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io_selector.cc

/*
    Copyright (C) 2002-2003 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 <map>
#include <vector>

#include <sigc++/bind.h>

#include <gtkmm/messagedialog.h>

#include <glibmm/thread.h>

#include <ardour/io.h>
#include <ardour/route.h>
#include <ardour/audioengine.h>
#include <ardour/port.h>
#include <ardour/insert.h>
#include <ardour/session.h>
#include <ardour/audio_diskstream.h>

#include <gtkmm2ext/doi.h>
#include <gtkmm2ext/gtk_ui.h>
#include <gtkmm2ext/utils.h>

#include "utils.h"
#include "io_selector.h"
#include "keyboard.h"
#include "gui_thread.h"

#include "i18n.h"

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

IOSelectorWindow::IOSelectorWindow (Session& sess, boost::shared_ptr<IO> ior, bool input, bool can_cancel)
      : ArdourDialog ("i/o selector"),
        _selector (sess, ior, input),
        ok_button (can_cancel ? _("OK"): _("Close")),
        cancel_button (_("Cancel")),
        rescan_button (_("Rescan"))

{
      add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
      set_name ("IOSelectorWindow");

      string title;
      if (input) {
            title = string_compose(_("%1 input"), ior->name());
      } else {
            title = string_compose(_("%1 output"), ior->name());
      }

      ok_button.set_name ("IOSelectorButton");
      cancel_button.set_name ("IOSelectorButton");
      rescan_button.set_name ("IOSelectorButton");

      button_box.set_spacing (5);
      button_box.set_border_width (5);
      button_box.set_homogeneous (true);
      button_box.pack_start (rescan_button);

      if (can_cancel) {
            button_box.pack_start (cancel_button);
      } else {
            cancel_button.hide();
      }
            
      button_box.pack_start (ok_button);

      get_vbox()->pack_start (_selector);
      get_vbox()->pack_start (button_box, false, false);

      ok_button.signal_clicked().connect (mem_fun(*this, &IOSelectorWindow::accept));
      cancel_button.signal_clicked().connect (mem_fun(*this, &IOSelectorWindow::cancel));
      rescan_button.signal_clicked().connect (mem_fun(*this, &IOSelectorWindow::rescan));

      set_title (title);
      set_position (WIN_POS_MOUSE);

      signal_delete_event().connect (bind (sigc::ptr_fun (just_hide_it), reinterpret_cast<Window *> (this)));
}

IOSelectorWindow::~IOSelectorWindow()
{
}

void
IOSelectorWindow::rescan ()
{
      _selector.redisplay ();
}

void
IOSelectorWindow::cancel ()
{
      _selector.Finished(IOSelector::Cancelled);
      hide ();
}

void
IOSelectorWindow::accept ()
{
      _selector.Finished(IOSelector::Accepted);
      hide ();
}

void
IOSelectorWindow::on_map ()
{
      _selector.redisplay ();
      Window::on_map ();
}

/*************************
  The IO Selector "widget"
 *************************/  

IOSelector::IOSelector (Session& sess, boost::shared_ptr<IO> ior, bool input)
      : session (sess),
        io (ior),
        for_input (input),
        port_frame (for_input? _("Inputs") : _("Outputs")),
        add_port_button (for_input? _("Add Input") : _("Add Output")),
        remove_port_button (for_input? _("Remove Input") : _("Remove Output")),
        clear_connections_button (_("Disconnect All"))
{
      selected_port = 0;

      notebook.set_name ("IOSelectorNotebook");
      notebook.set_size_request (-1, 125);

      clear_connections_button.set_name ("IOSelectorButton");
      add_port_button.set_name ("IOSelectorButton");
      remove_port_button.set_name ("IOSelectorButton");

      selector_frame.set_name ("IOSelectorFrame");
      port_frame.set_name ("IOSelectorFrame");

      selector_frame.set_label (_("Available connections"));
      
      selector_button_box.set_spacing (5);
      selector_button_box.set_border_width (5);

      selector_box.set_spacing (5);
      selector_box.set_border_width (5);
      selector_box.pack_start (notebook);
      selector_box.pack_start (selector_button_box, false, false);

      selector_frame.add (selector_box);

      port_box.set_spacing (5);
      port_box.set_border_width (5);

