Custom font TFT LCD ST7735 not working perfectly

[thinhtong]

i got a small project and some problems. When I used custom fonts from GFX library its not support for function "tft.setTextColor(ST7735_WHITE,ST7735_BLACK);"I use them and they overlap, can only be used for default font. i wonder how to fix it or customize it as my project.

[thinhtong]

I really need help, pleaseeee!!!!!

[david_2018]

See this page https://learn.adafruit.com/adafruit-gfx-graphics-library/using-fonts

About halfway down that webpage you will see the following:

One “gotcha” to be aware of with new fonts: there is no “background” color option…you can set this value but it will be ignored.

This is on purpose and by design.

The background color feature is sometimes used with the “classic” font to overwrite old screen contents with new data. This only works because those characters are a uniform size; that won’t work with proportionally-spaced fonts, where the bounds of a string can vary, and an indeterminate number of characters may overlap the same region.

It goes on to suggests methods of erasing the old text before writing new text, although not mentioned is the method of erasing the old text by overwriting with the same text with the text color set to the background color.