ardour/gtk2_ardour/au_pluginui.mm

#undef  Marker
#define Marker FuckYouAppleAndYourLackOfNameSpaces

#include <gtkmm/button.h>
#include <gdk/gdkquartz.h>

#include "pbd/convert.h"
#include "pbd/error.h"

#include "ardour/audio_unit.h"
#include "ardour/debug.h"
#include "ardour/plugin_insert.h"

#undef check // stupid gtk, stupid apple

#include <gtkmm2ext/utils.h>
#include <gtkmm2ext/window_proxy.h>

#include "au_pluginui.h"
#include "gui_thread.h"
#include "processor_box.h"

#include "CAAudioUnit.h"
#include "CAComponent.h"

#import <AudioUnit/AUCocoaUIView.h>
#import <CoreAudioKit/AUGenericView.h>

#undef Marker

#include "keyboard.h"
#include "utils.h"
#include "public_editor.h"
#include "i18n.h"

#include "gtk2ardour-config.h"

#ifdef COREAUDIO105
#define ArdourCloseComponent CloseComponent
#else
#define ArdourCloseComponent AudioComponentInstanceDispose
#endif
using namespace ARDOUR;
using namespace Gtk;
using namespace Gtkmm2ext;
using namespace std;
using namespace PBD;

vector<string> AUPluginUI::automation_mode_strings;

static const gchar* _automation_mode_strings[] = {
	X_("Manual"),
	X_("Play"),
	X_("Write"),
	X_("Touch"),
	0
};

static void
dump_view_tree (NSView* view, int depth, int maxdepth)
{
	NSArray* subviews = [view subviews];
	unsigned long cnt = [subviews count];

	for (int d = 0; d < depth; d++) {
		cerr << '\t';
	}
	NSRect frame = [view frame];
	cerr << " view @ " <<  frame.origin.x << ", " << frame.origin.y
		<< ' ' << frame.size.width << " x " << frame.size.height
		<< endl;

	if (depth >= maxdepth) {
		return;
	}
	for (unsigned long i = 0; i < cnt; ++i) {
		NSView* subview = [subviews objectAtIndex:i];
		dump_view_tree (subview, depth+1, maxdepth);
	}
}

@implementation NotificationObject

- (NotificationObject*) initWithPluginUI: (AUPluginUI*) apluginui andCocoaParent: (NSWindow*) cp andTopLevelParent: (NSWindow*) tlp
{
	self = [ super init ];

	if (self) {
		plugin_ui = apluginui;
		top_level_parent = tlp;

		if (cp) {
			cocoa_parent = cp;

			[[NSNotificationCenter defaultCenter]
			     addObserver:self
			        selector:@selector(cocoaParentActivationHandler:)
			            name:NSWindowDidBecomeMainNotification
			          object:NULL];

			[[NSNotificationCenter defaultCenter]
			     addObserver:self
			        selector:@selector(cocoaParentBecameKeyHandler:)
			            name:NSWindowDidBecomeKeyNotification
			          object:NULL];
		}
	}

	return self;
}

- (void)cocoaParentActivationHandler:(NSNotification *)notification
{
	NSWindow* notification_window = (NSWindow *)[notification object];

	if (top_level_parent == notification_window || cocoa_parent == notification_window) {
		if ([notification_window isMainWindow]) {
			plugin_ui->activate();
		} else {
			plugin_ui->deactivate();
		}
	}
}

- (void)cocoaParentBecameKeyHandler:(NSNotification *)notification
{
	NSWindow* notification_window = (NSWindow *)[notification object];

	if (top_level_parent == notification_window || cocoa_parent == notification_window) {
		if ([notification_window isKeyWindow]) {
			plugin_ui->activate();
		} else {
			plugin_ui->deactivate();
		}
	}
}

- (void)auViewResized:(NSNotification *)notification
{
	(void) notification; // stop complaints about unusued argument
	plugin_ui->cocoa_view_resized();
}

@end

@implementation LiveResizeNotificationObject

- (LiveResizeNotificationObject*) initWithPluginUI: (AUPluginUI*) apluginui
{
	self = [ super init ];
	if (self) {
		plugin_ui = apluginui;
	}

	return self;
}

- (void)windowWillStartLiveResizeHandler:(NSNotification*)notification
{
	plugin_ui->start_live_resize ();
}

