public static object Load(System.Xaml.XamlReader reader)
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
object root = null;
try
{
root = Load(reader, null);
}
catch (Exception e)
{
IUriContext uriContext = reader as IUriContext;
Uri baseUri = (uriContext != null) ? uriContext.BaseUri : null;
// Don't wrap critical exceptions or already-wrapped exceptions.
if (MS.Internal.CriticalExceptions.IsCriticalException(e) || !ShouldReWrapException(e, baseUri))
{
throw;
}
RewrapException(e, baseUri);
}
finally
{
if (TraceMarkup.IsEnabled)
{
TraceMarkup.Trace(TraceEventType.Stop, TraceMarkup.Load, root);
}
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordXamlBaml, EventTrace.Event.WClientParseXmlEnd);
#if DEBUG_CLR_MEM
if (clrTracingEnabled && (CLRProfilerControl.CLRLoggingLevel >= CLRProfilerControl.CLRLogState.Performance))
{
CLRProfilerControl.CLRLogWriteLine("End_XamlParse_{0}", pass);
}
#endif // DEBUG_CLR_MEM
}
return(root);
}
//[CodeAnalysis("AptcaMethodsShouldOnlyCallAptcaMethods")] //Tracking Bug: 29647
internal static object LoadBaml(
Stream stream,
ParserContext parserContext,
object parent,
bool closeStream)
{
object root = null;
#if DEBUG_CLR_MEM
bool clrTracingEnabled = false;
// Use local pass variable to correctly log nested parses.
int pass = 0;
if (CLRProfilerControl.ProcessIsUnderCLRProfiler &&
(CLRProfilerControl.CLRLoggingLevel >= CLRProfilerControl.CLRLogState.Performance))
{
clrTracingEnabled = true;
pass = ++_CLRBamlPass;
CLRProfilerControl.CLRLogWriteLine("Begin_BamlParse_{0}", pass);
}
#endif // DEBUG_CLR_MEM
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordXamlBaml | EventTrace.Keyword.KeywordPerf, EventTrace.Event.WClientParseBamlBegin, parserContext.BaseUri);
if (TraceMarkup.IsEnabled)
{
TraceMarkup.Trace(TraceEventType.Start, TraceMarkup.Load);
}
try
{
//
// If the stream contains info about the Assembly that created it,
// set StreamCreatedAssembly from the stream instance.
//
IStreamInfo streamInfo = stream as IStreamInfo;
if (streamInfo != null)
{
parserContext.StreamCreatedAssembly = streamInfo.Assembly;
}
Baml2006ReaderSettings readerSettings = XamlReader.CreateBamlReaderSettings();
readerSettings.BaseUri = parserContext.BaseUri;
readerSettings.LocalAssembly = streamInfo.Assembly;
// We do not set OwnsStream = true so the Baml2006Reader will not close the stream.
// Calling code is responsible for disposing the stream
if (readerSettings.BaseUri == null || String.IsNullOrEmpty(readerSettings.BaseUri.ToString()))
{
readerSettings.BaseUri = BaseUriHelper.PackAppBaseUri;
}
var reader = new Baml2006ReaderInternal(stream, new Baml2006SchemaContext(readerSettings.LocalAssembly), readerSettings, parent);
// We don't actually use the GeneratedInternalTypeHelper any more.
// But for v3 compat, don't allow loading of internals in PT unless there is one.
Type internalTypeHelper = null;
if (streamInfo.Assembly != null)
{
try
{
internalTypeHelper = XamlTypeMapper.GetInternalTypeHelperTypeFromAssembly(parserContext);
}
// This can perform attribute reflection which will fail if the assembly has unresolvable
// attributes. If that happens, just assume there is no helper.
