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/*
* FSpot.TimeAdaptor.cs
*
* Author(s):
* Larry Ewing <lewing@novell.com>
* Stephane Delcroix <stephnae@delcroix.org>
*
* This is free software. See COPYING for details.
*/
using System;
using System.Threading;
using System.Collections.Generic;
using FSpot.Query;
using Hyena;
namespace FSpot {
public class TimeAdaptor : GroupAdaptor, FSpot.ILimitable {
Dictionary <int, int[]> years = new Dictionary<int, int[]> ();
public override event GlassSetHandler GlassSet;
public override void SetGlass (int min)
{
DateTime date = DateFromIndex (min);
if (GlassSet != null)
GlassSet (this, query.LookupItem (date));
}
public void SetLimits (int min, int max)
{
DateTime start = DateFromIndex (min);
DateTime end = DateFromIndex(max);
if (order_ascending)
end = end.AddMonths (1);
else
end = end.AddMonths(-1);
SetLimits (start, end);
}
public void SetLimits (DateTime start, DateTime end)
{
query.Range = (start > end) ? new DateRange (end, start) : new DateRange (start, end);
}
public override int Count ()
{
return years.Count * 12;
}
public override string GlassLabel (int item)
{
return String.Format ("{0} ({1})", DateFromIndex (item).ToString ("MMMM yyyy"), Value (item));
}
public override string TickLabel (int item)
{
DateTime start = DateFromIndex (item);
if ((start.Month == 12 && !order_ascending) || (start.Month == 1 && order_ascending))
return start.Year.ToString ();
else
return null;
}
public override int Value (int item)
{
if (order_ascending)
return years [startyear + item/12][item % 12];
else
return years [endyear - item/12][11 - item % 12];
}
public DateTime DateFromIndex (int item)
{
item = Math.Max (item, 0);
item = Math.Min (years.Count * 12 - 1, item);
if (order_ascending)
return DateFromIndexAscending (item);
return DateFromIndexDescending (item);
}
private DateTime DateFromIndexAscending (int item)
{
int year = startyear + item/12;
int month = 1 + (item % 12);
return new DateTime(year, month, 1);
}
private DateTime DateFromIndexDescending (int item)
{
int year = endyear - item/12;
int month = 12 - (item % 12);
return new DateTime (year, month, DateTime.DaysInMonth (year, month)).AddDays (1.0).AddMilliseconds (-.1);
}
public override int IndexFromPhoto (FSpot.IBrowsableItem photo)
{
if (order_ascending)
return IndexFromDateAscending (photo.Time);
return IndexFromDateDescending (photo.Time);
}
public int IndexFromDate (DateTime date)
{
if (order_ascending)
return IndexFromDateAscending(date);
return IndexFromDateDescending(date);
}
private int IndexFromDateAscending(DateTime date)
{
int year = date.Year;
int min_year = startyear;
int max_year = endyear;
if (year < min_year || year > max_year) {
Log.DebugFormat ("TimeAdaptor.IndexFromDate year out of range[{1},{2}]: {0}", year, min_year, max_year);
return 0;
}
return (year - startyear) * 12 + date.Month - 1 ;
}
private int IndexFromDateDescending(DateTime date)
{
int year = date.Year;
int min_year = startyear;
int max_year = endyear;
if (year < min_year || year > max_year) {
Log.DebugFormat ("TimeAdaptor.IndexFromPhoto year out of range[{1},{2}]: {0}", year, min_year, max_year);
return 0;
}
return 12 * (endyear - year) + 12 - date.Month;
}
public override FSpot.IBrowsableItem PhotoFromIndex (int item)
{
DateTime start = DateFromIndex (item);
return query [query.LookupItem (start)];
}
public override event ChangedHandler Changed;
uint timer;
protected override void Reload ()
{
timer = Log.DebugTimerStart ();
Thread reload = new Thread (new ThreadStart (DoReload));
reload.IsBackground = true;
reload.Priority = ThreadPriority.Lowest;
reload.Start ();
}
int startyear = Int32.MaxValue, endyear = Int32.MinValue;
void DoReload ()
{
Thread.Sleep (200);
Dictionary <int, int[]> years_tmp = query.Store.PhotosPerMonth ();
int startyear_tmp = Int32.MaxValue;
int endyear_tmp = Int32.MinValue;
foreach (int year in years_tmp.Keys) {
startyear_tmp = Math.Min (year, startyear_tmp);
endyear_tmp = Math.Max (year, endyear_tmp);
}
Gtk.Application.Invoke(delegate {
years = years_tmp;
startyear = startyear_tmp;
endyear = endyear_tmp;
if (Changed != null)
Changed (this);
});
Log.DebugTimerPrint (timer, "TimeAdaptor REAL Reload took {0}");
}
public TimeAdaptor (PhotoQuery query, bool order_ascending)
: base (query, order_ascending)
{ }
}
}
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