- (void)windowWillEndLiveResizeHandler:(NSNotification*)notification
{
	plugin_ui->end_live_resize ();
}
@end

AUPluginUI::AUPluginUI (boost::shared_ptr<PluginInsert> insert)
	: PlugUIBase (insert)
	, automation_mode_label (_("Automation"))
	, preset_label (_("Presets"))
	, mapped (false)
	, resizable (false)
	, min_width (0)
	, min_height (0)
	, req_width (0)
	, req_height (0)
	, alo_width (0)
	, alo_height (0)
	, cocoa_window (0)
	, au_view (0)
	, in_live_resize (false)
	, plugin_requested_resize (0)
	, cocoa_parent (0)
	, _notify (0)
	, _resize_notify (0)

{
	if (automation_mode_strings.empty()) {
		automation_mode_strings = I18N (_automation_mode_strings);
	}

	set_popdown_strings (automation_mode_selector, automation_mode_strings);
	automation_mode_selector.set_active_text (automation_mode_strings.front());

	if ((au = boost::dynamic_pointer_cast<AUPlugin> (insert->plugin())) == 0) {
		error << _("unknown type of editor-supplying plugin (note: no AudioUnit support in this version of ardour)") << endmsg;
		throw failed_constructor ();
	}

	/* stuff some stuff into the top of the window */

	HBox* smaller_hbox = manage (new HBox);

	smaller_hbox->set_spacing (6);
	smaller_hbox->pack_start (preset_label, false, false, 4);
	smaller_hbox->pack_start (_preset_modified, false, false);
	smaller_hbox->pack_start (_preset_combo, false, false);
	smaller_hbox->pack_start (add_button, false, false);
#if 0
	/* Ardour does not currently allow to overwrite existing presets
	 * see save_property_list() in audio_unit.cc
	 */
	smaller_hbox->pack_start (save_button, false, false);
#endif
#if 0
	/* one day these might be useful with an AU plugin, but not yet */
	smaller_hbox->pack_start (automation_mode_label, false, false);
	smaller_hbox->pack_start (automation_mode_selector, false, false);
#endif
	smaller_hbox->pack_start (reset_button, false, false);
	smaller_hbox->pack_start (bypass_button, false, true);

	VBox* v1_box = manage (new VBox);
	VBox* v2_box = manage (new VBox);

	v1_box->pack_start (*smaller_hbox, false, true);
	v2_box->pack_start (focus_button, false, true);

	top_box.set_homogeneous (false);
	top_box.set_spacing (6);
	top_box.set_border_width (6);

	top_box.pack_end (*v2_box, false, false);
	top_box.pack_end (*v1_box, false, false);

	set_spacing (6);
	pack_start (top_box, false, false);
	pack_start (low_box, true, true);

	preset_label.show ();
	_preset_combo.show ();
	automation_mode_label.show ();
	automation_mode_selector.show ();
	bypass_button.show ();
	top_box.show ();
	low_box.show ();

	cocoa_parent = 0;
	cocoa_window = 0;

#ifdef WITH_CARBON
	_activating_from_app = false;
	_notify = 0;
	au_view = 0;
	editView = 0;
	carbon_window = 0;
#endif

	/* prefer cocoa, fall back to cocoa, but use carbon if its there */

	if (test_cocoa_view_support()) {
		create_cocoa_view ();
#ifdef WITH_CARBON
	} else if (test_carbon_view_support()) {
		create_carbon_view ();
#endif
	} else {
		create_cocoa_view ();
	}

	low_box.add_events (Gdk::VISIBILITY_NOTIFY_MASK | Gdk::EXPOSURE_MASK);

	low_box.signal_realize().connect (mem_fun (this, &AUPluginUI::lower_box_realized));
	low_box.signal_visibility_notify_event ().connect (mem_fun (this, &AUPluginUI::lower_box_visibility_notify));
	if (au_view) {
		low_box.signal_size_request ().connect (mem_fun (this, &AUPluginUI::lower_box_size_request));
		low_box.signal_size_allocate ().connect (mem_fun (this, &AUPluginUI::lower_box_size_allocate));
		low_box.signal_map ().connect (mem_fun (this, &AUPluginUI::lower_box_map));
		low_box.signal_unmap ().connect (mem_fun (this, &AUPluginUI::lower_box_unmap));
		low_box.signal_expose_event ().connect (mem_fun (this, &AUPluginUI::lower_box_expose));
	}
}

