Initial release
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//------------------------------------------------------------------------
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// Project : VST SDK
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//
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// Category : Helpers
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// Filename : public.sdk/source/vst/auwrapper/aucocoaview.mm
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// Created by : Steinberg, 12/2007
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// Description : VST 3 -> AU Wrapper
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//
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//-----------------------------------------------------------------------------
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// This file is part of a Steinberg SDK. It is subject to the license terms
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// in the LICENSE file found in the top-level directory of this distribution
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// and at www.steinberg.net/sdklicenses.
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// No part of the SDK, including this file, may be copied, modified, propagated,
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// or distributed except according to the terms contained in the LICENSE file.
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//-----------------------------------------------------------------------------
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/// \cond ignore
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#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
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#import "aucocoaview.h"
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#import "auwrapper.h"
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#import "public.sdk/source/vst/utility/objcclassbuilder.h"
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#import "pluginterfaces/base/funknownimpl.h"
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#import "pluginterfaces/gui/iplugview.h"
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#import "pluginterfaces/vst/ivsteditcontroller.h"
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//------------------------------------------------------------------------
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@interface NSObject (SMTG_AUView)
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- (id)initWithEditController:(Steinberg::Vst::IEditController*)editController
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audioUnit:(AudioUnit)au
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preferredSize:(NSSize)size;
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@end
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//------------------------------------------------------------------------
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namespace Steinberg {
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namespace {
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//------------------------------------------------------------------------
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struct AUPlugFrame : U::Implements<U::Directly<IPlugFrame>>
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{
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AUPlugFrame (NSView* parent) : parent (parent) {}
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tresult PLUGIN_API resizeView (IPlugView* view, ViewRect* vr) override
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{
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NSRect newSize = NSMakeRect ([parent frame].origin.x, [parent frame].origin.y,
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vr->right - vr->left, vr->bottom - vr->top);
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[parent setFrame:newSize];
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return kResultTrue;
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}
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NSView* parent;
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};
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//------------------------------------------------------------------------
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struct AUView
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{
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static constexpr auto VarNamePlugView = "plugView";
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static constexpr auto VarNameEditController = "editController";
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static constexpr auto VarNameAudioUnit = "audioUnit";
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static constexpr auto VarNameDynlib = "dynlib";
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static constexpr auto VarNamePlugFrame = "plugFrame";
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static constexpr auto VarNameIsAttached = "isAttached";
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struct Instance : ObjCInstance
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{
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using PlugViewVar = std::optional<ObjCVariable<IPlugView*>>;
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using EditControllerVar = std::optional<ObjCVariable<Vst::IEditController*>>;
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using AudioUnitVar = std::optional<ObjCVariable<AudioUnit>>;
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using DynlibVar = std::optional<ObjCVariable<FObject*>>;
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using PlugFrameVar = std::optional<ObjCVariable<AUPlugFrame*>>;
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using IsAttachedVar = std::optional<ObjCVariable<BOOL>>;
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Instance (__unsafe_unretained id obj) : ObjCInstance (obj, [NSView class])
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{
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plugView = getVariable<IPlugView*> (VarNamePlugView);
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editController = getVariable<Vst::IEditController*> (VarNameEditController);
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audioUnit = getVariable<AudioUnit> (VarNamePlugView);
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dynlib = getVariable<FObject*> (VarNameDynlib);
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plugFrame = getVariable<AUPlugFrame*> (VarNamePlugFrame);
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isAttached = getVariable<BOOL> (VarNameIsAttached);
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}
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PlugViewVar plugView;
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EditControllerVar editController;
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AudioUnitVar audioUnit;
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DynlibVar dynlib;
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PlugFrameVar plugFrame;
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IsAttachedVar isAttached;
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};
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static id alloc ()
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{
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static ObjCClass gInstance;
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return [gInstance.cl alloc];
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}
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private:
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struct ObjCClass
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{
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Class cl;
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ObjCClass ()
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{
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cl = ObjCClassBuilder ()
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.init ("SMTG_AUView", [NSView class])
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.addIvar<IPlugView*> (VarNamePlugView)
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.addIvar<Vst::IEditController*> (VarNameEditController)
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.addIvar<AudioUnit> (VarNameAudioUnit)
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.addIvar<FObject*> (VarNameDynlib)
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.addIvar<AUPlugFrame*> (VarNamePlugFrame)
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.addIvar<BOOL> (VarNameIsAttached)
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.addMethod (@selector (initWithEditController:audioUnit:preferredSize:),
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initWithEditController)
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.addMethod (@selector (setFrame:), setFrame)
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.addMethod (@selector (isFlipped), isFlipped)
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.addMethod (@selector (viewDidMoveToSuperview), viewDidMoveToSuperview)
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.addMethod (@selector (dealloc), dealloc)
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.finalize ();
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}
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static id initWithEditController (id self, SEL cmd, Vst::IEditController* editController,
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AudioUnit au, NSSize size)
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{
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ObjCInstance obj (self);
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self = obj.callSuper<id (NSRect), id> (@selector (initWithFrame:),
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NSMakeRect (0, 0, size.width, size.height));
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if (self)
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{
