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TOCControl控件相当于ArcMap中左侧的目录树,需要与一个“伙伴控件”协同工作,可以是MapControl、PageLayoutControl、SceneControl或者GlobeControl。伙伴控件的设置可通过TOCControl属性对话框或用SetBuddyControl方法通过编程设置。fangfa
HitTest方法用来获取用户再TOCControl中点击的相关信息 public void HitTest(int X,int Y,ref esriTOCControlItem ItemType,ref IBasicMap BasicMap,ref ILayer,ref object Unk,ref object Data); ItemType:TOCControl中项的类型,如none、map、layer、heading、或者legend class。 BasicMap:IMap对象。 Layer:ILayer对象。 Unk:ILegendGroup(图例组,一个图层可以有多种符号化方案)对象。 Data:用户点击的图例组中某个图例的索引号(longInt);联合使用图例组Unk和某个索引号,可以获得用户点击的图例;图例的标题头索引为-1。 图层符号选择器的实现 调用ArcMap的符号选择器 此种方法的前提是电脑上必须安装ArcGIS Desktop,该方法写在axTOCControl控件的双击事件下: private void axTOCControl1_OnDoubleClick(object sender, ITOCControlEvents_OnDoubleClickEvent e) { esriTOCControlItem toccItem = esriTOCControlItem.esriTOCControlItemNone; ILayer layer = null; IBasicMap basicMap = null; object unk = null; object data = null;//定义HitTest函数所需的参数 if(e.button==1) { axTOCControl1.HitTest(e.x, e.y,ref toccItem, ref basicMap, ref layer, ref unk, ref data); { ESRI.ArcGIS.Carto.ILegendClass pLC = new LegendClassClass();//用户点击的图例 ESRI.ArcGIS.Carto.ILegendGroup PLG = new LegendGroupClass();//用户点击的图例组 if(unk is ILegendGroup) { PLG = (ILegendGroup)unk; }//获取图例组 pLC=PLG.Class[(int)data];//获取图例组中点击的具体图例 ISymbol pSym; pSym = pLC.Symbol; ISymbolSelector pSS = new SymbolSelectorClass();//实例化符号选择器 bool bOK = false; pSS.AddSymbol(pSym);//添加符号的目录 bOK = pSS.SelectSymbol(0); if(bOK) { pLC.Symbol = pSS.GetSymbolAt(0);//利用0索引检索选中的符号 } this.axMapControl1.ActiveView.Refresh(); this.axTOCControl1.Refresh(); } } } ISymbolSelector涉及到的方法说明: AddSymbol:决定符号选择器出现时显示的初始符号,例如双击的是面符号,出现的界面也是面界面。 GetSymbolAt:通过0索引检索符号。 SelectSymbol:选择符号,检查用户点击确定或取消的返回值。 效果图如下: 自定义符号选择器 如果并未安装arcgis desktop又想实现该功能,可以自定义界面来实现: 界面设计如下: 窗体及控件的属性设置见下表: [tr]控件NAMETEXT其它属性设置[/tr]FormGetSymbolByControlForm符号选择器 AxSymbologyControlaxSymbologyControl1–– groupBoxgroupBox1预览 groupBoxgroupBox2设置– pictureBoxpictureBox1Dock设置为fill Labell_color颜色– Labell_size大小- Labell_width宽度- Labell_angel角度- Labell_cofout外框颜色- buttonb_color-- buttonb_cofout-- numericUpDownn_size-- numericUpDownn_width-- numericUpDownn_angle-- buttonb_more更多符号- buttonb_color确定DialogResult属性设为OK buttonb_color取消- openFileDialogopenFileDialog1-Filter属性设置为:Styles 文件/*.ServerStyle ContextMenuStripContextMenur-- ColorDialogcolorDialog-- 该事件仍旧写在图例双击里: 代码的基本流程如下: 获取图层组和图层 初始化SymbologyControl的StyleClass 根据图层类型为SymbologyControl导入相应的符号样式文件 取得选定的符号 在GetSymbolByControlForm窗体中使用到的全局变量有: private IStyleGalleryItem pStyleGalleryItem;//每一个style文件由IStyleGalleryItems组成 private ILegendClass pLegendClass;//图例组 private ILayer pLayer;//具体图层 public ISymbol pSymbol;//符号 public Image pSymbolImage;//用于预览符号 bool contextMenuMoreSymbolInitiated = false; 通过改变GetSymbolByControlForm的参数实现两个窗口之间传值,代码如下: public GetSymbolByControlForm(ILegendClass legendClass,ILayer layer) { InitializeComponent(); this.pLegendClass = legendClass;//传入选择图例 this.pLayer = layer;//传入选中图层 } 初始化SymbologyControl的StyleClass,图层如果已有符号,则把符号添加到SymbologyControl中的第一个符号,并选中 private void SetFeatureClassStyle(esriSymbologyStyleClass symbologyStyleClass) { this.axSymbologyControl1.StyleClass = symbologyStyleClass; ISymbologyStyleClass PsymbologyStyleClass = this.axSymbologyControl1.GetStyleClass(symbologyStyleClass); if(this.pLegendClass!