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plugin_ui.cc

/*
    Copyright (C) 2000 Paul Davis 

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#include <climits>
#include <cerrno>
#include <cmath>
#include <string>

#include <pbd/stl_delete.h>
#include <pbd/xml++.h>
#include <pbd/failed_constructor.h>

#include <gtkmm/widget.h>
#include <gtkmm2ext/click_box.h>
#include <gtkmm2ext/fastmeter.h>
#include <gtkmm2ext/barcontroller.h>
#include <gtkmm2ext/utils.h>
#include <gtkmm2ext/doi.h>
#include <gtkmm2ext/slider_controller.h>

#include <midi++/manager.h>

#include <ardour/plugin.h>
#include <ardour/insert.h>
#include <ardour/ladspa_plugin.h>
#ifdef VST_SUPPORT
#include <ardour/vst_plugin.h>
#endif

#include <lrdf.h>

#include "ardour_ui.h"
#include "prompter.h"
#include "plugin_ui.h"
#include "utils.h"
#include "gui_thread.h"
#include "public_editor.h"
#include "keyboard.h"

#include "i18n.h"

using namespace std;
using namespace ARDOUR;
using namespace PBD;
using namespace Gtkmm2ext;
using namespace Gtk;
using namespace sigc;

PluginUIWindow::PluginUIWindow (Gtk::Window* win, boost::shared_ptr<PluginInsert> insert, bool scrollable)
      : parent (win)
{
      bool have_gui = false;
      non_gtk_gui = false;
      was_visible = false;

      if (insert->plugin()->has_editor()) {
            switch (insert->type()) {
            case ARDOUR::VST:
                  have_gui = create_vst_editor (insert);
                  break;

            case ARDOUR::AudioUnit:
                  have_gui = create_audiounit_editor (insert);
                  break;
                  
            case ARDOUR::LADSPA:
                  error << _("Eh? LADSPA plugins don't have editors!") << endmsg;
                  break;

            default:
#ifndef VST_SUPPORT
                  error << _("unknown type of editor-supplying plugin (note: no VST support in this version of ardour)")
                        << endmsg;
#else
                  error << _("unknown type of editor-supplying plugin")
                        << endmsg;
#endif
                  throw failed_constructor ();
            }

      } 

      if (!have_gui) {

            GenericPluginUI*  pu  = new GenericPluginUI (insert, scrollable);
            
            _pluginui = pu;
            add (*pu);
            
            set_wmclass (X_("ardour_plugin_editor"), "Ardour");

            signal_map_event().connect (mem_fun (*pu, &GenericPluginUI::start_updating));
            signal_unmap_event().connect (mem_fun (*pu, &GenericPluginUI::stop_updating));
      }

      // set_position (Gtk::WIN_POS_MOUSE);
      set_name ("PluginEditor");
      add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK|Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);

      signal_delete_event().connect (bind (sigc::ptr_fun (just_hide_it), reinterpret_cast<Window*> (this)), false);
      insert->GoingAway.connect (mem_fun(*this, &PluginUIWindow::plugin_going_away));

      gint h = _pluginui->get_preferred_height ();
      gint w = _pluginui->get_preferred_width ();

      if (scrollable) {
            if (h > 600) h = 600;
            if (w > 600) w = 600;

            if (w < 0) {
                  w = 450;
            }
      }

      set_default_size (w, h); 
}

PluginUIWindow::~PluginUIWindow ()
{
}

void
PluginUIWindow::set_parent (Gtk::Window* win)
{
      parent = win;
}

void
PluginUIWindow::on_map ()
{
      Window::on_map ();
      set_keep_above (true);
}

bool
PluginUIWindow::on_enter_notify_event (GdkEventCrossing *ev)
{
      Keyboard::the_keyboard().enter_window (ev, this);
      return false;
}

bool
PluginUIWindow::on_leave_notify_event (GdkEventCrossing *ev)
{
      Keyboard::the_keyboard().leave_window (ev, this);
      return false;
}

void
PluginUIWindow::on_show ()
{
      if (_pluginui) {
            _pluginui->update_presets ();
      }

      Window::on_show ();

      if (parent) {
            // set_transient_for (*parent);
      }
}

void
PluginUIWindow::on_hide ()
{
      Window::on_hide ();
}

bool
PluginUIWindow::create_vst_editor(boost::shared_ptr<PluginInsert> insert)
{
#ifndef VST_SUPPORT
      return false;
#else

      boost::shared_ptr<VSTPlugin> vp;

      if ((vp = boost::dynamic_pointer_cast<VSTPlugin> (insert->plugin())) == 0) {
            error << _("unknown type of editor-supplying plugin (note: no VST support in this version of ardour)")
                        << endmsg;
            throw failed_constructor ();
      } else {
            VSTPluginUI* vpu = new VSTPluginUI (insert, vp);
      
