From ced0548eac9932f80994bde76c3c2bb7a14a4b54 Mon Sep 17 00:00:00 2001
From: Joel Holdsworth <joel@airwebreathe.org.uk>
Date: Sun, 30 Nov 2014 13:48:37 +0000
Subject: [PATCH] TimeMarker: Added default get_label_rect implementation

---
 pv/view/timemarker.cpp | 21 +++++++++++++++++++++
 pv/view/timemarker.hpp |  2 +-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/pv/view/timemarker.cpp b/pv/view/timemarker.cpp
index 9d6e7fd..d4bd714 100644
--- a/pv/view/timemarker.cpp
+++ b/pv/view/timemarker.cpp
@@ -26,7 +26,9 @@
 
 #include "view.hpp"
 
+#include <QApplication>
 #include <QFormLayout>
+#include <QFontMetrics>
 #include <QPainter>
 
 #include <pv/util.hpp>
@@ -86,6 +88,25 @@ void TimeMarker::paint(QPainter &p, const QRect &rect)
 	p.drawLine(QPointF(x, rect.top()), QPointF(x, rect.bottom()));
 }
 
+QRectF TimeMarker::get_label_rect(const QRect &rect) const
+{
+	const float x = (time_ - view_.offset()) / view_.scale();
+
+	QFontMetrics m(QApplication::font());
+	QSize text_size = m.boundingRect(
+		pv::util::format_time(time_, view_.tick_prefix(), 2)).size();
+
+	const QSizeF label_size(
+		text_size.width() + View::LabelPadding.width() * 2,
+		text_size.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 - 0.5f, top,
+		label_size.width(), height);
+}
+
 void TimeMarker::paint_label(QPainter &p, const QRect &rect)
 {
 	const qreal x = (time_ - view_.offset()) / view_.scale();
diff --git a/pv/view/timemarker.hpp b/pv/view/timemarker.hpp
index 21de262..ae54749 100644
--- a/pv/view/timemarker.hpp
+++ b/pv/view/timemarker.hpp
@@ -84,7 +84,7 @@ public:
 	 * @param rect The rectangle of the ruler client area.
 	 * @return Returns the label rectangle.
 	 */
-	virtual QRectF get_label_rect(const QRect &rect) const = 0;
+	virtual QRectF get_label_rect(const QRect &rect) const;
 
 	/**
 	 * Paints the marker's label to the ruler.
-- 
2.30.2