AUPluginUI::~AUPluginUI ()
{
	if (_notify) {
		[[NSNotificationCenter defaultCenter] removeObserver:_notify];
	}

	if (_resize_notify) {
		[[NSNotificationCenter defaultCenter] removeObserver:_resize_notify];
	}

	if (cocoa_parent) {
		NSWindow* win = get_nswindow();
		[win removeChildWindow:cocoa_parent];
	}

#ifdef WITH_CARBON
	if (carbon_window) {
		/* not parented, just overlaid on top of our window */
		DisposeWindow (carbon_window);
	}
#endif

	if (editView) {
		ArdourCloseComponent (editView);
	}

	if (au_view) {
		/* remove whatever we packed into low_box so that GTK doesn't
		   mess with it.
		 */

		[au_view removeFromSuperview];
	}
}

bool
AUPluginUI::test_carbon_view_support ()
{
#ifdef WITH_CARBON
	bool ret = false;

	carbon_descriptor.componentType = kAudioUnitCarbonViewComponentType;
	carbon_descriptor.componentSubType = 'gnrc';
	carbon_descriptor.componentManufacturer = 'appl';
	carbon_descriptor.componentFlags = 0;
	carbon_descriptor.componentFlagsMask = 0;

	OSStatus err;

	// ask the AU for its first editor component
	UInt32 propertySize;
	err = AudioUnitGetPropertyInfo(*au->get_au(), kAudioUnitProperty_GetUIComponentList, kAudioUnitScope_Global, 0, &propertySize, NULL);
	if (!err) {
		int nEditors = propertySize / sizeof(ComponentDescription);
		ComponentDescription *editors = new ComponentDescription[nEditors];
		err = AudioUnitGetProperty(*au->get_au(), kAudioUnitProperty_GetUIComponentList, kAudioUnitScope_Global, 0, editors, &propertySize);
		if (!err) {
			// just pick the first one for now
			carbon_descriptor = editors[0];
			ret = true;
		}
		delete[] editors;
	}

	return ret;
#else
	return false;
#endif
}

bool
AUPluginUI::test_cocoa_view_support ()
{
	UInt32 dataSize   = 0;
	Boolean isWritable = 0;
	OSStatus err = AudioUnitGetPropertyInfo(*au->get_au(),
						kAudioUnitProperty_CocoaUI, kAudioUnitScope_Global,
						0, &dataSize, &isWritable);

	return dataSize > 0 && err == noErr;
}

bool
AUPluginUI::plugin_class_valid (Class pluginClass)
{
	if([pluginClass conformsToProtocol: @protocol(AUCocoaUIBase)]) {
		if([pluginClass instancesRespondToSelector: @selector(interfaceVersion)] &&
		   [pluginClass instancesRespondToSelector: @selector(uiViewForAudioUnit:withSize:)]) {
				return true;
		}
	}
	return false;
}

int
AUPluginUI::create_cocoa_view ()
{
	bool wasAbleToLoadCustomView = false;
	AudioUnitCocoaViewInfo* cocoaViewInfo = NULL;
	UInt32               numberOfClasses = 0;
	UInt32     dataSize;
	Boolean    isWritable;
	NSString*	    factoryClassName = 0;
	NSURL*	            CocoaViewBundlePath = NULL;

	OSStatus result = AudioUnitGetPropertyInfo (*au->get_au(),
						    kAudioUnitProperty_CocoaUI,
						    kAudioUnitScope_Global,
						    0,
						    &dataSize,
						    &isWritable );

	numberOfClasses = (dataSize - sizeof(CFURLRef)) / sizeof(CFStringRef);

	// Does view have custom Cocoa UI?

