使用XAML在WPF项目中承载ArcGIS Engine地图控件开发
原文 http://blog.csdn.net/flexmapserver/article/details/5868882
用Windows Form进行ArcGIS Engine二次开发时常见的形式,当然也可以用WPF来进行ArcEngine的二次开发。
由于WPF很方便承载Windows Form控件,而Map Control、Toolbar Control、TOC Control等都是.NET 控件,当然也可以用XAML来承载ArcEngine的这些控件来开发了。
下面简单记述开发步骤:
1.打开VS2008,创建WPF应用程序;
2.添加程序集引用:
- ESRI.ArcGIS.AxControls:包含地图控件
- ESRI.ArcGIS.System:包含ArcGIS Engine license初始化类
- WindowsFormsIntegration:包含WindowsFormsHost,用来在WPF中承载Windows控件
- System.Windows.Forms
3.在XAML中添加名称空间:
xmlns:controlHost="clr-namespace:System.Windows.Forms.Integration;assembly=WindowsFormsIntegration"
添加初始化事件Loaded="Window_Loaded"
4.在XAML中添加Map Control、Toolbar Control、TOC Control控件,最后你的XAML代码看起来是这样:
- <Window x:Class="WPFMapViewer.MapWindow"
- xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
- xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
- Title="MapViewer Hosted in WPF" Height="433.29" Width="559.944" Loaded="Window_Loaded" Background="Beige"
- MaxHeight="768" MaxWidth="1024"
- xmlns:my="clr-namespace:System.Windows.Forms.Integration;assembly=WindowsFormsIntegration">
- <Grid>
- <my:WindowsFormsHost Name="mapHost" Margin="174,30,0,22" />
- <my:WindowsFormsHost Margin="0,30,0,22" Name="tocHost" HorizontalAlignment="Left" Width="173" />
- <my:WindowsFormsHost Height="30" Name="toolbarHost" VerticalAlignment="Top" Margin="0,0,252,0" />
- <Button Content="MyZoomInBoxTool" x:Name="MyZoomInBoxTool" Click="MyZoomInBox_Click" HorizontalAlignment="Right" Width="120" Height="30" VerticalAlignment="Top" Panel.ZIndex="1" Margin="0,0,7.056,0"></Button>
- <TextBlock Height="23.75" VerticalAlignment="Bottom" Name="textBlock1" Margin="0,0,7.056,0">Ready</TextBlock>
- <Button x:Name="DrawCircleTool" Height="23" HorizontalAlignment="Right" Margin="0,5,153,0" VerticalAlignment="Top" Width="75" Click="DrawCircleTool_Click">DrawCircle</Button>
- </Grid>
- </Window>
5.编辑XAML的C#代码,添加Map Control、Toolbar Control、TOC Control三个变量,即
AxMapControl mapControl;
AxToolbarControl toolbarControl;
AxTOCControl tocControl;
并在初始化窗口的下面添加对这三个控件变量的创建,即
- private void CreateEngineControls ()
- {
- mapControl = new AxMapControl ();
- mapHost.Child = mapControl;
- toolbarControl = new AxToolbarControl ();
- toolbarHost.Child = toolbarControl;
- tocControl = new AxTOCControl ();
- tocHost.Child = tocControl;
- }
6.在Window_Loaded事件中加载上述三个控件,如下:
- private void LoadMap ()
- {
- //将TOC控件、Toolbar控件和地图控件绑定
- tocControl.SetBuddyControl (mapControl);
- toolbarControl.SetBuddyControl (mapControl);
- //添加放大、缩小、打开地图文档等命令到Toolbar工具栏
- toolbarControl.AddItem ("esriControls.ControlsOpenDocCommand");
- toolbarControl.AddItem ("esriControls.ControlsAddDataCommand");
- toolbarControl.AddItem ("esriControls.ControlsSaveAsDocCommand");
- toolbarControl.AddItem ("esriControls.ControlsMapNavigationToolbar");
- toolbarControl.AddItem ("esriControls.ControlsMapIdentifyTool");
- //设置工具栏的外观
- toolbarControl.BackColor =Color.FromArgb (245, 245, 220);
- }
7.将上述代码连起来,你的代码看起来是这样:
- public partial class MapWindow: Window
