ZoomOut.vb
' Copyright 2012 ESRI ' ' All rights reserved under the copyright laws of the United States ' and applicable international laws, treaties, and conventions. ' ' You may freely redistribute and use this sample code, with or ' without modification, provided you include the original copyright ' notice and use restrictions. ' ' See the use restrictions. ' Imports ESRI.ArcGIS.Carto Imports ESRI.ArcGIS.GeomeTry Imports ESRI.ArcGIS.Controls Imports ESRI.ArcGIS.Display Imports ESRI.ArcGIS.ADF.BaseClasses Imports ESRI.ArcGIS.ADF.CATIDs Imports System.Runtime.InteropServices <ComClass(ZoomOut.ClassId, ZoomOut.InterfaceId, ZoomOut.EventsId)> _ Public NotInheritable Class ZoomOut Inherits BaseTool #Region "COM GUIDs" ' These GUIDs provide the COM identity for this class ' and its COM interfaces. If you change them, existing ' clients will no longer be able to access the class. Public Const ClassId As String = "1A8E3B27-4AC0-4A79-919E-6805A35986F8" Public Const InterfaceId As String = "72FC4985-F481-46F2-9640-1B885AA70934" Public Const EventsId As String = "488ECCFE-6B4B-40F4-90DB-B4468295E9C9" #End Region #Region "COM Registration Function(s)" <ComRegisterFunction(), ComVisibleAttribute(False)> _ Public Shared Sub RegisterFunction(ByVal registerType As Type) ' Required for ArcGIS Component Category Registrar support ArcGISCategoryRegistration(registerType) 'Add any COM registration code after the ArcGISCategoryRegistration() call End Sub <ComUnregisterFunction(), ComVisibleAttribute(False)> _ Public Shared Sub UnregisterFunction(ByVal registerType As Type) ' Required for ArcGIS Component Category Registrar support ArcGISCategoryUnregistration(registerType) 'Add any COM unregistration code after the ArcGISCategoryUnregistration() call End Sub #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 Shared Sub ArcGISCategoryRegistration(ByVal registerType As Type) Dim regKey As String = String.Format("HKEY_CLASSES_ROOT\CLSID\{{{0}}}", registerType.GUID) ControlsCommands.Register(regKey) End Sub ''' <summary> ''' Required method for ArcGIS Component Category unregistration - ''' Do not modify the contents of this method with the code editor. ''' </summary> Private Shared Sub ArcGISCategoryUnregistration(ByVal registerType As Type) Dim regKey As String = String.Format("HKEY_CLASSES_ROOT\CLSID\{{{0}}}", registerType.GUID) ControlsCommands.Unregister(regKey) End Sub #End Region #End Region Private m_pHookHelper As IHookHelper Private m_feedBack As INewEnvelopeFeedback Private m_point As IPoint Private m_isMouseDown As Boolean Private m_zoomOutCur As System.Windows.Forms.Cursor Private m_moveZoomOutCur As System.Windows.Forms.Cursor ' A creatable COM class must have a Public Sub New() ' with no parameters, otherwise, the class will not be ' registered in the COM registry and cannot be created ' via CreateObject. Public Sub New() MyBase.New() MyBase.m_category = "Sample_Pan_VBNET/Zoom" MyBase.m_caption = "Zoom Out" MyBase.m_message = "Zooms the Display Out By Rectangle or Single Click" MyBase.m_toolTip = "Zoom Out" MyBase.m_name = "Sample_Pan/Zoom_Zoom Out" Dim res() As String = GetType(ZoomOut).Assembly.GetManifestResourceNames() If res.GetLength(0) > 0 Then MyBase.m_bitmap = New System.Drawing.Bitmap(GetType(ZoomOut).Assembly.GetManifestResourceStream("PanZoomVBNET.ZoomOut.bmp")) End If m_pHookHelper = New HookHelperClass End Sub Public Overrides Sub OnCreate(ByVal hook As Object) m_pHookHelper.Hook = hook m_zoomOutCur = New System.Windows.Forms.Cursor(GetType(ZoomOut).Assembly.GetManifestResourceStream("PanZoomVBNET.ZoomOut.cur")) m_moveZoomOutCur = New System.Windows.Forms.Cursor(GetType(ZoomOut).Assembly.GetManifestResourceStream("PanZoomVBNET.MoveZoomOut.cur")) End Sub Public Overrides ReadOnly Property Enabled() As Boolean Get If m_pHookHelper.FocusMap Is Nothing Then Return False End If Return True End Get End Property Public Overrides Sub OnMouseDown(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Integer, ByVal Y As Integer) If m_pHookHelper.ActiveView Is Nothing Then Return End If 'If the active view is a page layout If TypeOf m_pHookHelper.ActiveView Is IPageLayout Then 'Create a point in map coordinates Dim pPoint As IPoint = CType(m_pHookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y), IPoint) 'Get the map if the point is within a data frame Dim pMap As IMap = m_pHookHelper.ActiveView.HitTestMap(pPoint) If pMap Is Nothing Then Return End If 'Set the map to be the page layout's focus map If Not pMap Is m_pHookHelper.FocusMap Then m_pHookHelper.ActiveView.FocusMap = pMap m_pHookHelper.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, Nothing, Nothing) End If End If 'Create a point in map coordinates Dim pActiveView As IActiveView = CType(m_pHookHelper.FocusMap, IActiveView) m_point = pActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y) m_isMouseDown = True End Sub Public Overrides Sub OnMouseMove(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Integer, ByVal Y As Integer) If Not m_isMouseDown Then Return End If 'Get the focus map Dim pActiveView As IActiveView = CType(m_pHookHelper.FocusMap, IActiveView) 'Start an envelope feedback If m_feedBack Is Nothing Then m_feedBack = New NewEnvelopeFeedbackClass m_feedBack.Display = pActiveView.ScreenDisplay m_feedBack.Start(m_point) End If 'Move the envelope feedback m_feedBack.MoveTo(pActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y)) End Sub Public Overrides Sub OnMouseUp(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Integer, ByVal Y As Integer) If Not m_isMouseDown Then Return End If Dim pEnvelope As IEnvelope Dim pFeedEnvelope As IEnvelope Dim NewWidth As Double, NewHeight As Double 'Get the focus map Dim pActiveView As IActiveView = CType(m_pHookHelper.FocusMap, IActiveView) 'If an envelope has not been tracked If m_feedBack Is Nothing Then 'Zoom out from the mouse click pEnvelope = pActiveView.Extent pEnvelope.Expand(2, 2, True) pEnvelope.CenterAt(m_point) Else 'Stop the envelope feedback pFeedEnvelope = m_feedBack.Stop() 'Exit if the envelope height or width is 0 If pFeedEnvelope.Width = 0 Or pFeedEnvelope.Height = 0 Then m_feedBack = Nothing m_isMouseDown = False End If NewWidth = pActiveView.Extent.Width * (pActiveView.Extent.Width / pFeedEnvelope.Width) NewHeight = pActiveView.Extent.Height * (pActiveView.Extent.Height / pFeedEnvelope.Height) 'Set the new extent coordinates pEnvelope = 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) End If 'Set the new extent pActiveView.Extent = pEnvelope 'Refresh the active view pActiveView.Refresh() m_feedBack = Nothing m_isMouseDown = False End Sub Public Overrides Sub OnKeyDown(ByVal keyCode As Integer, ByVal Shift As Integer) If (m_isMouseDown) Then If (keyCode = 27) Then m_isMouseDown = False m_feedBack = Nothing m_pHookHelper.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewForeground, Nothing, Nothing) End If End If End Sub Public Overrides ReadOnly Property Cursor() As Integer Get If (m_isMouseDown) Then Return m_moveZoomOutCur.Handle.ToInt32() Else Return m_zoomOutCur.Handle.ToInt32() End If End Get End Property End Class