protected override bool ProcessCmdKey(ref System.Windows.Forms.Message msg, System.Windows.Forms.Keys keyData)
{
if (IsChangeTracked)
{
if (ModifierKeys.HasFlag(Keys.Control))
{
if (keyData.HasFlag(Keys.Z))
{
if (ModifierKeys.HasFlag(Keys.Shift))
{
Redo();
}
else
{
Undo();
}
return(true);
}
else if (keyData.HasFlag(Keys.Y))
{
Redo();
return(true);
}
}
}
if (keyData.HasFlag(Keys.Enter) || keyData.HasFlag(Keys.Return))
{
ConfirmInput();
}
return(base.ProcessCmdKey(ref msg, keyData));
}
protected override bool ProcessDialogKey(System.Windows.Forms.Keys keyData)
{
if (keyData == Keys.Tab)
{
var FocusedElement = Keyboard.FocusedElement as UIElement;
if (FocusedElement != null)
{
DependencyObject DestinationElement = null;
FocusNavigationDirection Direction;
if (keyData.HasFlag(Keys.Shift))
{
Direction = FocusNavigationDirection.Last;
DestinationElement = GetPrevTab(FocusedElement, null, false);
}
else
{
Direction = FocusNavigationDirection.First;
DestinationElement = GetNextTab(FocusedElement, GetGroupParent(FocusedElement, true), false);
}
if (DestinationElement == null)
{
return(this.Sink.TabInto(new TraversalRequest(Direction)));
}
}
}
return(base.ProcessDialogKey(keyData));
}
/// <summary>
/// Returns WPF modifiers as <see cref="wpf.ModifierKeys"/> from Forms <see cref="forms.Keys"/>.
/// </summary>
/// <param name="mKeys">Forms <see cref="forms.Keys"/> which is about to converted to WPF <see cref="wpf.ModifierKeys"/>.</param>
public static wpf.ModifierKeys WpfModifiersFromFormsModifiers(forms.Keys mKeys)
{
wpf.ModifierKeys wKey = wpf.ModifierKeys.None;
if (mKeys.HasFlag(forms.Keys.Control))
{
wKey = wKey | wpf.ModifierKeys.Control;
}
if (mKeys.HasFlag(forms.Keys.Alt))
{
wKey = wKey | wpf.ModifierKeys.Alt;
}
if (mKeys.HasFlag(forms.Keys.Shift))
{
wKey = wKey | wpf.ModifierKeys.Shift;
}
return(wKey);
}
public override void OnMouseMove(PointF location, System.Windows.Forms.Keys keys, System.Windows.Forms.MouseButtons buttons)
{
base.OnMouseMove(location, keys, buttons);
if (mouseDown)
{
if (Type == SelectionType.FreeForm)
{
path.AddLine(mouseInit, location);
mouseInit = location;
}
else
{
path.Dispose();
path = new GraphicsPath();
var pos = new PointF(
Math.Min(mouseInit.X, location.X),
Math.Min(mouseInit.Y, location.Y)
);
var size = new SizeF(
Math.Abs(mouseInit.X - location.X),
Math.Abs(mouseInit.Y - location.Y)
);
if (keys.HasFlag(Keys.Shift))
{
var min = Math.Min(size.Width, size.Height);
if (location.X < mouseInit.X && size.Width > min)
{
pos.X += size.Width - min;
}
if (location.Y < mouseInit.Y && size.Height > min)
{
pos.Y += size.Height - min;
}
size = new SizeF(min, min);
}
switch (Type)
{
case SelectionType.Rectangle:
path.AddRectangle(new RectangleF(pos, size));
break;
case SelectionType.Ellipse:
path.AddEllipse(new RectangleF(pos, size));
break;
}
}
Invalidate();
}
}
protected override bool ProcessCmdKey(ref System.Windows.Forms.Message msg, System.Windows.Forms.Keys keyData)
{
//The problem addressed here had to do with tab wonkiness with MDI forms.
//When you tabbed forward through the inner WPF control to the end, the tab focus would jump out of the
//form and into the next control or MDI child window under the MDI form.
//As best I could tell, the tab logic was being confused by MDI.
//The solution used here is to reflect out methods on the KeyboardNavigation class
//to determine what the next/previous item would be in the tab order.
//(The exact parameters were gleaned by disassembling the private
//bool Navigate(DependencyObject currentElement, TraversalRequest request, ModifierKeys modifierKeys, DependencyObject firstElement)
//method on the KeyboardNavigation class.
//If the destination element is null, then the end of the tab order had been reached.
//Instead of relying on the base ProcessCmdKey, specifically tell the IKeyboardInputSink HwndSource
//to move to the beginning or end of the embedded WPF tab order.
if (keyData == Keys.Tab)
{
var FocusedElement = Keyboard.FocusedElement as UIElement;
if (FocusedElement != null)
{
DependencyObject DestinationElement = null;
FocusNavigationDirection Direction;
if (keyData.HasFlag(Keys.Shift))
{
Direction = FocusNavigationDirection.Last;
DestinationElement = GetPrevTab(FocusedElement, null, false);
}
else
{
Direction = FocusNavigationDirection.First;
DestinationElement = GetNextTab(FocusedElement, GetGroupParent(FocusedElement, true), false);
}
if (DestinationElement == null)
{
return(this.Sink.TabInto(new TraversalRequest(Direction)));
}
}
}
return(base.ProcessCmdKey(ref msg, keyData));
}
