update routing wires display

diff --git a/gtk2_ardour/processor_box.cc b/gtk2_ardour/processor_box.cc
index d7175ff9e7f4c38c7c68d8bc20ca6e449c5a3dcb..1079b30347ebd65de5f3c4e388c78666d0c90680 100644 (file)
--- a/gtk2_ardour/processor_box.cc
+++ b/gtk2_ardour/processor_box.cc
@@ -843,10 +843,12 @@ ProcessorEntry::RoutingIcon::on_expose_event (GdkEventExpose* ev)
        const uint32_t sources = _sources.n_total();
        const uint32_t sinks = _sinks.n_total();
 
-       /* MIDI */
        const uint32_t midi_sources = _sources.n_midi();
        const uint32_t midi_sinks = _sinks.n_midi();
+       const uint32_t audio_sources = _sources.n_audio();
+       const uint32_t audio_sinks = _sinks.n_audio();
 
+       /* MIDI */
        cairo_set_source_rgb (cr,
                        UINT_RGBA_R_FLT(midi_port_color),
                        UINT_RGBA_G_FLT(midi_port_color),
@@ -871,11 +873,24 @@ ProcessorEntry::RoutingIcon::on_expose_event (GdkEventExpose* ev)
                cairo_move_to (cr, si_x, height);
                cairo_curve_to (cr, si_x, 0, si_x0, height, si_x0, 0);
                cairo_stroke (cr);
+       } else if (midi_sources == 0 && midi_sinks == 1) {
+               const double dx = 1 + rint(max(2., 2. * ARDOUR_UI::ui_scale));
+               // draw "T"
+               //  TODO connect back to track-input of last midi-out if any, otherwise draw "X"
+               const float si_x  = rintf(width * .2f) + .5f;
+               cairo_move_to (cr, si_x, height);
+               cairo_line_to (cr, si_x, height * .66);
+               cairo_move_to (cr, si_x - dx, height * .66);
+               cairo_line_to (cr, si_x + dx, height * .66);
+               cairo_stroke (cr);
+#ifndef NDEBUG
+       } else if (midi_sources != 0 && midi_sinks != 0) {
+               PBD::warning << string_compose("Programming error: midi routing display: A %1 -> %2 | M %3 -> %4 | T %5 -> %6", 
+                               audio_sources, audio_sinks, midi_sources, midi_sinks, sources, sinks) << endmsg;
+#endif
        }
 
        /* AUDIO */
-       const uint32_t audio_sources = _sources.n_audio();
-       const uint32_t audio_sinks = _sinks.n_audio();
        cairo_set_source_rgb (cr,
                        UINT_RGBA_R_FLT(audio_port_color),
                        UINT_RGBA_G_FLT(audio_port_color),
@@ -892,7 +907,7 @@ ProcessorEntry::RoutingIcon::on_expose_event (GdkEventExpose* ev)
                        cairo_curve_to (cr, si_x, 0, si_x0, height, si_x0, 0);
                        cairo_stroke (cr);
                }
-       } else if (audio_sources > 1) {
+       } else if (audio_sources > 1 && sinks > 1) {
                for (uint32_t i = 0 ; i < audio_sources; ++i) {
                        const float si_x = rintf(width * (.2f + .6f * (i + midi_sinks) / (sinks - 1.f))) + .5f;
                        const float si_x0 = rintf(width * (.2f + .6f * (i + midi_sources) / (sources - 1.f))) + .5f;
@@ -900,11 +915,26 @@ ProcessorEntry::RoutingIcon::on_expose_event (GdkEventExpose* ev)
                        cairo_curve_to (cr, si_x, 0, si_x0, height, si_x0, 0);
                        cairo_stroke (cr);
                }
-       } else if (audio_sources == 1 && audio_sinks == 1) {
-               const float si_x = rintf(width * .5f) + .5f;
+       } else if (audio_sources == 1 && audio_sinks > 0) {
+               float si_x, si_x0;
+               if (sinks == 1) {
+                       si_x = rintf(width * .5f) + .5f;
+               } else {
+                       si_x = rintf(width * (.2f + .6f * midi_sinks / (sinks - 1.f))) + .5f;
+               }
+               if (sources == 1) {
+                       si_x0 = rintf(width * .5f) + .5f;
+               } else {
+                       si_x0 = rintf(width * (.2f + .6f * midi_sources / (sources - 1.f))) + .5f;
+               }
                cairo_move_to (cr, si_x, height);
-               cairo_line_to (cr, si_x, 0);
+               cairo_curve_to (cr, si_x, 0, si_x0, height, si_x0, 0);
                cairo_stroke (cr);
+#ifndef NDEBUG
+       } else if (audio_sources != 0 && audio_sinks != 0) {
+               PBD::warning << string_compose("Programming error: audio routing display: A %1 -> %2 | M %3 -> %4 | T %5 -> %6", 
+                               audio_sources, audio_sinks, midi_sources, midi_sinks, sources, sinks) << endmsg;
+#endif
        }
        cairo_destroy(cr);
        return true;