message: Tweak RangeHistogram painting to better adjust to palettes
diff: @@ -222,7 +222,6 @@ void RangeHistogram::paintEvent(QPaintEvent *e)
  p.setRenderHint(QPainter::Antialiasing);
  const QBrush blackBrush(QColor(0, 0, 0));
  - const QBrush grayBrush(QColor(180, 180, 180));
  const QBrush redBrush(QColor(60, 0, 0));
  const QBrush greenBrush(QColor(0, 128, 0));
  const QBrush whiteBrush(QColor(255, 255, 255));
  @@ -233,21 +232,28 @@ void RangeHistogram::paintEvent(QPaintEvent *e)
  r = r.marginsRemoved(QMarginsF(m_Margin, m_Margin, m_Margin, m_Margin));
  - p.fillRect(r, blackBrush);
  + p.fillRect(r, palette().brush(QPalette::Shadow));
  QMarginsF border(m_Border, m_Border, m_Border, m_Border);
  border /= devicePixelRatioF();
  r = r.marginsRemoved(border);
  - p.fillRect(r, ValidRange() ? grayBrush : redBrush);
  + p.fillRect(r, ValidRange() ? palette().brush(QPalette::Inactive, QPalette::Highlight) : redBrush);
  int whiteX = (int)(whiteDelta() * r.width());
  - int blackX = (int)(blackDelta() * r.width());
  + int blackX = (int)(blackDelta() * r.width() + 0.5);
  QRectF blackPoint(r.topLeft(), QSize(blackX, r.height()));
  QRectF whitePoint(r.left() + whiteX, r.top(), r.width() - whiteX, r.height());
  + if(ValidRange())
  + {
  + p.setPen(QPen(palette().color(QPalette::Dark)));
  + p.drawLine(blackPoint.topRight(), blackPoint.bottomRight());
  + p.drawLine(whitePoint.topLeft(), whitePoint.bottomLeft());
  + }
  +
  p.fillRect(whitePoint, whiteBrush);
  p.fillRect(blackPoint, blackBrush);
  @@ -295,14 +301,13 @@ void RangeHistogram::paintEvent(QPaintEvent *e)
  }
  }
  - QVector<QPointF> blackTriangle = {QPoint(blackPoint.right() + 1, m_MarkerSize * 2),
  - QPoint(blackPoint.right() + m_MarkerSize + 1, 0),
  - QPoint(blackPoint.right() - m_MarkerSize + 1, 0)};
  + QVector<QPointF> blackTriangle = {QPoint(blackPoint.right(), m_MarkerSize * 2),
  + QPoint(blackPoint.right() + m_MarkerSize, 0),
  + QPoint(blackPoint.right() - m_MarkerSize, 0)};
  QPainterPath blackPath;
  blackPath.addPolygon(QPolygonF(blackTriangle));
  -
  - p.fillPath(blackPath, grayBrush);
  + p.fillPath(blackPath, palette().brush(QPalette::Dark));
  QVector<QPointF> whiteTriangle = {
  QPoint(whitePoint.left(), whitePoint.bottom() - m_MarkerSize * 2 + m_Margin),
  @@ -311,7 +316,7 @@ void RangeHistogram::paintEvent(QPaintEvent *e)
  QPainterPath whitePath;
  whitePath.addPolygon(QPolygonF(whiteTriangle));
  - p.fillPath(whitePath, grayBrush);
  + p.fillPath(whitePath, palette().brush(QPalette::Dark));
  blackTriangle[0] -= QPointF(0.0, 2.0) / devicePixelRatioF();
  blackTriangle[1] += QPointF(-2.0, 1.0) / devicePixelRatioF();
  