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visual_time_axis.cc

/*
    Copyright (C) 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.

    $Id: visual_time_axis.cc,v 1.14 2005/04/19 17:12:37 pauld Exp $
*/

#include <cstdlib>
#include <cmath>
#include <algorithm>
#include <string>
#include <vector>

#include <pbd/error.h>
#include <pbd/stl_delete.h>

#include <gtkmmext/utils.h>
#include <gtkmmext/selector.h>
#include <gtkmmext/gtk_ui.h>
#include <gtkmmext/stop_signal.h>
#include <gtkmmext/choice.h>

#include <ardour/session.h>
#include <ardour/utils.h>
#include <ardour/insert.h>
#include <ardour/location.h>

#include "ardour_ui.h"
#include "public_editor.h"
#include "imageframe_time_axis.h"
#include "canvas-simplerect.h"
#include "imageframe_time_axis_view.h"
#include "marker_time_axis_view.h"
#include "imageframe_view.h"
#include "marker_time_axis.h"
#include "marker_view.h"
#include "utils.h"
#include "prompter.h"
#include "rgb_macros.h"

#include "i18n.h"

using namespace ARDOUR;
using namespace SigC;
using namespace Gtk;

//XXX should really have a common home...
static const gchar* small_x_xpm[] = {
      "11 11 2 1",
      "     c None",
      ".    c #000000",
      "           ",
      "           ",
      "  .     .  ",
      "   .   .   ",
      "    . .    ",
      "     .     ",
      "    . .    ",
      "   .   .   ",
      "  .     .  ",
      "           ",
      "           "};

      
/**
 * Abstract Constructor for base visual time axis classes
 *
 * @param name the name/Id of thie TimeAxis
 * @param ed the Ardour PublicEditor
 * @param sess the current session
 * @param canvas the parent canvas object
 */
00086 VisualTimeAxis::VisualTimeAxis(std::string name, PublicEditor& ed, ARDOUR::Session& sess, Widget *canvas)
      : AxisView(sess),
        TimeAxisView(sess,ed,(TimeAxisView*) 0, canvas),
        visual_button (_("v")),
        size_button (_("h"))
{
      time_axis_name = name ;
      name_prompter = 0 ;
      _color = unique_random_color() ;
      _marked_for_display = true;
      
      name_entry.activate.connect(slot(*this, &VisualTimeAxis::name_entry_changed)) ;
      name_entry.focus_out_event.connect(slot(*this, &VisualTimeAxis::name_entry_focus_out_handler)) ;
      name_entry.button_press_event.connect(slot(*this, &VisualTimeAxis::name_entry_button_press_handler)) ;
      name_entry.button_release_event.connect(slot(*this, &VisualTimeAxis::name_entry_button_release_handler)) ;
      name_entry.key_release_event.connect(slot(*this, &VisualTimeAxis::name_entry_key_release_handler)) ;
      
      size_button.set_name("TrackSizeButton") ;
      visual_button.set_name("TrackVisualButton") ;
      hide_button.set_name("TrackRemoveButton") ;
      hide_button.add(*(Gtk::manage(new Gtk::Pixmap(small_x_xpm)))) ;
      size_button.button_release_event.connect (slot (*this, &VisualTimeAxis::size_click)) ;
      visual_button.clicked.connect (slot (*this, &VisualTimeAxis::visual_click)) ;
      hide_button.clicked.connect (slot (*this, &VisualTimeAxis::hide_click)) ;
      ARDOUR_UI::instance()->tooltips().set_tip(size_button,_("Display Height")) ;
      ARDOUR_UI::instance()->tooltips().set_tip(visual_button, _("Visual options")) ;
      ARDOUR_UI::instance()->tooltips().set_tip(hide_button, _("Hide this track")) ;
            
      controls_table.attach (hide_button, 0, 1, 1, 2, GTK_FILL|GTK_EXPAND, GTK_FILL|GTK_EXPAND);
      controls_table.attach (visual_button, 1, 2, 1, 2, GTK_FILL|GTK_EXPAND, GTK_FILL|GTK_EXPAND);
      controls_table.attach (size_button, 2, 3, 1, 2, GTK_FILL|GTK_EXPAND, GTK_FILL|GTK_EXPAND);

