/// <summary>
/// 鼠标键抬起时执行该函数.
/// 由于连线可以拖动来画,所以鼠标抬起时表示可以画一条连线.
/// 由于连线的折点可以改变位置，所以鼠标抬起时也可能是折点位置修改好了。
/// 切换工具的工作模式， 然后判断橡皮圈是否圈选了某些节点，如果是，就把它们添加到SelectedItems中。
/// </summary>
/// <param name="e"></param>
private void WorkPlace_MouseUp(object sender, MouseEventArgs e)
{
if (ToolModel == true) //工具模式下
{
if (this.Module == 0 && _isDrawingLine == true) //画线,终止点
{
Point point = new Point(e.X - this.AutoScrollPosition.X, e.Y - this.AutoScrollPosition.Y);
foreach (BaseComponent c in TaskItems)
{
if (c.Contains(point))
{
_endTask = c;
if (_endTask != _startTask)
{
var l = new Link(_startTask, _endTask)
{
flowGuid = this.WorkFlowId
};
LineItems.Add(l);
IsModify = true;
//添加Undo操作用的
// his.OperationLineItem.Add(l);
}
this._isDrawingLine = false;
break;
}
else
{
_endTask = null;
this._isDrawingLine = false;
}
}
this.Invalidate();
}
ToolModel = LockModel; //是否锁定，画多个任务节点
}
Point p = new Point(e.X - this.AutoScrollPosition.X, e.Y - this.AutoScrollPosition.Y);
//折线
if (this.SelectedLine.Count > 0 && this.CanEdit)
{
if (this.SelectedLine.Count > 0)
{
//oldBreakPoint.Add(link.breakPoint);
if (this._isZhexian)
{
_link.breakPointX[_breakIndex] = p.X;
_link.breakPointY[_breakIndex] = p.Y;
this._breakIndex = -1;
this._isZhexian = false;
IsModify = true;
}
//this.OperationLineItem.Add(link);
//this.OperationType.Add(UndoType.Zhexian);
this.Invalidate();
}
}
//拖拽
if (_dragger != null)
{
if (this.CanEdit && !_dragger.location.Equals(p))
{
_dragger.DragTo(p);
_dragger.End();
IsModify = true;
}
_dragger = null;
return;
}
//橡皮圈选择区域时的鼠标释放
if (_rubberband != null)
{
Rectangle rect = _rubberband.Bounds();
_rubberband.End();
_rubberband = null;
foreach (BaseComponent c in TaskItems)
{
if (rect.Contains(c.bounds))
{
SelectedItems.Add(c);
}
}
this.Invalidate();
}
}
private void WorkPlace_MouseDown(object sender, MouseEventArgs e)
{
//点击的是右键
if (MouseButtons == MouseButtons.Right)
{
if (SelectedLine.Count != 0 && SelectedItems.Count == 0) //选中直线，没有选中任务节点
{
this.ContextMenu = this.contextMenu;
}
else if (SelectedItems.Count > 0) //选中任务节点
{
this.ContextMenu = this.contextMenu;
}
else //直线和任务节点都没有选中
{
this.ContextMenu = this.cmPanel;
}
return;
}
//点击的是左键
if (ToolModel == true) //工具模式下
{
Point p = new Point(e.X - this.AutoScrollPosition.X, e.Y - this.AutoScrollPosition.Y);
//操作节点
switch (this.Module)
{
case 1:
this._stId++;
StartTask st = new StartTask(p, _stId);
AddItem(st, 1);
break;
case 2:
this._endtId++;
EndTask endt = new EndTask(p, _endtId);
AddItem(endt, 2);
break;
case 3:
this._altId++;
AlternateTask at = new AlternateTask(p, _altId);
AddItem(at, 3);
break;
case 4:
this._jtId++;
JudgeTask jt = new JudgeTask(p, _jtId);
AddItem(jt, 4);
break;
case 5:
this._etId++;
ViewTask et = new ViewTask(p, _etId);
AddItem(et, 5);
break;
case 6:
this._subId++;
SubFlowTask sft = new SubFlowTask(p, _subId);
AddItem(sft, 6);
break;
case 0: //连线
Point point = new Point(e.X - this.AutoScrollPosition.X, e.Y - this.AutoScrollPosition.Y);
foreach (BaseComponent c in TaskItems)
{
if (c.Contains(point))
{
_startTask = c;
this._isDrawingLine = true;
_startPoint.X = e.X;
_startPoint.Y = e.Y;
break;
}
else
{
_startTask = null;
this._isDrawingLine = false;
}
}
break;
case -1: //自连线
point = new Point(e.X - this.AutoScrollPosition.X, e.Y - this.AutoScrollPosition.Y);
foreach (BaseComponent c in TaskItems)
{
if (c.Contains(point))
{
_startTask = c;
_endTask = c;
Link lnk = new Link(_startTask, _endTask);
lnk.flowGuid = this.WorkFlowId;
this.LineItems.Add(lnk);
IsModify = true;
this.Invalidate();
break;
}
}
break;
}
if (NowButton != null && LockModel == false)
{
NowButton.Checked = false; //添加完后修改toolbar按钮为非选中状态
}
}
else //非工具模式下
{
Point p = new Point(e.X - this.AutoScrollPosition.X, e.Y - this.AutoScrollPosition.Y);
BaseComponent baseComponent = IsInAItem(p);
_link = IsInALine(p);
if (baseComponent != null) //鼠标点击了某一个任务节点
{
if (IsInASelectedItem(p))
{
MouseDownInAComponent(p);
}
else
{
SelectedItems.Clear();
SelectedItems.Add(baseComponent);
SelectedLine.Clear();
MouseDownInAComponent(p);
this.Invalidate();
}
}
else
{
if (_link != null) //点击了某条连线
{
SelectedLine.Clear();
SelectedLine.Add(_link);
SelectedItems.Clear();
//点中的是锚点话,拖动锚点或者删除,在这里认为是拖动.利用函数来找出startPoint,endPoint和breakIndex等
_isInAnchor = IsInAnchor(p);
_breakPoint = p;
this.Invalidate();
}
else
{
SelectedItems.Clear();
SelectedLine.Clear();
if (e.Button == MouseButtons.Right)
{
return;
}
else
{
_rubberband = new Rubberband(this, p);
}
}
}
//this.label1.Text=SelectedLine.Count.ToString();
}
}