager(RenderTargetBitmap bitmapTarget) { if (bitmapTarget == null) { throw new ArgumentNullException("bitmapTarget"); } if (bitmapTarget.IsFrozen) { throw new ArgumentException(SR.Get(SRID.Image_CantBeFrozen, null)); } _bitmapTarget = bitmapTarget; } #endregion #region Public methods ////// Render visual to printer. /// /// Root of the visual to render public void Render(Visual visual) { Render(visual, Matrix.Identity, Rect.Empty, false); } ////// Render visual to printer. /// /// Root of the visual to render /// World transform to apply to the root visual /// The window clip of the outermost window or Empty /// True if we are rendering the visual /// to apply an effect to it /// ////// Critical - Deals with bitmap handles /// TreatAsSafe - validates all parameters, uses safe wrappers /// [SecurityCritical,SecurityTreatAsSafe] internal void Render(Visual visual, Matrix worldTransform, Rect windowClip, bool fRenderForBitmapEffect) { if (visual == null) { throw new ArgumentNullException("visual"); } // If the bitmapTarget we're writing to is frozen then we can't proceed. Note that // it's possible for the BitmapVisualManager to be constructed with a mutable BitmapImage // and for the app to later freeze it. Such an application is misbehaving if // they subsequently try to render to the BitmapImage. if (_bitmapTarget.IsFrozen) { throw new ArgumentException(SR.Get(SRID.Image_CantBeFrozen)); } int sizeX = _bitmapTarget.PixelWidth; int sizeY = _bitmapTarget.PixelHeight; double dpiX = _bitmapTarget.DpiX; double dpiY = _bitmapTarget.DpiY; Debug.Assert ((sizeX > 0) && (sizeY > 0)); Debug.Assert ((dpiX > 0) && (dpiY > 0)); // validate the data if ((sizeX <= 0) || (sizeY <= 0)) { return; // nothing to draw } if ((dpiX <= 0) || (dpiY <= 0)) { dpiX = 96; dpiY = 96; } SafeMILHandle renderTargetBitmap = _bitmapTarget.MILRenderTarget; Debug.Assert (renderTargetBitmap != null, "Render Target is null"); IntPtr pIRenderTargetBitmap = IntPtr.Zero; try { // // Allocate a fresh synchronous channel. // MediaContext mctx = MediaContext.CurrentMediaContext; DUCE.Channel channel = mctx.AllocateSyncChannel(); // // Acquire the target bitmap. // Guid iidRTB = MILGuidData.IID_IMILRenderTargetBitmap; HRESULT.Check(UnsafeNativeMethods.MILUnknown.QueryInterface( renderTargetBitmap, ref iidRTB, out pIRenderTargetBitmap)); // // Render the visual on the synchronous channel. // Renderer.Render( pIRenderTargetBitmap, channel, visual, sizeX, sizeY, dpiX, dpiY, worldTransform, windowClip, fRenderForBitmapEffect); // // Release the synchronous channel. This way we can // re-use that channel later. // mctx.ReleaseSyncChannel(channel); } finally { UnsafeNativeMethods.MILUnknown.ReleaseInterface(ref pIRenderTargetBitmap); } _bitmapTarget.RenderTargetContentsChanged(); } #endregion #region Member Variables private RenderTargetBitmap _bitmapTarget = null; #endregion } #endregion } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //------------------------------------------------------------------------------ // Microsoft Avalon // Copyright (c) Microsoft Corporation, 2003 // // File: BitmapVisualManager.cs // //----------------------------------------------------------------------------- using System; using System.Windows; using System.Threading; using System.Windows.Threading; using System.Diagnostics; using System.Collections; using System.Runtime.InteropServices; using System.IO; using MS.Internal; using System.Security; using System.Security.Permissions; using System.Windows.Media; using System.Windows.Media.Composition; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; using MS.Win32.PresentationCore; namespace System.Windows.Media.Imaging { #region public class BitmapVisualManager ////// BitmapVisualManager holds state and context for a drawing a visual to an bitmap. /// internal class BitmapVisualManager : DispatcherObject { #region Constructors private BitmapVisualManager() { } ////// Create an BitmapVisualManager for drawing a visual to the bitmap. /// /// Where the resulting bitmap is rendered public BitmapVisualManager(RenderTargetBitmap bitmapTarget) { if (bitmapTarget == null) { throw new ArgumentNullException("bitmapTarget"); } if (bitmapTarget.IsFrozen) { throw new ArgumentException(SR.Get(SRID.Image_CantBeFrozen, null)); } _bitmapTarget = bitmapTarget; } #endregion #region Public methods ////// Render visual to printer. /// /// Root of the visual to render public void Render(Visual visual) { Render(visual, Matrix.Identity, Rect.Empty, false); } ////// Render visual to printer. /// /// Root of the visual to render /// World transform to apply to the root visual /// The window clip of the outermost window or Empty /// True if we are rendering the