diff options
author | Paul Davis <paul@linuxaudiosystems.com> | 2011-04-21 21:49:47 +0000 |
---|---|---|
committer | Paul Davis <paul@linuxaudiosystems.com> | 2011-04-21 21:49:47 +0000 |
commit | 509cd57c74ad386267f6df371acd04d17569336c (patch) | |
tree | 0cd34036164ed17e98cb089b685aa35090087399 /gtk2_ardour/shuttle_control.cc | |
parent | 449d0cf486e8f3cd596a33cfde248472f2ca29d2 (diff) |
hopefully fix up shuttle operation in semitones mode
git-svn-id: svn://localhost/ardour2/branches/3.0@9404 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'gtk2_ardour/shuttle_control.cc')
-rw-r--r-- | gtk2_ardour/shuttle_control.cc | 101 |
1 files changed, 68 insertions, 33 deletions
diff --git a/gtk2_ardour/shuttle_control.cc b/gtk2_ardour/shuttle_control.cc index aa45c04643..c29da519b6 100644 --- a/gtk2_ardour/shuttle_control.cc +++ b/gtk2_ardour/shuttle_control.cc @@ -20,8 +20,6 @@ #include <cairo/cairo.h> -#include <pbd/stacktrace.h> - #include "ardour/ardour.h" #include "ardour/audioengine.h" #include "ardour/rc_configuration.h" @@ -39,6 +37,11 @@ using namespace ARDOUR; using std::min; using std::max; +gboolean qt (gboolean, gint, gint, gboolean, Gtk::Tooltip*, gpointer) +{ + return FALSE; +} + ShuttleControl::ShuttleControl () : _controllable (new ShuttleControllable (*this)) , binding_proxy (_controllable) @@ -62,7 +65,9 @@ ShuttleControl::ShuttleControl () Config->ParameterChanged.connect (parameter_connection, MISSING_INVALIDATOR, ui_bind (&ShuttleControl::parameter_changed, this, _1), gui_context()); - signal_query_tooltip().connect (sigc::mem_fun (*this, &ShuttleControl::on_query_tooltip)); + /* gtkmm 2.4: the C++ wrapper doesn't work */ + g_signal_connect ((GObject*) gobj(), "query-tooltip", G_CALLBACK (qt), NULL); + // signal_query_tooltip().connect (sigc::mem_fun (*this, &ShuttleControl::on_query_tooltip)); } ShuttleControl::~ShuttleControl () @@ -109,7 +114,7 @@ ShuttleControl::map_transport_state () if (speed != 0.0) { if (Config->get_shuttle_units() == Semitones) { - shuttle_fract = speed/2.0; + shuttle_fract = semitones_as_fract (speed_as_semitones (speed)); } else { shuttle_fract = speed/shuttle_max_speed; } @@ -248,29 +253,25 @@ ShuttleControl::on_button_release_event (GdkEventButton* ev) switch (ev->button) { case 1: - mouse_shuttle (ev->x, true); shuttle_grabbed = false; remove_modal_grab (); + if (Config->get_shuttle_behaviour() == Sprung) { if (_session->config.get_auto_play()) { - shuttle_fract = SHUTTLE_FRACT_SPEED1; _session->request_transport_speed (1.0); } else { - shuttle_fract = 0; _session->request_transport_speed (0.0); } - queue_draw (); - } + } else { + mouse_shuttle (ev->x, true); + } + return true; case 2: if (_session->transport_rolling()) { - shuttle_fract = SHUTTLE_FRACT_SPEED1; _session->request_transport_speed (1.0); - } else { - shuttle_fract = 0; - } - queue_draw (); + } return true; case 3: @@ -279,15 +280,12 @@ ShuttleControl::on_button_release_event (GdkEventButton* ev) } - use_shuttle_fract (true); - return true; } bool ShuttleControl::on_query_tooltip (int, int, bool, const Glib::RefPtr<Gtk::Tooltip>&) { - std::cerr << "OQT!