From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed, 9 Nov 2011 16:51:20 +0000 (-0800)
Subject: Add "enable" button for manual pressure setting
X-Git-Url: http://git.tdb.fi/?p=ext%2Fsubsurface.git;a=commitdiff_plain;h=c51b105526b7722d7d29d6111f4afd80a5e7c27b

Add "enable" button for manual pressure setting

This grays out the pressure settings in the cylinder editing widget if
the pressure data has been taken from the samples.  You can still
manually override the data, but you now need to enable that manual
override explicitly.

This makes the semantics of editing start/end pressures of dives with
pressure sample data a bit more intuitive, I think.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/equipment.c b/equipment.c
index 2e0e71a..19abbe6 100644
--- a/equipment.c
+++ b/equipment.c
@@ -46,7 +46,7 @@ struct cylinder_widget {
 	GtkWidget *hbox;
 	GtkComboBox *description;
 	GtkSpinButton *size, *pressure;
-	GtkWidget *start, *end;
+	GtkWidget *start, *end, *pressure_button;
 	GtkWidget *o2, *gasmix_button;
 };
 
@@ -101,11 +101,24 @@ static void set_cylinder_type_spinbuttons(struct cylinder_widget *cylinder, int
 
 static void set_cylinder_pressure_spinbuttons(struct cylinder_widget *cylinder, cylinder_t *cyl)
 {
+	int set;
+	unsigned int start, end;
 	double pressure;
 
-	convert_pressure(cyl->start.mbar, &pressure);
+	start = cyl->start.mbar;
+	end = cyl->end.mbar;
+	set = start || end;
+	if (!set) {
+		start = cyl->sample_start.mbar;
+		end = cyl->sample_end.mbar;
+	}
+	gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cylinder->pressure_button), set);
+	gtk_widget_set_sensitive(cylinder->start, set);
+	gtk_widget_set_sensitive(cylinder->end, set);
+
+	convert_pressure(start, &pressure);
 	gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->start), pressure);
-	convert_pressure(cyl->end.mbar, &pressure);
+	convert_pressure(end, &pressure);
 	gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->end), pressure);
 }
 
@@ -405,6 +418,8 @@ static void record_cylinder_changes(cylinder_t *cyl, struct cylinder_widget *cyl
 	pressure = gtk_spin_button_get_value(cylinder->pressure);
 	start = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->start));
 	end = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->end));
+	if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(cylinder->pressure_button)))
+		start = end = 0;
 	o2 = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->o2))*10 + 0.5;
 	if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button)))
 		o2 = 0;
@@ -496,6 +511,16 @@ static void nitrox_cb(GtkToggleButton *button, gpointer data)
 	gtk_widget_set_sensitive(cylinder->o2, state);
 }
 
+static void pressure_cb(GtkToggleButton *button, gpointer data)
+{
+	struct cylinder_widget *cylinder = data;
+	int state;
+
+	state = gtk_toggle_button_get_active(button);
+	gtk_widget_set_sensitive(cylinder->start, state);
+	gtk_widget_set_sensitive(cylinder->end, state);
+}
+
 static gboolean completion_cb(GtkEntryCompletion *widget, GtkTreeModel *model, GtkTreeIter *iter, struct cylinder_widget *cylinder)
 {
 	const char *desc;
@@ -559,6 +584,10 @@ static void cylinder_widget(GtkWidget *vbox, struct cylinder_widget *cylinder, G
 	hbox = gtk_hbox_new(FALSE, 3);
 	gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 
+	cylinder->pressure_button = gtk_check_button_new();
+	gtk_box_pack_start(GTK_BOX(hbox), cylinder->pressure_button, FALSE, FALSE, 3);
+	g_signal_connect(cylinder->pressure_button, "toggled", G_CALLBACK(pressure_cb), cylinder);
+
 	widget = create_spinbutton(hbox, "Start Pressure", 0, 5000, 1);
 	cylinder->start = widget;