From 5e67630b23ae2570e8a27069f4d39f5c81981879 Mon Sep 17 00:00:00 2001
From: Jan Lentfer <jan.lentfer@web.de>
Date: Wed, 15 Aug 2018 22:22:36 +0200
Subject: [PATCH] LCXL: add isolate solo as secondary function

    Holding the Device button and press one
    of the Track Focus button will toggle
    solo isolation on the correspongind track
---
 libs/surfaces/launch_control_xl/controllers.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libs/surfaces/launch_control_xl/controllers.cc b/libs/surfaces/launch_control_xl/controllers.cc
index 987d84981a..17761cba9d 100644
--- a/libs/surfaces/launch_control_xl/controllers.cc
+++ b/libs/surfaces/launch_control_xl/controllers.cc
@@ -305,6 +305,12 @@ LaunchControlXL::update_track_focus_led(uint8_t n)
 void
 LaunchControlXL::button_track_focus(uint8_t n)
 {
+	if (buttons_down.find(Device) != buttons_down.end()) {
+		DEBUG_TRACE (DEBUG::LaunchControlXL, "DEVICE BUTTON HOLD\n");
+		stripable[n]->solo_isolate_control()->set_value (!stripable[n]->solo_isolate_control()->get_value(), PBD::Controllable::UseGroup);
+		return;
+	}
+
 	if (stripable[n]) {
 		if ( stripable[n]->is_selected() ) {
 			 ControlProtocol::RemoveStripableFromSelection (stripable[n]);