public MemoryStream RenderWeatherImage(WeatherRendererInfo info)
{
MemoryStream output = new MemoryStream();
using (Image <Rgba32> image = images["background"].Clone())
{
var now = info.Date;
var topDateLine = now.ToString("h:mm:ss tt", CultureInfo.CurrentCulture).ToUpper();
var bottomDateLine = now.ToString("ddd MMM d", CultureInfo.CurrentCulture).ToUpper();
var tickerLine = info.Alert != null ? info.Alert + "\n" : "";
tickerLine +=
$"Temp: {(int)info.Temperature}°{info.Unit} Feels Like: {(int)info.FeelsLike}°{info.Unit}";
if (info.Alert != null)
{
image.Mutate(i => i.Fill <Rgba32>(WeatherColors.Red, new Rectangle(0, 480, image.Width, 96)));
}
// everything except the forecast
var cmds = new List <DrawCommand>
{
new DrawCommand()
{
Text = info.Address,
Font = mdFont,
X = 150,
Y = 8,
Color = WeatherColors.White
},
new DrawCommand()
{
Text = "Extended Forecast",
Font = mdFont,
IsRelative = true,
X = 0,
Y = 36,
Color = WeatherColors.Yellow
},
new DrawCommand()
{
Text = topDateLine, Font = smFont, X = 695, Y = 12, Color = WeatherColors.White
},
new DrawCommand()
{
Text = bottomDateLine,
Font = smFont,
IsRelative = true,
X = 0,
Y = 25,
Color = WeatherColors.White
},
new DrawCommand()
{
Text = tickerLine, Font = mdFont, X = 5, Y = 485, Color = WeatherColors.White
},
};
int bx = 15, by = 90;
foreach (var day in info.Forecast)
{
cmds.AddRange(new List <DrawCommand>
{
new DrawCommand()
{
X = bx, Y = by
},
// day of week, icon, summary
new DrawCommand()
{
Text = day.Date.ToString("ddd", CultureInfo.CurrentCulture).ToUpper(),
HorizontalAlignment = HorizontalAlignment.Center,
VerticalAlignment = VerticalAlignment.Center,
IsRelative = true,
X = 100,
Y = 30,
Font = mdFont,
Color = WeatherColors.Yellow
},
new DrawCommand()
{
Image = images.ContainsKey(day.Icon) ? images[day.Icon] : images["clear-day"],
HorizontalAlignment = HorizontalAlignment.Center,
ContentWidth = 190,
IsRelative = true,
X = -90,
Y = 40
},
new DrawCommand()
{
Text = day.Summary,
HorizontalAlignment = HorizontalAlignment.Center,
VerticalAlignment = VerticalAlignment.Center,
IsRelative = true,
X = 90,
Y = 150,
Font = mdFont,
Color = WeatherColors.White
},
// low temperature
new DrawCommand()
{
Text = "Lo",
HorizontalAlignment = HorizontalAlignment.Center,
VerticalAlignment = VerticalAlignment.Center,
IsRelative = true,
X = -50,
Y = 75,
Font = mdFont,
Color = WeatherColors.TealAlso
},
new DrawCommand()
{
Text = day.LoTemp != null ? Math.Round(day.LoTemp.Value, 0).ToString() : "",
HorizontalAlignment = HorizontalAlignment.Center,
VerticalAlignment = VerticalAlignment.Center,
IsRelative = true,
X = 0,
Y = 50,
Font = lgFont,
Color = WeatherColors.White
},
// high temperature
new DrawCommand()
{
Text = "Hi",
HorizontalAlignment = HorizontalAlignment.Center,
VerticalAlignment = VerticalAlignment.Center,
IsRelative = true,
X = 100,
Y = -50,
Font = mdFont,
Color = WeatherColors.Yellow
},
new DrawCommand()
{
Text = day.HiTemp != null ? Math.Round(day.HiTemp.Value, 0).ToString() : "",
HorizontalAlignment = HorizontalAlignment.Center,
VerticalAlignment = VerticalAlignment.Center,
IsRelative = true,
X = 0,
Y = 50,
Font = lgFont,
Color = WeatherColors.White
