private void UpdateCompositionWindow()
{
string compositionString = ImeHelper.GetImmCompositionString(this.imeContext, 8);
this.textBoxControl.Select(this.startCaretIndex, this.previousCompString.Length);
this.textBoxControl.Insert(compositionString);
this.previousCompString = compositionString;
this.textBoxControl.Select(this.startCaretIndex, this.previousCompString.Length);
TextPosition positionFromOffset = this.textBoxControl.Navigator.GetPositionFromOffset(this.startCaretIndex);
TextPosition textPosition = this.textBoxControl.Navigator.GetPositionFromOffset(this.startCaretIndex + 1);
if ((object)textPosition == null)
{
textPosition = positionFromOffset;
}
TextPosition position = textPosition;
PointF location1 = this.textBoxControl.ViewElement.GetLocation(positionFromOffset);
PointF location2 = this.textBoxControl.ViewElement.GetLocation(position);
if ((double)location2.Y > (double)location1.Y)
{
location1.X = position.Line.Location.X;
location1.Y = location2.Y;
}
int num = this.textBoxControl.ViewElement.Lines.Count > 0 ? (int)this.textBoxControl.ViewElement.Lines[0].Location.Y - this.textBoxControl.ViewElement.ControlBoundingRectangle.Y : 0;
this.startCaretLocation = new Point((int)((double)location1.X + (double)this.textBoxControl.ViewElement.ScrollOffset.Width), (int)((double)location1.Y + (double)this.textBoxControl.ViewElement.ScrollOffset.Height) - num);
this.UpdateCompositionWindowLocation(this.startCaretLocation);
}
private void CloseIme()
{
if (!(this.imeContext != IntPtr.Zero))
{
return;
}
ImeHelper.NotifyCompositionStringCancel(this.imeContext);
}
private void UpdateCompositionWindowLocation(Point point)
{
if (!(this.imeContext != IntPtr.Zero))
{
return;
}
ImeHelper.SetCompositionWindow(this.imeContext, this.textBoxControl, point);
}
public static bool SetCompositionWindow(
IntPtr hIMC,
RadTextBoxControlElement caretTextBox,
Point point)
{
ImeHelper.SetCompositionFont(caretTextBox, hIMC);
return(IMENativeWrapper.ImmSetCompositionWindow(hIMC, ref new IMENativeWrapper.CompositionForm()
{
dwStyle = 32, ptCurrentPos = { x = Math.Max(0, point.X), y = Math.Max(0, point.Y) }
}));
}
private void ClearContext()
{
if (this.immSource == null)
{
return;
}
this.immSource.RemoveHook(new WndHookDelegate(this.WndProc));
ImeHelper.AssociateContext((NativeWindow)this.immSource, this.imeOldContext);
this.imeOldContext = IntPtr.Zero;
ImeHelper.ReleaseContext(this.imeDefaultWnd, this.imeContext);
this.immSource.Dispose();
this.immSource = (NativeWindowAdapter)null;
this.imeContext = IntPtr.Zero;
this.imeDefaultWnd = IntPtr.Zero;
}
private IntPtr WndProc(
IntPtr hWnd,
int msg,
IntPtr wParam,
IntPtr lParam,
ref bool handled,
ref bool defWndProc)
{
switch (msg)
{
case 269:
this.StartComposition();
break;
case 270:
this.EndComposition();
break;
case 271:
if (this.IsKorean())
{
if ((int)lParam == 2048)
{
handled = !this.imeActive;
this.shouldRepositionCaret = true;
this.textBoxControl.OnIMECompositionResult(ImeHelper.GetImmCompositionString(this.imeContext, 2048));
break;
}
if (this.shouldRepositionCaret)
{
this.shouldRepositionCaret = false;
this.startCaretIndex = this.textBoxControl.CaretIndex;
this.previousCompString = string.Empty;
this.startCaretLocation = new Point(this.textBoxControl.Caret.ControlBoundingRectangle.Left, this.textBoxControl.ViewElement.ControlBoundingRectangle.Top);
this.UpdateCompositionWindowLocation(this.startCaretLocation);
}
}
this.UpdateCompositionWindow();
break;
}
return(IntPtr.Zero);
}
private void CreateContext()
{
if (this.textBoxControl.ElementTree == null || this.textBoxControl.ElementTree.Control == null || (this.textBoxControl.IsDisposed || this.textBoxControl.ElementTree.Control.IsDisposed))
{
return;
}
if (this.immSource != null && this.immSource.Handle != this.textBoxControl.ElementTree.Control.Handle)
{
this.immSource.Dispose();
}
this.immSource = new NativeWindowAdapter(this.textBoxControl.ElementTree.Control.Handle);
if (this.immSource == null)
{
return;
}
this.imeDefaultWnd = ImeHelper.GetDefaultIMEWnd();
this.imeContext = ImeHelper.GetContext(this.imeDefaultWnd);
this.imeOldContext = ImeHelper.AssociateContext((NativeWindow)this.immSource, this.imeContext);
this.immSource.AddHook(new WndHookDelegate(this.WndProc));
ImeHelper.EnableImmComposition();
}
