Add option for monochrome tray icon

src/core/Config.cpp

@@ -93,7 +93,7 @@ static const QHash<Config::ConfigKey, ConfigDirective> configStrings = {
     {Config::GUI_HidePreviewPanel, {QS("GUI/HidePreviewPanel"), Roaming, false}},
     {Config::GUI_ToolButtonStyle, {QS("GUI/ToolButtonStyle"), Roaming, Qt::ToolButtonIconOnly}},
     {Config::GUI_ShowTrayIcon, {QS("GUI/ShowTrayIcon"), Roaming, false}},
-    {Config::GUI_DarkTrayIcon, {QS("GUI/DarkTrayIcon"), Roaming, false}},
+    {Config::GUI_TrayIconAppearance, {QS("GUI/TrayIconAppearance"), Roaming, {}}},
     {Config::GUI_MinimizeToTray, {QS("GUI/MinimizeToTray"), Roaming, false}},
     {Config::GUI_MinimizeOnStartup, {QS("GUI/MinimizeOnStartup"), Roaming, false}},
     {Config::GUI_MinimizeOnClose, {QS("GUI/MinimizeOnClose"), Roaming, false}},
@@ -345,7 +345,8 @@ static const QHash<QString, Config::ConfigKey> deprecationMap = {
     {QS("generator/WordCase"), Config::PasswordGenerator_WordCase},
     {QS("generator/Type"), Config::PasswordGenerator_Type},
     {QS("QtErrorMessageShown"), Config::Messages_Qt55CompatibilityWarning},
-    {QS("GUI/HidePasswords"), Config::Deleted}};
+    {QS("GUI/HidePasswords"), Config::Deleted},
+    {QS("GUI/DarkTrayIcon"), Config::Deleted}};
 
 /**
  * Migrate settings from previous versions.

src/core/Config.h

@@ -76,7 +76,7 @@ public:
         GUI_HidePreviewPanel,
         GUI_ToolButtonStyle,
         GUI_ShowTrayIcon,
-        GUI_DarkTrayIcon,
+        GUI_TrayIconAppearance,
         GUI_MinimizeToTray,
         GUI_MinimizeOnStartup,
         GUI_MinimizeOnClose,

src/core/Resources.cpp

@@ -28,6 +28,7 @@
 #include "core/Config.h"
 #include "core/Global.h"
 #include "gui/MainWindow.h"
+#include "gui/osutils/OSUtils.h"
 
 Resources* Resources::m_instance(nullptr);
 
@@ -100,19 +101,48 @@ QIcon Resources::applicationIcon()
     return icon("keepassxc", false);
 }
 
+QString Resources::getTrayIconAppearance() const
+{
+    auto iconAppearance = config()->get(Config::GUI_TrayIconAppearance).toString();
+    if (iconAppearance.isNull()) {
+#ifdef Q_OS_MACOS
+        iconAppearance = osUtils->isDarkMode() ? "monochrome-light" : "monochrome-dark";
+#else
+        iconAppearance = "monochrome-light";
+#endif
+    }
+    return iconAppearance;
+}
+
 QIcon Resources::trayIcon()
 {
-    return useDarkIcon() ? icon("keepassxc-dark", false) : icon("keepassxc", false);
+    return trayIconUnlocked();
 }
 
 QIcon Resources::trayIconLocked()
 {
+    auto iconApperance = getTrayIconAppearance();
+
+    if (iconApperance == "monochrome-light") {
+        return icon("keepassxc-monochrome-light-locked", false);
+    }
+    if (iconApperance == "monochrome-dark") {
+        return icon("keepassxc-monochrome-dark-locked", false);
+    }
     return icon("keepassxc-locked", false);
 }
 
 QIcon Resources::trayIconUnlocked()
 {
-    return useDarkIcon() ? icon("keepassxc-dark", false) : icon("keepassxc-unlocked", false);
+    auto iconApperance = getTrayIconAppearance();
+
+    if (iconApperance == "monochrome-light") {
+        return icon("keepassxc-monochrome-light", false);
+    }
+    if (iconApperance == "monochrome-dark") {
+        return icon("keepassxc-monochrome-dark", false);
+    }
+    return icon("keepassxc", false);
 }
 
 QIcon Resources::icon(const QString& name, bool recolor, const QColor& overrideColor)
@@ -223,11 +253,6 @@ bool Resources::testResourceDir(const QString& dir)
     return false;
 }
 
-bool Resources::useDarkIcon()
-{
-    return config()->get(Config::GUI_DarkTrayIcon).toBool();
-}
-
 Resources* Resources::instance()
 {
     if (!m_instance) {

src/core/Resources.h

@@ -40,9 +40,9 @@ public:
     static Resources* instance();
 
 private:
+    QString getTrayIconAppearance() const;
     Resources();
     bool testResourceDir(const QString& dir);
-    bool useDarkIcon();
 
     static Resources* m_instance;