      port_display_scroller.set_name ("IOSelectorNotebook");
      port_display_scroller.set_border_width (0);
      port_display_scroller.set_size_request (-1, 170);
      port_display_scroller.add (port_box);
      port_display_scroller.set_policy (POLICY_NEVER,
                                POLICY_AUTOMATIC);

      port_button_box.set_spacing (5);
      port_button_box.set_border_width (5);

      port_button_box.pack_start (add_port_button, false, false);
      port_button_box.pack_start (remove_port_button, false, false);
      port_button_box.pack_start (clear_connections_button, false, false);

      port_and_button_box.set_border_width (5);
      port_and_button_box.pack_start (port_button_box, false, false);
      port_and_button_box.pack_start (port_display_scroller);

      port_frame.add (port_and_button_box);

      port_and_selector_box.set_spacing (5);
      port_and_selector_box.pack_start (port_frame);
      port_and_selector_box.pack_start (selector_frame);

      set_spacing (5);
      set_border_width (5);
      pack_start (port_and_selector_box);

      rescan();
      display_ports ();

      clear_connections_button.signal_clicked().connect (mem_fun(*this, &IOSelector::clear_connections));

      add_port_button.signal_clicked().connect (mem_fun(*this, &IOSelector::add_port));
      remove_port_button.signal_clicked().connect (mem_fun(*this, &IOSelector::remove_port));

      if (for_input) {
            io->input_changed.connect (mem_fun(*this, &IOSelector::ports_changed));
      } else {
            io->output_changed.connect (mem_fun(*this, &IOSelector::ports_changed));
      }

      set_button_sensitivity ();

      io->name_changed.connect (mem_fun(*this, &IOSelector::name_changed));
}

IOSelector::~IOSelector ()
{
}

void 
IOSelector::set_button_sensitivity ()
{
      if (for_input) {

            if (io->input_maximum() < 0 || io->input_maximum() > (int) io->n_inputs()) {
                  add_port_button.set_sensitive (true);
            } else {
                  add_port_button.set_sensitive (false);
            }

      } else {

            if (io->output_maximum() < 0 || io->output_maximum() > (int) io->n_outputs()) {
                  add_port_button.set_sensitive (true);
            } else {
                  add_port_button.set_sensitive (false);
            }
                  
      }

      if (for_input) {
            if (io->n_inputs() && (io->input_minimum() < 0 || io->input_minimum() < (int) io->n_inputs())) {
                  remove_port_button.set_sensitive (true);
            } else {
                  remove_port_button.set_sensitive (false);
            }
                  
      } else {
            if (io->n_outputs() && (io->output_minimum() < 0 || io->output_minimum() < (int) io->n_outputs())) {
                  remove_port_button.set_sensitive (true);
            } else {
                  remove_port_button.set_sensitive (false);
            }
      }
}


void
IOSelector::name_changed (void* src)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &IOSelector::name_changed), src));
      
      display_ports ();
}

void
IOSelector::clear_connections ()
{
      if (for_input) {
            io->disconnect_inputs (this);
      } else {
            io->disconnect_outputs (this);
      }
}

void
IOSelector::rescan ()
{
      using namespace Notebook_Helpers;

      typedef std::map<string,vector<pair<string,string> > > PortMap;
      PortMap portmap;
      const char **ports;
      PageList& pages = notebook.pages();
      gint current_page;
      vector<string> rowdata;

      page_selection_connection.disconnect ();

      current_page = notebook.get_current_page ();

      pages.clear ();

      /* get relevant current JACK ports */

      ports = session.engine().get_ports ("", JACK_DEFAULT_AUDIO_TYPE, for_input ? JackPortIsOutput : JackPortIsInput);

      if (ports == 0) {
            return;
      }

      /* find all the client names and group their ports into a list-by-client */
      
      for (int n = 0; ports[n]; ++n) {

            pair<string,vector<pair<string,string> > > newpair;
            pair<string,string> strpair;
            pair<PortMap::iterator,bool> result;

            string str = ports[n];
            string::size_type pos;
            string portname;

            pos = str.find (':');

            newpair.first = str.substr (0, pos);
            portname = str.substr (pos+1);

            result = portmap.insert (newpair);

            strpair.first = portname;
            strpair.second = str;

            result.first->second.push_back (strpair);
      }

      PortMap::iterator i;

