first pass Windows implementation

windows/include/polyvox_filament/polyvox_filament_plugin_c_api.h

@@ -0,0 +1,23 @@
+#ifndef FLUTTER_PLUGIN_POLYVOX_FILAMENT_PLUGIN_C_API_H_
+#define FLUTTER_PLUGIN_POLYVOX_FILAMENT_PLUGIN_C_API_H_
+
+#include <flutter_plugin_registrar.h>
+
+#ifdef FLUTTER_PLUGIN_IMPL
+#define FLUTTER_PLUGIN_EXPORT __declspec(dllexport)
+#else
+#define FLUTTER_PLUGIN_EXPORT __declspec(dllimport)
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+FLUTTER_PLUGIN_EXPORT void PolyvoxFilamentPluginCApiRegisterWithRegistrar(
+    FlutterDesktopPluginRegistrarRef registrar);
+
+#if defined(__cplusplus)
+}  // extern "C"
+#endif
+
+#endif  // FLUTTER_PLUGIN_POLYVOX_FILAMENT_PLUGIN_C_API_H_

windows/polyvox_filament_plugin.h

@@ -0,0 +1,31 @@
+#ifndef FLUTTER_PLUGIN_POLYVOX_FILAMENT_PLUGIN_H_
+#define FLUTTER_PLUGIN_POLYVOX_FILAMENT_PLUGIN_H_
+
+#include <flutter/method_channel.h>
+#include <flutter/plugin_registrar_windows.h>
+
+#include <memory>
+
+namespace polyvox_filament {
+
+class PolyvoxFilamentPlugin : public flutter::Plugin {
+ public:
+  static void RegisterWithRegistrar(flutter::PluginRegistrarWindows *registrar);
+
+  PolyvoxFilamentPlugin();
+
+  virtual ~PolyvoxFilamentPlugin();
+
+  // Disallow copy and assign.
+  PolyvoxFilamentPlugin(const PolyvoxFilamentPlugin&) = delete;
+  PolyvoxFilamentPlugin& operator=(const PolyvoxFilamentPlugin&) = delete;
+
+  // Called when a method is called on this plugin's channel from Dart.
+  void HandleMethodCall(
+      const flutter::MethodCall<flutter::EncodableValue> &method_call,
+      std::unique_ptr<flutter::MethodResult<flutter::EncodableValue>> result);
+};
+
+}  // namespace polyvox_filament
+
+#endif  // FLUTTER_PLUGIN_POLYVOX_FILAMENT_PLUGIN_H_

windows/polyvox_filament_plugin_c_api.cpp

@@ -0,0 +1,12 @@
+#include "include/polyvox_filament/polyvox_filament_plugin_c_api.h"
+
+#include <flutter/plugin_registrar_windows.h>
+
+#include "polyvox_filament_plugin.h"
+
+void PolyvoxFilamentPluginCApiRegisterWithRegistrar(
+    FlutterDesktopPluginRegistrarRef registrar) {
+  polyvox_filament::PolyvoxFilamentPlugin::RegisterWithRegistrar(
+      flutter::PluginRegistrarManager::GetInstance()
+          ->GetRegistrar<flutter::PluginRegistrarWindows>(registrar));
+}

windows/test/polyvox_filament_plugin_test.cpp

@@ -0,0 +1,43 @@
+#include <flutter/method_call.h>
+#include <flutter/method_result_functions.h>
+#include <flutter/standard_method_codec.h>
+#include <gtest/gtest.h>
+#include <windows.h>
+
+#include <memory>
+#include <string>
+#include <variant>
+
+#include "polyvox_filament_plugin.h"
+
+namespace polyvox_filament {
+namespace test {
+
+namespace {
+
+using flutter::EncodableMap;
+using flutter::EncodableValue;
+using flutter::MethodCall;
+using flutter::MethodResultFunctions;
+
+}  // namespace
+
+TEST(PolyvoxFilamentPlugin, GetPlatformVersion) {
+  PolyvoxFilamentPlugin plugin;
+  // Save the reply value from the success callback.
+  std::string result_string;
+  plugin.HandleMethodCall(
+      MethodCall("getPlatformVersion", std::make_unique<EncodableValue>()),
+      std::make_unique<MethodResultFunctions<>>(
+          [&result_string](const EncodableValue* result) {
+            result_string = std::get<std::string>(*result);
+          },
+          nullptr, nullptr));
+
+  // Since the exact string varies by host, just ensure that it's a string
+  // with the expected format.
+  EXPECT_TRUE(result_string.rfind("Windows ", 0) == 0);
+}
+
+}  // namespace test
+}  // namespace polyvox_filament