	if ((result == noErr) && (numberOfClasses > 0) ) {

		DEBUG_TRACE(DEBUG::AudioUnits,
			    string_compose ( "based on %1, there are %2 cocoa UI classes\n", dataSize, numberOfClasses));

		cocoaViewInfo = (AudioUnitCocoaViewInfo *)malloc(dataSize);

		if(AudioUnitGetProperty(*au->get_au(),
					kAudioUnitProperty_CocoaUI,
					kAudioUnitScope_Global,
					0,
					cocoaViewInfo,
					&dataSize) == noErr) {

			CocoaViewBundlePath	= (NSURL *)cocoaViewInfo->mCocoaAUViewBundleLocation;

			// we only take the first view in this example.
			factoryClassName	= (NSString *)cocoaViewInfo->mCocoaAUViewClass[0];

			DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("the factory name is %1 bundle is %2\n",
									[factoryClassName UTF8String], CocoaViewBundlePath));

		} else {

			DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("No cocoaUI property cocoaViewInfo = %1\n", cocoaViewInfo));

			if (cocoaViewInfo != NULL) {
				free (cocoaViewInfo);
				cocoaViewInfo = NULL;
			}
		}
	}

	// [A] Show custom UI if view has it

	if (CocoaViewBundlePath && factoryClassName) {
		NSBundle *viewBundle	= [NSBundle bundleWithPath:[CocoaViewBundlePath path]];

		DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("tried to create bundle, result = %1\n", viewBundle));

		if (viewBundle == NULL) {
			error << _("AUPluginUI: error loading AU view's bundle") << endmsg;
			return -1;
		} else {
			Class factoryClass = [viewBundle classNamed:factoryClassName];
			DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("tried to create factory class, result = %1\n", factoryClass));
			if (!factoryClass) {
				error << _("AUPluginUI: error getting AU view's factory class from bundle") << endmsg;
				return -1;
			}

			// make sure 'factoryClass' implements the AUCocoaUIBase protocol
			if (!plugin_class_valid (factoryClass)) {
				error << _("AUPluginUI: U view's factory class does not properly implement the AUCocoaUIBase protocol") << endmsg;
				return -1;
			}
			// make a factory
			id factory = [[[factoryClass alloc] init] autorelease];
			if (factory == NULL) {
				error << _("AUPluginUI: Could not create an instance of the AU view factory") << endmsg;
				return -1;
			}

			DEBUG_TRACE (DEBUG::AudioUnits, "got a factory instance\n");

			// make a view
			au_view = [factory uiViewForAudioUnit:*au->get_au() withSize:NSZeroSize];

			DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("view created @ %1\n", au_view));

			// cleanup
			[CocoaViewBundlePath release];
			if (cocoaViewInfo) {
				UInt32 i;
				for (i = 0; i < numberOfClasses; i++)
					CFRelease(cocoaViewInfo->mCocoaAUViewClass[i]);

				free (cocoaViewInfo);
			}
			wasAbleToLoadCustomView = true;
		}
	}

	if (!wasAbleToLoadCustomView) {
		// load generic Cocoa view
		DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("Loading generic view using %1 -> %2\n", au,
								au->get_au()));
		au_view = [[AUGenericView alloc] initWithAudioUnit:*au->get_au()];
		DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("view created @ %1\n", au_view));
		[(AUGenericView *)au_view setShowsExpertParameters:1];
	}

	// Get the initial size of the new AU View's frame
	NSRect  frame = [au_view frame];
	min_width  = req_width  = frame.size.width;
	min_height = req_height = frame.size.height;

	resizable  = [au_view autoresizingMask];
	std::cerr << plugin->name() << " initial frame = " << [NSStringFromRect (frame) UTF8String] << " resizable ? " << resizable << std::endl;

	low_box.queue_resize ();

	return 0;
}

void
AUPluginUI::update_view_size ()
{
	last_au_frame = [au_view frame];
}

void
AUPluginUI::cocoa_view_resized ()
{
        /* we can get here for two reasons:

           1) the plugin window was resized by the user, a new size was
           allocated to the window, ::update_view_size() was called, and we
           explicitly/manually resized the AU NSView.