=null) { IStyleGalleryItem styleGalleryItem = new ServerStyleGalleryItem(); styleGalleryItem.Name = “当前符号”; styleGalleryItem.Item = pLegendClass.Symbol; PsymbologyStyleClass.AddItem(styleGalleryItem, 0); this.pStyleGalleryItem = styleGalleryItem; }/如果传入的图例不为空,则将其加入至styleGalleryItem中的第一个,默认选中 PsymbologyStyleClass.SelectItem(0);//传入图例为空,则默认选中第一个 } 载入ESRI.ServerStyle文件到SymbologyControl有两种方法:第一种方法是从注册表读取arcgis的安装路径,再使用axSymbologyControl1的LoadDesktopStyleFile()方法载入;也可以在axSymbologyControl1的属性中设置。 方法一: 读取注册表的函数(后文无用) private string ReadRegistry(string sKey) { RegistryKey localMachine = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32); string InstallDir = string.Empty; Microsoft.Win32.RegistryKey rk = Microsoft.Win32.Registry.CurrentUser.OpenSubKey(sKey, true); if (rk == null) return “”; return (string)rk.GetValue(InstallDir); } 2.直接设置(右键属性,Style Files,load~): 在GetSymbolByControlForm窗体的load函数中代码如下(该程序中我采用的是设置属性的方法) private void GetSymbolByControlForm_Load(object sender, EventArgs e) { string sInstall = ESRI.ArcGIS.RuntimeManager.ActiveRuntime.Path;//这也是获取安装路径的一种方法 // string sInstall = ReadRegistry(“SOFTWARE\ESRI\Desktop10.2”);//获取ArcGIS安装路径 // this.axSymbologyControl1.LoadDesktopStyleFile(sInstall + “\Styles\ESRI.ServerStyle”);//载入ESRI.ServerStyle文件到SymbologyControl IGeoFeatureLayer pGeoFeatureLayer = (IGeoFeatureLayer)pLayer; switch(((IFeatureLayer)pLayer).FeatureClass.ShapeType)//确定图层的类型,设置空间按的StyleClass,设置各控件的可见性 { case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint: this.SetFeatureClassStyle(esriSymbologyStyleClass.esriStyleClassMarkerSymbols);//如果是点要素 this.l_angel.Visible = true; this.n_angle.Visible = true; this.l_size.Visible = true; this.n_size.Visible = true; this.l_width.Visible = false; this.n_width.Visible = false; this.l_cofout.Visible = false; this.b_cofout.Visible = false; break; case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon: this.SetFeatureClassStyle(esriSymbologyStyleClass.esriStyleClassFillSymbols);//如果是多边形 this.l_angel.Visible = false; this.n_angle.Visible = false; this.l_size.Visible = false; this.n_size.Visible = false; this.l_width.Visible = true; this.n_width.Visible = true; this.l_cofout.Visible = true; this.b_cofout.Visible = true; break; case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline: this.SetFeatureClassStyle(esriSymbologyStyleClass.esriStyleClassLineSymbols);//如果是线要素 this.l_angel.Visible = false; this.n_angle.Visible = false; this.l_size.Visible = false; this.n_size.Visible = false; this.l_width.Visible = true; this.n_width.Visible = true; this.l_cofout.Visible = false; this.b_cofout.Visible = false; break; default: this.Close(); break; } 单击确定按钮: private void b_ok_Click(object sender, EventArgs e) { this.pSymbol = (ISymbol)pStyleGalleryItem.Item;//取得选定的符号 this.pSymbolImage = this.pictureBox1.Image;//更新预览图像 this.Close();//关闭窗体 } 单击取消按钮: private void b_no_Click(object sender, EventArgs e) { this.Close(); } 双击符号同单击确定按钮 private void axSymbologyControl1_OnDoubleClick(object sender, ISymbologyControlEvents_OnDoubleClickEvent e) { this.b_ok.PerformClick(); } 将选中的符号在picturebox中预览的函数为 private void axSymbologyControl1_OnStyleClassChanged(object sender, ISymbologyControlEvents_OnStyleClassChangedEvent e) { switch (((ISymbologyStyleClass)e.symbologyStyleClass).StyleClass) { case esriSymbologyStyleClass.esriStyleClassMarkerSymbols: this.l_angel.Visible = true; this.n_angle.Visible = true; this.l_size.Visible = true; this.n_size.Visible = true; this.l_width.Visible = false; this.n_width.Visible = false; this.l_cofout.Visible = false; this.b_cofout.Visible = false; break; case esriSymbologyStyleClass.esriStyleClassLineSymbols: this.l_angel.Visible = false; this.n_angle.Visible = false; this.l_size.Visible = false; this.n_size.Visible = false; this.l_width.Visible = true; this.n_width.Visible = true; this.l_cofout.Visible = true; this.b_cofout.Visible = false; break; case esriSymbologyStyleClass.esriStyleClassFillSymbols: this.l_angel.Visible = false; this.n_angle.Visible = false; this.l_size.Visible = false; this.n_size.Visible = false; this.l_width.Visible = true; this.n_width.Visible = true; this.l_cofout.Visible = true; this.b_cofout.Visible = true; break; default: this.Close(); break; } } 选中符号触发的事件 private void axSymbologyControl1_OnItemSelected(object sender, ISymbologyControlEvents_OnItemSelectedEvent e) { pStyleGalleryItem = (IStyleGalleryItem)e.styleGalleryItem; Color color; switch (this.axSymbologyControl1.StyleClass) { //点符号 case esriSymbologyStyleClass.esriStyleClassMarkerSymbols: color = this.ConvertIRgbColorToColor(((IMarkerSymbol)pStyleGalleryItem.Item).Color as IRgbColor); //设置点符号角度和大小初始值 this.n_angle.Value = (decimal)((IMarkerSymbol)this.pStyleGalleryItem.Item).Angle; this.n_size.Value = (decimal)((IMarkerSymbol)this.pStyleGalleryItem.Item).Size; break; //线符号 case esriSymbologyStyleClass.esriStyleClassLineSymbols: color = this.ConvertIRgbColorToColor(((ILineSymbol)pStyleGalleryItem.Item).Color as IRgbColor); //设置线宽初始值 this.n_width.Value = (decimal)((ILineSymbol)this.pStyleGalleryItem.Item).Width; break; //面符号 case esriSymbologyStyleClass.esriStyleClassFillSymbols: color = this.ConvertIRgbColorToColor(((IFillSymbol)pStyleGalleryItem.Item).Color as IRgbColor); this.b_cofout.BackColor = this.ConvertIRgbColorToColor(((IFillSymbol)pStyleGalleryItem.Item).Outline.Color as IRgbColor); //设置外框线宽度初始值 this.n_width.Value = (decimal)((IFillSymbol)this.pStyleGalleryItem.Item).Outline.Width; break; default: color = Color.Black; break; } //设置按钮背景色 this.b_color.BackColor = color; //预览符号 this.PreviewImage(); } 调整点符号的大小 private void n_size_ValueChanged(object sender, EventArgs e) { ((IMarkerSymbol)this.pStyleGalleryItem.Item).Size = (double)this.n_size .Value; this.PreviewImage(); } 调整点符号的角度 private void n_angle_ValueChanged(object sender, EventArgs e) { ((IMarkerSymbol)this.pStyleGalleryItem.Item).Angle = (double)this.n_angle .Value; this.PreviewImage(); } 调整线符号和面符号的宽度 private void n_width_ValueChanged(object sender, EventArgs e) { switch (this.axSymbologyControl1.StyleClass) { case esriSymbologyStyleClass.esriStyleClassLineSymbols: ((ILineSymbol)this.pStyleGalleryItem.Item).Width = Convert.ToDouble(this.n_width .Value); break; case esriSymbologyStyleClass.esriStyleClassFillSymbols: //取得面符号的轮廓线符号 ILineSymbol pLineSymbol = ((IFillSymbol)this.pStyleGalleryItem.Item).Outline; pLineSymbol.Width = Convert.ToDouble(this.n_width .Value); ((IFillSymbol)this.pStyleGalleryItem.Item).Outline = pLineSymbol; break; } this.PreviewImage(); } 在ArcGIS Engine中,颜色由IRgbColor接口实现,而在.NET框架中,颜色则由Color结构表示。故在调整颜色参数之前,我们必须完成以上两种不同颜色表示方式的转换。 /// 《summary》 /// 将ArcGIS Engine中的IRgbColor接口转换至.NET中的Color结构 /// 《/summary》 /// 《param name=“pRgbColor”》《/param》 /// 《returns》《/returns》 public Color ConvertIRgbColorToColor(IRgbColor pRgbColor) { return ColorTranslator.FromOle(pRgbColor.RGB); } /// 《summary》 /// .NET中的Color接口转换至于ArcGIS Engine中的IColor接口的函数: /// 《/summary》 /// 《param name=“color”》《/param》 /// 《returns》《/returns》 public IColor ConvertColorToIColor(Color color) { IColor pColor = new RgbColorClass(); pColor.RGB = color.B * 65536 + color.G * 256 + color.R; return pColor; } 选择颜色时,我们调用.NET的颜色对话框ColorDialog,选定颜色后,修改颜色按钮的背景色为选定的颜色,以方便预览。