8 static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer data)
10 struct dive *dive = dive_table.dives[0];
14 cr = gdk_cairo_create(widget->window);
15 cairo_set_source_rgb(cr, 0, 0, 0);
16 gdk_cairo_rectangle(cr, &event->area);
19 cairo_set_line_width(cr, 3);
20 cairo_set_source_rgb(cr, 1, 1, 1);
23 struct sample *sample = dive->sample;
24 cairo_move_to(cr, sample->time.seconds / 5, to_feet(sample->depth) * 3);
25 for (i = 1; i < dive->samples; i++) {
27 cairo_line_to(cr, sample->time.seconds / 5, to_feet(sample->depth) * 3);
37 GtkWidget *dive_profile_frame(void)
42 frame = gtk_frame_new("Dive profile");
43 gtk_widget_show(frame);
44 da = gtk_drawing_area_new();
45 gtk_widget_set_size_request(da, 450, 350);
46 g_signal_connect(da, "expose_event", G_CALLBACK(expose_event), NULL);
47 gtk_container_add(GTK_CONTAINER(frame), da);