public void DrawWeather(WeatherRendererInfo info, SKCanvas canvas, int width, int height)
{
// background
using (var paint = new SKPaint())
{
var colors = new[] { WeatherColors.DarkBlue, WeatherColors.Orange };
var headerHeight = 84;
var shaderGradient = SKShader.CreateLinearGradient(new SKPoint(0, headerHeight), new SKPoint(0, height),
colors, null, SKShaderTileMode.Clamp);
var shaderNoise = SKShader.CreatePerlinNoiseTurbulence(0.99f, 0.99f, 1, 0.0f);
var shaderComp = SKShader.CreateCompose(shaderGradient, shaderNoise, SKXferMode.Multiply);
paint.Color = WeatherColors.DarkBlue;
paint.Shader = shaderComp;
// background
canvas.DrawRect(new SKRect(0, 0, width, height), paint);
// header background
var grad = WeatherBitmapCache.Get("gradient_orange.png");
canvas.DrawBitmap(grad, new SKRect(0, 0, width, headerHeight));
// top right cutout
paint.Shader = null;
using (var path = new SKPath())
{
var baseX = 180;
var slant = 80;
path.MoveTo(width - baseX, 0);
path.LineTo(width, 0);
path.LineTo(width, headerHeight);
path.LineTo(width - baseX - slant, headerHeight);
canvas.DrawPath(path, paint);
}
}
// ticker
using (var paint = new SKPaint())
{
var alertsActive = info.WeatherResponse.alerts?.Count > 0;
var rect = new SKRect(0, height - 100, width, height);
paint.Color = SKColors.Black;
canvas.DrawRect(rect, paint);
rect.Top += 2;
paint.Color = SKColors.Gray;
canvas.DrawRect(rect, paint);
rect.Top += 2;
paint.Color = alertsActive ? WeatherColors.Red : WeatherColors.Teal;
canvas.DrawRect(rect, paint);
paint.Color = SKColors.White;
paint.TextSize = 36;
paint.Typeface = WeatherTypeface.Standard;
string message;
if (alertsActive)
{
message = string.Join(", ", (from alert in info.WeatherResponse.alerts select alert.title));
}
else
{
var unit = info.Unit == Unit.us ? "F" : "C";
message =
$"Temp: {(int) info.WeatherResponse.currently.temperature}°{unit} Feels Like: {(int) info.WeatherResponse.currently.apparentTemperature}°{unit}";
}
DrawShadowedText(canvas, message, 5, height - 55, paint);
}
// logo
var logo = WeatherBitmapCache.Get("logo.png");
var imgRect = new SKRect(20, 5, 20 + logo.Width, 5 + logo.Height);
;
canvas.DrawBitmap(logo, imgRect);
// city name and extended forecast header text
using (var paint = new SKPaint())
{
paint.TextSize = 36.0f;
paint.Typeface = WeatherTypeface.Standard;
var baseX = 150.0f;
var baseY = 32.0f;
var baseYOff = 30.0f;
paint.Color = SKColors.White;
DrawShadowedText(canvas, info.Address, baseX, baseY, paint);
paint.Color = WeatherColors.Yellow;
DrawShadowedText(canvas, "Extended Forecast", baseX, baseY + baseYOff, paint);
}
// top right date and time
using (var paint = new SKPaint())
{
// TODO: this is probably not right. i have an offset but no clue what the best way is here
var now = DateTime.UtcNow + TimeSpan.FromHours(info.WeatherResponse.offset);
var topDateLine = now.ToString("h:mm:ss tt").ToUpper();
var bottomDateLine = now.ToString("ddd MMM d").ToUpper();
var baseX = width - 280.0f;
var baseY = 45;
paint.Typeface = WeatherTypeface.Small;
paint.TextSize = 36;
