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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.

*/

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

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

#include <gtkmm2ext/utils.h>
#include <gtkmm2ext/selector.h>
#include <gtkmm2ext/gtk_ui.h>
#include <gtkmm2ext/stop_signal.h>
#include <gtkmm2ext/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 "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 "canvas_impl.h"

#include "i18n.h"

using namespace ARDOUR;
using namespace PBD;
using namespace sigc;
using namespace Gtk;
      
/**
 * 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
 */
00069 VisualTimeAxis::VisualTimeAxis(const string & name, PublicEditor& ed, ARDOUR::Session& sess, Canvas& canvas)
      : AxisView(sess),
        TimeAxisView(sess,ed,(TimeAxisView*) 0, canvas),
        visual_button (_("v")),
        size_button (_("h"))
{
      time_axis_name = name ;
      _color = unique_random_color() ;
      _marked_for_display = true;
      
      name_entry.signal_activate().connect(mem_fun(*this, &VisualTimeAxis::name_entry_changed)) ;
      name_entry.signal_button_press_event().connect(mem_fun(*this, &VisualTimeAxis::name_entry_button_press_handler)) ;
      name_entry.signal_button_release_event().connect(mem_fun(*this, &VisualTimeAxis::name_entry_button_release_handler)) ;
      name_entry.signal_key_release_event().connect(mem_fun(*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::Image(get_xpm("small_x.xpm")))));
      size_button.signal_button_release_event().connect (mem_fun (*this, &VisualTimeAxis::size_click)) ;
      visual_button.signal_clicked().connect (mem_fun (*this, &VisualTimeAxis::visual_click)) ;
      hide_button.signal_clicked().connect (mem_fun (*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 (hNormal) ;
}

/**
 * VisualTimeAxis Destructor
 *
 */
00111 VisualTimeAxis::~VisualTimeAxis()
{
}


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

void
00120 VisualTimeAxis::set_time_axis_name(const 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
00135 VisualTimeAxis::name() const
{
      return(time_axis_name) ;
}


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

/**
 * Sets the height of this TrackView to one of the defined TrackHeghts
 *
 * @param h 
 */
void
00150 VisualTimeAxis::set_height(uint32_t h)
{
      TimeAxisView::set_height(h);
      
      if (h >= hNormal) {
            hide_name_label ();
            show_name_entry ();
            other_button_hbox.show_all() ;
      } else if (h >= hSmaller) {
            hide_name_label ();
            show_name_entry ();
            other_button_hbox.hide_all() ;
      } else if (h >= hSmall) {
            hide_name_entry ();
            show_name_label ();
            other_button_hbox.hide_all() ;
      }
}

/**
 * Handle the visuals button click
 *
 */
void
00174 VisualTimeAxis::visual_click()
{
      popup_display_menu(0);
}


/**
 * Handle the hide buttons click
 *
 */
void
00185 VisualTimeAxis::hide_click()
{
      // LAME fix for hide_button display refresh
      hide_button.set_sensitive(false);
      
      editor.hide_track_in_display (*this);
      
      hide_button.set_sensitive(true);
}


/**
 * Allows the selection of a new color for this TimeAxis
 *
 */
void
00201 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
00214 VisualTimeAxis::choose_time_axis_color()
{
      bool picked ;
      Gdk::Color color ;
      gdouble current[4] ;
      Gdk::Color current_color ;
      
      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 ;

      current_color.set_rgb_p (current[0],current[1],current[2]);
      color = Gtkmm2ext::UI::instance()->get_color(_("ardour: color selection"),picked, &current_color) ;
      
      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
00242 VisualTimeAxis::set_time_axis_color(Gdk::Color c)
{
      _color = c ;
}

void
00248 VisualTimeAxis::set_selected_regionviews (RegionSelection& 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
00262 VisualTimeAxis::remove_this_time_axis(void* src)
{
      vector<string> choices;

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

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

      Gtkmm2ext::Choice prompter (prompt, choices);

      if (prompter.run () == 1) {
            /*
              defer to idle loop, otherwise we'll delete this object
              while we're still inside this function ...
            */
            Glib::signal_idle().connect(bind(sigc::ptr_fun(&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
00291 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
00311 VisualTimeAxis::start_time_axis_rename()
{
      ArdourPrompter name_prompter;

      name_prompter.set_prompt (_("new name: ")) ;
      name_prompter.add_button (_("Rename"), Gtk::RESPONSE_ACCEPT);
      name_prompter.set_response_sensitive (Gtk::RESPONSE_ACCEPT, false);
      name_prompter.show_all() ;

      switch (name_prompter.run ()) {
      case Gtk::RESPONSE_ACCEPT:
        string result;
        name_prompter.get_result (result);
        if (result.length()) {
              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) ;
        }
      }
      label_view() ;
}

/**
 * Handles the new name for this TimeAxis from the name prompt
 *
 * @see start_time_axis_rename()
 */

void
00343 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()
{
      string x = name_entry.get_text ();
      
      if (x == time_axis_name) {
            return;
      }

      strip_whitespace_edges(x);

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

      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_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
00413 VisualTimeAxis::show_timestretch (nframes_t start, nframes_t end)
{
  // Not handled by purely visual TimeAxis
}

void
00419 VisualTimeAxis::hide_timestretch()
{
  // Not handled by purely visual TimeAxis
}



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