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-rw-r--r--src/widgets/dialogs/qfiledialog.cpp45
-rw-r--r--src/widgets/dialogs/qfiledialog.h1
-rw-r--r--src/widgets/doc/snippets/code/src_gui_dialogs_qfiledialog.cpp5
3 files changed, 51 insertions, 0 deletions
diff --git a/src/widgets/dialogs/qfiledialog.cpp b/src/widgets/dialogs/qfiledialog.cpp
index a89192e76f..a1b9003c1c 100644
--- a/src/widgets/dialogs/qfiledialog.cpp
+++ b/src/widgets/dialogs/qfiledialog.cpp
@@ -2448,6 +2448,51 @@ void QFileDialog::getOpenFileContent(const QString &nameFilter, const std::funct
}
/*!
+ This is a convenience static function that saves \a fileContent to a file, using
+ a file name and location chosen by the user. \a fileNameHint can be provided to
+ suggest a file name to the user.
+
+ This function is used to save files to the local file system on Qt for WebAssembly, where
+ the web sandbox places restrictions on how such access may happen. Its implementation will
+ make the browser display a native file dialog, where the user makes the file selection.
+
+ It can also be used on other platforms, where it will fall back to using QFileDialog.
+
+ The function is asynchronous and returns immediately.
+
+ \snippet code/src_gui_dialogs_qfiledialog.cpp 16
+ \since 5.14
+*/
+void QFileDialog::saveFileContent(const QByteArray &fileContent, const QString &fileNameHint)
+{
+#ifdef Q_OS_WASM
+ QWasmLocalFileAccess::saveFile(fileContent.constData(), fileContent.size(), fileNameHint.toStdString());
+#else
+ QFileDialog *dialog = new QFileDialog();
+ dialog->setAcceptMode(QFileDialog::AcceptSave);
+ dialog->setFileMode(QFileDialog::AnyFile);
+ dialog->selectFile(fileNameHint);
+
+ auto fileSelected = [=](const QString &fileName) {
+ if (!fileName.isNull()) {
+ QFile selectedFile(fileName);
+ if (selectedFile.open(QIODevice::WriteOnly))
+ selectedFile.write(fileContent);
+ }
+ };
+
+ auto dialogClosed = [=](int code) {
+ Q_UNUSED(code);
+ delete dialog;
+ };
+
+ connect(dialog, &QFileDialog::fileSelected, fileSelected);
+ connect(dialog, &QFileDialog::finished, dialogClosed);
+ dialog->show();
+#endif
+}
+
+/*!
This is a convenience static function that will return a file name selected
by the user. The file does not have to exist.
diff --git a/src/widgets/dialogs/qfiledialog.h b/src/widgets/dialogs/qfiledialog.h
index 354a1f928b..790f52f2e7 100644
--- a/src/widgets/dialogs/qfiledialog.h
+++ b/src/widgets/dialogs/qfiledialog.h
@@ -284,6 +284,7 @@ public:
static void getOpenFileContent(const QString &nameFilter,
const std::function<void(const QString &, const QByteArray &)> &fileContentsReady);
+ static void saveFileContent(const QByteArray &fileContent, const QString &fileNameHint = QString());
protected:
QFileDialog(const QFileDialogArgs &args);
diff --git a/src/widgets/doc/snippets/code/src_gui_dialogs_qfiledialog.cpp b/src/widgets/doc/snippets/code/src_gui_dialogs_qfiledialog.cpp
index 39aca459db..7ccd827a04 100644
--- a/src/widgets/doc/snippets/code/src_gui_dialogs_qfiledialog.cpp
+++ b/src/widgets/doc/snippets/code/src_gui_dialogs_qfiledialog.cpp
@@ -155,3 +155,8 @@ auto fileOpenCompleted = [](const QString &fileName, const QByteArray &fileConte
}
QFileDialog::getOpenFileContent("Images (*.png *.xpm *.jpg)", fileContentReady);
//! [15]
+
+//! [16]
+QByteArray imageData; // obtained from e.g. QImage::save()
+QFileDialog::saveFile("myimage.png", imageData);
+//! [16]