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tempo_dialog.cc

/*
    Copyright (C) 2000-2007 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 <cstdio> // for snprintf, grrr 

#include <gtkmm/stock.h>
#include <gtkmm2ext/utils.h>

#include "tempo_dialog.h"
#include "utils.h"

#include "i18n.h"

using namespace Gtk;
using namespace Gtkmm2ext;
using namespace ARDOUR;
using namespace PBD;

TempoDialog::TempoDialog (TempoMap& map, nframes_t frame, const string & action)
      : ArdourDialog (_("edit tempo")),
        bpm_adjustment (60.0, 1.0, 999.9, 0.1, 1.0, 1.0),
        bpm_spinner (bpm_adjustment),
        bpm_frame (_("Beats per minute")),
        ok_button (action),
        cancel_button (_("Cancel")),
        when_bar_label (_("Bar")),
        when_beat_label (_("Beat")),
        when_table (2, 2),
        when_frame (_("Location"))
{
      BBT_Time when;
      Tempo tempo (map.tempo_at (frame));
      map.bbt_time (frame, when);

      init (when, tempo.beats_per_minute(), true);
}

TempoDialog::TempoDialog (TempoSection& section, const string & action)
      : ArdourDialog ("tempo dialog"),
        bpm_adjustment (60.0, 1.0, 999.9, 0.1, 1.0, 1.0),
        bpm_spinner (bpm_adjustment),
        bpm_frame (_("Beats per minute")),
        ok_button (action),
        cancel_button (_("Cancel")),
        when_bar_label (_("Bar")),
        when_beat_label (_("Beat")),
        when_table (2, 2),
        when_frame (_("Location"))
{
      init (section.start(), section.beats_per_minute(), section.movable());
}

void
TempoDialog::init (const BBT_Time& when, double bpm, bool movable)
{
      bpm_spinner.set_numeric (true);
      bpm_spinner.set_digits (1);
      bpm_spinner.set_wrap (true);
      bpm_spinner.set_value (bpm);

      hspacer1.set_border_width (5);
      hspacer1.pack_start (bpm_spinner, false, false);
      vspacer1.set_border_width (5);
      vspacer1.pack_start (hspacer1, false, false);

      bpm_frame.add (vspacer1);

      if (movable) {
            snprintf (buf, sizeof (buf), "%" PRIu32, when.bars);
            when_bar_entry.set_text (buf);
            snprintf (buf, sizeof (buf), "%" PRIu32, when.beats);
            when_beat_entry.set_text (buf);
            
            when_bar_entry.set_name ("MetricEntry");
            when_beat_entry.set_name ("MetricEntry");
            
            when_bar_label.set_name ("MetricLabel");
            when_beat_label.set_name ("MetricLabel");
            
            Gtkmm2ext::set_size_request_to_display_given_text (when_bar_entry, "999g", 5, 7);
            Gtkmm2ext::set_size_request_to_display_given_text (when_beat_entry, "999g", 5, 7);
            
            when_table.set_homogeneous (true);
            when_table.set_row_spacings (2);
            when_table.set_col_spacings (2);
            when_table.set_border_width (5);
            
            when_table.attach (when_bar_label, 0, 1, 0, 1, Gtk::AttachOptions(0), Gtk::FILL|Gtk::EXPAND);
            when_table.attach (when_bar_entry, 0, 1, 1, 2, Gtk::AttachOptions(0), Gtk::FILL|Gtk::EXPAND);
            
            when_table.attach (when_beat_label, 1, 2, 0, 1, Gtk::AttachOptions(0), Gtk::AttachOptions(0));
            when_table.attach (when_beat_entry, 1, 2, 1, 2, Gtk::AttachOptions(0), Gtk::AttachOptions(0));
            
            when_frame.set_name ("MetricDialogFrame");
            when_frame.add (when_table);

            get_vbox()->pack_start (when_frame, false, false);
      }

      bpm_frame.set_name ("MetricDialogFrame");
      bpm_spinner.set_name ("MetricEntry");

      get_vbox()->pack_start (bpm_frame, false, false);
      
      add_button (Stock::CANCEL, RESPONSE_CANCEL);
      add_button (Stock::APPLY, RESPONSE_ACCEPT);
      set_response_sensitive (Gtk::RESPONSE_ACCEPT, false);
      set_default_response (RESPONSE_ACCEPT);

      get_vbox()->show_all();
      bpm_spinner.show();

      set_name ("MetricDialog");

      bpm_spinner.signal_activate().connect (bind (mem_fun (*this, &TempoDialog::response), RESPONSE_ACCEPT));
      bpm_spinner.signal_button_press_event().connect (mem_fun (*this, &TempoDialog::bpm_button_press), false);
      bpm_spinner.signal_button_release_event().connect (mem_fun (*this, &TempoDialog::bpm_button_release), false);
}

