private _Db.Viewport layoutViewportGetter(_Db.Layout lay)
{
_Db.ObjectIdCollection viewIds = lay.GetViewports();
_Db.Viewport vp = null;
foreach (_Db.ObjectId id in viewIds)
{
_Db.Viewport vp2 = _c.trans.GetObject(id, _Db.OpenMode.ForWrite) as _Db.Viewport;
if (vp2 != null && vp2.Number == 2)
{
vp = vp2;
break;
}
}
if (vp == null)
{
_Db.BlockTableRecord btr = _c.trans.GetObject(lay.BlockTableRecordId, _Db.OpenMode.ForWrite) as _Db.BlockTableRecord;
vp = new _Db.Viewport();
btr.AppendEntity(vp);
_c.trans.AddNewlyCreatedDBObject(vp, true);
vp.On = true;
vp.GridOn = false;
}
return(vp);
}
/// <summary>
/// Applies an action to the specified viewport from this layout.
/// Creates a new viewport if none is found withthat number.
/// </summary>
/// <param name="tr">The transaction to use to open the viewports.</param>
/// <param name="vpNum">The number of the target viewport.</param>
/// <param name="f">The action to apply to each of the viewports.</param>
public static void ApplyToViewport(
this _AcDb.Layout lay, _AcDb.Transaction tr, int vpNum, Action <_AcDb.Viewport> f
)
{
var vpIds = lay.GetViewports();
_AcDb.Viewport vp = null;
foreach (_AcDb.ObjectId vpId in vpIds)
{
var vp2 = tr.GetObject(vpId, _AcDb.OpenMode.ForWrite) as _AcDb.Viewport;
if (vp2 != null && vp2.Number == vpNum)
{
// We have found our viewport, so call the action
vp = vp2;
break;
}
}
if (vp == null)
{
// We have not found our viewport, so create one
var btr =
(_AcDb.BlockTableRecord)tr.GetObject(
lay.BlockTableRecordId, _AcDb.OpenMode.ForWrite
);
vp = new _AcDb.Viewport();
// Add it to the database
btr.AppendEntity(vp);
tr.AddNewlyCreatedDBObject(vp, true);
// Turn it - and its grid - on
vp.On = true;
vp.GridOn = true;
}
// Finally we call our function on it
f(vp);
}
