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

Added auto scaling option to test app
Tero Ahola -
r6:ac2e8ee32571
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@@ -3,6 +3,7
3 3 #include <QPushButton>
4 4 #include <QComboBox>
5 5 #include <QSpinBox>
6 #include <QCheckBox>
6 7 #include <QGridLayout>
7 8 #include <QHBoxLayout>
8 9 #include <QLabel>
@@ -41,27 +42,29 MainWidget::MainWidget(QWidget *parent) :
41 42 this, SLOT(backgroundChanged(int)));
42 43
43 44 // Axis
45 QCheckBox *autoScaleCheck = new QCheckBox("Automatic scaling");
46 connect(autoScaleCheck, SIGNAL(stateChanged(int)), this, SLOT(autoScaleChanged(int)));
44 47 // Allow setting also non-sense values (like -2147483648 and 2147483647)
45 QSpinBox *xMinSpin = new QSpinBox();
46 xMinSpin->setMinimum(INT_MIN);
47 xMinSpin->setMaximum(INT_MAX);
48 xMinSpin->setValue(0);
49 connect(xMinSpin, SIGNAL(valueChanged(int)), this, SLOT(xMinChanged(int)));
50 QSpinBox *xMaxSpin = new QSpinBox();
51 xMaxSpin->setMinimum(INT_MIN);
52 xMaxSpin->setMaximum(INT_MAX);
53 xMaxSpin->setValue(10);
54 connect(xMaxSpin, SIGNAL(valueChanged(int)), this, SLOT(xMaxChanged(int)));
55 QSpinBox *yMinSpin = new QSpinBox();
56 yMinSpin->setMinimum(INT_MIN);
57 yMinSpin->setMaximum(INT_MAX);
58 yMinSpin->setValue(0);
59 connect(yMinSpin, SIGNAL(valueChanged(int)), this, SLOT(yMinChanged(int)));
60 QSpinBox *yMaxSpin = new QSpinBox();
61 yMaxSpin->setMinimum(INT_MIN);
62 yMaxSpin->setMaximum(INT_MAX);
63 yMaxSpin->setValue(10);
64 connect(yMaxSpin, SIGNAL(valueChanged(int)), this, SLOT(yMaxChanged(int)));
48 m_xMinSpin = new QSpinBox();
49 m_xMinSpin->setMinimum(INT_MIN);
50 m_xMinSpin->setMaximum(INT_MAX);
51 m_xMinSpin->setValue(0);
52 connect(m_xMinSpin, SIGNAL(valueChanged(int)), this, SLOT(xMinChanged(int)));
53 m_xMaxSpin = new QSpinBox();
54 m_xMaxSpin->setMinimum(INT_MIN);
55 m_xMaxSpin->setMaximum(INT_MAX);
56 m_xMaxSpin->setValue(10);
57 connect(m_xMaxSpin, SIGNAL(valueChanged(int)), this, SLOT(xMaxChanged(int)));
58 m_yMinSpin = new QSpinBox();
59 m_yMinSpin->setMinimum(INT_MIN);
60 m_yMinSpin->setMaximum(INT_MAX);
61 m_yMinSpin->setValue(0);
62 connect(m_yMinSpin, SIGNAL(valueChanged(int)), this, SLOT(yMinChanged(int)));
63 m_yMaxSpin = new QSpinBox();
64 m_yMaxSpin->setMinimum(INT_MIN);
65 m_yMaxSpin->setMaximum(INT_MAX);
66 m_yMaxSpin->setValue(10);
67 connect(m_yMaxSpin, SIGNAL(valueChanged(int)), this, SLOT(yMaxChanged(int)));
65 68
66 69 QGridLayout *grid = new QGridLayout();
67 70 QHBoxLayout *hbox = new QHBoxLayout();
@@ -71,40 +74,36 MainWidget::MainWidget(QWidget *parent) :
71 74 grid->addWidget(dataCombo, 1, 1);
72 75 grid->addWidget(new QLabel("Background:"), 2, 0);
73 76 grid->addWidget(backgroundCombo, 2, 1);
74 grid->addWidget(new QLabel("x min:"), 3, 0);
75 grid->addWidget(xMinSpin, 3, 1);
76 grid->addWidget(new QLabel("x max:"), 4, 0);
77 grid->addWidget(xMaxSpin, 4, 1);
78 grid->addWidget(new QLabel("y min:"), 5, 0);
79 grid->addWidget(yMinSpin, 5, 1);
