1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
# Fonts
* [Jetbrains Mono](https://www.jetbrains.com/fr-fr/lp/mono/)
* [Awesome font from LVGL](https://lvgl.io/assets/others/FontAwesome5-Solid+Brands+Regular.woff)
* [Open Sans Light from Google](https://fonts.google.com/specimen/Open+Sans)
## Generate the fonts:
* Open the [LVGL font converter](https://lvgl.io/tools/fontconverter)
* Enter the settings for the font that you wish to convert
* Click on Convert, download the file and place it in `src/DisplayApp/Fonts`
### How to add new symbols:
* Browse [this cheatsheet](https://fontawesome.com/cheatsheet/free/solid) and pick symbols
* For each symbol, add its hex code (0xf641 for the 'Ad' icon, for example) to the *Range* list (Remember to keep this
readme updated with newest range list)
* Convert this hex value into a UTF-8 code
using [this site](http://www.ltg.ed.ac.uk/~richard/utf-8.cgi?input=f185&mode=hex)
* Define the new symbols in `src/displayapp/screens/Symbols.h`:
```
static constexpr const char* newSymbol = "\xEF\x86\x85";
```
### Small font
* Name: jetbrains_mono_bold_20
* Size: 20
* Bpp: 1 bit-per-pixel
* Do not enable font compression or horizontal subpixel rendering
* Load the file `JetBrainsMono-Bold.tff` (use the file in this repo to ensure the version matches) and specify the following range: `0x20-0x7e, 0x410-0x44f`
* Add a 2nd font, load the file `FontAwesome5-Solid+Brands+Regular.woff` and specify the following
range: `0xf293, 0xf294, 0xf244, 0xf240, 0xf242, 0xf243, 0xf241, 0xf54b, 0xf21e, 0xf1e6, 0xf54b, 0xf017, 0xf129, 0xf03a, 0xf185, 0xf560, 0xf001, 0xf3fd, 0xf069, 0xf1fc, 0xf45d, 0xf59f, 0xf5a0, 0xf029, 0xf027, 0xf028, 0xf6a9, 0xf04b, 0xf04c, 0xf048, 0xf051, 0xf095, 0xf3dd, 0xf04d, 0xf2f2, 0xf024, 0xf252, 0xf569, 0xf201, 0xf06e, 0xf015, 0xf072`
* Fix an error in the font conversion.
Replace the following:
/* U+0030 "0" */
0x3f, 0x1f, 0xef, 0x3f, 0x87, 0xe1, 0xf8, 0x7f,
0xdf, 0xf7, 0xe1, 0xf8, 0x7e, 0x1f, 0xcf, 0x7f,
0x8f, 0xc0,
with
/* U+0030 "0" */
0x3f, 0x1f, 0xef, 0x3f, 0x87, 0xe1, 0xf8, 0x7e,
0xdf, 0xb7, 0xe1, 0xf8, 0x7e, 0x1f, 0xcf, 0x7f,
0x8f, 0xc0,
(there are two changes: 7f -> 7e and f7 -> b7)
### Medium font
* Name: jetbrains_mono_42
* Size: 42
* Bpp: 1 bit-per-pixel
* Do not enable font compression or horizontal subpixel rendering
* Load the file `JetBrainsMono-Regular.tff` (use the file in this repo to ensure the version matches) and specify the following range: `0x25, 0x30-0x3a`
### Large font
* Name: jetbrains_mono_76
* Size: 76
* Bpp: 1 bit-per-pixel
* Do not enable font compression or horizontal subpixel rendering
* Load the file `JetBrainsMono-Regular.tff` (use the file in this repo to ensure the version matches) and specify the following range: `0x25, 0x2D, 0x2F, 0x30-0x3a`
### Digital watchface font
* Name: jetbrains_mono_extrabold_compressed
* Size: 80
* Bpp: 1 bit-per-pixel
* Do not enable font compression or horizontal subpixel rendering
* Load the file `JetBrainsMono-ExtraBold.tff` (use the file in this repo to ensure the version matches) and specify the following range: `0x30-0x3a`
### PineTimeStyle font
* Name: open_sans_light
* Size: 150
* Bpp: 1 bit-per-pixel
* Do not enable font compression or horizontal subpixel rendering
* Load the file `open_sans_light.tff` (use the file in this repo to ensure the version matches) and specify the following symbols: `0123456789`
### Symbols font (Used in QuickSettings for example)
* Name: lv_font_sys_48
* Size: 48
* Bpp: 1 bit-per-pixel
* Do not enable font compression or horizontal subpixel rendering
* Load the file `icons_sys_48.tff` (use the file in this repo to ensure the version matches) and specify the following range: `0xe902, 0xe904-0xe907, 0xe90b-0xe90c`
#### Navigation font
To create the navigtion.ttf I use the web app [icomoon](https://icomoon.io/app)
this app can import the svg files from the folder *src/displayapp/icons/navigation/unique* and create a ttf file the
project for the site is *lv_font_navi_80.json* you can import it to add or remove icons
You can also use the online LVGL tool to create the .c
ttf file : navigation.ttf name : lv_font_navi_80 size : 80px Bpp : 2 bit-per-pixel range : 0xe900-0xe929
$lv_font_conv --font navigation.ttf -r '0xe900-0xe929' --size 80 --format lvgl --bpp 2 --no-prefilter -o
lv_font_navi_80.c
|