catch (Exception e)
{
if (MS.Internal.CriticalExceptions.IsCriticalException(e))
{
throw;
}
}
}
if (internalTypeHelper != null)
{
XamlAccessLevel accessLevel = XamlAccessLevel.AssemblyAccessTo(streamInfo.Assembly);
XamlLoadPermission loadPermission = new XamlLoadPermission(accessLevel);
loadPermission.Assert();
try
{
root = WpfXamlLoader.LoadBaml(reader, parserContext.SkipJournaledProperties, parent, accessLevel, parserContext.BaseUri);
}
finally
{
CodeAccessPermission.RevertAssert();
}
}
else
{
root = WpfXamlLoader.LoadBaml(reader, parserContext.SkipJournaledProperties, parent, null, parserContext.BaseUri);
}
DependencyObject dObject = root as DependencyObject;
if (dObject != null)
{
dObject.SetValue(BaseUriHelper.BaseUriProperty, readerSettings.BaseUri);
}
Application app = root as Application;
if (app != null)
{
app.ApplicationMarkupBaseUri = GetBaseUri(readerSettings.BaseUri);
}
Debug.Assert(parent == null || root == parent);
}
finally
{
if (TraceMarkup.IsEnabled)
{
TraceMarkup.Trace(TraceEventType.Stop, TraceMarkup.Load, root);
}
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordXamlBaml | EventTrace.Keyword.KeywordPerf, EventTrace.Event.WClientParseBamlEnd, parserContext.BaseUri);
if (closeStream && stream != null)
{
stream.Close();
}
#if DEBUG_CLR_MEM
if (clrTracingEnabled && (CLRProfilerControl.CLRLoggingLevel >= CLRProfilerControl.CLRLogState.Performance))
{
CLRProfilerControl.CLRLogWriteLine("End_BamlParse_{0}", pass);
}
#endif // DEBUG_CLR_MEM
}
return(root);
}
/// <summary>
/// Render method renders the visual tree.
/// </summary>
void ICompositionTarget.Render(bool inResize, DUCE.Channel channel)
{
#if DEBUG_CLR_MEM
bool clrTracingEnabled = false;
if (CLRProfilerControl.ProcessIsUnderCLRProfiler &&
(CLRProfilerControl.CLRLoggingLevel >= CLRProfilerControl.CLRLogState.Performance))
{
clrTracingEnabled = true;
++_renderCLRPass;
CLRProfilerControl.CLRLogWriteLine("Begin_FullRender_{0}", _renderCLRPass);
}
#endif // DEBUG_CLR_MEM
//
// Now we render the scene
//
#if MEDIA_PERFORMANCE_COUNTERS
_frameRateTimer.Begin();
#endif
if (_rootVisual.Value != null)
{
bool etwTracingEnabled = false;
if (EventTrace.IsEnabled(EventTrace.Keyword.KeywordGeneral | EventTrace.Keyword.KeywordPerf, EventTrace.Level.Info))
{
etwTracingEnabled = true;
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientPrecomputeSceneBegin, EventTrace.Keyword.KeywordGraphics | EventTrace.Keyword.KeywordPerf, EventTrace.Level.Info, PerfService.GetPerfElementID(this));
}
#if MEDIA_PERFORMANCE_COUNTERS
_precomputeRateTimer.Begin();
#endif
// precompute is channel agnostic
_rootVisual.Value.Precompute();
#if MEDIA_PERFORMANCE_COUNTERS
_precomputeRateTimer.End();
#endif
if (etwTracingEnabled)
{
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientPrecomputeSceneEnd, EventTrace.Keyword.KeywordGraphics | EventTrace.Keyword.KeywordPerf, EventTrace.Level.Info);
}
#if DEBUG
MediaTrace.RenderPass.Trace("Full Update");
#endif
if (etwTracingEnabled)
{
EventTrace.EventProvider.TraceEvent(
EventTrace.Event.WClientCompileSceneBegin, EventTrace.Keyword.KeywordGraphics | EventTrace.Keyword.KeywordPerf, EventTrace.Level.Info, PerfService.GetPerfElementID(this));
}
#if MEDIA_PERFORMANCE_COUNTERS
_renderRateTimer.Begin();
#endif
Compile(channel);
#if MEDIA_PERFORMANCE_COUNTERS
_renderRateTimer.End();
#endif
if (etwTracingEnabled)
{
EventTrace.EventProvider.TraceEvent(
EventTrace.Event.WClientCompileSceneEnd, EventTrace.Keyword.KeywordGraphics | EventTrace.Keyword.KeywordPerf, EventTrace.Level.Info);
}
}
#if DEBUG_CLR_MEM
if (clrTracingEnabled &&
CLRProfilerControl.CLRLoggingLevel >= CLRProfilerControl.CLRLogState.Performance)
{
CLRProfilerControl.CLRLogWriteLine("End_FullRender_{0}", _renderCLRPass);
}
#endif // DEBUG_CLR_MEM
#if MEDIA_PERFORMANCE_COUNTERS
_frameRateTimer.End();
System.Console.WriteLine("RENDERING PERFORMANCE DATA");
System.Console.WriteLine("Frame rendering time: " + _frameRateTimer.TimeOfLastPeriod + "ms");
System.Console.WriteLine("Frame precompute time: " + _precomputeRateTimer.TimeOfLastPeriod + "ms");
System.Console.WriteLine("Frame render time: " + _renderRateTimer.TimeOfLastPeriod + "ms");
#endif
}
/// <summary>
/// Reads XAML from the passed stream, building an object tree and returning the
/// root of that tree. Wrap a CompatibilityReader with another XmlReader that
/// uses the passed reader settings to allow validation of xaml.
