WhyCan Forum(哇酷开发者社区)

static const uint8_t*
lv_font_get_bitmap_freetype(const struct _lv_font_struct *font, uint32_t unicode_letter)
{   
  return bitmap;
}

static int16_t
lv_font_get_width_freetype(const struct _lv_font_struct *font, uint32_t unicode_letter)
{
  /*Check the range*/
  if(unicode_letter < font->unicode_first || unicode_letter > font->unicode_last) return -1;
   
  FT_Error err  = FT_Load_Char(face, unicode_letter, FT_LOAD_RENDER);
  if (err == 0) {
    lv_font_freetype.bpp = 8;
    lv_font_freetype.bitmap_dx = face->glyph->bitmap_left;
    lv_font_freetype.bitmap_dy = lv_font_freetype.monospace - face->glyph->bitmap_top;
    lv_font_freetype.bitmap_row = face->glyph->bitmap.rows;
    bitmap = face->glyph->bitmap.buffer;
   
    return face->glyph->bitmap.width;
  }

  bitmap = NULL;
  return -1;
}

代码很简单的，但是修改了部分的LV代码