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

added missing example files :)
sauimone -
r96:277658be1fc8
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1 #include "chartwidget.h"
2
3 ChartWidget::ChartWidget(QWidget *parent) :
4 QChartView(parent)
5 {
6 }
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1 #ifndef CHARTWIDGET_H
2 #define CHARTWIDGET_H
3
4 #include <qchartview.h>
5
6 QTCOMMERCIALCHART_USE_NAMESPACE
7
8
9 class ChartWidget : public QChartView
10 {
11 Q_OBJECT
12 public:
13 explicit ChartWidget(QWidget *parent = 0);
14
15 signals:
16
17 public slots:
18
19 };
20
21 #endif // CHARTWIDGET_H
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1 #include <QApplication>
2 #include <QMainWindow>
3 #include <QStandardItemModel>
4 #include <stackedbarchartseries.h>
5 #include "chartwidget.h"
6
7 QTCOMMERCIALCHART_USE_NAMESPACE
8
9 int main(int argc, char *argv[])
10 {
11 QApplication a(argc, argv);
12 QMainWindow window;
13
14 StackedBarChartSeries* series0 = new StackedBarChartSeries();
15
16 // Create some test data to chart
17 QStandardItemModel dataModel(5,10);
18 QModelIndex index;
19 index = dataModel.index(0,0);
20
21 // Series 0
22 dataModel.setData(dataModel.index(0,0),1);
23 dataModel.setData(dataModel.index(0,1),2);
24 dataModel.setData(dataModel.index(0,2),3);
25 dataModel.setData(dataModel.index(0,3),4);
26 dataModel.setData(dataModel.index(0,4),5);
27 dataModel.setData(dataModel.index(0,5),6);
28 dataModel.setData(dataModel.index(0,6),7);
29 dataModel.setData(dataModel.index(0,7),8);
30 dataModel.setData(dataModel.index(0,8),9);
31 dataModel.setData(dataModel.index(0,9),10);
32
33 // Series 1, some other items missing
34 dataModel.setData(dataModel.index(1,0),5);
35 dataModel.setData(dataModel.index(1,3),4);
36 dataModel.setData(dataModel.index(1,5),7);
37 dataModel.setData(dataModel.index(1,6),8);
38 dataModel.setData(dataModel.index(1,8),9);
39 dataModel.setData(dataModel.index(1,9),9);
40
41 // Series 2
42 dataModel.setData(dataModel.index(2,0),3);
43 dataModel.setData(dataModel.index(2,1),5);
44 dataModel.setData(dataModel.index(2,2),8);
45 dataModel.setData(dataModel.index(2,3),13);
46 dataModel.setData(dataModel.index(2,4),8);
47 dataModel.setData(dataModel.index(2,5),5);
48 dataModel.setData(dataModel.index(2,6),3);
49 dataModel.setData(dataModel.index(2,7),2);
50 dataModel.setData(dataModel.index(2,8),1);
51 dataModel.setData(dataModel.index(2,9),1);
52
53 // Series 3
54 dataModel.setData(dataModel.index(3,0),5);
55 dataModel.setData(dataModel.index(3,1),6);
56 dataModel.setData(dataModel.index(3,2),7);
57 dataModel.setData(dataModel.index(3,3),3);
58 dataModel.setData(dataModel.index(3,4),4);
59 dataModel.setData(dataModel.index(3,5),5);
60 dataModel.setData(dataModel.index(3,6),8);
61 dataModel.setData(dataModel.index(3,7),9);
62 dataModel.setData(dataModel.index(3,8),10);
63 dataModel.setData(dataModel.index(3,9),5);
64
65 // Series 4
66 dataModel.setData(dataModel.index(4,0),9);
67 dataModel.setData(dataModel.index(4,1),7);
68 dataModel.setData(dataModel.index(4,2),5);
69 dataModel.setData(dataModel.index(4,3),3);
70 dataModel.setData(dataModel.index(4,4),1);
71 dataModel.setData(dataModel.index(4,5),2);
72 dataModel.setData(dataModel.index(4,6),4);
73 dataModel.setData(dataModel.index(4,7),6);
74 dataModel.setData(dataModel.index(4,8),8);
75 dataModel.setData(dataModel.index(4,9),10);
76
77 series0->setData(&dataModel);
78
79 ChartWidget* chartWidget = new ChartWidget(&window);
80 chartWidget->addSeries(series0);
81
82 window.setCentralWidget(chartWidget);
83 window.resize(400, 300);
84 window.show();
85
86 return a.exec();
87 }
88
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1 !include( ../../common.pri ) {
2 error( "Couldn't find the common.pri file!" )
3 }
4
5 !include( ../../integrated.pri ) {
6 error( "Couldn't find the integrated.pri file !")
