void CreateSplitters()
{
for (int iChild = 1; iChild < Children.Count; iChild++)
{
var splitter = new LayoutGridResizerControl();
splitter.Cursor = this.Orientation == Orientation.Horizontal ? Cursors.SizeWE : Cursors.SizeNS;
Children.Insert(iChild, splitter);
iChild++;
}
}
void OnSplitterDragDelta(object sender, System.Windows.Controls.Primitives.DragDeltaEventArgs e)
{
LayoutGridResizerControl splitter = sender as LayoutGridResizerControl;
var rootVisual = this.FindVisualTreeRoot() as Visual;
var trToWnd = TransformToAncestor(rootVisual);
Vector transformedDelta = trToWnd.Transform(new Point(e.HorizontalChange, e.VerticalChange)) -
trToWnd.Transform(new Point());
if (Orientation == System.Windows.Controls.Orientation.Horizontal)
{
Canvas.SetLeft(_resizerGhost, MathHelper.MinMax(_initialStartPoint.X + transformedDelta.X, 0.0, _resizerWindowHost.Width - _resizerGhost.Width));
}
else
{
Canvas.SetTop(_resizerGhost, MathHelper.MinMax(_initialStartPoint.Y + transformedDelta.Y, 0.0, _resizerWindowHost.Height - _resizerGhost.Height));
}
}
void OnResizerDragDelta(object sender, System.Windows.Controls.Primitives.DragDeltaEventArgs e)
{
LayoutGridResizerControl splitter = sender as LayoutGridResizerControl;
var rootVisual = this.FindVisualTreeRoot() as Visual;
var trToWnd = TransformToAncestor(rootVisual);
Vector transformedDelta = trToWnd.Transform(new Point(e.HorizontalChange, e.VerticalChange)) -
trToWnd.Transform(new Point());
if (_side == AnchorSide.Right || _side == AnchorSide.Left)
{
if (FrameworkElement.GetFlowDirection(_internalHost) == System.Windows.FlowDirection.RightToLeft)
{
transformedDelta.X = -transformedDelta.X;
}
Canvas.SetLeft(_resizerGhost, MathHelper.MinMax(_initialStartPoint.X + transformedDelta.X, 0.0, _resizerWindowHost.Width - _resizerGhost.Width));
}
else
{
Canvas.SetTop(_resizerGhost, MathHelper.MinMax(_initialStartPoint.Y + transformedDelta.Y, 0.0, _resizerWindowHost.Height - _resizerGhost.Height));
}
}
void OnResizerDragCompleted(object sender, System.Windows.Controls.Primitives.DragCompletedEventArgs e)
{
LayoutGridResizerControl splitter = sender as LayoutGridResizerControl;
var rootVisual = this.FindVisualTreeRoot() as Visual;
var trToWnd = TransformToAncestor(rootVisual);
Vector transformedDelta = trToWnd.Transform(new Point(e.HorizontalChange, e.VerticalChange)) -
trToWnd.Transform(new Point());
double delta;
if (_side == AnchorSide.Right || _side == AnchorSide.Left)
{
delta = Canvas.GetLeft(_resizerGhost) - _initialStartPoint.X;
}
else
{
delta = Canvas.GetTop(_resizerGhost) - _initialStartPoint.Y;
}
if (_side == AnchorSide.Right)
{
if (_model.AutoHideWidth == 0.0)
{
_model.AutoHideWidth = _internalHost.ActualWidth - delta;
}
else
{
_model.AutoHideWidth -= delta;
}
_internalGrid.ColumnDefinitions[1].Width = new GridLength(_model.AutoHideWidth, GridUnitType.Pixel);
}
else if (_side == AnchorSide.Left)
{
if (_model.AutoHideWidth == 0.0)
{
_model.AutoHideWidth = _internalHost.ActualWidth + delta;
}
else
{
_model.AutoHideWidth += delta;
}
_internalGrid.ColumnDefinitions[0].Width = new GridLength(_model.AutoHideWidth, GridUnitType.Pixel);
}
else if (_side == AnchorSide.Top)
{
if (_model.AutoHideHeight == 0.0)
{