      /* remove focus from the buttons */
      size_button.unset_flags(GTK_CAN_FOCUS) ;
      hide_button.unset_flags(GTK_CAN_FOCUS) ;
      visual_button.unset_flags(GTK_CAN_FOCUS) ;
      
      set_height(Normal) ;
}

/**
 * VisualTimeAxis Destructor
 *
 */
00130 VisualTimeAxis::~VisualTimeAxis()
{
      if(name_prompter)
      {
            delete name_prompter ;
            name_prompter = 0 ;
      }
}


//---------------------------------------------------------------------------------------//
// Name/Id Accessors/Mutators

void
00144 VisualTimeAxis::set_time_axis_name(std::string name, void* src)
{
      std::string old_name = time_axis_name ;
      
      if(name != time_axis_name)
      {
            time_axis_name = name ;
            label_view() ;
            editor.route_name_changed(this) ;
      
             NameChanged(time_axis_name, old_name, src) ; /* EMIT_SIGNAL */
      }
}

std::string
00159 VisualTimeAxis::name() const
{
      return(time_axis_name) ;
}


//---------------------------------------------------------------------------------------//
// ui methods & data

/**
 * Sets the height of this TrackView to one of the defined TrackHeghts
 *
 * @param h the TrackHeight value to set
 */
void
00174 VisualTimeAxis::set_height(TrackHeight h)
{
      TimeAxisView::set_height(h) ;
      
      switch (height)
      {
            case Largest:
            case Large:
            case Larger:
            case Normal:
            {
                  name_label.hide() ;
                  name_entry.show() ;
                  other_button_hbox.show_all() ;
                  break;
            }
            case Smaller:
            {
                  name_label.hide() ;
                  name_entry.show() ;
                  other_button_hbox.hide_all() ;
                  break;
            }
            case Small:
            {
                  name_label.show() ;
                  name_entry.hide() ;
                  other_button_hbox.hide_all() ;
            }
            break;
      }
}

/**
 * Handle the visuals button click
 *
 */
void
00212 VisualTimeAxis::visual_click()
{
      popup_display_menu(0);
}


/**
 * Handle the hide buttons click
 *
 */
void
00223 VisualTimeAxis::hide_click()
{
      editor.unselect_strip_in_display (*this);
}


/**
 * Allows the selection of a new color for this TimeAxis
 *
 */
void
00234 VisualTimeAxis::select_track_color ()
{
      if(choose_time_axis_color())
      {
            //Does nothing at this abstract point
      }
}

/**
 * Provides a color chooser for the selection of a new time axis color.
 *
 */
bool
00247 VisualTimeAxis::choose_time_axis_color()
{
      bool picked ;
      GdkColor color ;
      gdouble current[4] ;
      
      current[0] = _color.get_red() / 65535.0 ;
      current[1] = _color.get_green() / 65535.0 ;
      current[2] = _color.get_blue() / 65535.0 ;
      current[3] = 1.0 ;
      
      color = Gtkmmext::UI::instance()->get_color(_("ardour: color selection"),picked, current) ;
      
      if (picked)
      {
            set_time_axis_color(color) ;
      }
      return(picked) ;
}

/**
 * Sets the color of this TimeAxis to the specified color c
 *
 * @param c the new TimeAxis color
 */
void
00273 VisualTimeAxis::set_time_axis_color(Gdk_Color c)
{
      _color = c ;
}

void
00279 VisualTimeAxis::set_selected_regionviews (AudioRegionSelection& regions)
{
      // Not handled by purely visual TimeAxis
}

//---------------------------------------------------------------------------------------//
// Handle time axis removal

/**
 * Handles the Removal of this VisualTimeAxis
 *
 * @param src the identity of the object that initiated the change
 */
void
00293 VisualTimeAxis::remove_this_time_axis(void* src)
{
      vector<string> choices;

      std::string prompt  = compose (_("Do you really want to remove track \"%1\" ?\n(cannot be undone)"), time_axis_name);

      choices.push_back (_("Yes, remove it."));
      choices.push_back (_("No, do nothing."));

      Gtkmmext::Choice prompter (prompt, choices);

      prompter.chosen.connect (Gtk::Main::quit.slot());
      prompter.show_all ();

      Gtk::Main::run ();

      if (prompter.get_choice() == 0)
      {
            /*
               defer to idle loop, otherwise we'll delete this object
               while we're still inside this function ...
            */
            Gtk::Main::idle.connect(bind(slot(&VisualTimeAxis::idle_remove_this_time_axis), this, src));
      }
}

