Arduino IDE Warnings using drawString

[TobbeG]

Why do I get warnings using Arduini IDE to compile code for ESP32-S3 using LovyanGFX library and what should I do to fix this - I have no declaration in my code for "drawString(....)" ?

In file included from C:\Users\XXXXXX\Ohmigo.server_3.1.1\Ohmigo.server_3.1.1.ino:464:

C:\Users\XXXXXX\Dropbox\Ohmigo.server_3.1.1\Display.h:144:114: warning: 'size_t lgfx::v1::LGFXBase::drawString(const String&, int32_t, int32_t, uint8_t)' is deprecated: use IFont [-Wdeprecated-declarations]

In file included from C:\Users\XXXXXX\Dropbox\MAS\libraries\arduino_188415\src/lgfx/v1_init.hpp:25,
from C:\Users\XXXXXX\libraries\arduino_188415\src/LovyanGFX.hpp:31,
from C:\Users\XXXXXX\Ohmigo.server_3.1.1\ElecrowSettings.h:2,
from C:\Users\XXXXXX\Ohmigo.server_3.1.1\Ohmigo.server_3.1.1.ino:220:

C:\Users\Thorbj rn Geiser O\Dropbox\MAS\libraries\arduino_188415\src/lgfx/v1/LGFXBase.hpp:682:19: note: declared here

 **inline size_t drawString(const String& string, int32_t x, int32_t y, uint8_t      font) { return draw_string(string.c_str(), x, y, _text_style.datum, fontdata[font]); }**
               ^~~~~~~~~~

Thank you for helping out!

[tobozo]

hi,

warning: 'size_t lgfx::v1::LGFXBase::drawString(const String&, int32_t, int32_t, uint8_t)' is deprecated: use IFont [-Wdeprecated-declarations]

the deprecation message means you shouldn't use tft.drawString("blah", x, y, fontNumber) but drawString("blah", x, y, font) where font is one of the listed fonts:

tft.drawString("blah", x, y, &fonts::FreeMono18pt7b));

this is the same as doing this:

tft.setFont(&fonts::FreeMono18pt7b);
tft.drawString("blah", x, y);

[TobbeG]

OK Got it.

Which font is default?

[tobozo]

that would be the first in the list fonts::Font0, using tft.setFont(nullptr) should have the same effect

[TobbeG]

So what shall i replace ???? with if i am using default and swapped foonts only by using settextfont(1) and (2) ?

settextfont(1) -------------->>> drawString("blah", x, y, ?????? )

settextfont(2) -------------->>> drawString("blah", x, y, ?????? )

Thank you for your kind assistant!
Best
Thorbjörn

[tobozo]

hi,

settextfont(1) ~= setFont( &fonts::Font0 );

settextfont(2) ~= setFont( &fonts::Font2;

[TobbeG]

So in my case I just saw I use a few more, but I guess it shall be like this then?

drawString("blah", x, y, 1 ) -->> drawString("blah", x, y, &fonts::Font1 )
drawString("blah", x, y, 2 ) -->> drawString("blah", x, y, &fonts::Font2 )
drawString("blah", x, y, 4 ) -->> drawString("blah", x, y, &fonts::Font4 )
drawString("blah", x, y, 6 ) -->> drawString("blah", x, y, &fonts::Font6 )

Correct?

[tobozo]

yes it would be like this if font numbering made sense, but it doesnt, so don't expect any consistency with the source you got those font numbers from

for example LovyanGFX's Font0 and TFT_eSPI's Font1 are both GLCD fonts but with a potentially different size, so trying to match font by index number will lead to mismatches