| @@ -31,7 +31,7 void Callout::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, Q | |||
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31 | 31 | if (!m_rect.contains(anchor)) { |
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32 | 32 | QPointF point1, point2; |
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33 | 33 | |
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34 |
// establish the position of the anchor point in relation to m_ |
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34 | // establish the position of the anchor point in relation to m_rect | |
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35 | 35 | bool above = anchor.y() <= m_rect.top(); |
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36 | 36 | bool aboveCenter = anchor.y() > m_rect.top() && anchor.y() <= m_rect.center().y(); |
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37 | 37 | bool belowCenter = anchor.y() > m_rect.center().y() && anchor.y() <= m_rect.bottom(); |
| @@ -42,7 +42,7 void Callout::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, Q | |||
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42 | 42 | bool rightOfCenter = anchor.x() > m_rect.center().x() && anchor.x() <= m_rect.right(); |
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43 | 43 | bool onRight = anchor.x() > m_rect.right(); |
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44 | 44 | |
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45 |
// get the nearest m_ |
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45 | // get the nearest m_rect corner. | |
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46 | 46 | qreal x = (onRight + rightOfCenter) * m_rect.width(); |
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47 | 47 | qreal y = (below + belowCenter) * m_rect.height(); |
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48 | 48 | bool cornerCase = (above && onLeft) || (above && onRight) || (below && onLeft) || (below && onRight); |
| @@ -6,7 +6,9 | |||
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6 | 6 | This demo shows how to draw an additional element (a callout) on top of the chart. |
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7 | 7 | \image demos_callout.png |
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8 | 8 | |
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9 |
QChart class provides two methods that map between the scene coordinates and the series' domain (define |
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9 | QChart class provides two methods that map between the scene coordinates and the series' domain (defined by the axes ranges). | |
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10 | ||
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10 | 11 | QPointF QChart::mapToPosition(const QPointF &value, QAbstractSeries *series) |
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12 | ||
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11 | 13 | QPointF QChart::mapToValue(const QPointF &position, QAbstractSeries *series) |
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12 | 14 | */ |
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