/// </summary>
/// <param name="reader">XmlReader to use. This is NOT wrapped by any
/// other reader</param>
/// <param name="context">Optional parser context. May be null </param>
/// <param name="parseMode">Sets synchronous or asynchronous parsing</param>
/// <returns>object root generated after xml parsed</returns>
// Note this is the internal entry point for XPS. XPS calls here so
// its reader is not wrapped with a Markup Compat Reader.
internal static object Load(
XmlReader reader,
ParserContext parserContext,
XamlParseMode parseMode)
{
if (parseMode == XamlParseMode.Uninitialized ||
parseMode == XamlParseMode.Asynchronous)
{
XamlReader xamlReader = new XamlReader();
return(xamlReader.LoadAsync(reader, parserContext));
}
if (parserContext == null)
{
parserContext = new ParserContext();
}
#if DEBUG_CLR_MEM
bool clrTracingEnabled = false;
// Use local pass variable to correctly log nested parses.
int pass = 0;
if (CLRProfilerControl.ProcessIsUnderCLRProfiler &&
(CLRProfilerControl.CLRLoggingLevel >= CLRProfilerControl.CLRLogState.Performance))
{
clrTracingEnabled = true;
pass = ++_CLRXamlPass;
CLRProfilerControl.CLRLogWriteLine("Begin_XamlParse_{0}", pass);
}
#endif // DEBUG_CLR_MEM
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordXamlBaml, EventTrace.Event.WClientParseXmlBegin, parserContext.BaseUri);
if (TraceMarkup.IsEnabled)
{
TraceMarkup.Trace(TraceEventType.Start, TraceMarkup.Load);
}
object root = null;
try
{
if (parserContext.BaseUri == null ||
String.IsNullOrEmpty(parserContext.BaseUri.ToString()))
{
if (reader.BaseURI == null ||
String.IsNullOrEmpty(reader.BaseURI.ToString()))
{
parserContext.BaseUri = BaseUriHelper.PackAppBaseUri;
}
else
{
parserContext.BaseUri = new Uri(reader.BaseURI);
}
}
System.Xaml.XamlXmlReaderSettings settings = new System.Xaml.XamlXmlReaderSettings();
settings.IgnoreUidsOnPropertyElements = true;
settings.BaseUri = parserContext.BaseUri;
settings.ProvideLineInfo = true;
XamlSchemaContext schemaContext = parserContext.XamlTypeMapper != null ?
parserContext.XamlTypeMapper.SchemaContext : GetWpfSchemaContext();
System.Xaml.XamlXmlReader xamlXmlReader = new System.Xaml.XamlXmlReader(reader, schemaContext, settings);
root = Load(xamlXmlReader, parserContext);
reader.Close();
}
catch (Exception e)
{
// Don't wrap critical exceptions or already-wrapped exceptions.
if (MS.Internal.CriticalExceptions.IsCriticalException(e) || !ShouldReWrapException(e, parserContext.BaseUri))
{
throw;
}
RewrapException(e, parserContext.BaseUri);
}
finally
{
if (TraceMarkup.IsEnabled)
{
TraceMarkup.Trace(TraceEventType.Stop, TraceMarkup.Load, root);
}
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordXamlBaml, EventTrace.Event.WClientParseXmlEnd, parserContext.BaseUri);
#if DEBUG_CLR_MEM
if (clrTracingEnabled && (CLRProfilerControl.CLRLoggingLevel >= CLRProfilerControl.CLRLogState.Performance))
{
CLRProfilerControl.CLRLogWriteLine("End_XamlParse_{0}", pass);
}
#endif // DEBUG_CLR_MEM
}
return(root);
}
/// <summary>
/// Tells ContextLayoutManager to finalize possibly async update.
/// Used before accessing services off Visual.
/// </summary>
//[CodeAnalysis("AptcaMethodsShouldOnlyCallAptcaMethods")] //Tracking
internal void UpdateLayout()
{
VerifyAccess();
//make UpdateLayout to be a NOP if called during UpdateLayout.
