ArcEngine开发之自定义工具栏--地图放大、缩小（C#）

1、放大命令实现

创建GIS类，选择Base Command模版，类的名称为ZoomIn，选择第2类：ArcMap MapControl or PageLayoutControl command

该类的源代码为：

using System;using ESRI.ArcGIS.Carto;using ESRI.ArcGIS.Geometry;using ESRI.ArcGIS.Controls;using ESRI.ArcGIS.Display;using ESRI.ArcGIS.SystemUI;using ESRI.ArcGIS.ADF.CATIDs;using System.Runtime.InteropServices;namespace GIS{[ClassInterface(ClassInterfaceType.None)][Guid("2C214724-BFA2-4e8c-BC5D-775C67FA6F51")]public class ZoomIn : ICommand, ITool{        #region COM Registration Function(s)        [ComRegisterFunction()]        [ComVisible(false)]        static void RegisterFunction(Type registerType)        {            // Required for ArcGIS Component Category Registrar support            ArcGISCategoryRegistration(registerType);            //            // TODO: Add any COM registration code here            //        }        [ComUnregisterFunction()]        [ComVisible(false)]        static void UnregisterFunction(Type registerType)        {            // Required for ArcGIS Component Category Registrar support            ArcGISCategoryUnregistration(registerType);            //            // TODO: Add any COM unregistration code here            //        }        #region ArcGIS Component Category Registrar generated code        /// <summary>        /// Required method for ArcGIS Component Category registration -        /// Do not modify the contents of this method with the code editor.        /// </summary>        private static void ArcGISCategoryRegistration(Type registerType)        {            string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);            ControlsCommands.Register(regKey);        }        /// <summary>        /// Required method for ArcGIS Component Category unregistration -        /// Do not modify the contents of this method with the code editor.        /// </summary>        private static void ArcGISCategoryUnregistration(Type registerType)        {            string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);            ControlsCommands.Unregister(regKey);        }        #endregion        #endregion[DllImport("gdi32.dll")]static extern bool DeleteObject(IntPtr hObject);private System.Drawing.Bitmap m_bitmap;private IntPtr m_hBitmap;private IHookHelper m_pHookHelper;private INewEnvelopeFeedback m_feedBack;private IPoint m_point;private Boolean m_isMouseDown;private System.Windows.Forms.Cursor m_zoomInCur;private System.Windows.Forms.Cursor m_moveZoomInCur;public ZoomIn(){//Load resourcesstring[] res = GetType().Assembly.GetManifestResourceNames();if(res.GetLength(0) > 0){m_bitmap = new System.Drawing.Bitmap(GetType().Assembly.GetManifestResourceStream(GetType(), "ZoomIn.bmp"));if(m_bitmap != null){m_bitmap.MakeTransparent(m_bitmap.GetPixel(1,1));m_hBitmap = m_bitmap.GetHbitmap();}}m_pHookHelper = new HookHelperClass ();}~ZoomIn(){if(m_hBitmap.ToInt32() != 0)DeleteObject(m_hBitmap);m_pHookHelper = null;m_zoomInCur = null;m_moveZoomInCur = null;}#region ICommand Memberspublic void OnClick(){}public string Message{get{return "zooms the Display In By Rectangle or Single Click";}}public int Bitmap{get{return m_hBitmap.ToInt32();}}public void OnCreate(object hook){            m_pHookHelper.Hook = hook;            m_zoomInCur = new System.Windows.Forms.Cursor(GetType().Assembly.GetManifestResourceStream(GetType(), "ZoomIn.cur"));            