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/* statistics.c */
/* creates the UI for the Info & Stats page -
* controlled through the following interfaces:
*
* void show_dive_stats(struct dive *dive)
* void flush_dive_stats_changes(struct dive *dive)
*
* called from gtk-ui:
* GtkWidget *stats_widget(void)
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <time.h>
#include <gdk/gdkkeysyms.h>

#include "dive.h"
#include "display.h"
#include "display-gtk.h"
#include "divelist.h"

typedef struct {
GtkWidget *date,
*dive_time,
*surf_intv,
*max_depth,
*avg_depth,
*water_temp,
*sac,
*otu,
*o2he,
*gas_used;
} single_stat_widget_t;

static single_stat_widget_t single_w;

typedef struct {
GtkWidget *total_time,
*avg_time,
*shortest_time,
*longest_time,
*max_overall_depth,
*min_overall_depth,
*avg_overall_depth,
*min_sac,
*avg_sac,
*max_sac,
*selection_size,
*max_temp,
*avg_temp,
*min_temp;
} total_stats_widget_t;

static total_stats_widget_t stats_w;

typedef struct {
int period;
duration_t total_time;
/* avg_time is simply total_time / nr -- let's not keep this */
duration_t shortest_time;
duration_t longest_time;
depth_t max_depth;
depth_t min_depth;
depth_t avg_depth;
volume_t max_sac;
volume_t min_sac;
volume_t avg_sac;
int max_temp;
int min_temp;
unsigned int combined_temp;
unsigned int combined_count;
unsigned int selection_size;
unsigned int total_sac_time;
} stats_t;

static stats_t stats;
static stats_t stats_selection;
static stats_t *stats_monthly = NULL;
static stats_t *stats_yearly = NULL;

GtkWidget *yearly_tree = NULL;

enum {
YEAR,
DIVES,
TOTAL_TIME,
AVERAGE_TIME,
SHORTEST_TIME,
LONGEST_TIME,
AVG_DEPTH,
MIN_DEPTH,
MAX_DEPTH,
AVG_SAC,
MIN_SAC,
MAX_SAC,
AVG_TEMP,
MIN_TEMP,
MAX_TEMP,
N_COLUMNS
};

static char * get_time_string(int seconds, int maxdays);

static void process_dive(struct dive *dp, stats_t *stats)
{
int old_tt, sac_time = 0;
const char *unit;

old_tt = stats->total_time.seconds;
stats->total_time.seconds += dp->duration.seconds;
if (dp->duration.seconds > stats->longest_time.seconds)
stats->longest_time.seconds = dp->duration.seconds;
if (stats->shortest_time.seconds == 0 || dp->duration.seconds < stats->shortest_time.seconds)
stats->shortest_time.seconds = dp->duration.seconds;
if (dp->maxdepth.mm > stats->max_depth.mm)
stats->max_depth.mm = dp->maxdepth.mm;
if (stats->min_depth.mm == 0 || dp->maxdepth.mm < stats->min_depth.mm)
stats->min_depth.mm = dp->maxdepth.mm;
if (dp->watertemp.mkelvin) {
if (stats->min_temp == 0 || dp->watertemp.mkelvin < stats->min_temp)
stats->min_temp = dp->watertemp.mkelvin;
if (dp->watertemp.mkelvin > stats->max_temp)
stats->max_temp = dp->watertemp.mkelvin;
stats->combined_temp += get_temp_units(dp->watertemp.mkelvin, &unit);
stats->combined_count++;
}

