Tidy up region gain line drawing slightly so that it doesn't overhang its region...
[ardour.git] / gtk2_ardour / lv2_plugin_ui.cc
index 07599a85bbbfff050a31c4d4552cbc356183fbc2..7fb2c87b055b1befd6b05ad942237d2f83391fa9 100644 (file)
@@ -28,6 +28,22 @@ using namespace Gtk;
 using namespace ARDOUR;
 using namespace PBD;
 
+std::vector<struct lv2_external_ui*> g_external_uis;
+
+void close_external_ui_windows()
+{
+       struct lv2_external_ui* external_ui_ptr;
+
+       //cout << "close_external_ui_windows" << endl;
+
+       while (!g_external_uis.empty()) {
+               //cout << "pop" << endl;
+               external_ui_ptr = g_external_uis.back();
+               LV2_EXTERNAL_UI_HIDE(external_ui_ptr);
+               g_external_uis.pop_back();
+       }
+}
+
 void
 LV2PluginUI::lv2_ui_write(LV2UI_Controller controller,
              uint32_t         port_index,
@@ -35,26 +51,62 @@ LV2PluginUI::lv2_ui_write(LV2UI_Controller controller,
              uint32_t         format,
              const void*      buffer)
 {
+       //cout << "lv2_ui_write" << endl;
        LV2PluginUI* me = (LV2PluginUI*)controller;
-       if (*(float*)buffer != me->_values[port_index])
+       if (*(float*)buffer != me->_values[port_index]) {
+               //cout << "set_parameter " << port_index << ":"  << *(float*)buffer << endl;
                me->_lv2->set_parameter(port_index, *(float*)buffer);
+  }
+}
+
+void LV2PluginUI::on_external_ui_closed(LV2UI_Controller controller)
+{
+       //cout << "on_external_ui_closed" << endl;
+
+       LV2PluginUI* me = (LV2PluginUI*)controller;
+       me->_screen_update_connection.disconnect();
+       //me->insert->set_gui(0);
+
+       for (vector<struct lv2_external_ui*>::iterator it = g_external_uis.begin() ; it < g_external_uis.end(); it++) {
+               if (*it == me->_external_ui_ptr) {
+                       g_external_uis.erase(it);
+               }
+       }
+
+       //slv2_ui_instance_get_descriptor(me->_inst)->cleanup(me->_inst);
+       me->_external_ui_ptr = NULL;
 }
 
 void
 LV2PluginUI::parameter_changed (uint32_t port_index, float val)
 {
+       //cout << "parameter_changed" << endl;
        if (val != _values[port_index]) {
-               const LV2UI_Descriptor* ui_desc = slv2_ui_instance_get_descriptor(_inst);
-               LV2UI_Handle ui_handle = slv2_ui_instance_get_handle(_inst);
-               if (ui_desc->port_event)
-                       ui_desc->port_event(ui_handle, port_index, 4, 0, &val);
-               _values[port_index] = val;
+               parameter_update(port_index, val);
+       }
+}
+
+void
+LV2PluginUI::parameter_update (uint32_t port_index, float val)
+{
+       if (!_inst) {
+               return;
        }
+
+       const LV2UI_Descriptor* ui_desc = slv2_ui_instance_get_descriptor(_inst);
+       LV2UI_Handle ui_handle = slv2_ui_instance_get_handle(_inst);
+       if (ui_desc->port_event) {
+               //cout << "port_event " << port_index << ":" << val << endl;
+               ui_desc->port_event(ui_handle, port_index, 4, 0, &val);
+  }
+       _values[port_index] = val;
 }
 
