[PATCH] planning: Add option to have last stop at 6m/20ft

[Anton Lundin]

When diving in areas where there are risk of boats passing above you,
its common practise to do the last stop at 6m to better stay out of
harms way. When doing o2-deco, it doesn't matter for the deco time if
you are doing all the time at 6m, due to that you don't have any inert
gas in your breathing gas.

This code is a reintroduction of 0b8462bd lost somehow between
a70a8898..8fae0031

Signed-off-by: Anton Lundin <glance at acc.umu.se>
---
 planner-gtk.c | 21 +++++++++++++++++++++
 planner.c     |  8 ++++++++
 planner.h     |  1 +
 3 files changed, 30 insertions(+)

diff --git a/planner-gtk.c b/planner-gtk.c
index 1b99fb3..d5fddec 100644
--- a/planner-gtk.c
+++ b/planner-gtk.c
@@ -253,6 +253,16 @@ static gboolean gf_focus_out_cb(GtkWidget *entry, GdkEvent * event, gpointer dat
 	return FALSE;
 }
 
+static gboolean last_stop_toggled_cb(GtkWidget *entry, GdkEvent * event, gpointer data)
+{
+	char *error_string = NULL;
+	set_last_stop(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(entry)));
+	show_planned_dive(&error_string);
+	if (error_string)
+		show_error(error_string);
+	return FALSE;
+}
+
 static GtkWidget *add_gas_combobox_to_box(GtkWidget *box, const char *label, int idx)
 {
 	GtkWidget *frame, *combo;
@@ -382,6 +392,17 @@ void input_plan()
 	add_entry_with_callback(hbox, 12, _("Dive starts when?"), "+60:00", starttime_focus_out_cb, NULL);
 	add_entry_with_callback(hbox, 12, _("Surface Pressure (mbar)"), SURFACE_PRESSURE_STRING, surfpres_focus_out_cb, NULL);
 
+	if (get_units()->length == METERS)
+		labeltext = _("Last stop at 6 Meters");
+	else
+		labeltext = _("Last stop at 20 Feet");
+
+	set_last_stop(FALSE);
+	content = gtk_check_button_new_with_label(labeltext);
+	gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(content), 0);
+	gtk_box_pack_start(GTK_BOX(hbox), content, FALSE, FALSE, 6);
+	g_signal_connect(G_OBJECT(content), "toggled", G_CALLBACK(last_stop_toggled_cb), NULL);
+
 	hbox = gtk_hbox_new(FALSE, 0);
 	gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);
 	if (get_units()->volume == CUFT) {
diff --git a/planner.c b/planner.c
index 676afd4..71273b3 100644
--- a/planner.c
+++ b/planner.c
@@ -47,6 +47,14 @@ void dump_plan(struct diveplan *diveplan)
 }
 #endif
 
+void set_last_stop(gboolean last_stop_6m)
+{
+	if (last_stop_6m == TRUE)
+		decostoplevels[1] = 6000;
+	else
+		decostoplevels[1] = 3000;
+}
+
 void get_gas_from_events(struct divecomputer *dc, int time, int *o2, int *he)
 {
 	struct event *event = dc->events;
diff --git a/planner.h b/planner.h
index 099f640..4de3c46 100644
--- a/planner.h
+++ b/planner.h
@@ -11,6 +11,7 @@ extern timestamp_t current_time_notz(void);
 extern void show_planned_dive(char **error_string_p);
 extern int add_duration_to_nth_dp(struct diveplan *diveplan, int idx, int duration, gboolean is_rel);
 extern void add_po2_to_nth_dp(struct diveplan *diveplan, int idx, int po2);
+extern void set_last_stop(gboolean last_stop_6m);
 
 extern struct diveplan diveplan;
 extern struct dive *planned_dive;
-- 
1.8.1.2