visual /// to apply an effect to it /// ////// Critical - Deals with bitmap handles /// TreatAsSafe - validates all parameters, uses safe wrappers /// [SecurityCritical,SecurityTreatAsSafe] internal void Render(Visual visual, Matrix worldTransform, Rect windowClip, bool fRenderForBitmapEffect) { if (visual == null) { throw new ArgumentNullException("visual"); } // If the bitmapTarget we're writing to is frozen then we can't proceed. Note that // it's possible for the BitmapVisualManager to be constructed with a mutable BitmapImage // and for the app to later freeze it. Such an application is misbehaving if // they subsequently try to render to the BitmapImage. if (_bitmapTarget.IsFrozen) { throw new ArgumentException(SR.Get(SRID.Image_CantBeFrozen)); } int sizeX = _bitmapTarget.PixelWidth; int sizeY = _bitmapTarget.PixelHeight; double dpiX = _bitmapTarget.DpiX; double dpiY = _bitmapTarget.DpiY; Debug.Assert ((sizeX > 0) && (sizeY > 0)); Debug.Assert ((dpiX > 0) && (dpiY > 0)); // validate the data if ((sizeX <= 0) || (sizeY <= 0)) { return; // nothing to draw } if ((dpiX <= 0) || (dpiY <= 0)) { dpiX = 96; dpiY = 96; } SafeMILHandle renderTargetBitmap = _bitmapTarget.MILRenderTarget; Debug.Assert (renderTargetBitmap != null, "Render Target is null"); IntPtr pIRenderTargetBitmap = IntPtr.Zero; try { // // Allocate a fresh synchronous channel. // MediaContext mctx = MediaContext.CurrentMediaContext; DUCE.Channel channel = mctx.AllocateSyncChannel(); // // Acquire the target bitmap. // Guid iidRTB = MILGuidData.IID_IMILRenderTargetBitmap; HRESULT.Check(UnsafeNativeMethods.MILUnknown.QueryInterface( renderTargetBitmap, ref iidRTB, out pIRenderTargetBitmap)); // // Render the visual on the synchronous channel. // Renderer.Render( pIRenderTargetBitmap, channel, visual, sizeX, sizeY, dpiX, dpiY, worldTransform, windowClip, fRenderForBitmapEffect); // // Release the synchronous channel. This way we can // re-use that channel later. // mctx.ReleaseSyncChannel(channel); } finally { UnsafeNativeMethods.MILUnknown.ReleaseInterface(ref pIRenderTargetBitmap); } _bitmapTarget.RenderTargetContentsChanged(); } #endregion #region Member Variables private RenderTargetBitmap _bitmapTarget = null; #endregion } #endregion } // 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
- validationstate.cs
- Int64.cs
- CatalogZoneBase.cs
- DbDataSourceEnumerator.cs
- JournalEntryStack.cs
- DescendantOverDescendantQuery.cs
- ObjectListCommand.cs
- _BufferOffsetSize.cs
- PrintSchema.cs
- CopyCodeAction.cs
- TraceProvider.cs
- ColumnHeaderConverter.cs
- NamedPipeConnectionPoolSettings.cs
- mediaclock.cs
- HexParser.cs
- GroupItemAutomationPeer.cs
- OdbcConnectionString.cs
- HwndStylusInputProvider.cs
- CodeObjectCreateExpression.cs
- BasicExpandProvider.cs
- Memoizer.cs
- LocalizationParserHooks.cs
- InfoCardClaim.cs
- MessagingActivityHelper.cs
- WindowsRichEditRange.cs
- RowSpanVector.cs
- PagesChangedEventArgs.cs
- ApplicationDirectory.cs
- TableItemProviderWrapper.cs
- DecoderReplacementFallback.cs
- PixelFormats.cs
- CodeTypeMember.cs
- WindowsScrollBarBits.cs
- MsmqNonTransactedPoisonHandler.cs
- RoutingExtensionElement.cs
- RuleInfoComparer.cs
- WebPartZoneBaseDesigner.cs
- HeaderCollection.cs
- GZipStream.cs
- DataContext.cs
- XmlEnumAttribute.cs
- OleDbPermission.cs
- CommentEmitter.cs
- SmuggledIUnknown.cs
- LongCountAggregationOperator.cs
- MemberDomainMap.cs
- ObjectFactoryCodeDomTreeGenerator.cs
- ScriptingJsonSerializationSection.cs
- Visual.cs
- AutomationProperty.cs
- RichTextBoxAutomationPeer.cs
- ErrorStyle.cs
- CodeDelegateInvokeExpression.cs
- ObjectSet.cs
- CompositionTarget.cs
- bidPrivateBase.cs
- GlyphManager.cs
- MetafileEditor.cs
- FunctionMappingTranslator.cs
- WebPartVerb.cs
- EventOpcode.cs
- EventRouteFactory.cs
- XmlSchemaExternal.cs
- ListViewHitTestInfo.cs
- QuaternionKeyFrameCollection.cs
- DataGridViewAutoSizeModeEventArgs.cs
- XmlRawWriter.cs
- JsonObjectDataContract.cs
- ReferencedAssembly.cs
- HttpCacheParams.cs
- Int32Storage.cs
- ItemCollection.cs
- Rijndael.cs
- ItemChangedEventArgs.cs
- FamilyMapCollection.cs
- UnsafeNativeMethods.cs
- DetectEofStream.cs
- ConnectionInterfaceCollection.cs
- XPathDocumentNavigator.cs
- WebConfigManager.cs
- _KerberosClient.cs
- IsolatedStoragePermission.cs
- PropertyChangedEventArgs.cs
- TableChangeProcessor.cs
- HandlerFactoryWrapper.cs
- LogLogRecordEnumerator.cs
- ISSmlParser.cs
- AttributeUsageAttribute.cs
- AnnotationMap.cs
- SymbolDocumentGenerator.cs
- ReflectionPermission.cs
- RtfControls.cs
- AssertValidation.cs
- ColumnReorderedEventArgs.cs
- ToolStripContainer.cs
- EntityContainer.cs
- RunInstallerAttribute.cs
- DataGridItem.cs
- TextComposition.cs
- EntityTypeEmitter.cs