1 files changed, 50 insertions, 0 deletions
diff --git a/src/charts/ChartMarker.cpp b/src/charts/ChartMarker.cpp
new file mode 100644
index 0000000..7fdd8cd
--- /dev/null
+++ b/src/charts/ChartMarker.cpp
@@ -0,0 +1,50 @@
+#include "ChartMarker.h"
+#include "ChartToolTip.h"
+
+const QPointF ChartMarker::ToolTipOffset(45, -35);
+const QColor ChartMarker::Color(Qt::blue);
+
+ChartMarker::ChartMarker(const QPointF& center, const QString& toolTipText):
+    radius(Radius), toolTip(NULL), toolTipText(toolTipText)
+{
+    setPos(center);
+    setRect(QRectF(-HoverRadius, -HoverRadius,
+        2 * HoverRadius, 2 * HoverRadius));
+    setAcceptHoverEvents(true);
+}
+
+ChartMarker::~ChartMarker()
+{
+    delete toolTip;
+}
+
+void ChartMarker::hoverEnterEvent(QGraphicsSceneHoverEvent*)
+{
+    radius = HighlightedRadius;
+    update();
+    if(!toolTip)
+        createToolTip();
+    toolTip->show();
+}
+
+void ChartMarker::createToolTip()
+{
+    toolTip = new ChartToolTip(mapToScene(ToolTipOffset), toolTipText);
+    scene()->addItem(toolTip);
+    toolTip->adjustPos();
+}
+
+void ChartMarker::hoverLeaveEvent(QGraphicsSceneHoverEvent*)
+{
+    radius = Radius;
+    update();
+    toolTip->hide();
+}
+
+void ChartMarker::paint(QPainter* painter, const QStyleOptionGraphicsItem*,
+    QWidget*)
+{
+    painter->setPen(Color);
+    painter->setBrush(Color);
+    painter->drawEllipse(QPointF(), radius, radius);
+}