From 15113ea56d68018262c6a74a0e681aab2f30c8a9 Mon Sep 17 00:00:00 2001
From: Paul Walker <paul@pwjw.com>
Date: Fri, 11 Oct 2024 11:21:15 -0400
Subject: [PATCH] AUv2 responds to request_resize

if you call ::gui_request_resize in the auv2 we now pass that to
the [window setFramSize:] selector.
---
 cmake/wrap_auv2.cmake                    |  1 +
 src/detail/auv2/auv2_base_classes.h      |  5 ++++-
 src/detail/auv2/auv2_shared.h            |  6 ++++--
 src/detail/auv2/auv2_shared.mm           | 19 +++++++++++++++++++
 src/detail/auv2/wrappedview.asinclude.mm |  6 +++++-
 src/wrapasauv2.cpp                       |  3 +--
 6 files changed, 34 insertions(+), 6 deletions(-)
 create mode 100644 src/detail/auv2/auv2_shared.mm

diff --git a/cmake/wrap_auv2.cmake b/cmake/wrap_auv2.cmake
index 0f6f7c2a..7fa11f65 100644
--- a/cmake/wrap_auv2.cmake
+++ b/cmake/wrap_auv2.cmake
@@ -182,6 +182,7 @@ function(target_add_auv2_wrapper)
     target_sources(${AUV2_TARGET} PRIVATE
             ${CLAP_WRAPPER_CMAKE_CURRENT_SOURCE_DIR}/src/wrapasauv2.cpp
             ${CLAP_WRAPPER_CMAKE_CURRENT_SOURCE_DIR}/src/detail/auv2/auv2_shared.h
+            ${CLAP_WRAPPER_CMAKE_CURRENT_SOURCE_DIR}/src/detail/auv2/auv2_shared.mm
             ${CLAP_WRAPPER_CMAKE_CURRENT_SOURCE_DIR}/src/detail/auv2/auv2_base_classes.h
             ${CLAP_WRAPPER_CMAKE_CURRENT_SOURCE_DIR}/src/detail/auv2/process.h
             ${CLAP_WRAPPER_CMAKE_CURRENT_SOURCE_DIR}/src/detail/auv2/process.cpp
diff --git a/src/detail/auv2/auv2_base_classes.h b/src/detail/auv2/auv2_base_classes.h
index 9b9f661d..84726ddf 100644
--- a/src/detail/auv2/auv2_base_classes.h
+++ b/src/detail/auv2/auv2_base_classes.h
@@ -244,6 +244,8 @@ class WrapAsAUV2 : public ausdk::AUBase,
  private:
   AUV2_Type _autype;
 
+  ui_connection _uiconn;
+
   bool initializeClapDesc();
 
  public:
@@ -403,7 +405,8 @@ class WrapAsAUV2 : public ausdk::AUBase,
   }
   bool gui_request_resize(uint32_t width, uint32_t height) override
   {
-    return false;
+    extern bool auv2shared_mm_request_resize(const clap_window_t*, uint32_t, uint32_t);
+    return auv2shared_mm_request_resize(_uiconn._window, width, height);
   }
   bool gui_request_show() override
   {
diff --git a/src/detail/auv2/auv2_shared.h b/src/detail/auv2/auv2_shared.h
index 248e167b..dd34fe0a 100644
--- a/src/detail/auv2/auv2_shared.h
+++ b/src/detail/auv2/auv2_shared.h
@@ -13,6 +13,7 @@
  */
 
 #include <iostream>
+#include <functional>
 #include "clap_proxy.h"
 #include <AudioToolbox/AudioUnitProperties.h>
 
@@ -24,8 +25,9 @@ namespace free_audio::auv2_wrapper
 typedef struct ui_connection
 {
   uint32_t identifier = kAudioUnitProperty_ClapWrapper_UIConnection_id;
-  Clap::Plugin* _plugin = nullptr;
-  clap_window_t* _window = nullptr;
+  Clap::Plugin *_plugin = nullptr;
+  clap_window_t *_window = nullptr;
+  std::function<void(clap_window_t *)> _registerWindow = nullptr;
 } ui_connection;
 
 }  // namespace free_audio::auv2_wrapper
diff --git a/src/detail/auv2/auv2_shared.mm b/src/detail/auv2/auv2_shared.mm
new file mode 100644
index 00000000..cee7c208
--- /dev/null
+++ b/src/detail/auv2/auv2_shared.mm
@@ -0,0 +1,19 @@
+
+#include <clap/ext/gui.h>
+#include <cstdint>
+#include <iostream>
+
+#include <Cocoa/Cocoa.h>
+
+namespace free_audio::auv2_wrapper
+{
+bool auv2shared_mm_request_resize(const clap_window_t* win, uint32_t w, uint32_t h)
+{
+  if (!win) return false;
+
+  auto* nsv = (NSView*)win;
+  [nsv setFrameSize:NSMakeSize(w, h)];
+
+  return false;
+}
+}  // namespace free_audio::auv2_wrapper
diff --git a/src/detail/auv2/wrappedview.asinclude.mm b/src/detail/auv2/wrappedview.asinclude.mm
index ecf9c185..0d98cd6e 100644
--- a/src/detail/auv2/wrappedview.asinclude.mm
+++ b/src/detail/auv2/wrappedview.asinclude.mm
@@ -86,6 +86,10 @@ - (id)initWithAUv2:(free_audio::auv2_wrapper::ui_connection *)cont preferredSize
   LOGINFO("[clap-wrapper] creating NSView");
 
   ui = *cont;
+  if (ui._registerWindow)
+  {
+    ui._registerWindow((clap_window_t *)self);
+  }
   ui._plugin->_ext._gui->create(ui._plugin->_plugin, CLAP_WINDOW_API_COCOA, false);
   auto gui = ui._plugin->_ext._gui;
 
@@ -111,7 +115,7 @@ - (id)initWithAUv2:(free_audio::auv2_wrapper::ui_connection *)cont preferredSize
   gui->set_parent(ui._plugin->_plugin, &m);
   gui->set_scale(ui._plugin->_plugin, 1.0);
 
-  if (gui->can_resize(ui._plugin->_plugin)) 
+  if (gui->can_resize(ui._plugin->_plugin))
   {
     clap_gui_resize_hints_t resize_hints;
     gui->get_resize_hints(ui._plugin->_plugin, &resize_hints);
diff --git a/src/wrapasauv2.cpp b/src/wrapasauv2.cpp
index 730960ab..4b3adf3b 100644
--- a/src/wrapasauv2.cpp
+++ b/src/wrapasauv2.cpp
@@ -627,8 +627,6 @@ OSStatus WrapAsAUV2::GetPropertyInfo(AudioUnitPropertyID inID, AudioUnitScope in
   return Base::GetPropertyInfo(inID, inScope, inElement, outDataSize, outWritable);
 }
 
-ui_connection _uiconn;
-
 OSStatus WrapAsAUV2::GetProperty(AudioUnitPropertyID inID, AudioUnitScope inScope,
                                  AudioUnitElement inElement, void* outData)
 {
@@ -673,6 +671,7 @@ OSStatus WrapAsAUV2::GetProperty(AudioUnitPropertyID inID, AudioUnitScope inScop
       case kAudioUnitProperty_ClapWrapper_UIConnection_id:
         _uiconn._plugin = _plugin.get();
         _uiconn._window = nullptr;
+        _uiconn._registerWindow = [this](auto* x) { this->_uiconn._window = x; };
         *static_cast<ui_connection*>(outData) = _uiconn;
         return noErr;