/* Maybe we should drop zero-duration dives */
if (!dp->duration.seconds)
return;
stats->avg_depth.mm = (1.0 * old_tt * stats->avg_depth.mm +
dp->duration.seconds * dp->meandepth.mm) / stats->total_time.seconds;
if (dp->sac > 2800) { /* less than .1 cuft/min (2800ml/min) is bogus */
sac_time = stats->total_sac_time + dp->duration.seconds;
stats->avg_sac.mliter = (1.0 * stats->total_sac_time * stats->avg_sac.mliter +
dp->duration.seconds * dp->sac) / sac_time ;
if (dp->sac > stats->max_sac.mliter)
stats->max_sac.mliter = dp->sac;
if (stats->min_sac.mliter == 0 || dp->sac < stats->min_sac.mliter)
stats->min_sac.mliter = dp->sac;
stats->total_sac_time = sac_time;
}
}

static void init_tree()
{
GtkCellRenderer *renderer;
GtkTreeViewColumn *column;
GtkTreeStore *store;
int i;
PangoFontDescription *font_desc = pango_font_description_from_string(divelist_font);

gtk_widget_modify_font(yearly_tree, font_desc);
pango_font_description_free(font_desc);

renderer = gtk_cell_renderer_text_new ();
char *columns[] = {
"Year\n > Month", "#", "Duration\nTotal", "\nAverage",
"\nShortest", "\nLongest", "Depth\nAverage", "\nMinimum",
"\nMaximum", "SAC\nAverage", "\nMinimum", "\nMaximum", "Temperature\nAverage",
"\nMinimum", "\nMaximum" };

/* Add all the columns to the tree view */
for (i = 0; i < N_COLUMNS; ++i) {
column = gtk_tree_view_column_new();
gtk_tree_view_column_set_title(column, columns[i]);
gtk_tree_view_append_column(GTK_TREE_VIEW(yearly_tree), column);
renderer = gtk_cell_renderer_text_new();
gtk_tree_view_column_pack_start(column, renderer, TRUE);
gtk_tree_view_column_add_attribute(column, renderer, "text", i);
gtk_tree_view_column_set_resizable(column, TRUE);
}

/* Field types */
store = gtk_tree_store_new (
N_COLUMNS, // Columns in structure
G_TYPE_STRING, // Period (year or month)
G_TYPE_STRING, // Number of dives
G_TYPE_STRING, // Total duration
G_TYPE_STRING, // Average dive duation
G_TYPE_STRING, // Shortest dive
G_TYPE_STRING, // Longest dive
G_TYPE_STRING, // Average depth
G_TYPE_STRING, // Shallowest dive
G_TYPE_STRING, // Deepest dive
G_TYPE_STRING, // Average air consumption (SAC)
G_TYPE_STRING, // Minimum SAC
G_TYPE_STRING, // Maximum SAC
G_TYPE_STRING, // Average temperature
G_TYPE_STRING, // Minimum temperature
G_TYPE_STRING // Maximum temperature
);

gtk_tree_view_set_model (GTK_TREE_VIEW (yearly_tree), GTK_TREE_MODEL (store));
g_object_unref (store);
}

static void add_row_to_tree(GtkTreeStore *store, char *value, int index, GtkTreeIter *row_iter, GtkTreeIter *parent)
{
gtk_tree_store_append(store, row_iter, parent);
gtk_tree_store_set(store, row_iter, index, value, -1);
}

static void add_cell_to_tree(GtkTreeStore *store, char *value, int index, GtkTreeIter *parent)
{
gtk_tree_store_set(store, parent, index, value, -1);
}
static char * get_minutes(int seconds)
{
static char buf[80];
snprintf(buf, sizeof(buf), "%d:%.2d", FRACTION(seconds, 60));
return buf;
}

static void add_cell(GtkTreeStore *store, GtkTreeIter *parent, unsigned int val, int cell, gboolean depth_not_volume)
{
double value;
int decimals;
const char *unit;
char value_str[40];

if (depth_not_volume) {
value = get_depth_units(val, &decimals, &unit);
snprintf(value_str, sizeof(value_str), "%.*f %s", decimals, value, unit);
} else {
value = get_volume_units(val, &decimals, &unit);
snprintf(value_str, sizeof(value_str), "%.*f %s/min", decimals, value, unit);
}
add_cell_to_tree(store, value_str, cell, parent);
}

static void process_interval_stats(stats_t stats_interval, GtkTreeIter *parent, GtkTreeIter *row)
{
double value;
const char *unit;
char value_str[40];
GtkTreeStore *store;

store = GTK_TREE_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW(yearly_tree)));