- {
- AxMapControl mapControl;
- AxToolbarControl toolbarControl;
- AxTOCControl tocControl;
- public MapWindow ()
- {
- InitializeComponent ();
- CreateEngineControls ();
- }
- private void CreateEngineControls ()
- {
- mapControl = new AxMapControl ();
- mapHost.Child = mapControl;
- toolbarControl = new AxToolbarControl ();
- toolbarHost.Child = toolbarControl;
- tocControl = new AxTOCControl ();
- tocHost.Child = tocControl;
- }
- private void LoadMap ()
- {
- //将TOC控件、Toolbar控件和地图控件绑定
- tocControl.SetBuddyControl (mapControl);
- toolbarControl.SetBuddyControl (mapControl);
- //添加放大、缩小、打开地图文档等命令到Toolbar工具栏
- toolbarControl.AddItem ("esriControls.ControlsOpenDocCommand");
- toolbarControl.AddItem ("esriControls.ControlsAddDataCommand");
- toolbarControl.AddItem ("esriControls.ControlsSaveAsDocCommand");
- toolbarControl.AddItem ("esriControls.ControlsMapNavigationToolbar");
- toolbarControl.AddItem ("esriControls.ControlsMapIdentifyTool");
- //设置工具栏的外观
- toolbarControl.BackColor =Color.FromArgb (245, 245, 220);
- }
- private void Window_Loaded (object sender, RoutedEventArgs e)
- {
- LoadMap ();
- }
- }
8.ArcEngine的二次开发当然要License啦,在Windwos From的开发中可以用License控件来进行许可证的初始化,在这里就只能用代码在App.XAML.cs中初始化License了。
代码如下:
- public partial class App: Application
- {
- public App ()
- {
- InitializeEngineLicense ();
- }
- private void InitializeEngineLicense ()
- {
- AoInitialize aoi = new AoInitializeClass ();
- esriLicenseProductCode productCode = esriLicenseProductCode.esriLicenseProductCodeEngine;
- if (aoi.IsProductCodeAvailable (productCode) == esriLicenseStatus.esriLicenseAvailable)
- {
- aoi.Initialize (productCode);
- }
- }
- }
9.在WPF中添加自定义工具,如在视图上画圆形的工具,添加DrawCircleToolClass类,如下:
- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Text;
- using System.Runtime.InteropServices;
- using ESRI.ArcGIS.ADF.CATIDs;
- using ESRI.ArcGIS.Controls;
- using ESRI.ArcGIS.Geometry;
- using ESRI.ArcGIS.Display;
- using ESRI.ArcGIS.Carto;
- using ESRI.ArcGIS.ADF.BaseClasses;
- namespace WPFMapViewer.MapTool
- {
- [ClassInterface(ClassInterfaceType.None)]
- [Guid("48BD64CD-3369-47FC-8EC5-94A5B644E8DA")]
- public class DrawCircleToolClass : BaseTool
- {
- [ComRegisterFunction()]
- [ComVisible(false)]
- static void RegisterFunction(Type registerType)
- {
- ArcGISCategoryRegistration(registerType);
- }
- [ComUnregisterFunction()]
- [ComVisible(false)]
- static void UnregisterFunction(Type registerType)
- {
- ArcGISCategoryUnregistration(registerType);
- }
- private static void ArcGISCategoryRegistration(Type registerType)
- {
- string regKey = string.Format("HKEY_CLASSES_ROOT//CLSID//{{{0}}}", registerType.GUID);
- ControlsCommands.Register(regKey);
- }
- private static void ArcGISCategoryUnregistration(Type registerType)
- {
- string regKey = string.Format("HKEY_CLASSES_ROOT//CLSID//{{{0}}}", registerType.GUID);
- ControlsCommands.Unregister(regKey);
- }
- private IHookHelper m_hookHelper;
- private INewCircleFeedback m_feedBack;
- private IPoint m_point;
