TFT Text Sizes

[Wp100]

Hi,

Using a 320x240 TFT with the Adafruit libraries, but the standard SetText sizes are rather wide apart and to produce a neat looking display, we really need something between the SetText sizes of 2 and 3.

Does anyone know of an existing way to produce a Size of around 2.5 or of a free Font that has a Point size small enough ?

 

[Nigel Goodwin]

The set sizes are effectively just a single fixed font, and simply doubled up each time there's an increase in text size - hence their low quality as they get larger. Basically it's a simple solution, and economical on memory and program space - if you try and store larger fonts, or different fonts for each size, you soon start reaching memory limitations.

Have a read here:

Adafruit GFX Graphics Library

The Adafruit_GFX library for Arduino provides a common syntax and set of graphics functions for all of our LCD and OLED displays.

learn.adafruit.com

 

[Ian Rogers]

I write my own char print... You either store font widths in an array ( some chars are wider than others ) or strip out the un-needed.

Ie.. a 12 x 16 font will probably cover 10 pixels max but the smaller bits ie. points and comma's only need 3 at most.

Some fonts come with a char width array attached..

 

[Ian Rogers]

I actually misread your post... I thought you were concerned more for distance between characters

Looking at drawchar() it either puts a pixel or fills a square, so it doesn't look like you get in betweenies… It doubles the size so 1 pixel or 2x2 (4) pixels or 3x3 (9) pixels etc...

The font is 5x7 so you could get the 3 x 7 font from the KS0108 and rotate it to suit... ( but the font is a bit poo... )

 

[rjenkinsgb]

This may do what you need:
**broken link removed**

It can convert a truetype font to a bitmap, both pixel and character width data.

Try 12 point or 14 point source fonts for the type of size you need, at a guess?

 

[Ian Rogers]

This may do what you need:
**broken link removed**

It can convert a truetype font to a bitmap, both pixel and character width data.

Try 12 point or 14 point source fonts for the type of size you need, at a guess?

But be cautious… The print routine on the arduino will not deal with full colour... It only deals with mono fonts...