Change quit tip based on whether gamepads are attached

app/gui/StreamSegue.qml

@@ -3,6 +3,7 @@ import QtQuick.Controls 2.2
 import QtQuick.Dialogs 1.2
 import QtQuick.Window 2.2
 
+import SdlGamepadKeyNavigation 1.0
 import Session 1.0
 
 Item {
@@ -58,11 +59,26 @@ Item {
         toast.visible = true
     }
 
+    // It's important that we don't call enable() here
+    // or it may interfere with the Session instance
+    // getting notified of initial connected gamepads.
+    SdlGamepadKeyNavigation {
+        id: gamepadKeyNav
+    }
+
     onVisibleChanged: {
         if (visible) {
             // Hide the toolbar before we start loading
             toolBar.visible = false
 
+            // Set the hint text. We do this here rather than
+            // in the hintText control itself to synchronize
+            // with Session.exec() which requires no concurrent
+            // gamepad usage.
+            hintText.text = gamepadKeyNav.getConnectedGamepads() > 0 ?
+                      "Tip: Press Start+Select+L1+R1 to disconnect your session" :
+                      "Tip: Press Ctrl+Alt+Shift+Q to disconnect your session"
+
             // Hook up our signals
             session.stageStarting.connect(stageStarting)
             session.stageFailed.connect(stageFailed)
@@ -118,7 +134,7 @@ Item {
     }
 
     Label {
-        text: "Tip: Press Ctrl+Alt+Shift+Q to disconnect your session"
+        id: hintText
         anchors.bottom: parent.bottom
         anchors.bottomMargin: 50
         anchors.horizontalCenter: parent.horizontalCenter

app/gui/sdlgamepadkeynavigation.cpp

@@ -244,3 +244,23 @@ void SdlGamepadKeyNavigation::setSettingsMode(bool settingsMode)
 {
     m_SettingsMode = settingsMode;
 }
+
+int SdlGamepadKeyNavigation::getConnectedGamepads()
+{
+    if (SDL_InitSubSystem(SDL_INIT_GAMECONTROLLER) != 0) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+                     "SDL_InitSubSystem(SDL_INIT_GAMECONTROLLER) failed: %s",
+                     SDL_GetError());
+        return 0;
+    }
+
+    int count = 0;
+    for (int i = 0; i < SDL_NumJoysticks(); i++) {
+        if (SDL_IsGameController(i)) {
+            count++;
+        }
+    }
+
+    SDL_QuitSubSystem(SDL_INIT_GAMECONTROLLER);
+    return count;
+}

app/gui/sdlgamepadkeynavigation.h

@@ -20,6 +20,8 @@ public:
 
     Q_INVOKABLE void setSettingsMode(bool settingsMode);
 
+    Q_INVOKABLE int getConnectedGamepads();
+
 private:
     void sendKey(QEvent::Type type, Qt::Key key, Qt::KeyboardModifiers modifiers = Qt::NoModifier);