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 static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer data)
   9 {
  10         struct dive *dive = dive_table.dives[0];
  11         cairo_t *cr;
  12         int i;
  13
  14         cr = gdk_cairo_create(widget->window);
  15         cairo_set_source_rgb(cr, 0, 0, 0);
  16         gdk_cairo_rectangle(cr, &event->area);
  17         cairo_fill(cr);
  18
  19         cairo_set_line_width(cr, 3);
  20         cairo_set_source_rgb(cr, 1, 1, 1);
  21
  22         if (dive->samples) {
  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++) {
  26                         sample++;
  27                         cairo_line_to(cr, sample->time.seconds / 5, to_feet(sample->depth) * 3);
  28                 }
  29                 cairo_stroke(cr);
  30         }
  31
  32         cairo_destroy(cr);
  33
  34         return FALSE;
  35 }
  36
  37 GtkWidget *dive_profile_frame(void)
  38 {
  39         GtkWidget *frame;
  40         GtkWidget *da;
  41
  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);
  48
  49         return frame;
  50 }