【035】自建符号Symbol选择对话框

第一步:建立独立的 Windows 窗体:命名为:SymbologyFrmLee

 

1. 运行效果如下所示:

【035】自建符号Symbol选择对话框_第1张图片

 

2. 全局参数:

esriSymbologyStyleClass pStyleClass;  //获取显示的为点类、线类还是填充类等的,赋值给 symbologyControl 控件,然后就显示这一类符号
public IStyleGalleryItem pStyleGalleryItem;  //获取选择的项
ILegendClass pLegendClass;  //获取传递进来的图例
ILayer pLayer;
bool contextMenuMoreSymbolInitiated = false;  //判断右键菜单是否已经初始化了

 

3. 给窗体添加参数:

public SymbologyFrmLee(ILegendClass tempLegendClass, ILayer tempLayer)
{
    InitializeComponent();
    pLegendClass = tempLegendClass;  //通过点击 toccontrol 时候可以获得要素类的 LegendClass!
    pLayer = tempLayer;  //点击的图层
}

 

4. 窗体加载事件:

private void SymbologyFrm_Load(object sender, EventArgs e)
{
    switch(((IFeatureLayer)pLayer).FeatureClass.ShapeType)  //判断图层中要素类的图形类型,不同类型显示的调节值的控件不同
    {
        case esriGeometryType.esriGeometryPoint:  //点
            pStyleClass = esriSymbologyStyleClass.esriStyleClassMarkerSymbols;
            lbColor.Visible = true;
            lbWidth.Visible = true;
            lbWidth.Text = "符号大小";
            lbAngle.Visible = true;
            btColor.Visible = true;
            nudWidth.Visible = true;
            cbColor.Visible = true;
            nudAngle.Visible = true;
            break;
        case esriGeometryType.esriGeometryPolyline:  //线
            pStyleClass = esriSymbologyStyleClass.esriStyleClassLineSymbols;
            lbColor.Visible = true;
            lbColor.Location = System.Drawing.Point.Add(lbColor.Location, new Size(0, 12));
            lbWidth.Visible = true;
            lbWidth.Location = System.Drawing.Point.Add(lbWidth.Location, new Size(0, 24));
            lbWidth.Text = "线符号粗细";
            btColor.Visible = true;
            cbColor.Visible = true;
            btColor.Location = System.Drawing.Point.Add(btColor.Location, new Size(0, 12));
            cbColor.Location = System.Drawing.Point.Add(cbColor.Location, new Size(0, 12));
            nudWidth.Visible = true;
            nudWidth.Location = System.Drawing.Point.Add(nudWidth.Location, new Size(0, 24));
            break;
        case esriGeometryType.esriGeometryPolygon:  //面
            pStyleClass = esriSymbologyStyleClass.esriStyleClassFillSymbols;
            lbColor.Visible = true;
            lbWidth.Visible = true;
            lbWidth.Text = "框线宽度";
            lbOutlineColor.Visible = true;
            btColor.Visible = true;
            btOutlineColor.Visible = true;
            nudWidth.Visible = true;
            cbColor.Visible = true;
            cbOutlineColor.Visible = true;
            break;
        default:
            this.Close();
            break;
    }
    string strInstall = @"C:\Program Files (x86)\ArcGIS";  //安装目录,10中可以用函数获得 RuntimeManager 可以获取!
                            //ESRI.ArcGIS.RuntimeManager.ActiveRuntime.Path 可以获得 Engine 的安装目录
string stylePath = strInstall + @"\Styles\ESRI.ServerStyle";  //获取 ESRI.ServerStyle 文件 axSymbologyControl1.LoadStyleFile(stylePath);  //加载此文件 axSymbologyControl1.StyleClass = pStyleClass;  //将上面获得的 pStyleClass 赋值过去,显示点、线还是面,由此决定! IStyleGalleryItem pCurrentStyleGalleryItem = new StyleGalleryItem();  //新建当前符号的实例 pCurrentStyleGalleryItem.Name = "当前符号"; pCurrentStyleGalleryItem.Item = pLegendClass.Symbol;  //将当前的图例 symbol 赋值过去 ISymbologyStyleClass pSymbologyStyleClass = axSymbologyControl1.GetStyleClass(axSymbologyControl1.StyleClass);  //QI,加入这个新建项 pSymbologyStyleClass.AddItem(pCurrentStyleGalleryItem, 0); pSymbologyStyleClass.SelectItem(0);   //同时选中 }

