When the zoom level is equal to 1, the manager content is adjusted
to the bounds of the JSF view so as to be displayed entirely.
Consequently, a zoom level of
n
means that the content is scaled by a factor of
n
. For example, a zoom factor of 2 means that the manager content is
displayed double its size.
By default, the view is constrained by the
manager content bounds. The direct consequences are that:
This constraint can be removed by setting the
constrainedOnContents
property to
false
, as follows:
<jvtf:networkView constrainedOnContents="false" [...] />
The zoom level applied to the view by using the zoom interactor of
JavaScript™ zoom actions can be free or constrained to specified
zoom levels. In the free zoom mode, the only constraints are the
minimum and maximum zoom levels. The default value of the minimum
zoom level is set to 1 and the default value of the maximum zoom
level is set to 10. These constraints can be customized with the
minZoomLevel
and the
maxZoomLevel
properties respectively.
<jvtf:networkView minZoomLevel="2" maxZoomLevel="20" [...] />
Note
By default, the minimum zoom level cannot
be lower than 1.
To specify fixed zoom levels, use the
zoomLevels
property, as follows:
<jvtf:networkView zoomLevels="1.0, 2.0, 5.0, 10.0" [...] />
When this property is set:
The
minZoomLevel
and
maxZoomLevel
properties are ignored.
The
minZoomLevel
becomes the first zoom level and the
maxZoomLevel
the last zoom level in the list.
The zoom
interactor will fit to the nearest zoom level.
The
built-in zoom actions on the JavaScript view proxy use these
fixed zoom levels.
Fixed zoom levels must be used in order for
a tiled view to be cached on the client-side.