Implement IPlugFrame::resizeView()

The base IPlugFrame only contains this single function.

src/common/logging/vst3.cpp

@@ -348,7 +348,7 @@ bool Vst3Logger::log_request(bool is_host_vst,
 }
 
 bool Vst3Logger::log_request(bool is_host_vst,
-                             const YaPluginFactory::SetHostContext& request) {
+                             const YaPluginFactory::SetHostContext&) {
     return log_request_base(is_host_vst, [&](auto& message) {
         message << "IPluginFactory3::setHostContext(<FUnknown*>)";
     });
@@ -612,6 +612,18 @@ bool Vst3Logger::log_request(bool is_host_vst,
     });
 }
 
+bool Vst3Logger::log_request(bool is_host_vst,
+                             const YaPlugFrame::ResizeView& request) {
+    return log_request_base(is_host_vst, [&](auto& message) {
+        message << request.owner_instance_id
+                << ": IPlugFrame::resizeView(view = <IPlugView*>, newSize = "
+                   "<ViewRect* with left = "
+                << request.new_size.left << ", top = " << request.new_size.top
+                << ", right = " << request.new_size.right
+                << ", bottom = " << request.new_size.bottom << ">)";
+    });
+}
+
 void Vst3Logger::log_response(bool is_host_vst, const Ack&) {
     log_response_base(is_host_vst, [&](auto& message) { message << "ACK"; });
 }

src/common/logging/vst3.h

@@ -132,6 +132,7 @@ class Vst3Logger {
     bool log_request(bool is_host_vst,
                      const YaComponentHandler::RestartComponent&);
     bool log_request(bool is_host_vst, const YaHostApplication::GetName&);
+    bool log_request(bool is_host_vst, const YaPlugFrame::ResizeView&);
 
     void log_response(bool is_host_vst, const Ack&);
     void log_response(

src/common/serialization/vst3.h

@@ -140,7 +140,8 @@ using CallbackRequest = std::variant<WantsConfiguration,
                                      YaComponentHandler::PerformEdit,
                                      YaComponentHandler::EndEdit,
                                      YaComponentHandler::RestartComponent,
-                                     YaHostApplication::GetName>;
+                                     YaHostApplication::GetName,
+                                     YaPlugFrame::ResizeView>;
 
 template <typename S>
 void serialize(S& s, CallbackRequest& payload) {

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

@@ -61,6 +61,28 @@ class YaPlugFrame : public Steinberg::IPlugFrame {
 
     inline bool supported() const { return arguments.supported; }
 
+    /**
+     * Message to pass through a call to `IPlugFrame::resizeView` to the
+     * `IPlugView` object provided by the host.
+     *
+     * XXX: Since we don't support multiple `IPlugView`s right now (as it's not
+     *      used the SDK's current version), we'll just assume that `view` is
+     *      the view stored in `Vst3PluginProxyImpl::plug_view`
+     */
+    struct ResizeView {
+        using Response = UniversalTResult;
+
+        native_size_t owner_instance_id;
+
+        Steinberg::ViewRect new_size;
+
+        template <typename S>
+        void serialize(S& s) {
+            s.value8b(owner_instance_id);
+            s.object(new_size);
+        }
+    };
+
     virtual tresult PLUGIN_API
     resizeView(Steinberg::IPlugView* view,
                Steinberg::ViewRect* newSize) override = 0;