wordclock/libraries/States/ViewDateState.cpp

#include <ViewStates.h>

ViewDateState::ViewDateState(DS3231 &_ds3231, AT24C32 &_at24c32, char _delimiter) : ViewTextState(at24c32)
{
  ds3231 = _ds3231;
  at24c32 = _at24c32;
  delimiter = _delimiter;
  renderOffset = (millis() / TEXT_INTERVAL);
};

void ViewDateState::render(uint8_t matrix[121], ControlStates controlState)
{

  bool const blink = (millis() / CONTROL_BLINK_INTERVAL) % 2 == 0;

  length = 0;
  position = 0;

  uint8_t date = ds3231.getDate();
  uint8_t month = ds3231.getMonth();
  int16_t year = ds3231.getYear();

  if (controlState == ControlStates::DATE_DATE && blink)
  {
    length = 2;
    text[0] = (date / 10) + 0x30;
    text[1] = (date % 10) + 0x30;
    ViewTextState::writeChars(matrix);
  }
  else if (controlState == ControlStates::DATE_MONTH && blink)
  {
    length = 2;
    text[0] = (month / 10) + 0x30;
    text[1] = (month % 10) + 0x30;
    ViewTextState::writeChars(matrix);
  }
  else if (controlState == ControlStates::DATE_YEAR && blink)
  {
    if (year == 2000 || year == 1900)
    {
      length = 4;
      text[0] = ((year / 100) / 10) + 0x30;
      text[1] = ((year / 100) % 10) + 0x30;
      position = (millis() / TEXT_INTERVAL) % length;
    }
    else
    {
      length = 2;
    }
    if (year > 1999)
    {
      year = year - 2000;
    }
    else
    {
      year = year - 1900;
    }

    text[length - 2] = (year / 10) + 0x30;
    text[length - 1] = (year % 10) + 0x30;

    ViewTextState::writeChars(matrix);
  }
  else if (controlState != ControlStates::DATE_DATE && controlState != ControlStates::DATE_MONTH && controlState != ControlStates::DATE_YEAR)
  {
    length = 10;
    text[0] = (date / 10) + 0x30;
    text[1] = (date % 10) + 0x30;

    text[2] = char(delimiter);

    text[3] = (month / 10) + 0x30;
    text[4] = (month % 10) + 0x30;

    text[5] = char(delimiter);

    text[6] = ((year / 100) / 10) + 0x30;
    text[7] = ((year / 100) % 10) + 0x30;
    if (year > 1999)
    {
      text[8] = ((year - 2000) / 10) + 0x30;
      text[9] = ((year - 2000) % 10) + 0x30;
    }
    else
    {
      text[8] = ((year - 1900) / 10) + 0x30;
      text[9] = ((year - 1900) % 10) + 0x30;
    }

    position = (millis() / TEXT_INTERVAL - renderOffset - 1) % length;
    ViewTextState::writeChars(matrix);
  }

  renderBinaryClock(matrix, ds3231);
};