Draw features in ArcMap using ArcGIS Addin tool (Arcobject's IRubberband Interface) doesn't provide ways to zoom and pan while editing. In order to implement pan and zoom functionality during edit use IDisplayFeedback Interface. Following is the code snippets using IDisplayFeedback Interface using C#. Then, you can use ArcMap standard keys to pan (arrows-left, right, top, bottom) and zoom (mouse-scroll or Z & X).
protected override void OnUpdate()
{
Enabled = ArcMap.Application != null;
}
protected override void OnMouseDown(ESRI.ArcGIS.Desktop.AddIns.Tool.MouseEventArgs arg)
{
DrawGeometryOnMousedown(ArcMap.Document, arg);
}
protected override void OnMouseMove(MouseEventArgs arg)
{
DrawGeometryOnMouseMove(ArcMap.Document, arg);
}
protected override void OnDoubleClick()
{
FinishGeometryDrawOnDblClick(ArcMap.Document);
}
protected override void OnRefresh(int hDC)
{
if (newPolygonFeedback != null)
{
newPolygonFeedback.Refresh(hDC);
}
}
#region private helpers
//Polygon geometry object
private INewPolygonFeedback newPolygonFeedback;
private void DrawGeometryOnMousedown(IMxDocument doc, ESRI.ArcGIS.Desktop.AddIns.Tool.MouseEventArgs arg)
{
// Get the ScreenDisplay for the the ActiveView
IDisplay display = doc.ActiveView.ScreenDisplay;
// Get the current mouse location in Map Units
IPoint point = display.DisplayTransformation.ToMapPoint(arg.X, arg.Y);
// Check that user is not using an existing feedback
if ((newPolygonFeedback == null))
{
// Create a new Feedback
newPolygonFeedback = new NewPolygonFeedback();
// Get the Feedback's Symbol by reference (IDisplayFeedback::Symbol)
var simpleLineSymbol = newPolygonFeedback.Symbol as ISimpleLineSymbol;
// Create a new RGBColor and set it up
IRgbColor rgbColor = new RgbColor();
rgbColor.Green = 255;
rgbColor.Red = 0;
rgbColor.Blue = 255;
// Set the Color and Style for the Feedback's Symbol
if (simpleLineSymbol != null)
{
simpleLineSymbol.Color = rgbColor;
simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSSolid;
}
// Set the new Feedback's DISPLAY property (IDisplayFeedback::DISPLAY)
newPolygonFeedback.Display = (IScreenDisplay)display;
// Start the Feedback at the current mouse location
newPolygonFeedback.Start(point);
}
else
{
// Otherwise use the current mouse location to add a vertex to the current feedback
newPolygonFeedback.AddPoint(point);
}
}
private void DrawGeometryOnMouseMove(IMxDocument doc, ESRI.ArcGIS.Desktop.AddIns.Tool.MouseEventArgs arg)
{
// Get the ScreenDisplay for the the ActiveView
IMxDocument pMXDoc = doc;
IDisplay pDisp = pMXDoc.ActiveView.ScreenDisplay;
// Check if the user is currently using the feedback
if (newPolygonFeedback != null)
{
// Get the current mouse location in map units
IPoint pPnt = pDisp.DisplayTransformation.ToMapPoint(arg.X, arg.Y);
// Move the Feedback to the current mouse location (IDisplayFeedback::MoveTo)
newPolygonFeedback.MoveTo(pPnt);
}
}
private void FinishGeometryDrawOnDblClick(IMxDocument doc)
{
// Check if the user is currently using the feedback
if (newPolygonFeedback != null)
{
// Stop the feedback and set it to Nothing
IGeometry geometry = newPolygonFeedback.Stop();
newPolygonFeedback = null;
//check for valid geometery
if (geometry != null)
{
IScreenDisplay screenDisplay = doc.ActiveView.ScreenDisplay;
// Constants
screenDisplay.StartDrawing(screenDisplay.hDC, (System.Int16)esriScreenCache.esriNoScreenCache);
// Explicit Cast
IRgbColor rgbColor = new RgbColorClass();
rgbColor.Red = 255;
rgbColor.Transparency = 75;
IColor color = rgbColor; // Implicit Cast
ISimpleFillSymbol simpleFillSymbol = new SimpleFillSymbolClass();
simpleFillSymbol.Color = color;
//Draw geometry
ISymbol symbol = simpleFillSymbol as ISymbol; // Dynamic Cast
screenDisplay.SetSymbol(symbol);
screenDisplay.DrawPolygon(geometry);
screenDisplay.FinishDrawing();
}
}
ArcMap.Document.ActiveView.Refresh();
}
#endregion private helpers