 bool
 LV2PluginUI::start_updating(GdkEventAny* event)
 {
+       //cout << "start_updating" << endl;
+
        if (!_output_ports.empty()) {
                _screen_update_connection.disconnect();
                _screen_update_connection = ARDOUR_UI::instance()->RapidScreenUpdate.connect 
@@ -66,7 +118,10 @@ LV2PluginUI::start_updating(GdkEventAny* event)
 bool
 LV2PluginUI::stop_updating(GdkEventAny* event)
 {
-       if (!_output_ports.empty()) {
+       //cout << "stop_updating" << endl;
+
+       if (//!_external_ui_ptr &&
+                       !_output_ports.empty()) {
                _screen_update_connection.disconnect();
        }
        return false;
@@ -75,6 +130,11 @@ LV2PluginUI::stop_updating(GdkEventAny* event)
 void
 LV2PluginUI::output_update()
 {
+       //cout << "output_update" << endl;
+       if (_external_ui_ptr) {
+               LV2_EXTERNAL_UI_RUN(_external_ui_ptr);
+       }
+
        /* FIXME only works with control output ports (which is all we support now anyway) */
        uint32_t nports = _output_ports.size();
        for (uint32_t i = 0; i < nports; ++i) {
@@ -87,29 +147,87 @@ LV2PluginUI::output_update()
 LV2PluginUI::LV2PluginUI (boost::shared_ptr<PluginInsert> pi, boost::shared_ptr<LV2Plugin> lv2p)
        : PlugUIBase (pi)
        , _lv2(lv2p)
+       , _inst(NULL)
+       , _values(NULL)
+       , _external_ui_ptr(NULL)
 {
+       if (!_lv2->is_external_ui()) {
+               lv2ui_instantiate("gtk2gui");
+       }
+}
+
+void
+LV2PluginUI::lv2ui_instantiate(const Glib::ustring& title)
+{
+       LV2_Feature** features;
+       LV2_Feature** features_src;
+       LV2_Feature** features_dst;
+       size_t features_count;
+       bool is_external_ui;
+
+       is_external_ui = _lv2->is_external_ui();
+
+       if (is_external_ui) {
+               _external_ui_host.ui_closed = LV2PluginUI::on_external_ui_closed;
+               _external_ui_host.plugin_human_id = strdup(title.c_str());
+
+               _external_ui_feature.URI = LV2_EXTERNAL_UI_URI;
+               _external_ui_feature.data = &_external_ui_host;
+
+               features_src = features = (LV2_Feature**)_lv2->features();
+               features_count = 2;
+               while (*features++) {
+                       features_count++;
+               }
+
+               features_dst = features = (LV2_Feature**)malloc(sizeof(LV2_Feature*) * features_count);
+               features_dst[--features_count] = NULL;
+               features_dst[--features_count] = &_external_ui_feature;
+               while (features_count--) {
+                       *features++ = *features_src++;
+               }
+       } else {
+               features_dst = (LV2_Feature**)_lv2->features();
+       }
+
        _inst = slv2_ui_instantiate(
                        _lv2->slv2_plugin(), _lv2->slv2_ui(), LV2PluginUI::lv2_ui_write, this,
-                       _lv2->features());
+                       features_dst);
+
+       if (is_external_ui) {
+               free(features_dst);
+       }
                        
-       uint32_t num_ports = slv2_plugin_get_num_ports(lv2p->slv2_plugin());
+       uint32_t num_ports = slv2_plugin_get_num_ports(_lv2->slv2_plugin());
        for (uint32_t i = 0; i < num_ports; ++i) {
-               if (lv2p->parameter_is_output(i) && lv2p->parameter_is_control(i) && is_update_wanted(i)) {
+               if (_lv2->parameter_is_output(i) && _lv2->parameter_is_control(i) && is_update_wanted(i)) {
                        _output_ports.push_back(i);
                }
        }
-       
-       GtkWidget* c_widget = (GtkWidget*)slv2_ui_instance_get_widget(_inst);
-       _gui_widget = Glib::wrap(c_widget);
-       _gui_widget->show_all();
-       pack_start(*_gui_widget, true, true);
+
+       _external_ui_ptr = NULL;
+       if (_inst) {
+               if (!is_external_ui) {
+                       GtkWidget* c_widget = (GtkWidget*)slv2_ui_instance_get_widget(_inst);
+                       _gui_widget = Glib::wrap(c_widget);
+                       _gui_widget->show_all();
+                       pack_start(*_gui_widget, true, true);
+               } else {
+                       _external_ui_ptr = (struct lv2_external_ui *)slv2_ui_instance_get_widget(_inst);
+                       g_external_uis.push_back(_external_ui_ptr);
+               }
+       }
        