/* Year or month */
snprintf(value_str, sizeof(value_str), "%d", stats_interval.period);
add_row_to_tree(store, value_str, 0, row, parent);
/* Dives */
snprintf(value_str, sizeof(value_str), "%d", stats_interval.selection_size);
add_cell_to_tree(store, value_str, 1, row);
/* Total duration */
add_cell_to_tree(store, get_time_string(stats_interval.total_time.seconds, 0), 2, row);
/* Average dive duration */
add_cell_to_tree(store, get_minutes(stats_interval.total_time.seconds / stats_interval.selection_size), 3, row);
/* Shortest duration */
add_cell_to_tree(store, get_minutes(stats_interval.shortest_time.seconds), 4, row);
/* Longest duration */
add_cell_to_tree(store, get_minutes(stats_interval.longest_time.seconds), 5, row);
/* Average depth */
add_cell(store, row, stats_interval.avg_depth.mm, 6, TRUE);
/* Smallest maximum depth */
add_cell(store, row, stats_interval.min_depth.mm, 7, TRUE);
/* Deepest maximum depth */
add_cell(store, row, stats_interval.max_depth.mm, 8, TRUE);
/* Average air consumption */
add_cell(store, row, stats_interval.avg_sac.mliter, 9, FALSE);
/* Smallest average air consumption */
add_cell(store, row, stats_interval.min_sac.mliter, 10, FALSE);
/* Biggest air consumption */
add_cell(store, row, stats_interval.max_sac.mliter, 11, FALSE);
/* Average water temperature */
value = get_temp_units(stats_interval.min_temp, &unit);
if (stats_interval.combined_temp && stats_interval.combined_count) {
snprintf(value_str, sizeof(value_str), "%.1f %s", stats_interval.combined_temp / (stats_interval.combined_count * 1.0), unit);
add_cell_to_tree(store, value_str, 12, row);
} else {
add_cell_to_tree(store, "", 12, row);
}
/* Coldest water temperature */
snprintf(value_str, sizeof(value_str), "%.1f %s\t", value, unit);
add_cell_to_tree(store, value_str, 13, row);
/* Warmest water temperature */
value = get_temp_units(stats_interval.max_temp, &unit);
snprintf(value_str, sizeof(value_str), "%.1f %s", value, unit);
add_cell_to_tree(store, value_str, 14, row);
}

void clear_statistics()
{
GtkTreeStore *store;

store = GTK_TREE_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW(yearly_tree)));
gtk_tree_store_clear(store);
yearly_tree = NULL;
}

static gboolean on_delete(GtkWidget *window, GdkEvent *event, gpointer data)
{
clear_statistics();
gtk_widget_destroy(window);
return TRUE;
}

static void key_press_event(GtkWidget *window, GdkEventKey *event, gpointer data)
{
if ((event->string != NULL && event->keyval == GDK_Escape) ||
(event->string != NULL && event->keyval == GDK_w && event->state & GDK_CONTROL_MASK)) {
clear_statistics();
gtk_widget_destroy(window);
}
}

void update_yearly_stats()
{
int i, j, combined_months, month = 0;
GtkTreeIter year_iter, month_iter;
GtkTreeStore *store;

store = GTK_TREE_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW(yearly_tree)));
gtk_tree_store_clear(store);

for (i = 0; stats_yearly != NULL && stats_yearly[i].period; ++i) {
process_interval_stats(stats_yearly[i], NULL, &year_iter);
combined_months = 0;

for (j = 0; combined_months < stats_yearly[i].selection_size; ++j) {
combined_months += stats_monthly[month].selection_size;
process_interval_stats(stats_monthly[month++], &year_iter, &month_iter);
}
}
}

