protected override void OnPreviewMouseLeftButtonUp(MouseButtonEventArgs e)
{
if (_textBox == null || (string.IsNullOrEmpty(_textBox.SelectedText) &&
_textBox.GetCharacterIndexFromPoint(e.GetPosition(_textBox), false) > -1))
{
RoutedEventArgs args = new RoutedEventArgs(ClickedEvent, this);
Dispatcher.BeginInvoke(new Action(() =>
{
RaiseEvent(args);
}), DispatcherPriority.ContextIdle);
}
base.OnPreviewMouseLeftButtonUp(e);
}
private static bool PlaceCaretOnTextBox(TextBox textBox, Point position)
{
int characterIndexFromPoint = textBox.GetCharacterIndexFromPoint(position, false);
if (characterIndexFromPoint >= 0)
{
textBox.Select(characterIndexFromPoint, 0);
return true;
}
return false;
}
// Token: 0x060049BB RID: 18875 RVA: 0x0014D824 File Offset: 0x0014BA24
private static bool PlaceCaretOnTextBox(TextBox textBox, Point position)
{
int characterIndexFromPoint = textBox.GetCharacterIndexFromPoint(position, false);
if (characterIndexFromPoint >= 0)
{
textBox.Select(characterIndexFromPoint, 0);
return(true);
}
return(false);
}
private static int GetCaretIndexFromPoint(TextBox textBox, Point point)
{
var index = textBox.GetCharacterIndexFromPoint(point, true);
if (index != textBox.Text.Length - 1)
return index;
var caretRect = textBox.GetRectFromCharacterIndex(index);
var caretPoint = new Point(caretRect.X, caretRect.Y);
if (point.X > caretPoint.X)
index += 1;
return index;
}
// This method is to workaround the fact that textbox.GetCharacterIndexFromPoint returns the caret
// to the left of the character... Thus you can never get the caret after the last character in the
// expression string.
int GetCharacterIndexFromPoint(TextBox textbox)
{
Point position = Mouse.GetPosition(textbox);
int index = textbox.GetCharacterIndexFromPoint(position, false);
if (index < 0)
{
// May have clicked outside the text area, get the index of nearest char
index = textbox.GetCharacterIndexFromPoint(position, true);
if (index < 0)
{
index = 0;
}
// Adjust the cursor position if we clicked to the right of returned character
Rect charRect = textbox.GetRectFromCharacterIndex(index, true);
if (position.X > charRect.Left + charRect.Width / 2)
{
index++;
}
}
return index;
}