           2) the plugin decided to resize itself (probably in response to user
           action, but not in response to an actual window resize)

           We only want to proceed with a window resizing in the second case.
        */

	if (in_live_resize) {
		/* ::update_view_size() will be called at the right times and
		 * will update the view size. We don't need to anything while a
		 * live resize in underway.
		 */
		return;
	}

	if (plugin_requested_resize) {
		/* we tried to change the plugin frame from inside this method
		 * (to adjust the origin), and the plugin changed its size
		 * again. Ignore this second call.
		 */
		std::cerr << plugin->name() << " re-entrant call to cocoa_view_resized, ignored\n";
		return;
	}

	plugin_requested_resize = 1;

	ProcessorWindowProxy* wp = insert->window_proxy();
	if (wp) {
		/* Once a plugin has requested a resize of its own window, do
		 * NOT save the window. The user may save state with the plugin
		 * editor expanded to show "extra detail" - the plugin will not
		 * refill this space when the editor is first
		 * instantiated. Leaving the window in the "too big" state
		 * cannot be recovered from.
		 *
		 * The window will be sized to fit the plugin's own request. Done.
		 */
		wp->set_state_mask (WindowProxy::Position);
	}

        NSRect new_frame = [au_view frame];

	std::cerr << "Plugin " << plugin->name() << " requested update (prs now = " << plugin_requested_resize << ")\n";
	std::cerr << "\tAU NSView frame : " << [ NSStringFromRect (new_frame) UTF8String] << std::endl;
	std::cerr << "\tlast au frame : " << [ NSStringFromRect (last_au_frame) UTF8String] << std::endl;

	/* from here on, we know that we've been called because the plugin
	 * decided to change the NSView frame itself.
	 */

	/* step one: compute the change in the frame size.
	 */

	float dy = new_frame.size.height - last_au_frame.size.height;
        float dx = new_frame.size.width - last_au_frame.size.width;

        NSWindow* window = get_nswindow ();
        NSRect windowFrame= [window frame];

	/* we want the top edge of the window to remain in the same place,
	   but the Cocoa/Quartz origin is at the lower left. So, when we make
	   the window larger, we will move it down, which means shifting the
	   origin toward (x,0). This will leave the top edge in the same place.
	*/

        windowFrame.origin.y    -= dy;
        windowFrame.origin.x    -= dx;
        windowFrame.size.height += dy;
        windowFrame.size.width  += dx;

	std::cerr << "\tChange size by " << dx << " x " << dy << std::endl;

        NSUInteger old_auto_resize = [au_view autoresizingMask];

	/* Stop the AU NSView from resizing itself *again* in response to
	   us changing the window size.
	*/


        [au_view setAutoresizingMask:NSViewNotSizable];

        /* Some stupid AU Views change the origin of the original AU View when
           they are resized (I'm looking at you AUSampler). If the origin has
           been moved, move it back.
        */

        if (last_au_frame.origin.x != new_frame.origin.x ||
            last_au_frame.origin.y != new_frame.origin.y) {
                new_frame.origin = last_au_frame.origin;
		std::cerr << "Move AU NSView origin back to "
			  << new_frame.origin.x << ", " << new_frame.origin.y
			  << std::endl;
                [au_view setFrame:new_frame];
                /* also be sure to redraw the topbox because this can
                   also go wrong.
                 */
                top_box.queue_draw ();
        } else {
		std::cerr << "No need to move origin, last au origin " << [NSStringFromPoint(last_au_frame.origin) UTF8String]
			  << " == new au origin " << [NSStringFromPoint(new_frame.origin) UTF8String]
			  << std::endl;
	}

	/* this resizes the window. it will eventually trigger a new
	 * size_allocate event/callback, and we'll end up in
	 * ::update_view_size(). We want to stop that from doing anything,
	 * because we've already resized the window to fit the new new view,
	 * so there's no need to actually update the view size again.
	 */

	[window setFrame:windowFrame display:1];

        [au_view setAutoresizingMask:old_auto_resize];