bool
TempoDialog::bpm_button_press (GdkEventButton* ev)
{
      return false;
}

bool
TempoDialog::bpm_button_release (GdkEventButton* ev)
{     
      /* the value has been modified, accept should work now */

      set_response_sensitive (Gtk::RESPONSE_ACCEPT, true);
      return false;
}

double 
TempoDialog::get_bpm ()
{
      return bpm_spinner.get_value ();
}     

bool
TempoDialog::get_bbt_time (BBT_Time& requested)
{
      if (sscanf (when_bar_entry.get_text().c_str(), "%" PRIu32, &requested.bars) != 1) {
            return false;
      }
      
      if (sscanf (when_beat_entry.get_text().c_str(), "%" PRIu32, &requested.beats) != 1) {
            return false;
      }

      return true;
}


MeterDialog::MeterDialog (TempoMap& map, nframes_t frame, const string & action)
      : ArdourDialog ("meter dialog"),
        note_frame (_("Meter denominator")),
        bpb_frame (_("Beats per bar")),
        ok_button (action),
        cancel_button (_("Cancel")),
        when_bar_label (_("Bar")),
        when_beat_label (_("Beat")),
        when_frame (_("Location"))
{
      BBT_Time when;
      frame = map.round_to_bar(frame,0); 
      Meter meter (map.meter_at(frame));

      map.bbt_time (frame, when);
      init (when, meter.beats_per_bar(), meter.note_divisor(), true);
}

MeterDialog::MeterDialog (MeterSection& section, const string & action)
      : ArdourDialog ("meter dialog"),
        note_frame (_("Meter denominator")),
        bpb_frame (_("Beats per bar")),
        ok_button (action),
        cancel_button (_("Cancel")),
        when_bar_label (_("Bar")),
        when_beat_label (_("Beat")),
        when_frame (_("Location"))
{
      init (section.start(), section.beats_per_bar(), section.note_divisor(), section.movable());
}

void
MeterDialog::init (const BBT_Time& when, double bpb, double note_type, bool movable)
{
      snprintf (buf, sizeof (buf), "%.2f", bpb);
      bpb_entry.set_text (buf);
      bpb_entry.select_region (0, -1);
      Gtkmm2ext::set_size_request_to_display_given_text (bpb_entry, "999999g", 5, 5);

      strings.push_back (_("whole (1)"));
      strings.push_back (_("second (2)"));
      strings.push_back (_("third (3)"));
      strings.push_back (_("quarter (4)"));
      strings.push_back (_("eighth (8)"));
      strings.push_back (_("sixteenth (16)"));
      strings.push_back (_("thirty-second (32)"));
      
      set_popdown_strings (note_types, strings);

      if (note_type==1.0f)
            note_types.set_active_text (_("whole (1)"));
      else if (note_type==2.0f)
            note_types.set_active_text (_("second (2)"));
      else if (note_type==3.0f)
            note_types.set_active_text (_("third (3)"));
      else if (note_type==4.0f)
            note_types.set_active_text (_("quarter (4)"));
      else if (note_type==8.0f)
            note_types.set_active_text (_("eighth (8)"));
      else if (note_type==16.0f)
            note_types.set_active_text (_("sixteenth (16)"));
      else if (note_type==32.0f)
            note_types.set_active_text (_("thirty-second (32)"));
      else
            note_types.set_active_text (_("quarter (4)"));
            
      /* the string here needs to be the longest one to display */
      const guint32 FUDGE = 20; // Combo's are stupid - they steal space from the entry for the button
        Gtkmm2ext::set_size_request_to_display_given_text (note_types, "thirty-second (32)", 7+FUDGE, 7);

      hspacer1.set_border_width (5);
      hspacer1.pack_start (note_types, false, false);
      vspacer1.set_border_width (5);
      vspacer1.pack_start (hspacer1, false, false);

      hspacer2.set_border_width (5);
      hspacer2.pack_start (bpb_entry, false, false);
      vspacer2.set_border_width (5);
      vspacer2.pack_start (hspacer2, false, false);

      note_frame.add (vspacer1);
      bpb_frame.add (vspacer2);

      if (movable) {
            snprintf (buf, sizeof (buf), "%" PRIu32, when.bars);
            when_bar_entry.set_text (buf);
            snprintf (buf, sizeof (buf), "%" PRIu32, when.beats);
            when_beat_entry.set_text (buf);
            
            when_bar_entry.set_name ("MetricEntry");
            when_beat_entry.set_name ("MetricEntry");
            
            when_bar_label.set_name ("MetricLabel");
            when_beat_label.set_name ("MetricLabel");
            
