/// <summary>
/// 单击更多符号按钮的上下文菜单后，将新符号加入到符号选择控件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void contextMenuStripMoreSymbol_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
var toolStripMenuItem = (ToolStripMenuItem)e.ClickedItem;
if (toolStripMenuItem.Name == StrAddMoreSymbol)//如果单击的是“添加更多符号”
{
var openfileDialog = new OpenFileDialog();
if (openfileDialog.ShowDialog() == DialogResult.OK) //弹出打开文件对话框
{
SymbologyControl.LoadStyleFile(openfileDialog.FileName);
}
}
else//如果是其它选项
{
if (toolStripMenuItem.Checked == false)
{
SymbologyControl.LoadStyleFile(toolStripMenuItem.Name);
}
else
{
SymbologyControl.RemoveFile(toolStripMenuItem.Name);
}
}
SymbologyControl.Refresh();
}
/// <summary>
/// 根据图层的几何类型，加载符号并确定显示哪些控件
/// </summary>
private void LoadStyle()
{
SymbologyControl.LoadStyleFile(GetStylesFilePath()); //加载ESRI.ServerStyle文件到SymbologyControl
var eType = GetSymbologyStyleClassType(((IFeatureLayer)Layer).FeatureClass.ShapeType); //根据图层的几何类型，获取需要加载的符号类别
SetFeatureClassStyle(eType); //设置好SymbologyControl的StyleClass
SetControlsVisible(eType); //设置好各控件的可见性(visible)
}
/// <summary>
/// 根据符号样式类别初始化SymbologyControl，如果图层已有符号，则把符号作为SymbologyControl的第一个符号并选中
/// </summary>
/// <param name="eSymbologyStyleClass">符号样式类别枚举（点/线/面/标注/文本/指北针/比例尺等样式类别）</param>
private void SetFeatureClassStyle(esriSymbologyStyleClass eSymbologyStyleClass)
{
SymbologyControl.StyleClass = eSymbologyStyleClass;//获取指定类别的符号样式库，即当前是点/线/面/标注/文本/指北针/比例尺等符号库的哪一个符号库
var symbologyStyleClass = SymbologyControl.GetStyleClass(eSymbologyStyleClass);
if (LegendClass != null)
{
StyleGalleryItem = new ServerStyleGalleryItem {
Name = "当前符号", Item = LegendClass.Symbol
};
symbologyStyleClass.AddItem(StyleGalleryItem, 0);
}
symbologyStyleClass.SelectItem(0);
}
