/// <summary>
/// Create and determine the appearance of a small handle for an object.
/// </summary>
/// <param name="obj"></param>
/// <param name="selectedObj"></param>
/// <param name="loc"></param>
/// <param name="handleid"></param>
/// <param name="filled"></param>
/// <returns></returns>
/// <remarks>
/// This method uses <see cref="M:Northwoods.Go.GoObject.CreateResizeHandle(System.Int32)" /> to
/// actually allocate the handle.
/// The size of the handle, if not already non-zero, is determined by
/// <see cref="P:Northwoods.Go.GoView.ResizeHandleSize" />.
/// The pen and brush of the handle are determined by
/// <see cref="P:Northwoods.Go.GoView.PrimarySelectionColor" /> and <see cref="P:Northwoods.Go.GoView.SecondarySelectionColor" />.
/// The new handle is associated with the <paramref name="obj" /> and its
/// <see cref="P:Northwoods.Go.IGoHandle.SelectedObject" /> property is set to <paramref name="selectedObj" />.
/// </remarks>
/// <seealso cref="M:Northwoods.Go.GoSelection.CreateBoundingHandle(Northwoods.Go.GoObject,Northwoods.Go.GoObject)" />
public virtual IGoHandle CreateResizeHandle(GoObject obj, GoObject selectedObj, PointF loc, int handleid, bool filled)
{
IGoHandle goHandle = obj.CreateResizeHandle(handleid);
if (goHandle == null)
{
return(null);
}
goHandle.HandleID = handleid;
goHandle.SelectedObject = selectedObj;
GoObject goObject = goHandle.GoObject;
if (goObject == null)
{
return(null);
}
GoView view = View;
SizeF sizeF = goObject.Size;
if (sizeF.Width <= 0f || sizeF.Height <= 0f)
{
sizeF = (view?.ResizeHandleSize ?? new SizeF(6f, 6f));
}
if (view != null)
{
sizeF.Width /= view.WorldScale.Width;
sizeF.Height /= view.WorldScale.Height;
}
goObject.Bounds = new RectangleF(loc.X - sizeF.Width / 2f, loc.Y - sizeF.Height / 2f, sizeF.Width, sizeF.Height);
if (handleid == 0)
{
goObject.Selectable = false;
}
else
{
goObject.Selectable = true;
}
GoShape goShape = goObject as GoShape;
if (goShape != null)
{
Color color = Color.LightGray;
if (view != null)
{
color = ((!Focused) ? view.NoFocusSelectionColor : ((Primary == null || Primary.SelectionObject != obj) ? view.SecondarySelectionColor : view.PrimarySelectionColor));
}
if (filled)
{
float resizeHandlePenWidth = view.ResizeHandlePenWidth;
float num = (resizeHandlePenWidth == 0f) ? 0f : (resizeHandlePenWidth / view.WorldScale.Width);
if (myResizeHandlePen == null || GoShape.GetPenColor(myResizeHandlePen, myResizeHandlePenColor) != myResizeHandlePenColor || GoShape.GetPenWidth(myResizeHandlePen) != num)
{
myResizeHandlePen = GoShape.NewPen(myResizeHandlePenColor, num);
}
goShape.Pen = myResizeHandlePen;
if (myResizeHandleBrush == null || myResizeHandleBrush.Color != color)
{
myResizeHandleBrush = new SolidBrush(color);
}
goShape.Brush = myResizeHandleBrush;
}
else
{
float resizeHandlePenWidth2 = view.ResizeHandlePenWidth;
float num2 = (resizeHandlePenWidth2 == 0f) ? 0f : ((resizeHandlePenWidth2 + 1f) / view.WorldScale.Width);
if (myResizeHandlePen == null || GoShape.GetPenColor(myResizeHandlePen, color) != color || GoShape.GetPenWidth(myResizeHandlePen) != num2)
{
myResizeHandlePen = GoShape.NewPen(color, num2);
}
goShape.Pen = myResizeHandlePen;
goShape.Brush = null;
}
}
AddHandle(obj, goHandle);
return(goHandle);
}