80 grid->addWidget(new QLabel("y max:"), 6, 0);
81 grid->addWidget(yMaxSpin, 6, 1);
77 grid->addWidget(autoScaleCheck, 3, 0);
78 grid->addWidget(new QLabel("x min:"), 4, 0);
79 grid->addWidget(m_xMinSpin, 4, 1);
80 grid->addWidget(new QLabel("x max:"), 5, 0);
81 grid->addWidget(m_xMaxSpin, 5, 1);
82 grid->addWidget(new QLabel("y min:"), 6, 0);
83 grid->addWidget(m_yMinSpin, 6, 1);
84 grid->addWidget(new QLabel("y max:"), 7, 0);
85 grid->addWidget(m_yMaxSpin, 7, 1);
82 86 // add row with empty label to make all the other rows static
83 grid->addWidget(new QLabel(""), 7, 0);
84 grid->setRowStretch(7, 1);
87 grid->addWidget(new QLabel(""), 8, 0);
88 grid->setRowStretch(8, 1);
85 89
86 90 hbox->addLayout(grid);
87 91 hbox->addWidget(m_chartWidget);
88 92 hbox->setStretch(1, 1);
89 93
90 94 setLayout(hbox);
95
96 // Setting auto scale affects min/max value spin boxes, so it needs to be done after they have
97 // been constructed
98 autoScaleCheck->setChecked(true);
91 99 }
92 100
93 101 void MainWidget::chartTypeChanged(int itemIndex)
94 102 {
95 103 qDebug() << "chartTypeChanged: " << itemIndex;
96
97 switch (itemIndex) {
98 // case 0:
99 // m_chartWidget->setType(ChartWidget::TypeLine);
100 // break;
101 default:
102 // TODO: api for setting chart type?
103 104 QMessageBox msg;
104 105 msg.setText("TODO: API for setting chart type");
105 106 msg.exec();
106 break;
107 }
108 107 }
109 108
110 109 void MainWidget::dataChanged(QString itemText)
@@ -117,6 +116,21 void MainWidget::backgroundChanged(int itemIndex)
117 116 qDebug() << "backgroundChanged: " << itemIndex;
118 117 }
119 118
119 void MainWidget::autoScaleChanged(int value)
120 {
121 if (this->isVisible()) {
122 QMessageBox msg;
123 msg.setText("TODO: APIs for using either auto scaling or explicit values");
124 msg.exec();
125 }
126
127 // TODO: get initial spin box axis values from charts widget
128 m_xMinSpin->setEnabled(value == Qt::Unchecked);
129 m_xMaxSpin->setEnabled(value == Qt::Unchecked);
130 m_yMinSpin->setEnabled(value == Qt::Unchecked);
131 m_yMaxSpin->setEnabled(value == Qt::Unchecked);
132 }
133
120 134 void MainWidget::xMinChanged(int value)
121 135 {
122 136 qDebug() << "xMinChanged: " << value;
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@@ -4,6 +4,7
4 4 #include <QWidget>
5 5
6 6 class ChartWidget;
7 class QSpinBox;
7 8
8 9 class MainWidget : public QWidget
9 10 {
@@ -17,6 +18,7 private slots:
17 18 void chartTypeChanged(int itemIndex);
18 19 void dataChanged(QString itemText);
19 20 void backgroundChanged(int itemIndex);
21 void autoScaleChanged(int value);
20 22 void xMinChanged(int value);
21 23 void xMaxChanged(int value);
22 24 void yMinChanged(int value);
@@ -24,6 +26,10 private slots:
24 26
25 27 private:
26 28 ChartWidget *m_chartWidget;
29 QSpinBox *m_xMinSpin;
30 QSpinBox *m_xMaxSpin;
31 QSpinBox *m_yMinSpin;
32 QSpinBox *m_yMaxSpin;
27 33 };
28 34
29 35 #endif // MAINWIDGET_H
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