public void Selected(DesignTemplate s)
{
this.ClearAllSelection();
s.IsSelected = true;
this.SelectedItems.Add(s);
s.ZIndex = -1;
}
private void DecreaseAllZIndex()
{
foreach (var s in this.Children)
{
DesignTemplate step = s as DesignTemplate;
if (step == null)
{
continue;
}
step.ZIndex--;
}
}
private static void AreaProperty_Changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
DesignTemplate design = d as DesignTemplate;
if (design != null)
{
if (e.Property == DesignTemplate.WidthProperty)
{
design.RaisePropertyChanged("Width");
}
else if (e.Property == DesignTemplate.HeightProperty)
{
design.RaisePropertyChanged("Height");
}
}
}
protected override void OnPreviewMouseDown(System.Windows.Input.MouseButtonEventArgs e)
{
MultiSeleted = null;
if (e.Source == this)
{
this.ClearAllSelection();
this.MultiSeleted = e.GetPosition(this);
if (!this.Children.Contains(this.MultiSeletedRect))
{
this.MultiSeletedRect.Height = 0;
this.MultiSeletedRect.Width = 0;
this.MultiSeletedRect.StrokeThickness = 1;
this.MultiSeletedRect.Stroke = Brushes.LightSlateGray;
this.MultiSeletedRect.StrokeDashArray = new DoubleCollection {
2, 2
};
this.Children.Add(this.MultiSeletedRect);
Canvas.SetLeft(this.MultiSeletedRect, this.MultiSeleted.Value.X);
Canvas.SetTop(this.MultiSeletedRect, this.MultiSeleted.Value.Y);
}
}
else if (e.Source is DesignTemplate)
{
DesignTemplate step = e.Source as DesignTemplate;
if ((Keyboard.Modifiers & (ModifierKeys.Shift | ModifierKeys.Control)) != ModifierKeys.None)
{
if (step.IsSelected)
{
this.ClearSelection(step);
}
else
{
this.AddSelection(step);
}
}
else if (!step.IsSelected)
{
this.Selected(step);
}
}
base.OnPreviewMouseDown(e);
}
public void AddSelection(DesignTemplate select)
{
this.AddSelection(new List <DesignTemplate> {
select
});
}
public void ClearSelection(DesignTemplate design)
{
design.ZIndex--;
this.SelectedItems.Remove(design);
design.IsSelected = false;
}
protected override void OnMouseMove(MouseEventArgs e)
{
if (e.LeftButton != MouseButtonState.Pressed)
{
this.MultiSeleted = null;
return;
}
if (this.MultiSeleted.HasValue)
{
this.CaptureMouse();
Point start = (Point)this.MultiSeleted;
Point end = e.GetPosition(this);
end.X = end.X < 0 ? 0 : end.X;
end.Y = end.Y < 0 ? 0 : end.Y;
if (end.X < start.X)
{
Canvas.SetLeft(this.MultiSeletedRect, end.X);
}
if (end.Y < start.Y)
{
Canvas.SetTop(this.MultiSeletedRect, end.Y);
}
this.MultiSeletedRect.Height = Math.Abs(end.Y - start.Y);
this.MultiSeletedRect.Width = Math.Abs(end.X - start.X);
Rect rect = new Rect(start, end);
List <DesignTemplate> steps = new List <DesignTemplate>();
foreach (var s in this.Children)
{
DesignTemplate step = s as DesignTemplate;
if (step == null)
{
continue;
}
Rect item = VisualTreeHelper.GetDescendantBounds(step);
item = step.TransformToAncestor(this).TransformBounds(item);
if (step is Step)
{
if (rect.IntersectsWith(item))
{
steps.Add(step);
}
else
{
this.ClearSelection(step);
}
}
else
{
if (rect.Contains(item))
{
steps.Add(step);
}
else
{
this.ClearSelection(step);
}
}
}
if (steps.Count > 0)
{
this.AddSelection(steps);
}
}
base.OnMouseMove(e);
}