      for (i = portmap.begin(); i != portmap.end(); ++i) {
            
            Box *client_box = manage (new VBox);
            TreeView *display = manage (new TreeView);
            RefPtr<ListStore> model = ListStore::create (port_display_columns);
            ScrolledWindow *scroller = manage (new ScrolledWindow);

            display->set_model (model);
            display->append_column (X_("notvisible"), port_display_columns.displayed_name);
            display->set_headers_visible (false);
            display->get_selection()->set_mode (SELECTION_SINGLE);
            display->set_name ("IOSelectorList");

            for (vector<pair<string,string> >::iterator s = i->second.begin(); s != i->second.end(); ++s) {
                  
                  TreeModel::Row row = *(model->append ());

                  row[port_display_columns.displayed_name] = s->first;
                  row[port_display_columns.full_name] = s->second;
            }

            display->signal_button_release_event().connect (bind (mem_fun(*this, &IOSelector::port_selection_changed), display));
            Label *tab_label = manage (new Label);

            tab_label->set_name ("IOSelectorNotebookTab");
            tab_label->set_text ((*i).first);

            scroller->add (*display);
            scroller->set_policy (POLICY_AUTOMATIC, POLICY_AUTOMATIC);

            client_box->pack_start (*scroller);

            pages.push_back (TabElem (*client_box, *tab_label));
      }

      notebook.set_current_page (current_page);
      page_selection_connection = notebook.signal_show().connect (bind (mem_fun (notebook, &Notebook::set_current_page), current_page));
      selector_box.show_all ();
}     

void
IOSelector::display_ports ()
{
      TreeView *firsttview = 0;
      TreeView *selected_port_tview = 0;
      {
            Glib::Mutex::Lock lm  (port_display_lock);
            Port *port;
            uint32_t limit;
            
            if (for_input) {
                  limit = io->n_inputs();
            } else {
                  limit = io->n_outputs();
            }
            
            for (slist<TreeView *>::iterator i = port_displays.begin(); i != port_displays.end(); ) {
                  
                  slist<TreeView *>::iterator tmp;
                  
                  tmp = i;
                  ++tmp;
                  
                  port_box.remove (**i);
                  delete *i;
                  port_displays.erase (i);
                  
                  i = tmp;
            } 
            
            for (uint32_t n = 0; n < limit; ++n) {
                  
                  TreeView* tview;
                  //ScrolledWindow *scroller;
                  string really_short_name;
                  
                  if (for_input) {
                        port = io->input (n);
                  } else {
                        port = io->output (n);
                  }
                  
                  /* we know there is '/' because we put it there */
                  
                  really_short_name = port->short_name();
                  really_short_name = really_short_name.substr (really_short_name.find ('/') + 1);

                  tview = manage (new TreeView());
                  RefPtr<ListStore> port_model = ListStore::create (port_display_columns);
                  
                  if (!firsttview) {
                        firsttview = tview;
                  }
                  
                  tview->set_model (port_model);
                  tview->append_column (really_short_name, port_display_columns.displayed_name);
                  tview->get_selection()->set_mode (SELECTION_SINGLE);
                  tview->set_data (X_("port"), port);
                  tview->set_headers_visible (true);
                  tview->set_name (X_("IOSelectorPortList"));
                  
                  port_box.pack_start (*tview);
                  port_displays.insert (port_displays.end(), tview);
                  
                  /* now fill the clist with the current connections */
                  
                  const char **connections = port->get_connections ();
                  
                  if (connections) {
                        for (uint32_t c = 0; connections[c]; ++c) {
                              TreeModel::Row row = *(port_model->append());
                              row[port_display_columns.displayed_name] = connections[c];
                              row[port_display_columns.full_name] = connections[c];
                        }
                  } 
                  
                  if (for_input) {
                        
                        if (io->input_maximum() == 1) {
                              selected_port = port;
                              selected_port_tview = tview;
                        } else {
                              if (port == selected_port) {
                                    selected_port_tview = tview;
                              }
                        }
                        
                  } else {
                        
                        if (io->output_maximum() == 1) {
                              selected_port = port;
                              selected_port_tview = tview;
                        } else {
                              if (port == selected_port) {
                                    selected_port_tview = tview;
                              }
                        }
                  }
                  
                  TreeViewColumn* col = tview->get_column (0);
                  
                  col->set_clickable (true);
                  
