public async virtual Task<Tuple<Stream, LoadingResult, ImageInformation>> Resolve(string identifier, TaskParameter parameters, CancellationToken token)
{
StorageFile file = null;
try
{
var filePath = Path.GetDirectoryName(identifier);
if (!string.IsNullOrWhiteSpace(filePath))
{
file = await StorageFile.GetFileFromPathAsync(identifier);
}
}
catch (Exception)
{
}
if (file != null)
{
var imageInformation = new ImageInformation();
imageInformation.SetPath(identifier);
imageInformation.SetFilePath(identifier);
token.ThrowIfCancellationRequested();
var stream = await file.OpenStreamForReadAsync();
return new Tuple<Stream, LoadingResult, ImageInformation>(stream, LoadingResult.Disk, imageInformation);
}
throw new FileNotFoundException(identifier);
}
public virtual Task<Tuple<Stream, LoadingResult, ImageInformation>> Resolve(string identifier, TaskParameter parameters, CancellationToken token)
{
// Resource name is always without extension
string resourceName = Path.GetFileNameWithoutExtension(identifier);
int resourceId = 0;
if (!_resourceIdentifiersCache.TryGetValue(resourceName, out resourceId))
{
token.ThrowIfCancellationRequested();
resourceId = Context.Resources.GetIdentifier(resourceName.ToLower(), "drawable", Context.PackageName);
_resourceIdentifiersCache.TryAdd(resourceName.ToLower(), resourceId);
}
if (resourceId == 0)
throw new FileNotFoundException(identifier);
token.ThrowIfCancellationRequested();
Stream stream = Context.Resources.OpenRawResource(resourceId);
if (stream == null)
throw new FileNotFoundException(identifier);
var imageInformation = new ImageInformation();
imageInformation.SetPath(identifier);
imageInformation.SetFilePath(identifier);
return Task.FromResult(new Tuple<Stream, LoadingResult, ImageInformation>(
stream, LoadingResult.CompiledResource, imageInformation));
}
protected ImageLoaderTaskBase(IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, bool clearCacheOnOutOfMemory, bool verboseLoadingCancelledLogging)
{
_verboseLoadingCancelledLogging = verboseLoadingCancelledLogging;
_clearCacheOnOutOfMemory = clearCacheOnOutOfMemory;
CancellationToken = new CancellationTokenSource();
Parameters = parameters;
NumberOfRetryNeeded = parameters.RetryCount;
MainThreadDispatcher = mainThreadDispatcher;
Logger = miniLogger;
ConfigureParameters();
_hasCustomCacheKey = !string.IsNullOrWhiteSpace(Parameters.CustomCacheKey);
_keys = new ConcurrentDictionary<string, string>();
_transformationsKey = new Lazy<string>(() =>
{
if (Parameters.Transformations == null || Parameters.Transformations.Count == 0)
return string.Empty;
return ";" + string.Join(";", Parameters.Transformations.Select(t => t.Key));
});
_downsamplingKey = new Lazy<string>(() =>
{
if (Parameters.DownSampleSize == null)
return string.Empty;
return string.Concat(";", Parameters.DownSampleSize.Item1, "x", Parameters.DownSampleSize.Item2);
});
_rawKey = new Lazy<string>(() => GetKeyInternal(null, true));
_streamKey = new Lazy<string>(() => "Stream" + GetNextStreamIndex());
}
public async virtual Task<Tuple<Stream, LoadingResult, ImageInformation>> Resolve(string identifier, TaskParameter parameters, CancellationToken token)
{
var imageInformation = new ImageInformation();
var stream = await parameters.Stream?.Invoke(token);
return new Tuple<Stream, LoadingResult, ImageInformation>(stream, LoadingResult.Stream, imageInformation);
}
public ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, Func<UIView> getNativeControl, Action<UIImage, bool> doWithImage, nfloat imageScale)
: base(mainThreadDispatcher, miniLogger, parameters)
{
_getNativeControl = getNativeControl;
_doWithImage = doWithImage;
_imageScale = imageScale;
DownloadCache = downloadCache;
}
public ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, Func<Image> getNativeControl, Action<WriteableBitmap, bool> doWithImage)
: base(mainThreadDispatcher, miniLogger, parameters)
{
_getNativeControl = getNativeControl;
_doWithImage = doWithImage;
DownloadCache = downloadCache;
}
/// <summary>
/// Constructsa new TaskParameter to load an image from a file from application bundle.
