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Switch from date based to dive trip based grouping

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Linus HATED the date based grouping - too much wasted space visually
("three levels of grouping are way too much") and asked for dive trip
based grouping instead.

This is a quick change to do just that, with an assumption that no
dive in 3 days means it's a new trip.

This also changes the summary entry to display a location for the trip,
for now we pick the location of the (chronologically) first dive of the
trip.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2012-08-16 04:27:03 -07:00
parent 621761233b
commit e6ecddfa3d
1 changed files with 35 additions and 41 deletions
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76
divelist.c
View file

@ -53,10 +53,8 @@ enum {
};
/* magic numbers that indicate (as negative values) model entries that
* are summary entries for day / month / year */
#define NEW_DAY 1
#define NEW_MON 2
#define NEW_YR 3
* are summary entries for a divetrip */
#define NEW_TRIP 1
#ifdef DEBUG_MODEL
static gboolean dump_model_entry(GtkTreeModel *model, GtkTreePath *path,
@ -240,23 +238,13 @@ static void date_data_func(GtkTreeViewColumn *col,
tm = gmtime(&when);
switch(idx) {
case -NEW_DAY:
case -NEW_TRIP:
snprintf(buffer, sizeof(buffer),
"%s, %s %d, %d",
"Trip %s, %s %d, %d",
weekday(tm->tm_wday),
monthname(tm->tm_mon),
tm->tm_mday, tm->tm_year + 1900);
break;
case -NEW_MON:
snprintf(buffer, sizeof(buffer),
"%s %d",
monthname(tm->tm_mon),
tm->tm_year + 1900);
break;
case -NEW_YR:
snprintf(buffer, sizeof(buffer),
"%d", tm->tm_year + 1900);
break;
default:
snprintf(buffer, sizeof(buffer),
"%s, %s %d, %d %02d:%02d",
@ -748,22 +736,20 @@ void update_dive_list_col_visibility(void)
return;
}
static int new_date(struct dive *dive, struct dive **last_dive, const int flag, time_t *tm_date)
/* random heuristic - not diving in three days implies new dive trip */
#define TRIP_THRESHOLD 3600*24*3
static int new_group(struct dive *dive, struct dive **last_dive, time_t *tm_date)
{
if (!last_dive)
return TRUE;
if (*last_dive) {
struct dive *ldive = *last_dive;
struct tm tm1, tm2;
(void) gmtime_r(&dive->when, &tm1);
(void) gmtime_r(&ldive->when, &tm2);
if (tm1.tm_year == tm2.tm_year &&
(tm1.tm_mon == tm2.tm_mon || flag > NEW_MON) &&
(tm1.tm_mday == tm2.tm_mday || flag > NEW_DAY))
if (abs(dive->when - ldive->when) < TRIP_THRESHOLD) {
*last_dive = dive;
return FALSE;
}
}
if (flag == NEW_DAY)
*last_dive = dive;
*last_dive = dive;
if (tm_date) {
struct tm *tm1 = gmtime(&dive->when);
tm1->tm_sec = 0;
@ -776,10 +762,12 @@ static int new_date(struct dive *dive, struct dive **last_dive, const int flag,
static void fill_dive_list(void)
{
int i, j;
GtkTreeIter iter, parent_iter[NEW_YR + 2], *parents[NEW_YR + 2] = {NULL, };
int i;
GtkTreeIter iter, parent_iter;
GtkTreeStore *liststore, *treestore;
struct dive *last_dive = NULL;
struct dive *first_trip_dive = NULL;
struct dive *last_trip_dive = NULL;
time_t dive_date;
treestore = GTK_TREE_STORE(dive_list.treemodel);
@ -789,23 +777,29 @@ static void fill_dive_list(void)
while (--i >= 0) {
struct dive *dive = dive_table.dives[i];
for (j = NEW_YR; j >= NEW_DAY; j--) {
if (new_date(dive, &last_dive, j, &dive_date))
{
gtk_tree_store_append(treestore, &parent_iter[j], parents[j+1]);
parents[j] = &parent_iter[j];
gtk_tree_store_set(treestore, parents[j],
DIVE_INDEX, -j,
DIVE_NR, -j,
DIVE_DATE, dive_date,
DIVE_LOCATION, "",
DIVE_TEMPERATURE, 0,
DIVE_SAC, 0,
if (new_group(dive, &last_dive, &dive_date))
{
/* make sure we display the first date of the trip in previous summary */
if (first_trip_dive && last_trip_dive && last_trip_dive->when < first_trip_dive->when)
gtk_tree_store_set(treestore, &parent_iter,
DIVE_DATE, last_trip_dive->when,
DIVE_LOCATION, last_trip_dive->location,
-1);
}
first_trip_dive = dive;
gtk_tree_store_append(treestore, &parent_iter, NULL);
gtk_tree_store_set(treestore, &parent_iter,
DIVE_INDEX, -NEW_TRIP,
DIVE_NR, -NEW_TRIP,
DIVE_DATE, dive_date,
DIVE_LOCATION, dive->location,
DIVE_TEMPERATURE, 0,
DIVE_SAC, 0,
-1);
}
last_trip_dive = dive;
update_cylinder_related_info(dive);
gtk_tree_store_append(treestore, &iter, parents[NEW_DAY]);
gtk_tree_store_append(treestore, &iter, &parent_iter);
gtk_tree_store_set(treestore, &iter,
DIVE_INDEX, i,
DIVE_NR, dive->number,