From 2c63b4e3870622218ce1857244912b4719181962 Mon Sep 17 00:00:00 2001
From: Dan Paulat <dpaulat@gmail.com>
Date: Thu, 11 Apr 2024 01:03:47 -0500
Subject: [PATCH] Add hotkey manager

---
 scwx-qt/scwx-qt.cmake                         |   2 +
 .../source/scwx/qt/manager/hotkey_manager.cpp | 105 ++++++++++++++++++
 .../source/scwx/qt/manager/hotkey_manager.hpp |  43 +++++++
 3 files changed, 150 insertions(+)
 create mode 100644 scwx-qt/source/scwx/qt/manager/hotkey_manager.cpp
 create mode 100644 scwx-qt/source/scwx/qt/manager/hotkey_manager.hpp

diff --git a/scwx-qt/scwx-qt.cmake b/scwx-qt/scwx-qt.cmake
index 2b612997..5f58eded 100644
--- a/scwx-qt/scwx-qt.cmake
+++ b/scwx-qt/scwx-qt.cmake
@@ -88,6 +88,7 @@ set(SRC_GL_DRAW source/scwx/qt/gl/draw/draw_item.cpp
 set(HDR_MANAGER source/scwx/qt/manager/alert_manager.hpp
                 source/scwx/qt/manager/download_manager.hpp
                 source/scwx/qt/manager/font_manager.hpp
+                source/scwx/qt/manager/hotkey_manager.hpp
                 source/scwx/qt/manager/media_manager.hpp
                 source/scwx/qt/manager/placefile_manager.hpp
                 source/scwx/qt/manager/position_manager.hpp
@@ -101,6 +102,7 @@ set(HDR_MANAGER source/scwx/qt/manager/alert_manager.hpp
 set(SRC_MANAGER source/scwx/qt/manager/alert_manager.cpp
                 source/scwx/qt/manager/download_manager.cpp
                 source/scwx/qt/manager/font_manager.cpp
+                source/scwx/qt/manager/hotkey_manager.cpp
                 source/scwx/qt/manager/media_manager.cpp
                 source/scwx/qt/manager/placefile_manager.cpp
                 source/scwx/qt/manager/position_manager.cpp
diff --git a/scwx-qt/source/scwx/qt/manager/hotkey_manager.cpp b/scwx-qt/source/scwx/qt/manager/hotkey_manager.cpp
new file mode 100644
index 00000000..e47f7b24
--- /dev/null
+++ b/scwx-qt/source/scwx/qt/manager/hotkey_manager.cpp
@@ -0,0 +1,105 @@
+#include <scwx/qt/manager/hotkey_manager.hpp>
+#include <scwx/qt/settings/hotkey_settings.hpp>
+#include <scwx/util/logger.hpp>
+
+#include <vector>
+
+#include <boost/container/flat_map.hpp>
+#include <QKeyEvent>
+#include <QKeySequence>
+
+namespace scwx
+{
+namespace qt
+{
+namespace manager
+{
+
+static const std::string logPrefix_ = "scwx::qt::manager::hotkey_manager";
+static const auto        logger_    = scwx::util::Logger::Create(logPrefix_);
+
+class HotkeyManager::Impl
+{
+public:
+   explicit Impl()
+   {
+      auto& hotkeySettings = settings::HotkeySettings::Instance();
+
+      for (auto hotkey : types::HotkeyIterator())
+      {
+         auto& hotkeyVariable = hotkeySettings.hotkey(hotkey);
+
+         UpdateHotkey(hotkey, hotkeyVariable.GetValue());
+
+         callbacks_.emplace_back(hotkeyVariable,
+                                 hotkeyVariable.RegisterValueChangedCallback(
+                                    [this, hotkey](const std::string& value)
+                                    { UpdateHotkey(hotkey, value); }));
+      }
+   }
+
+   ~Impl()
+   {
+      for (auto& callback : callbacks_)
+      {
+         callback.first.UnregisterValueChangedCallback(callback.second);
+      }
+   }
+
+   void UpdateHotkey(types::Hotkey hotkey, const std::string& value);
+
+   std::vector<
+      std::pair<settings::SettingsVariable<std::string>&, boost::uuids::uuid>>
+                                                           callbacks_ {};
+   boost::container::flat_map<types::Hotkey, QKeySequence> hotkeys_ {};
+};
+
+HotkeyManager::HotkeyManager() : p(std::make_unique<Impl>()) {}
+HotkeyManager::~HotkeyManager() = default;
+
+void HotkeyManager::Impl::UpdateHotkey(types::Hotkey      hotkey,
+                                       const std::string& value)
+{
+   hotkeys_.insert_or_assign(hotkey,
+                             QKeySequence {QString::fromStdString(value)});
+}
+
+void HotkeyManager::HandleKeyPress(QKeyEvent* ev)
+{
+   for (auto& hotkey : p->hotkeys_)
+   {
+      if (hotkey.second.count() == 1 &&
+          hotkey.second[0] == ev->keyCombination())
+      {
+         Q_EMIT HotkeyPressed(hotkey.first);
+      }
+   }
+}
+
+void HotkeyManager::HandleKeyRelease(QKeyEvent* ev)
+{
+   Q_UNUSED(ev);
+}
+
+std::shared_ptr<HotkeyManager> HotkeyManager::Instance()
+{
+   static std::weak_ptr<HotkeyManager> hotkeyManagerReference_ {};
+   static std::mutex                   instanceMutex_ {};
+
+   std::unique_lock lock(instanceMutex_);
+
+   std::shared_ptr<HotkeyManager> hotkeyManager =
+      hotkeyManagerReference_.lock();
+
+   if (hotkeyManager == nullptr)
+   {
+      hotkeyManager           = std::make_shared<HotkeyManager>();
+      hotkeyManagerReference_ = hotkeyManager;
+   }
+
+   return hotkeyManager;
+}
+
+} // namespace manager
+} // namespace qt
+} // namespace scwx
diff --git a/scwx-qt/source/scwx/qt/manager/hotkey_manager.hpp b/scwx-qt/source/scwx/qt/manager/hotkey_manager.hpp
new file mode 100644
index 00000000..49f7576d
--- /dev/null
+++ b/scwx-qt/source/scwx/qt/manager/hotkey_manager.hpp
@@ -0,0 +1,43 @@
+#pragma once
+
+#include <scwx/qt/types/hotkey_types.hpp>
+
+#include <memory>
+
+#include <QObject>
+
+class QKeyEvent;
+
+namespace scwx
+{
+namespace qt
+{
+namespace manager
+{
+
+class HotkeyManager : public QObject
+{
+   Q_OBJECT
+   Q_DISABLE_COPY_MOVE(HotkeyManager)
+
+public:
+   explicit HotkeyManager();
+   ~HotkeyManager();
+
+   void HandleKeyPress(QKeyEvent* event);
+   void HandleKeyRelease(QKeyEvent* event);
+
+   static std::shared_ptr<HotkeyManager> Instance();
+
+signals:
+   void HotkeyPressed(scwx::qt::types::Hotkey hotkey);
+   void HotkeyReleased(scwx::qt::types::Hotkey hotkey);
+
+private:
+   class Impl;
+   std::unique_ptr<Impl> p;
+};
+
+} // namespace manager
+} // namespace qt
+} // namespace scwx