                  /* handle button events on the column header ... */
                  col->signal_clicked().connect (bind (mem_fun(*this, &IOSelector::select_treeview), tview));

                  /* ... and within the treeview itself */
                  tview->signal_button_release_event().connect (bind (mem_fun(*this, &IOSelector::connection_button_release), tview));
            }
            
            port_box.show_all ();
      }
      
      if (!selected_port_tview) {
            selected_port_tview = firsttview;
      }

      if (selected_port_tview) {
            select_treeview (selected_port_tview);
      }
}

bool
IOSelector::port_selection_changed (GdkEventButton *ev, TreeView* treeview)
{
      TreeModel::iterator i = treeview->get_selection()->get_selected();
      int status;

      if (!i) {
            return 0;
      }

      if (selected_port == 0) {
            return 0;
      }

      ustring other_port_name = (*i)[port_display_columns.full_name];
      
      if (for_input) {
            if ((status = io->connect_input (selected_port, other_port_name, this)) == 0) {
                  Port *p = session.engine().get_port_by_name (other_port_name);
                  p->enable_metering();
            }
      } else {
            status = io->connect_output (selected_port, other_port_name, this);
      }

      if (status == 0) {
            select_next_treeview ();
      }
      
      treeview->get_selection()->unselect_all();
      return 0;
}

void
IOSelector::ports_changed (IOChange change, void *src)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &IOSelector::ports_changed), change, src));
      
      display_ports ();
}

void
IOSelector::add_port ()
{
      /* add a new port, then hide the button if we're up to the maximum allowed */

      if (for_input) {

            try {
                  io->add_input_port ("", this);
            }

            catch (AudioEngine::PortRegistrationFailure& err) {
                  MessageDialog msg (_("There are no more JACK ports available."));
                  msg.run ();
            }

      } else {

            try {
                  io->add_output_port ("", this);
            }

            catch (AudioEngine::PortRegistrationFailure& err) {
                  MessageDialog msg (_("There are no more JACK ports available."));
                  msg.run ();
            }
      }
            
      set_button_sensitivity ();
}

void
IOSelector::remove_port ()
{
      uint32_t nports;

      // always remove last port
      
      if (for_input) {
            if ((nports = io->n_inputs()) > 0) {
                  io->remove_input_port (io->input(nports-1), this);
            }

      } else {
            if ((nports = io->n_outputs()) > 0) {
                  io->remove_output_port (io->output(nports-1), this);
            }
      }
      
      set_button_sensitivity ();
}

gint
IOSelector::connection_button_release (GdkEventButton *ev, TreeView *treeview)
{
      /* this handles button release on a port name row: i.e. a connection
         between the named port and the port represented by the treeview.
      */

      Gtk::TreeModel::iterator iter;
      TreeModel::Path path;
      TreeViewColumn* column;
      int cellx;
      int celly;

      /* only handle button1 events here */

      if (ev->button != 1) {
            return false;
      }
      
      if (!treeview->get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
            return false;
      }

      if ((iter = treeview->get_model()->get_iter (path.to_string()))) {

            /* path is valid */
            ustring connected_port_name = (*iter)[port_display_columns.full_name];
            Port *port = reinterpret_cast<Port *> (treeview->get_data (X_("port")));
            
            if (for_input) {
                  Port *p = session.engine().get_port_by_name (connected_port_name);
                  p->disable_metering();
                  io->disconnect_input (port, connected_port_name, this);
            } else {
                  io->disconnect_output (port, connected_port_name, this);
            }
      }

      return true;
}

void
IOSelector::select_next_treeview ()
{
      slist<TreeView*>::iterator next;

      if (port_displays.empty() || port_displays.size() == 1) {
            return;
      }

      for (slist<TreeView *>::iterator i = port_displays.begin(); i != port_displays.end(); ++i) {

            if ((*i)->get_name() == "IOSelectorPortListSelected") {

                  ++i;

                  if (i == port_displays.end()) {
                        select_treeview (port_displays.front());
                  } else {
                        select_treeview (*i);
                  }
                  
                  break;
            }
      }
}

void
IOSelector::select_treeview (TreeView* tview)
{
      /* Gack. TreeView's don't respond visually to a change
         in their state, so rename them to force a style
         switch.
      */

