private static BitmapSource CreateElementScreenshot(UIElement uiElement)
{
bool measureValid = uiElement.IsMeasureValid;
if (!measureValid)
{
double width = 300;
double height = 300;
FrameworkElement frElement = uiElement as FrameworkElement;
if (frElement != null)
{
if (!Double.IsNaN(frElement.Width))
width = frElement.Width;
if (!Double.IsNaN(frElement.Height))
height = frElement.Height;
}
Size size = new Size(width, height);
uiElement.Measure(size);
uiElement.Arrange(new Rect(size));
}
RenderTargetBitmap bmp = new RenderTargetBitmap(
(int)uiElement.RenderSize.Width, (int)uiElement.RenderSize.Height,
96, 96, PixelFormats.Default);
// this is waiting for dispatcher to perform measure, arrange and render passes
uiElement.Dispatcher.Invoke(((Action)(() => { })), DispatcherPriority.Background);
bmp.Render(uiElement);
return bmp;
}
public static Cursor CreateCursor(UIElement element, int xHotSpot,
int yHotSpot)
{
element.Measure(new Size(double.PositiveInfinity,
double.PositiveInfinity));
element.Arrange(new Rect(0, 0, element.DesiredSize.Width,
element.DesiredSize.Height));
RenderTargetBitmap rtb =
new RenderTargetBitmap((int)element.DesiredSize.Width,
(int)element.DesiredSize.Height, 96, 96, PixelFormats.Pbgra32);
rtb.Render(element);
PngBitmapEncoder encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(rtb));
MemoryStream ms = new MemoryStream();
encoder.Save(ms);
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(ms);
ms.Close();
ms.Dispose();
Cursor cur = InternalCreateCursor(bmp, xHotSpot, yHotSpot);
bmp.Dispose();
return cur;
}
public static ImageSource ToImageSource(UIElement element, System.Windows.Size size)
{
element.Measure(size);
element.Arrange(new Rect(size));
var bmp = new RenderTargetBitmap((int)size.Width, (int)size.Height, 96, 96, PixelFormats.Pbgra32);
bmp.Render(element);
return bmp;
}
public static bool SaveElement(UIElement element, Tile tile)
{
try
{
var side = (tile == Tile.Small) ? 159 : 336;
element.Measure(new Size(side, side));
element.Arrange(new Rect(0, 0, side, side));
var bmp = new WriteableBitmap(side, side);
bmp.Render(element, null);
bmp.Invalidate();
var name = tile.ToString() + Guid.NewGuid() + ".png";
using (var isf = IsolatedStorageFile.GetUserStoreForApplication())
{
if (!isf.DirectoryExists("/CustomLiveTiles"))
{
isf.CreateDirectory("/CustomLiveTiles");
}
using (var myFileStream = isf.CreateFile("shared/shellcontent/" + name))
{
// Encode WriteableBitmap object to a PNG stream.
bmp.WritePng(myFileStream);
}
var filesTodelete =
from f in isf.GetFileNames("shared/shellcontent/" + tile + "*").AsQueryable()
where !f.EndsWith(name)
select f;
foreach (var file in filesTodelete)
{
isf.DeleteFile("shared/shellcontent/" + file);
}
}
SaveTilePart("isostore:/Shared/ShellContent/" + name, tile);
}
catch (Exception)
{
Thread.Sleep(1000);
if (tile == Tile.Small)
{
SaveTilePart(GetDefaultSmallTile(), tile);
}
else
{
SaveTilePart((tile == Tile.Front) ? GetDefaultFrontTile() : GetDefaultBackTile(), tile);
}
return false;
}
return true;
}
public static BitmapSource GenerateBitmapSource(UIElement element, double renderWidth, double renderHeight, bool performLayout)
{
if (performLayout)
{
element.Measure(new Size(renderWidth, renderHeight));
element.Arrange(new Rect(new Size(renderWidth, renderHeight)));
}
var bmp = new RenderTargetBitmap((int)renderWidth, (int)renderHeight, 96, 96, PixelFormats.Pbgra32);
var dv = new DrawingVisual();
using (DrawingContext dc = dv.RenderOpen())
{
dc.DrawRectangle(new VisualBrush(element), null, new Rect(0, 0, renderWidth, renderHeight));
}
bmp.Render(dv);
return bmp;
}
private static void RenderControlToBitmap(UIElement control, [NotNull] string path, int scale = 1,
double maxWidth = double.PositiveInfinity, double maxheight = double.PositiveInfinity)
{
var availableSize = new Size(maxWidth, maxheight);
control.Measure(availableSize);
var desiredSize = control.DesiredSize;
control.Arrange(new Rect(desiredSize));
var dpi = scale * 96;
var bmp = new RenderTargetBitmap((int)desiredSize.Width * scale, (int)desiredSize.Height * scale, dpi, dpi, PixelFormats.Pbgra32);
bmp.Render(control);
var encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(bmp));
var dir = Path.GetDirectoryName(path);
if (dir == null)
throw new InvalidPathException(path);
Directory.CreateDirectory(dir);
using (Stream stm = File.Create(path))
encoder.Save(stm);
}
public System.Windows.Size GetElementPixelSize(UIElement element)
{
Matrix transformToDevice;
var source = PresentationSource.FromVisual(element);
if (source != null)
