/// <summary>
/// 把一个mark按照网格的大小，分配到具体的网格中
/// </summary>
/// <param name="map">地图容器，需要该地图容器中已经装载基础图层</param>
/// <param name="mark"></param>
/// <param name="gridstep">单位为像素，网格大小（int）,网格设计为gridstep*gridstep</param>
/// <returns></returns>
protected bool calGrid(MapContainerBase map, ImyMark mark, double gridstep)
{
if (map == null)
{
MessageBox.Show("没有地图！");
return(false);
}
if (mark == null)
{
MessageBox.Show("没有标注！");
return(false);
}
if (mark.X < map.WinViewBound.XMin || mark.X > map.WinViewBound.XMax || mark.Y < map.WinViewBound.YMin || mark.Y > map.WinViewBound.YMax)
{
//MessageBox.Show("mark没在当前视图范围内");
return(false);
}
if (gridstep > map.CurShowScale * (map.WinViewBound.XMax - map.WinViewBound.XMin) || gridstep > map.CurShowScale * (map.WinViewBound.YMax - map.WinViewBound.YMin))
{
MessageBox.Show("网格步长太长");
return(false);
}
int col = new int();
int row = new int();
col = (int)Math.Floor((mark.X - map.WinViewBound.XMin) / (gridstep / map.CurShowScale));
row = (int)Math.Floor((mark.Y - map.WinViewBound.YMin) / (gridstep / map.CurShowScale));
if (temMarkArr[row][col] == null)
{
temMarkArr[row][col] = new List <ImyMark>();
}
temMarkArr[row][col].Add(mark);
return(true);
}
/// <summary>
/// 释放资源
/// </summary>
public virtual void Dispose()
{
FlickerStop();
if (m_mapContainer != null)
{
m_mapContainer.MouseMove -= new MouseEventHandler(OnMouseMove);
}
m_markLayer = null;
m_mapContainer = null;
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="markControl">要显示的标注点控件对象</param>
/// <param name="coordinateType">坐标类型（默认是屏幕坐标，如果是逻辑坐标，在绘图时会根据地图容器的LogicToScreen方法转换坐标）</param>
/// <param name="mLayer">标注图层对象，为“null”时会内部自动获取</param>
public MarkBase(FrameworkElement markControl, CoordinateType coordinateType = CoordinateType.Screen, MarkLayer mLayer = null)
{
if (mLayer != null)
{
m_markLayer = mLayer;
m_mapContainer = mLayer.MapContainer;
}
if (markControl != null)
{
this.m_markControl = markControl;
m_coordinateType = coordinateType;
this.m_markControl.Tag = this;
this.m_markControl.Loaded += new RoutedEventHandler(OnLoaded);
m_markControl.MouseLeftButtonDown += new MouseButtonEventHandler(OnMouseLeftButtonDown);
m_markControl.MouseLeftButtonUp += new MouseButtonEventHandler(OnMouseLeftButtonUp);
}
}
/// <summary>
/// 控件加载完毕
/// </summary>
/// <param name="sender">事件发送者</param>
/// <param name="e">事件数据源</param>
protected virtual void OnLoaded(object sender, RoutedEventArgs e)
{
this.m_markControl.Loaded -= new RoutedEventHandler(OnLoaded);
if (m_markControl != null && m_markControl.Parent is MarkLayer)
{
m_markLayer = m_markControl.Parent as MarkLayer;
m_mapContainer = m_markLayer.MapContainer;
if (m_mapContainer != null)
{
if (m_xLogicChange || m_yLogicChange)
{
double ml_x = Canvas.GetLeft(this.m_markLayer);
double ml_y = Canvas.GetTop(this.m_markLayer);
double w = double.IsNaN(m_markControl.Width) ? 0 : m_markControl.Width / 2; //m_markControl.ActualWidth / 2;//
double h = double.IsNaN(m_markControl.Height) ? 0 : m_markControl.Height / 2; //m_markControl.ActualHeight / 2;//
if (m_coordinateType == CoordinateType.Logic && m_mapContainer != null)
{
Point pnt = m_mapContainer.LogicToScreen(m_x, m_y);
if (!double.IsNaN(pnt.X) && !double.IsNaN(pnt.Y))
{
Canvas.SetLeft(m_markControl, pnt.X - w - ml_x);
Canvas.SetTop(m_markControl, pnt.Y - h - ml_y);
}
}
else
{
Canvas.SetLeft(m_markControl, m_x - w - ml_x);
Canvas.SetTop(m_markControl, m_y - h - ml_y);
}
}
if (m_enableDrag)
{
m_mapContainer.MouseMove += new MouseEventHandler(OnMouseMove);
}
else
{
m_mapContainer.MouseMove -= new MouseEventHandler(OnMouseMove);
}
}
}
m_yLogicChange = false;
m_xLogicChange = false;
}
