private static bool UpdateSourceOfElement(DependencyObject doTarget,
DependencyObject doAncestor,
DependencyObject doOldParent)
{
bool calledOut = false;
PresentationSource realSource = FindSource(doTarget);
PresentationSource cachedSource = CriticalGetPresentationSourceFromElement(doTarget, CachedSourceProperty);
if (cachedSource != realSource)
{
doTarget.SetValue(CachedSourceProperty, new SecurityCriticalDataForMultipleGetAndSet <PresentationSource>(realSource));
SourceChangedEventArgs args = new SourceChangedEventArgs(cachedSource, realSource);
args.RoutedEvent = SourceChangedEvent;
if (InputElement.IsUIElement(doTarget))
{
((UIElement)doTarget).RaiseEvent(args);
}
else if (InputElement.IsContentElement(doTarget))
{
((ContentElement)doTarget).RaiseEvent(args);
}
else
{
((UIElement3D)doTarget).RaiseEvent(args);
}
calledOut = true;
}
return(calledOut);
}
protected override void OnSetSource (object source)
{
if (OnSetSourceCalled != null) {
SourceChangedEventArgs args = new SourceChangedEventArgs ();
args.SourceArg = source;
OnSetSourceCalled (this, args);
}
base.OnSetSource (source);
}
private void PresentationSourceChangedHandler(object sender, SourceChangedEventArgs args)
{
if (args.NewSource != null)
{
var newSource = (HwndSource)args.NewSource;
source = newSource;
if (source != null)
{
var notifyDpiChanged = !matrix.Equals(source.CompositionTarget.TransformToDevice);
matrix = source.CompositionTarget.TransformToDevice;
sourceHook = SourceHook;
source.AddHook(sourceHook);
if (notifyDpiChanged)
{
managedCefBrowserAdapter.NotifyScreenInfoChanged();
}
}
}
else if (args.OldSource != null)
{
RemoveSourceHook();
}
}
void OnSourceChanged(object sender, SourceChangedEventArgs e)
{
HwndSource oldSource = e.OldSource as HwndSource;
HwndSource newSource = e.NewSource as HwndSource;
if (oldSource != null)
{
oldSource.RemoveHook(SourceHook);
}
if (newSource != null)
{
newSource.AddHook(SourceHook);
}
}
private void OnSourceChanged(object sender, SourceChangedEventArgs e)
{
var oldSource = e.OldSource as HwndSource;
var newSource = e.NewSource as HwndSource;
if (oldSource != null)
oldSource.RemoveHook(new HwndSourceHook(this.SourceHook));
if (newSource != null)
newSource.AddHook(new HwndSourceHook(this.SourceHook));
}
private static bool UpdateSourceOfElement(DependencyObject doTarget,
DependencyObject doAncestor,
DependencyObject doOldParent)
{
bool calledOut = false;
PresentationSource realSource = FindSource(doTarget);
PresentationSource cachedSource = CriticalGetPresentationSourceFromElement(doTarget, CachedSourceProperty);
if (cachedSource != realSource)
{
doTarget.SetValue(CachedSourceProperty, new SecurityCriticalDataForMultipleGetAndSet<PresentationSource>(realSource));
SourceChangedEventArgs args = new SourceChangedEventArgs(cachedSource, realSource);
args.RoutedEvent=SourceChangedEvent;
if (InputElement.IsUIElement(doTarget))
{
((UIElement)doTarget).RaiseEvent(args);
}
else if (InputElement.IsContentElement(doTarget))
{
((ContentElement)doTarget).RaiseEvent(args);
}
else
{
((UIElement3D)doTarget).RaiseEvent(args);
}
calledOut = true;
}
return calledOut;
}
private void OnPresentationSourceChanged(object sender, SourceChangedEventArgs args)
{
if (args.NewSource == null)
{
this.DisconnectFromPresentationSource();
}
else
{
this.ConnectToPresentationSource(args.NewSource);
}
}
private void PresentationSourceChangedHandler(object sender, SourceChangedEventArgs args)
{
if (args.NewSource != null)
{
var newSource = (HwndSource)args.NewSource;
source = newSource;
if (source != null)
{
matrix = source.CompositionTarget.TransformToDevice;
sourceHook = SourceHook;
source.AddHook(sourceHook);
}
}
else if (args.OldSource != null)
{
if (source != null && sourceHook != null)
{
source.RemoveHook(sourceHook);
source = null;
}
}
}
private static void PresenationSourceChangedHandler(object sender, SourceChangedEventArgs sourceChangedEventArgs)
{
var src = sourceChangedEventArgs.NewSource as HwndSource;
if (src != null)
{
EnableMouseHorizontalWheelSupport(src.Handle);
}
}
private void OnSourceChanged(object sender, SourceChangedEventArgs args)
{
var hwndSource = args.OldSource as HwndSource;
if (hwndSource != null)
{
OnSourceDisconnected(hwndSource);
}
hwndSource = args.NewSource as HwndSource;
if (hwndSource != null)
{
OnSourceConnected(hwndSource);
}
}
// This method handles the situation where the PresentationSource that
// contains this OldSchoolMdiChild instance changes. This will happen
// the first time, and possibly if someone programatically removes it
// and inserts it somewhere else.
private void OnPresentationSourceChanged(object sender, SourceChangedEventArgs e)
{
// Destroy our PresentationSource children when we are disconnected.
if (e.OldSource != null)
{
if (_hwndSourceChild != null && !_hwndSourceChild.IsDisposed)
{
_hwndSourceChild.RootVisual = null;
_hwndSourceChild.Dispose();
_hwndSourceChild = null;
}
}
// Create our PresentationSource children when we are connected.
HwndSource newSource = e.NewSource as HwndSource;
if (newSource != null)
{
var p = new HwndSourceParameters("MiddleChild", 200, 100);
p.WindowClassStyle = 0;
p.WindowStyle = WS_OVERLAPPEDWINDOW | WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
p.ExtendedWindowStyle = 0;
p.ParentWindow = newSource.Handle;
p.HwndSourceHook = ChildHook;
_hwndSourceChild = new HwndSource(p);
_hwndSourceChild.RootVisual = Child;
// Show the window for the first time normally.
ShowWindow(_hwndSourceChild.Handle, SW_SHOWNORMAL); // First time
SetWindowPos(_hwndSourceChild.Handle, IntPtr.Zero, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED);
}
}