WatchyWatchFace/src/SevenSegment.cpp

#include "SevenSegment.h"

SevenSegment::SevenSegment(uint16_t digitWidth, uint16_t digitHeight, uint16_t digitGap, uint16_t segmentThickness, uint16_t segmentGap)
  : m_digitWidth(digitWidth), m_digitHeight(digitHeight), m_digitGap(digitGap), m_segmentThickness(segmentThickness), m_segmentGap(segmentGap)
{
}

void SevenSegment::DrawDigit(GxEPD2_BW<WatchyDisplayBase, WatchyDisplayBase::HEIGHT> & display, uint8_t digit, uint16_t x, uint16_t y, uint8_t color)
{
  if (digit > 9) {
    return;
  }

  uint16_t digitX = x;
  uint16_t digitY = y;

  // top top-right bottom-right bottom bottom-left top-left middle

  const bool drawSegments[10][7] = {
    { true, true, true, true, true, true, false },
    { false, true, true, false, false, false, false },
    { true, true, false, true, true, false, true },
    { true, true, true, true, false, false, true },
    { false, true, true, false, false, true, true },
    { true, false, true, true, false, true, true },
    { false, false, true, true, true, true, true },
    { true, true, true, false, false, false, false },
    { true, true, true, true, true, true, true },
    { true, true, true, true, false, true, true }
  };

  const bool * segments = drawSegments[digit];

  // Top
  if (segments[0]) {
    display.fillRect(digitX + m_segmentThickness, digitY, m_digitWidth - 2 * m_segmentThickness, m_segmentThickness, color);
  } else {
    display.fillRect(digitX + m_segmentThickness, digitY, m_digitWidth - 2 * m_segmentThickness, m_segmentThickness, color ^ 0xFF);
  }

  // Top-right
  if (segments[1]) {
    display.fillRect(digitX + m_digitWidth - m_segmentThickness, digitY + m_segmentThickness, m_segmentThickness, m_digitHeight / 2 - m_segmentThickness * 2, color);
  } else {
    display.fillRect(digitX + m_digitWidth - m_segmentThickness, digitY + m_segmentThickness, m_segmentThickness, m_digitHeight / 2 - m_segmentThickness * 2, color ^ 0xFF);
  }

  // Bottom-right
  if (segments[2]) {
    display.fillRect(digitX + m_digitWidth - m_segmentThickness, digitY + m_digitHeight / 2, m_segmentThickness, m_digitHeight / 2 - m_segmentThickness * 2, color);
  } else {
    display.fillRect(digitX + m_digitWidth - m_segmentThickness, digitY + m_digitHeight / 2, m_segmentThickness, m_digitHeight / 2 - m_segmentThickness * 2, color ^ 0xFF);
  }

  // Bottom
  if (segments[3]) {
    display.fillRect(digitX + m_segmentThickness, digitY + m_digitHeight - m_segmentThickness * 2, m_digitWidth - 2 * m_segmentThickness, m_segmentThickness, color);
  } else {
    display.fillRect(digitX + m_segmentThickness, digitY + m_digitHeight - m_segmentThickness * 2, m_digitWidth - 2 * m_segmentThickness, m_segmentThickness, color ^ 0xFF);
  }

  // Bottom-left
  if (segments[4]) {
    display.fillRect(digitX, digitY + m_digitHeight / 2, m_segmentThickness, m_digitHeight / 2 - m_segmentThickness * 2, color);
  } else {
    display.fillRect(digitX, digitY + m_digitHeight / 2, m_segmentThickness, m_digitHeight / 2 - m_segmentThickness * 2, color ^ 0xFF);
  }

  // Top-left
  if (segments[5]) {
    display.fillRect(digitX, digitY + m_segmentThickness, m_segmentThickness, m_digitHeight / 2 - m_segmentThickness * 2, color);
  } else {
    display.fillRect(digitX, digitY + m_segmentThickness, m_segmentThickness, m_digitHeight / 2 - m_segmentThickness * 2, color ^ 0xFF);
  }

  // Middle
  if (segments[6]) {
    display.fillRect(digitX + m_segmentThickness, digitY + m_digitHeight / 2 - m_segmentThickness, m_digitWidth - 2 * m_segmentThickness, m_segmentThickness, color);
  } else {
    display.fillRect(digitX + m_segmentThickness, digitY + m_digitHeight / 2 - m_segmentThickness, m_digitWidth - 2 * m_segmentThickness, m_segmentThickness, color ^ 0xFF);
  }
}