DolphinQt: Refactor, add ConfigControl class

This reduces code duplication in the different ConfigControls. This is
helpful for the next commit, which will modify the now deduplicated
code.

Source/Core/DolphinQt/Config/ConfigControls/ConfigBool.cpp

@@ -3,31 +3,22 @@
 
 #include "DolphinQt/Config/ConfigControls/ConfigBool.h"
 
-#include <QEvent>
-#include <QFont>
-#include <QSignalBlocker>
-
-#include "Common/Config/Config.h"
-
-#include "DolphinQt/Settings.h"
-
 ConfigBool::ConfigBool(const QString& label, const Config::Info<bool>& setting, bool reverse)
-    : ToolTipCheckBox(label), m_setting(setting), m_reverse(reverse)
+    : ConfigControl(label, setting.GetLocation()), m_setting(setting), m_reverse(reverse)
 {
+  setChecked(ReadValue(setting) ^ reverse);
+
   connect(this, &QCheckBox::toggled, this, &ConfigBool::Update);
-  setChecked(Config::Get(m_setting) ^ reverse);
-
-  connect(&Settings::Instance(), &Settings::ConfigChanged, this, [this] {
-    QFont bf = font();
-    bf.setBold(Config::GetActiveLayerForConfig(m_setting) != Config::LayerType::Base);
-    setFont(bf);
-
-    const QSignalBlocker blocker(this);
-    setChecked(Config::Get(m_setting) ^ m_reverse);
-  });
 }
 
 void ConfigBool::Update()
 {
-  Config::SetBaseOrCurrent(m_setting, static_cast<bool>(isChecked() ^ m_reverse));
+  const bool value = static_cast<bool>(isChecked() ^ m_reverse);
+
+  SaveValue(m_setting, value);
+}
+
+void ConfigBool::OnConfigChanged()
+{
+  setChecked(ReadValue(m_setting) ^ m_reverse);
 }