diff options
| author | Colin Fletcher <colin.m.fletcher@googlemail.com> | 2014-02-10 21:14:59 +0000 |
|---|---|---|
| committer | Colin Fletcher <colin.m.fletcher@googlemail.com> | 2014-07-05 21:47:48 +0100 |
| commit | e0eaea6471e25f4c3797450a96f35fcdbb1c6992 (patch) | |
| tree | 8f2cf248772c0f6cd30a72a468cec30bf31cfcfb /gtk2_ardour/tempo_dialog.cc | |
| parent | c9b0f0fcb7626de7afef2f3fca1b0c1dbd01bd5b (diff) | |
Add 'Tap tempo' button to 'Edit tempo' dialogue
Add a 'Tap tempo' button to the 'Edit tempo' dialogue box that uses
gettimeofday() to time the interval between successive clicks and sets the
beats-per-minute appropriately.
Diffstat (limited to 'gtk2_ardour/tempo_dialog.cc')
| -rw-r--r-- | gtk2_ardour/tempo_dialog.cc | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gtk2_ardour/tempo_dialog.cc b/gtk2_ardour/tempo_dialog.cc index 7c0e510aff..9173393ff5 100644 --- a/gtk2_ardour/tempo_dialog.cc +++ b/gtk2_ardour/tempo_dialog.cc @@ -42,6 +42,7 @@ TempoDialog::TempoDialog (TempoMap& map, framepos_t frame, const string&) , when_bar_label (_("bar:"), ALIGN_LEFT, ALIGN_CENTER) , when_beat_label (_("beat:"), ALIGN_LEFT, ALIGN_CENTER) , pulse_selector_label (_("Pulse note"), ALIGN_LEFT, ALIGN_CENTER) + , tap_tempo_button (_("Tap tempo")) { Timecode::BBT_Time when; Tempo tempo (map.tempo_at (frame)); @@ -57,6 +58,7 @@ TempoDialog::TempoDialog (TempoSection& section, const string&) , when_bar_label (_("bar:"), ALIGN_LEFT, ALIGN_CENTER) , when_beat_label (_("beat:"), ALIGN_LEFT, ALIGN_CENTER) , pulse_selector_label (_("Pulse note"), ALIGN_LEFT, ALIGN_CENTER) + , tap_tempo_button (_("Tap tempo")) { init (section.start(), section.beats_per_minute(), section.note_type(), section.movable()); } @@ -162,6 +164,8 @@ TempoDialog::init (const Timecode::BBT_Time& when, double bpm, double note_type, set_default_response (RESPONSE_ACCEPT); bpm_spinner.show (); + tap_tempo_button.show (); + get_vbox()->pack_end (tap_tempo_button); set_name ("MetricDialog"); @@ -174,6 +178,7 @@ TempoDialog::init (const Timecode::BBT_Time& when, double bpm, double note_type, when_beat_entry.signal_activate().connect (sigc::bind (sigc::mem_fun (*this, &TempoDialog::response), RESPONSE_ACCEPT)); when_beat_entry.signal_key_release_event().connect (sigc::mem_fun (*this, &TempoDialog::entry_key_release), false); pulse_selector.signal_changed().connect (sigc::mem_fun (*this, &TempoDialog::pulse_change)); + tap_tempo_button.signal_clicked().connect (sigc::mem_fun (*this, &TempoDialog::tap_tempo)); } void @@ -249,6 +254,27 @@ TempoDialog::pulse_change () set_response_sensitive (RESPONSE_ACCEPT, true); } +void +TempoDialog::tap_tempo () +{ + struct timeval now; + gettimeofday (&now, NULL); + + if (last_tap.tv_sec >= 0 || last_tap.tv_usec > 0) { + struct timeval diff; + double interval, bpm; + timersub (&now, &last_tap, &diff); + interval = diff.tv_sec + diff.tv_usec * 1.0e-6; + + bpm = 60.0 / interval; + if (bpm >= 20) { + bpm_spinner.set_value (bpm); + } + } + last_tap = now; + + +} MeterDialog::MeterDialog (TempoMap& map, framepos_t frame, const string&) : ArdourDialog (_("New Meter")) |