From baea0f5cb0e7a711d748cef7bf6e93c191ef30bb Mon Sep 17 00:00:00 2001
From: Howard Stearns <howard@highfidelity.io>
Date: Sun, 16 Oct 2016 17:27:51 -0700
Subject: [PATCH] create a directory chooser that works in hmd, and use it

---
 interface/src/ui/Snapshot.cpp    |  2 +-
 libraries/ui/src/OffscreenUi.cpp | 26 ++++++++++++++++++++++++++
 libraries/ui/src/OffscreenUi.h   |  3 +++
 3 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/interface/src/ui/Snapshot.cpp b/interface/src/ui/Snapshot.cpp
index 1f66d51758..3334b0301b 100644
--- a/interface/src/ui/Snapshot.cpp
+++ b/interface/src/ui/Snapshot.cpp
@@ -106,7 +106,7 @@ QFile* Snapshot::savedFileForSnapshot(QImage & shot, bool isTemporary) {
         QString snapshotFullPath = snapshotsLocation.get();
 
         if (snapshotFullPath.isEmpty()) {
-            snapshotFullPath = QFileDialog::getExistingDirectory(nullptr, "Choose Snapshots Directory", snapshotsLocation.get());
+            snapshotFullPath = OffscreenUi::getExistingDirectory(nullptr, "Choose Snapshots Directory", QStandardPaths::writableLocation(QStandardPaths::DesktopLocation));
             snapshotsLocation.set(snapshotFullPath);
         }
 
diff --git a/libraries/ui/src/OffscreenUi.cpp b/libraries/ui/src/OffscreenUi.cpp
index 8cae137f67..ca7d3f7c17 100644
--- a/libraries/ui/src/OffscreenUi.cpp
+++ b/libraries/ui/src/OffscreenUi.cpp
@@ -616,6 +616,28 @@ QString OffscreenUi::fileSaveDialog(const QString& caption, const QString& dir,
     return fileDialog(map);
 }
 
+QString OffscreenUi::existingDirectoryDialog(const QString& caption, const QString& dir, const QString& filter, QString* selectedFilter, QFileDialog::Options options) {
+    if (QThread::currentThread() != thread()) {
+        QString result;
+        QMetaObject::invokeMethod(this, "existingDirectoryDialog", Qt::BlockingQueuedConnection,
+                                  Q_RETURN_ARG(QString, result),
+                                  Q_ARG(QString, caption),
+                                  Q_ARG(QString, dir),
+                                  Q_ARG(QString, filter),
+                                  Q_ARG(QString*, selectedFilter),
+                                  Q_ARG(QFileDialog::Options, options));
+        return result;
+    }
+
+    QVariantMap map;
+    map.insert("caption", caption);
+    map.insert("dir", QUrl::fromLocalFile(dir));
+    map.insert("filter", filter);
+    map.insert("options", static_cast<int>(options));
+    map.insert("selectDirectory", true);
+    return fileDialog(map);
+}
+
 QString OffscreenUi::getOpenFileName(void* ignored, const QString &caption, const QString &dir, const QString &filter, QString *selectedFilter, QFileDialog::Options options) {
     return DependencyManager::get<OffscreenUi>()->fileOpenDialog(caption, dir, filter, selectedFilter, options);
 }
@@ -624,6 +646,10 @@ QString OffscreenUi::getSaveFileName(void* ignored, const QString &caption, cons
     return DependencyManager::get<OffscreenUi>()->fileSaveDialog(caption, dir, filter, selectedFilter, options);
 }
 
+QString OffscreenUi::getExistingDirectory(void* ignored, const QString &caption, const QString &dir, const QString &filter, QString *selectedFilter, QFileDialog::Options options) {
+    return DependencyManager::get<OffscreenUi>()->existingDirectoryDialog(caption, dir, filter, selectedFilter, options);
+}
+
 bool OffscreenUi::eventFilter(QObject* originalDestination, QEvent* event) {
     if (!filterEnabled(originalDestination, event)) {
         return false;
diff --git a/libraries/ui/src/OffscreenUi.h b/libraries/ui/src/OffscreenUi.h
index bc0a6bf544..2e6e853336 100644
--- a/libraries/ui/src/OffscreenUi.h
+++ b/libraries/ui/src/OffscreenUi.h
@@ -115,11 +115,14 @@ public:
 
     Q_INVOKABLE QString fileOpenDialog(const QString &caption = QString(), const QString &dir = QString(), const QString &filter = QString(), QString *selectedFilter = 0, QFileDialog::Options options = 0);
     Q_INVOKABLE QString fileSaveDialog(const QString &caption = QString(), const QString &dir = QString(), const QString &filter = QString(), QString *selectedFilter = 0, QFileDialog::Options options = 0);
+    Q_INVOKABLE QString existingDirectoryDialog(const QString &caption = QString(), const QString &dir = QString(), const QString &filter = QString(), QString *selectedFilter = 0, QFileDialog::Options options = 0);
 
     // Compatibility with QFileDialog::getOpenFileName
     static QString getOpenFileName(void* ignored, const QString &caption = QString(), const QString &dir = QString(), const QString &filter = QString(), QString *selectedFilter = 0, QFileDialog::Options options = 0);
     // Compatibility with QFileDialog::getSaveFileName
     static QString getSaveFileName(void* ignored, const QString &caption = QString(), const QString &dir = QString(), const QString &filter = QString(), QString *selectedFilter = 0, QFileDialog::Options options = 0);
+    // Compatibility with QFileDialog::getExistingDirectory
+    static QString getExistingDirectory(void* ignored, const QString &caption = QString(), const QString &dir = QString(), const QString &filter = QString(), QString *selectedFilter = 0, QFileDialog::Options options = 0);
 
     Q_INVOKABLE QVariant inputDialog(const Icon icon, const QString& title, const QString& label = QString(), const QVariant& current = QVariant());
     Q_INVOKABLE QVariant customInputDialog(const Icon icon, const QString& title, const QVariantMap& config);