_model.AutoHideHeight = _internalHost.ActualHeight + delta;
}
else
{
_model.AutoHideHeight += delta;
}
_internalGrid.RowDefinitions[0].Height = new GridLength(_model.AutoHideHeight, GridUnitType.Pixel);
}
else if (_side == AnchorSide.Bottom)
{
if (_model.AutoHideHeight == 0.0)
{
_model.AutoHideHeight = _internalHost.ActualHeight - delta;
}
else
{
_model.AutoHideHeight -= delta;
}
_internalGrid.RowDefinitions[1].Height = new GridLength(_model.AutoHideHeight, GridUnitType.Pixel);
}
HideResizerOverlayWindow();
IsResizing = false;
InvalidateMeasure();
}
void ShowResizerOverlayWindow(LayoutGridResizerControl splitter)
{
_resizerGhost = new Border()
{
Background = splitter.BackgroundWhileDragging,
Opacity = splitter.OpacityWhileDragging
};
var areaElement = _manager.GetAutoHideAreaElement();
var modelControlActualSize = this._internalHost.TransformActualSizeToAncestor();
Point ptTopLeftScreen = areaElement.PointToScreenDPIWithoutFlowDirection(new Point());
var managerSize = areaElement.TransformActualSizeToAncestor();
Size windowSize;
if (_side == AnchorSide.Right || _side == AnchorSide.Left)
{
windowSize = new Size(
managerSize.Width - 25.0 + splitter.ActualWidth,
managerSize.Height);
_resizerGhost.Width = splitter.ActualWidth;
_resizerGhost.Height = windowSize.Height;
ptTopLeftScreen.Offset(25, 0.0);
}
else
{
windowSize = new Size(
managerSize.Width,
managerSize.Height - _model.AutoHideMinHeight - 25.0 + splitter.ActualHeight);
_resizerGhost.Height = splitter.ActualHeight;
_resizerGhost.Width = windowSize.Width;
ptTopLeftScreen.Offset(0.0, 25.0);
}
_initialStartPoint = splitter.PointToScreenDPIWithoutFlowDirection(new Point()) - ptTopLeftScreen;
if (_side == AnchorSide.Right || _side == AnchorSide.Left)
{
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 = windowSize.Width,
Height = windowSize.Height,
Left = ptTopLeftScreen.X,
Top = ptTopLeftScreen.Y,
ShowActivated = false,
Owner = Window.GetWindow(this),
Content = panelHostResizer
};
_resizerWindowHost.Show();
}
void CreateInternalGrid()
{
_internalGrid = new Grid()
{
FlowDirection = System.Windows.FlowDirection.LeftToRight
};
_internalGrid.SetBinding(Grid.BackgroundProperty, new Binding("Background")
{
Source = this
});
_internalHost = new LayoutAnchorableControl()
{
Model = _model, Style = AnchorableStyle
};
_internalHost.SetBinding(FlowDirectionProperty, new Binding("Model.Root.Manager.FlowDirection")
{
Source = this
});
KeyboardNavigation.SetTabNavigation(_internalGrid, KeyboardNavigationMode.Cycle);
_resizer = new LayoutGridResizerControl();
_resizer.DragStarted += new System.Windows.Controls.Primitives.DragStartedEventHandler(OnResizerDragStarted);
_resizer.DragDelta += new System.Windows.Controls.Primitives.DragDeltaEventHandler(OnResizerDragDelta);
_resizer.DragCompleted += new System.Windows.Controls.Primitives.DragCompletedEventHandler(OnResizerDragCompleted);
if (_side == AnchorSide.Right)
{
_internalGrid.ColumnDefinitions.Add(new ColumnDefinition()
{
Width = new GridLength(_manager.GridSplitterWidth)
});
_internalGrid.ColumnDefinitions.Add(new ColumnDefinition()
{
Width = _model.AutoHideWidth == 0.0 ? new GridLength(_model.AutoHideMinWidth) : new GridLength(_model.AutoHideWidth, GridUnitType.Pixel)
});
Grid.SetColumn(_resizer, 0);