      Glib::Mutex::Lock lm  (port_display_lock);
      Port* port = reinterpret_cast<Port *> (tview->get_data (X_("port")));

      selected_port = port;

      tview->set_name ("IOSelectorPortListSelected");
      tview->queue_draw ();

      /* ugly hack to force the column header button to change as well */

      TreeViewColumn* col = tview->get_column (0);
      GtkTreeViewColumn* ccol = col->gobj();
      
      if (ccol->button) {
            gtk_widget_set_name (ccol->button, "IOSelectorPortListSelected"); 
            gtk_widget_queue_draw (ccol->button);
      }

      for (slist<TreeView*>::iterator i = port_displays.begin(); i != port_displays.end(); ++i) {
            if (*i == tview) {
                  continue;
            }
            
            col = (*i)->get_column (0);
            ccol = col->gobj();
            
            if (ccol->button) {
                  gtk_widget_set_name (ccol->button, "IOSelectorPortList");
                  gtk_widget_queue_draw (ccol->button);
            }
            
            (*i)->set_name ("IOSelectorPortList");
            (*i)->queue_draw ();
      }

      selector_box.show_all ();
}

void
IOSelector::redisplay ()
{
      display_ports ();

      if (for_input) {
            if (io->input_maximum() != 0) {
                  rescan ();
            }
      } else {
            if (io->output_maximum() != 0) {
                  rescan();
            }
      }
}

PortInsertUI::PortInsertUI (Session& sess, boost::shared_ptr<PortInsert> pi)
      : input_selector (sess, pi, true),
        output_selector (sess, pi, false)
{
      hbox.pack_start (output_selector, true, true);
      hbox.pack_start (input_selector, true, true);


      pack_start (hbox);
}

void
PortInsertUI::redisplay()
{

      input_selector.redisplay();
      output_selector.redisplay();
}

void
PortInsertUI::finished(IOSelector::Result r)
{
      input_selector.Finished (r);
      output_selector.Finished (r);
}


PortInsertWindow::PortInsertWindow (Session& sess, boost::shared_ptr<PortInsert> pi, bool can_cancel)
      : ArdourDialog ("port insert dialog"),
        _portinsertui (sess, pi),
        ok_button (can_cancel ? _("OK"): _("Close")),
        cancel_button (_("Cancel")),
        rescan_button (_("Rescan"))
{

      set_name ("IOSelectorWindow");
      string title = _("ardour: ");
      title += pi->name();
      set_title (title);
      
      ok_button.set_name ("IOSelectorButton");
      cancel_button.set_name ("IOSelectorButton");
      rescan_button.set_name ("IOSelectorButton");

      button_box.set_spacing (5);
      button_box.set_border_width (5);
      button_box.set_homogeneous (true);
      button_box.pack_start (rescan_button);
      if (can_cancel) {
            button_box.pack_start (cancel_button);
      }
      else {
            cancel_button.hide();
      }
      button_box.pack_start (ok_button);

      get_vbox()->pack_start (_portinsertui);
      get_vbox()->pack_start (button_box, false, false);

      ok_button.signal_clicked().connect (mem_fun(*this, &PortInsertWindow::accept));
      cancel_button.signal_clicked().connect (mem_fun(*this, &PortInsertWindow::cancel));
      rescan_button.signal_clicked().connect (mem_fun(*this, &PortInsertWindow::rescan));

      signal_delete_event().connect (bind (sigc::ptr_fun (just_hide_it), reinterpret_cast<Window *> (this)));     

      going_away_connection = pi->GoingAway.connect (mem_fun(*this, &PortInsertWindow::plugin_going_away));
}

void
PortInsertWindow::plugin_going_away ()
{
      ENSURE_GUI_THREAD(mem_fun(*this, &PortInsertWindow::plugin_going_away));
      going_away_connection.disconnect ();
      delete_when_idle (this);
}

void
PortInsertWindow::on_map ()
{
      _portinsertui.redisplay ();
      Window::on_map ();
}


void
PortInsertWindow::rescan ()
{
      _portinsertui.redisplay();
}

void
PortInsertWindow::cancel ()
{
      _portinsertui.finished(IOSelector::Cancelled);
      hide ();
}

void
PortInsertWindow::accept ()
{
      _portinsertui.finished(IOSelector::Accepted);
      hide ();
}

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