void show_yearly_stats()
{
GtkWidget *window;
GtkWidget *sw;

if (yearly_tree)
return;

window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
sw = gtk_scrolled_window_new (NULL, NULL);
yearly_tree = gtk_tree_view_new ();

gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
gtk_window_set_default_size(GTK_WINDOW(window), 640, 480);
gtk_window_set_title(GTK_WINDOW(window), "Yearly Statistics");
gtk_container_set_border_width(GTK_CONTAINER(window), 5);
GTK_WINDOW(window)->allow_shrink = TRUE;
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sw), GTK_SHADOW_ETCHED_IN);

gtk_container_add (GTK_CONTAINER (sw), yearly_tree);
gtk_container_add (GTK_CONTAINER (window), sw);

/* Display the yearly statistics on top level
* Monthly statistics are available by expanding a year */
init_tree();
update_yearly_stats();

g_signal_connect (G_OBJECT (window), "key_press_event", G_CALLBACK (key_press_event), NULL);
g_signal_connect (G_OBJECT (window), "delete-event", G_CALLBACK (on_delete), NULL);
gtk_widget_show_all(window);
}

static void process_all_dives(struct dive *dive, struct dive **prev_dive)
{
int idx;
struct dive *dp;
struct tm tm;
int current_year = 0;
int current_month = 0;
int year_iter = 0;
int month_iter = 0;
int prev_month = 0, prev_year = 0;
unsigned int size;

*prev_dive = NULL;
memset(&stats, 0, sizeof(stats));
if (dive_table.nr > 0) {
stats.shortest_time.seconds = dive_table.dives[0]->duration.seconds;
stats.min_depth.mm = dive_table.dives[0]->maxdepth.mm;
stats.selection_size = dive_table.nr;
}

/* allocate sufficient space to hold the worst
* case (one dive per year or all dives during
* one month) for yearly and monthly statistics*/

if (stats_yearly != NULL) {
free(stats_yearly);
free(stats_monthly);
}
size = sizeof(stats_t) * (dive_table.nr + 1);
stats_yearly = malloc(size);
stats_monthly = malloc(size);
if (!stats_yearly || !stats_monthly)
return;
memset(stats_yearly, 0, size);
memset(stats_monthly, 0, size);

/* this relies on the fact that the dives in the dive_table
* are in chronological order */
for (idx = 0; idx < dive_table.nr; idx++) {
dp = dive_table.dives[idx];
if (dp->when == dive->when) {
/* that's the one we are showing */
if (idx > 0)
*prev_dive = dive_table.dives[idx-1];
}
process_dive(dp, &stats);

/* yearly statistics */
utc_mkdate(dp->when, &tm);
if (current_year == 0)
current_year = tm.tm_year + 1900;

if (current_year != tm.tm_year + 1900) {
current_year = tm.tm_year + 1900;
process_dive(dp, &(stats_yearly[++year_iter]));
} else
process_dive(dp, &(stats_yearly[year_iter]));

stats_yearly[year_iter].selection_size++;
stats_yearly[year_iter].period = current_year;

/* monthly statistics */
if (current_month == 0) {
current_month = tm.tm_mon + 1;
} else {
if (current_month != tm.tm_mon + 1)
current_month = tm.tm_mon + 1;
if (prev_month != current_month || prev_year != current_year)
month_iter++;
}

process_dive(dp, &(stats_monthly[month_iter]));
stats_monthly[month_iter].selection_size++;
stats_monthly[month_iter].period = current_month;
prev_month = current_month;
prev_year = current_year;
}
if (yearly_tree)
update_yearly_stats();
}