/// </summary>
/// <param name="filepath">Path to the file.</param>
/// <returns>The new TaskParameter.</returns>
public static TaskParameter FromApplicationBundle(string filepath)
{
var taskParameter = new TaskParameter() { Source = ImageSource.ApplicationBundle, Path = filepath };
if (!taskParameter.Priority.HasValue)
taskParameter.Priority = (int)LoadingPriority.Normal + 1;
return taskParameter;
}
/// <summary>
/// Constructs a new TaskParameter to load an image from a compiled drawable resource.
/// </summary>
/// <returns>The new TaskParameter.</returns>
/// <param name="resourceName">Name of the resource in drawable folder without extension</param>
public static TaskParameter FromCompiledResource(string resourceName)
{
var taskParameter = new TaskParameter() { Source = ImageSource.CompiledResource, Path = resourceName };
if (!taskParameter.Priority.HasValue)
taskParameter.Priority = (int)LoadingPriority.Normal + 1;
return taskParameter;
}
public ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, nfloat imageScale, ITarget<UIImage, ImageLoaderTask> target, bool clearCacheOnOutOfMemory)
: base(mainThreadDispatcher, miniLogger, parameters, true, clearCacheOnOutOfMemory)
{
if (target == null)
throw new ArgumentNullException(nameof(target));
_target = target;
DownloadCache = downloadCache;
}
protected ImageLoaderTaskBase(IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters)
{
CancellationToken = new CancellationTokenSource();
Parameters = parameters;
NumberOfRetryNeeded = parameters.RetryCount;
MainThreadDispatcher = mainThreadDispatcher;
Logger = miniLogger;
ConfigureParameters();
}
public ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, ImageView imageView)
: base(mainThreadDispatcher, miniLogger, parameters, true)
{
DownloadCache = downloadCache;
if (imageView != null)
{
_imageWeakReference = new WeakReference<ImageView>(imageView);
}
}
public ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, ImageView imageView)
: base(mainThreadDispatcher, miniLogger, parameters)
{
CancellationToken = new CancellationTokenSource();
Context = Android.App.Application.Context.ApplicationContext;
DownloadCache = downloadCache;
_imageWeakReference = new WeakReference<ImageView>(imageView);
UseFadeInBitmap = true;
}
public virtual Task<Tuple<Stream, LoadingResult, ImageInformation>> Resolve(string identifier, TaskParameter parameters, CancellationToken token)
{
string file = null;
int scale = (int)ScaleHelper.Scale;
if (scale > 1)
{
var filename = Path.GetFileNameWithoutExtension(identifier);
var extension = Path.GetExtension(identifier);
const string pattern = "{0}@{1}x{2}";
while (scale > 1)
{
token.ThrowIfCancellationRequested();
var tmpFile = string.Format(pattern, filename, scale, extension);
if (FileStore.Exists(tmpFile))
{
file = tmpFile;
break;
}
scale--;
}
}
if (string.IsNullOrEmpty(file) && FileStore.Exists(identifier))
{
file = identifier;
}
token.ThrowIfCancellationRequested();
if (!string.IsNullOrEmpty(file))
{
var stream = FileStore.GetInputStream(file, true);
var imageInformation = new ImageInformation();
imageInformation.SetPath(identifier);
imageInformation.SetFilePath(file);
var result = (LoadingResult)(int)parameters.Source;
if (parameters.LoadingPlaceholderPath == identifier)
result = (LoadingResult)(int)parameters.LoadingPlaceholderSource;
else if (parameters.ErrorPlaceholderPath == identifier)
result = (LoadingResult)(int)parameters.ErrorPlaceholderSource;
return Task.FromResult(new Tuple<Stream, LoadingResult, ImageInformation>(
stream, result, imageInformation));
