gxp.ScaleLimitPanel¶

Config Options¶

Configuration properties in addition to those listed for Ext.Panel.

limitMaxScaleDenominator

Boolean Limit the maximum scale denominator. If false, no upper

limit will be imposed.

limitMinScaleDenominator

Boolean Limit the minimum scale denominator. If false, no lower

limit will be imposed.

maxScaleDenominator

Number The initial maximum scale denominator. If <limitMaxScaleDenominator> is

true and no minScaleDenominator is provided, <maxScaleDenominatorLimit> will be used.

maxScaleDenominatorLimit

Number Upper limit for scale denominators. Default is what you get

when you project the world in Spherical Mercator onto a single 256 x 256 pixel tile and assume OpenLayers.DOTS_PER_INCH (this corresponds to zoom level 0 in Google Maps).

minScaleDenominator

Number The initial minimum scale denominator. If <limitMinScaleDenominator> is

true and no minScaleDenominator is provided, <minScaleDenominatorLimit> will be used.

minScaleDenominatorLimit

Number Lower limit for scale denominators. Default is what you get when

you assume 20 zoom levels starting with the world in Spherical Mercator on a single 256 x 256 tile at zoom 0 where the zoom factor is 2.

modifyScaleTipContext

Function Called from the multi-slider tip’s getText function. The

function will receive two arguments - a reference to the panel and a data object. The data object will have scale, zoom, and type properties already calculated. Other properties added to the data object are available to the <scaleSliderTemplate>.

scaleLevels

Number Number of scale levels to assume. This is only for scaling

values exponentially along the slider. Scale values are not required to one of the discrete levels. Default is 20.

scaleSliderTemplate

String Template for the tip displayed by the scale threshold slider.

Can be customized using the following keywords in curly braces:

• zoom - the zoom level
• scale - the scale denominator
• type - “Max” or “Min” denominator
• scaleType - “Min” or “Max” scale (sense is opposite of type)

Default is “{scaleType} Scale 1:{scale}”.