From 9813f9f8dc5558a35360020dc6218fe7ef7769f1 Mon Sep 17 00:00:00 2001
From: Billy Laws <blaws05@gmail.com>
Date: Sat, 9 Apr 2022 12:28:47 +0100
Subject: [PATCH] Implement
 ICommonStateGetter::GetDefaultDisplayResolutionChangeEvent

---
 .../services/am/controller/ICommonStateGetter.cpp  | 14 +++++++++++++-
 .../services/am/controller/ICommonStateGetter.h    |  8 ++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/app/src/main/cpp/skyline/services/am/controller/ICommonStateGetter.cpp b/app/src/main/cpp/skyline/services/am/controller/ICommonStateGetter.cpp
index 0f5fb82f..aa74a244 100644
--- a/app/src/main/cpp/skyline/services/am/controller/ICommonStateGetter.cpp
+++ b/app/src/main/cpp/skyline/services/am/controller/ICommonStateGetter.cpp
@@ -11,7 +11,10 @@ namespace skyline::service::am {
         messageEvent->Signal();
     }
 
-    ICommonStateGetter::ICommonStateGetter(const DeviceState &state, ServiceManager &manager) : messageEvent(std::make_shared<type::KEvent>(state, false)), BaseService(state, manager) {
+    ICommonStateGetter::ICommonStateGetter(const DeviceState &state, ServiceManager &manager)
+        : BaseService(state, manager),
+          messageEvent(std::make_shared<type::KEvent>(state, false)),
+          defaultDisplayResolutionChangeEvent(std::make_shared<type::KEvent>(state, false)) {
         operationMode = static_cast<OperationMode>(state.settings->operationMode);
         Logger::Info("Switch to mode: {}", static_cast<bool>(operationMode) ? "Docked" : "Handheld");
         QueueMessage(Message::FocusStateChange);
@@ -72,6 +75,15 @@ namespace skyline::service::am {
         return {};
     }
 
+    Result ICommonStateGetter::GetDefaultDisplayResolutionChangeEvent(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
+        // TODO: Implement properly when we support listeners for settings
+        auto handle{state.process->InsertItem(defaultDisplayResolutionChangeEvent)};
+        Logger::Debug("Default Display Resolution Change Event Handle: 0x{:X}", handle);
+
+        response.copyHandles.push_back(handle);
+        return {};
+    }
+
     Result ICommonStateGetter::SetCpuBoostMode(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
         cpuBoostMode = request.Pop<CpuBoostMode>();
         switch (cpuBoostMode) {
diff --git a/app/src/main/cpp/skyline/services/am/controller/ICommonStateGetter.h b/app/src/main/cpp/skyline/services/am/controller/ICommonStateGetter.h
index f82db486..6f5912a5 100644
--- a/app/src/main/cpp/skyline/services/am/controller/ICommonStateGetter.h
+++ b/app/src/main/cpp/skyline/services/am/controller/ICommonStateGetter.h
@@ -59,6 +59,8 @@ namespace skyline::service::am {
             ENUM_CASE_PAIR(PowerSaving, "Power Saving");
         })
 
+        std::shared_ptr<type::KEvent> defaultDisplayResolutionChangeEvent; //!< Signalled when the default display resolution changes,
+
         /**
          * @brief Queues a message for the application to read via ReceiveMessage
          * @param message The message to queue
@@ -110,6 +112,11 @@ namespace skyline::service::am {
          */
         Result GetDefaultDisplayResolution(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
 
+        /**
+         * @url https://switchbrew.org/wiki/Applet_Manager_services#GetDefaultDisplayResolutionChangeEvent
+         */
+        Result GetDefaultDisplayResolutionChangeEvent(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
+
         /**
          * @brief Sets the CPU boost mode to the supplied value
          * @url https://switchbrew.org/wiki/Applet_Manager_services#SetCpuBoostMode
@@ -124,6 +131,7 @@ namespace skyline::service::am {
             SFUNC(0x9, ICommonStateGetter, GetCurrentFocusState),
             SFUNC(0x32, ICommonStateGetter, IsVrModeEnabled),
             SFUNC(0x3C, ICommonStateGetter, GetDefaultDisplayResolution),
+            SFUNC(0x3D, ICommonStateGetter, GetDefaultDisplayResolutionChangeEvent),
             SFUNC(0x42, ICommonStateGetter, SetCpuBoostMode)
         )
     };