 

5. 选择项的时候触发:

private void axSymbologyControl1_OnItemSelected(object sender, ISymbologyControlEvents_OnItemSelectedEvent e)
{
    pStyleGalleryItem = e.styleGalleryItem as IStyleGalleryItem;  //获取选择项
    PreviewPicture();  //在图片框中显示

    if (((IFeatureLayer)pLayer).FeatureClass.ShapeType == esriGeometryType.esriGeometryPoint)  //点,将属性传递到调节的控件上
    {
        IRgbColor pColor = ((IMarkerSymbol)pStyleGalleryItem.Item).Color as IRgbColor;  
        btColor.BackColor = Color.FromArgb(pColor.Red, pColor.Green, pColor.Blue);      //赋值颜色
        nudAngle.Value = Convert.ToDecimal(((IMarkerSymbol)pStyleGalleryItem.Item).Angle);  //赋值角度
        nudWidth.Value = Convert.ToDecimal(((IMarkerSymbol)pStyleGalleryItem.Item).Size);  //赋值大小
    }

    if (((IFeatureLayer)pLayer).FeatureClass.ShapeType == esriGeometryType.esriGeometryPolyline)  //线
    {
        IRgbColor pColor = ((ILineSymbol)pStyleGalleryItem.Item).Color as IRgbColor;      
        btColor.BackColor = Color.FromArgb(pColor.Red, pColor.Green, pColor.Blue);      //赋值线的颜色
        nudWidth.Value = Convert.ToDecimal(((ILineSymbol)pStyleGalleryItem.Item).Width);  //赋值线的宽度
    }

    if (((IFeatureLayer)pLayer).FeatureClass.ShapeType == esriGeometryType.esriGeometryPolygon)  //面
    {
        IRgbColor pColor = ((IFillSymbol)pStyleGalleryItem.Item).Color as IRgbColor;
        btColor.BackColor = Color.FromArgb(pColor.Red, pColor.Green, pColor.Blue);        //赋值填充的颜色
        nudWidth.Value = Convert.ToDecimal(((IFillSymbol)pStyleGalleryItem.Item).Outline.Width);  //赋值边框宽度
        pColor = ((IFillSymbol)pStyleGalleryItem.Item).Outline.Color as IRgbColor;
        btOutlineColor.BackColor = Color.FromArgb(pColor.Red, pColor.Green, pColor.Blue);    //赋值边框颜色
    }
}

 

6. 将 pStyleGalleryItem 反映到 picture 上的方法:

private void PreviewPicture()
{
    ISymbologyStyleClass pSymbologyStyle = axSymbologyControl1.GetStyleClass(axSymbologyControl1.StyleClass);  //因为其有方法 PreviewStyle
    stdole.IPictureDisp picture = pSymbologyStyle.PreviewItem(pStyleGalleryItem, pictureBox1.Width, pictureBox1.Height);  //建立实例
    Image image = Image.FromHbitmap(new IntPtr(picture.Handle));  //转成 C# 支持的 Image 实例
    pictureBox1.Image = image;  //赋值过去
}

 

▲ 将控件的操作操作反映到 picture 上:

 

7. 点、线、面填充颜色传递:

