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population pyramid example. Added grouping option to barseries to give some control over layout
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r1794:efd4a5fe5972
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@@ -0,0 +1,93
1 /****************************************************************************
2 **
3 ** Copyright (C) 2012 Digia Plc
4 ** All rights reserved.
5 ** For any questions to Digia, please use contact form at http://qt.digia.com
6 **
7 ** This file is part of the Qt Commercial Charts Add-on.
8 **
9 ** $QT_BEGIN_LICENSE$
10 ** Licensees holding valid Qt Commercial licenses may use this file in
11 ** accordance with the Qt Commercial License Agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and Digia.
14 **
15 ** If you have questions regarding the use of this file, please use
16 ** contact form at http://qt.digia.com
17 ** $QT_END_LICENSE$
18 **
19 ****************************************************************************/
20
21 #include <QApplication>
22 #include <QMainWindow>
23 #include <QChartView>
24 #include <QBarSeries>
25 #include <QBarSet>
26 #include <QLegend>
27 #include <QBarCategoriesAxis>
28 #include <QHorizontalBarSeries>
29
30 QTCOMMERCIALCHART_USE_NAMESPACE
31
32 int main(int argc, char *argv[])
33 {
34 QApplication a(argc, argv);
35
36 //![1]
37 QBarSet *male = new QBarSet("Male");
38 QBarSet *female = new QBarSet("Female");
39
40 // From wikipedia
41 *male << -145596 << -149894 << -167327 << -164118 << -170710 << -169408 << -158395 << -176975 << -191803 << -191198 << -196815
42 << -207826 << -145517 << -113204 << -90986 << -70909 << -40013 << -15887 << -5769;
43
44 *female << 139353 << 143522 << 161212 << 156824 << 163226 << 161766 << 150595 << 170779 << 185979 << 187897 << 196158
45 << 209062 << 152460 << 129230 << 114778 << 109611 << 83845 << 44605 << 22328;
46
47 //![1]
48
49 //![2]
50 QHorizontalBarSeries *series = new QHorizontalBarSeries();
51 series->append(male);
52 series->append(female);
53 series->setBarWidth(0.5);
54 series->setGrouping(false);
55 //![2]
56
57 //![3]
58 QChart* chart = new QChart();
59 chart->addSeries(series);
60 chart->setTitle("Population of Finland in 2005 by age group");
61 chart->createDefaultAxes();
62 chart->setAnimationOptions(QChart::SeriesAnimations);
63 //![3]
64
65 //![4]
66 QStringList categories;
67 categories << "0-4" << "5-9" << "10-14" << "15-19" << "20-24" << "25-29" << "30-34" << "35-39" << "40-44" << "45-49"
68 << "50-54" << "55-59" << "60-64" << "65-69" << "70-74" << "75-79" << "80-84" << "85-89" << "90-";
69
70 QBarCategoriesAxis* axis = new QBarCategoriesAxis();
71 axis->append(categories);
72 chart->setAxisY(axis,series);
73 //![4]
74
75 //![5]
76 chart->legend()->setVisible(true);
77 chart->legend()->setAlignment(Qt::AlignBottom);
78 //![5]
79
80 //![6]
81 QChartView* chartView = new QChartView(chart);
82 chartView->setRenderHint(QPainter::Antialiasing);
83 //![6]
84
85 //![7]
86 QMainWindow window;
87 window.setCentralWidget(chartView);
88 window.resize(400, 800);
89 window.show();
90 //![7]
91
92 return a.exec();
93 }
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@@ -0,0 +1,6
1 !include( ../examples.pri ) {
2 error( "Couldn't find the examples.pri file!" )
3 }
4
5 TARGET = populationpyramid
6 SOURCES += main.cpp
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@@ -30,4 +30,5 SUBDIRS += \
30 30 donut \
31 31 donutbreakdown \
32 32 scrollchart \
33 datetimeaxis
33 datetimeaxis \
34 populationpyramid
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@@ -81,8 +81,7 protected:
81 81
82 82 AbstractBarAnimation *m_animation;
83 83
84 // Not owned.
85 QAbstractBarSeries *m_series;
84 QAbstractBarSeries *m_series; // Not owned.
86 85 QList<Bar *> m_bars;
87 86 QList<QGraphicsSimpleTextItem *> m_labels;
88 87 };
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@@ -46,7 +46,14 QVector<QRectF> HorizontalBarChartItem::calculateLayout()
46 46 qreal rangeX = m_domainMaxX - m_domainMinX;
47 47 qreal scaleY = (height / rangeY);
48 48 qreal scaleX = (width / rangeX);
49 qreal barHeight = (scaleY / setCount) * m_series->d_func()->barWidth(); // On horizontal chart barWidth of the barseries means height of the rect.
49 qreal barHeight;
50
51 // On horizontal chart barWidth of the barseries means height of the rect.
