From 1d36406d88766d5e54a1f4a27ce6f6d90e1d163a Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Sat, 15 Jun 2019 11:14:29 +0200
Subject: Add stop attributes

---
 src/nanolight.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++----
 src/nanolight.h |  3 +++
 src/scanout.c   | 12 +++++++++++-
 3 files changed, 63 insertions(+), 5 deletions(-)

diff --git a/src/nanolight.c b/src/nanolight.c
index df93495..246cce1 100644
--- a/src/nanolight.c
+++ b/src/nanolight.c
@@ -451,7 +451,11 @@ static gboolean motion_sig(GtkWidget *da, GdkEventMotion *event, struct nanoligh
 				                        event->state & GDK_SHIFT_MASK);
 				signed int nv = fix->attr_vals_start[n] + inc;
 				cap_value(fix, n, &nv);
-				fix->attr_vals[n] = nv;
+				if ( !(fix->cls->attrs[n].props & ATTR_STOP) ) {
+					fix->attr_vals[n] = nv;
+				} else {
+					printf("Can't change step attr with mouse\n");
+				}
 			}
 		}
 	}
@@ -461,6 +465,30 @@ static gboolean motion_sig(GtkWidget *da, GdkEventMotion *event, struct nanoligh
 }
 
 
+static void change_stop_attr(struct nanolight *nl, signed int inc)
+{
+	int i;
+	for ( i=0; i<nl->n_sel; i++ ) {
+
+		struct fixture *fix = &nl->fixtures[nl->selection[i]];
+		int n;
+
+		if ( find_attribute(fix, nl->sel_attr, &n) ) {
+			if ( !(fix->cls->attrs[n].props & ATTR_STOP) ) {
+				printf("Can't change continuous attr with keys\n");
+				continue;
+			}
+			if ( (fix->attr_vals[n] == 0) && (inc < 0) ) continue;
+			if ( (fix->attr_vals[n] == fix->cls->attrs[n].n_stops-1) && (inc > 0) ) {
+				continue;
+			}
+			fix->attr_vals[n] += inc;
+		}
+
+	}
+	redraw(nl);
+}
+
 static void home_value(struct nanolight *nl)
 {
 	int i;
@@ -501,6 +529,14 @@ static gboolean key_press_sig(GtkWidget *da, GdkEventKey *event, struct nanoligh
 		case GDK_KEY_Right :
 		break;
 
+		case GDK_KEY_Up :
+		change_stop_attr(nl, +1);
+		break;
+
+		case GDK_KEY_Down :
+		change_stop_attr(nl, -1);
+		break;
+
 		case GDK_KEY_Return :
 		execute_command(nl);
 		break;
@@ -725,10 +761,13 @@ int main(int argc, char *argv[])
 	cls.attrs[6].addr_offset = 12;
 	cls.attrs[6].home = 0;
 
+	int rgobo_stops[] = {0, 6, 10, 15, 19, 24, 28};
 	cls.attrs[7].cls = ATT_RGOBO;
-	cls.attrs[7].props = 0;
+	cls.attrs[7].props = ATTR_STOP;
 	cls.attrs[7].addr_offset = 24;
 	cls.attrs[7].home = 0;
+	cls.attrs[7].stops = rgobo_stops;
+	cls.attrs[7].home = 7;
 
 	cls.attrs[8].cls = ATT_ZOOM;
 	cls.attrs[8].props = ATTR_16BIT;
@@ -740,15 +779,21 @@ int main(int argc, char *argv[])
 	cls.attrs[9].addr_offset = 34;
 	cls.attrs[9].home = 0;
 
+	int gobo_stops[] = {0, 67, 73, 78, 84, 89, 95, 100, 106};
 	cls.attrs[10].cls = ATT_GOBO;
-	cls.attrs[10].props = 0;
+	cls.attrs[10].props = ATTR_STOP;
 	cls.attrs[10].addr_offset = 22;
 	cls.attrs[10].home = 0;
+	cls.attrs[10].stops = gobo_stops;
+	cls.attrs[10].n_stops = 9;
 
+	int prism_stops[] = {0, 50};
 	cls.attrs[11].cls = ATT_PRISM;
-	cls.attrs[11].props = 0;
+	cls.attrs[11].props = ATTR_STOP;
 	cls.attrs[11].addr_offset = 27;
 	cls.attrs[11].home = 0;
+	cls.attrs[11].stops = prism_stops;
+	cls.attrs[11].n_stops = 2;
 
 	nl.fixture_width = 80.0;
 	nl.fixtures = NULL;
diff --git a/src/nanolight.h b/src/nanolight.h
index 5947665..dfe7b6a 100644
--- a/src/nanolight.h
+++ b/src/nanolight.h
@@ -28,6 +28,7 @@
 /* Attribute flags */
 #define ATTR_NONE (0)
 #define ATTR_16BIT (1)
+#define ATTR_STOP (2)
 
 enum attr_class
 {
@@ -52,6 +53,8 @@ struct attribute
 	int props;
 	int addr_offset;
 	int home;
+	int *stops;
+	int n_stops;
 };
 
 
diff --git a/src/scanout.c b/src/scanout.c
index a12094f..53d78c9 100644
--- a/src/scanout.c
+++ b/src/scanout.c
@@ -23,6 +23,7 @@
 
 #include <string.h>
 #include <stdlib.h>
+#include <assert.h>
 #include <libsoup/soup.h>
 
 #include "nanolight.h"
@@ -44,14 +45,23 @@ int scanout_all(struct nanolight *nl)
 		int j;
 		struct fixture *fix = &nl->fixtures[i];
 		for ( j=0; j<fix->cls->n_attrs; j++ ) {
+
 			/* Minus one to convert DMX address to indexing in 'dmx' array */
 			int pos = fix->base_addr + fix->cls->attrs[j].addr_offset - 1;
+
 			if ( universe < 0 ) universe = fix->universe;
 			if ( fix->universe != universe ) {
 				fprintf(stderr, "Sorry, only one universe for now!\n");
 				abort();
 			}
-			if ( fix->cls->attrs[j].props & ATTR_16BIT ) {
+
+			if ( fix->cls->attrs[j].props & ATTR_STOP ) {
+
+				int v = fix->attr_vals[j];
+				assert(!(fix->cls->attrs[j].props & ATTR_16BIT));
+				dmx[pos] = fix->cls->attrs[j].stops[v];
+
+			} else if ( fix->cls->attrs[j].props & ATTR_16BIT ) {
 				dmx[pos] = (fix->attr_vals[j] & 0xff00) >> 8;
 				dmx[pos+1] = fix->attr_vals[j] & 0xff;
 			} else {
-- 
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