/// <summary>
/// Sets Index to that of the image whose progress is closest to sun's current
/// progress without exceeding it, and changes wallpaper to that image
///
/// Note: calling this method will "start" the scheduler if it isn't running
/// </summary>
private void SyncToSunProgress()
{
_timer.Enabled = false;
// TODO probably don't need this check, since we're checking for IsRunning == true before calling this
// from everywhere except DirPath_Change() (which only calls this if _wallpaper was created successfully)
if (_wallpaper == null)
{
Stop();
return;
}
// Set Index to that of the image whose progress is closest to sun's current progress without exceeding it
DateTime now = DateTime.Now;
double currentProgress = SunCalcHelper.GetSunProgress(now, _location.Latitude, _location.Longitude);
for (int i = 0; i < _wallpaper.Images.Count; i++)
{
double progress = _wallpaper.Images[i].Progress;
if (progress > currentProgress)
{
break;
}
Index = i;
}
// Change wallpaper immediately via _timer
_timer.Interval = 1;
_timer.Enabled = true;
}
public void Timer_Elapsed(Object source, ElapsedEventArgs e)
{
// Set wallpaper to the image at the current Index
string path = Path.Combine(_dirPath, _wallpaper.Images[Index].Name);
if (!File.Exists(path))
{
Console.Error.WriteLine($"File doesn't exist: {path}");
}
DesktopManager.SetDesktopWallpaper(path);
// Persist current wallpaper's path via Settings
Properties.Settings.Default.LastSetWallpaperPath = path;
Properties.Settings.Default.Save(); // persist settings across application sessions
// Schedule _timer to run when the sun reaches the next image's progress
Index = (Index + 1) % _wallpaper.Images.Count; // set Index to next image's index
DateTime changeTime = SunCalcHelper.GetNextTime(_wallpaper.Images[Index].Progress, DateTime.Now, _location.Latitude, _location.Longitude);
double interval = (changeTime.Ticks - DateTime.Now.Ticks) / TimeSpan.TicksPerMillisecond;
if (interval < 1)
{
interval = 1; // fire timer immediately if it should have fired in the past
}
_timer.Interval = interval;
IsRunning = true;
NextChangeTime = changeTime;
}
public void Location_Click()
{
// Show window to change location
ChangeLocationWindow w = new ChangeLocationWindow(Location.Latitude, Location.Longitude);
w.Owner = Application.Current.MainWindow;
w.ShowDialog();
// If user clicked Ok button (and input was validated)...
if (w.OkClicked)
{
// Verify user input won't crash app by checking if given location has all SunPhase entries
var phases = SunCalcHelper.GetSunPhases(DateTime.Now, w.Latitude, w.Longitude);
const int EXPECTED_NUM_SUNPHASES = 14;
if (phases.Count() != EXPECTED_NUM_SUNPHASES)
{
// User input an invalid location. Notify user
MessageBox.Show($"There's a problem with\n{w.Latitude}\u00B0N, {w.Longitude}\u00B0E");
return;
}
// No problem with user input
// Persist location values in settings
Properties.Settings.Default.Latitude = w.Latitude;
Properties.Settings.Default.Longitude = w.Longitude;
Properties.Settings.Default.Save();
// Set Location property (which updates _scheduler)
Location = new Location(w.Latitude, w.Longitude);
}
}
// Constructor
public SunInfoWindowViewModel()
{
// Initialize properties
Date = DateTime.Now;
_lat = Properties.Settings.Default.Latitude;
_lng = Properties.Settings.Default.Longitude;
Phases = SunCalcHelper.GetSunPhases(Date, _lat, _lng);
AverageProgresses = CalculateAverageProgresses();
}
private void Phases_Change(IEnumerable <SunCalcNet.Model.SunPhase> phases)
{
// Update TextBlocks
// time
DateTime sunrise = phases.First(phase => phase.Name.Value.Equals("Sunrise")).PhaseTime;
DateTime sunriseEnd = phases.First(phase => phase.Name.Value.Equals("Sunrise End")).PhaseTime;
DateTime goldenHourEnd = phases.First(phase => phase.Name.Value.Equals("Golden Hour End")).PhaseTime;
DateTime solarNoon = phases.First(phase => phase.Name.Value.Equals("Solar Noon")).PhaseTime;
DateTime goldenHour = phases.First(phase => phase.Name.Value.Equals("Golden Hour")).PhaseTime;
DateTime sunsetStart = phases.First(phase => phase.Name.Value.Equals("Sunset Start")).PhaseTime;
DateTime sunset = phases.First(phase => phase.Name.Value.Equals("Sunset")).PhaseTime;
DateTime dusk = phases.First(phase => phase.Name.Value.Equals("Dusk")).PhaseTime;
DateTime nauticalDusk = phases.First(phase => phase.Name.Value.Equals("Nautical Dusk")).PhaseTime;
DateTime night = phases.First(phase => phase.Name.Value.Equals("Night")).PhaseTime;
DateTime nadir = phases.First(phase => phase.Name.Value.Equals("Nadir")).PhaseTime;
DateTime nightEnd = phases.First(phase => phase.Name.Value.Equals("Night End")).PhaseTime;
DateTime nauticalDawn = phases.First(phase => phase.Name.Value.Equals("Nautical Dawn")).PhaseTime;