\n"; return false; } @@ -302,11 +300,11 @@ ShuttleControl::on_scroll_event (GdkEventScroll* ev) case GDK_SCROLL_UP: case GDK_SCROLL_RIGHT: - shuttle_fract += 0.005; + shuttle_fract += 0.005; break; case GDK_SCROLL_DOWN: case GDK_SCROLL_LEFT: - shuttle_fract -= 0.005; + shuttle_fract -= 0.005; break; default: return false; @@ -330,16 +328,21 @@ ShuttleControl::on_motion_notify_event (GdkEventMotion* ev) gint ShuttleControl::mouse_shuttle (double x, bool force) { - double const half_width = get_width() / 2.0; - double distance = x - half_width; + double const center = get_width() / 2.0; + double distance_from_center = x - center; - if (distance > 0) { - distance = min (distance, half_width); + if (distance_from_center > 0) { + distance_from_center = min (distance_from_center, center); } else { - distance = max (distance, -half_width); + distance_from_center = max (distance_from_center, -center); } - shuttle_fract = distance / half_width; + /* compute shuttle fract as expressing how far between the center + and the edge we are. positive values indicate we are right of + center, negative values indicate left of center + */ + + shuttle_fract = distance_from_center / center; // center == half the width use_shuttle_fract (force); return true; } @@ -351,11 +354,49 @@ ShuttleControl::set_shuttle_fract (double f) use_shuttle_fract (false); } +int +ShuttleControl::speed_as_semitones (float speed) +{ + if (speed < 0.0) { + return (int) round (12.0 * fast_log2 (-speed)); + } else { + return (int) round (12.0 * fast_log2 (speed)); + } +} + +float +ShuttleControl::semitones_as_speed (int semi) +{ + return pow (2.0, (semi / 12.0)); +} + +float +ShuttleControl::semitones_as_fract (int semi) +{ + double const step = 1.0 / 24.0; // range is 24 semitones up & down + return semi * step; +} + +int +ShuttleControl::fract_as_semitones (float fract) +{ + double const step = 1.0 / 24.0; // range is 24 semitones up & down + return (int) round (shuttle_fract / step); +} + void ShuttleControl::use_shuttle_fract (bool force) { microseconds_t now = get_microseconds(); + if (Config->get_shuttle_units() == Semitones) { + shuttle_fract = max (-1.0f, shuttle_fract); + shuttle_fract = min (1.0f, shuttle_fract); + } else { + shuttle_fract = max (-shuttle_max_speed, shuttle_fract); + shuttle_fract = min (shuttle_max_speed, shuttle_fract); + } + /* do not attempt to submit a motion-driven transport speed request more than once per process cycle. */ @@ -369,9 +410,7 @@ ShuttleControl::use_shuttle_fract (bool force) double speed = 0; if (Config->get_shuttle_units() == Semitones) { - double const step = 1.0 / 24.0; // range is 24 semitones up & down - double const semitones = round (shuttle_fract / step); - speed = pow (2.0, (semitones / 12.0)); + speed = semitones_as_speed (fract_as_semitones (shuttle_fract)); } else { speed = shuttle_max_speed * shuttle_fract; } @@ -421,11 +460,7 @@ ShuttleControl::on_expose_event (GdkEventExpose* event) snprintf (buf, sizeof (buf), "%d%%", (int) round (speed * 100)); } } else { - if (speed < 0) { - snprintf (buf, sizeof (buf), "-%d semitones", (int) round (12.0 * fast_log2 (-speed))); - } else { - snprintf (buf, sizeof (buf), "+%d semitones", (int) round (12.0 * fast_log2 (speed))); - } + snprintf (buf, sizeof (buf), "%+d semitones", speed_as_semitones (speed)); } } else { snprintf (buf, sizeof (buf), _("Stopped")); |