private void Initialize()
{
if (_left == null)
{
Graphics.Add(_left = new InvariantLinePrimitive());
_left.InvariantBottomRight = PointF.Empty;
}
if (_right == null)
{
Graphics.Add(_right = new InvariantLinePrimitive());
_right.InvariantBottomRight = PointF.Empty;
}
if (_top == null)
{
Graphics.Add(_top = new InvariantLinePrimitive());
_top.InvariantBottomRight = PointF.Empty;
}
if (_bottom == null)
{
Graphics.Add(_bottom = new InvariantLinePrimitive());
_bottom.InvariantBottomRight = PointF.Empty;
}
RecomputeCrosshair();
}
private void OnCloneComplete()
{
IList <IGraphic> lines = CollectionUtils.Select(base.Graphics,
delegate(IGraphic test) { return(test is InvariantLinePrimitive); });
_left = lines[0] as InvariantLinePrimitive;
_right = lines[1] as InvariantLinePrimitive;
_top = lines[2] as InvariantLinePrimitive;
_bottom = lines[3] as InvariantLinePrimitive;
Initialize();
}
/// <summary> /// Draws a <see cref="InvariantLinePrimitive"/>. Must be overridden and implemented. /// </summary> protected abstract void DrawInvariantLinePrimitive(InvariantLinePrimitive line);
/// <summary>
/// Draws a <see cref="InvariantLinePrimitive"/>.
/// </summary>
protected override void DrawInvariantLinePrimitive(InvariantLinePrimitive line)
{
InternalDrawLinePrimitive(line);
}
protected virtual void DrawInvariantLinePrimitive(InvariantLinePrimitive line)
{
GdiRenderer.DrawLinePrimitive(Surface.OverlayBuffer, _pen, line, Dpi);
}
/// <summary>
/// Draws a <see cref="InvariantLinePrimitive"/>.
/// </summary>
protected override void DrawInvariantLinePrimitive(InvariantLinePrimitive line)
{
DrawLinePrimitive(Surface.FinalBuffer, _pen, line, Dpi);
}