ol-ext

Class: Tooltip

ol.Overlay. Tooltip

A tooltip element to be displayed over the map and attached on the cursor position.

new Tooltip(options)

Parameters:
Name Type Description
options

Extend Popup options

Properties
Name Type Description
popupClass String

the a class of the overlay to style the popup.
maximumFractionDigits number

maximum digits to display on measure, default 2
formatLength function

a function that takes a number and returns the formated value, default length in meter
formatArea function

a function that takes a number and returns the formated value, default length in square-meter
getHTML function

a function that takes a feature and the info string and return a formated info to display in the tooltip, default display feature measure & info
offsetBox Number | Array.<number>

an offset box
positionning ol.OverlayPositioning | string | undefined

the 'auto' positioning var the popup choose its positioning to stay on the map.

Extends

Methods

addPopupClass(c)

Add a CSS class to the popup.

Parameters:
Name Type Description
c string

class name.
Inherited From:
Overrides:

formatArea(area)

Format area to display in the popup. Can be overwritten to display measure in a different unit (default: square-metter).

Parameters:
Name Type Description
area number

area in m2
Returns:

the formated area

Type
string

formatLength(length)

Format area to display in the popup Can be overwritten to display measure in different unit (default: meter).

Parameters:
Name Type Description
length number

length in m
Returns:

the formated length

Type
string

getHTML(feature, info)

Get the information to show in the tooltip The area/length will be added if a feature is attached.

Parameters:
Name Type Description
feature ol.Feature | undefined

the feature
info string

the info string

getVisible()

Check if popup is visible

Inherited From:
Overrides:
Returns:
Type
boolean

hide()

Hide the popup

Inherited From:
Overrides:

removeFeature()

Remove the current featue attached to the tip Similar to setFeature() with no argument

removePopupClass(c)

Remove a CSS class to the popup.

Parameters:
Name Type Description
c string

class name.
Inherited From:
Overrides:

setClosebox(b)

Set a close box to the popup.

Parameters:
Name Type Description
b bool
Inherited From:
Overrides:

setFeature(feature)

Set a feature associated with the tooltips, measure info on the feature will be added in the tooltip

Parameters:
Name Type Description
feature ol.Feature | ol.Event

an ol.Feature or an event (object) with a feature property

setInfo(what)

Set the Tooltip info If information is not null it will be set with a delay, thus watever the information is inserted, the significant information will be set. ie. ttip.setInformation('ok'); ttip.setInformation(null); will set 'ok' ttip.set('info','ok'); ttip.set('info', null); will set null

Parameters:
Name Type Description
what string

The information to display in the tooltip, default remove information

setMap(map)

Set the map instance the control is associated with and add its controls associated to this map.

Parameters:
Name Type Description
map _ol_Map_

The map instance.

setPopupClass(c)

Set the CSS class of the popup.

Parameters:
Name Type Description
c string

class name.
Inherited From:
Overrides:

setPositioning(pos)

Set positionning of the popup

Parameters:
Name Type Description
pos ol.OverlayPositioning | string | undefined

an ol.OverlayPositioning or 'auto' to var the popup choose the best position
Inherited From:
Overrides:

show(coordinate, html)

Set the position and the content of the popup.

Parameters:
Name Type Description
coordinate ol.Coordinate | string

the coordinate of the popup or the HTML content.
html string | undefined

the HTML content (undefined = previous content).
Inherited From:
Overrides:
Example
var popup = new ol.Overlay.Popup();
  // Show popup
  popup.show([166000, 5992000], "Hello world!");
  // Move popup at coord with the same info
  popup.show([167000, 5990000]);
  // set new info
  popup.show("New informations");