IRgbColor pColor = new RgbColor();    //颜色实例
pColor.RGB = 255;
tagRECT pTag = new tagRECT();    //用于下面显示 ColorPalette 的位置
pTag.left = btColor.PointToScreen(System.Drawing.Point.Empty).X;            //按钮控件的左边全局横坐标
pTag.bottom = btColor.PointToScreen(System.Drawing.Point.Empty).Y + btColor.Height;  //按钮控件的下边全局纵坐标
IColorPalette pColorPalette = new ColorPalette();
pColorPalette.TrackPopupMenu(ref pTag, pColor, false, 0);     //显示 ColorPalette
pColor = pColorPalette.Color as IRgbColor;          //获取选中的颜色
Color color = Color.FromArgb(pColor.Red, pColor.Green, pColor.Blue);  //将颜色转为 C# 颜色
btColor.BackColor = color;

switch (((IFeatureLayer)pLayer).FeatureClass.ShapeType)  //判断几何体样式
{
    case esriGeometryType.esriGeometryPoint:          //点
        ((IMarkerSymbol)pStyleGalleryItem.Item).Color = pColor;  //转为 IMarkerSymbol,注意改好后要在图片上显示
        PreviewPicture();
        break;
    case esriGeometryType.esriGeometryPolyline:        //线
        ((ILineSymbol)pStyleGalleryItem.Item).Color = pColor;  //转为 ILineSymbol
        PreviewPicture();
        break;
    case esriGeometryType.esriGeometryPolygon:      //面
        ((IFillSymbol)pStyleGalleryItem.Item).Color = pColor;  //转为 IFillSymbol
        PreviewPicture();
        break;
    default:
        break;
}

 

8. 点的大小、线的宽度、填充边框宽度传递:

switch (((IFeatureLayer)pLayer).FeatureClass.ShapeType)
{
    case esriGeometryType.esriGeometryPoint:
        ((IMarkerSymbol)pStyleGalleryItem.Item).Size = Convert.ToDouble(nudWidth.Value);  //点的大小,注意改后要在图片上显示
        PreviewPicture();
        break;
    case esriGeometryType.esriGeometryPolyline:
        ((ILineSymbol)pStyleGalleryItem.Item).Width = Convert.ToDouble(nudWidth.Value);  //线的宽度
        PreviewPicture();
        break;
    case esriGeometryType.esriGeometryPolygon:
        ILineSymbol pLineSymbol = ((IFillSymbol)pStyleGalleryItem.Item).Outline;  //实例化一个 linesymbol 然后赋值过去,直接赋值的话没有反应
        pLineSymbol.Width = Convert.ToDouble(nudWidth.Value);        //赋值
        ((IFillSymbol)pStyleGalleryItem.Item).Outline = pLineSymbol;      //在赋值给填充的外框
        PreviewPicture();
        break;
    default:
        break;
}

 

9. 填充外边框颜色的传递:

IRgbColor pColor = new RgbColor();
pColor.RGB = 255;
tagRECT ptagRECT = new tagRECT();
ptagRECT.left = btOutlineColor.PointToScreen(System.Drawing.Point.Empty).X;
ptagRECT.bottom = btOutlineColor.PointToScreen(System.Drawing.Point.Empty).Y + btOutlineColor.Height;
IColorPalette pColorPalette = new ColorPalette();
pColorPalette.TrackPopupMenu(ref ptagRECT, pColor, false, 0);
pColor = pColorPalette.Color as IRgbColor;
btOutlineColor.BackColor = Color.FromArgb(pColor.Red, pColor.Green, pColor.Blue);
ILineSymbol pLineSymbol = ((IFillSymbol)pStyleGalleryItem.Item).Outline;
pLineSymbol.Color = pColor;
((IFillSymbol)pStyleGalleryItem.Item).Outline = pLineSymbol;
PreviewPicture();

 

颜色显示效果如下:

【035】自建符号Symbol选择对话框_第2张图片

 

10. 点的角度实现如下:

((IMarkerSymbol)pStyleGalleryItem.Item).Angle = Convert.ToDouble(nudAngle.Value);
PreviewPicture();

 

