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 / VideoDrawing.cs / 1 / VideoDrawing.cs
//---------------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // Description: VideoDrawing represents a drawing operation that renders // video into a destination rectangle. // // History: // // 2004/11/17 : timothyc - Created it. // //--------------------------------------------------------------------------- using System.Diagnostics; namespace System.Windows.Media { ////// The class definition for VideoDrawing /// public sealed partial class VideoDrawing : Drawing { #region Constructors ////// Default VideoDrawing constructor. /// Constructs an object with all properties set to their default values /// public VideoDrawing() { } #endregion #region Internal methods ////// Calls methods on the DrawingContext that are equivalent to the /// Drawing with the Drawing's current value. /// internal override void WalkCurrentValue(DrawingContextWalker ctx) { // We avoid unneccessary ShouldStopWalking checks based on assumptions // about when ShouldStopWalking is set. Guard that assumption with an // assertion. See DrawingGroup.WalkCurrentValue comment for more details. Debug.Assert(!ctx.ShouldStopWalking); ctx.DrawVideo( Player, Rect ); } ////// Video drawings don't require realization updates. /// internal override void PrecomputeCore() { RequiresRealizationUpdates = false; } ////// Video drawings don't need realization updates. /// internal override void UpdateRealizations(RealizationContext realizationContext) { Debug.Assert(RequiresRealizationUpdates == false); } #endregion Internal methods } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // Description: VideoDrawing represents a drawing operation that renders // video into a destination rectangle. // // History: // // 2004/11/17 : timothyc - Created it. // //--------------------------------------------------------------------------- using System.Diagnostics; namespace System.Windows.Media { ////// The class definition for VideoDrawing /// public sealed partial class VideoDrawing : Drawing { #region Constructors ////// Default VideoDrawing constructor. /// Constructs an object with all properties set to their default values /// public VideoDrawing() { } #endregion #region Internal methods ////// Calls methods on the DrawingContext that are equivalent to the /// Drawing with the Drawing's current value. /// internal override void WalkCurrentValue(DrawingContextWalker ctx) { // We avoid unneccessary ShouldStopWalking checks based on assumptions // about when ShouldStopWalking is set. Guard that assumption with an // assertion. See DrawingGroup.WalkCurrentValue comment for more details. Debug.Assert(!ctx.ShouldStopWalking); ctx.DrawVideo( Player, Rect ); } ////// Video drawings don't require realization updates. /// internal override void PrecomputeCore() { RequiresRealizationUpdates = false; } ////// Video drawings don't need realization updates. /// internal override void UpdateRealizations(RealizationContext realizationContext) { Debug.Assert(RequiresRealizationUpdates == false); } #endregion Internal methods } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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