7 }
8
9 TARGET = stackedbarchart
10 TEMPLATE = app
11 QT += core gui
12 SOURCES += main.cpp \
13 chartwidget.cpp
14
15 HEADERS += \
16 chartwidget.h
17
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1 #include <limits.h>
2 #include "stackedbarchartseries.h"
3
4 QTCOMMERCIALCHART_BEGIN_NAMESPACE
5
6 StackedBarChartSeries::StackedBarChartSeries(QObject *parent) :
7 QChartSeries(parent)
8 {
9 }
10
11 bool StackedBarChartSeries::setData(QAbstractItemModel* model)
12 {
13 mModel = model;
14 }
15
16 int StackedBarChartSeries::min()
17 {
18 Q_ASSERT(mModel->rowCount() > 0);
19 Q_ASSERT(mModel->columnCount() > 0);
20
21 // TODO: make min and max members and update them when data changes.
22 // This is slower since they are checked every time, even if data is same since previous call.
23 int min = INT_MAX;
24
25 for (int i=0; i <mModel->rowCount(); i++) {
26 for(int j=0; j<mModel->columnCount(); j++) {
27 int temp = mModel->data(mModel->index(i,j)).toInt();
28 if (temp < min) {
29 min = temp;
30 }
31 }
32 }
33 return min;
34 }
35
36 int StackedBarChartSeries::max()
37 {
38 Q_ASSERT(mModel->rowCount() > 0);
39 Q_ASSERT(mModel->columnCount() > 0);
40
41 // TODO: make min and max members and update them when data changes.
42 // This is slower since they are checked every time, even if data is same since previous call.
43 int max = INT_MIN;
44
45 for (int i=0; i <mModel->rowCount(); i++) {
46 for(int j=0; j<mModel->columnCount(); j++) {
47 int temp = mModel->data(mModel->index(i,j)).toInt();
48 if (temp > max) {
49 max = temp;
50 }
51 }
52 }
53 return max;
54 }
55
56 int StackedBarChartSeries::maxColumnSum()
57 {
58 Q_ASSERT(mModel->rowCount() > 0);
59 Q_ASSERT(mModel->columnCount() > 0);
60
61 int max = INT_MIN;
62
63 for (int col=0; col <mModel->rowCount(); col++) {
64 int sum = columnSum(col);
65 if (sum > max) {
66 max = sum;
67 }
68 }
69 return max;
70 }
71
72 int StackedBarChartSeries::countRows()
73 {
74 return mModel->rowCount();
75 }
76
77 int StackedBarChartSeries::countColumns()
78 {
79 return mModel->columnCount();
80 }
81
82 int StackedBarChartSeries::countTotalItems()
83 {
84 return mModel->rowCount() * mModel->columnCount();
85 }
86
87 int StackedBarChartSeries::valueAt(int row, int column)
88 {
89 QModelIndex index = mModel->index(row,column);
90 return mModel->data(index).toInt();
91 }
92
93 int StackedBarChartSeries::columnSum(int column)
94 {
95 int sum(0);
96 int count = mModel->rowCount();
97
98 for (int row = 0; row < count; row++) {
99 sum += mModel->data(mModel->index(row,column)).toInt();
100 }
101 return sum;
102 }
103
104 #include "moc_stackedbarchartseries.cpp"
105
106 QTCOMMERCIALCHART_END_NAMESPACE
107
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1 #ifndef STACKEDBARCHARTSERIES_H
2 #define STACKEDBARCHARTSERIES_H
3
4 #include <QList>
5 #include <QAbstractItemModel>
6 #include "qchartseries.h"
7
8 QTCOMMERCIALCHART_BEGIN_NAMESPACE
9
10 class StackedBarGroup;
11
12 class QTCOMMERCIALCHART_EXPORT StackedBarChartSeries : public QChartSeries
13 {
14 Q_OBJECT
15 public:
16 StackedBarChartSeries(QObject* parent=0);
17
18 // from QChartSeries
19 virtual QChartSeriesType type() const { return QChartSeries::SeriesTypeStackedBar; }
20
21 // TODO: Better data model?
22 virtual bool setData(QAbstractItemModel* model);
23
24 // Methods to find out minimum and maximum values of data
25 int min();
26 int max();
27 int maxColumnSum(); // returns maximum sum of items in all columns.
28
29 int countRows();
30 int countColumns();
31 int countTotalItems();
32 int valueAt(int row, int column);
33
34 private:
35 int columnSum(int column);
36
37 public Q_SLOTS:
38
39 private:
40
41 QAbstractItemModel* mModel;
42 StackedBarGroup* mStackedBarGroup;
43 };
44
45 QTCOMMERCIALCHART_END_NAMESPACE
46
47 #endif // STACKEDBARCHARTSERIES_H
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1 #include "stackedbargroup.h"
2 #include "bar.h"
3 #include <QDebug>
4
5 QTCOMMERCIALCHART_BEGIN_NAMESPACE
6
7 StackedBarGroup::StackedBarGroup(StackedBarChartSeries& series, QGraphicsItem *parent) :
8 ChartItem(parent)
9 ,mSeries(series)
10 ,mLayoutSet(false)
11 ,mLayoutDirty(true)
12 ,mBarDefaultWidth(10) // TODO: remove hard coding, when we have layout code ready
13 {
14 dataChanged();
15 }
16
17
18 void StackedBarGroup::setSize(const QSize& size)
19 {
20 qDebug() << "StackedBarGroup::setSize";
21 mWidth = size.width();
22 mHeight = size.height();
23 layoutChanged();
24 mLayoutSet = true;
25 }
26
27 void StackedBarGroup::setPlotDomain(const PlotDomain& data)
28 {
29 qDebug() << "StackedBarGroup::setPlotDomain";
30 // TODO:
31 }
32
33 void StackedBarGroup::setBarWidth( int w )
34 {
35 mBarDefaultWidth = w;
36 }
37
38 int StackedBarGroup::addColor( QColor color )
39 {
40 int colorIndex = mColors.count();
41 mColors.append(color);
42 return colorIndex;
43 }
44
45 void StackedBarGroup::resetColors()
46 {
47 mColors.clear();
48 }
49
50 void StackedBarGroup::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
51 {
52 if (!mLayoutSet) {
53 qDebug() << "QBarChart::paint called without layout set. Aborting.";
54 return;
55 }
56 if (mLayoutDirty) {
57 // Layout or data has changed. Need to redraw.
