profile.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <time.h>
   4
   5 #include "dive.h"
   6 #include "display.h"
   7
   8 int selected_dive = 0;
   9
  10 static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer data)
  11 {
  12         struct dive *dive = dive_table.dives[selected_dive];
  13         cairo_t *cr;
  14         int i;
  15
  16         cr = gdk_cairo_create(widget->window);
  17         cairo_set_source_rgb(cr, 0, 0, 0);
  18         gdk_cairo_rectangle(cr, &event->area);
  19         cairo_fill(cr);
  20
  21         cairo_set_line_width(cr, 3);
  22         cairo_set_source_rgb(cr, 1, 1, 1);
  23
  24         if (dive->samples) {
  25                 struct sample *sample = dive->sample;
  26                 cairo_move_to(cr, sample->time.seconds / 5, to_feet(sample->depth) * 3);
  27                 for (i = 1; i < dive->samples; i++) {
  28                         sample++;
  29                         cairo_line_to(cr, sample->time.seconds / 5, to_feet(sample->depth) * 3);
  30                 }
  31                 cairo_stroke(cr);
  32         }
  33
  34         cairo_destroy(cr);
  35
  36         return FALSE;
  37 }
  38
  39 GtkWidget *dive_profile_frame(void)
  40 {
  41         GtkWidget *frame;
  42         GtkWidget *da;
  43
  44         frame = gtk_frame_new("Dive profile");
  45         gtk_widget_show(frame);
  46         da = gtk_drawing_area_new();
  47         gtk_widget_set_size_request(da, 450, 350);
  48         g_signal_connect(da, "expose_event", G_CALLBACK(expose_event), NULL);
  49         gtk_container_add(GTK_CONTAINER(frame), da);
  50
  51         return frame;
  52 }