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TextMesh Pro Bug: KeyNotFoundException when using ellipsis, truncate with fallback font

Discussion in 'UGUI & TextMesh Pro' started by MarconiusDMM, Mar 11, 2020.

  1. MarconiusDMM

    MarconiusDMM

    Joined:
    Nov 24, 2017
    Posts:
    11
    Getting the following error:
    This is with 2.1.0-preview7.
    It only seems to happen with fallback fonts, and only if I have overflow mode set to Ellipsis or Truncate, and it actually tries to overflow. Works fine with my main font; also works fine if mode is simply Overflow.
     
    MarconiusDMM, Mar 11, 2020
    #1

  2. Stephan_B

    Stephan_B

    Unity Technologies

    Joined:
    Feb 26, 2017
    Posts:
    6,588
    Could you please provide some reproduction project / scene for me to look at as this behavior will be very dependent on the text used, font asset and RectTransform width, etc.

    It should be a trivial fix once I am able to reproduce it.
     
    Stephan_B, Mar 11, 2020
    #2

  3. MarconiusDMM

    MarconiusDMM

    Joined:
    Nov 24, 2017
    Posts:
    11
    Hey,

    I think it only happens when the main font I want to use doesn't have the characters for ellipses in it (which is not that unusual for Asian fonts, for example). So it tries to fall back to a different font that does, but that fails. If I put in the fallback font directly, it works.

    Here's some sample fonts:
    https://mega.nz/#!yYBzGSaJ!0B-Eopq3p0L_K1N0ERxEhpkcOCm37g-5-kXJVyDblD0
    I basically have a Static font that falls back on a Dynamic font (they look the same, but different character tables). The Static one causes the error; the Dynamic one used directly works.
     
    MarconiusDMM, Mar 12, 2020
    #3

  4. Stephan_B

    Stephan_B

    Unity Technologies

    Joined:
    Feb 26, 2017
    Posts:
    6,588
    As it turns out the issue is related to the End of Text \u0003 character which is an Ignorable / synthesized character which unfortunately was not getting added to existing font assets.

    This will be fixed in Preview 8 which should be available over the weekend.
     
    Stephan_B, Mar 12, 2020
    #4

  5. MarconiusDMM

    MarconiusDMM

    Joined:
    Nov 24, 2017
    Posts:
    11
    Awesome!
    Will this require existing font assets to be updated in some way?
     
    MarconiusDMM, Mar 12, 2020
    #5

  6. Stephan_B

    Stephan_B

    Unity Technologies

    Joined:
    Feb 26, 2017
    Posts:
    6,588
    It will not require any changes to font assets.

    I have also made an additional change where in the event Text Overflow Ellipsis mode is selected with no Ellipsis character available, a warning will be issues and Text Overflow mode switched to Truncate instead.
     
    Stephan_B, Mar 12, 2020
    #6

  7. MarconiusDMM

    MarconiusDMM

    Joined:
    Nov 24, 2017
    Posts:
    11
    This seems to work good with preview8 now.
     
    MarconiusDMM, Mar 19, 2020
    #7
    Stephan_B likes this.