From e9e5c21068ab8d92b69d522a752f4362a112242b Mon Sep 17 00:00:00 2001
From: Sam Anthony <sam@samanthony.xyz>
Date: Sat, 1 Mar 2025 12:40:27 -0500
Subject: reformat MAP when unit changes

---
 ui.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'ui.c')

diff --git a/ui.c b/ui.c
index cd9dddb..fea7e20 100644
--- a/ui.c
+++ b/ui.c
@@ -24,6 +24,9 @@ static const char *const pressure_units[] = {"mbar", "kPa", "bar", "psi"};
 static const PressureMaker pressure_makers[nelem(pressure_units)] = {
 	millibar, kilopascal, bar, psi,
 };
+static const PressureReader pressure_readers[nelem(pressure_units)] = {
+	as_millibar, as_kilopascal, as_bar, as_psi,
+};
 
 static const char *const volume_flow_rate_units[] = {"m³/s", "CFM"};
 static VolumeFlowRateReader volume_flow_rate_readers[nelem(volume_flow_rate_units)] = {
@@ -94,6 +97,21 @@ set_map(UI *ui, int idx) {
 	ui->points[idx].map = p;
 }
 
+void
+set_map_unit(UI *ui) {
+	PressureMaker maker;
+	PressureReader reader;
+	int i;
+	Pressure map;
+
+	maker = pressure_makers[ui->map_unit.oldidx];
+	reader = pressure_readers[ui->map_unit.idx];
+	for (i = 0; i < ui->npoints; i++) {
+		map = maker(ui->map[i].value);
+		w_set_field(&ui->map[i], reader(map));
+	}
+}
+
 void
 set_ve(UI *ui, int idx) {
 	ui->points[idx].ve = percent(ui->ve[idx].value);
-- 
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