From b6e5f569f3d29dddc595c71bb00eba35983b0d03 Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Tue, 11 Jun 2019 22:47:55 +0200
Subject: Home button for pan/tilt

---
 src/nanolight.c | 29 +++++++++++++++++++++++++++++
 src/nanolight.h |  1 +
 2 files changed, 30 insertions(+)

diff --git a/src/nanolight.c b/src/nanolight.c
index cffa48c..a9b3eab 100644
--- a/src/nanolight.c
+++ b/src/nanolight.c
@@ -344,6 +344,27 @@ static void update_mouse_orientation(struct nanolight *nl)
 }
 
 
+static void home_value(struct nanolight *nl)
+{
+	int i;
+	for ( i=0; i<nl->n_sel; i++ ) {
+
+		struct fixture *fix = &nl->fixtures[nl->selection[i]];
+		int n;
+
+		if ( nl->mouse_orientation ) {
+			if ( find_attribute(fix, ATT_PAN, &n) ) {
+				fix->attr_vals[n] = fix->cls->attrs[n].home;
+			}
+			if ( find_attribute(fix, ATT_TILT, &n) ) {
+				fix->attr_vals[n] = fix->cls->attrs[n].home;
+			}
+		}
+
+	}
+}
+
+
 static gboolean key_press_sig(GtkWidget *da, GdkEventKey *event, struct nanolight *nl)
 {
 	gboolean r;
@@ -389,6 +410,11 @@ static gboolean key_press_sig(GtkWidget *da, GdkEventKey *event, struct nanoligh
 		claim = 1;
 		break;
 
+		case GDK_KEY_Home :
+		home_value(nl);
+		claim = 1;
+		break;
+
 		case GDK_KEY_F1 :
 		update_mouse_orientation(nl);
 		claim = 1;
@@ -485,14 +511,17 @@ int main(int argc, char *argv[])
 	cls.attrs[0].cls = ATT_INTENSITY;
 	cls.attrs[0].props = 0;
 	cls.attrs[0].addr_offset = 50;
+	cls.attrs[0].home = 0;
 
 	cls.attrs[1].cls = ATT_PAN;
 	cls.attrs[1].props = ATTR_16BIT;
 	cls.attrs[1].addr_offset = 0;
+	cls.attrs[1].home = 32768;
 
 	cls.attrs[2].cls = ATT_TILT;
 	cls.attrs[2].props = ATTR_16BIT;
 	cls.attrs[2].addr_offset = 2;
+	cls.attrs[2].home = 32768;
 
 	nl.fixture_width = 80.0;
 	nl.fixtures = NULL;
diff --git a/src/nanolight.h b/src/nanolight.h
index a7f7136..67db396 100644
--- a/src/nanolight.h
+++ b/src/nanolight.h
@@ -42,6 +42,7 @@ struct attribute
 	enum attr_class cls;
 	int props;
 	int addr_offset;
+	int home;
 };
 
 
-- 
cgit v1.2.3