if built on OS X without live resizing features, make AU plugin windows non-user...
[ardour.git] / gtk2_ardour / au_pluginui.mm
index 43378aed3e7b6fe734e339bbdf67013116d41209..9c8980cffff1792d80a93ace9c1dc288cc15b5ca 100644 (file)
@@ -1,8 +1,9 @@
-#include <gtkmm/stock.h>
-
 #undef  Marker
 #define Marker FuckYouAppleAndYourLackOfNameSpaces
 
+#include <gtkmm/button.h>
+#include <gdk/gdkquartz.h>
+
 #include "pbd/convert.h"
 #include "pbd/error.h"
 
 
 #undef check // stupid gtk, stupid apple
 
-#include <gtkmm/button.h>
-#include <gdk/gdkquartz.h>
-
 #include <gtkmm2ext/utils.h>
+#include <gtkmm2ext/window_proxy.h>
 
 #include "au_pluginui.h"
 #include "gui_thread.h"
+#include "processor_box.h"
 
-#include "appleutility/CAAudioUnit.h"
-#include "appleutility/CAComponent.h"
+#include "CAAudioUnit.h"
+#include "CAComponent.h"
 
 #import <AudioUnit/AUCocoaUIView.h>
 #import <CoreAudioKit/AUGenericView.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 sigc;
 using namespace std;
 using namespace PBD;
 
@@ -50,6 +56,29 @@ static const gchar* _automation_mode_strings[] = {
        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
@@ -58,23 +87,28 @@ static const gchar* _automation_mode_strings[] = {
 
        if (self) {
                plugin_ui = apluginui;
-               cocoa_parent = cp;
                top_level_parent = tlp;
 
-               [[NSNotificationCenter defaultCenter] addObserver:self
-                selector:@selector(cocoaParentActivationHandler:)
-                name:NSWindowDidBecomeMainNotification
-                object:nil];
+               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:nil];
+                       [[NSNotificationCenter defaultCenter]
+                            addObserver:self
+                               selector:@selector(cocoaParentBecameKeyHandler:)
+                                   name:NSWindowDidBecomeKeyNotification
+                                 object:NULL];
+               }
        }
 
        return self;
 }
-               
+
 - (void)cocoaParentActivationHandler:(NSNotification *)notification
 {
        NSWindow* notification_window = (NSWindow *)[notification object];
@@ -85,7 +119,7 @@ static const gchar* _automation_mode_strings[] = {
                } else {
                        plugin_ui->deactivate();
                }
-       } 
+       }
 }
 
 - (void)cocoaParentBecameKeyHandler:(NSNotification *)notification
@@ -98,27 +132,65 @@ static const gchar* _automation_mode_strings[] = {
                } else {
                        plugin_ui->deactivate();
                }
-       } 
+       }
 }
 
-- (void)auViewResized:(NSNotification *)notification;
+- (void)auViewResized:(NSNotification *)notification
 {
-       (void) 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());
 
@@ -133,13 +205,21 @@ AUPluginUI::AUPluginUI (boost::shared_ptr<PluginInsert> insert)
 
        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);
@@ -157,7 +237,7 @@ AUPluginUI::AUPluginUI (boost::shared_ptr<PluginInsert> insert)
 
        set_spacing (6);
        pack_start (top_box, false, false);
-       pack_start (low_box, false, false);
+       pack_start (low_box, true, true);
 
        preset_label.show ();
        _preset_combo.show ();
@@ -167,13 +247,16 @@ AUPluginUI::AUPluginUI (boost::shared_ptr<PluginInsert> insert)
        top_box.show ();
        low_box.show ();
 
-       _activating_from_app = false;
        cocoa_parent = 0;
-       _notify = 0;
        cocoa_window = 0;
-       carbon_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 */
 
@@ -187,17 +270,33 @@ AUPluginUI::AUPluginUI (boost::shared_ptr<PluginInsert> insert)
                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();
-               [[NSNotificationCenter defaultCenter] removeObserver:_notify];
                [win removeChildWindow:cocoa_parent];
-
-       } 
+       }
 
