diff base/ZoomLevel.cpp @ 1532:5360f7aba189 zoom

Pull out ZoomLevel, add inexact frame/pixel conversion functions and streaming

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/base/ZoomLevel.cpp	Wed Sep 19 15:41:44 2018 +0100
@@ -0,0 +1,25 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#include "ZoomLevel.h"
+
+std::ostream &operator<<(std::ostream &s, const ZoomLevel &z) {
+    if (z.zone == ZoomLevel::PixelsPerFrame) {
+        s << "1/" << z.level;
+    } else {
+        s << z.level;
+    }
+    return s;
+}
+