module to measure string in pixels

Andre_br has asked for the wisdom of the Perl Monks concerning the following question:

Hello folks,

Here´s the problem, I want to line up a drop-down select menu that was supposed to have two columns (if our friend Mr Html gave us this possibility). As he doesn´t, I´m trying to line up the first and second pseudo-columns with alterned   and spaces, like this:

<select name="myselect" class="form_s">
<option value="a" selected>this is a big text &nbsp; 1 match</option>
<option value="b" selected>small txt &nbsp; &nbsp; &nbsp; &nbsp; &nbsp
+; &nbsp; &nbsp; &nbsp;  30 matches</option>
</select>
[download]

Naturally, the options are generated by perl from an array, and, I thought, hey, no problem, it´s just a matter of counting the number of characters and inserting one space (or  ) for each one that it lacks to a defined lenght.

But the problem is that some letters occupy less space than others, so the pseudo-columns do not align.

Then, I thought if there is any way to measure the expected length in pixels with Perl. You guys know of any?

Thanks a lot, buddys

André

Comment on module to measure string in pixels Download Code

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Re: module to measure string in pixels by dws (Chancellor) on May 25, 2005 at 19:35 UTC
I thought if there is any way to measure the expected length in pixels with Perl. You guys know of any? That information isn't available on the server side, since the server doesn't have knowledge of what fonts the user has installed on the client side, and browsers do font substitution if the requested font isn't available. What you could do is use CSS to specify a fixed-width font for the option text. Something like (untested): `<style type="text/css"> #form_s option { font: "courier new", monospace; } </style>` [download] then you can line up your text by counting characters.	[reply] [d/l]
Re^2: module to measure string in pixels by ww (Archbishop) on May 25, 2005 at 19:50 UTC
dws ++! Very good. catch: user can/may have overiden your style sheet. bottom line: should work for most	[reply]
Re: module to measure string in pixels by suaveant (Parson) on May 25, 2005 at 21:05 UTC
You could also create a drop down list of your own using a table and DHTML, but that is a whole other can of poisonous firebreathing exploding worms. - Ant - Some of my best work - (1 2 3)	[reply]
Re^2: module to measure string in pixels by Andre_br (Pilgrim) on May 26, 2005 at 00:30 UTC
Hey folks, Thanks a lot for the replies. The monospace then it will be. Good solution, in fact. Thanks a lot André	[reply]


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