public SvgDrawingCanvas()
{
_drawForInteractivity = true;
_appTitle = DefaultTitle;
_drawObjects = new List <Drawing>();
_linkObjects = new List <Drawing>();
_displayTransform = Transform.Identity;
// Create a tooltip and set its position.
_tooltip = new ToolTip();
_tooltip.Placement = PlacementMode.MousePoint;
_tooltip.PlacementRectangle = new Rect(50, 0, 0, 0);
_tooltip.HorizontalOffset = 20;
_tooltip.VerticalOffset = 20;
_tooltipText = new TextBlock();
_tooltipText.Text = string.Empty;
_tooltipText.Margin = new Thickness(6, 0, 0, 0);
//Create BulletDecorator and set it as the tooltip content.
Ellipse bullet = new Ellipse();
bullet.Height = 10;
bullet.Width = 10;
bullet.Fill = Brushes.LightCyan;
BulletDecorator decorator = new BulletDecorator();
decorator.Bullet = bullet;
decorator.Margin = new Thickness(0, 0, 10, 0);
decorator.Child = _tooltipText;
_tooltip.Content = decorator;
_tooltip.IsOpen = false;
_tooltip.Visibility = Visibility.Hidden;
//Finally, set tooltip on this canvas
this.ToolTip = _tooltip;
this.Background = Brushes.Transparent;
_animationCanvas = new SvgAnimationLayer(this);
this.SnapsToDevicePixels = true;
}
