void ShowResizerOverlayWindow(Resizer splitter)
{
Point ptTopLeftScreen = this.PointToScreenDPI(new Point());
_resizerGhost = new Border()
{
Background = Brushes.Black,
Opacity = 0.7
};
Size actualSize = this.TransformedActualSize();
if (Orientation == System.Windows.Controls.Orientation.Horizontal)
{
_resizerGhost.Width = 5.0;
_resizerGhost.Height = actualSize.Height;
}
else
{
_resizerGhost.Height = 5.0;
_resizerGhost.Width = actualSize.Width;
}
_initialStartPoint = splitter.PointToScreenDPI(new Point()) - this.PointToScreenDPI(new Point());
if (Orientation == System.Windows.Controls.Orientation.Horizontal)
{
Canvas.SetLeft(_resizerGhost, _initialStartPoint.X);
}
else
{
Canvas.SetTop(_resizerGhost, _initialStartPoint.Y);
}
Canvas panelHostResizer = new Canvas()
{
HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch,
VerticalAlignment = System.Windows.VerticalAlignment.Stretch
};
panelHostResizer.Children.Add(_resizerGhost);
_resizerWindowHost = new Window()
{
ResizeMode = ResizeMode.NoResize,
WindowStyle = System.Windows.WindowStyle.None,
ShowInTaskbar = false,
AllowsTransparency = true,
Background = null,
Width = actualSize.Width,
Height = actualSize.Height,
Left = ptTopLeftScreen.X,
Top = ptTopLeftScreen.Y,
ShowActivated = false,
Owner = Window.GetWindow(this),
Content = panelHostResizer
//,
//LayoutTransform = (MatrixTransform)this.TansformToAncestor()
};
_resizerWindowHost.Show();
}
void SetupSplitters()
{
if (!splitterListIsDirty)
return;
if (setupSplitters)
return;
setupSplitters = true;
while (_splitterList.Count > 0)
{
Resizer splitter = _splitterList[0];
splitter.DragStarted -= new DragStartedEventHandler(splitter_DragStarted);
splitter.DragDelta -= new DragDeltaEventHandler(splitter_DragDelta);
splitter.DragCompleted -= new DragCompletedEventHandler(splitter_DragCompleted);
_splitterList.Remove(splitter);
Children.Remove(splitter);
}
int i = 0;//child index
int j = 0;//splitter index
while (i < Children.Count - 1)
{
if (j == _splitterList.Count)
{
Resizer splitter = new Resizer();
splitter.Cursor = this.Orientation == Orientation.Horizontal ? Cursors.SizeWE : Cursors.SizeNS;
_splitterList.Add(splitter);
splitter.DragStarted += new DragStartedEventHandler(splitter_DragStarted);
splitter.DragDelta += new DragDeltaEventHandler(splitter_DragDelta);
splitter.DragCompleted += new DragCompletedEventHandler(splitter_DragCompleted);
Children.Insert(i + 1, splitter);
}
i += 2;
j++;
}
for (j = 0; j < _splitterList.Count; j++)
{
_splitterList[j].Width = (Orientation == Orientation.Horizontal) ? 6 : double.NaN;
_splitterList[j].Height = (Orientation == Orientation.Vertical) ? 6 : double.NaN;
}
#if DEBUG
Debug.Assert(_splitterList.Count == Children.Count / 2);
i = 0;
while (Children.Count > 0)
{
Debug.Assert(Children[i] != null);
Debug.Assert(!(Children[i] is Resizer));
i++;
if (i >= Children.Count)
break;
Debug.Assert((Children[i] is Resizer));
i++;
}
#endif
splitterListIsDirty = false;
setupSplitters = false;
}