{
transformToDevice = source.CompositionTarget.TransformToDevice;
}
else
{
using (var newSource = new HwndSource(new HwndSourceParameters()))
{
transformToDevice = newSource.CompositionTarget.TransformToDevice;
}
}
if (element.DesiredSize == new System.Windows.Size())
{
element.Measure(new System.Windows.Size(double.PositiveInfinity, double.PositiveInfinity));
}
return (System.Windows.Size)transformToDevice.Transform((Vector)element.DesiredSize);
}
public System.Windows.Size GetElementPixelSize(System.Windows.UIElement element)
{
Matrix transformToDevice;
var source = PresentationSource.FromVisual(element);
if (source != null)
{
transformToDevice = source.CompositionTarget.TransformToDevice;
}
else
{
using (var Hwndsource = new HwndSource(new HwndSourceParameters()))
{
transformToDevice = Hwndsource.CompositionTarget.TransformToDevice;
}
}
if (element.DesiredSize == new System.Windows.Size())
{
element.Measure(new System.Windows.Size(double.PositiveInfinity, double.PositiveInfinity));
}
return((System.Windows.Size)transformToDevice.Transform((Vector)element.DesiredSize));
}
private async Task ToImage(UIElement element, double width, double height)
{
element.Measure(new Size(width, height));
element.Arrange(new Rect { Height = height, Width = width });
element.UpdateLayout();
var bitmap = new WriteableBitmap((int)width, (int)height);
bitmap.Render(element, null);
bitmap.Invalidate();
await SaveTheImage(bitmap, WideTileUrl);
}
private async Task ToImage(UIElement element)
{
element.Measure(new Size(480, 800));
element.Arrange(new Rect{ Height = 800, Width = 480});
element.UpdateLayout();
var bitmap = new WriteableBitmap(480, 800);
bitmap.Render(element, null);
bitmap.Invalidate();
await SaveTheImage(bitmap);
}
/// <summary>
/// We initiate the layout on the tree rooted at the Visual to which VisualBrush points.
/// </summary>
private void DoLayout(UIElement element)
{
Debug.Assert(element != null);
DependencyObject parent = VisualTreeHelper.GetParent(element);
if (!(element.IsRootElement)
&& (parent == null || parent is Visual3D))
{
//
// PropagateResumeLayout sets the LayoutSuspended flag to false if it were true.
//
UIElement.PropagateResumeLayout(null, element);
element.Measure(new Size(Double.PositiveInfinity, Double.PositiveInfinity));
element.Arrange(new Rect(element.DesiredSize));
}
}
public static Cursor CreateCursor(UIElement element, int xHotSpot, int yHotSpot,bool isTransparent)
{
try
{
element.Measure(new Size(double.PositiveInfinity,
double.PositiveInfinity));
element.Arrange(new Rect(0, 0, element.DesiredSize.Width,
element.DesiredSize.Height));
RenderTargetBitmap rtb =
new RenderTargetBitmap((int)element.DesiredSize.Width,
(int)element.DesiredSize.Height, 96, 96,
PixelFormats.Pbgra32);
rtb.Render(element);
PngBitmapEncoder encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(rtb));
MemoryStream ms = new MemoryStream();
encoder.Save(ms);
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(ms);
if (isTransparent)
{
System.Drawing.Color backColor = bmp.GetPixel(1, 1);
bmp.MakeTransparent(backColor);
}
Cursor cur = InternalCreateCursor(bmp, xHotSpot, yHotSpot);
ms.Close();
ms.Dispose();
//VictorDEBUG
bmp.Dispose();
return cur;
}
catch
{
}
return null;
}
/// <summary>
/// Tells ContextLayoutManager to finalize possibly async update.
/// Used before accessing services off Visual.
/// </summary>
//[CodeAnalysis("AptcaMethodsShouldOnlyCallAptcaMethods")] //Tracking Bug: 29647
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, bug 1150880: not clear why this is needed, remove for now
//if the parent was just computed, the chidlren should be clean. If they are not clean and in the queue
//that means that there is cross-tree dependency and they most likely shodul be updated by themselves.
// MeasureQueue.RemoveOrphans(currentElement);
}
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, bug 1150880: not clear why this is needed, remove for now
//if the parent was just computed, the chidlren should be clean. If they are not clean and in the queue
//that means that there is cross-tree dependency and they most likely shodul be updated by themselves.
// ArrangeQueue.RemoveOrphans(currentElement);
}
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
}
public static Size MeasureDecoratorChild (UIElement child, Size constraint, double borderThickness)
{
if (child == null)
return Size.Empty;
child.Measure (GetMeasureSizeToPassToDecoratorChild (constraint, borderThickness));
return GetDesiredDecoratorSize (child.DesiredSize, borderThickness);
}
