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Clone from http://code.qt.io/qt/qtcharts.git

Better support for negative values in stacked barcharts. Negative values are stacked from zero to negative direction. Positive values are stacked from zero to positive direction.
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r1897:c0fc53c8ab57
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@@ -50,7 +50,8 QVector<QRectF> HorizontalStackedBarChartItem::calculateLayout()
50 50
51 51 int itemIndex(0);
52 52 for (int category = 0; category < categoryCount; category++) {
53 qreal xPos = -scaleX * m_domainMinX + geometry().left();
53 qreal xMax = -scaleX * m_domainMinX + geometry().left();
54 qreal xMin = -scaleX * m_domainMinX + geometry().left();
54 55 for (int set = 0; set < setCount; set++) {
55 56 QBarSetPrivate* barSet = m_series->d_func()->barsetAt(set)->d_ptr.data();
56 57
@@ -59,8 +60,6 QVector<QRectF> HorizontalStackedBarChartItem::calculateLayout()
59 60 qreal barWidth = barSet->value(category) * scaleX;
60 61 Bar* bar = m_bars.at(itemIndex);
61 62
62 QRectF rect(xPos, yPos - barHeight, barWidth, barHeight);
63 layout.append(rect);
64 63 bar->setPen(barSet->m_pen);
65 64 bar->setBrush(barSet->m_brush);
66 65 if (qFuzzyIsNull(barHeight)) {
@@ -76,14 +75,23 QVector<QRectF> HorizontalStackedBarChartItem::calculateLayout()
76 75 } else {
77 76 label->setText(QString(""));
78 77 }
79
80 label->setPos(xPos + (rect.width()/2 - label->boundingRect().width()/2)
81 ,yPos - barHeight/2 - label->boundingRect().height()/2);
82 78 label->setFont(barSet->m_labelFont);
83 79 label->setBrush(barSet->m_labelBrush);
84 80
81 if (barWidth > 0) {
82 QRectF rect(xMax, yPos - barHeight, barWidth, barHeight);
83 layout.append(rect);
84 label->setPos(xMax + (rect.width()/2 - label->boundingRect().width()/2)
85 ,yPos - barHeight/2 - label->boundingRect().height()/2);
86 xMax += barWidth;
87 } else {
88 QRectF rect(xMin, yPos - barHeight, barWidth, barHeight);
89 layout.append(rect);
90 label->setPos(xMin + (rect.width()/2 - label->boundingRect().width()/2)
91 ,yPos - barHeight/2 - label->boundingRect().height()/2);
92 xMin += barWidth;
93 }
85 94 itemIndex++;
86 xPos += barWidth;
87 95 }
88 96 }
89 97 return layout;
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@@ -66,10 +66,9 void QHorizontalStackedBarSeriesPrivate::scaleDomain(Domain& domain)
66 66 qreal maxY(domain.maxY());
67 67
68 68 qreal y = categoryCount();
69 qreal x = maxCategorySum();
70 minX = qMin(minX, x);
69 minX = qMin(minX, bottom());
71 70 minY = qMin(minY, - (qreal)0.5);
72 maxX = qMax(maxX, x);
71 maxX = qMax(maxX, top());
73 72 maxY = qMax(maxY, y - (qreal)0.5);
74 73
75 74 domain.setRange(minX,maxX,minY,maxY);
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@@ -188,15 +188,6 QTCOMMERCIALCHART_BEGIN_NAMESPACE
188 188 */
189 189
190 190 /*!
191 This is depreciated constructor.
192 \a parent
193 */
194 QAbstractBarSeries::QAbstractBarSeries(QObject *parent) :
195 QAbstractSeries(*(QAbstractBarSeriesPrivate*)(0),parent)
196 {
197 }
198
199 /*!
200 191 Destructs abstractbarseries and owned barsets.
201 192 */
202 193 QAbstractBarSeries::~QAbstractBarSeries()
@@ -602,6 +593,68 qreal QAbstractBarSeriesPrivate::maxX()
602 593 return max;
603 594 }
604 595
596 qreal QAbstractBarSeriesPrivate::categoryTop(int category)
597 {
598 // Returns top (sum of all positive values) of category.
