/// <summary>
/// Initialize new instance of displaying engine
/// </summary>
/// <param name="output">Output where drawings will be displayed</param>
internal DisplayEngine(DiagramCanvas output)
{
Output = output;
ContentShiftable.Attach(Output);
ContentZoomable.Attach(Output);
}
/// <summary>
/// Get global position computed to local coordinates.
/// </summary>
/// <param name="globalPosition">The global position.</param>
/// <returns>Local position.</returns>
internal Point AsLocalPosition(Point globalPosition)
{
var diff = GlobalPosition - globalPosition;
var localPos = DiagramCanvas.GetPosition(this);
localPos.X -= diff.X;
localPos.Y -= diff.Y;
return localPos;
}
/// <summary>
/// Initialize new instance of <see cref="DrawingProvider"/>
/// </summary>
/// <param name="output">Output that is used by current provider</param>
/// <param name="diagramFactory">Factory that is used for creating diagrams</param>
public DrawingProvider(DiagramCanvas output, AbstractDiagramFactory diagramFactory)
{
Engine = new DisplayEngine(output);
_diagramFactory = diagramFactory;
}