diff options
Diffstat (limited to 'gtk2_ardour/panner2d.cc')
-rw-r--r-- | gtk2_ardour/panner2d.cc | 138 |
1 files changed, 68 insertions, 70 deletions
diff --git a/gtk2_ardour/panner2d.cc b/gtk2_ardour/panner2d.cc index 51c42160ce..688ce93068 100644 --- a/gtk2_ardour/panner2d.cc +++ b/gtk2_ardour/panner2d.cc @@ -68,6 +68,7 @@ Panner2d::Panner2d (boost::shared_ptr<Panner> p, int32_t h) , position (AngularVector (0.0, 0.0), "") , width (0) , height (h) + , last_width (0) { panner->StateChanged.connect (connections, invalidator (*this), boost::bind (&Panner2d::handle_state_change, this), gui_context()); @@ -106,27 +107,7 @@ Panner2d::reset (uint32_t n_inputs) pucks.resize (n_inputs); } - switch (n_inputs) { - case 0: - break; - - case 1: - pucks[0]->set_text (""); - break; - - case 2: - pucks[0]->set_text ("R"); - pucks[1]->set_text ("L"); - break; - - default: - for (uint32_t i = 0; i < n_inputs; ++i) { - char buf[64]; - snprintf (buf, sizeof (buf), "%" PRIu32, i + 1); - pucks[i]->set_text (buf); - } - break; - } + label_pucks (); for (uint32_t i = 0; i < n_inputs; ++i) { pucks[i]->position = panner->signal_position (i); @@ -211,9 +192,48 @@ Panner2d::handle_state_change () } void +Panner2d::label_pucks () +{ + double w = panner->pannable()->pan_width_control->get_value(); + uint32_t sz = pucks.size(); + + switch (sz) { + case 0: + break; + + case 1: + pucks[0]->set_text (""); + break; + + case 2: + if (w >= 0.0) { + pucks[0]->set_text ("R"); + pucks[1]->set_text ("L"); + } else { + pucks[0]->set_text ("L"); + pucks[1]->set_text ("R"); + } + break; + + default: + for (uint32_t i = 0; i < sz; ++i) { + char buf[64]; + if (w >= 0.0) { + snprintf (buf, sizeof (buf), "%" PRIu32, i + 1); + } else { + snprintf (buf, sizeof (buf), "%" PRIu32, sz - i); + } + pucks[i]->set_text (buf); + } + break; + } +} + +void Panner2d::handle_position_change () { uint32_t n; + double w = panner->pannable()->pan_width_control->get_value(); position.position = AngularVector (panner->pannable()->pan_azimuth_control->get_value() * 360.0, 0.0); @@ -221,6 +241,13 @@ Panner2d::handle_position_change () pucks[i]->position = panner->signal_position (i); } + if (w * last_width <= 0) { + /* changed sign */ + label_pucks (); + } + + last_width = w; + vector<Speaker>& speakers (panner->get_speakers()->speakers()); for (n = 0; n < targets.size(); ++n) { @@ -274,9 +301,17 @@ Panner2d::find_closest_object (gdouble x, gdouble y) } } - if (best_distance > 20) { // arbitrary - return 0; - } + if (height > 100) { + /* "big" */ + if (best_distance > 30) { // arbitrary + return 0; + } + } else { + /* "small" */ + if (best_distance > 10) { // arbitrary + return 0; + } + } return closest; } @@ -326,7 +361,7 @@ Panner2d::on_expose_event (GdkEventExpose *event) /* horizontal line of "crosshairs" */ - cairo_set_source_rgb (cr, 0.0, 0.1, 0.7); + cairo_set_source_rgba (cr, 0.282, 0.517, 0.662, 1.0); cairo_move_to (cr, 0.5, height/2.0+0.5); cairo_line_to (cr, width+0.5, height/2+0.5); cairo_stroke (cr); @@ -359,54 +394,18 @@ Panner2d::on_expose_event (GdkEventExpose *event) if (pucks.size() > 1) { /* arc to show "diffusion" */ - cairo_move_to (cr, width/2, height/2); - - double max_angle = 0.0; - double min_angle = DBL_MAX; - - for (Targets::iterator i = pucks.begin(); i != pucks.end(); ++i) { - max_angle = max ((*i)->position.azi, max_angle); - min_angle = min ((*i)->position.azi, min_angle); - } - - /* if the angle between the max & min is bigger than 180, flip - them to use the opposite angle for the display. this - matches the psycho-acoustic perception of this condition - too, in almost all conditions that VBAP will handle. - */ - - if (fabs (max_angle - min_angle) > 180.0) { - swap (max_angle, min_angle); - } - - /* convert to radians */ - - min_angle = (min_angle / 360.0) * 2.0 * M_PI; - max_angle = (max_angle / 360.0) * 2.0 * M_PI; - - /* cairo has coordinates increasing in a clockwise direction */ - - max_angle = (2 * M_PI) - max_angle; - min_angle = (2 * M_PI) - min_angle; - - /* the above transformation will have reversed the min/max relationship */ - - swap (min_angle, max_angle); - - if (min_angle > max_angle) { - /* swapped because they span the zero position: draw two arc segments to span zero. - XXX there must be a way to get cairo to do this in a single call - */ - cairo_arc_negative (cr, width/2, height/2, dimen/2.0, max_angle, 0.0); - cairo_arc_negative (cr, width/2, height/2, dimen/2.0, 0.0, min_angle); - } else { - cairo_arc (cr, width/2, height/2, dimen/2.0, min_angle, max_angle); - } - + double width_angle = fabs (panner->pannable()->pan_width_control->get_value()) * 2 * M_PI; + double position_angle = (2 * M_PI) - panner->pannable()->pan_azimuth_control->get_value() * 2 * M_PI; + cairo_save (cr); + cairo_translate (cr, width/2, height/2); + cairo_rotate (cr, position_angle - width_angle); + cairo_move_to (cr, 0, 0); + cairo_arc_negative (cr, 0, 0, dimen/2.0, width_angle * 2.0, 0.0); cairo_close_path (cr); cairo_set_source_rgba (cr, 1.0, 0.419, 0.419, 0.45); cairo_fill (cr); + cairo_restore (cr); } if (!panner->bypassed()) { @@ -426,7 +425,6 @@ Panner2d::on_expose_event (GdkEventExpose *event) if (pucks.size() > 1) { for (Targets::iterator i = pucks.begin(); i != pucks.end(); ++i) { - Target* puck = *i; if (puck->visible) { |