599 // Returns 0, if all values are negative
600 qreal top(0);
601 int count = m_barSets.count();
602 for (int set = 0; set < count; set++) {
603 if (category < m_barSets.at(set)->count()) {
604 qreal temp = m_barSets.at(set)->at(category);
605 if (temp > 0) {
606 top += temp;
607 }
608 }
609 }
610 return top;
611 }
612
613 qreal QAbstractBarSeriesPrivate::categoryBottom(int category)
614 {
615 // Returns bottom (sum of all negative values) of category
616 // Returns 0, if all values are positive
617 qreal bottom(0);
618 int count = m_barSets.count();
619 for (int set = 0; set < count; set++) {
620 if (category < m_barSets.at(set)->count()) {
621 qreal temp = m_barSets.at(set)->at(category);
622 if (temp < 0) {
623 bottom += temp;
624 }
625 }
626 }
627 return bottom;
628 }
629
630 qreal QAbstractBarSeriesPrivate::top()
631 {
632 // Returns top of all categories
633 qreal top(0);
634 int count = categoryCount();
635 for (int i=0; i<count; i++) {
636 qreal temp = categoryTop(i);
637 if (temp > top) {
638 top = temp;
639 }
640 }
641 return top;
642 }
643
644 qreal QAbstractBarSeriesPrivate::bottom()
645 {
646 // Returns bottom of all categories
647 qreal bottom(0);
648 int count = categoryCount();
649 for (int i=0; i<count; i++) {
650 qreal temp = categoryBottom(i);
651 if (temp < bottom) {
652 bottom = temp;
653 }
654 }
655 return bottom;
656 }
657
605 658
606 659 void QAbstractBarSeriesPrivate::scaleDomain(Domain& domain)
607 660 {
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@@ -37,10 +37,6 class QTCOMMERCIALCHART_EXPORT QAbstractBarSeries : public QAbstractSeries
37 37 Q_PROPERTY(int count READ count NOTIFY countChanged)
38 38 Q_PROPERTY(bool labelsVisible READ isLabelsVisible WRITE setLabelsVisible NOTIFY labelsVisibleChanged)
39 39
40 protected:
41 //TODO DEPRECIATED
42 explicit QAbstractBarSeries(QObject *parent = 0);
43
44 40 public:
45 41 virtual ~QAbstractBarSeries();
46 42
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@@ -77,6 +77,10 public:
77 77 qreal maxCategorySum();
78 78 qreal minX();
79 79 qreal maxX();
80 qreal categoryTop(int category);
81 qreal categoryBottom(int category);
82 qreal top();
83 qreal bottom();
80 84
81 85 Q_SIGNALS:
82 86 void clicked(int index, QBarSet *barset);
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@@ -97,16 +97,14 void QStackedBarSeriesPrivate::scaleDomain(Domain& domain)
97 97 qreal maxY(domain.maxY());
98 98
99 99 qreal x = categoryCount();
100 qreal y = maxCategorySum();
101 100 minX = qMin(minX, - (qreal)0.5);
102 minY = qMin(minY, y);
101 minY = qMin(minY, bottom());
103 102 maxX = qMax(maxX, x - (qreal)0.5);
104 maxY = qMax(maxY, y);
103 maxY = qMax(maxY, top());
105 104
106 105 domain.setRange(minX,maxX,minY,maxY);
107 106 }
108 107
109
110 108 ChartElement* QStackedBarSeriesPrivate::createGraphics(ChartPresenter* presenter)
111 109 {
112 110 Q_Q(QStackedBarSeries);
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@@ -50,7 +50,8 QVector<QRectF> StackedBarChartItem::calculateLayout()
50 50
51 51 int itemIndex(0);
52 52 for (int category = 0; category < categoryCount; category++) {
53 qreal yPos = height + rangeY * m_domainMinY + geometry().topLeft().y();
53 qreal yMax = height + scaleY * m_domainMinY + geometry().topLeft().y();
54 qreal yMin = height + scaleY * m_domainMinY + geometry().topLeft().y();
54 55 for (int set=0; set < setCount; set++) {
55 56 QBarSetPrivate* barSet = m_series->d_func()->barsetAt(set)->d_ptr.data();
56 57
@@ -66,9 +67,6 QVector<QRectF> StackedBarChartItem::calculateLayout()
66 67 bar->setVisible(barsVisible);
67 68 }
68 69
69 QRectF rect(xPos, yPos-barHeight, barWidth, barHeight);
70 layout.append(rect);
71
72 70 QGraphicsSimpleTextItem* label = m_labels.at(itemIndex);
73 71
74 72 if (!qFuzzyIsNull(barSet->value(category))) {
@@ -76,13 +74,24 QVector<QRectF> StackedBarChartItem::calculateLayout()
76 74 } else {
77 75 label->setText(QString(""));
78 76 }
79
80 label->setPos(xPos + (rect.width()/2 - label->boundingRect().width()/2)
81 ,yPos - barHeight/2 - label->boundingRect().height()/2);
82 77 label->setFont(barSet->m_labelFont);
83 78 label->setBrush(barSet->m_labelBrush);
79
80 if (barHeight < 0) {
81 QRectF rect(xPos, yMax-barHeight, barWidth, barHeight);
82 layout.append(rect);
83 label->setPos(xPos + (rect.width()/2 - label->boundingRect().width()/2)
84 ,yMax - barHeight/2 - label->boundingRect().height()/2);
85 yMax -= barHeight;
86 } else {
87 QRectF rect(xPos, yMin-barHeight, barWidth, barHeight);
88 layout.append(rect);
89 label->setPos(xPos + (rect.width()/2 - label->boundingRect().width()/2)
90 ,yMin - barHeight/2 - label->boundingRect().height()/2);
91 yMin -= barHeight;
92 }
93
84 94 itemIndex++;
85 yPos -= barHeight;
86 95 }
87 96 }
88 97
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