	/* keep a copy of the size of the AU NSView. We didn't set - the plugin did */
	last_au_frame = new_frame;
	min_width  = req_width  = new_frame.size.width;
	min_height = req_height = new_frame.size.height;

	plugin_requested_resize = 0;
}

int
AUPluginUI::create_carbon_view ()
{
#ifdef WITH_CARBON
	OSStatus err;
	ControlRef root_control;

	Component editComponent = FindNextComponent(NULL, &carbon_descriptor);

	OpenAComponent(editComponent, &editView);
	if (!editView) {
		error << _("AU Carbon view: cannot open AU Component") << endmsg;
		return -1;
	}

	Rect r = { 100, 100, 100, 100 };
	WindowAttributes attr = WindowAttributes (kWindowStandardHandlerAttribute |
						  kWindowCompositingAttribute|
						  kWindowNoShadowAttribute|
						  kWindowNoTitleBarAttribute);

	if ((err = CreateNewWindow(kUtilityWindowClass, attr, &r, &carbon_window)) != noErr) {
		error << string_compose (_("AUPluginUI: cannot create carbon window (err: %1)"), err) << endmsg;
	        ArdourCloseComponent (editView);
		return -1;
	}

	if ((err = GetRootControl(carbon_window, &root_control)) != noErr) {
		error << string_compose (_("AUPlugin: cannot get root control of carbon window (err: %1)"), err) << endmsg;
		DisposeWindow (carbon_window);
	        ArdourCloseComponent (editView);
		return -1;
	}

	ControlRef viewPane;
	Float32Point location  = { 0.0, 0.0 };
	Float32Point size = { 0.0, 0.0 } ;

	if ((err = AudioUnitCarbonViewCreate (editView, *au->get_au(), carbon_window, root_control, &location, &size, &viewPane)) != noErr) {
		error << string_compose (_("AUPluginUI: cannot create carbon plugin view (err: %1)"), err) << endmsg;
		DisposeWindow (carbon_window);
	        ArdourCloseComponent (editView);
		return -1;
	}

	// resize window

	Rect bounds;
	GetControlBounds(viewPane, &bounds);
	size.x = bounds.right-bounds.left;
	size.y = bounds.bottom-bounds.top;

	req_width = (int) (size.x + 0.5);
	req_height = (int) (size.y + 0.5);

	SizeWindow (carbon_window, req_width, req_height,  true);
	low_box.set_size_request (req_width, req_height);

	return 0;
#else
	error << _("AU Carbon GUI is not supported.") << endmsg;
	return -1;
#endif
}

NSWindow*
AUPluginUI::get_nswindow ()
{
	Gtk::Container* toplevel = get_toplevel();

	if (!toplevel || !toplevel->is_toplevel()) {
		error << _("AUPluginUI: no top level window!") << endmsg;
		return 0;
	}

	NSWindow* true_parent = gdk_quartz_window_get_nswindow (toplevel->get_window()->gobj());

	if (!true_parent) {
		error << _("AUPluginUI: no top level window!") << endmsg;
		return 0;
	}

	return true_parent;
}

void
AUPluginUI::activate ()
{
#ifdef WITH_CARBON
	ActivateWindow (carbon_window, TRUE);
#endif
}

void
AUPluginUI::deactivate ()
{
#ifdef WITH_CARBON
	ActivateWindow (carbon_window, FALSE);
#endif
}

int
AUPluginUI::parent_carbon_window ()
{
#ifdef WITH_CARBON
	NSWindow* win = get_nswindow ();
	Rect windowStructureBoundsRect;

	if (!win) {
		return -1;
	}

	/* figure out where the cocoa parent window is in carbon-coordinate space, which
	   differs from both cocoa-coordinate space and GTK-coordinate space
	*/

	GetWindowBounds((WindowRef) [win windowRef], kWindowStructureRgn, &windowStructureBoundsRect);

	/* compute how tall the title bar is, because we have to offset the position of the carbon window
	   by that much.
	*/

	NSRect content_frame = [NSWindow contentRectForFrameRect:[win frame] styleMask:[win styleMask]];
	NSRect wm_frame = [NSWindow frameRectForContentRect:content_frame styleMask:[win styleMask]];

	int titlebar_height = wm_frame.size.height - content_frame.size.height;

	int packing_extra = 6; // this is the total vertical packing in our top level window

