public Task <IBitmap> LoadFromResource(string source, float?desiredWidth, float?desiredHeight)
{
var tcs = new TaskCompletionSource <IBitmap>();
UIApplication.SharedApplication.InvokeOnMainThread(() => {
try {
#if UIKIT
var bitmap = UIImage.FromBundle(source);
#else
var bitmap = UIImage.ImageNamed(source);
#endif
if (bitmap == null)
{
throw new Exception("Failed to load image from resource: " + source);
}
tcs.TrySetResult(new CocoaBitmap(bitmap));
} catch (Exception ex) {
tcs.TrySetException(ex);
}
});
return(tcs.Task);
}
private async Task <DataResolverResult> ResolveFromNamedResourceAsync(string fileName, string identifier, TaskParameter parameters, CancellationToken token)
{
PImage image = null;
try
{
#if __IOS__ || __TVOS__
await ImageService.Instance.Config.MainThreadDispatcher.PostAsync(() => image = PImage.FromBundle(identifier)).ConfigureAwait(false);
#elif __MACOS__
await ImageService.Instance.Config.MainThreadDispatcher.PostAsync(() => image = PImage.ImageNamed(identifier)).ConfigureAwait(false);
#endif
}
catch { }
if (image == null && fileName != identifier)
{
try
{
#if __IOS__ || __TVOS__
await ImageService.Instance.Config.MainThreadDispatcher.PostAsync(() => image = PImage.FromBundle(fileName)).ConfigureAwait(false);
#elif __MACOS__
await ImageService.Instance.Config.MainThreadDispatcher.PostAsync(() => image = PImage.ImageNamed(fileName)).ConfigureAwait(false);
#endif
}
catch { }
}
if (image != null)
{
token.ThrowIfCancellationRequested();
var imageInformation = new ImageInformation();
imageInformation.SetPath(identifier);
imageInformation.SetFilePath(null);
var container = new DecodedImage <object>()
{
Image = image
};
var result = new DataResolverResult(container, LoadingResult.CompiledResource, imageInformation);
return(result);
}
return(null);
}
public virtual async Task <Tuple <Stream, LoadingResult, ImageInformation> > Resolve(string identifier, TaskParameter parameters, CancellationToken token)
{
NSBundle bundle = null;
var filename = Path.GetFileNameWithoutExtension(identifier);
var tmpPath = Path.GetDirectoryName(identifier).Trim('/');
var filenamePath = string.IsNullOrWhiteSpace(tmpPath) ? null : tmpPath + "/";
foreach (var fileType in fileTypes)
{
string file = null;
var extension = Path.HasExtension(identifier) ? Path.GetExtension(identifier) : string.IsNullOrWhiteSpace(fileType) ? string.Empty : "." + fileType;
token.ThrowIfCancellationRequested();
int scale = (int)ScaleHelper.Scale;
if (scale > 1)
{
while (scale > 1)
{
token.ThrowIfCancellationRequested();
var tmpFile = string.Format("{0}@{1}x{2}", filename, scale, extension);
bundle = NSBundle._AllBundles.FirstOrDefault(bu =>
{
var path = string.IsNullOrWhiteSpace(filenamePath) ?
bu.PathForResource(tmpFile, null) :
bu.PathForResource(tmpFile, null, filenamePath);
return(!string.IsNullOrWhiteSpace(path));
});
if (bundle != null)
{
file = tmpFile;
break;
}
scale--;
}
}
token.ThrowIfCancellationRequested();
if (file == null)
{
var tmpFile = string.Format(filename + extension);
file = tmpFile;
bundle = NSBundle._AllBundles.FirstOrDefault(bu =>
{
var path = string.IsNullOrWhiteSpace(filenamePath) ?
bu.PathForResource(tmpFile, null) :
bu.PathForResource(tmpFile, null, filenamePath);
return(!string.IsNullOrWhiteSpace(path));
});
}
token.ThrowIfCancellationRequested();
if (bundle != null)
{
string path = !string.IsNullOrEmpty(filenamePath) ? bundle.PathForResource(file, null, filenamePath) : bundle.PathForResource(file, null);
var stream = FileStore.GetInputStream(path, true);
var imageInformation = new ImageInformation();
imageInformation.SetPath(identifier);
imageInformation.SetFilePath(path);
return(new Tuple <Stream, LoadingResult, ImageInformation>(
stream, LoadingResult.CompiledResource, imageInformation));
}
token.ThrowIfCancellationRequested();
if (string.IsNullOrEmpty(fileType))
{
//Asset catalog
bool tryAssetsCatalog = true;
#if __IOS__
if (!UIDevice.CurrentDevice.CheckSystemVersion(9, 0))
{
tryAssetsCatalog = false;
}
#endif
if (tryAssetsCatalog)
{
NSDataAsset asset = null;
try
{
await ImageService.Instance.Config.MainThreadDispatcher.PostAsync(() => asset = new NSDataAsset(filename)).ConfigureAwait(false);
}
catch (Exception) { }
if (asset != null)
{
token.ThrowIfCancellationRequested();
var stream = asset.Data?.AsStream();
var imageInformation = new ImageInformation();
imageInformation.SetPath(identifier);
imageInformation.SetFilePath(null);
return(new Tuple <Stream, LoadingResult, ImageInformation>(
stream, LoadingResult.CompiledResource, imageInformation));
}
}
PImage image = null;
try
{
#if __IOS__
await ImageService.Instance.Config.MainThreadDispatcher.PostAsync(() => image = PImage.FromBundle(filename)).ConfigureAwait(false);
#elif __MACOS__
await ImageService.Instance.Config.MainThreadDispatcher.PostAsync(() => image = NSImage.ImageNamed(filename)).ConfigureAwait(false);
#endif
}
catch (Exception) { }
if (image != null)
{
token.ThrowIfCancellationRequested();
var stream = image.AsPngStream();
var imageInformation = new ImageInformation();
imageInformation.SetPath(identifier);
imageInformation.SetFilePath(null);
return(new Tuple <Stream, LoadingResult, ImageInformation>(
stream, LoadingResult.CompiledResource, imageInformation));
}
}
}
throw new FileNotFoundException(identifier);
}