public object ProvideValue(IServiceProvider serviceProvider)
{
ImageSource result = null;
if (Source != null)
{
IResourceLocator resLocator = Mvx.IoCProvider.Resolve <IResourceLocator>();
if (resLocator == null || resLocator.ResourcesAssembly == null || !resLocator.HasPath(ResourceKeys.ImagesKey))
{
Debug.WriteLine("Resource info not set for images");
}
else
{
string resourceFullName = resLocator.GetResourcePath(ResourceKeys.ImagesKey, Source);
#if DEBUG
string[] assemblyResourceNames = resLocator.ResourcesAssembly.GetManifestResourceNames();
if (!assemblyResourceNames.Contains(resourceFullName))
{
Debug.WriteLine($"Trying to bind image from resource {resourceFullName}, but it wasn't found in asembly {resLocator.ResourcesAssembly.FullName}");
}
#endif
try
{
result = ImageSource.FromResource(resourceFullName, resLocator.ResourcesAssembly);
}
catch (Exception)
{
// Simply return null for unfound resources
}
}
}
return(result);
}
public override void DrawOnMap(SKMapCanvas canvas, SKMapSpan canvasMapRect, double zoomScale)
{
SKPaint paint = new SKPaint();
paint.IsAntialias = true;
paint.StrokeWidth = 1;
paint.Color = Color.Fuchsia.ToSKColor();
if (canvasMapRect.Center.Latitude > 0)
{
canvas.DrawLine(new Position(canvasMapRect.Center.Latitude + canvasMapRect.LatitudeDegrees, canvasMapRect.Center.Longitude),
new Position(canvasMapRect.Center.Latitude - canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude + canvasMapRect.LongitudeDegrees),
paint);
canvas.DrawLine(new Position(canvasMapRect.Center.Latitude - canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude + canvasMapRect.LongitudeDegrees),
new Position(canvasMapRect.Center.Latitude - canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude - canvasMapRect.LongitudeDegrees),
paint);
canvas.DrawLine(new Position(canvasMapRect.Center.Latitude - canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude - canvasMapRect.LongitudeDegrees),
new Position(canvasMapRect.Center.Latitude + canvasMapRect.LatitudeDegrees, canvasMapRect.Center.Longitude),
paint);
}
else
{
canvas.DrawLine(new Position(canvasMapRect.Center.Latitude - canvasMapRect.LatitudeDegrees, canvasMapRect.Center.Longitude),
new Position(canvasMapRect.Center.Latitude + canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude + canvasMapRect.LongitudeDegrees),
paint);
canvas.DrawLine(new Position(canvasMapRect.Center.Latitude + canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude + canvasMapRect.LongitudeDegrees),
new Position(canvasMapRect.Center.Latitude + canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude - canvasMapRect.LongitudeDegrees),
paint);
canvas.DrawLine(new Position(canvasMapRect.Center.Latitude + canvasMapRect.LatitudeDegrees,
canvasMapRect.Center.Longitude - canvasMapRect.LongitudeDegrees),
new Position(canvasMapRect.Center.Latitude - canvasMapRect.LatitudeDegrees, canvasMapRect.Center.Longitude),
paint);
}
paint.Style = SKPaintStyle.Stroke;
paint.StrokeWidth = 10;
paint.StrokeCap = SKStrokeCap.Round;
paint.StrokeJoin = SKStrokeJoin.Round;
paint.Color = Color.Red.ToSKColor();
SKMapPath zonePath = canvas.CreateEmptyMapPath();
zonePath.MoveTo((float)(baseBounds.Center.Latitude - baseBounds.LatitudeDegrees), (float)baseBounds.Center.Longitude);
zonePath.LineTo((float)(baseBounds.Center.Latitude + baseBounds.LatitudeDegrees), (float)(baseBounds.Center.Longitude + baseBounds.LongitudeDegrees));
zonePath.LineTo((float)(baseBounds.Center.Latitude + baseBounds.LatitudeDegrees), (float)(baseBounds.Center.Longitude - baseBounds.LongitudeDegrees));
zonePath.Close();
canvas.DrawPath(zonePath, paint);
paint.Color = Color.Green.MultiplyAlpha(0.5).ToSKColor();
Size currentScaleStrokeArea = SKMapCanvas.PixelsToMapSizeAtScale(new Size(5, 5), baseBounds.Center, zoomScale);
MapSpan insetBounds = new MapSpan(baseBounds.Center,
baseBounds.LatitudeDegrees - currentScaleStrokeArea.Height,
baseBounds.LongitudeDegrees - currentScaleStrokeArea.Width);
canvas.DrawRect(insetBounds, paint);
paint.StrokeWidth = 1;
paint.Color = Color.Black.ToSKColor();
canvas.DrawRect(baseBounds, paint);
paint.Color = Color.Black.ToSKColor();
canvas.DrawRect(GpsBounds, paint);
IResourceLocator resLocator = Mvx.IoCProvider.Resolve <IResourceLocator>();
string resPath = resLocator.GetResourcePath(ResourceKeys.ImagesKey, "symbol_logo.svg");
SKSvg logoSvg = new SKSvg();
logoSvg.Load(resLocator.ResourcesAssembly.GetManifestResourceStream(resPath));
canvas.DrawPicture(logoSvg.Picture, baseBounds.Center, new Size(100, 100));
}