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Instance inst (self);
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inst.editController->set (editController);
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editController->addRef ();
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inst.audioUnit->set (au);
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auto plugView = editController->createView (Vst::ViewType::kEditor);
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if (!plugView ||
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plugView->isPlatformTypeSupported (kPlatformTypeNSView) != kResultTrue)
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{
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[self dealloc];
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return nil;
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}
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inst.plugView->set (plugView);
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auto plugFrame = NEW AUPlugFrame (self);
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inst.plugFrame->set (plugFrame);
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plugView->setFrame (plugFrame);
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if (plugView->attached (self, kPlatformTypeNSView) != kResultTrue)
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{
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[self dealloc];
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return nil;
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}
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ViewRect vr;
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if (plugView->getSize (&vr) == kResultTrue)
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{
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NSRect newSize = NSMakeRect (0, 0, vr.right - vr.left, vr.bottom - vr.top);
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[self setFrame:newSize];
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}
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inst.isAttached->set (YES);
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FObject* fObject = nullptr;
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UInt32 size = sizeof (FObject*);
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if (AudioUnitGetProperty (au, 64001, kAudioUnitScope_Global, 0, &fObject, &size) ==
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noErr)
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{
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fObject->addRef ();
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inst.dynlib->set (fObject);
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}
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}
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return self;
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}
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static void setFrame (id self, SEL cmd, NSRect newSize)
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{
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Instance inst (self);
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inst.callSuper<void (NSRect)> (@selector (setFrame:), newSize);
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ViewRect viewRect (0, 0, newSize.size.width, newSize.size.height);
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if (inst.plugView->get ())
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inst.plugView->get ()->onSize (&viewRect);
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}
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static BOOL isFlipped (id self, SEL cmd) { return YES; }
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static void viewDidMoveToSuperview (id self, SEL cmd)
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{
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Instance inst (self);
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if (inst.plugView->get ())
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{
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if ([self superview])
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{
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if (!inst.isAttached->get ())
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{
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if (inst.plugView->get ()->attached (self, kPlatformTypeNSView) ==
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kResultTrue)
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{
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inst.isAttached->set (YES);
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}
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}
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}
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else
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{
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if (inst.isAttached->get ())
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{
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inst.plugView->get ()->removed ();
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inst.isAttached->set (NO);
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}
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}
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}
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}
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static void dealloc (id self, SEL cmd)
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{
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Instance inst (self);
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if (auto plugView = inst.plugView->get ())
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{
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if (inst.isAttached->get ())
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{
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plugView->setFrame (0);
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plugView->removed ();
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}
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plugView->release ();
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if (auto plugFrame = inst.plugFrame->get ())
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plugFrame->release ();
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if (auto editController = inst.editController->get ())
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{
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auto refCount = editController->addRef ();
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if (refCount == 2)
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editController->terminate ();
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editController->release ();
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editController->release ();
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inst.editController->set (nullptr);
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}
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}
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if (auto dynlib = inst.dynlib->get ())
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dynlib->release ();
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inst.callSuper<void ()> (@selector (dealloc));
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}
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};
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};
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//------------------------------------------------------------------------
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} // anonymous
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} // Steinberg
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//------------------------------------------------------------------------
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@implementation SMTG_AUCocoaUIBase_CLASS_NAME
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//------------------------------------------------------------------------
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- (unsigned)interfaceVersion
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{
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return 0;
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}
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//------------------------------------------------------------------------
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- (NSString*)description
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{
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return @"Cocoa View";
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}
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//------------------------------------------------------------------------
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- (NSView*)uiViewForAudioUnit:(AudioUnit)inAU withSize:(NSSize)inPreferredSize
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{
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using namespace Steinberg;
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Vst::IEditController* editController = 0;
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UInt32 size = sizeof (Vst::IEditController*);
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if (AudioUnitGetProperty (inAU, 64000, kAudioUnitScope_Global, 0, &editController, &size) !=
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noErr)
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return nil;
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return [[AUView::alloc () initWithEditController:editController
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audioUnit:inAU
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preferredSize:inPreferredSize] autorelease];
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}
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@end
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/// \endcond
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