/**
 * Callback used to remove this time axis during the gtk idle loop
 * This is used to avoid deleting the obejct while inside the remove_this_time_axis
 * method
 *
 * @param ta the VisualTimeAxis to remove
 * @param src the identity of the object that initiated the change
 */
gint
00328 VisualTimeAxis::idle_remove_this_time_axis(VisualTimeAxis* ta, void* src)
{
       ta->VisualTimeAxisRemoved(ta->name(), src) ; /* EMIT_SIGNAL */
      delete ta ;
      ta = 0 ;
      return(false) ;
}




//---------------------------------------------------------------------------------------//
// Handle TimeAxis rename
            
/**
 * Construct a new prompt to receive a new name for this TimeAxis
 *
 * @see finish_time_axis_rename()
 */
void
00348 VisualTimeAxis::start_time_axis_rename()
{
      if(name_prompter)
      {
            delete name_prompter ;
            name_prompter = 0 ;
      }

      name_prompter = new ArdourPrompter() ;

      name_prompter->set_prompt (_("new name: ")) ;
      ARDOUR_UI::instance()->allow_focus(true) ;
      name_prompter->done.connect (slot(*this, &VisualTimeAxis::finish_time_axis_rename)) ;
      name_prompter->show_all() ;
}

/**
 * Handles the new name for this TimeAxis from the name prompt
 *
 * @see start_time_axis_rename()
 */
void
00370 VisualTimeAxis::finish_time_axis_rename()
{
      name_prompter->hide_all () ;
      ARDOUR_UI::instance()->allow_focus (false) ;
      
      if (name_prompter->status == Gtkmmext::Prompter::cancelled)
      {
            return;
      }
      
      string result ;
      name_prompter->get_result (result) ;
      //time_axis_name = result ;
      
      if (editor.get_named_time_axis(result) != 0) {
            ARDOUR_UI::instance()->popup_error (_("A track already exists with that name"));
            return ;
      }

      set_time_axis_name(result, this) ;
      
      delete name_prompter ;
      name_prompter = 0 ;
      label_view() ;
}

/**
 * Handle the (re-)displaying of the TimeAxis name label
 *
 */
void
00401 VisualTimeAxis::label_view()
{
      name_label.set_text(time_axis_name) ;
      name_entry.set_text(time_axis_name) ;
      ARDOUR_UI::instance()->tooltips().set_tip(name_entry, time_axis_name) ;
}


//---------------------------------------------------------------------------------------//
// Handle name entry signals 

void
VisualTimeAxis::name_entry_changed()
{
      ARDOUR_UI::generic_focus_out_event (0);

      string x = name_entry.get_text ();
      
      if (x == time_axis_name) {
            return;
      }

      if (x.length() == 0) {
            name_entry.set_text (time_axis_name);
            return;
      }

      strip_whitespace_edges(x);

      if (!editor.get_named_time_axis(x)) {
            set_time_axis_name(x, this);
      } else {
            ARDOUR_UI::instance()->popup_error (_("a track already exists with that name"));
            name_entry.set_text(time_axis_name);
      }
}

gint 
VisualTimeAxis::name_entry_button_press_handler(GdkEventButton *ev)
{
      if (ev->button == 3) {
            return stop_signal (name_entry, "button_press_event");
      }
      return FALSE;
}

gint 
VisualTimeAxis::name_entry_button_release_handler(GdkEventButton *ev)
{
      return FALSE;
}

gint
VisualTimeAxis::name_entry_focus_out_handler(GdkEventFocus* ev)
{
      name_entry_changed();
      return TRUE;
}

gint
VisualTimeAxis::name_entry_key_release_handler(GdkEventKey* ev)
{
      switch (ev->keyval) {
      case GDK_Tab:
      case GDK_Up:
      case GDK_Down:
            name_entry_changed ();
            return TRUE;

      default:
            return FALSE;
      }
}


//---------------------------------------------------------------------------------------//
// Super class methods not handled by VisualTimeAxis
            
void
00480 VisualTimeAxis::show_timestretch (jack_nframes_t start, jack_nframes_t end)
{
  // Not handled by purely visual TimeAxis
}

void
00486 VisualTimeAxis::hide_timestretch()
{
  // Not handled by purely visual TimeAxis
}



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