- private Boolean m_isMouseDown;
- private IDisplayFeedback displayFeedback = null;
- public DrawCircleToolClass()
- {
- m_hookHelper = new HookHelperClass();
- }
- ~DrawCircleToolClass()
- {
- m_hookHelper = null;
- }
- public override void OnCreate(object hook)
- {
- m_hookHelper.Hook = hook;
- }
- public override bool Enabled
- {
- get
- {
- if (m_hookHelper.FocusMap == null) return false;
- return (m_hookHelper.FocusMap.LayerCount > 0);
- }
- }
- public override void OnMouseDown(int Button, int Shift, int X, int Y)
- {
- //Create a point in map coordinates
- IActiveView pActiveView = (IActiveView)m_hookHelper.FocusMap;
- m_point = pActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
- displayFeedback = new NewCircleFeedbackClass();
- m_isMouseDown = true;
- }
- public override void OnMouseMove(int button, int shift, int x, int y)
- {
- if (!m_isMouseDown) return;
- IActiveView pActiveView = (IActiveView)m_hookHelper.FocusMap;
- if (m_feedBack == null)
- {
- m_feedBack = new NewCircleFeedbackClass();
- m_feedBack.Display = pActiveView.ScreenDisplay;
- m_feedBack.Start(m_point);
- }
- m_feedBack.MoveTo(pActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(x, y));
- }
- public override void OnMouseUp(int button, int shift, int x, int y)
- {
- if (!m_isMouseDown) return;
- IActiveView pActiveView = (IActiveView)m_hookHelper.FocusMap;
- ICircularArc pCircle;
- pCircle = m_feedBack.Stop();
- if (pCircle.Radius < 0.5)
- {
- m_feedBack = null;
- m_isMouseDown = false;
- }
- if (pCircle != null)
- {
- ISegmentCollection segCollection = new PolygonClass() as ISegmentCollection;
- object o = Type.Missing;
- segCollection.AddSegment(pCircle as ISegment, ref o, ref o);
- IPolygon polygon = segCollection as IPolygon;
- IRgbColor rgbColor = new RgbColorClass();
- rgbColor.Red = 255;
- IColor color = rgbColor;
- ISimpleFillSymbol simpleFillSymbol = new SimpleFillSymbolClass();
- simpleFillSymbol.Color = color;
- IElement element;
- IPolygonElement polygonElement = new PolygonElementClass();
- element = polygonElement as IElement;
- IFillShapeElement fillShapeElement = polygonElement as IFillShapeElement;
- fillShapeElement.Symbol = simpleFillSymbol;
- element.Geometry = polygon as IGeometry;
- IGraphicsContainer pGraphicContainer = pActiveView.GraphicsContainer;
- pGraphicContainer.AddElement(element, 0);
- pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
- }
- m_feedBack = null;
- m_isMouseDown = false;
- }
- }
- }
注意:要添加ArcEngine的相关程序集的引用,
如:ESRI.ArcGIS.ADF,ESRI.ArcGIS.Carti,ESRI.ArcGIS.Controls,ESRI.ArcGIS.Display,ESRI.ArcGIS.Geometry,ESRI.ArcGIS.SystemUI
10.在XAML中添加一个Button,并添加一个事件,DrawCircleTool_Click,在C#代码中添加该事件的代码如下:
- //绘制圆形
- private void DrawCircleTool_Click(object sender, RoutedEventArgs e)
- {
- ICommand DrawCircleTool = new DrawCircleToolClass();
- DrawCircleTool.OnCreate(mapControl.Object);
- mapControl.CurrentTool = (ITool)DrawCircleTool;
- }
11.最后执行程序,可以在加载地图文档,放大、缩小地图,也可以用自定义的画圆的工具在地图画圆。
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