/* make sure we skip the selected summary entries */
void process_selected_dives(void)
{
struct dive *dive;
unsigned int i, nr;

memset(&stats_selection, 0, sizeof(stats_selection));

nr = 0;
for_each_dive(i, dive) {
if (dive->selected) {
process_dive(dive, &stats_selection);
nr++;
}
}
stats_selection.selection_size = nr;
}

static void set_label(GtkWidget *w, const char *fmt, ...)
{
char buf[80];
va_list args;

va_start(args, fmt);
vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
gtk_label_set_text(GTK_LABEL(w), buf);
}

static char * get_time_string(int seconds, int maxdays)
{
static char buf[80];
if (maxdays && seconds > 3600 * 24 * maxdays)
snprintf(buf, sizeof(buf), "more than %d days", maxdays);
else {
int days = seconds / 3600 / 24;
int hours = (seconds - days * 3600 * 24) / 3600;
int minutes = (seconds - days * 3600 * 24 - hours * 3600) / 60;
if (days > 0)
snprintf(buf, sizeof(buf), "%dd %dh %dmin", days, hours, minutes);
else
snprintf(buf, sizeof(buf), "%dh %dmin", hours, minutes);
}
return buf;
}

static void show_single_dive_stats(struct dive *dive)
{
char buf[80];
double value;
int decimals;
const char *unit;
int idx, offset, gas_used;
struct dive *prev_dive;
struct tm tm;

process_all_dives(dive, &prev_dive);

utc_mkdate(dive->when, &tm);
snprintf(buf, sizeof(buf),
"%s, %s %d, %d %2d:%02d",
weekday(tm.tm_wday),
monthname(tm.tm_mon),
tm.tm_mday, tm.tm_year + 1900,
tm.tm_hour, tm.tm_min);

set_label(single_w.date, buf);
set_label(single_w.dive_time, "%d min", (dive->duration.seconds + 30) / 60);
if (prev_dive)
set_label(single_w.surf_intv,
get_time_string(dive->when - (prev_dive->when + prev_dive->duration.seconds), 4));
else
set_label(single_w.surf_intv, "unknown");
value = get_depth_units(dive->maxdepth.mm, &decimals, &unit);
set_label(single_w.max_depth, "%.*f %s", decimals, value, unit);
value = get_depth_units(dive->meandepth.mm, &decimals, &unit);
set_label(single_w.avg_depth, "%.*f %s", decimals, value, unit);
if (dive->watertemp.mkelvin) {
value = get_temp_units(dive->watertemp.mkelvin, &unit);
set_label(single_w.water_temp, "%.1f %s", value, unit);
} else
set_label(single_w.water_temp, "");
value = get_volume_units(dive->sac, &decimals, &unit);
if (value > 0) {
set_label(single_w.sac, "%.*f %s/min", decimals, value, unit);
} else
set_label(single_w.sac, "");
set_label(single_w.otu, "%d", dive->otu);
offset = 0;
gas_used = 0;
buf[0] = '\0';
/* for the O2/He readings just create a list of them */
for (idx = 0; idx < MAX_CYLINDERS; idx++) {
cylinder_t *cyl = &dive->cylinder[idx];
unsigned int start, end;

start = cyl->start.mbar ? : cyl->sample_start.mbar;
end = cyl->end.mbar ? : cyl->sample_end.mbar;
if (!cylinder_none(cyl)) {
/* 0% O2 strangely means air, so 21% - I don't like that at all */
int o2 = cyl->gasmix.o2.permille ? : AIR_PERMILLE;
if (offset > 0) {
snprintf(buf+offset, 80-offset, ", ");
offset += 2;
}
snprintf(buf+offset, 80-offset, "%d/%d", (o2 + 5) / 10,
(cyl->gasmix.he.permille + 5) / 10);
offset = strlen(buf);
}
/* and if we have size, start and end pressure, we can
* calculate the total gas used */
if (cyl->type.size.mliter && start && end)
gas_used += cyl->type.size.mliter / 1000.0 * (start - end);
}
set_label(single_w.o2he, buf);
if (gas_used) {
value = get_volume_units(gas_used, &decimals, &unit);
set_label(single_w.gas_used, "%.*f %s", decimals, value, unit);
} else
set_label(single_w.gas_used, "");
}

