cabana: use applicationPath for settings (#29875)

old-commit-hash: 5e1b5b36e48f3b7c776b843993071e24a9d1466e

tools/cabana/cabana.cc

@@ -18,6 +18,8 @@ int main(int argc, char *argv[]) {
   app.setWindowIcon(QIcon(":cabana-icon.png"));
 
   UnixSignalHandler signalHandler;
+
+  settings.load();
   utils::setTheme(settings.theme);
 
   QCommandLineParser cmd_parser;

tools/cabana/settings.cc

@@ -13,12 +13,8 @@
 
 Settings settings;
 
-Settings::Settings() {
-  load();
-}
-
 void Settings::save() {
-  QSettings s("settings", QSettings::IniFormat);
+  QSettings s(filePath(), QSettings::IniFormat);
   s.setValue("fps", fps);
   s.setValue("max_cached_minutes", max_cached_minutes);
   s.setValue("chart_height", chart_height);
@@ -42,7 +38,7 @@ void Settings::save() {
 }
 
 void Settings::load() {
-  QSettings s("settings", QSettings::IniFormat);
+  QSettings s(filePath(), QSettings::IniFormat);
   fps = s.value("fps", 10).toInt();
   max_cached_minutes = s.value("max_cached_minutes", 30).toInt();
   chart_height = s.value("chart_height", 200).toInt();

tools/cabana/settings.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <QApplication>
 #include <QByteArray>
 #include <QCheckBox>
 #include <QComboBox>
@@ -22,9 +23,10 @@ public:
     AlwaysBE,
   };
 
-  Settings();
+  Settings() {}
   void save();
   void load();
+  inline static QString filePath() { return QApplication::applicationDirPath() + "/settings"; }
 
   int fps = 10;
   int max_cached_minutes = 30;