11. 更多符号的实现:

private void btMore_Click(object sender, EventArgs e)
{
    if (contextMenuMoreSymbolInitiated == false)        //如果没有初始化,则首先初始化
    {
        string stylePath = @"C:\Program Files (x86)\ArcGIS\Styles";    //获取 styles 文件夹,并将里面 *.ServerStyle 文件赋值到数组中,用于加载
        string[] strFiles = Directory.GetFiles(stylePath, "*.ServerStyle");
        ToolStripMenuItem[] symbolContextMenuItem = new ToolStripMenuItem[strFiles.Length + 1];  //定义菜单项,最后一个为另类
        for (int i = 0; i < strFiles.Length; i++)
        {
            symbolContextMenuItem[i] = new ToolStripMenuItem();    //首先新建,然后允许选中时是否有 checked 变化
            symbolContextMenuItem[i].CheckOnClick = true;
            symbolContextMenuItem[i].Text = System.IO.Path.GetFileNameWithoutExtension(strFiles[i]);  //将名字赋值给 text 属性,完整地址赋值给 name,便于加载
            if (symbolContextMenuItem[i].Text == "ESRI")
                symbolContextMenuItem[i].Checked = true;      //默认是加载的这个文件,所以默认选中
            symbolContextMenuItem[i].Name = strFiles[i];
        }
        symbolContextMenuItem[strFiles.Length] = new ToolStripMenuItem();  //最后一个菜单项
        symbolContextMenuItem[strFiles.Length].Text = "更多工具";
        symbolContextMenuItem[strFiles.Length].Name = "AddMoreSymbol";
contextMenuStrip1.Items.AddRange(symbolContextMenuItem);    //将菜单项添加到右键菜单中 contextMenuMoreSymbolInitiated
= true;              //将此值赋值为 true,以便之后不用执行这一部分了 } contextMenuStrip1.Show(btMore.Location);    //弹出右键菜单 }

 

12. 点击右键菜单:

private void contextMenuStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
    ToolStripMenuItem pToolStripMenuItem = e.ClickedItem as ToolStripMenuItem;  //首先获取点击项
    if (pToolStripMenuItem.Name == "AddMoreSymbol")              //最后一项,打开对话框,浏览想要打开的文件
    {
        if (openFileDialog1.ShowDialog() == DialogResult.OK)
        {
            axSymbologyControl1.LoadStyleFile(openFileDialog1.FileName);
            axSymbologyControl1.Refresh();
        }
    }
    else                                    //其他项
    {
        if (pToolStripMenuItem.Checked == false)                //之前若是没有选中的,则加载,同时也就选中了
        {
            axSymbologyControl1.LoadStyleFile(pToolStripMenuItem.Name);
            axSymbologyControl1.Refresh();
        }
        else                                  //之前若是选中的,现在就要删除,同时也就不再选中了
        {
            axSymbologyControl1.RemoveFile(pToolStripMenuItem.Name);
            axSymbologyControl1.Refresh();
        }
    }
}

 

第二步在主窗体调用此符号窗体:

private void axTOCControl1_OnMouseDown(object sender, ITOCControlEvents_OnMouseDownEvent e)
{
    esriTOCControlItem item = esriTOCControlItem.esriTOCControlItemNone;
    IBasicMap map = null;
    ILayer layer = null;
    object other = null;
    object index = null;

    axTOCControl1.HitTest(e.x, e.y, ref item, ref map, ref layer, ref other, ref index);  //获取足够的图层和图例信息
if (e.button == 1)                        //点击左键的时候触发 { ILegendClass pLegend = new LegendClassClass();        //首先获取图例,然后赋值过去 ISymbol symbol = null;                    //新建 symbol,从符号窗体中最后就是获得这个东西 if (other is ILegendGroup && (int)index != -1) pLegend = ((ILegendGroup)other).get_Class((int)index) as ILegendClass;  //给上面建的图例类赋值 SymbologyFrmLee frm = new SymbologyFrmLee(pLegend, layer);      //新建符号窗体,并将该赋值的赋值过去 frm.ShowDialog();                             //显示对话框,之后就获得了 symbol 了 symbol = frm.pStyleGalleryItem.Item as ISymbol;              //调用窗体的 public 字段 pLegend.Symbol = symbol;                        //将 symbol 赋值给图例 axMapControl1.Refresh(esriViewDrawPhase.esriViewGeography, null, null);  //刷新地图 } }

 

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