paint.Color = SKColors.LightGray;
DrawShadowedText(canvas, topDateLine, baseX, baseY, paint);
DrawShadowedText(canvas, bottomDateLine, baseX, baseY + 20, paint);
}
for (var i = 0; i < 4; i++)
{
var boxWidth = 220;
var boxOffset = width / 4;
DrawForecast(canvas, new SKRect(i * boxOffset + 10, 90, i * boxOffset + boxWidth, height - 90 - 20),
info.WeatherResponse.daily.data[i]);
}
}
private void DrawForecast(SKCanvas canvas, SKRect rect, DailyForecast forecast)
{
// background
using (var paint = new SKPaint())
{
var colors = new[] { WeatherColors.LightBlue, WeatherColors.Blue };
paint.Color = SKColors.Black;
canvas.DrawRect(rect, paint);
rect = new SKRect(rect.Left + 2, rect.Top + 2, rect.Right - 2, rect.Bottom - 2);
paint.Color = SKColors.Gray;
canvas.DrawRect(rect, paint);
rect = new SKRect(rect.Left + 4, rect.Top + 4, rect.Right - 4, rect.Bottom - 4);
paint.Color = SKColors.Black;
canvas.DrawRect(rect, paint);
rect = new SKRect(rect.Left + 2, rect.Top + 2, rect.Right - 2, rect.Bottom - 2);
var grad = WeatherBitmapCache.Get("gradient.png");
canvas.DrawBitmap(grad, rect);
}
var w = (rect.Right - rect.Left);
// day of week
using (var paint = new SKPaint())
{
paint.Color = WeatherColors.Yellow;
paint.TextSize = 36;
paint.Typeface = WeatherTypeface.Standard;
paint.TextAlign = SKTextAlign.Center;
var forecastTime =
new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc).AddSeconds(forecast.time).ToLocalTime();
DrawShadowedText(canvas, forecastTime.ToString("ddd").ToUpper(), rect.Left + w / 2, rect.Top + 30, paint);
}
// forecast icon
var icon = WeatherBitmapCache.Get($"{forecast.icon}.gif");
var paddingW = (w - icon.Width) / 2;
var paddingH = (128 - icon.Height) / 2;
var imgRect = new SKRect(rect.Left + paddingW, 140 + paddingH, rect.Right - paddingW,
140 + 128 - paddingH);
canvas.DrawBitmap(icon, imgRect);
// hi/lo
using (var paint = new SKPaint())
{
paint.TextSize = 36;
paint.Typeface = WeatherTypeface.Standard;
paint.TextAlign = SKTextAlign.Center;
paint.Color = WeatherColors.TealAlso;
DrawShadowedText(canvas, "Lo", rect.Left + w / 4, rect.Bottom - 50, paint);
paint.Color = WeatherColors.Yellow;
DrawShadowedText(canvas, "Hi", rect.Left + (w / 4) * 3, rect.Bottom - 50, paint);
paint.Color = SKColors.White;
paint.Typeface = WeatherTypeface.Large;
paint.TextSize = 32;
DrawShadowedText(canvas, $"{Math.Round(forecast.temperatureMin)}", rect.Left + w / 4, rect.Bottom - 5,
paint);
DrawShadowedText(canvas, $"{Math.Round(forecast.temperatureMax)}", rect.Left + (w / 4) * 3, rect.Bottom - 5,
paint);
}
// condition
using (var paint = new SKPaint())
{
paint.Color = SKColors.White;
paint.TextSize = 36;
paint.Typeface = WeatherTypeface.Standard;
paint.TextAlign = SKTextAlign.Center;
var description = forecast.icon.Split('-');
DrawShadowedText(canvas, TextUtils.UppercaseFirst(description[0]), rect.Left + w / 2,
rect.Bottom - 110 - 50, paint);
if (description.Length >= 2)
{
DrawShadowedText(canvas, TextUtils.UppercaseFirst(description[1]), rect.Left + w / 2,
rect.Bottom - 110,
paint);
}
}
}