 #ifdef WITH_CARBON
        if (carbon_window) {
@@ -207,13 +306,13 @@ AUPluginUI::~AUPluginUI ()
 #endif
 
        if (editView) {
-               CloseComponent (editView);
+               ArdourCloseComponent (editView);
        }
 
        if (au_view) {
                /* remove whatever we packed into low_box so that GTK doesn't
                   mess with it.
-               */
+                */
 
                [au_view removeFromSuperview];
        }
@@ -222,14 +321,15 @@ AUPluginUI::~AUPluginUI ()
 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
@@ -248,8 +348,11 @@ AUPluginUI::test_carbon_view_support ()
        }
 
        return ret;
+#else
+       return false;
+#endif
 }
-       
+
 bool
 AUPluginUI::test_cocoa_view_support ()
 {
@@ -258,7 +361,7 @@ AUPluginUI::test_cocoa_view_support ()
        OSStatus err = AudioUnitGetPropertyInfo(*au->get_au(),
                                                kAudioUnitProperty_CocoaUI, kAudioUnitScope_Global,
                                                0, &dataSize, &isWritable);
-       
+
        return dataSize > 0 && err == noErr;
 }
 
@@ -277,7 +380,7 @@ AUPluginUI::plugin_class_valid (Class pluginClass)
 int
 AUPluginUI::create_cocoa_view ()
 {
-       BOOL wasAbleToLoadCustomView = NO;
+       bool wasAbleToLoadCustomView = false;
        AudioUnitCocoaViewInfo* cocoaViewInfo = NULL;
        UInt32               numberOfClasses = 0;
        UInt32     dataSize;
@@ -287,7 +390,7 @@ AUPluginUI::create_cocoa_view ()
 
        OSStatus result = AudioUnitGetPropertyInfo (*au->get_au(),
                                                    kAudioUnitProperty_CocoaUI,
-                                                   kAudioUnitScope_Global, 
+                                                   kAudioUnitScope_Global,
                                                    0,
                                                    &dataSize,
                                                    &isWritable );
@@ -295,13 +398,14 @@ AUPluginUI::create_cocoa_view ()
        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,
@@ -310,12 +414,12 @@ AUPluginUI::create_cocoa_view ()
                                        &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, CocoaViewBundlePath));
+                                                                       [factoryClassName UTF8String], CocoaViewBundlePath));
 
                } else {
 
@@ -328,16 +432,14 @@ AUPluginUI::create_cocoa_view ()
                }
        }
 
-       NSRect crect = { { 0, 0 }, { 1, 1} };
-
        // [A] Show custom UI if view has it
 
        if (CocoaViewBundlePath && factoryClassName) {
-               NSBundle *viewBundle    = [NSBundle bundleWithPath:[CocoaViewBundlePath path]];
+               NSBundle *viewBundle    = [NSBundle bundleWithPath:[CocoaViewBundlePath path]];
 
                DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("tried to create bundle, result = %1\n", viewBundle));
 
-               if (viewBundle == nil) {
+               if (viewBundle == NULL) {
                        error << _("AUPluginUI: error loading AU view's bundle") << endmsg;
                        return -1;
                } else {
@@ -347,15 +449,15 @@ AUPluginUI::create_cocoa_view ()
                                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 factoryInstance = [[[factoryClass alloc] init] autorelease];
-                       if (factoryInstance == nil) {
+                       id factory = [[[factoryClass alloc] init] autorelease];
+                       if (factory == NULL) {
                                error << _("AUPluginUI: Could not create an instance of the AU view factory") << endmsg;
                                return -1;
                        }
@@ -363,20 +465,20 @@ AUPluginUI::create_cocoa_view ()
                        DEBUG_TRACE (DEBUG::AudioUnits, "got a factory instance\n");
 
