Add visual feedback to FSWidget

* show busy cursor when gathering data
* emit statusbarMessage() when gathering data

The latter shows a summary with the time it has taken to gather data,
the SQL query count and the number of files analyzed.

3 files changed, 19 insertions, 2 deletions

diff --git a/fswidget.cpp b/fswidget.cpp
index f282a6c..53ef56e 100644
--- a/fswidget.cpp
+++ b/fswidget.cpp
@@ -12,6 +12,7 @@
 #include <QDirIterator>
 #include <QJsonObject>
 #include <QSqlDatabase>
+#include <QElapsedTimer>
 #include <QSettings>
 #include <QApplication>
 
@@ -162,6 +163,12 @@ void FSWidget::removeItem(QComboBox *cb){
 
 void FSWidget::gatherData(const QString &curDir){
     //setup view
+    qApp->setOverrideCursor(Qt::BusyCursor);
+    mQueryCount = 0;
+    int fileCount = 0;
+    QElapsedTimer timer;
+    timer.start();
+    emit message(tr("Gathering data..."));
     mFileView->setSortingEnabled(false);
     mFileView->setRootIsDecorated(false);
     mModel->clear();
@@ -191,6 +198,7 @@ void FSWidget::gatherData(const QString &curDir){
     mFileView->setUpdatesEnabled(false);
     while(it.hasNext()){
         QFileInfo fi = it.next();
+        ++fileCount;
         QMimeType mimeType = mimedb.mimeTypeForFile(fi);
         QString mimeName = mimeType.name();
         qint64 seconds = 0;
@@ -262,6 +270,9 @@ void FSWidget::gatherData(const QString &curDir){
     }
     mFileView->setUpdatesEnabled(true);
     mFileView->setSortingEnabled(true);
+    qApp->restoreOverrideCursor();
+    QString msg = QString(tr("Analyzed %1 files in %2 ms using %3 queries").arg(QString::number(fileCount)).arg(QString::number(timer.elapsed())).arg(QString::number(mQueryCount)));
+    emit message(msg);
 }
 
 void FSWidget::advanceDir(int by){
@@ -276,12 +287,13 @@ void FSWidget::advanceDir(int by){
     mDirCB->setCurrentIndex(nextIdx);
 }
 
-int FSWidget::queryCount(QSqlQuery &q, const QString &arg) const{
+int FSWidget::queryCount(QSqlQuery &q, const QString &arg){
     int retval = -1;
     q.bindValue(":arg", arg);
     q.exec();
     while(q.next()){
         retval = q.value(0).toInt();
     }
+    ++mQueryCount;
     return retval;
 }
diff --git a/fswidget.h b/fswidget.h
index 876d0d0..0b977ff 100644
--- a/fswidget.h
+++ b/fswidget.h
@@ -24,7 +24,10 @@ class FSWidget : public QWidget {
         void removeItem(QComboBox *cb);
         void gatherData(const QString &curDir);
         void advanceDir(int by);
-        int queryCount(QSqlQuery &q, const QString &arg) const;
+        int queryCount(QSqlQuery &q, const QString &arg);
+
+    signals:
+        void message(QString msg);
 
     private:
         void setupWidget();
@@ -33,6 +36,7 @@ class FSWidget : public QWidget {
         QTreeView *mFileView;
         QStandardItemModel *mModel;
         QSortFilterProxyModel *mProxy;
+        int mQueryCount;
 };
 
 #endif // FSWIDGET_H
diff --git a/shemov.cpp b/shemov.cpp
index 242bf94..2a7aa7e 100644
--- a/shemov.cpp
+++ b/shemov.cpp
@@ -64,6 +64,7 @@ SheMov::SheMov(QWidget *parent, Qt::WindowFlags flags) : QMainWindow(parent, fla
     connect(this, &SheMov::configChanged, mFSWidget, &FilesystemWidget::configChanged);
     mFileWidget = new FSWidget;
     mTab->addTab(mFileWidget, tr("FS"));
+    connect(mFileWidget, &FSWidget::message, this, &SheMov::statusbarMessage);
 
     //experimental
     splash.showMessage(tr("Creating Movie archive..."), Qt::AlignHCenter, Qt::yellow);