            _pluginui = vpu;
            add (*vpu);
            vpu->package (*this);
      }

      non_gtk_gui = true;
      return true;
#endif
}

bool
PluginUIWindow::create_audiounit_editor (boost::shared_ptr<PluginInsert> insert)
{
#if !defined(HAVE_AUDIOUNITS) || !defined(GTKOSX)
      return false;
#else
      VBox* box;
      _pluginui = create_au_gui (insert, &box);
      add (*box);
      non_gtk_gui = true;

      extern sigc::signal<void,bool> ApplicationActivationChanged;
      ApplicationActivationChanged.connect (mem_fun (*this, &PluginUIWindow::app_activated));

      return true;
#endif
}

void
PluginUIWindow::app_activated (bool yn)
{
#if defined (HAVE_AUDIOUNITS) && defined(GTKOSX)
      cerr << "APP activated ? " << yn << endl;
      if (_pluginui) {
            if (yn) {
                  if (was_visible) {
                        _pluginui->activate ();
                        present ();
                        was_visible = true;
                  }
            } else {
                  was_visible = is_visible();
                  hide ();
                  _pluginui->deactivate ();
            }
      } 
#endif
}

bool
PluginUIWindow::on_key_press_event (GdkEventKey* event)
{
      if (non_gtk_gui) {
            return false;
      }

      if (!key_press_focus_accelerator_handler (*this, event)) {
            return PublicEditor::instance().on_key_press_event(event);
      } else {
            return true;
      }
}

bool
PluginUIWindow::on_key_release_event (GdkEventKey* event)
{
      return true;
}

void
PluginUIWindow::plugin_going_away ()
{
      ENSURE_GUI_THREAD(mem_fun(*this, &PluginUIWindow::plugin_going_away));
      
      if (_pluginui) {
            _pluginui->stop_updating(0);
      }
      delete_when_idle (this);
}

PlugUIBase::PlugUIBase (boost::shared_ptr<PluginInsert> pi)
      : insert (pi),
        plugin (insert->plugin()),
        save_button(_("Add")),
        bypass_button (_("Bypass"))
{
        //preset_combo.set_use_arrows_always(true);
      set_popdown_strings (preset_combo, plugin->get_presets());
      preset_combo.set_size_request (100, -1);
      preset_combo.set_active_text ("");
      preset_combo.signal_changed().connect(mem_fun(*this, &PlugUIBase::setting_selected));

      save_button.set_name ("PluginSaveButton");
      save_button.signal_clicked().connect(mem_fun(*this, &PlugUIBase::save_plugin_setting));

      insert->active_changed.connect (mem_fun(*this, &PlugUIBase::redirect_active_changed));
      bypass_button.set_active (!pi->active());

      bypass_button.set_name ("PluginBypassButton");
      bypass_button.signal_toggled().connect (mem_fun(*this, &PlugUIBase::bypass_toggled));
}

void
PlugUIBase::redirect_active_changed (Redirect* r, void* src)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &PlugUIBase::redirect_active_changed), r, src));
      bypass_button.set_active (!r->active());
}

void
PlugUIBase::setting_selected()
{
      if (preset_combo.get_active_text().length() > 0) {
            if (!plugin->load_preset(preset_combo.get_active_text())) {
                  warning << string_compose(_("Plugin preset %1 not found"), preset_combo.get_active_text()) << endmsg;
            }
      }
}

void
PlugUIBase::save_plugin_setting ()
{
      ArdourPrompter prompter (true);
      prompter.set_prompt(_("Name of New Preset:"));
      prompter.add_button (Gtk::Stock::ADD, Gtk::RESPONSE_ACCEPT);
      prompter.set_response_sensitive (Gtk::RESPONSE_ACCEPT, false);

      prompter.show_all();

      switch (prompter.run ()) {
      case Gtk::RESPONSE_ACCEPT:

            string name;

            prompter.get_result(name);

            if (name.length()) {
                  if(plugin->save_preset(name)){
                        set_popdown_strings (preset_combo, plugin->get_presets());
                        preset_combo.set_active_text (name);
                  }
            }
            break;
      }
}

void
PlugUIBase::bypass_toggled ()
{
      bool x;

      if ((x = bypass_button.get_active()) == insert->active()) {
            insert->set_active (!x, this);
            if (insert->active()) {
                  bypass_button.set_label (_("Bypass"));
            } else {
                  bypass_button.set_label (_("Active"));
            }
      }
}

void
PlugUIBase::update_presets ()
{
      set_popdown_strings (preset_combo, plugin->get_presets());
}

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