Grid.SetColumn(_internalHost, 1);
_resizer.Cursor = Cursors.SizeWE;
HorizontalAlignment = System.Windows.HorizontalAlignment.Right;
VerticalAlignment = System.Windows.VerticalAlignment.Stretch;
}
else if (_side == AnchorSide.Left)
{
_internalGrid.ColumnDefinitions.Add(new ColumnDefinition()
{
Width = _model.AutoHideWidth == 0.0 ? new GridLength(_model.AutoHideMinWidth) : new GridLength(_model.AutoHideWidth, GridUnitType.Pixel),
});
_internalGrid.ColumnDefinitions.Add(new ColumnDefinition()
{
Width = new GridLength(_manager.GridSplitterWidth)
});
Grid.SetColumn(_internalHost, 0);
Grid.SetColumn(_resizer, 1);
_resizer.Cursor = Cursors.SizeWE;
HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
VerticalAlignment = System.Windows.VerticalAlignment.Stretch;
}
else if (_side == AnchorSide.Top)
{
_internalGrid.RowDefinitions.Add(new RowDefinition()
{
Height = _model.AutoHideHeight == 0.0 ? new GridLength(_model.AutoHideMinHeight) : new GridLength(_model.AutoHideHeight, GridUnitType.Pixel),
});
_internalGrid.RowDefinitions.Add(new RowDefinition()
{
Height = new GridLength(_manager.GridSplitterHeight)
});
Grid.SetRow(_internalHost, 0);
Grid.SetRow(_resizer, 1);
_resizer.Cursor = Cursors.SizeNS;
VerticalAlignment = System.Windows.VerticalAlignment.Top;
HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;
}
else if (_side == AnchorSide.Bottom)
{
_internalGrid.RowDefinitions.Add(new RowDefinition()
{
Height = new GridLength(_manager.GridSplitterHeight)
});
_internalGrid.RowDefinitions.Add(new RowDefinition()
{
Height = _model.AutoHideHeight == 0.0 ? new GridLength(_model.AutoHideMinHeight) : new GridLength(_model.AutoHideHeight, GridUnitType.Pixel),
});
Grid.SetRow(_resizer, 0);
Grid.SetRow(_internalHost, 1);
_resizer.Cursor = Cursors.SizeNS;
VerticalAlignment = System.Windows.VerticalAlignment.Bottom;
HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;
}
_internalGrid.Children.Add(_resizer);
_internalGrid.Children.Add(_internalHost);
_internalHostPresenter.Content = _internalGrid;
}
void ShowResizerOverlayWindow(LayoutGridResizerControl splitter)
{
_resizerGhost = new Border()
{
Background = splitter.BackgroundWhileDragging,
Opacity = splitter.OpacityWhileDragging
};
int indexOfResizer = InternalChildren.IndexOf(splitter);
var prevChild = InternalChildren[indexOfResizer - 1] as FrameworkElement;
var nextChild = GetNextVisibleChild(indexOfResizer);
var prevChildActualSize = prevChild.TransformActualSizeToAncestor();
var nextChildActualSize = nextChild.TransformActualSizeToAncestor();
var prevChildModel = (ILayoutPositionableElement)(prevChild as ILayoutControl).Model;
var nextChildModel = (ILayoutPositionableElement)(nextChild as ILayoutControl).Model;
Point ptTopLeftScreen = prevChild.PointToScreenDPIWithoutFlowDirection(new Point());
Size actualSize;
if (Orientation == System.Windows.Controls.Orientation.Horizontal)
{
actualSize = new Size(
prevChildActualSize.Width - prevChildModel.DockMinWidth + splitter.ActualWidth + nextChildActualSize.Width - nextChildModel.DockMinWidth,
nextChildActualSize.Height);
_resizerGhost.Width = splitter.ActualWidth;
_resizerGhost.Height = actualSize.Height;
ptTopLeftScreen.Offset(prevChildModel.DockMinWidth, 0.0);
}
else
{
