/// <summary>
/// 呈递修改的默认实现,本方法将呈递撤销栈中的修改操作,并清空撤销/重做栈;
/// </summary>
/// <param name="canvasContext"></param>
protected override void OnCommit()
{
if (CanvasContext == null)
{
return;
}
//若撤销栈为空,则不进行呈递修改操作;
if (UndoDrawObjects.Count == 0)
{
return;
}
if (CanvasContext.ActiveLayer == null)
{
return;
}
var commitParams = new UniqueTypeEditToolCommitParams(new List <DrawObject>(UndoDrawObjects.ToArray()))
{
AppliedLayer = CanvasContext.ActiveLayer
};
OnCommitParams(commitParams);
if (commitParams.Cancel)
{
return;
}
if (commitParams.AppliedLayer == null)
{
return;
}
if (commitParams.AddedDrawObjects.Count == 0)
{
return;
}
//将撤销栈拷贝后呈递事务;
var addedDrawObjects = commitParams.AddedDrawObjects.ToArray();
var appliedLayer = commitParams.AppliedLayer;
appliedLayer.AddDrawObjects(addedDrawObjects);
var transAction = new StandardEditTransaction(
() => {
appliedLayer.RemoveDrawObjects(addedDrawObjects);
},
() => {
appliedLayer.AddDrawObjects(addedDrawObjects);
}
);
CommitTransaction(transAction);
//清除撤销/撤销栈;
UndoDrawObjects.Clear();
RedoDrawObjects.Clear();
}
protected virtual void OnCommitParams(UniqueTypeEditToolCommitParams commitParams)
{
}
