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24 | 24 | #include "chartdatetimeaxisy_p.h" |
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25 | 25 | #include "domain_p.h" |
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26 | 26 | #include <cmath> |
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27 | #include <QDebug> | |
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28 | 27 | |
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29 | 28 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
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30 | 29 | /*! |
| @@ -34,24 +33,33 QTCOMMERCIALCHART_BEGIN_NAMESPACE | |||
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34 | 33 | |
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35 | 34 | The labels can be configured by setting an appropriate DateTime format. |
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36 | 35 | QDateTimeAxis works correctly with dates from 4714 BCE to 287396 CE |
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37 |
There are also other limitiation |
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36 | There are also other limitiation related to QDateTime . Please refer to QDateTime documentation. | |
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38 | 37 | QDateTimeAxis can be setup to show axis line with tick marks, grid lines and shades. |
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39 | 38 | |
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39 | NOTE: QDateTimeAxis is disabled on ARM platform at the present time. | |
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40 | ||
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40 | 41 | \image api_datatime_axis.png |
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41 | 42 | |
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42 | Example code on how to use QDateTimeAxis. | |
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43 | QDateTimeAxis can be used with QLineSeries, QSplineSeries or QScatterSeries. | |
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44 | To add a data point to the series QDateTime::toMSecsSinceEpoch() is used. | |
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43 | 45 | \code |
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44 | QChartView *chartView = new QChartView; | |
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45 | 46 | QLineSeries *series = new QLineSeries; |
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46 | 47 | |
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47 | 48 | QDateTime xValue; |
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48 | 49 | xValue.setDate(QDate(2012, 1 , 18)); |
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49 | 50 | xValue.setTime(QTime(9, 34)); |
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50 | series->append(xValue.toMSecsSinceEpoch(), 12); | |
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51 | qreal yValue = 12; | |
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52 | series->append(xValue.toMSecsSinceEpoch(), yValue); | |
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51 | 53 | |
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52 | 54 | xValue.setDate(QDate(2013, 5 , 11)); |
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53 | 55 | xValue.setTime(QTime(11, 14)); |
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54 | series->append(xValue.toMSecsSinceEpoch(), 22); | |
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56 | qreal yValue = 22; | |
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57 | series->append(xValue.toMSecsSinceEpoch(), yValue); | |
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58 | \endcode | |
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59 | ||
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60 | Adding the series to the chart and setting up the QDateTimeAxis. | |
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61 | \code | |
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62 | QChartView *chartView = new QChartView; | |
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55 | 63 | chartView->chart()->addSeries(series); |
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56 | 64 | |
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57 | 65 | // ... |
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