From 78c7501680f29b5a920c3886fa1768cfadf68531 Mon Sep 17 00:00:00 2001
From: Bill Somerville <g4wjs@classdesign.com>
Date: Sun, 15 Feb 2015 00:48:38 +0000
Subject: [PATCH] Add a progress dialog to show that FFT optimization is doing
 something

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@4965 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
---
 mainwindow.cpp | 36 +++++++++++++++++++++++++++++++++++-
 mainwindow.h   |  3 +++
 2 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/mainwindow.cpp b/mainwindow.cpp
index 32bece4ef..bef5b4fdb 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -15,6 +15,7 @@
 #include <QDir>
 #include <QDebug>
 #include <QtConcurrent/QtConcurrentRun>
+#include <QProgressDialog>
 
 #include "revision_utils.hpp"
 #include "soundout.h"
@@ -101,10 +102,18 @@ MainWindow::MainWindow(bool multiple, QSettings * settings, QSharedMemory *shdme
   m_transmitting {false},
   m_tune {false},
   m_lastMonitoredFrequency {default_frequency},
-  m_toneSpacing {0.}
+  m_toneSpacing {0.},
+  m_firstDecode {0},
+  m_optimizingProgress {"Optimizing decoder FFTs for your CPU.\n"
+      "Please be patient,\n"
+      "this may take a few minutes", QString {}, 0, 1, this}
 {
   ui->setupUi(this);
 
+  m_optimizingProgress.setWindowModality (Qt::WindowModal);
+  m_optimizingProgress.setAutoReset (false);
+  m_optimizingProgress.setMinimumDuration (15000); // only show after 15s delay
+
   // Closedown.
   connect (ui->actionExit, &QAction::triggered, this, &QMainWindow::close);
 
@@ -1466,6 +1475,31 @@ void MainWindow::on_EraseButton_clicked()                          //Erase
 
 void MainWindow::decodeBusy(bool b)                             //decodeBusy()
 {
+  bool showProgress = false;
+  if (b && m_firstDecode < 65 && ("JT65" == m_mode || "JT9+JT65" == m_mode))
+    {
+      m_firstDecode += 65;
+      if ("JT9+JT65" == m_mode) m_firstDecode = 65 + 9;
+      showProgress = true;
+    }
+  if (b && m_firstDecode != 9 && m_firstDecode != 65 + 9 && ("JT9" == m_mode || "JT9W-1" == m_mode))
+    {
+      m_firstDecode += 9;
+      showProgress = true;
+    }
+  if (showProgress)
+    {
+      // this sequence is needed to create an indeterminate progress
+      // bar
+      m_optimizingProgress.setRange (0, 1);
+      m_optimizingProgress.setValue (0);
+      m_optimizingProgress.setRange (0, 0);
+    }
+  if (!b)
+    {
+      m_optimizingProgress.reset ();
+    }
+
   m_decoderBusy=b;
   ui->DecodeButton->setEnabled(!b);
   ui->actionOpen->setEnabled(!b);
diff --git a/mainwindow.h b/mainwindow.h
index f5f0b793a..685d62c77 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -13,6 +13,7 @@
 #include <QAudioDeviceInfo>
 #include <QScopedPointer>
 #include <QDir>
+#include <QProgressDialog>
 
 #include "soundin.h"
 #include "AudioDevice.hpp"
@@ -366,6 +367,8 @@ private:
   bool m_tune;
   Frequency m_lastMonitoredFrequency;
   double m_toneSpacing;
+  int m_firstDecode;
+  QProgressDialog m_optimizingProgress;
 
   //---------------------------------------------------- private functions
   void readSettings();