fix routing display for mono synths and midi-tracks w/o synth

diff --git a/gtk2_ardour/processor_box.cc b/gtk2_ardour/processor_box.cc
index c2421dcabf560cd822750a8165dc438d8204e974..cb72162773fb55fb770a6d21c970fed49cef0245 100644 (file)
--- a/gtk2_ardour/processor_box.cc
+++ b/gtk2_ardour/processor_box.cc
@@ -844,6 +844,13 @@ ProcessorEntry::RoutingIcon::on_expose_event (GdkEventExpose* ev)
                cairo_move_to (cr, si_x, height);
                cairo_line_to (cr, si_x, 0);
                cairo_stroke (cr);
+       } else if (midi_sources == 1 && midi_sinks == 1) {
+               /* unusual cases -- removed synth, midi-track w/audio plugins */
+               const float si_x  = rintf(width * (sinks   > 1 ? .2f : .5f)) + .5f;
+               const float si_x0 = rintf(width * (sources > 1 ? .2f : .5f)) + .5f;
+               cairo_move_to (cr, si_x, height);
+               cairo_curve_to (cr, si_x, 0, si_x0, height, si_x0, 0);
+               cairo_stroke (cr);
        }
 
        /* AUDIO */
@@ -855,8 +862,10 @@ ProcessorEntry::RoutingIcon::on_expose_event (GdkEventExpose* ev)
                        UINT_RGBA_B_FLT(audio_port_color));
 
        if (_splitting) {
+               assert(audio_sources < 2);
                assert(audio_sinks > 1);
-               const float si_x0 = rintf(width * .5f) + .5f;
+               /* assume there is only ever one MIDI port */
+               const float si_x0 = rintf(width * (midi_sources > 0 ? .8f : .5f)) + .5f;
                for (uint32_t i = midi_sinks; i < sinks; ++i) {
                        const float si_x = rintf(width * (.2f + .6f * i / (sinks - 1.f))) + .5f;
                        cairo_move_to (cr, si_x, height);