m_moveZoomInCur = new System.Windows.Forms.Cursor(GetType().Assembly.GetManifestResourceStream(GetType(), "MoveZoomIn.cur"));}public string Caption{get{return "Zoom In";}}public string Tooltip{get{return "Zoom In";}}public int HelpContextID{get{// TODO:  Add ZoomIn.HelpContextID getter implementationreturn 0;}}public string Name{get{return "Sample_Pan/Zoom_Zoom In";}}public bool Checked{get{return false;}}public bool Enabled{get{if(m_pHookHelper.FocusMap == null) return false;return true;}}public string HelpFile{get{// TODO:  Add ZoomIn.HelpFile getter implementationreturn null;}}public string Category{get{return "Sample_Pan/Zoom";}}#endregion#region ITool Memberspublic void OnMouseDown(int button, int shift, int x, int y){if(m_pHookHelper.ActiveView == null) return;//If the active view is a page layoutif(m_pHookHelper.ActiveView is IPageLayout){//Create a point in map coordinatesIPoint pPoint = (IPoint) m_pHookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(x, y);//Get the map if the point is within a data frameIMap pMap = m_pHookHelper.ActiveView.HitTestMap(pPoint);if(pMap == null) return;//Set the map to be the page layout's focus mapif(pMap != m_pHookHelper.FocusMap){m_pHookHelper.ActiveView.FocusMap = pMap;m_pHookHelper.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);}}//Create a point in map coordinatesIActiveView pActiveView = (IActiveView) m_pHookHelper.FocusMap;m_point = pActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(x, y);m_isMouseDown = true;}public void OnMouseMove(int button, int shift, int x, int y){if(!m_isMouseDown) return;//Get the focus mapIActiveView pActiveView = (IActiveView) m_pHookHelper.FocusMap;//Start an envelope feedbackif(m_feedBack == null){m_feedBack = new NewEnvelopeFeedbackClass();m_feedBack.Display = pActiveView.ScreenDisplay;m_feedBack.Start(m_point);}//Move the envelope feedbackm_feedBack.MoveTo(pActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(x, y));}public void OnMouseUp(int button, int shift, int x, int y){if(!m_isMouseDown) return;//Get the focus mapIActiveView pActiveView = (IActiveView) m_pHookHelper.FocusMap;//If an envelope has not been trackedIEnvelope pEnvelope;if(m_feedBack == null){//Zoom in from mouse clickpEnvelope = pActiveView.Extent;pEnvelope.Expand(0.5, 0.5, true);pEnvelope.CenterAt(m_point);}else{//Stop the envelope feedbackpEnvelope = m_feedBack.Stop();//Exit if the envelope height or width is 0if(pEnvelope.Width ==0 || pEnvelope.Height == 0){m_feedBack = null;m_isMouseDown = false;}}//Set the new extentpActiveView.Extent = pEnvelope;//Refresh the active viewpActiveView.Refresh();m_feedBack = null;m_isMouseDown = false;}public void OnKeyDown(int keyCode, int shift){if(m_isMouseDown){if(keyCode == 27){m_isMouseDown = false;m_feedBack = null;m_pHookHelper.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewForeground, null, null);}}}public void OnKeyUp(int keyCode, int shift){// TODO:  Add ZoomIn.OnKeyUp implementation}public int Cursor{get{if(m_isMouseDown)return m_moveZoomInCur.Handle.ToInt32();elsereturn m_zoomInCur.Handle.ToInt32();}}public bool OnContextMenu(int x, int y){// TODO:  Add ZoomIn.OnContextMenu implementationreturn false;}public bool Deactivate(){return true;}public void Refresh(int hdc){// TODO:  Add ZoomIn.Refresh implementation}public void OnDblClick(){// TODO:  Add ZoomIn.OnDblClick implementation}#endregion}}

