Pitney-bowes MapXtreme Uživatelský manuál stáhnout pdf (Strana 82)

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Chapter 5: Web Applications, Controls, and Tools

MapXtreme Web Controls and Tools

MapXtreme v7.1 82 Developer Guide

LegendControl The LegendControl allows you to display a legend for a given

MapControl. The legend that is returned is a non-interactive image. The

default export format is .GIF.

The legend to display can be specified at design time using its

LegendAlias or its index in the map's legend list. This can also be set

using JavaScript on the page. JavaScript can also be used to show and

hide the legend. You can arrange for the legend to be scrollable.

Both thematic and cartographic legends are supported in the

LegendControl.

The Legend Control web sample application supports this control. It

demonstrates how to create and use a customized LegendControl

based on our current web control architecture, and how to create a

theme and display a legend by sending requests to the server using

JavaScript without needing to refresh the whole page. For more

information, see the MapXtreme Learning Resources browser on your

Program menu or from the MapInfo website under Support & Training.

Expand the Learning Resources link and click on Sample Applications.

Map Tools

Description

CenterTool Allows you to recenter the map by clicking on the map.

DistanceTool Allows you to get the distance between two or more points by clicking

on the map.

NavigationTools Allow you to pan the map by fixed directions: North, South, East, West,

NorthEast, NorthWest, SouthEast, and SouthWest.

PanTool Allows you to reposition the map within its window by dragging in any

direction.

PointSelectionTool Allows you to select a feature (nearest to the point) when clicked on the

map.

PolygonSelectionTool Allows you to select all features whose centroids lie within the polygon.

The selection area is drawn on the map using mouse clicks

representing the nodes of the polygon. A double click closes/ends the

polygon.

RadiusSelectionTool Allows you to select all features whose centroids lie within the radius.

The radius is drawn on the map using mouse clicks representing the

center and boundary of the circle. The selection radius is drawn on the

map using a click and drag operation.

RectangleSelectionTool Allows you to select all features whose centroids lie within the rectangle.

The rectangle selection area is drawn on the map using a click and drag

operation.

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