.vlw fonts not supported like in TFT_eSPI?

[yucandu]

In TFT_eSPI, to get nice smooth anti-aliased fonts, you can create a .VLW font in Processing, upload it to SPIFFS/LittleFS flash, and then load it like:

tft.loadFont("/Calibri_24.vlw", LittleFS); 

Unfortunately this does not work in LovyanGFX: "no matching function for call to 'lgfx::v1::LGFX_Sprite::loadFont(const char [9], fs::LittleFSFS&)'".

None of the other methods word, either, like:

File f = LittleFS.open("/Calibri_24.vlw", "r");
if (!f) {
  Serial.println("Font file open failed!");
} else {
  tft.loadFont(f);   // <-- works
}

Or even just

tft.loadFont("/Calibri_24.vlw");

The only thing that DOES work is converting it to a .h array using this site:

https://notisrac.github.io/FileToCArray/

And then we can load it with

img.loadFont(Calibri_48);

However these .h array files are 4x the size! To get a nice 100pt font on a display this way is ~400KB for a .vlw file, or 2MB for a .h array. These are too big to use, hence the need for full .vlw support like in TFT_eSPI.

Thank you for your wonderful library and your dedication and time!

[tobozo]

Hi,

with lfgx the filesystem and filename arguments are in the following order:

tft.loadFont(LittleFS, "/Calibri_24.vlw"); 

loading fonts from LittleFS can be glitchy though, .h array files are better

However these .h array files are 4x the size!

4x the size of the binary? it's only the source file, it won't use more flash space than the original binary

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