font resizing algortihm

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  • ajk
    #1

    font resizing algortihm

    I have a user control which displays a number say 12.2 and I would
    like to maximize the size of the number in the control. If a user
    changes the size of the control the number/font size should scale
    accordingly.

    At the moment I create a number of Font's; first large then smaller
    until it fits into the control, then from small to large until it no
    longer fits - then take largest fitting font size. This seems somehow
    like a resource demanding clumsy way so I was wondering if somebody
    knows a best practice for this?

    br/ajk
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    • Clayton
      #2
      Re: font resizing algortihm

      On Jul 28, 9:08 am, ajk <a...@workmail. comwrote:
      I have a user control which displays a number say 12.2 and I would
      like to maximize the size of the number in the control. If a user
      changes the size of the control the number/font size should scale
      accordingly.
      >
      At the moment I create a number of Font's; first large then smaller
      until it fits into the control, then from small to large until it no
      longer fits - then take largest fitting font size. This seems somehow
      like a resource demanding clumsy way so I was wondering if somebody
      knows a best practice for this?
      >
      br/ajk
      hi,

      i've seen a good algorithm on Que's book for exam 70-316. when i find
      it i post back here

        Comment

        • Peter Duniho
          #3
          Re: font resizing algortihm

          ajk wrote:
          I have a user control which displays a number say 12.2 and I would
          like to maximize the size of the number in the control. If a user
          changes the size of the control the number/font size should scale
          accordingly.
          >
          At the moment I create a number of Font's; first large then smaller
          until it fits into the control, then from small to large until it no
          longer fits - then take largest fitting font size. This seems somehow
          like a resource demanding clumsy way so I was wondering if somebody
          knows a best practice for this?

          It _is_ resource demanding and a bit clumsy. But it's pretty much what
          you have to do.

          You can make a pretty good initial guess by finding the pixel size of
          some "standard" font size, and then scaling that according to the ratio
          of the size of the space in which you want the displayed text to fit to
          the size that you calculated. But for a perfect fit you will still need
          to test the calculated size and refine it based on the actual metrics.

          IMHO, if you want the least clumsy code and are willing to accept a
          situation where the font could be slightly larger but isn't, you should
          just calculate the ratio-based size, and then reduce it slightly
          iteratively until it fits. That at least avoids having the extra case
          of dealing with when it's too small (which is subtly different from the
          case when it's too big, requiring some almost-the-same-but-not-quite
          duplicated code).

          Pete

            Comment

            • ajk
              #4
              Re: font resizing algortihm

              On Sat, 28 Jul 2007 09:05:35 -0700, Clayton <clayton.curmi@ gmail.com>
              wrote:
              >hi,
              >
              >i've seen a good algorithm on Que's book for exam 70-316. when i find
              >it i post back here
              that would be great! thx!

                Comment

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