Maps SDK for Web
tt.ScrollZoomHandler
The ScrollZoomHandler allows the user to zoom the map by scrolling.
Methods
disable( )
Disables the 'scroll to zoom' interaction.
enable([options])
isEnabled( ): Boolean
Returns a Boolean indicating whether the 'scroll to zoom' interaction is enabled.
Returns
true if the 'scroll to zoom' interaction is enabled.
setWheelZoomRate(wheelZoomRate)
Set the zoom rate of a mouse wheel.
Example
// Slow down mouse wheel zoom
map.scrollZoom.setWheelZoomRate(1/1000);
Parameters
Name | Description |
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wheelZoomRate
Number default:None |
The rate used to scale mouse wheel movement to a zoom value (default 1/450 ).
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setZoomRate(zoomRate)
Set the zoom rate of a trackpad.
Example
// Slow down trackpad zoom
map.scrollZoom.setZoomRate(1/500);
Parameters
Name | Description |
---|---|
zoomRate
Number default:None |
The rate used to scale trackpad movement to a zoom value (default 1/100 ).
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