	/* move into position, based on parent window position */
	MoveWindow (carbon_window,
		    windowStructureBoundsRect.left,
		    windowStructureBoundsRect.top + titlebar_height + top_box.get_height() + packing_extra,
		    false);
	ShowWindow (carbon_window);

	// create the cocoa window for the carbon one and make it visible
	cocoa_parent = [[NSWindow alloc] initWithWindowRef: carbon_window];

	SetWindowActivationScope (carbon_window, kWindowActivationScopeNone);

	_notify = [ [NotificationObject alloc] initWithPluginUI:this andCocoaParent:cocoa_parent andTopLevelParent:win ];

	[win addChildWindow:cocoa_parent ordered:NSWindowAbove];
	[win setAutodisplay:1]; // turn of GTK stuff for this window

	return 0;
#else
	return -1;
#endif
}

int
AUPluginUI::parent_cocoa_window ()
{
	NSWindow* win = get_nswindow ();

	if (!win) {
		return -1;
	}

	//[win setAutodisplay:1]; // turn off GTK stuff for this window

	NSView* view = gdk_quartz_window_get_nsview (low_box.get_window()->gobj());
	[view addSubview:au_view];

	/* this moves the AU NSView down and over to provide a left-hand margin
	 * and to clear the Ardour "task bar" (with plugin preset mgmt buttons,
	 * keyboard focus control, bypass etc).
	 */

	gint xx, yy;
	gtk_widget_translate_coordinates(
			GTK_WIDGET(low_box.gobj()),
			GTK_WIDGET(low_box.get_parent()->gobj()),
			8, 6, &xx, &yy);
	[au_view setFrame:NSMakeRect(xx, yy, req_width, req_height)];

	last_au_frame = [au_view frame];
	// watch for size changes of the view
	_notify = [ [NotificationObject alloc] initWithPluginUI:this andCocoaParent:NULL andTopLevelParent:win ];

	[[NSNotificationCenter defaultCenter] addObserver:_notify
		selector:@selector(auViewResized:) name:NSViewFrameDidChangeNotification
		object:au_view];

	// catch notifications that live resizing is about to start

#if HAVE_COCOA_LIVE_RESIZING
	_resize_notify = [ [ LiveResizeNotificationObject alloc] initWithPluginUI:this ];

	[[NSNotificationCenter defaultCenter] addObserver:_resize_notify
		selector:@selector(windowWillStartLiveResizeHandler:) name:NSWindowWillStartLiveResizeNotification
		object:win];

	[[NSNotificationCenter defaultCenter] addObserver:_resize_notify
		selector:@selector(windowWillEndLiveResizeHandler:) name:NSWindowDidEndLiveResizeNotification
		object:win];
#else
	/* No way before 10.6 to identify the start of a live resize (drag
	 * resize) without subclassing NSView and overriding two of its
	 * methods. Instead of that, we make the window non-resizable, thus
	 * ending confusion about whether or not resizes are plugin or user
	 * driven (they are always plugin-driven).
	 */

	Gtk::Container* toplevel = get_toplevel();
	Requisition req;

	resizable = false;

	if (toplevel && toplevel->is_toplevel()) {
		toplevel->size_request (req);
		toplevel->set_size_request (req.width, req.height);
		dynamic_cast<Gtk::Window*>(toplevel)->set_resizable (false);
	}

#endif
	return 0;
}

void
AUPluginUI::grab_focus()
{
	if (au_view) {
		[au_view becomeFirstResponder];
	}
}
void
AUPluginUI::forward_key_event (GdkEventKey* ev)
{
	NSEvent* nsevent = gdk_quartz_event_get_nsevent ((GdkEvent*)ev);

	if (au_view && nsevent) {

		/* filter on nsevent type here because GDK massages FlagsChanged
		   messages into GDK_KEY_{PRESS,RELEASE} but Cocoa won't
		   handle a FlagsChanged message as a keyDown or keyUp
		*/

		if ([nsevent type] == NSKeyDown) {
			[[[au_view window] firstResponder] keyDown:nsevent];
		} else if ([nsevent type] == NSKeyUp) {
			[[[au_view window] firstResponder] keyUp:nsevent];
		} else if ([nsevent type] == NSFlagsChanged) {
			[[[au_view window] firstResponder] flagsChanged:nsevent];
		}
	}
}

void
AUPluginUI::on_realize ()
{
	VBox::on_realize ();

