1 files changed, 43 insertions, 0 deletions
diff --git a/src/charts/ChartToolTip.cpp b/src/charts/ChartToolTip.cpp
new file mode 100644
index 0000000..15783ea
--- /dev/null
+++ b/src/charts/ChartToolTip.cpp
@@ -0,0 +1,43 @@
+#include "ChartToolTip.h"
+
+const QFont ChartToolTip::Font("Sans Serif", 11);
+
+ChartToolTip::ChartToolTip(const QPointF& pos, const QString& text):
+    text(text)
+{
+    setPos(pos);
+    document.setDefaultFont(Font);
+    document.setHtml(text);
+    QSizeF docSize = document.size();
+    setRect(QRectF(QPointF(-docSize.width() / 2, -docSize.height() / 2), docSize));
+}
+
+void ChartToolTip::paint(QPainter* painter, const QStyleOptionGraphicsItem*,
+    QWidget*)
+{
+    drawFrame(painter);
+    drawText(painter);
+}
+
+void ChartToolTip::drawFrame(QPainter* painter)
+{
+    painter->setPen(QPen(Qt::black));
+    painter->setBrush(QBrush(Qt::white));
+    painter->drawRect(rect());
+}
+
+void ChartToolTip::drawText(QPainter* painter)
+{
+    painter->translate(rect().topLeft());
+    document.drawContents(painter);
+}
+
+void ChartToolTip::adjustPos()
+{
+    QRectF toolTipRect = mapRectToScene(boundingRect());
+    QRectF sceneRect = scene()->sceneRect();
+    if(toolTipRect.right() >= sceneRect.right())
+        moveBy(-(toolTipRect.right() - sceneRect.right()) - 1, 0);
+    if(toolTipRect.top() <= sceneRect.top())
+        moveBy(0, sceneRect.top() - toolTipRect.top() + 1);
+}