touchGFX and snprintf function

Hi @Professional​,

I don't remember if we touched on this in another post or if i missed this completely.

"special" characters are not that special, they're represented by unicodes like any other char. é: Unicode Character 'LATIN SMALL LETTER E WITH ACUTE' (U+00E9).

If the glyph is in your font then its possible to generate by the fontconverter. What are you seeing in your application? Did you get anywhere on your own since i took so long to answer?

/Martin

Hello

thanks for you reply. The call to

Unicode::snprintf(start_txt_next_service_valueBuffer, START_TXT_NEXT_SERVICE_VALUE_SIZE, "%s", TypedText(T_START_NEXT_SERVICE_DAYS).getText());

doesn't work (i have ? printed instead of é or è).

What should i do to be sure i have all the glyph (é à è ü...) in my font using sprintf function ?

thanks

best regards

Check your /generated/fonts folder for the particular typography you're using with that textarea. See if the unicode has been generated. If not, then you'll see the fallback char "?"

Hello,

thanks for your reply, so to be sure all special characters are generated, it is better to add them in wildcard charracters column of all fonts ?

best regards

Hi @Professional​,

You can add an entire range if you want to be sure you've generated everything. The font converter does the following:

1. Generate glyphs for all static strings
2. Generate glyphs for wildcard ranges if unicodes not found in 1)
3. Generate glyphs for specific wildcard unicodes if not found in 1) and 2)

So, in your case, if you just want your static texts + a few extra glyphs, then you would just add a few extra wildcard characters as needed. No need to generate more than necessary, because it will take up flash memory.

/Martni

Hello,

thanks for your reply

but the Unicode::snprintf(start_txt_next_service_valueBuffer, START_TXT_NEXT_SERVICE_VALUE_SIZE, "%s", TypedText(T_START_SERVICE_LINE2_NUM14).getText());

doesn't work even with adding the characters in the fonts :

(i verified in the fonts used by the ressource T_START_SERVICE_LINE2_NUM14 that the characters are generated)

I should display "prévue" and "pr?vue" is printed.

I have them in the font file

  // Unicode: [0x00D3, Oacute]

   0x00, 0x00, 0x70, 0x02, 0x00, 0x00, 0x00, 0xA5, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00,

   0xC4, 0xEE, 0x2B, 0x00, 0x40, 0x4E, 0x00, 0xE6, 0x01, 0xC0, 0x06, 0x00, 0xA0, 0x08, 0xF0, 0x01,

   0x00, 0x50, 0x0C, 0xF2, 0x00, 0x00, 0x30, 0x0E, 0xF2, 0x00, 0x00, 0x30, 0x0E, 0xF0, 0x01, 0x00,

   0x50, 0x0C, 0xC0, 0x06, 0x00, 0xA0, 0x08, 0x40, 0x3E, 0x00, 0xE6, 0x01, 0x00, 0xC4, 0xEE, 0x2B,

   0x00,

   // Unicode: [0x00E8, egrave]

   0x00, 0xA7, 0x00, 0x00, 0x00, 0xA0, 0x02, 0x00, 0x00, 0x00, 0x01, 0x00, 0x20, 0xDB, 0x5D, 0x00,

   0xD0, 0x04, 0xD1, 0x02, 0xD3, 0x00, 0x80, 0x07, 0xF4, 0xCC, 0xDC, 0x08, 0xD3, 0x00, 0x00, 0x00,

   0xD0, 0x04, 0xB0, 0x04, 0x20, 0xCB, 0x8D, 0x00,

   // Unicode: [0x00E9, eacute]

   0x00, 0x20, 0x1E, 0x00, 0x00, 0xA0, 0x03, 0x00, 0x00, 0x10, 0x00, 0x00, 0x20, 0xDB, 0x5D, 0x00,

   0xD0, 0x04, 0xD1, 0x02, 0xD3, 0x00, 0x80, 0x07, 0xF4, 0xCC, 0xDC, 0x08, 0xD3, 0x00, 0x00, 0x00,

   0xD0, 0x04, 0xB0, 0x04, 0x20, 0xCB, 0x8D, 0x00,

What can be the problem ?

best regards

Hi again,

Okay, so the glyph is actually being generated. Great. I think i'll have to come up with an example when i get a little time.

/Martin

Something to try on your own in the meantime - Does this make sense? Maybe it's an editor thing where it does not recognize the entered special symbol properly. Just explicitly name the unicodes and copy it to the buffer like this:

	Unicode::UnicodeChar buf[] = { 0x00E9, 0 /*termination*/ };
	Unicode::snprintf(wildcardBuffer, 2, "%s", buf);

/Martin

Hello,

no your code it doesn't work : also a ? printed

Here is the designer containt

in the ressource tab (prévue string contains é character that is printed with a ?:

and special characters are declared:

your code    Unicode::snprintf(start_txt_next_service_valueBuffer, 2, "%s", buf); prints a "?"

my code Unicode::snprintf(start_txt_next_service_valueBuffer, START_TXT_NEXT_SERVICE_VALUE_SIZE, "%s", TypedText(T_START_SERVICE_LINE2_NUM14).getText()); 

prints "pr?vue"

   start_txt_next_service_value.setVisible(true);

   start_txt_next_service_value.invalidate();

So don't know where the problem is : the containt of the start_txt_next_service_valueBuffer is correct:

Here is the declartion of variables :

touchgfx::TextAreaWithOneWildcard start_txt_next_service_value;

   /*

    * Wildcard Buffers

    */

   static const uint16_t START_TXT_NEXT_SERVICE_VALUE_SIZE = 50;

   touchgfx::Unicode::UnicodeChar start_txt_next_service_valueBuffer[START_TXT_NEXT_SERVICE_VALUE_SIZE];

thanks for your support