            Gtkmm2ext::set_size_request_to_display_given_text (when_bar_entry, "999g", 5, 7);
            Gtkmm2ext::set_size_request_to_display_given_text (when_beat_entry, "999g", 5, 7);
            
            when_table.set_homogeneous (true);
            when_table.set_row_spacings (2);
            when_table.set_col_spacings (2);
            when_table.set_border_width (5);
            
            when_table.attach (when_bar_label, 0, 1, 0, 1, Gtk::AttachOptions(0), Gtk::FILL|Gtk::EXPAND);
            when_table.attach (when_bar_entry, 0, 1, 1, 2, Gtk::AttachOptions(0), Gtk::FILL|Gtk::EXPAND);
            
            when_table.attach (when_beat_label, 1, 2, 0, 1, Gtk::AttachOptions(0), Gtk::AttachOptions(0));
            when_table.attach (when_beat_entry, 1, 2, 1, 2, Gtk::AttachOptions(0), Gtk::AttachOptions(0));
            
            when_frame.set_name ("MetricDialogFrame");
            when_frame.add (when_table);
            
            get_vbox()->pack_start (when_frame, false, false);
      }
      get_vbox()->pack_start (bpb_frame, false, false);
      get_vbox()->pack_start (note_frame, false, false);
      
      bpb_frame.set_name ("MetricDialogFrame");
      note_frame.set_name ("MetricDialogFrame");
      bpb_entry.set_name ("MetricEntry");

      add_button (Stock::CANCEL, RESPONSE_CANCEL);
      add_button (Stock::APPLY, RESPONSE_ACCEPT);
      set_response_sensitive (RESPONSE_ACCEPT, false);
      set_default_response (RESPONSE_ACCEPT);

      get_vbox()->show_all ();
      bpb_entry.show ();

      set_name ("MetricDialog");
      bpb_entry.signal_activate().connect (bind (mem_fun (*this, &MeterDialog::response), RESPONSE_ACCEPT));
      bpb_entry.signal_key_press_event().connect (mem_fun (*this, &MeterDialog::bpb_key_press), false);
      bpb_entry.signal_key_release_event().connect (mem_fun (*this, &MeterDialog::bpb_key_release));
      note_types.signal_changed().connect (mem_fun (*this, &MeterDialog::note_types_change));
}

bool
MeterDialog::bpb_key_press (GdkEventKey* ev)
{

switch (ev->keyval) { 

 case GDK_0:
 case GDK_1:
 case GDK_2:
 case GDK_3:
 case GDK_4:
 case GDK_5:
 case GDK_6:
 case GDK_7:
 case GDK_8:
 case GDK_9:
 case GDK_KP_0:
 case GDK_KP_1:
 case GDK_KP_2:
 case GDK_KP_3:
 case GDK_KP_4:
 case GDK_KP_5:
 case GDK_KP_6:
 case GDK_KP_7:
 case GDK_KP_8:
 case GDK_KP_9:
 case GDK_period:
 case GDK_comma:
 case  GDK_KP_Delete:
 case  GDK_KP_Enter:
 case  GDK_Delete:
 case  GDK_BackSpace:
 case  GDK_Escape:
 case  GDK_Return:
 case  GDK_Home:
 case  GDK_End:
 case  GDK_Left:
 case  GDK_Right:
 case  GDK_Num_Lock:
 case  GDK_Tab:
    return FALSE;
 default:
      break;
 }

   return TRUE;
}

bool
MeterDialog::bpb_key_release (GdkEventKey* ev)
{
        if (bpb_entry.get_text() != "") {
              set_response_sensitive (RESPONSE_ACCEPT, true);
      } else {
              set_response_sensitive (RESPONSE_ACCEPT, false);
      }
      return false;
}

void
MeterDialog::note_types_change ()
{
        set_response_sensitive (Gtk::RESPONSE_ACCEPT, true);
}

double
MeterDialog::get_bpb ()
{
      double bpb = 0;
      
      if (sscanf (bpb_entry.get_text().c_str(), "%lf", &bpb) != 1) {
            return 0;
      }

      return bpb;
}
      
double
MeterDialog::get_note_type ()
{
      double note_type = 0;
      vector<string>::iterator i;
      string text = note_types.get_active_text();
      
      for (i = strings.begin(); i != strings.end(); ++i) {
            if (text == *i) {
                  if (sscanf (text.c_str(), "%*[^0-9]%lf", &note_type) != 1) {
                        error << string_compose(_("garbaged note type entry (%1)"), text) << endmsg;
                        return 0;
                  } else {
                        break;
                  }
            }
      } 
      
      if (i == strings.end()) {
            if (sscanf (text.c_str(), "%lf", &note_type) != 1) {
                  error << string_compose(_("incomprehensible note type entry (%1)"), text) << endmsg;
                  return 0;
            }
      }

      return note_type;
}

bool
MeterDialog::get_bbt_time (BBT_Time& requested)
{
      requested.ticks = 0;

      if (sscanf (when_bar_entry.get_text().c_str(), "%" PRIu32, &requested.bars) != 1) {
            return false;
      }
      
      if (sscanf (when_beat_entry.get_text().c_str(), "%" PRIu32, &requested.beats) != 1) {
            return false;
      }

      return true;
}

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