 

调用：

ICommand command = new ZoomIn();            command.OnCreate(m_mapControl.Object);            ITool tool = command as ITool;            axMapControl1.CurrentTool = tool;

 

 

2、缩小命令实现

创建GIS类，选择Base Command模版，类的名称为ZoomOut，选择第2类：ArcMap MapControl or PageLayoutControl command

该类的源代码为：

using System;using ESRI.ArcGIS.Carto;using ESRI.ArcGIS.Geometry;using ESRI.ArcGIS.Controls;using ESRI.ArcGIS.Display;using ESRI.ArcGIS.SystemUI;using ESRI.ArcGIS.ADF.CATIDs;using System.Runtime.InteropServices;namespace GIS{[ClassInterface(ClassInterfaceType.None)][Guid("03079006-888A-4691-941A-7B16F35E2C1E")]public class ZoomOut : ICommand, ITool{        #region COM Registration Function(s)        [ComRegisterFunction()]        [ComVisible(false)]        static void RegisterFunction(Type registerType)        {            // Required for ArcGIS Component Category Registrar support            ArcGISCategoryRegistration(registerType);            //            // TODO: Add any COM registration code here            //        }        [ComUnregisterFunction()]        [ComVisible(false)]        static void UnregisterFunction(Type registerType)        {            // Required for ArcGIS Component Category Registrar support            ArcGISCategoryUnregistration(registerType);            //            // TODO: Add any COM unregistration code here            //        }        #region ArcGIS Component Category Registrar generated code        /// <summary>        /// Required method for ArcGIS Component Category registration -        /// Do not modify the contents of this method with the code editor.        /// </summary>        private static void ArcGISCategoryRegistration(Type registerType)        {            string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);            ControlsCommands.Register(regKey);        }        /// <summary>        /// Required method for ArcGIS Component Category unregistration -        /// Do not modify the contents of this method with the code editor.        /// </summary>        private static void ArcGISCategoryUnregistration(Type registerType)        {            string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);            ControlsCommands.Unregister(regKey);        }        #endregion        #endregion[DllImport("gdi32.dll")]static extern bool DeleteObject(IntPtr hObject);private System.Drawing.Bitmap m_bitmap;private IntPtr m_hBitmap;private IHookHelper m_pHookHelper;private INewEnvelopeFeedback m_feedBack;private IPoint m_point;private Boolean m_isMouseDown;private System.Windows.Forms.Cursor m_zoomOutCur;private System.Windows.Forms.Cursor m_moveZoomOutCur;public ZoomOut(){//Load resourcesstring[] res = GetType().Assembly.GetManifestResourceNames();if(res.GetLength(0) > 0){m_bitmap = new System.Drawing.Bitmap(GetType().Assembly.GetManifestResourceStream(GetType(), "ZoomOut.bmp"));if(m_bitmap != null){m_bitmap.MakeTransparent(m_bitmap.GetPixel(1,1));m_hBitmap = m_bitmap.GetHbitmap();}}m_pHookHelper = new HookHelperClass ();}~ZoomOut(){if(m_hBitmap.ToInt32() != 0)DeleteObject(m_hBitmap);m_pHookHelper = null;m_zoomOutCur = null;m_moveZoomOutCur = null;}#region ICommand Memberspublic void OnClick(){}public string Message{get{return "Zooms the display out by rectangle or single click";}}public int Bitmap{get{return m_hBitmap.ToInt32();}}public void OnCreate(object hook){m_pHookHelper.Hook = hook;            m_zoomOutCur = new System.Windows.Forms.Cursor(GetType().Assembly.GetManifestResourceStream(GetType(), "ZoomOut.cur"));            m_moveZoomOutCur = new System.Windows.Forms.Cursor(GetType().Assembly.GetManifestResourceStream(GetType(), "MoveZoomOut.cur"));}public string Caption{get{return "Zoom Out";}}public string Tooltip{get{return "Zoom Out";}}public int HelpContextID{get{// TODO:  Add ZoomOut.HelpContextID getter implementationreturn 0;}}public string Name{get{return "Sample_Pan/Zoom_Zoom Out";}}public bool Checked{get{return false;}}public bool Enabled{get{if(m_pHookHelper.FocusMap == null) return