actualSize = new Size(
prevChildActualSize.Width,
prevChildActualSize.Height - prevChildModel.DockMinHeight + splitter.ActualHeight + nextChildActualSize.Height - nextChildModel.DockMinHeight);
_resizerGhost.Height = splitter.ActualHeight;
_resizerGhost.Width = actualSize.Width;
ptTopLeftScreen.Offset(0.0, prevChildModel.DockMinHeight);
}
_initialStartPoint = splitter.PointToScreenDPIWithoutFlowDirection(new Point()) - ptTopLeftScreen;
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()
{
SizeToContent = System.Windows.SizeToContent.Manual,
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
};
_resizerWindowHost.Loaded += (s, e) =>
{
_resizerWindowHost.SetParentToMainWindowOf(this);
};
_resizerWindowHost.Show();
}
void OnSplitterDragCompleted(object sender, System.Windows.Controls.Primitives.DragCompletedEventArgs e)
{
LayoutGridResizerControl splitter = sender as LayoutGridResizerControl;
var rootVisual = this.FindVisualTreeRoot() as Visual;
var trToWnd = TransformToAncestor(rootVisual);
Vector transformedDelta = trToWnd.Transform(new Point(e.HorizontalChange, e.VerticalChange)) -
trToWnd.Transform(new Point());
double delta;
if (Orientation == System.Windows.Controls.Orientation.Horizontal)
{
delta = Canvas.GetLeft(_resizerGhost) - _initialStartPoint.X;
}
else
{
delta = Canvas.GetTop(_resizerGhost) - _initialStartPoint.Y;
}
int indexOfResizer = InternalChildren.IndexOf(splitter);
var prevChild = InternalChildren[indexOfResizer - 1] as FrameworkElement;
var nextChild = GetNextVisibleChild(indexOfResizer);
var prevChildActualSize = prevChild.TransformActualSizeToAncestor();
var nextChildActualSize = nextChild.TransformActualSizeToAncestor();
var prevChildModel = (ILayoutPositionableElement)(prevChild as ILayoutControl).Model;
var nextChildModel = (ILayoutPositionableElement)(nextChild as ILayoutControl).Model;
if (Orientation == System.Windows.Controls.Orientation.Horizontal)
{
if (prevChildModel.DockWidth.IsStar)
{
prevChildModel.DockWidth = new GridLength(prevChildModel.DockWidth.Value * (prevChildActualSize.Width + delta) / prevChildActualSize.Width, GridUnitType.Star);
}
else
{
prevChildModel.DockWidth = new GridLength(prevChildModel.DockWidth.Value + delta, GridUnitType.Pixel);
}
if (nextChildModel.DockWidth.IsStar)
{
nextChildModel.DockWidth = new GridLength(nextChildModel.DockWidth.Value * (nextChildActualSize.Width - delta) / nextChildActualSize.Width, GridUnitType.Star);
}
else
{
nextChildModel.DockWidth = new GridLength(nextChildModel.DockWidth.Value - delta, GridUnitType.Pixel);
}
}
else
{
if (prevChildModel.DockHeight.IsStar)
{
prevChildModel.DockHeight = new GridLength(prevChildModel.DockHeight.Value * (prevChildActualSize.Height + delta) / prevChildActualSize.Height, GridUnitType.Star);
}
else
{
prevChildModel.DockHeight = new GridLength(prevChildModel.DockHeight.Value + delta, GridUnitType.Pixel);
}
if (nextChildModel.DockHeight.IsStar)
{
nextChildModel.DockHeight = new GridLength(nextChildModel.DockHeight.Value * (nextChildActualSize.Height - delta) / nextChildActualSize.Height, GridUnitType.Star);
}
else
{
nextChildModel.DockHeight = new GridLength(nextChildModel.DockHeight.Value - delta, GridUnitType.Pixel);
}
}
HideResizerOverlayWindow();
}