点击btnColor按钮,添加如下代码: private void b_color_Click(object sender, EventArgs e) { //调用系统颜色对话框 if (this.colorDialog.ShowDialog() == DialogResult.OK) { //将颜色按钮的背景颜色设置为用户选定的颜色 this.b_color.BackColor = this.colorDialog.Color; //设置符号颜色为用户选定的颜色 switch (this.axSymbologyControl1.StyleClass) { //点符号 case esriSymbologyStyleClass.esriStyleClassMarkerSymbols: ((IMarkerSymbol)this.pStyleGalleryItem.Item).Color = this.ConvertColorToIColor(this.colorDialog.Color); break; //线符号 case esriSymbologyStyleClass.esriStyleClassLineSymbols: ((ILineSymbol)this.pStyleGalleryItem.Item).Color = this.ConvertColorToIColor(this.colorDialog.Color); break; //面符号 case esriSymbologyStyleClass.esriStyleClassFillSymbols: ((IFillSymbol)this.pStyleGalleryItem.Item).Color = this.ConvertColorToIColor(this.colorDialog.Color); break; } //更新符号预览 this.PreviewImage(); } } 调整面符号的外框线颜色 private void b_cofout_Click(object sender, EventArgs e) { if (this.colorDialog.ShowDialog() == DialogResult.OK) { //取得面符号中的外框线符号 ILineSymbol pLineSymbol = ((IFillSymbol)this.pStyleGalleryItem.Item).Outline; //设置外框线颜色 pLineSymbol.Color = this.ConvertColorToIColor(this.colorDialog.Color); //重新设置面符号中的外框线符号 ((IFillSymbol)this.pStyleGalleryItem.Item).Outline = pLineSymbol; //设置按钮背景颜色 this.b_cofout .BackColor = this.colorDialog.Color; //更新符号预览 this.PreviewImage(); } } 添加更多符号 private void b_more_Click(object sender, EventArgs e) { if (this.contextMenuMoreSymbolInitiated == false) { string sInstall = ReadRegistry(“SOFTWARE\ESRI\Desktop10.2”); string path = System.IO.Path.Combine(sInstall, “Styles”); //取得菜单项数量 string[] styleNames = System.IO.Directory.GetFiles(path, “*.ServerStyle”); ToolStripMenuItem[] symbolContextMenuItem = new ToolStripMenuItem[styleNames.Length + 1]; //循环添加其它符号菜单项到菜单 for (int i = 0; i 《 styleNames.Length; i++) { symbolContextMenuItem[i] = new ToolStripMenuItem(); symbolContextMenuItem[i].CheckOnClick = true; symbolContextMenuItem[i].Text = System.IO.Path.GetFileNameWithoutExtension(styleNames[i]); if (symbolContextMenuItem[i].Text == “ESRI”) { symbolContextMenuItem[i].Checked = true; } symbolContextMenuItem[i].Name = styleNames[i]; } //添加“更多符号”菜单项到菜单最后一项 symbolContextMenuItem[styleNames.Length] = new ToolStripMenuItem(); symbolContextMenuItem[styleNames.Length].Text = “添加符号”; symbolContextMenuItem[styleNames.Length].Name = “AddMoreSymbol”; //添加所有的菜单项到菜单 this.ContextMenu.Items.AddRange(symbolContextMenuItem); this.contextMenuMoreSymbolInitiated = true; } //显示菜单 this.ContextMenu.Show(this.b_more.Location); } 当单击某一菜单项时响应ItemClicked事件,将选中的ServerStyle文件导入到SymbologyControl中并刷新。当用户单击“添加符号”菜单项时,弹出打开文件对话框,供用户选择其它的ServerStyle文件。代码如下: private void ContextMenu_ItemClicked(object sender, ToolStripItemClickedEventArgs e) { ToolStripMenuItem pToolStripMenuItem = (ToolStripMenuItem)e.ClickedItem; //如果单击的是“添加符号” if (pToolStripMenuItem.Name == “AddMoreSymbol”) { //弹出打开文件对话框 if (this.openFileDialog1.ShowDialog() == DialogResult.OK) { //导入style file到SymbologyControl this.axSymbologyControl1.LoadStyleFile(this.openFileDialog1.FileName); //刷新axSymbologyControl控件 this.axSymbologyControl1.Refresh(); } } else//如果是其它选项 { if (pToolStripMenuItem.Checked == false) { this.axSymbologyControl1.LoadStyleFile(pToolStripMenuItem.Name); this.axSymbologyControl1.Refresh(); } else { this.axSymbologyControl1.RemoveFile(pToolStripMenuItem.Name); this.axSymbologyControl1.Refresh(); } } } 至此,自定义的符号选择器已经可以使用辣,在代码调试过程中出现过很多次bug,但是很遗憾没能及时记录下来。 |
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