false;return true;}}public string HelpFile{get{// TODO:  Add ZoomOut.HelpFile getter implementationreturn null;}}public string Category{get{return "Sample_Pan/Zoom";}}#endregion#region ITool Memberspublic void OnMouseDown(int button, int shift, int x, int y){if(m_pHookHelper.ActiveView == null) return;//If the active view is a page layoutif(m_pHookHelper.ActiveView is IPageLayout){//Create a point in map coordinatesIPoint pPoint = (IPoint) m_pHookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(x, y);//Get the map if the point is within a data frameIMap pMap = m_pHookHelper.ActiveView.HitTestMap(pPoint);if(pMap == null) return;//Set the map to be the page layout's focus mapif(pMap != m_pHookHelper.FocusMap){m_pHookHelper.ActiveView.FocusMap = pMap;m_pHookHelper.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);}}//Create a point in map coordinatesIActiveView pActiveView = (IActiveView) m_pHookHelper.FocusMap;m_point = pActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(x, y);m_isMouseDown = true;}public void OnMouseMove(int button, int shift, int x, int y){if(!m_isMouseDown) return;//Get the focus mapIActiveView pActiveView = (IActiveView) m_pHookHelper.FocusMap;//Start an envelope feedbackif(m_feedBack == null){m_feedBack = new NewEnvelopeFeedbackClass();m_feedBack.Display = pActiveView.ScreenDisplay;m_feedBack.Start(m_point);}//Move the envelope feedbackm_feedBack.MoveTo(pActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(x, y));}public void OnMouseUp(int button, int shift, int x, int y){if(!m_isMouseDown) return;IEnvelope pEnvelope;IEnvelope pFeedEnvelope;double newWidth, newHeight;//Get the focus mapIActiveView pActiveView = (IActiveView) m_pHookHelper.FocusMap;//If an envelope has not been trackedif(m_feedBack == null){//Zoom out from the mouse clickpEnvelope = pActiveView.Extent;pEnvelope.Expand(2, 2, true);pEnvelope.CenterAt(m_point);}else{//Stop the envelope feedbackpFeedEnvelope = m_feedBack.Stop();//Exit if the envelope height or width is 0if(pFeedEnvelope.Width == 0 || pFeedEnvelope.Height == 0){m_feedBack = null;m_isMouseDown = false;}newWidth = pActiveView.Extent.Width * (pActiveView.Extent.Width / pFeedEnvelope.Width);newHeight = pActiveView.Extent.Height * (pActiveView.Extent.Height / pFeedEnvelope.Height);//Set the new extent coordinatespEnvelope = new EnvelopeClass();pEnvelope.PutCoords(pActiveView.Extent.XMin - ((pFeedEnvelope.XMin - pActiveView.Extent.XMin) * (pActiveView.Extent.Width / pFeedEnvelope.Width)), pActiveView.Extent.YMin - ((pFeedEnvelope.YMin - pActiveView.Extent.YMin) * (pActiveView.Extent.Height / pFeedEnvelope.Height)),(pActiveView.Extent.XMin - ((pFeedEnvelope.XMin - pActiveView.Extent.XMin) * (pActiveView.Extent.Width / pFeedEnvelope.Width))) + newWidth,(pActiveView.Extent.YMin - ((pFeedEnvelope.YMin - pActiveView.Extent.YMin) * (pActiveView.Extent.Height / pFeedEnvelope.Height))) + newHeight);}//Set the new extentpActiveView.Extent = pEnvelope;//Refresh the active viewpActiveView.Refresh();m_feedBack = null;m_isMouseDown = false;}public void OnKeyDown(int keyCode, int shift){if(m_isMouseDown){if(keyCode == 27) //ESC key{m_feedBack = null;m_isMouseDown = false;m_pHookHelper.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewForeground, null, null);}}}public void OnKeyUp(int keyCode, int shift){// TODO:  Add ZoomOut.OnKeyUp implementation}public int Cursor{get{if(m_isMouseDown)return m_moveZoomOutCur.Handle.ToInt32();elsereturn m_zoomOutCur.Handle.ToInt32();}}public bool OnContextMenu(int x, int y){// TODO:  Add ZoomOut.OnContextMenu implementationreturn false;}public bool Deactivate(){return true;}public void Refresh(int hdc){// TODO:  Add ZoomOut.Refresh implementation}public void OnDblClick(){// TODO:  Add ZoomOut.OnDblClick implementation}#endregion}}

 

调用：

ICommand command = new ZoomOut();            command.OnCreate(m_mapControl.Object);            ITool tool = command as ITool;            axMapControl1.CurrentTool = tool;

注：希望与大家分享下自己查找到的或者自己修改后的代码，新手学习，若有错误欢迎批评指正！