+ return QPoint(get_x(), 0);
+}
+
+QRectF TimeMarker::label_rect(const QRectF &rect) const
+{
+ const float x = (time_ - view_.offset()) / view_.scale();
+
+ QFontMetrics m(QApplication::font());
+ const float text_width =
+ max(m.boundingRect(get_text()).size().width(), ArrowSize);
+ const float text_height = m.boundingRect("Tg").size().height();
+
+ const QSizeF label_size(
+ text_width + View::LabelPadding.width() * 2,
+ text_height + View::LabelPadding.height() * 2);
+ const float top = rect.height() - label_size.height() -
+ TimeMarker::Offset - TimeMarker::ArrowSize - 0.5f;
+ const float height = label_size.height();
+
+ return QRectF(x - label_size.width() / 2, top,
+ label_size.width(), height);
+}
+
+void TimeMarker::paint_label(QPainter &p, const QRect &rect)
+{
+ if (!enabled())
+ return;
+
+ const qreal x = (time_ - view_.offset()) / view_.scale();
+ const QRectF r(label_rect(rect));
+
+ const QPointF points[] = {
+ r.topLeft(),
+ r.bottomLeft(),
+ QPointF(max(r.left(), x - ArrowSize), r.bottom()),
+ QPointF(x, rect.bottom()),
+ QPointF(min(r.right(), x + ArrowSize), r.bottom()),
+ r.bottomRight(),
+ r.topRight()
+ };
+
+ const QPointF highlight_points[] = {
+ QPointF(r.left() + 1, r.top() + 1),
+ QPointF(r.left() + 1, r.bottom() - 1),
+ QPointF(max(r.left() + 1, x - ArrowSize), r.bottom() - 1),
+ QPointF(min(max(r.left() + 1, x), r.right() - 1),
+ rect.bottom() - 1),
+ QPointF(min(r.right() - 1, x + ArrowSize), r.bottom() - 1),
+ QPointF(r.right() - 1, r.bottom() - 1),
+ QPointF(r.right() - 1, r.top() + 1),
+ };
+
+ if (selected()) {
+ p.setPen(highlight_pen());
+ p.setBrush(Qt::transparent);
+ p.drawPolygon(points, countof(points));