Implement IPlugView onKey{Up,Down}

src/common/logging/vst3.cpp

@@ -273,6 +273,30 @@ bool Vst3Logger::log_request(bool is_host_vst,
     });
 }
 
+bool Vst3Logger::log_request(bool is_host_vst,
+                             const YaPlugView::OnKeyDown& request) {
+    return log_request_base(is_host_vst, [&](auto& message) {
+        // This static cast is technically not correct of course but it's
+        // UTF-16, so everything's allowed
+        message << request.owner_instance_id << ": IPlugView::onKeyDown(key = "
+                << static_cast<char>(request.key)
+                << ", keyCode = " << request.key_code
+                << ", modifiers = " << request.modifiers << ")";
+    });
+}
+
+bool Vst3Logger::log_request(bool is_host_vst,
+                             const YaPlugView::OnKeyUp& request) {
+    return log_request_base(is_host_vst, [&](auto& message) {
+        // This static cast is technically not correct of course but it's
+        // UTF-16, so everything's allowed
+        message << request.owner_instance_id << ": IPlugView::onKeyUp(key = "
+                << static_cast<char>(request.key)
+                << ", keyCode = " << request.key_code
+                << ", modifiers = " << request.modifiers << ")";
+    });
+}
+
 bool Vst3Logger::log_request(bool is_host_vst,
                              const YaPlugView::GetSize& request) {
     return log_request_base(is_host_vst, [&](auto& message) {

src/common/logging/vst3.h

@@ -92,6 +92,8 @@ class Vst3Logger {
     bool log_request(bool is_host_vst, const YaPlugView::Attached&);
     bool log_request(bool is_host_vst, const YaPlugView::Removed&);
     bool log_request(bool is_host_vst, const YaPlugView::OnWheel&);
+    bool log_request(bool is_host_vst, const YaPlugView::OnKeyDown&);
+    bool log_request(bool is_host_vst, const YaPlugView::OnKeyUp&);
     bool log_request(bool is_host_vst, const YaPlugView::GetSize&);
     bool log_request(bool is_host_vst, const YaPluginBase::Initialize&);
     bool log_request(bool is_host_vst, const YaPluginBase::Terminate&);

src/common/serialization/vst3.h

@@ -81,6 +81,8 @@ using ControlRequest = std::variant<Vst3PlugViewProxy::Destruct,
                                     YaPlugView::Attached,
                                     YaPlugView::Removed,
                                     YaPlugView::OnWheel,
+                                    YaPlugView::OnKeyDown,
+                                    YaPlugView::OnKeyUp,
                                     YaPlugView::GetSize,
                                     YaPluginBase::Initialize,
                                     YaPluginBase::Terminate,

src/common/serialization/vst3/plug-view/plug-view.h

@@ -149,9 +149,55 @@ class YaPlugView : public Steinberg::IPlugView {
     };
 
     virtual tresult PLUGIN_API onWheel(float distance) override = 0;
+
+    /**
+     * Message to pass through a call to `IPlugView::onKeyDown(key, keyCode,
+     * modifiers)` to the Wine plugin host.
+     */
+    struct OnKeyDown {
+        using Response = UniversalTResult;
+
+        native_size_t owner_instance_id;
+
+        char16 key;
+        int16 key_code;
+        int16 modifiers;
+
+        template <typename S>
+        void serialize(S& s) {
+            s.value8b(owner_instance_id);
+            s.value2b(key);
+            s.value2b(key_code);
+            s.value2b(modifiers);
+        }
+    };
+
     virtual tresult PLUGIN_API onKeyDown(char16 key,
                                          int16 keyCode,
                                          int16 modifiers) override = 0;
+
+    /**
+     * Message to pass through a call to `IPlugView::onKeyUp(key, keyCode,
+     * modifiers)` to the Wine plugin host.
+     */
+    struct OnKeyUp {
+        using Response = UniversalTResult;
+
+        native_size_t owner_instance_id;
+
+        char16 key;
+        int16 key_code;
+        int16 modifiers;
+
+        template <typename S>
+        void serialize(S& s) {
+            s.value8b(owner_instance_id);
+            s.value2b(key);
+            s.value2b(key_code);
+            s.value2b(modifiers);
+        }
+    };
+
     virtual tresult PLUGIN_API onKeyUp(char16 key,
                                        int16 keyCode,
                                        int16 modifiers) override = 0;

src/plugin/bridges/vst3-impls/plug-view-proxy.cpp

@@ -71,17 +71,21 @@ tresult PLUGIN_API Vst3PlugViewProxyImpl::onWheel(float distance) {
 tresult PLUGIN_API Vst3PlugViewProxyImpl::onKeyDown(char16 key,
                                                     int16 keyCode,
                                                     int16 modifiers) {
-    // TODO: Implement
-    bridge.logger.log("TODO: IPlugView::onKeyDown()");
-    return Steinberg::kNotImplemented;
+    return bridge.send_message(
+        YaPlugView::OnKeyDown{.owner_instance_id = owner_instance_id(),
+                              .key = key,
+                              .key_code = keyCode,
+                              .modifiers = modifiers});
 }
 
 tresult PLUGIN_API Vst3PlugViewProxyImpl::onKeyUp(char16 key,
                                                   int16 keyCode,
                                                   int16 modifiers) {
-    // TODO: Implement
-    bridge.logger.log("TODO: IPlugView::onKeyUp()");
-    return Steinberg::kNotImplemented;
+    return bridge.send_message(
+        YaPlugView::OnKeyUp{.owner_instance_id = owner_instance_id(),
+                            .key = key,
+                            .key_code = keyCode,
+                            .modifiers = modifiers});
 }
 
 tresult PLUGIN_API Vst3PlugViewProxyImpl::getSize(Steinberg::ViewRect* size) {

src/wine-host/bridges/vst3.cpp

@@ -375,6 +375,18 @@ void Vst3Bridge::run() {
                 return object_instances[request.owner_instance_id]
                     .plug_view->onWheel(request.distance);
             },
+            [&](const YaPlugView::OnKeyDown& request)
+                -> YaPlugView::OnKeyDown::Response {
+                return object_instances[request.owner_instance_id]
+                    .plug_view->onKeyDown(request.key, request.key_code,
+                                          request.modifiers);
+            },
+            [&](const YaPlugView::OnKeyUp& request)
+                -> YaPlugView::OnKeyUp::Response {
+                return object_instances[request.owner_instance_id]
+                    .plug_view->onKeyUp(request.key, request.key_code,
+                                        request.modifiers);
+            },
             [&](YaPlugView::GetSize& request) -> YaPlugView::GetSize::Response {
                 const tresult result =
                     object_instances[request.owner_instance_id]