}
throw new FileNotFoundException(identifier);
}
public static IDataResolver GetResolver(ImageSource source, TaskParameter parameter, IDownloadCache downloadCache)
{
switch (source)
{
case ImageSource.ApplicationBundle:
case ImageSource.CompiledResource:
case ImageSource.Filepath:
return new FilePathDataResolver(source);
case ImageSource.Url:
return new UrlDataResolver(parameter, downloadCache);
default:
throw new ArgumentException("Unknown type of ImageSource");
}
}
public virtual Task<Tuple<Stream, LoadingResult, ImageInformation>> Resolve(string identifier, TaskParameter parameters, CancellationToken token)
{
token.ThrowIfCancellationRequested();
var stream = Context.Assets.Open(identifier, Access.Streaming);
if (stream == null)
throw new FileNotFoundException(identifier);
var imageInformation = new ImageInformation();
imageInformation.SetPath(identifier);
imageInformation.SetFilePath(null);
return Task.FromResult(new Tuple<Stream, LoadingResult, ImageInformation>(
stream, LoadingResult.ApplicationBundle, imageInformation));
}
public virtual async Task<CacheStream> DownloadAndCacheIfNeededAsync(string url, TaskParameter parameters, Configuration configuration, CancellationToken token)
{
var allowCustomKey = !string.IsNullOrWhiteSpace(parameters.CustomCacheKey)
&& (string.IsNullOrWhiteSpace(parameters.LoadingPlaceholderPath) || parameters.LoadingPlaceholderPath != url)
&& (string.IsNullOrWhiteSpace(parameters.ErrorPlaceholderPath) || parameters.ErrorPlaceholderPath != url);
string filename = (allowCustomKey ? MD5Helper.MD5(parameters.CustomCacheKey) : MD5Helper.MD5(url))?.ToSanitizedKey();
var allowDiskCaching = AllowDiskCaching(parameters.CacheType);
var duration = parameters.CacheDuration.HasValue ? parameters.CacheDuration.Value : configuration.DiskCacheDuration;
string filePath = null;
if (allowDiskCaching)
{
var diskStream = await configuration.DiskCache.TryGetStreamAsync(filename).ConfigureAwait(false);
if (diskStream != null)
{
token.ThrowIfCancellationRequested();
filePath = await configuration.DiskCache.GetFilePathAsync(filename).ConfigureAwait(false);
return new CacheStream(diskStream, true, filePath);
}
}
token.ThrowIfCancellationRequested();
var downloadInfo = new DownloadInformation(url, parameters.CustomCacheKey, filename, allowDiskCaching, duration);
parameters.OnDownloadStarted?.Invoke(downloadInfo);
var responseBytes = await Retry.DoAsync(
async () => await DownloadAsync(url, token, configuration.HttpClient).ConfigureAwait(false),
DelayBetweenRetry,
parameters.RetryCount,
() => configuration.Logger.Debug(string.Format("Retry download: {0}", url)));
if (responseBytes == null)
throw new HttpRequestException("No Content");
if (allowDiskCaching)
{
await configuration.DiskCache.AddToSavingQueueIfNotExistsAsync(filename, responseBytes, duration).ConfigureAwait(false);
}
token.ThrowIfCancellationRequested();
filePath = await configuration.DiskCache.GetFilePathAsync(filename).ConfigureAwait(false);
token.ThrowIfCancellationRequested();
var memoryStream = new MemoryStream(responseBytes, false);
return new CacheStream(memoryStream, false, filePath);
}
public async virtual Task<Tuple<Stream, LoadingResult, ImageInformation>> Resolve(string identifier, TaskParameter parameters, CancellationToken token)
{
var downloadedData = await DownloadCache.DownloadAndCacheIfNeededAsync(identifier, parameters, Configuration, token).ConfigureAwait(false);
if (token.IsCancellationRequested)
{
downloadedData?.ImageStream?.Dispose();
token.ThrowIfCancellationRequested();
}
var imageInformation = new ImageInformation();
