/// <summary>
/// 将文档视图区域中的坐标转换为控件客户区中的坐标
/// </summary>
/// <param name="x">视图坐标值</param>
/// <param name="y">视图坐标值</param>
/// <param name="mode">转换模式</param>
/// <returns>转换结果</returns>
public PointF ViewPointToClient(float x, float y, ViewTransformMode mode)
{
this.RefreshScaleTransform();
SimpleRectangleTransform item = null;
switch (mode)
{
case ViewTransformMode.Normal:
item = this.PagesTransform.GetBySourcePoint(x, y);
break;
case ViewTransformMode.Absolute:
item = this.PagesTransform.GetBySourcePointAbsolute(x, y);
break;
case Printing.ViewTransformMode.LimitedCurrentItem:
item = this.CurrentTransformItem;
break;
}
if (item != null)
{
return(item.TransformPointF(x, y));
}
else
{
return(new PointF(float.NaN, float.NaN));
}
}
/// <summary>
/// 将控件客户区域中的坐标转换为文档视图区中的坐标
/// </summary>
/// <param name="x">控件客户区坐标值</param>
/// <param name="y">控件客户区坐标值</param>
/// <param name="mode">转换模式</param>
/// <returns>转换结果</returns>
public PointF ClientPointToView(float x, float y, ViewTransformMode mode)
{
SimpleRectangleTransform item = GetTransformItem(x, y, mode);
if (item != null)
{
return(item.UnTransformPointF(x, y));
}
else
{
return(new PointF(float.NaN, float.NaN));
}
}
/// <summary>
/// 获得指定客户区坐标点所在的坐标转换对象
/// </summary>
/// <param name="clientX">客户区X坐标</param>
/// <param name="clientY">客户区Y坐标</param>
/// <param name="mode">转换模式</param>
/// <returns>获得的转换对象</returns>
public SimpleRectangleTransform GetTransformItem(
float clientX,
float clientY,
ViewTransformMode mode)
{
this.RefreshScaleTransform();
SimpleRectangleTransform item = null;
switch (mode)
{
case ViewTransformMode.Normal:
item = this.PagesTransform.GetByDescPoint(clientX, clientY);
break;
case ViewTransformMode.Absolute:
item = this.PagesTransform.GetByDescPointAbsolute(clientX, clientY);
break;
case Printing.ViewTransformMode.LimitedCurrentItem:
item = this.CurrentTransformItem;
break;
}
return(item);
}