58 foreach(QGraphicsItem* i, childItems()) {
59 i->paint(painter,option,widget);
60 }
61 }
62 }
63
64 QRectF StackedBarGroup::boundingRect() const
65 {
66 return QRectF(0,0,mWidth,mHeight);
67 }
68
69
70 void StackedBarGroup::dataChanged()
71 {
72 qDebug() << "QBarChart::dataChanged mSeries";
73
74 // Find out maximum and minimum of all series
75 mMax = mSeries.max();
76 mMin = mSeries.min();
77
78 // Delete old bars
79 // Is this correct way to delete childItems?
80 foreach (QGraphicsItem* item, childItems()) {
81 delete item;
82 }
83
84 // Create new graphic items for bars
85 int totalItems = mSeries.countTotalItems();
86 for (int i=0; i<totalItems; i++) {
87 Bar *bar = new Bar(this);
88 childItems().append(bar);
89 }
90
91 mLayoutDirty = true;
92 }
93
94 void StackedBarGroup::layoutChanged()
95 {
96 // Scale bars to new layout
97 // Layout for bars:
98 if (mSeries.countRows() <= 0) {
99 // Nothing to do.
100 return;
101 }
102
103 // TODO: better way to auto-layout
104 // Use reals for accurancy (implicit casting here, we get a warning)
105 qreal maxSum = mSeries.maxColumnSum();
106 qreal h = mHeight;
107 qreal scale = (h / maxSum);
108
109 int count = mSeries.countColumns();
110 int posStepX = (mWidth / (count+1));
111
112 int itemIndex(0);
113 int xPos = (mWidth / (count+1)) - mSeries.countColumns() * mBarDefaultWidth /2;
114 for (int column = 0; column < mSeries.countColumns(); column++) {
115 int yPos = mHeight;
116 for (int row=0; row < mSeries.countRows(); row++) {
117 qDebug() << itemIndex;
118 int barHeight = mSeries.valueAt(row, column) * scale;
119 Bar* bar = reinterpret_cast<Bar*> (childItems().at(itemIndex));
120
121 // TODO: width settable per bar?
122 bar->resize(mBarDefaultWidth, barHeight);
123 bar->setColor(mColors.at(row));
124 bar->setPos(xPos, yPos);
125 itemIndex++;
126 yPos += barHeight;
127 }
128 xPos += posStepX;
129 }
130 mLayoutDirty = true;
131 }
132
133 QTCOMMERCIALCHART_END_NAMESPACE
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1 #ifndef STACKEDBARGROUP_H
2 #define STACKEDBARGROUP_H
3
4 #include "chartitem_p.h"
5 #include "bar.h"
6 #include "stackedbarchartseries.h"
7
8 QTCOMMERCIALCHART_BEGIN_NAMESPACE
9
10 class StackedBarGroup : public ChartItem
11 {
12 public:
13 StackedBarGroup(StackedBarChartSeries& series, QGraphicsItem *parent = 0);
14
15 // From ChartItem
16 virtual void setSize(const QSize& size);
17 virtual void setPlotDomain(const PlotDomain& data);
18
19 // Layout "api"
20 void setPos(qreal x, qreal y);
21 void setBarWidth( int w ); // Default width for each bar
22
23 int addColor( QColor color );
24 void resetColors();
25
26 // From QGraphicsItem
27 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
28 QRectF boundingRect() const;
29
30 private:
31
32 void dataChanged(); // data of series has changed -> need to recalculate bar sizes
33 void layoutChanged(); // layout has changed -> need to recalculate bar sizes
34
35 private:
36
37 // Data
38 StackedBarChartSeries& mSeries;
39 int mMin; // Min and max values of data. (updated when data is changed, used when drawing)
40 int mMax;
41
42 int mHeight; // Layout spesific
43 int mWidth;
44 int mBarDefaultWidth;
45
46 bool mLayoutSet; // True, if component has been laid out.
47 bool mLayoutDirty;
48
49 QList<QColor> mColors; // List of colors for series for now
50
51 };
52
53 QTCOMMERCIALCHART_END_NAMESPACE
54
55 #endif // STACKEDBARGROUP_H
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