if (_isInUpdateLayout ||
_measuresOnStack > 0 ||
_arrangesOnStack > 0 ||
_isDead)
{
return;
}
#if DEBUG_CLR_MEM
bool clrTracingEnabled = false;
// Start over with the Measure and arrange counters for this layout pass
int measureCLRPass = 0;
int arrangeCLRPass = 0;
if (CLRProfilerControl.ProcessIsUnderCLRProfiler)
{
clrTracingEnabled = true;
if (CLRProfilerControl.CLRLoggingLevel >= CLRProfilerControl.CLRLogState.Performance)
{
++_layoutCLRPass;
CLRProfilerControl.CLRLogWriteLine("Begin_Layout_{0}", _layoutCLRPass);
}
}
#endif // DEBUG_CLR_MEM
bool etwTracingEnabled = false;
long perfElementID = 0;
const EventTrace.Keyword etwKeywords = EventTrace.Keyword.KeywordLayout | EventTrace.Keyword.KeywordPerf;
if (!_isUpdating && EventTrace.IsEnabled(etwKeywords, EventTrace.Level.Info))
{
etwTracingEnabled = true;
perfElementID = PerfService.GetPerfElementID(this);
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientLayoutBegin, etwKeywords, EventTrace.Level.Info,
perfElementID, EventTrace.LayoutSource.LayoutManager);
}
int cnt = 0;
bool gotException = true;
UIElement currentElement = null;
try
{
invalidateTreeIfRecovering();
while (hasDirtiness || _firePostLayoutEvents)
{
if (++cnt > 153)
{
//loop detected. Lets go over to background to let input/user to correct the situation.
//most frequently, we get such a loop as a result of input detecting a mouse in the "bad spot"
//and some event handler oscillating a layout-affecting property depending on hittest result
//of the mouse. Going over to background will not break the loopp but will allow user to
//move the mouse so that it goes out of the "bad spot".
Dispatcher.BeginInvoke(DispatcherPriority.Background, _updateLayoutBackground, this);
currentElement = null;
gotException = false;
if (etwTracingEnabled)
{
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientLayoutAbort, etwKeywords, EventTrace.Level.Info, 0, cnt);
}
return;
}
//this flag stops posting update requests to MediaContext - we are already in one
//note that _isInUpdateLayout is close but different - _isInUpdateLayout is reset
//before firing LayoutUpdated so that event handlers could call UpdateLayout but
//still could not cause posting of MediaContext work item. Posting MediaContext workitem
//causes infinite loop in MediaContext.
_isUpdating = true;
_isInUpdateLayout = true;
#if DEBUG_CLR_MEM
if (clrTracingEnabled && (CLRProfilerControl.CLRLoggingLevel >= CLRProfilerControl.CLRLogState.Verbose))
{
++measureCLRPass;
CLRProfilerControl.CLRLogWriteLine("Begin_Measure_{0}_{1}", _layoutCLRPass, measureCLRPass);
}
#endif // DEBUG_CLR_MEM
if (etwTracingEnabled)
{
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientMeasureBegin, etwKeywords, EventTrace.Level.Info, perfElementID);
}
// Disable processing of the queue during blocking operations to prevent unrelated reentrancy.
using (Dispatcher.DisableProcessing())
{
//loop for Measure
//We limit the number of loops here by time - normally, all layout
//calculations should be done by this time, this limit is here for
//emergency, "infinite loop" scenarios - yielding in this case will
//provide user with ability to continue to interact with the app, even though
//it will be sluggish. If we don't yield here, the loop is goign to be a deadly one
//and it will be impossible to save results or even close the window.
int loopCounter = 0;
DateTime loopStartTime = new DateTime(0);
while (true)
{
if (++loopCounter > 153)
{
loopCounter = 0;
//first bunch of iterations is free, then we start count time
//this way, we don't call DateTime.Now in most layout updates
if (loopStartTime.Ticks == 0)
{
loopStartTime = DateTime.UtcNow;
}
else
{
TimeSpan loopDuration = (DateTime.UtcNow - loopStartTime);
if (loopDuration.Milliseconds > 153 * 2) // 153*2 = magic*science
{
//loop detected. Lets go over to background to let input work.
Dispatcher.BeginInvoke(DispatcherPriority.Background, _updateLayoutBackground, this);
currentElement = null;
gotException = false;
if (etwTracingEnabled)
{
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientMeasureAbort, etwKeywords, EventTrace.Level.Info,
loopDuration.Milliseconds, loopCounter);
}
return;
}
}
}
currentElement = MeasureQueue.GetTopMost();
if (currentElement == null)
{
break; //exit if no more Measure candidates
}
currentElement.Measure(currentElement.PreviousConstraint);
//dmitryt,
}
if (etwTracingEnabled)
{
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientMeasureEnd, etwKeywords, EventTrace.Level.Info, loopCounter);
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientArrangeBegin, etwKeywords, EventTrace.Level.Info, perfElementID);
}
#if DEBUG_CLR_MEM
if (clrTracingEnabled && (CLRProfilerControl.CLRLoggingLevel >= CLRProfilerControl.CLRLogState.Verbose))
{
CLRProfilerControl.CLRLogWriteLine("End_Measure_{0}_{1}", _layoutCLRPass, measureCLRPass);
++arrangeCLRPass;
CLRProfilerControl.CLRLogWriteLine("Begin_Arrange_{0}_{1}", _layoutCLRPass, arrangeCLRPass);
}
#endif // DEBUG_CLR_MEM
//loop for Arrange
//if Arrange dirtied the tree go clean it again
//We limit the number of loops here by time - normally, all layout
//calculations should be done by this time, this limit is here for
//emergency, "infinite loop" scenarios - yielding in this case will
//provide user with ability to continue to interact with the app, even though
//it will be sluggish. If we don't yield here, the loop is goign to be a deadly one
//and it will be impossible to save results or even close the window.
