Stop plotting the gas / consumption information into the profile

[ext/subsurface.git] / info.c

diff --git a/info.c b/info.c
index 6834b1645c81174001453fb849d6f818efed80c0..9ca385796298ccc85a46243aa0806eebbac4f7bc 100644 (file)
--- a/info.c
+++ b/info.c
@@ -35,6 +35,86 @@ static char *get_text(GtkTextBuffer *buffer)
        return gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
 }
 
+void update_air_info(char *buffer)
+{
+       char markup[120];
+       
+       if (! buffer)
+               buffer = EMPTY_AIRCONSUMPTION;
+       snprintf(markup, sizeof(markup), "<span font=\"8\">%s</span>",buffer);
+       gtk_label_set_markup(GTK_LABEL(airconsumption), markup);
+}
+
+/*
+ * Return air usage (in liters).
+ */
+static double calculate_airuse(struct dive *dive)
+{
+       double airuse = 0;
+       int i;
+
+       for (i = 0; i < MAX_CYLINDERS; i++) {
+               cylinder_t *cyl = dive->cylinder + i;
+               int size = cyl->type.size.mliter;
+               double kilo_atm;
+
+               if (!size)
+                       continue;
+
+               kilo_atm = (cyl->start.mbar - cyl->end.mbar) / 1013250.0;
+
+               /* Liters of air at 1 atm == milliliters at 1k atm*/
+               airuse += kilo_atm * size;
+       }
+       return airuse;
+}
+
+static void update_air_info_frame(struct dive *dive)
+{
+       const double liters_per_cuft = 28.317;
+       const char *unit, *format, *desc;
+       double airuse;
+       char buffer1[80];
+       char buffer2[80];
+       int len;
+
+       airuse = calculate_airuse(dive);
+       if (!airuse) {
+               update_air_info(NULL);
+               return;
+       }
+       switch (output_units.volume) {
+       case LITER:
+               unit = "l";
+               format = "vol: %4.0f %s";
+               break;
+       case CUFT:
+               unit = "cuft";
+               format = "vol: %4.2f %s";
+               airuse /= liters_per_cuft;
+               break;
+       }
+       len = snprintf(buffer1, sizeof(buffer1), format, airuse, unit);
+       if (dive->duration.seconds) {
+               double pressure = 1 + (dive->meandepth.mm / 10000.0);
+               double sac = airuse / pressure * 60 / dive->duration.seconds;
+               snprintf(buffer1+len, sizeof(buffer1)-len, 
+                               "\nSAC: %4.2f %s/min", sac, unit);
+       }
+       len = 0;
+       desc = dive->cylinder[0].type.description;
+       if (desc || dive->cylinder[0].gasmix.o2.permille) {
+               int o2 = dive->cylinder[0].gasmix.o2.permille / 10;
+               if (!desc)
+                       desc = "";
+               if (!o2)
+                       o2 = 21;
+               len = snprintf(buffer2, sizeof(buffer2), "%s (%d%%): used ", desc, o2);
+       }
+       snprintf(buffer2+len, sizeof(buffer2)-len, buffer1); 
+       update_air_info(buffer2);
+}
+
 void flush_dive_info_changes(struct dive *dive)
 {
        if (!dive)
@@ -155,6 +235,8 @@ void show_dive_info(struct dive *dive)
 
        text = dive->notes ? : "";
        gtk_text_buffer_set_text(notes, text, -1);
+
+       update_air_info_frame(dive);
 }
 
 static GtkWidget *info_label(GtkWidget *box, const char *str, GtkJustification jtype)
@@ -193,16 +275,6 @@ GtkWidget *dive_info_frame(void)
        return frame;
 }
 
-void update_air_info(char *buffer)
-{
-       char markup[120];
-       
-       if (! buffer)
-               buffer = EMPTY_AIRCONSUMPTION;
-       snprintf(markup, sizeof(markup), "<span font=\"8\">%s</span>",buffer);
-       gtk_label_set_markup(GTK_LABEL(airconsumption), markup);
-}
-
 static GtkEntry *text_entry(GtkWidget *box, const char *label)
 {
        GtkWidget *entry;