Align input policy startup flow and fix gamepad reconnect handling

app/streaming/input/gamepad.cpp

@@ -890,6 +890,20 @@ void SdlInputHandler::handleJoystickArrivalEvent(SDL_JoyDeviceEvent* event)
     }
 }
 
+void SdlInputHandler::handleJoystickRemovalEvent(SDL_JoyDeviceEvent* event)
+{
+    SDL_assert(event->type == SDL_JOYDEVICEREMOVED);
+
+    if (findStateForGamepad(event->which) == nullptr) {
+        return;
+    }
+
+    SDL_ControllerDeviceEvent controllerEvent = {};
+    controllerEvent.type = SDL_CONTROLLERDEVICEREMOVED;
+    controllerEvent.which = event->which;
+    handleControllerDeviceEvent(&controllerEvent);
+}
+
 void SdlInputHandler::rumble(unsigned short controllerNumber, unsigned short lowFreqMotor, unsigned short highFreqMotor)
 {
     // Make sure the controller number is within our supported count

app/streaming/input/input.cpp

@@ -307,6 +307,41 @@ void SdlInputHandler::raiseAllMouseButtons()
     LiSendMouseButtonEvent(BUTTON_ACTION_RELEASE, BUTTON_X2);
 }
 
+void SdlInputHandler::raiseAllGamepadInputs()
+{
+    uint16_t raisedIndexMask = 0;
+
+    for (auto &state : m_GamepadState) {
+        if (state.controller == nullptr) {
+            continue;
+        }
+
+        state.buttons = 0;
+        state.lt = 0;
+        state.rt = 0;
+        state.lsX = 0;
+        state.lsY = 0;
+        state.rsX = 0;
+        state.rsY = 0;
+        state.emulatedClickpadButtonDown = false;
+
+        if ((raisedIndexMask & (1 << state.index)) != 0) {
+            continue;
+        }
+
+        LiSendMultiControllerEvent(state.index,
+                                   m_GamepadMask,
+                                   0,
+                                   0,
+                                   0,
+                                   0,
+                                   0,
+                                   0,
+                                   0);
+        raisedIndexMask |= (1 << state.index);
+    }
+}
+
 void SdlInputHandler::notifyMouseLeave()
 {
     // SDL on Windows doesn't send the mouse button up until the mouse re-enters the window

app/streaming/input/input.h

@@ -116,6 +116,8 @@ public:
 
     void handleJoystickArrivalEvent(SDL_JoyDeviceEvent* event);
 
+    void handleJoystickRemovalEvent(SDL_JoyDeviceEvent* event);
+
     void sendText(QString& string);
 
     void rumble(uint16_t controllerNumber, uint16_t lowFreqMotor, uint16_t highFreqMotor);
@@ -136,6 +138,8 @@ public:
 
     void raiseAllMouseButtons();
 
+    void raiseAllGamepadInputs();
+
     void notifyMouseLeave();
 
     void notifyFocusLost();