loopCounter = 0;
loopStartTime = new DateTime(0);
while (MeasureQueue.IsEmpty)
{
if (++loopCounter > 153)
{
loopCounter = 0;
//first bunch of iterations is free, then we start count time
//this way, we don't call DateTime.Now in most layout updates
if (loopStartTime.Ticks == 0)
{
loopStartTime = DateTime.UtcNow;
}
else
{
TimeSpan loopDuration = (DateTime.UtcNow - loopStartTime);
if (loopDuration.Milliseconds > 153 * 2) // 153*2 = magic*science
{
//loop detected. Lets go over to background to let input work.
Dispatcher.BeginInvoke(DispatcherPriority.Background, _updateLayoutBackground, this);
currentElement = null;
gotException = false;
if (etwTracingEnabled)
{
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientArrangeAbort, etwKeywords, EventTrace.Level.Info,
loopDuration.Milliseconds, loopCounter);
}
return;
}
}
}
currentElement = ArrangeQueue.GetTopMost();
if (currentElement == null)
{
break; //exit if no more Measure candidates
}
Rect finalRect = getProperArrangeRect(currentElement);
currentElement.Arrange(finalRect);
//dmitryt,
}
if (etwTracingEnabled)
{
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientArrangeEnd, etwKeywords, EventTrace.Level.Info, loopCounter);
}
#if DEBUG_CLR_MEM
if (clrTracingEnabled && (CLRProfilerControl.CLRLoggingLevel >= CLRProfilerControl.CLRLogState.Verbose))
{
CLRProfilerControl.CLRLogWriteLine("End_Arrange_{0}_{1}", _layoutCLRPass, arrangeCLRPass);
}
#endif // DEBUG_CLR_MEM
//if Arrange dirtied the tree go clean it again
//it is not neccesary to check ArrangeQueue sicnce we just exited from Arrange loop
if (!MeasureQueue.IsEmpty)
{
continue;
}
//let LayoutUpdated handlers to call UpdateLayout
//note that it means we can get reentrancy into UpdateLayout past this point,
//if any of event handlers call UpdateLayout sync. Need to protect from reentrancy
//in the firing methods below.
_isInUpdateLayout = false;
}
fireSizeChangedEvents();
if (hasDirtiness)
{
continue;
}
fireLayoutUpdateEvent();
if (hasDirtiness)
{
continue;
}
fireAutomationEvents();
if (hasDirtiness)
{
continue;
}
fireSizeChangedEvents(); // if nothing is dirty, one last chance for any size changes to announce.
}
currentElement = null;
gotException = false;
}
finally
{
_isUpdating = false;
_layoutRequestPosted = false;
_isInUpdateLayout = false;
if (gotException)
{
if (etwTracingEnabled)
{
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientLayoutException, etwKeywords, EventTrace.Level.Info, PerfService.GetPerfElementID(currentElement));
}
//set indicator
_gotException = true;
_forceLayoutElement = currentElement;
//make attempt to request the subsequent layout calc
//some exception handler schemas use Idle priorities to
//wait until dust settles. Then they correct the issue noted in the exception handler.
//We don't want to attempt to re-do the operation on the priority higher then that.
Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle, _updateLayoutBackground, this);
}
}
MS.Internal.Text.TextInterface.Font.ResetFontFaceCache();
MS.Internal.FontCache.BufferCache.Reset();
if (etwTracingEnabled)
{
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientLayoutEnd, etwKeywords, EventTrace.Level.Info);
}
#if DEBUG_CLR_MEM
if (clrTracingEnabled && (CLRProfilerControl.CLRLoggingLevel >= CLRProfilerControl.CLRLogState.Performance))
{
CLRProfilerControl.CLRLogWriteLine("End_Layout_{0}", _layoutCLRPass);
}
#endif // DEBUG_CLR_MEM
}