        _values = new float[num_ports];
        for (uint32_t i = 0; i < num_ports; ++i) {
                bool ok;
-               _values[i] = lv2p->nth_parameter(i, ok);
-               if (ok)
-                       lv2_ui_write(this, i, 4, /* FIXME: format */0, &_values[i]);
+               uint32_t port = _lv2->nth_parameter(i, ok);
+               if (ok) {
+                       _values[port] = _lv2->get_parameter(port);
+                       if (_lv2->parameter_is_control(port) && _lv2->parameter_is_input(port)) {
+                               parameter_update(port, _values[port]);
+                       }
+               }
        }
                
        _lv2->ParameterChanged.connect(mem_fun(*this, &LV2PluginUI::parameter_changed));
@@ -117,8 +235,12 @@ LV2PluginUI::LV2PluginUI (boost::shared_ptr<PluginInsert> pi, boost::shared_ptr<
 
 LV2PluginUI::~LV2PluginUI ()
 {
-       delete[] _values;
-       // plugin destructor destroys the GUI
+       //cout << "LV2PluginUI destructor called" << endl;
+
+       if (_values) {
+               delete[] _values;
+       }
+       // plugin destructor destroys the GTK GUI
 }
 
 int
@@ -138,10 +260,15 @@ LV2PluginUI::get_preferred_width ()
 int
 LV2PluginUI::package (Gtk::Window& win)
 {
-       /* forward configure events to plugin window */
-       win.signal_configure_event().connect (mem_fun (*this, &LV2PluginUI::configure_handler));
-       win.signal_map_event().connect (mem_fun (*this, &LV2PluginUI::start_updating));
-       win.signal_unmap_event().connect (mem_fun (*this, &LV2PluginUI::stop_updating));
+       //cout << "package" << endl;
+       if (_external_ui_ptr) {
+               _win_ptr = &win;
+       } else {
+               /* forward configure events to plugin window */
+               win.signal_configure_event().connect (mem_fun (*this, &LV2PluginUI::configure_handler));
+               win.signal_map_event().connect (mem_fun (*this, &LV2PluginUI::start_updating));
+               win.signal_unmap_event().connect (mem_fun (*this, &LV2PluginUI::stop_updating));
+       }
        return 0;
 }
 
@@ -158,3 +285,41 @@ LV2PluginUI::is_update_wanted(uint32_t index)
        /* FIXME this should check the port notification properties, which nobody sets now anyway :) */
        return true;
 }
+
+bool
+LV2PluginUI::on_window_show(const Glib::ustring& title)
+{
+       //cout << "on_window_show - " << title << endl; flush(cout);
+
+       if (_lv2->is_external_ui()) {
+               if (_external_ui_ptr) {
+                       LV2_EXTERNAL_UI_SHOW(_external_ui_ptr);
+                       return false;
+               }
+               lv2ui_instantiate(title);
+               if (!_external_ui_ptr) {
+                       return false;
+               }
+
+               LV2_EXTERNAL_UI_SHOW(_external_ui_ptr);
+               _screen_update_connection.disconnect();
+               _screen_update_connection = ARDOUR_UI::instance()->RapidScreenUpdate.connect 
+                       (mem_fun(*this, &LV2PluginUI::output_update));
+               return false;
+       }
+
+       return true;
+}
+
+void
+LV2PluginUI::on_window_hide()
+{
+       //cout << "on_window_hide" << endl; flush(cout);
+
+       if (_external_ui_ptr) {
+               LV2_EXTERNAL_UI_HIDE(_external_ui_ptr);
+               //slv2_ui_instance_get_descriptor(_inst)->cleanup(_inst);
+               //_external_ui_ptr = NULL;
+               //_screen_update_connection.disconnect();
+       }
+}