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Cleanup: Remove global QFuture from exportFuncs

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When exporting dives we show a message. The message is closed when
the export is finished. This is coordinated by a QFuture. Instead
of keeping a global QFuture in the export-code, pass it around
as a local variable.

This is supported according to Qt's documentation:
"QFuture is a lightweight reference counted class that can be
passed by value." and the source code indicates the same.

Not only does this remove a global, it also makes the code
more flexible: Now we could show one notification per export,
for example.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2020-02-06 22:18:42 +01:00 committed by Dirk Hohndel
parent 2cea115ddb
commit 5b302235f4
3 changed files with 7 additions and 7 deletions
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4
backend-shared/exportfuncs.cpp
View file

@ -311,8 +311,8 @@ std::vector<const dive_site *> exportFuncs::getDiveSitesToExport(bool selectedOn
return res;
}
void exportFuncs::exportUsingStyleSheet(QString filename, bool doExport, int units,
QFuture<int> exportFuncs::exportUsingStyleSheet(QString filename, bool doExport, int units,
QString stylesheet, bool anonymize)
{
future = QtConcurrent::run(export_dives_xslt, filename.toUtf8(), doExport, units, stylesheet.toUtf8(), anonymize);
return QtConcurrent::run(export_dives_xslt, filename.toUtf8(), doExport, units, stylesheet.toUtf8(), anonymize);
}

3
backend-shared/exportfuncs.h
View file

@ -16,9 +16,8 @@ public:
void export_TeX(const char *filename, const bool selected_only, bool plain);
void export_depths(const char *filename, const bool selected_only);
std::vector<const dive_site *> getDiveSitesToExport(bool selectedOnly);
void exportUsingStyleSheet(QString filename, bool doExport, int units,
QFuture<int> exportUsingStyleSheet(QString filename, bool doExport, int units,
QString stylesheet, bool anonymize);
QFuture<int> future;
// prepareDivesForUploadDiveLog
// prepareDivesForUploadDiveShare

7
desktop-widgets/divelogexportdialog.cpp
View file

@ -214,9 +214,10 @@ void DiveLogExportDialog::on_buttonBox_accepted()
qPrefDisplay::set_lastDir(fileInfo.dir().path());
// the non XSLT exports are called directly above, the XSLT based ons are called here
if (!stylesheet.isEmpty()) {
exportFuncs::instance()->exportUsingStyleSheet(filename, ui->exportSelected->isChecked(), ui->CSVUnits_2->currentIndex(), stylesheet.toUtf8(), ui->anonymize->isChecked());
MainWindow::instance()->getNotificationWidget()->showNotification(tr("Please wait, exporting..."), KMessageWidget::Information);
MainWindow::instance()->getNotificationWidget()->setFuture(exportFuncs::instance()->future);
QFuture<void> future = exportFuncs::instance()->exportUsingStyleSheet(filename, ui->exportSelected->isChecked(),
ui->CSVUnits_2->currentIndex(), stylesheet.toUtf8(), ui->anonymize->isChecked());
MainWindow::instance()->getNotificationWidget()->showNotification(tr("Please wait, exporting..."), KMessageWidget::Information);
MainWindow::instance()->getNotificationWidget()->setFuture(future);
}
}
}