Difference between revisions of "Comments:Slider Tool"

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== Tips ==
 
=== Flexible Bounds ===
 
A normal slider can just be defined for a constant interval, i.e. the interval can't be influenced by worksheet variables. But sometimes it's necessary to create a slider for the user with flexible bounds, let's say from ''a'' to ''b''. That's not possible directly, but one can achieve a similar effect:
 
# Create a slider ''t'' in the interval [0, 1]
 
# Use interpolation to calculate the "real value" ''c'' (in the interval [''a'', ''b'']): <pre>c = a + (b - a) * t</pre>
 
# Hide the label of the slider
 
# Place a text object with the content <code>"c = " + c</code> at the old label's position
 
Such a slider works almost exactly like the normal one (exception: the label isn't moving, that needs some additional work), so your users probably won't notice.
 
 
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Revision as of 18:44, 26 December 2010

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