Method drawCursor

app/src/UI/Widgets/Terminal.cpp:281–337

* @brief Draws the blinking cursor at the current cursor position. */

 * @brief Draws the blinking cursor at the current cursor position.
 */
void Widgets::Terminal::drawCursor(QPainter* painter, int firstLine, int lastVLine, int lineHeight)
{
  const int cursorLine = m_cursorPosition.y();
  const int cursorCol  = m_cursorPosition.x();
  const bool rtl       = Misc::Translator::instance().rtl();
  const int emptyCursorX =
    rtl ? (width() - m_borderX - painter->fontMetrics().horizontalAdvance(QChar(0x2588)))
        : m_borderX;

  int visualLineY  = m_borderY;
  bool cursorDrawn = false;

  for (int i = firstLine; i <= lastVLine && i < m_data.size(); ++i) {
    const QString& line = m_data[i];

    if (line.isEmpty()) {
      if (i == cursorLine) {
        painter->setPen(m_palette.color(QPalette::Text));
        // code-verify off
        painter->drawText(emptyCursorX, visualLineY + m_cHeight, QStringLiteral("█"));
        // code-verify on
        cursorDrawn = true;
        break;
      }
      visualLineY += lineHeight;
      continue;
    }

    int start = 0;
    while (start < line.length()) {
      const int end = qMin<int>(start + maxCharsPerLine(), line.length());

      if (i == cursorLine && cursorCol >= start && cursorCol <= end) {
        const int cursorX = calcCursorPixelX(painter, line, start, cursorCol, end);
        painter->setPen(m_palette.color(QPalette::Text));
        // code-verify off
        painter->drawText(cursorX, visualLineY + m_cHeight, QStringLiteral("█"));
        // code-verify on
        cursorDrawn = true;
        break;
      }

      visualLineY += lineHeight;
      start        = end;
    }

    if (cursorDrawn)
      break;
  }

  if (!cursorDrawn && cursorLine >= m_data.size()) {
    painter->setPen(m_palette.color(QPalette::Text));
    // code-verify off
    painter->drawText(emptyCursorX, visualLineY + m_cHeight, QStringLiteral("█"));
    // code-verify on
  }
}