Fix wrongly nested watertemp xml entry

[ext/subsurface.git] / profile.c

diff --git a/profile.c b/profile.c
index f850c2fff3a819a44c5199f770218d9fca7fe992..9d84ff29d64de926983555be28660abcef2786dc 100644 (file)
--- a/profile.c
+++ b/profile.c
@@ -5,29 +5,114 @@
 #include "dive.h"
 #include "display.h"
 
+int selected_dive = 0;
+
+#define ROUND_UP(x,y) ((((x)+(y)-1)/(y))*(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*60, ROUND_UP(seconds, 60*10));
+}
+
+static int round_feet_up(int feet)
+{
+       return MAX(90, ROUND_UP(feet+5, 15));
+}
+
+/* Scale to 0,0 -> maxx,maxy */
+#define SCALE(x,y) (x)*maxx/scalex+topx,(y)*maxy/scaley+topy
+
+static void plot(cairo_t *cr, int w, int h, struct dive *dive, int samples, struct sample *sample)
+{
+       int i;
+       double topx, topy, maxx, maxy;
+       double scalex, scaley;
+       int maxtime, maxdepth;
+       int begins, sec, depth;
+
+       topx = w / 20.0;
+       topy = h / 20.0;
+       maxx = (w - 2*topx);
+       maxy = (h - 2*topy);
+
+       cairo_set_line_width(cr, 2);
+
+       /* Get plot scaling limits */
+       maxtime = round_seconds_up(dive->duration.seconds);
+       maxdepth = round_feet_up(to_feet(dive->maxdepth));
+
+       /* Depth markers: every 15 ft */
+       scalex = 1.0;
+       scaley = maxdepth;
+       cairo_set_source_rgba(cr, 1, 1, 1, 0.5);
+       for (i = 15; i < maxdepth; i += 15) {
+               cairo_move_to(cr, SCALE(0, i));
+               cairo_line_to(cr, SCALE(1, i));
+       }
+
+       /* Time markers: every 5 min */
+       scalex = maxtime;
+       scaley = 1.0;
+       for (i = 5*60; i < maxtime; i += 5*60) {
+               cairo_move_to(cr, SCALE(i, 0));
+               cairo_line_to(cr, SCALE(i, 1));
+       }
+       cairo_stroke(cr);
+
+       scaley = maxdepth;
+
+       /* Depth profile */
+       cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.80);
+       begins = sample->time.seconds;
+       cairo_move_to(cr, SCALE(sample->time.seconds, to_feet(sample->depth)));
+       for (i = 1; i < dive->samples; i++) {
+               sample++;
+               sec = sample->time.seconds;
+               depth = to_feet(sample->depth);
+               cairo_line_to(cr, SCALE(sec, depth));
+       }
+       scaley = 1.0;
+       cairo_line_to(cr, SCALE(sec, 0));
+       cairo_line_to(cr, SCALE(begins, 0));
+       cairo_close_path(cr);
+       cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.20);
+       cairo_fill_preserve(cr);
+       cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.80);
+       cairo_stroke(cr);
+
+       /* Bounding box last */
+       scalex = scaley = 1.0;
+       cairo_set_source_rgb(cr, 1, 1, 1);
+       cairo_move_to(cr, SCALE(0,0));
+       cairo_line_to(cr, SCALE(0,1));
+       cairo_line_to(cr, SCALE(1,1));
+       cairo_line_to(cr, SCALE(1,0));
+       cairo_close_path(cr);
+       cairo_stroke(cr);
+
+}
+
 static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer data)
 {
-       struct dive *dive = dive_table.dives[0];
+       struct dive *dive = current_dive;
        cairo_t *cr;
-       int i;
+       int w,h;
+
+       w = widget->allocation.width;
+       h = widget->allocation.height;
 
        cr = gdk_cairo_create(widget->window);
        cairo_set_source_rgb(cr, 0, 0, 0);
-       gdk_cairo_rectangle(cr, &event->area);
-       cairo_fill(cr);
+       cairo_paint(cr);
 
-       cairo_set_line_width(cr, 3);
-       cairo_set_source_rgb(cr, 1, 1, 1);
-
-       if (dive->samples) {
-               struct sample *sample = dive->sample;
-               cairo_move_to(cr, sample->time.seconds / 5, to_feet(sample->depth) * 3);
-               for (i = 1; i < dive->samples; i++) {
-                       sample++;
-                       cairo_line_to(cr, sample->time.seconds / 5, to_feet(sample->depth) * 3);
-               }
-               cairo_stroke(cr);
-       }
+       if (dive && dive->samples)
+               plot(cr, w, h, dive, dive->samples, dive->sample);
 
        cairo_destroy(cr);