protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (DesignMode)
{
return;
}
m_MouseMovePos = e.Location;
m_MouseMovePos.X += _hScroll.Value;
m_MouseMovePos.Y += _vScroll.Value;
if (_vScroll.IsMouseDown)
{
return;
}
if (_hScroll.IsMouseDown)
{
return;
}
int i = 0;
if (AllowUserToResizeColumns && m_DragRowOrColumn != 2)//调整列宽
{
foreach (var item in TableColumns)
{
RectangleF temp = new RectangleF(item.Bounds.Right - 2, 0, 4, item.Bounds.Height);
if (temp.Contains(e.Location))
{
this.Cursor = Cursors.SizeWE;
m_DragColumnPos = i;
m_MouseIntent = MouseIntent.PressMove;
return;
}
i++;
}
m_DragColumnPos = -1;
this.Cursor = Cursors.Default;
}
//this.Cursor = Cursors.Default;
i = 0;
int t = -1;
foreach (var item in _rows)
{
if (item.Contains(m_MouseMovePos))
{
t = i;
break;
}
i++;
}
if (e.Button == MouseButtons.Left && m_DragRowOrColumn > -1)
{
i = 0;
if (m_DragRowOrColumn == 1)
{
foreach (var item in TableColumns)
{
if (item.Bounds.Contains(e.Location))
{
m_Prepare = new RectangleF(item.Bounds.Location, new SizeF(2, item.Bounds.Height));
m_AfterDragPos = i;
m_MouseIntent = MouseIntent.PressMove;
this.Invalidate();
return;
}
i++;
}
}
else if (m_DragRowOrColumn == 0)
{
//处理行拖放
if (t > -1)
{
m_Prepare = new RectangleF(_rows[t].Location, new SizeF(100, 2));
//m_Prepare = new RectangleF(m_MouseMovePos, new SizeF(100, 2));
m_AfterDragPos = t;
m_MouseIntent = MouseIntent.PressMove;
this.Invalidate();
return;
}
}
else if (m_DragRowOrColumn == 2)
{
float w = m_MouseMovePos.X - m_MouseDownPos.X;
if (w == 0)
{
return;
}
TableColumns[m_DragColumnPos].Width = (int)(TableColumns[m_DragColumnPos].Bounds.Width + w);
this.ResetColumns();
this.Invalidate();
m_MouseDownPos = m_MouseMovePos;
m_MouseIntent = MouseIntent.PressMove;
return;
//Console.WriteLine(m_DragColumnPos);
}
//this.Invalidate();
}
MouseMoveIndex = t;
//if (m_MouseMoveIndex > -1)
//this.Invalidate();
}
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (DesignMode)
{
return;
}
if (_vScroll.IsMouseDown)
{
return;
}
if (m_DragRowOrColumn > -1 && m_AfterDragPos != m_BeforeDragPos && m_AfterDragPos > -1 && m_BeforeDragPos > -1)
{
//切换位置
if (m_DragRowOrColumn == 1)
{
TableColumns.Transposition(m_BeforeDragPos, m_AfterDragPos);
ResetColumns();
OnColumnDragChanged(EventArgs.Empty);
m_MouseIntent = MouseIntent.None;
}
else
{
m_SelectionIndex = -1;
object temp = dataSource[m_BeforeDragPos];
dataSource.Remove(temp);
dataSource.Insert(m_AfterDragPos, temp);
OnRowDragChanged(EventArgs.Empty);
m_MouseIntent = MouseIntent.None;
}
}
int tempIndex = m_BeforeDragPos;
int tempDrag = m_DragRowOrColumn;
MouseIntent tempIntent = m_MouseIntent;
m_MouseIntent = MouseIntent.None;
m_DragRowOrColumn = -1;
m_DragColumnPos = -1;
m_AfterDragPos = -1;
m_BeforeDragPos = -1;
m_Prepare = Rectangle.Empty;
m_MouseDownOffset = PointF.Empty;
this.Cursor = Cursors.Default;
if (m_MousePreview != null)
{
m_MousePreview.Dispose();
m_MousePreview = null;
this.Invalidate();
}
switch (tempIntent)
{
case MouseIntent.None: //判断按下位置
HandleEvent(e);
break;
case MouseIntent.MouseDown: //按下触发 点击事件
//判断按下位置为行/标题
if (tempDrag == 1 && tempIndex > -1)
{
//按下位置为 标题行
TableColumn item = TableColumns[tempIndex];
if (!item.SortColumn)
{
return;
}
item.Desc = !item.Desc;
OnSortClick(new TableColumnSortEventArgs(item));
}
else
{
SelectionIndex = tempIndex;
OnSelectionChanged(new SelectionChangeEventArgs(tempIndex));
}
break;
case MouseIntent.PressMove:
break;
default:
break;
}
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (DesignMode)
{
return;
}
m_MouseDownPos = e.Location;
m_MouseDownPos.X += _hScroll.Value;
m_MouseDownPos.Y += _vScroll.Value;
if (_vScroll.IsMouseDown)
{
return;
}
if (_hScroll.IsMouseDown)
{
return;
}
if (e.Button == MouseButtons.Left)
{
int i = 0;
if (m_DragColumnPos > 0)
{
m_DragRowOrColumn = 2;
return;
}
if (AllowUserToOrderColumns)
{
i = 0;
foreach (var item in TableColumns)
{
if (item.Bounds.Contains(e.Location))
{
m_DragRowOrColumn = 1;
m_MousePreview?.Dispose();
m_MousePreview = new Bitmap((int)item.Bounds.Width, (int)item.Bounds.Height);
using (Graphics g = Graphics.FromImage(m_MousePreview))
{
g.Clear(Color.FromArgb(60, Color.White));
using (SolidBrush solidBrush = new SolidBrush(this.ForeColor))
item.Draw(g, solidBrush, new RectangleF(0, 0, item.Bounds.Width, item.Bounds.Height));
}
m_BeforeDragPos = i;
m_MouseDownOffset = new PointF(m_MouseDownPos.X - item.Bounds.X, m_MouseDownPos.Y - item.Bounds.Y);
m_MouseIntent = MouseIntent.MouseDown;
return;
}
i++;
}
}
//处理行拖放
i = 0;
if (AllowUserToOrderRows)
{
foreach (var item in _rows)
{
if (item.Contains(m_MouseDownPos))
{
m_DragRowOrColumn = 0;
m_MousePreview?.Dispose();
m_MousePreview = new Bitmap((int)item.Width, (int)item.Height);
using (Graphics g = Graphics.FromImage(m_MousePreview))
{
g.Clear(Color.FromArgb(60, Color.White));
using (SolidBrush solidBrush = new SolidBrush(this.ForeColor))
{
Pen pen = new Pen(BorderColor);
DrawRow(g, solidBrush, pen, 0, DataSource[i]);
}
}
m_BeforeDragPos = i;
m_MouseDownOffset = new PointF(m_MouseDownPos.X - item.X, m_MouseDownPos.Y - item.Y);
m_MouseIntent = MouseIntent.MouseDown;
return;
}
i++;
}
}
}
}
