/// <summary>
/// Start up the resize tool, assuming <see cref="M:Northwoods.Go.GoToolResizing.CanStart" /> returned true.
/// </summary>
/// <remarks>
/// This sets the <see cref="P:Northwoods.Go.GoTool.CurrentObject" /> to be the
/// <see cref="P:Northwoods.Go.IGoHandle.HandledObject" /> of the handle returned by
/// <see cref="M:Northwoods.Go.GoToolResizing.PickResizeHandle(System.Drawing.PointF)" />.
/// It starts a transaction, hides any selection handles for the current
/// object, and remembers the object's <see cref="P:Northwoods.Go.GoToolResizing.OriginalBounds" /> and
/// the handle's <see cref="P:Northwoods.Go.GoToolResizing.OriginalPoint" />.
/// Finally it calls <see cref="M:Northwoods.Go.GoToolResizing.DoResizing(Northwoods.Go.GoInputState)" /> with an event type of
/// <c>GoInputState.Start</c>.
/// </remarks>
public override void Start()
{
IGoHandle goHandle = PickResizeHandle(base.FirstInput.DocPoint);
if (goHandle == null)
{
return;
}
GoObject handledObject = goHandle.HandledObject;
if (handledObject == null)
{
return;
}
base.CurrentObject = handledObject;
StartTransaction();
if (base.Selection.GetHandleCount(handledObject) > 0)
{
mySelectedObject = goHandle.SelectedObject;
if (HidesSelectionHandles)
{
mySelectionHidden = true;
handledObject.RemoveSelectionHandles(base.Selection);
}
}
ResizeHandle = goHandle;
OriginalBounds = handledObject.Bounds;
OriginalPoint = goHandle.GoObject.GetSpotLocation(1);
base.LastInput.InputState = GoInputState.Start;
DoResizing(GoInputState.Start);
}
/// <summary>
/// Start relinking by by calling <see cref="M:Northwoods.Go.GoToolLinking.StartRelink(Northwoods.Go.IGoLink,System.Boolean,System.Drawing.PointF)" />
/// and hiding any selection handles for the link.
/// </summary>
/// <remarks>
/// This assumes that <see cref="P:Northwoods.Go.GoToolLinking.Link" /> and <see cref="P:Northwoods.Go.GoToolLinking.Forwards" />
/// properties have been set, as is normally done by the <see cref="M:Northwoods.Go.GoToolRelinking.CanStart" /> method.
/// </remarks>
public override void Start()
{
base.Start();
GoObject currentObject = base.CurrentObject;
if (currentObject != null && base.Selection.GetHandleCount(currentObject) > 0)
{
mySelectionHidden = true;
currentObject.RemoveSelectionHandles(base.Selection);
}
StartRelink(base.Link, base.Forwards, base.LastInput.DocPoint);
}
/// <summary>
/// Call <see cref="M:Northwoods.Go.GoObject.AddSelectionHandles(Northwoods.Go.GoSelection,Northwoods.Go.GoObject)" /> on the
/// <see cref="P:Northwoods.Go.GoObject.SelectionObject" /> of each selected object
/// if <see cref="M:Northwoods.Go.GoObject.CanView" /> is true, or call
/// <see cref="M:Northwoods.Go.GoObject.RemoveSelectionHandles(Northwoods.Go.GoSelection)" /> otherwise.
/// </summary>
/// <seealso cref="M:Northwoods.Go.GoSelection.RemoveAllSelectionHandles" />
public void AddAllSelectionHandles()
{
using (GoCollectionEnumerator goCollectionEnumerator = GetEnumerator())
{
while (goCollectionEnumerator.MoveNext())
{
GoObject current = goCollectionEnumerator.Current;
GoObject selectionObject = current.SelectionObject;
if (selectionObject != null)
{
if (current.CanView())
{
selectionObject.AddSelectionHandles(this, current);
}
else
{
selectionObject.RemoveSelectionHandles(this);
}
}
}
}
}