Do gasmix as an empty element XML too

[ext/subsurface.git] / profile.c

diff --git a/profile.c b/profile.c
index b67557088762f330d31e07e20da699193d62bdf4..9d84ff29d64de926983555be28660abcef2786dc 100644 (file)
--- a/profile.c
+++ b/profile.c
@@ -8,16 +8,21 @@
 int selected_dive = 0;
 
 #define ROUND_UP(x,y) ((((x)+(y)-1)/(y))*(y))
-#define MAX(x,y) ((x) > (y) ? (x) : (y))
 
+/*
+ * When showing dive profiles, we scale things to the
+ * current dive. However, we don't scale past less than
+ * 30 minutes or 90 ft, just so that small dives show
+ * up as such.
+ */
 static int round_seconds_up(int seconds)
 {
-       return MAX(30, ROUND_UP(seconds, 60*10));
+       return MAX(30*60, ROUND_UP(seconds, 60*10));
 }
 
 static int round_feet_up(int feet)
 {
-       return MAX(45, ROUND_UP(feet+5, 15));
+       return MAX(90, ROUND_UP(feet+5, 15));
 }
 
 /* Scale to 0,0 -> maxx,maxy */
@@ -95,7 +100,7 @@ static void plot(cairo_t *cr, int w, int h, struct dive *dive, int samples, stru
 
 static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer data)
 {
-       struct dive *dive = dive_table.dives[selected_dive];
+       struct dive *dive = current_dive;
        cairo_t *cr;
        int w,h;
 
@@ -106,7 +111,7 @@ static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer
        cairo_set_source_rgb(cr, 0, 0, 0);
        cairo_paint(cr);
 
-       if (dive->samples)
+       if (dive && dive->samples)
                plot(cr, w, h, dive, dive->samples, dive->sample);
 
        cairo_destroy(cr);