C++ QRectF::marginsRemoved方法代码示例

void IntervalProgressDisplay::EllipticalPaintStrategy::paint(QPainter &p, const PaintContext &context, const PaintColors &colors)
{
    qreal margin = context.elementsSize + 4;
    QRectF rect = createContextRect(context, margin);

    if (context.beatsPerInterval <= 32) {
        drawCircles(p, rect, context, colors, context.beatsPerInterval, 0, true);// draw a ellipse
    } else {
        int elementsInOuterEllipse = context.beatsPerInterval / 2;
        int elementsInNestedEllipse = context.beatsPerInterval - elementsInOuterEllipse;

        //draw the internal circles first, so external circles will appear in top
        qreal margin = context.elementsSize * 1.8;
        QMarginsF margins(margin, margin, margin, margin);
        bool drawPath = context.currentBeat >= elementsInOuterEllipse;
        drawCircles(p, rect.marginsRemoved(margins), context, colors, elementsInNestedEllipse, elementsInOuterEllipse, drawPath);

        //draw external circles
        if (context.currentBeat < elementsInOuterEllipse){ //only draw the external circles when playing the first part of interval
            drawCircles(p, rect, context, colors, elementsInOuterEllipse, 0, true);
        }
    }

    drawCurrentBeatValue(p, rect, context, colors);
}

QRectF PipelineFlowChart::totalAreaRect()
{
  QRectF rect = this->rect();

  qreal m = 6 + BoxBorderWidth;

  return rect.marginsRemoved(QMarginsF(m, m, m, m));
}

void Board::paintPoint(Point point, int index) {
    QRectF rect = Locator<Grid>()->getGridRect(point);
    qreal margin = Locator<Grid>()->getGridSize() * (1 - common::predefinedSize::CircleSizeOverGridSize);
    auto margins = QMarginsF(margin, margin, margin, margin);
    QRectF rectShrinked = rect.marginsRemoved(margins);
    auto circle = new QGraphicsEllipseItem(rectShrinked);
    auto itemID = common::VisibleItemID::Circle;
    QColor color = common::getColor(itemID, index);
    circle->setZValue(itemID);
    circle->setPen(Qt::NoPen);
    circle->setBrush(QBrush(color));
    itemList->addItem(circle);
}

void RangeHistogram::paintEvent(QPaintEvent *e)
{
  QPainter p(this);

  p.setRenderHint(QPainter::Antialiasing);

  const QBrush blackBrush(QColor(0, 0, 0));
  const QBrush redBrush(QColor(60, 0, 0));
  const QBrush greenBrush(QColor(0, 128, 0));
  const QBrush whiteBrush(QColor(255, 255, 255));

  QRectF r = rect();

  p.eraseRect(r);

  r = r.marginsRemoved(QMarginsF(m_Margin, m_Margin, m_Margin, m_Margin));

  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() ? palette().brush(QPalette::Inactive, QPalette::Highlight) : redBrush);

  int whiteX = (int)(whiteDelta() * 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);

  if(!ValidRange())
    return;

  if(!m_HistogramData.isEmpty())
  {
    float minx = delta(m_HistogramMin);
    float maxx = delta(m_HistogramMax);

    uint32_t maxval = 0;
    for(int i = 0; i < m_HistogramData.count(); i++)
    {
      float x = (float)i / (float)m_HistogramData.count();

      float xdelta = minx + x * (maxx - minx);

      if(xdelta >= 0.0f && xdelta <= 1.0f)
      {
        maxval = qMax(maxval, m_HistogramData[i]);
      }
    }

    if(maxval == 0)
      maxval = 1;

    for(int i = 0; i < m_HistogramData.count(); i++)
    {
      float x = (float)i / (float)m_HistogramData.count();
      float y = (float)m_HistogramData[i] / (float)maxval;

      float xdelta = minx + x * (maxx - minx);

      if(xdelta >= 0.0f && xdelta <= 1.0f)
      {
        float segwidth = qMax(r.width() * (maxx - minx) / (float)m_HistogramData.count(), 1.0);

        QRectF barRect(QPointF(r.left() + r.width() * (minx + x * (maxx - minx)),
                               r.bottom() - r.height() * y + 1),
                       QSizeF(segwidth, r.height() * y));

        p.fillRect(barRect, greenBrush);
      }
    }
  }

  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, palette().brush(QPalette::Dark));

