ArcGIS Engine Developer Guide

BUILDING APPLICATIONS WITH VISUAL JAVABEANS
Drawing an overview rectangle on the MapBean
You will now use the map component as an overview window and draw on its
display the current extent of the focus map within the pageLayout component.
As you navigate around the data within the data frame of the pageLayout component,
you will see the map component’s overview window update.
1. Add the following imports to MapViewerFrame.java for classes used in this
step:
import com.esri.arcgis.beans.map.IMapControlEvents2Adapter;
import com.esri.arcgis.beans.map.IMapControlEvents2OnAfterDrawEvent;
import com.esri.arcgis.beans.pagelayout.
IPageLayoutControlEventsOnPageLayoutReplacedEvent;
import com.esri.arcgis.carto.Map;
import com.esri.arcgis.carto.esriViewDrawPhase;
import com.esri.arcgis.display.DisplayTransformation;
import com.esri.arcgis.display.ITransformEventsAdapter;
import com.esri.arcgis.display.ITransformEventsVisibleBoundsUpdatedEvent;
import com.esri.arcgis.display.RgbColor;
import com.esri.arcgis.display.SimpleFillSymbol;
import com.esri.arcgis.display.SimpleLineSymbol;
import com.esri.arcgis.geometry.IEnvelope;
2. Add the following class members to MapViewerFrame:
public class MapViewerFrame extends JFrame {
SimpleFillSymbol fillSymbol; // The symbol used to draw the envelope
IEnvelope currentExtent; // The envelope drawn on the MapBean
Map focusMap;
// The PageLayoutBean's focus map
. . .
PageLayoutBean pageLayout;
3. Create a new private method called createOverviewSymbol(). This is where
you will create the symbol used in the map control to represent the extent of
the data in the pageLayout Bean. Add the following method:
private void createOverviewSymbol() throws IOException{
RgbColor color = new RgbColor();
color.setRed(255);
color.setGreen(0);
color.setBlue(0);
color.setTransparency((byte)255);
SimpleLineSymbol outline = new SimpleLineSymbol();
outline.setWidth(15);
outline.setColor(color);
fillSymbol = new SimpleFillSymbol();
}
color.setTransparency((byte) 0);
fillSymbol.setColor(color);
fillSymbol.setOutline(outline);
Chapter 6 • Developer scenarios • 317