                        // make a view
-                       au_view = [factoryInstance uiViewForAudioUnit:*au->get_au() withSize:crect.size];
+                       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 = YES;
+                       wasAbleToLoadCustomView = true;
                }
        }
 
@@ -386,38 +488,156 @@ AUPluginUI::create_cocoa_view ()
                                                                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:YES];
+               [(AUGenericView *)au_view setShowsExpertParameters:1];
        }
 
-       // watch for size changes of the view
+       // 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;
 
-        [[NSNotificationCenter defaultCenter] addObserver:_notify
-              selector:@selector(auViewResized:) name:NSViewBoundsDidChangeNotification
-              object:au_view];
+       resizable  = [au_view autoresizingMask];
+       std::cerr << plugin->name() << " initial frame = " << [NSStringFromRect (frame) UTF8String] << " resizable ? " << resizable << std::endl;
 
+       low_box.queue_resize ();
 
-        [[NSNotificationCenter defaultCenter] addObserver:_notify
-              selector:@selector(auViewResized:) name:NSViewFrameDidChangeNotification
-              object:au_view];
-
-       // Get the size of the new AU View's frame 
-       
-       NSRect packFrame;
-       packFrame = [au_view frame];
-       prefwidth = packFrame.size.width;
-       prefheight = packFrame.size.height;
-       low_box.set_size_request (prefwidth, prefheight);
-       
        return 0;
 }
 
+void
+AUPluginUI::update_view_size ()
+{
+       last_au_frame = [au_view frame];
+}
+
 void
 AUPluginUI::cocoa_view_resized ()
 {
-       NSRect packFrame = [au_view frame];
-       prefwidth = packFrame.size.width;
-       prefheight = packFrame.size.height;
-       low_box.set_size_request (prefwidth, prefheight);
+        /* 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
@@ -428,29 +648,29 @@ AUPluginUI::create_carbon_view ()
        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(kDocumentWindowClass, attr, &r, &carbon_window)) != noErr) {
+       if ((err = CreateNewWindow(kUtilityWindowClass, attr, &r, &carbon_window)) != noErr) {
                error << string_compose (_("AUPluginUI: cannot create carbon window (err: %1)"), err) << endmsg;
-               CloseComponent (editView);
+               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);
-               CloseComponent (editView);
+               ArdourCloseComponent (editView);
                return -1;
        }
 
@@ -461,7 +681,7 @@ AUPluginUI::create_carbon_view ()
        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);
-               CloseComponent (editView);
+               ArdourCloseComponent (editView);
                return -1;
        }
 
@@ -472,11 +692,11 @@ AUPluginUI::create_carbon_view ()
        size.x = bounds.right-bounds.left;
        size.y = bounds.bottom-bounds.top;
 
-       prefwidth = (int) (size.x + 0.5);
-       prefheight = (int) (size.y + 0.5);
+       req_width = (int) (size.x + 0.5);
+       req_height = (int) (size.y + 0.5);
 
-       SizeWindow (carbon_window, prefwidth, prefheight,  true);
-       low_box.set_size_request (prefwidth, prefheight);
+       SizeWindow (carbon_window, req_width, req_height,  true);
+       low_box.set_size_request (req_width, req_height);
 
        return 0;
 #else
@@ -511,7 +731,6 @@ AUPluginUI::activate ()
 #ifdef WITH_CARBON
        ActivateWindow (carbon_window, TRUE);
 #endif
-       // [cocoa_parent makeKeyAndOrderFront:nil];
 }
 
 void
@@ -527,20 +746,17 @@ AUPluginUI::parent_carbon_window ()
 {
 #ifdef WITH_CARBON
        NSWindow* win = get_nswindow ();
-       int x, y;
+       Rect windowStructureBoundsRect;
 
        if (!win) {
                return -1;
        }
 
-       Gtk::Container* toplevel = get_toplevel();
+       /* figure out where the cocoa parent window is in carbon-coordinate space, which
+          differs from both cocoa-coordinate space and GTK-coordinate space
+       */
 
