1 files changed, 54 insertions, 0 deletions
diff --git a/src/statistics/TimeChartPage.cpp b/src/statistics/TimeChartPage.cpp
new file mode 100644
index 0000000..62ca63b
--- /dev/null
+++ b/src/statistics/TimeChartPage.cpp
@@ -0,0 +1,54 @@
+#include "TimeChartPage.h"
+#include "StatisticsParams.h"
+#include "../charts/TimeChart.h"
+#include "../dictionary/CardPack.h"
+
+TimeChartPage::TimeChartPage(const StatisticsParams* statParams):
+    BaseStatPage(statParams)
+{
+}
+
+QWidget* TimeChartPage::createChart()
+{
+    chart = new TimeChart;
+    chart->setLabels(tr("Date"), tr("Cards"));
+    return chart;
+}
+
+void TimeChartPage::updateDataSet()
+{
+    QList<QDateTime> dates = getDates(statParams->getCardPack());
+    int period = statParams->getTimePeriod();
+    if(period == -1)
+        period = getStudyPeriodLength(dates);
+    int reviewsNum = getReviewsNum(dates, period);
+    totalReviewsLabel->setText(tr("Total: %1").arg(reviewsNum));
+    chart->setDates(dates, period, getDataDirection());
+}
+
+int TimeChartPage::getStudyPeriodLength(const QList<QDateTime>& dates) const
+{
+    const int minPeriod = 7;
+    QDateTime minDate = QDateTime::currentDateTime();
+    QDateTime maxDate = minDate;
+    foreach(QDateTime date, dates)
+        if(date < minDate)
+            minDate = date;
+        else if(date > maxDate)
+                maxDate = date;
+    int res = minDate.daysTo(maxDate) + 1;
+    if(res < minPeriod)
+        res = minPeriod;
+    return res;
+}
+
+int TimeChartPage::getReviewsNum(const QList<QDateTime>& dates,
+    int period) const
+{
+    QDateTime curDate = QDateTime::currentDateTime();
+    int res = 0;
+    foreach(QDateTime date, dates)
+        if(qAbs(date.daysTo(curDate)) < period)
+            res++;
+    return res;
+}