/// <summary> 工作区域重绘事件
/// </summary>
private void picWorkArea_Paint(object sender, PaintEventArgs e)
{
e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
//判断如果有元素选中
if (_wa.IsSelectElement)
{
_wa.DrawElement(e.Graphics);
}
//判断框选鼠标左键按下位置不为空，绘制选择框
if (!Point.Empty.Equals(_mldpoint))
{
Pen dotpen = new Pen(Color.Red, 1.5f);
/* 如果绘制路段或道岔，绘制临时线
* 否则绘制框选框
*/
if (ElementType.Path.Equals(_eletype) || ElementType.Fork.Equals(_eletype))
{
using (dotpen)
{
dotpen.DashStyle = DashStyle.Dash;
_mldpoint.X += hscWScroll.Value;
_mldpoint.Y += vscWScroll.Value;
_mlmpoint.X += hscWScroll.Value;
_mlmpoint.Y += vscWScroll.Value;
_mldpoint = _wa.CorrectPoint(_mldpoint);
_mlmpoint = _wa.CorrectPoint(_mlmpoint);
_mldpoint.X -= hscWScroll.Value;
_mldpoint.Y -= vscWScroll.Value;
_mlmpoint.X -= hscWScroll.Value;
_mlmpoint.Y -= vscWScroll.Value;
e.Graphics.DrawLine(dotpen, _mldpoint, _mlmpoint);
}
}
else
{
using (dotpen)
{
dotpen.DashStyle = DashStyle.Dash;
e.Graphics.DrawRectangle(dotpen, _selectrect);
}
}
}
}