-       if (!toplevel || !toplevel->is_toplevel()) {
-               error << _("AUPluginUI: no top level window!") << endmsg;
-               return -1;
-       }
-       
-       toplevel->get_window()->get_root_origin (x, y);
+       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.
@@ -553,7 +769,11 @@ AUPluginUI::parent_carbon_window ()
 
        int packing_extra = 6; // this is the total vertical packing in our top level window
 
-       MoveWindow (carbon_window, x, y + titlebar_height + top_box.get_height() + packing_extra, false);
+       /* 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
@@ -561,15 +781,16 @@ AUPluginUI::parent_carbon_window ()
 
        SetWindowActivationScope (carbon_window, kWindowActivationScopeNone);
 
-       _notify = [ [NotificationObject alloc] initWithPluginUI:this andCocoaParent:cocoa_parent andTopLevelParent:win ]; 
+       _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 ()
@@ -580,45 +801,75 @@ AUPluginUI::parent_cocoa_window ()
                return -1;
        }
 
-       [win setAutodisplay:YES]; // turn of GTK stuff for this window
+       //[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()) {
                error << _("AUPluginUI: no top level window!") << endmsg;
-               return -1;
        }
 
-       NSView* view = gdk_quartz_window_get_nsview (get_toplevel()->get_window()->gobj());
-       GtkRequisition a = top_box.size_request ();
-
-       /* move the au_view down so that it doesn't overlap the top_box contents */
-
-       NSPoint origin = { 0, a.height };
-
-       [au_view setFrameOrigin:origin];
-       [view addSubview:au_view]; 
+       toplevel->size_request (req);
+       toplevel->set_size_request (req.width, req.height);
+       dynamic_cast<Gtk::Window*>(toplevel)->set_resizable (false);
 
+#endif
        return 0;
 }
 
-static void
-dump_view_tree (NSView* view, int depth)
+void
+AUPluginUI::grab_focus()
 {
-       NSArray* subviews = [view subviews];
-       unsigned long cnt = [subviews count];
-
-       for (int d = 0; d < depth; d++) {
-               cerr << '\t';
-       }
-       cerr << " view @ " << view << endl;
-       
-       for (unsigned long i = 0; i < cnt; ++i) {
-               NSView* subview = [subviews objectAtIndex:i];
-               dump_view_tree (subview, depth+1);
+       if (au_view) {
+               [au_view becomeFirstResponder];
        }
 }
-
 void
 AUPluginUI::forward_key_event (GdkEventKey* ev)
 {
@@ -650,7 +901,7 @@ AUPluginUI::on_realize ()
 
        NSWindow* win = get_nswindow ();
        if (win) {
-               [win setShowsResizeIndicator:NO];
+               [win setShowsResizeIndicator:0];
        }
 }
 
@@ -665,11 +916,69 @@ AUPluginUI::lower_box_realized ()
 }
 
 bool
-AUPluginUI::on_map_event (GdkEventAny*)
+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 ()
 {
@@ -679,8 +988,14 @@ AUPluginUI::on_window_hide ()
                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
@@ -722,19 +1037,16 @@ create_au_gui (boost::shared_ptr<PluginInsert> plugin_insert, VBox** box)
        return aup;
 }
 
-bool
-AUPluginUI::on_focus_in_event (GdkEventFocus*)
+void
+AUPluginUI::start_live_resize ()
 {
-       //cerr << "au plugin focus in\n";
-       //Keyboard::magic_widget_grab_focus ();
-       return false;
+  std::cerr << "\n\n\n++++ Entering Live Resize\n";
+  in_live_resize = true;
 }
 
-bool
-AUPluginUI::on_focus_out_event (GdkEventFocus*)
+void
+AUPluginUI::end_live_resize ()
 {
-       //cerr << "au plugin focus out\n";
-       //Keyboard::magic_widget_drop_focus ();
-       return false;
+  std::cerr << "\n\n\n ----Leaving Live Resize\n";
+  in_live_resize = false;
 }
-