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diff src/panned.cpp @ 679:ad3e5693cb76 scale-alternative

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Alternative, and much simpler, approach to scaling
author Chris Cannam
date Thu, 06 Dec 2018 15:55:20 +0000
parents ce29dc775650
children
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--- a/src/panned.cpp	Thu Dec 06 13:54:34 2018 +0000
+++ b/src/panned.cpp	Thu Dec 06 15:55:20 2018 +0000
@@ -34,6 +34,19 @@
     connect(m_dragTimer, SIGNAL(timeout()), this, SLOT(dragTimerTimeout()));
     setRenderHints(QPainter::Antialiasing |
                    QPainter::TextAntialiasing);
+
+    double baseEm;
+#ifdef Q_OS_MAC
+    baseEm = 17.0;
+#else
+    baseEm = 15.0;
+#endif
+    double em = QFontMetrics(QFont()).height();
+    double ratio = em / baseEm;
+
+    QMatrix m = matrix();
+    m.scale(ratio, ratio);
+    setMatrix(m);
 }
 
 void