Description
I’ve created a custom font using the online font converter. The font only contains 3 symbols, no other characters. I’ve declared the font globally using #define LV_FONT_CUSTOM_DECLARE LV_FONT_DECLARE(lv_font_pinesymbols_16). When I enter some failing code within the font’s .c file, the compiler errors, so I’m sure the font compiles. I can also use it in the application, no linking errors either. Everything looks to be setup correctly, still I’m not seeing anything rendered. I’ve compared with the roboto font but I can’t see any problem so far. Still, when I use the default font and one of the build in symbols, everything is rendered correctly.
Any help would be appriciated.
What MCU/Processor/Board and compiler are you using?
Pinetime dev kit, mbed-os, Nordic NRF52832 MCU, ST7789 display.
What do you experience?
Compiles and builds, but my custom symbol is not rendering. Other things, such as build-in components and symbols render perfectly fine.
What do you expect?
Custom symbols to be properly rendered
Code to reproduce
icBatt = lv_label_create(lv_scr_act(), NULL);
static lv_style_t lbl_style_pinetimefonts16;
lv_style_copy(&lbl_style_pinetimefonts16, &lv_style_plain);
lbl_style_pinetimefonts16.text.font = &lv_font_pinesymbols_16; //Set a diferent font
lv_label_set_style(icBatt, LV_LABEL_STYLE_MAIN, &lbl_style_pinetimefonts16);
lv_obj_align(icBatt, NULL, LV_ALIGN_IN_TOP_RIGHT, 0, 0); // Align to the top
lv_obj_set_hidden(icBatt, false);
lv_label_set_text_fmt(icBatt, LV_SYMBOL_BATTERY_3QUARTERS);
#define LV_SYMBOL_BATTERY_CHARGING "\xef\x87\xa6" //0xf004
#define LV_SYMBOL_HEART "\xef\x80\x84" //0xf1e6
#define LV_SYMBOL_BATTERY_3QUARTERS "\xEF\x89\x81" //0xf241
I’d like to upload the font source file but I’m not allowed to do that as new user.
#include "lvgl/lvgl.h"
/*******************************************************************************
* Size: 16 px
* Bpp: 4
* Opts:
******************************************************************************/
#ifndef LV_FONT_PINESYMBOLS_16
#define LV_FONT_PINESYMBOLS_16 1
#endif
#if LV_FONT_PINESYMBOLS_16
/*-----------------
* BITMAPS
*----------------*/
/*Store the image of the glyphs*/
static LV_ATTRIBUTE_LARGE_CONST const uint8_t gylph_bitmap[] = {
/* U+F004 "" */
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x19, 0xef, 0xc4, 0x0, 0x4c, 0xfe,
0x91, 0x0, 0x1, 0xdf, 0xff, 0xff, 0x77, 0xff,
0xff, 0xfd, 0x10, 0x9, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x90, 0xe, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xe0, 0xf, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0xd, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xd0, 0x7,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x70,
0x0, 0xaf, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa,
0x0, 0x0, 0xb, 0xff, 0xff, 0xff, 0xff, 0xff,
0xb0, 0x0, 0x0, 0x0, 0xbf, 0xff, 0xff, 0xff,
0xfb, 0x0, 0x0, 0x0, 0x0, 0xc, 0xff, 0xff,
0xff, 0xc0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xcf,
0xff, 0xfc, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x1c, 0xff, 0xc0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x1, 0xcc, 0x10, 0x0, 0x0, 0x0,
