open un-writable sessions without complaining, and desensitize all/most actions that...

[ardour.git] / gtk2_ardour / lv2_plugin_ui.cc

diff --git a/gtk2_ardour/lv2_plugin_ui.cc b/gtk2_ardour/lv2_plugin_ui.cc
index 2ca9166deaa08b89b2f9d077f514a93e606c29ce..26a70743860e263b2f9cb3ffe25527a87c37a2bd 100644 (file)
--- a/gtk2_ardour/lv2_plugin_ui.cc
+++ b/gtk2_ardour/lv2_plugin_ui.cc
@@ -21,6 +21,7 @@
 #include <ardour/insert.h>
 #include <ardour/lv2_plugin.h>
 
+#include "ardour_ui.h"
 #include "lv2_plugin_ui.h"
 
 using namespace Gtk;
@@ -43,14 +44,52 @@ void
 LV2PluginUI::parameter_changed (uint32_t port_index, float val)
 {
        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)
+{
+       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;
+}
+
+bool
+LV2PluginUI::start_updating(GdkEventAny* event)
+{
+       if (!_output_ports.empty()) {
+               _screen_update_connection.disconnect();
+               _screen_update_connection = ARDOUR_UI::instance()->RapidScreenUpdate.connect 
+                       (mem_fun(*this, &LV2PluginUI::output_update));
+       }
+       return false;
+}
+
+bool
+LV2PluginUI::stop_updating(GdkEventAny* event)
+{
+       if (!_output_ports.empty()) {
+               _screen_update_connection.disconnect();
+       }
+       return false;
+}
+
+void
+LV2PluginUI::output_update()
+{
+       /* 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) {
+               uint32_t index = _output_ports[i];
+               parameter_changed(index, _lv2->get_parameter(index));
+       }
+       
+}
+
 LV2PluginUI::LV2PluginUI (boost::shared_ptr<PluginInsert> pi, boost::shared_ptr<LV2Plugin> lv2p)
        : PlugUIBase (pi)
        , _lv2(lv2p)
@@ -59,18 +98,28 @@ LV2PluginUI::LV2PluginUI (boost::shared_ptr<PluginInsert> pi, boost::shared_ptr<
                        _lv2->slv2_plugin(), _lv2->slv2_ui(), LV2PluginUI::lv2_ui_write, this,
                        _lv2->features());
                        
+       uint32_t num_ports = slv2_plugin_get_num_ports(lv2p->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)) {
+                       _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);
        
-       uint32_t num_ports = slv2_plugin_get_num_ports(lv2p->slv2_plugin());
        _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 = lv2p->nth_parameter(i, ok);
+               if (ok) {
+                       _values[port] = lv2p->get_parameter(port);
+                       if (lv2p->parameter_is_control(port) && lv2p->parameter_is_input(port)) {
+                               parameter_update(port, _values[port]);
+                       }
+               }
        }
                
        _lv2->ParameterChanged.connect(mem_fun(*this, &LV2PluginUI::parameter_changed));
@@ -101,6 +150,8 @@ 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));
        return 0;
 }
 
@@ -111,3 +162,9 @@ LV2PluginUI::configure_handler (GdkEventConfigure* ev)
        return false;
 }
 
+bool
+LV2PluginUI::is_update_wanted(uint32_t index)
+{
+       /* FIXME this should check the port notification properties, which nobody sets now anyway :) */
+       return true;
+}