static void show_total_dive_stats(struct dive *dive)
{
double value;
int decimals, seconds;
const char *unit;
stats_t *stats_ptr;

stats_ptr = &stats_selection;

set_label(stats_w.selection_size, "%d", stats_ptr->selection_size);
if (stats_ptr->min_temp) {
value = get_temp_units(stats_ptr->min_temp, &unit);
set_label(stats_w.min_temp, "%.1f %s", value, unit);
}
if (stats_ptr->combined_temp && stats_ptr->combined_count)
set_label(stats_w.avg_temp, "%.1f %s", stats_ptr->combined_temp / (stats_ptr->combined_count * 1.0), unit);
if (stats_ptr->max_temp) {
value = get_temp_units(stats_ptr->max_temp, &unit);
set_label(stats_w.max_temp, "%.1f %s", value, unit);
}
set_label(stats_w.total_time, get_time_string(stats_ptr->total_time.seconds, 0));
seconds = stats_ptr->total_time.seconds;
if (stats_ptr->selection_size)
seconds /= stats_ptr->selection_size;
set_label(stats_w.avg_time, get_time_string(seconds, 0));
set_label(stats_w.longest_time, get_time_string(stats_ptr->longest_time.seconds, 0));
set_label(stats_w.shortest_time, get_time_string(stats_ptr->shortest_time.seconds, 0));
value = get_depth_units(stats_ptr->max_depth.mm, &decimals, &unit);
set_label(stats_w.max_overall_depth, "%.*f %s", decimals, value, unit);
value = get_depth_units(stats_ptr->min_depth.mm, &decimals, &unit);
set_label(stats_w.min_overall_depth, "%.*f %s", decimals, value, unit);
value = get_depth_units(stats_ptr->avg_depth.mm, &decimals, &unit);
set_label(stats_w.avg_overall_depth, "%.*f %s", decimals, value, unit);
value = get_volume_units(stats_ptr->max_sac.mliter, &decimals, &unit);
set_label(stats_w.max_sac, "%.*f %s/min", decimals, value, unit);
value = get_volume_units(stats_ptr->min_sac.mliter, &decimals, &unit);
set_label(stats_w.min_sac, "%.*f %s/min", decimals, value, unit);
value = get_volume_units(stats_ptr->avg_sac.mliter, &decimals, &unit);
set_label(stats_w.avg_sac, "%.*f %s/min", decimals, value, unit);
}

void show_dive_stats(struct dive *dive)
{
/* they have to be called in this order, as 'total' depends on
* calculations done in 'single' */
show_single_dive_stats(dive);
show_total_dive_stats(dive);
}

void flush_dive_stats_changes(struct dive *dive)
{
/* We do nothing: we require the "Ok" button press */
}

static GtkWidget *new_info_label_in_frame(GtkWidget *box, const char *label)
{
GtkWidget *label_widget;
GtkWidget *frame;

frame = gtk_frame_new(label);
label_widget = gtk_label_new(NULL);
gtk_box_pack_start(GTK_BOX(box), frame, TRUE, TRUE, 3);
gtk_container_add(GTK_CONTAINER(frame), label_widget);

return label_widget;
}

GtkWidget *total_stats_widget(void)
{
GtkWidget *vbox, *hbox, *statsframe, *framebox;

vbox = gtk_vbox_new(FALSE, 3);

statsframe = gtk_frame_new("Statistics");
gtk_box_pack_start(GTK_BOX(vbox), statsframe, TRUE, FALSE, 3);
framebox = gtk_vbox_new(FALSE, 3);
gtk_container_add(GTK_CONTAINER(statsframe), framebox);

/* first row */
hbox = gtk_hbox_new(FALSE, 3);
gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
stats_w.selection_size = new_info_label_in_frame(hbox, "Dives");
stats_w.max_temp = new_info_label_in_frame(hbox, "Max Temp");
stats_w.min_temp = new_info_label_in_frame(hbox, "Min Temp");
stats_w.avg_temp = new_info_label_in_frame(hbox, "Avg Temp");

