From 5ec680d09ced3cdf10ae4fe6ee36985dbcba913c Mon Sep 17 00:00:00 2001
From: Michael Welter <michael@welter-4d.de>
Date: Wed, 20 Oct 2021 23:36:53 +0200
Subject: opentrack: fix compatibility option for obsolete QT

---
 spline/spline-widget.cpp  | 11 ++++++++---
 tracker-fusion/fusion.cpp |  1 +
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/spline/spline-widget.cpp b/spline/spline-widget.cpp
index 514bbf7b..6746a6c0 100644
--- a/spline/spline-widget.cpp
+++ b/spline/spline-widget.cpp
@@ -109,9 +109,11 @@ void spline_widget::drawBackground()
     const int ystep = (int)std::ceil(y_step_), xstep = (int)std::ceil(x_step_);
     const double maxx = config->max_input();
     const double maxy = config->max_output();
-
+#ifndef OTR_OBSOLETE_QT_WORKAROUND
     double space_width = metrics.horizontalAdvance(' ');
-
+#else
+    double space_width = metrics.boundingRect(' ').right();
+#endif
     painter.setPen(palette().text().color());
 
     // vertical grid
@@ -145,8 +147,11 @@ void spline_widget::drawBackground()
 
         const QString text = QString::number(i);
         QRectF rect = metrics.boundingRect(text);
+#ifndef OTR_OBSOLETE_QT_WORKAROUND
         double advance = metrics.horizontalAdvance(text);
-
+#else
+        double advance = metrics.boundingRect(text).right();
+#endif
         painter.drawText(QPointF(x - advance/2 - rect.left(),
                                  pixel_bounds.bottom() + metrics.lineSpacing()),
                          text);
diff --git a/tracker-fusion/fusion.cpp b/tracker-fusion/fusion.cpp
index 47dc0d13..56a5fa33 100644
--- a/tracker-fusion/fusion.cpp
+++ b/tracker-fusion/fusion.cpp
@@ -14,6 +14,7 @@
 #include <QDebug>
 #include <QMessageBox>
 #include <QApplication>
+#include <cassert>
 
 static const char* own_name = "fusion";
 
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