/// <summary>
/// 鼠标抬起时
/// </summary>
/// <param name="e"></param>
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (m_commandType == eCommandType.pan) //如果是移动画布
{
m_panOffset.X += m_dragOffset.X;
m_panOffset.Y += m_dragOffset.Y;
m_dragOffset = new PointF(0, 0);
}
List <IDrawObject> hitlist = null;
Rectangle screenSelRect = Rectangle.Empty;
if (m_selection != null) //如果被选中的区域不为空
{
screenSelRect = m_selection.ScreenRect();
RectangleF selectionRect = m_selection.Selection(m_canvaswrapper);
if (selectionRect != RectangleF.Empty)
{
// is any selection rectangle. use it for selection选中是任意选择矩形。使用它进行选择
hitlist = m_model.GetHitObjects(m_canvaswrapper, selectionRect, m_selection.AnyPoint());
DoInvalidate(true);
}
else
{
// else use mouse point否则使用光标指向的点
UnitPoint mousepoint = ToUnit(new PointF(e.X, e.Y));
hitlist = m_model.GetHitObjects(m_canvaswrapper, mousepoint);
}
m_selection = null;
}
if (m_commandType == eCommandType.select) //如果是选中
{
if (hitlist != null)
{
HandleSelection(hitlist);
}
}
if (m_commandType == eCommandType.edit && m_editTool != null) //如果是编辑
{
UnitPoint mousepoint = ToUnit(m_mousedownPoint);
if (m_snappoint != null)
{
mousepoint = m_snappoint.SnapPoint;
}
if (screenSelRect != Rectangle.Empty)
{
m_editTool.SetHitObjects(mousepoint, hitlist);
}
m_editTool.OnMouseUp(m_canvaswrapper, mousepoint, m_snappoint);
}
if (m_commandType == eCommandType.draw && m_newObject != null) //如果是绘制且绘图工具不为
{
UnitPoint mousepoint = ToUnit(m_mousedownPoint);
if (m_snappoint != null)
{
mousepoint = m_snappoint.SnapPoint;
}
m_newObject.OnMouseUp(m_canvaswrapper, mousepoint, m_snappoint);
}
}
/// <summary>
/// 鼠标弹起
/// </summary>
/// <param name="e"></param>
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (m_commandType == eCommandType.pan)
{
m_panOffset.X += m_dragOffset.X;
m_panOffset.Y += m_dragOffset.Y;
m_dragOffset = new PointF(0, 0);
}
List <IDrawObject> hitlist = null;
Rectangle screenSelRect = Rectangle.Empty;
if (m_selection != null)
{
screenSelRect = m_selection.ScreenRect();
RectangleF selectionRect = m_selection.Selection(m_canvaswrapper);
if (selectionRect != RectangleF.Empty)
{
//是否选择矩形用它来选择 is any selection rectangle. use it for selection
hitlist = m_model.GetHitObjects(m_canvaswrapper, selectionRect, m_selection.AnyPoint());
DoInvalidate(true);
}
else
{
//否则使用鼠标点 else use mouse point
UnitPoint mousepoint = ToUnit(new PointF(e.X, e.Y));
hitlist = m_model.GetHitObjects(m_canvaswrapper, mousepoint);
}
m_selection = null;
}
//选择命令
if (m_commandType == eCommandType.select)
{
if (hitlist != null)
{
HandleSelection(hitlist);
}
}
//编辑命令
if (m_commandType == eCommandType.edit && m_editTool != null)
{
UnitPoint mousepoint = ToUnit(m_mousedownPoint);
if (m_snappoint != null)
{
mousepoint = m_snappoint.SnapPoint;
}
if (screenSelRect != Rectangle.Empty)
{
m_editTool.SetHitObjects(mousepoint, hitlist);
}
m_editTool.OnMouseUp(m_canvaswrapper, mousepoint, m_snappoint);
}
//绘制命令
if (m_commandType == eCommandType.draw && m_newObject != null)
{
UnitPoint mousepoint = ToUnit(m_mousedownPoint);
if (m_snappoint != null)
{
mousepoint = m_snappoint.SnapPoint;
}
m_newObject.OnMouseUp(m_canvaswrapper, mousepoint, m_snappoint);
}
}