1 files changed, 82 insertions, 0 deletions
diff --git a/src/charts/axis/chartaxiselement.cpp b/src/charts/axis/chartaxiselement.cpp
index fc2b3e27..62da84f4 100644
--- a/src/charts/axis/chartaxiselement.cpp
+++ b/src/charts/axis/chartaxiselement.cpp
@@ -157,6 +157,60 @@ void ChartAxisElement::handleLabelsPositionChanged()
     presenter()->layout()->invalidate();
 }
 
+void ChartAxisElement::valueLabelEdited(qreal oldValue, qreal newValue)
+{
+    qreal range = max() - min();
+    qreal center = ((max() - min()) / 2.0) + min();
+    qreal newRange = 0.0;
+    auto label = static_cast<ValueAxisLabel *>(this->sender());
+    if ((oldValue >= center && newValue >= min())
+     || (oldValue <  center && newValue >= max() && oldValue != min())) {
+        newRange = range * ((newValue - min()) / (oldValue - min()));
+        if (newRange > 0) {
+            m_axis->setRange(min(), min() + newRange);
+            return;
+        }
+    } else if ((oldValue >= center && newValue <= min() && max() != oldValue)
+            || (oldValue <  center && newValue <  max())) {
+        newRange = range * ((max() - newValue) / (max() - oldValue));
+        if (newRange > 0) {
+            m_axis->setRange(max() - newRange, max());
+            return;
+        }
+    }
+    label->reloadBeforeEditContent();
+}
+
+void ChartAxisElement::dateTimeLabelEdited(const QDateTime &oldTime, const QDateTime &newTime)
+{
+    qreal range = max() - min();
+    qreal center = ((max() - min()) / 2.0) + min();
+    qreal newRange = 0.0;
+    qint64 oldValue = oldTime.toMSecsSinceEpoch();
+    qint64 newValue = newTime.toMSecsSinceEpoch();
+    if ((oldValue >= center && newValue >= min())
+     || (oldValue <  center && newValue >= max() && oldValue != min())) {
+        newRange = range * ((newValue - min()) / (oldValue - min()));
+        if (newRange > 0) {
+            m_axis->setRange(
+                        QDateTime::fromMSecsSinceEpoch(min()),
+                        QDateTime::fromMSecsSinceEpoch(min() + newRange));
+            return;
+        }
+    } else if ((oldValue >= center && newValue <= min() && max() != oldValue)
+            || (oldValue <  center && newValue <  max())) {
+        newRange = range * ((max() - newValue) / (max() - oldValue));
+        if (newRange > 0) {
+            m_axis->setRange(max() - newRange, max());
+            m_axis->setRange(
+                        QDateTime::fromMSecsSinceEpoch(max() - newRange),
+                        QDateTime::fromMSecsSinceEpoch(max()));
+            return;
+        }
+    }
+    static_cast<DateTimeAxisLabel *>(this->sender())->reloadBeforeEditContent();
+}
+
 void ChartAxisElement::handleLabelsVisibleChanged(bool visible)
 {
     QGraphicsLayoutItem::updateGeometry();
@@ -502,6 +556,34 @@ QStringList ChartAxisElement::createDateTimeLabels(qreal min, qreal max,int tick
     return labels;
 }
 
+
+bool ChartAxisElement::labelsEditable() const
+{
+    return m_labelsEditable;
+}
+
+void ChartAxisElement::setLabelsEditable(bool labelsEditable)
+{
+    if (axis()->type() == QAbstractAxis::AxisTypeValue
+            || axis()->type() == QAbstractAxis::AxisTypeDateTime) {
+        labelGroup()->setHandlesChildEvents(!labelsEditable);
+        const QList<QGraphicsItem *> childItems = labelGroup()->childItems();
+        for (auto item : childItems) {
+            switch (axis()->type()) {
+            case QtCharts::QAbstractAxis::AxisTypeValue:
+                static_cast<ValueAxisLabel *>(item)->setEditable(labelsEditable);
+                break;
+            case QtCharts::QAbstractAxis::AxisTypeDateTime:
+                static_cast<DateTimeAxisLabel *>(item)->setEditable(labelsEditable);
+                break;
+            default:
+                break;
+            }
+        }
+        m_labelsEditable = labelsEditable;
+    }
+}
+
 void ChartAxisElement::axisSelected()
 {
     emit clicked();