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adafruit / Adafruit-GFX-Library

Adafruit GFX graphics core Arduino library, this is the 'core' class that all our other graphics libraries derive from
https://learn.adafruit.com/adafruit-gfx-graphics-library
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Please provide very small font sizes in default repository. #161

Open baryluk opened 6 years ago

baryluk commented 6 years ago

Hi,

It would be nice to include few smaller sizes

3x3 4x3 5x3 5x4

(the glyph sizes, no margin included). Usage of kerning for some glyphs would also be beneficial, to squeeze max of space.

As well add option to not add interline or spaces between characters. I do have 320x240 LCD display using IDL9340, and the default 8x5 is very nice, but because I use it to display various diagnostic data in real time, having bigger density is a huge plus.

For the smallest fonts (3x3 and 4x3), I also force glyphs to be upper case before passing to print(char) method. But even lower cases are somehow usable. Especially if user knows what is on display in terms of text (just some labels and units that do not change). The numbers are also distinct and readable enough.

Another option to research is to have grayscale fonts, instead of just bitmap, as usage of additional color gradations could improve some small fonts (by fuzzing some corners similar to subpixel rendering). They can be all pre-computed offline too.

I know I could do that all myself, but I am certain many other people would benefit of having this in official repo :)

myhd commented 5 years ago

I think a 3x3 pixel font will be rather useless.

pljakobs commented 5 years ago

this is a 6x4 (or 6x3 if you don't count the spacing) and I think it's already very hard to read. Not sure if that kind of font really makes any sense at all. It shouldn't be a huge amount of work, though, to create the corresponding tables manually. I wonder, though, picopixel already provides a 6 pixel height font - I guess that would be the same thing.

baryluk commented 5 years ago

Nevermind, I found 3x3 and 5x3 in default repo. They work nice for me.

alechudson commented 5 years ago

Nevermind, I found 3x3 and 5x3 in default repo. They work nice for me.

Where did you find this? I'm trying to drive a matrix and the text is a bit too large.

sergiitk commented 5 years ago

They're in Fonts/, just labeled by their name. As of June 2019, here's what's available:

StefanL38 commented 4 years ago

There is a solution for a lot of fonts. On the website http://oleddisplay.squix.ch/#/home

You can choose from fonts and can choose the SIZE of the font and it will create the header-file! Then you can copy & paste this headerfile into a texteditor and save it with .h to the C:\Users\username\Documents\Arduino\libraries\Adafruit_GFX_Library\Fonts-Folder

Please donate Daniel Eichhorn the author of this service at least 1 dollar for a beer. https://www.paypal.me/squix78

cheers Daniel Great work!