/* second row */
hbox = gtk_hbox_new(FALSE, 3);
gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);

stats_w.total_time = new_info_label_in_frame(hbox, "Total Time");
stats_w.avg_time = new_info_label_in_frame(hbox, "Avg Time");
stats_w.longest_time = new_info_label_in_frame(hbox, "Longest Dive");
stats_w.shortest_time = new_info_label_in_frame(hbox, "Shortest Dive");

/* third row */
hbox = gtk_hbox_new(FALSE, 3);
gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);

stats_w.max_overall_depth = new_info_label_in_frame(hbox, "Max Depth");
stats_w.min_overall_depth = new_info_label_in_frame(hbox, "Min Depth");
stats_w.avg_overall_depth = new_info_label_in_frame(hbox, "Avg Depth");

/* fourth row */
hbox = gtk_hbox_new(FALSE, 3);
gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);

stats_w.max_sac = new_info_label_in_frame(hbox, "Max SAC");
stats_w.min_sac = new_info_label_in_frame(hbox, "Min SAC");
stats_w.avg_sac = new_info_label_in_frame(hbox, "Avg SAC");

return vbox;
}

GtkWidget *single_stats_widget(void)
{
GtkWidget *vbox, *hbox, *infoframe, *framebox;

vbox = gtk_vbox_new(FALSE, 3);

infoframe = gtk_frame_new("Dive Info");
gtk_box_pack_start(GTK_BOX(vbox), infoframe, TRUE, FALSE, 3);
framebox = gtk_vbox_new(FALSE, 3);
gtk_container_add(GTK_CONTAINER(infoframe), framebox);

/* first row */
hbox = gtk_hbox_new(FALSE, 3);
gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);

single_w.date = new_info_label_in_frame(hbox, "Date");
single_w.dive_time = new_info_label_in_frame(hbox, "Dive Time");
single_w.surf_intv = new_info_label_in_frame(hbox, "Surf Intv");

/* second row */
hbox = gtk_hbox_new(FALSE, 3);
gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);

single_w.max_depth = new_info_label_in_frame(hbox, "Max Depth");
single_w.avg_depth = new_info_label_in_frame(hbox, "Avg Depth");
single_w.water_temp = new_info_label_in_frame(hbox, "Water Temp");

/* third row */
hbox = gtk_hbox_new(FALSE, 3);
gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);

single_w.sac = new_info_label_in_frame(hbox, "SAC");
single_w.otu = new_info_label_in_frame(hbox, "OTU");
single_w.o2he = new_info_label_in_frame(hbox, "O" UTF8_SUBSCRIPT_2 " / He");
single_w.gas_used = new_info_label_in_frame(hbox, "Gas Used");

return vbox;
}

void clear_stats_widgets(void)
{
set_label(single_w.date, "");
set_label(single_w.dive_time, "");
set_label(single_w.surf_intv, "");
set_label(single_w.max_depth, "");
set_label(single_w.avg_depth, "");
set_label(single_w.water_temp, "");
set_label(single_w.sac, "");
set_label(single_w.sac, "");
set_label(single_w.otu, "");
set_label(single_w.o2he, "");
set_label(single_w.gas_used, "");
set_label(stats_w.total_time,"");
set_label(stats_w.avg_time,"");
set_label(stats_w.shortest_time,"");
set_label(stats_w.longest_time,"");
set_label(stats_w.max_overall_depth,"");
set_label(stats_w.min_overall_depth,"");
set_label(stats_w.avg_overall_depth,"");
set_label(stats_w.min_sac,"");
set_label(stats_w.avg_sac,"");
set_label(stats_w.max_sac,"");
set_label(stats_w.selection_size,"");
set_label(stats_w.max_temp,"");
set_label(stats_w.avg_temp,"");
set_label(stats_w.min_temp,"");
}
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