  QVector<QPointF> whiteTriangle = {
      QPoint(whitePoint.left(), whitePoint.bottom() - m_MarkerSize * 2 + m_Margin),
      QPoint(whitePoint.left() + m_MarkerSize, whitePoint.bottom() + m_Margin),
      QPoint(whitePoint.left() - m_MarkerSize, whitePoint.bottom() + m_Margin)};

  QPainterPath whitePath;
//.........这里部分代码省略.........

void TimelineBar::paintEvent(QPaintEvent *e)
{
  QPainter p(viewport());

  p.setFont(font());
  p.setRenderHint(QPainter::TextAntialiasing);

  // draw boundaries and background
  {
    QRectF r = viewport()->rect();

    p.fillRect(r, palette().brush(QPalette::Window));

    r = r.marginsRemoved(QMargins(borderWidth + margin, borderWidth + margin, borderWidth + margin,
                                  borderWidth + margin));

    p.fillRect(r, palette().brush(QPalette::Base));
    p.drawRect(r);
  }

  QTextOption to;

  to.setWrapMode(QTextOption::NoWrap);
  to.setAlignment(Qt::AlignLeft | Qt::AlignVCenter);

  QFontMetrics fm = p.fontMetrics();

  {
    QRectF titleRect = m_eidAxisRect;
    titleRect.setLeft(titleRect.left() - m_titleWidth);
    titleRect.setWidth(m_titleWidth);

    p.setPen(QPen(palette().brush(QPalette::Text), 1.0));

    // add an extra margin for the text
    p.drawText(titleRect.marginsRemoved(QMarginsF(margin, 0, 0, 0)), eidAxisTitle, to);

    titleRect.setLeft(titleRect.left() - margin);
    titleRect.setTop(titleRect.top() - margin);
    p.drawLine(titleRect.bottomLeft(), titleRect.bottomRight());
    p.drawLine(titleRect.topRight(), titleRect.bottomRight());
  }

  QRectF eidAxisRect = m_eidAxisRect;

  p.drawLine(eidAxisRect.bottomLeft(), eidAxisRect.bottomRight() + QPointF(margin, 0));

  p.drawLine(m_highlightingRect.topLeft(), m_highlightingRect.topRight());

  if(m_Draws.isEmpty())
    return;

  eidAxisRect.setLeft(m_eidAxisRect.left() + m_pan);

  uint32_t maxEID = m_Draws.isEmpty() ? 0 : m_Draws.back();

  to.setAlignment(Qt::AlignCenter | Qt::AlignVCenter);

  p.setFont(Formatter::PreferredFont());

  QRectF hoverRect = eidAxisRect;

  // clip labels to the visible section
  p.setClipRect(m_eidAxisRect.marginsAdded(QMargins(0, margin, margin, 0)));

  // draw where we're hovering
  {
    QPoint pos = viewport()->mapFromGlobal(QCursor::pos());

    if(m_dataArea.contains(pos))
    {
      uint32_t hoverEID = eventAt(pos.x());

      hoverRect.setLeft(offsetOf(hoverEID));
      hoverRect.setWidth(m_eidAxisLabelWidth);

      // recentre
      hoverRect.moveLeft(hoverRect.left() - m_eidAxisLabelWidth / 2 + m_eidWidth / 2);

      QColor backCol = palette().color(QPalette::Base);

      if(getLuminance(backCol) < 0.2f)
        backCol = backCol.lighter(120);
      else
        backCol = backCol.darker(120);

      QRectF backRect = hoverRect.marginsAdded(QMargins(0, margin - borderWidth, 0, 0));

      backRect.setLeft(qMax(backRect.left(), m_eidAxisRect.left() + 1));

      p.fillRect(backRect, backCol);

      p.drawText(hoverRect, QString::number(hoverEID), to);

      // re-add the top margin so the lines match up with the border around the EID axis
      hoverRect = hoverRect.marginsAdded(QMargins(0, margin, 0, 0));

      if(hoverRect.left() >= m_eidAxisRect.left())
        p.drawLine(hoverRect.topLeft(), hoverRect.bottomLeft());
      p.drawLine(hoverRect.topRight(), hoverRect.bottomRight());
//.........这里部分代码省略.........