Qt: Implement graphics window and controls

Source/Core/DolphinQt2/Config/Graphics/GraphicsSlider.cpp

@@ -0,0 +1,25 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "DolphinQt2/Config/Graphics/GraphicsSlider.h"
+
+#include "Core/Config/Config.h"
+
+GraphicsSlider::GraphicsSlider(int minimum, int maximum, const Config::ConfigInfo<int>& setting,
+                               int tick)
+    : QSlider(Qt::Horizontal), m_setting(setting)
+{
+  setMinimum(minimum);
+  setMaximum(maximum);
+  setTickInterval(tick);
+
+  setValue(Config::Get(setting));
+
+  connect(this, &GraphicsSlider::valueChanged, this, &GraphicsSlider::Update);
+}
+
+void GraphicsSlider::Update(int value)
+{
+  Config::SetBaseOrCurrent(m_setting, value);
+}