cabana: fixed chat tool tips was displayed outside of the viewport (#27770)

tools/cabana/chartswidget.cc

@@ -71,13 +71,13 @@ ChartsWidget::ChartsWidget(QWidget *parent) : align_timer(this), QFrame(parent)
   charts_layout = new QGridLayout();
   charts_layout->setSpacing(10);
 
-  QWidget *charts_container = new QWidget(this);
+  charts_container = new QWidget(this);
   QVBoxLayout *charts_main_layout = new QVBoxLayout(charts_container);
   charts_main_layout->setContentsMargins(0, 0, 0, 0);
   charts_main_layout->addLayout(charts_layout);
   charts_main_layout->addStretch(0);
 
-  QScrollArea *charts_scroll = new QScrollArea(this);
+  charts_scroll = new QScrollArea(this);
   charts_scroll->setFrameStyle(QFrame::NoFrame);
   charts_scroll->setWidgetResizable(true);
   charts_scroll->setWidget(charts_container);
@@ -159,8 +159,13 @@ void ChartsWidget::zoomUndo() {
 }
 
 void ChartsWidget::showValueTip(double sec) {
+  const QRect visible_rect(-charts_container->pos(), charts_scroll->viewport()->size());
   for (auto c : charts) {
-    sec >= 0 ? c->showTip(sec) : c->hideTip();
+    if (sec >= 0 && visible_rect.contains(QRect(c->mapTo(charts_container, QPoint(0, 0)), c->size()))) {
+      c->showTip(sec);
+    } else {
+      c->hideTip();
+    }
   }
 }
 

tools/cabana/chartswidget.h

@@ -164,6 +164,8 @@ private:
   QAction *remove_all_btn;
   QGridLayout *charts_layout;
   QList<ChartView *> charts;
+  QWidget *charts_container;
+  QScrollArea *charts_scroll;
   uint32_t max_chart_range = 0;
   bool is_zoomed = false;
   std::pair<double, double> display_range;