Skip to main content
ferro
ferro
Lead
November 14, 2023
Solved

How to check in application whether Binary Font needs to be installed

  • November 14, 2023
  • 1 reply
  • 1917 views

Hi,

When I select use Binary Font in GFX, I would like to determine this in my app so I install the font. How to do that please ?

Thank you

 

ferro_0-1699975741787.png

 

    This topic has been closed for replies.
    Best answer by Mohammad MORADI ESFAHANIASL

    Hello @ferro,

    There are no direct way to determine this, however, you can check if tables created for a font is empty or not. You can check this by using the getCharWidth(constUnicode::UnicodeChar c) for an arbitrary character. Just make sure that you have used this character with your font. If the character is available but BinaryFont is set, then the returned value from that function will be 0.
    I hope this helps

    1 reply

    M
    Mohammad MORADI ESFAHANIASLBest answer
    ST Employee
    November 20, 2023

    Hello @ferro,

    There are no direct way to determine this, however, you can check if tables created for a font is empty or not. You can check this by using the getCharWidth(constUnicode::UnicodeChar c) for an arbitrary character. Just make sure that you have used this character with your font. If the character is available but BinaryFont is set, then the returned value from that function will be 0.
    I hope this helps

    Mohammad MORADIST Software Developer | TouchGFX
      ferro
      ferroAuthor
      Lead
      November 21, 2023

      Hi @Mohammad MORADI ESFAHANIASL 

      Thanks. I did that but I realised asking for number of glyphs in a font is more pleasing approach (0 if font not installed/present) as we disscuss here:

      https://community.st.com/t5/stm32-mcus-touch-gfx-and-gui/how-to-get-number-of-glyphs-in-a-font/m-p/610254

      You can add a function to ConstFont.hpp file that returns the number of glyphs for you. For instance, add this function in the public section of the class definition:

      uint16_t getNumberOfGlyphs() const { return listSize; }

      then you can easily use it wherever you want. Like:

      const ConstFont* fn = (const ConstFont*)(textArea1.getTypedText().getFont());
uint16_t numberOfGlyphs = fn->getNumberOfGlyphs();
touchgfx_printf("%d\n",numberOfGlyphs);

      I hope this helps you, good luck

        M
        Mohammad MORADI ESFAHANIASL
        ST Employee
        November 28, 2023

        Nice to hear 

        Mohammad MORADIST Software Developer | TouchGFX
        Terms & ConditionsAccessibility statement