diff data/fileio/ProgressPrinter.cpp @ 384:6f6ab834449d spectrogram-cache-rejig

* Merge from trunk

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/data/fileio/ProgressPrinter.cpp	Wed Feb 27 11:59:42 2008 +0000
@@ -0,0 +1,48 @@
+/* -*- 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 file copyright 2007 QMUL.
+    
+    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 "ProgressPrinter.h"
+
+#include <iostream>
+
+ProgressPrinter::ProgressPrinter(QString prefix, QObject *parent) :
+    QObject(parent),
+    m_prefix(prefix),
+    m_lastProgress(0)
+{
+}
+
+ProgressPrinter::~ProgressPrinter()
+{
+    if (m_lastProgress > 0 && m_lastProgress != 100) {
+        std::cerr << "\r\n";
+    }
+    std::cerr << "(progress printer dtor)" << std::endl;
+}
+
+void
+ProgressPrinter::progress(int progress)
+{
+    if (progress == m_lastProgress) return;
+    if (progress == 100) std::cerr << "\r\n";
+    else {
+        std::cerr << "\r"
+                  << m_prefix.toStdString() 
+                  << (m_prefix == "" ? "" : " ")
+                  << progress << "%";
+    }
+    m_lastProgress = progress;
+}
+