Add OpenXR support and related VR changes

docs/Source/Core/InputCommon/ControlReference/ControlReference.cpp

@@ -0,0 +1,108 @@
+// Copyright 2016 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "InputCommon/ControlReference/ControlReference.h"
+
+using namespace ciface::ExpressionParser;
+
+static thread_local bool tls_input_gate = true;
+
+void ControlReference::SetInputGate(bool enable)
+{
+  tls_input_gate = enable;
+}
+
+bool ControlReference::GetInputGate()
+{
+  return tls_input_gate;
+}
+
+//
+// UpdateReference
+//
+// Updates a controlreference's binded devices/controls
+// need to call this to re-bind a control reference after changing its expression
+//
+void ControlReference::UpdateReference(ciface::ExpressionParser::ControlEnvironment& env)
+{
+  if (m_parsed_expression)
+  {
+    m_parsed_expression->UpdateReferences(env);
+  }
+}
+
+int ControlReference::BoundCount() const
+{
+  if (m_parsed_expression)
+    return m_parsed_expression->CountNumControls();
+  else
+    return 0;
+}
+
+ParseStatus ControlReference::GetParseStatus() const
+{
+  return m_parse_status;
+}
+
+std::string ControlReference::GetExpression() const
+{
+  return m_expression;
+}
+
+std::optional<std::string> ControlReference::SetExpression(std::string expr)
+{
+  m_expression = std::move(expr);
+  auto parse_result = ParseExpression(m_expression);
+  m_parse_status = parse_result.status;
+  m_parsed_expression = std::move(parse_result.expr);
+  return parse_result.description;
+}
+
+ControlReference::ControlReference() = default;
+
+ControlReference::~ControlReference() = default;
+
+InputReference::InputReference() : ControlReference()
+{
+}
+
+OutputReference::OutputReference() : ControlReference()
+{
+}
+
+bool InputReference::IsInput() const
+{
+  return true;
+}
+bool OutputReference::IsInput() const
+{
+  return false;
+}
+
+//
+// InputReference :: State
+//
+// Gets the state of an input reference
+// override function for ControlReference::State ...
+//
+ControlState InputReference::State(const ControlState ignore)
+{
+  if (m_parsed_expression && GetInputGate())
+    return m_parsed_expression->GetValue() * range;
+  return 0.0;
+}
+
+//
+// OutputReference :: State
+//
+// Set the state of all binded outputs
+// overrides ControlReference::State .. combined them so I could make the GUI simple / inputs ==
+// same as outputs one list
+// I was lazy and it works so watever
+//
+ControlState OutputReference::State(const ControlState state)
+{
+  if (m_parsed_expression)
+    m_parsed_expression->SetValue(state * range);
+  return 0.0;
+}