	/* our windows should not have that resize indicator */

	NSWindow* win = get_nswindow ();
	if (win) {
		[win setShowsResizeIndicator:0];
	}
}

void
AUPluginUI::lower_box_realized ()
{
	if (au_view) {
		parent_cocoa_window ();
	} else if (carbon_window) {
		parent_carbon_window ();
	}
}

bool
AUPluginUI::lower_box_visibility_notify (GdkEventVisibility* ev)
{
#ifdef WITH_CARBON
	if (carbon_window  && ev->state != GDK_VISIBILITY_UNOBSCURED) {
		ShowWindow (carbon_window);
		ActivateWindow (carbon_window, TRUE);
		return true;
	}
#endif
	return false;
}

void
AUPluginUI::lower_box_map ()
{
	mapped = true;
	[au_view setHidden:0];
	update_view_size ();
}

void
AUPluginUI::lower_box_unmap ()
{
	mapped = false;
	[au_view setHidden:1];
}

void
AUPluginUI::lower_box_size_request (GtkRequisition* requisition)
{
	requisition->width  = req_width;
	requisition->height = req_height;
}

void
AUPluginUI::lower_box_size_allocate (Gtk::Allocation& allocation)
{
	alo_width  = allocation.get_width ();
	alo_height = allocation.get_height ();
	std::cerr << "lower box size reallocated to " << alo_width << " x " << alo_height << std::endl;
	update_view_size ();
	std::cerr << "low box draw (0, 0, " << alo_width << " x " << alo_height << ")\n";
	low_box.queue_draw_area (0, 0, alo_width, alo_height);
}

gboolean
AUPluginUI::lower_box_expose (GdkEventExpose* event)
{
	std::cerr << "lower box expose: " << event->area.x << ", " << event->area.y
		  << ' '
		  << event->area.width << " x " << event->area.height
		  << " ALLOC "
		  << get_allocation().get_width() << " x " << get_allocation().get_height()
		  << std::endl;

	/* hack to keep ardour responsive
	 * some UIs (e.g Addictive Drums) completely hog the CPU
	 */
	ARDOUR::GUIIdle();

	return true;
}

void
AUPluginUI::on_window_hide ()
{
#ifdef WITH_CARBON
	if (carbon_window) {
		HideWindow (carbon_window);
		ActivateWindow (carbon_window, FALSE);
	}
#endif
	hide_all ();

#if 0
	NSArray* wins = [NSApp windows];
	for (uint32_t i = 0; i < [wins count]; i++) {
		id win = [wins objectAtIndex:i];
	}
#endif
}

bool
AUPluginUI::on_window_show (const string& /*title*/)
{
	/* this is idempotent so just call it every time we show the window */

	gtk_widget_realize (GTK_WIDGET(low_box.gobj()));

	show_all ();

#ifdef WITH_CARBON
	if (carbon_window) {
		ShowWindow (carbon_window);
		ActivateWindow (carbon_window, TRUE);
	}
#endif

	return true;
}

bool
AUPluginUI::start_updating (GdkEventAny*)
{
	return false;
}

bool
AUPluginUI::stop_updating (GdkEventAny*)
{
	return false;
}

PlugUIBase*
create_au_gui (boost::shared_ptr<PluginInsert> plugin_insert, VBox** box)
{
	AUPluginUI* aup = new AUPluginUI (plugin_insert);
	(*box) = aup;
	return aup;
}

void
AUPluginUI::start_live_resize ()
{
  std::cerr << "\n\n\n++++ Entering Live Resize\n";
  in_live_resize = true;
}

void
AUPluginUI::end_live_resize ()
{
  std::cerr << "\n\n\n ----Leaving Live Resize\n";
  in_live_resize = false;
}