52 if (m_series->d_func()->m_grouping) {
53 barHeight = (scaleY / setCount) * m_series->d_func()->barWidth();
54 } else {
55 barHeight = scaleY * m_series->d_func()->barWidth();
56 }
50 57
51 58 int itemIndex(0);
52 59 for (int category = 0; category < categoryCount; category++) {
@@ -55,8 +62,12 QVector<QRectF> HorizontalBarChartItem::calculateLayout()
55 62 QBarSetPrivate* barSet = m_series->d_func()->barsetAt(set)->d_ptr.data();
56 63
57 64 qreal yPos = m_rect.bottom() + (m_domainMinY - barSet->pos(category)) * scaleY;
58 yPos += setCount*barHeight/2;
59 yPos -= set*barHeight;
65 if (m_series->d_func()->m_grouping) {
66 yPos += setCount*barHeight/2;
67 yPos -= set*barHeight;
68 } else {
69 yPos += barHeight/2;
70 }
60 71
61 72 qreal barWidth = barSet->value(category) * scaleX;
62 73 Bar* bar = m_bars.at(itemIndex);
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@@ -357,13 +357,22 bool QAbstractBarSeries::isLabelsVisible() const
357 357 return d->m_labelsVisible;
358 358 }
359 359
360 void QAbstractBarSeries::setGrouping(bool grouping)
361 {
362 Q_D(QAbstractBarSeries);
363 d->setGrouping(grouping);
364 }
365
366
367
360 368 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
361 369
362 370 QAbstractBarSeriesPrivate::QAbstractBarSeriesPrivate(QAbstractBarSeries *q) :
363 371 QAbstractSeriesPrivate(q),
364 372 m_barWidth(0.5), // Default value is 50% of category width
365 373 m_labelsVisible(false),
366 m_visible(true)
374 m_visible(true),
375 m_grouping(true)
367 376 {
368 377 }
369 378
@@ -411,6 +420,14 void QAbstractBarSeriesPrivate::setLabelsVisible(bool visible)
411 420 emit labelsVisibleChanged(visible);
412 421 }
413 422
423 void QAbstractBarSeriesPrivate::setGrouping(bool grouping)
424 {
425 if (m_grouping != grouping) {
426 m_grouping = grouping;
427 emit updatedBars();
428 }
429 }
430
414 431 qreal QAbstractBarSeriesPrivate::min()
415 432 {
416 433 if (m_barSets.count() <= 0) {
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@@ -58,6 +58,10 public:
58 58 void setLabelsVisible(bool visible = true);
59 59 bool isLabelsVisible() const;
60 60
61 // TODO. Good name for this. This affects how bars are laid out on chart. (for example with pyramid chart)
62 // Also do we support same for stacked and percent bar charts or just normal bar charts?
63 void setGrouping(bool grouping = true);
64
61 65 protected:
62 66 explicit QAbstractBarSeries(QAbstractBarSeriesPrivate &d,QObject *parent = 0);
63 67
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@@ -52,6 +52,7 public:
52 52
53 53 void setVisible(bool visible);
54 54 void setLabelsVisible(bool visible);
55 void setGrouping(bool grouping);
55 56
56 57 void scaleDomain(Domain& domain);
57 58 ChartElement* createGraphics(ChartPresenter* presenter);
@@ -91,9 +92,12 protected:
91 92 qreal m_barWidth;
92 93 bool m_labelsVisible;
93 94 bool m_visible;
95 bool m_grouping;
94 96
95 97 private:
96 98 Q_DECLARE_PUBLIC(QAbstractBarSeries)
99 friend class HorizontalBarChartItem;
100 friend class BarChartItem;
97 101 };
98 102
99 103 QTCOMMERCIALCHART_END_NAMESPACE
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@@ -48,7 +48,13 QVector<QRectF> BarChartItem::calculateLayout()
48 48 qreal rangeX = m_domainMaxX - m_domainMinX;
49 49 qreal scaleY = (height / rangeY);
50 50 qreal scaleX = (width / rangeX);
51 qreal barWidth = (scaleX / setCount) * m_series->d_func()->barWidth();
51 qreal barWidth;
52
53 if (m_series->d_func()->m_grouping) {
54 barWidth = (scaleX / setCount) * m_series->d_func()->barWidth();
55 } else {
56 barWidth = scaleX * m_series->d_func()->barWidth();
57 }
52 58
53 59 int itemIndex(0);
54 60 for (int category = 0; category < categoryCount; category++) {
@@ -56,9 +62,16 QVector<QRectF> BarChartItem::calculateLayout()
56 62 for (int set = 0; set < setCount; set++) {
57 63 QBarSetPrivate* barSet = m_series->d_func()->barsetAt(set)->d_ptr.data();
58 64
59 qreal xPos = (barSet->pos(category) - m_domainMinX) * scaleX + m_rect.left();
60 xPos -= setCount*barWidth/2;
61 xPos += set*barWidth;
65 qreal xPos;
66
67 if (m_series->d_func()->m_grouping) {
68 xPos = (barSet->pos(category) - m_domainMinX) * scaleX + m_rect.left();
69 xPos -= setCount*barWidth/2;
70 xPos += set*barWidth;
71 } else {
72 xPos = (barSet->pos(category) - m_domainMinX) * scaleX + m_rect.left() - barWidth/2;
73 }
74
62 75 qreal barHeight = barSet->value(category) * scaleY;
63 76 Bar* bar = m_bars.at(itemIndex);
64 77
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