},
});
bx += 244;
}
int x = 0, y = 0;
foreach (var cmd in cmds)
{
// reset the position if it's not relative
if (cmd.IsRelative)
{
x += cmd.X;
y += cmd.Y;
}
else
{
x = cmd.X;
y = cmd.Y;
}
// if we have a text object, use textalignment, color, and text fields
if (cmd.Text != null)
{
var textOpts = new TextGraphicsOptions(false)
{
HorizontalAlignment = cmd.HorizontalAlignment, VerticalAlignment = cmd.VerticalAlignment
};
image.Mutate(i => i.DrawText(textOpts, cmd.Text, cmd.Font, WeatherColors.Black, new Vector2(x + 2, y + 2)));
image.Mutate(i => i.DrawText(textOpts, cmd.Text, cmd.Font, cmd.Color, new Vector2(x, y)));
}
// if we have an image object, use the image field
if (cmd.Image != null)
{
Point pos = new Point(x, y);
if (cmd.ContentWidth > 0 && cmd.HorizontalAlignment == HorizontalAlignment.Center)
{
pos.X += (cmd.ContentWidth - cmd.Image.Width) / 2;
}
image.Mutate(i => i.DrawImage(cmd.Image, PixelBlenderMode.Normal, 1.0f, pos));
}
}
image.SaveAsPng(output);
}
output.Seek(0, SeekOrigin.Begin);
return(output);
}
// only get the data here, buddy
public async Task <WeatherRendererInfo> GetForecastAsync(string query)
{
// use google to get address, lat, and lng for a human-entered string
Location location;
try
{
IGeocoder geocoder = new BingMapsGeocoder(bingApiKey);
var geoResult = await geocoder.GeocodeAsync(query);
dynamic address = geoResult.FirstOrDefault();
if (address == null)
{
return(null);
}
location = new Location
{
Latitude = address.Coordinates.Latitude,
Longitude = address.Coordinates.Longitude,
FormattedAddress = address.FormattedAddress
};
if (address.Type.ToString().StartsWith("Postcode"))
{
location.FormattedAddress = $"{address.Locality} {address.FormattedAddress}";
}
}
catch (Exception)
{
return(null);
}
// request darksky without minutely/hourly, and use location to determine units
var WeatherService = new DarkSkyService(darkSkyApiKey);
DarkSkyResponse forecast = await WeatherService.GetForecast(location.Latitude, location.Longitude,
new DarkSkyService.OptionalParameters
{
DataBlocksToExclude = new List <ExclusionBlock> {
ExclusionBlock.Minutely, ExclusionBlock.Hourly,
},
MeasurementUnits = "auto"
});
var timezone = DateTimeZoneProviders.Tzdb[forecast.Response.TimeZone];
var myTime = SystemClock.Instance.GetCurrentInstant();
var info = new WeatherRendererInfo()
{
Address = location.FormattedAddress,
Unit = forecast.Response.Flags.Units == "us" ? "F" : "C",
Date = myTime.InZone(timezone),
Temperature = forecast.Response.Currently.Temperature,
FeelsLike = forecast.Response.Currently.ApparentTemperature,
Alert = forecast.Response.Alerts?[0].Title
};
int counter = 0;
foreach (var day in forecast.Response.Daily.Data.Take(4))
{
var dayRender = new WeatherRendererDay()
{
HiTemp = day.TemperatureHigh,
LoTemp = day.TemperatureLow,
Summary = weatherDescription.ContainsKey(day.Icon.ToString())
? weatherDescription[day.Icon.ToString()]
: day.Icon.ToString().Replace("-", ""),
Icon = string.Join("-", Regex.Split(day.Icon.ToString(), @"(?<!^)(?=[A-Z])")).ToLower(),
Date = info.Date.Plus(Duration.FromDays(counter))
};
info.Forecast.Add(dayRender);
counter++;
}
return(info);
}