/* U+F1E6 "" */
0x0, 0xcc, 0x0, 0x0, 0xcc, 0x0, 0x0, 0xff,
0x0, 0x0, 0xff, 0x0, 0x0, 0xff, 0x0, 0x0,
0xff, 0x0, 0x0, 0xff, 0x0, 0x0, 0xff, 0x0,
0x0, 0x88, 0x0, 0x0, 0x88, 0x0, 0xef, 0xff,
0xff, 0xff, 0xff, 0xfe, 0xef, 0xff, 0xff, 0xff,
0xff, 0xfe, 0xf, 0xff, 0xff, 0xff, 0xff, 0xf0,
0xf, 0xff, 0xff, 0xff, 0xff, 0xf0, 0xc, 0xff,
0xff, 0xff, 0xff, 0xc0, 0x5, 0xff, 0xff, 0xff,
0xff, 0x40, 0x0, 0x8f, 0xff, 0xff, 0xf8, 0x0,
0x0, 0x5, 0xcf, 0xfc, 0x50, 0x0, 0x0, 0x0,
0xf, 0xf0, 0x0, 0x0, 0x0, 0x0, 0xf, 0xf0,
0x0, 0x0, 0x0, 0x0, 0xf, 0xf0, 0x0, 0x0,
/* U+F241 "" */
0x8f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0x80, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xf0, 0xff, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0xf, 0xfd, 0xff, 0xf,
0xff, 0xff, 0xff, 0xff, 0xf0, 0x0, 0xf, 0xff,
0xff, 0xf, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x0,
0x0, 0xff, 0xff, 0xf, 0xff, 0xff, 0xff, 0xff,
0xf0, 0x0, 0x0, 0xff, 0xff, 0xf, 0xff, 0xff,
0xff, 0xff, 0xf0, 0x0, 0xf, 0xff, 0xff, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xf, 0xfd,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xf0, 0x8f, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x80
};
/*---------------------
* GLYPH DESCRIPTION
*--------------------*/
static const lv_font_fmt_txt_glyph_dsc_t glyph_dsc[] = {
{.bitmap_index = 0, .adv_w = 0, .box_w = 0, .box_h = 0, .ofs_x = 0, .ofs_y = 0} /* id = 0 reserved */,
{.bitmap_index = 0, .adv_w = 256, .box_w = 18, .box_h = 15, .ofs_x = -1, .ofs_y = -1},
{.bitmap_index = 135, .adv_w = 192, .box_w = 12, .box_h = 16, .ofs_x = 0, .ofs_y = -2},
{.bitmap_index = 231, .adv_w = 320, .box_w = 20, .box_h = 10, .ofs_x = 0, .ofs_y = 1}
};
/*---------------------
* CHARACTER MAPPING
*--------------------*/
static const uint16_t unicode_list_0[] = {
0x0, 0x1e2, 0x23d
};
/*Collect the unicode lists and glyph_id offsets*/
static const lv_font_fmt_txt_cmap_t cmaps[] =
{
{
.range_start = 61444, .range_length = 574, .glyph_id_start = 1,
.unicode_list = unicode_list_0, .glyph_id_ofs_list = NULL, .list_length = 3, .type = LV_FONT_FMT_TXT_CMAP_SPARSE_TINY
}
};
/*--------------------
* ALL CUSTOM DATA
*--------------------*/
/*Store all the custom data of the font*/
static lv_font_fmt_txt_dsc_t font_dsc = {
.glyph_bitmap = gylph_bitmap,
.glyph_dsc = glyph_dsc,
.cmaps = cmaps,
.kern_dsc = NULL,
.kern_scale = 0,
.cmap_num = 1,
.bpp = 4,
.kern_classes = 0,
.bitmap_format = 0
};
/*-----------------
* PUBLIC FONT
*----------------*/
/*Initialize a public general font descriptor*/
lv_font_t lv_font_pinesymbols_16 = {
.get_glyph_dsc = lv_font_get_glyph_dsc_fmt_txt, /*Function pointer to get glyph's data*/
.get_glyph_bitmap = lv_font_get_bitmap_fmt_txt, /*Function pointer to get glyph's bitmap*/
.line_height = 16, /*The maximum line height required by the font*/
.base_line = 2, /*Baseline measured from the bottom of the line*/
#if !(LVGL_VERSION_MAJOR == 6 && LVGL_VERSION_MINOR == 0)
.subpx = LV_FONT_SUBPX_NONE,
#endif
.dsc = &font_dsc /*The custom font data. Will be accessed by `get_glyph_bitmap/dsc` */
};
#endif /*#if LV_FONT_PINESYMBOLS_16*/
