Method update

src/layui/layui/layLayoutViewConfigPages.cc:934–985

}

void 
LayoutViewConfigPage4::update ()
{
  for (unsigned int i = 0; i < sizeof (cfg4_buttons) / sizeof (cfg4_buttons [0]); ++i) {

    QColor color;
    if (i < m_palette.colors ()) {
      color = QColor (m_palette.color_by_index (i));
    }

    QColor text_color = color.green () > 128 ? QColor (0, 0, 0) : QColor (255, 255, 255);

    QString text = QString::fromUtf8 ("  "); 
    for (unsigned int j = 0; j < m_palette.luminous_colors (); ++j) {
      if (i == m_palette.luminous_color_index_by_index (j)) {
        text = tl::to_qstring (tl::sprintf ("%d", j));
        break;
      }
    }

#if QT_VERSION > 0x050000
    double dpr = devicePixelRatio ();
#else
    double dpr = 1.0;
#endif

    QFontMetrics fm (font (), this);
    QRect rt (fm.boundingRect (QString::fromUtf8 ("AA")));

    const unsigned int h = rt.height () + 10;
    const unsigned int w = rt.width () + 10;

    QImage img (w * dpr, h * dpr, QImage::Format_RGB32);
#if QT_VERSION > 0x050000
    img.setDevicePixelRatio (dpr);
#endif

    QPainter painter (&img);
    QRectF r (0.0, 0.0, w, h);
    painter.fillRect (r, QBrush (palette ().color (QPalette::Active, QPalette::ButtonText)));
    r = QRectF (1.0, 1.0, w - 2.0, h - 2.0);
    painter.fillRect (r, QBrush (color));
    painter.setFont (font ());
    painter.setPen (QPen (text_color));
    painter.drawText (r, Qt::AlignHCenter | Qt::AlignVCenter | Qt::TextSingleLine, text);

    QPixmap pxmp = QPixmap::fromImage (img);
    (mp_ui->*(cfg4_buttons [i]))->setIconSize (QSize (w, h));
    (mp_ui->*(cfg4_buttons [i]))->setIcon (QIcon (pxmp));

  }
}

// ------------------------------------------------------------
//  LayoutConfigPage5 implementation