DateTime dawn = phases.First(phase => phase.Name.Value.Equals("Dawn")).PhaseTime;
string timeFormat = "h:mm:ss tt"; // e.g. "5:30:00 PM"
sunriseTimeTextBlock.Text = sunrise.ToString(timeFormat);
sunriseEndTimeTextBlock.Text = sunriseEnd.ToString(timeFormat);
goldenHourEndTimeTextBlock.Text = goldenHourEnd.ToString(timeFormat);
solarNoonTimeTextBlock.Text = solarNoon.ToString(timeFormat);
goldenHourTimeTextBlock.Text = goldenHour.ToString(timeFormat);
sunsetStartTimeTextBlock.Text = sunsetStart.ToString(timeFormat);
sunsetTimeTextBlock.Text = sunset.ToString(timeFormat);
duskTimeTextBlock.Text = dusk.ToString(timeFormat);
nauticalDuskTimeTextBlock.Text = nauticalDusk.ToString(timeFormat);
nightTimeTextBlock.Text = night.ToString(timeFormat);
nadirTimeTextBlock.Text = nadir.ToString(timeFormat);
nightEndTimeTextBlock.Text = nightEnd.ToString(timeFormat);
nauticalDawnTimeTextBlock.Text = nauticalDawn.ToString(timeFormat);
dawnTimeTextBlock.Text = dawn.ToString(timeFormat);
// progress
double lat = Properties.Settings.Default.Latitude;
double lng = Properties.Settings.Default.Longitude;
sunriseProgressTextBlock.Text = Math.Round(SunCalcHelper.GetSunProgress(sunrise, lat, lng), 2).ToString();
sunriseEndProgressTextBlock.Text = Math.Round(SunCalcHelper.GetSunProgress(sunriseEnd, lat, lng), 2).ToString();
goldenHourEndProgressTextBlock.Text = Math.Round(SunCalcHelper.GetSunProgress(goldenHourEnd, lat, lng), 2).ToString();
solarNoonProgressTextBlock.Text = Math.Round(SunCalcHelper.GetSunProgress(solarNoon, lat, lng), 2).ToString();
goldenHourProgressTextBlock.Text = Math.Round(SunCalcHelper.GetSunProgress(goldenHour, lat, lng), 2).ToString();
sunsetStartProgressTextBlock.Text = Math.Round(SunCalcHelper.GetSunProgress(sunsetStart, lat, lng), 2).ToString();
sunsetProgressTextBlock.Text = Math.Round(SunCalcHelper.GetSunProgress(sunset, lat, lng), 2).ToString();
duskProgressTextBlock.Text = Math.Round(SunCalcHelper.GetSunProgress(dusk, lat, lng), 2).ToString();
nauticalDuskProgressTextBlock.Text = Math.Round(SunCalcHelper.GetSunProgress(nauticalDusk, lat, lng), 2).ToString();
nightProgressTextBlock.Text = Math.Round(SunCalcHelper.GetSunProgress(night, lat, lng), 2).ToString();
nadirProgressTextBlock.Text = Math.Round(SunCalcHelper.GetSunProgress(nadir, lat, lng), 2).ToString();
nightEndProgressTextBlock.Text = Math.Round(SunCalcHelper.GetSunProgress(nightEnd, lat, lng), 2).ToString();
nauticalDawnProgressTextBlock.Text = Math.Round(SunCalcHelper.GetSunProgress(nauticalDawn, lat, lng), 2).ToString();
dawnProgressTextBlock.Text = Math.Round(SunCalcHelper.GetSunProgress(dawn, lat, lng), 2).ToString();
}
// Private methods
/// <summary>
/// Returns a Dictionary containing the average sun progress values for each SunPhase in the SunCalc library for the next year
/// </summary>
/// <returns></returns>
private Dictionary <string, double> CalculateAverageProgresses()
{
// Build a Dictionary that will contain progress totals for each SunPhase
Dictionary <string, double> progressTotals = new Dictionary <string, double>();
progressTotals.Add(SunCalcHelper.PHASE_NAME_SUNRISE, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_SUNRISE_END, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_GOLDEN_HOUR_END, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_SOLAR_NOON, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_GOLDEN_HOUR, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_SUNSET_START, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_SUNSET, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_DUSK, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_NAUTICAL_DUSK, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_NIGHT, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_NADIR, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_NIGHT_END, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_NAUTICAL_DAWN, 0);
progressTotals.Add(SunCalcHelper.PHASE_NAME_DAWN, 0);
// Build a List of DateTimes containing one DateTime per week for the next 52 weeks
List <DateTime> days = new List <DateTime>();
for (int week = 0; week < 52; week++)
{
days.Add(Date.AddDays(7 * week));
}
// Sum progresses for each Sunphase across all days
foreach (var day in days)
{
var phases = SunCalcHelper.GetSunPhases(day, _lat, _lng);
foreach (var phase in phases)
{
progressTotals[phase.Name.Value] += SunCalcHelper.GetSunProgress(phase.PhaseTime, _lat, _lng);
}
}
// Build a Dictionary of average progresses by dividing each entry in progressTotals by the number of elements in days
Dictionary <string, double> result = new Dictionary <string, double>();
foreach (KeyValuePair <string, double> entry in progressTotals)
{
double avg = progressTotals[entry.Key] / days.Count;
result.Add(entry.Key, avg);
}
return(result);
}