imageInformation.SetPath(identifier);
imageInformation.SetFilePath(downloadedData?.FilePath);
return new Tuple<Stream, LoadingResult, ImageInformation>(
downloadedData?.ImageStream, downloadedData.RetrievedFromDiskCache ? LoadingResult.DiskCache : LoadingResult.Internet, imageInformation);
}
public virtual IDataResolver GetResolver(string identifier, ImageSource source, TaskParameter parameters, Configuration configuration)
{
switch (source)
{
case ImageSource.ApplicationBundle:
case ImageSource.CompiledResource:
return new ResourceDataResolver();
case ImageSource.Filepath:
return new FileDataResolver();
case ImageSource.Url:
return new UrlDataResolver(configuration);
case ImageSource.Stream:
return new StreamDataResolver();
default:
throw new ArgumentException("Unknown type of ImageSource");
}
}
public virtual Task<Tuple<Stream, LoadingResult, ImageInformation>> Resolve(string identifier, TaskParameter parameters, CancellationToken token)
{
if (!FileStore.Exists(identifier))
{
throw new FileNotFoundException(identifier);
}
token.ThrowIfCancellationRequested();
var stream = FileStore.GetInputStream(identifier, true);
var imageInformation = new ImageInformation();
imageInformation.SetPath(identifier);
imageInformation.SetFilePath(identifier);
return Task.FromResult(new Tuple<Stream, LoadingResult, ImageInformation>(
stream, LoadingResult.Disk, imageInformation));
}
public async virtual Task<Tuple<Stream, LoadingResult, ImageInformation>> Resolve(string identifier, TaskParameter parameters, CancellationToken token)
{
StorageFile file = null;
try
{
string resPath = identifier.TrimStart('\\', '/');
if (!resPath.StartsWith(@"Assets\") && !resPath.StartsWith("Assets/"))
{
resPath = @"Assets\" + resPath;
}
var imgUri = new Uri("ms-appx:///" + resPath);
file = await StorageFile.GetFileFromApplicationUriAsync(imgUri);
}
catch (Exception)
{
try
{
var imgUri = new Uri("ms-appx:///" + identifier);
file = await StorageFile.GetFileFromApplicationUriAsync(imgUri);
}
catch (Exception)
{
}
}
if (file != null)
{
var imageInformation = new ImageInformation();
imageInformation.SetPath(identifier);
imageInformation.SetFilePath(file.Path);
token.ThrowIfCancellationRequested();
var stream = await file.OpenStreamForReadAsync();
return new Tuple<Stream, LoadingResult, ImageInformation>(stream, LoadingResult.CompiledResource, imageInformation);
}
throw new FileNotFoundException(identifier);
}
public async Task<Tuple<Stream, LoadingResult, ImageInformation>> Resolve(string identifier, TaskParameter parameters, CancellationToken token)
{
ImageSource source = parameters.Source;
if (parameters.LoadingPlaceholderPath == identifier)
source = parameters.LoadingPlaceholderSource;
else if (parameters.ErrorPlaceholderPath == identifier)
source = parameters.ErrorPlaceholderSource;
var resolvedData = await Configuration.DataResolverFactory
.GetResolver(identifier, source, parameters, Configuration)
.Resolve(identifier, parameters, token);
if (resolvedData?.Item1 == null)
throw new FileNotFoundException(identifier);
var svg = new SKSvg()
{
ThrowOnUnsupportedElement = false,
};
SKPicture picture;
using (var svgStream = resolvedData.Item1)
{
picture = svg.Load(resolvedData?.Item1);
}
using (var bitmap = new SKBitmap(200, 200, true))
using (var canvas = new SKCanvas(bitmap))
{
float canvasMin = Math.Min(200, 200);
float svgMax = Math.Max(svg.Picture.Bounds.Width, svg.Picture.Bounds.Height);
float scale = canvasMin / svgMax;
var matrix = SKMatrix.MakeScale(scale, scale);
canvas.DrawPicture(picture, ref matrix);
using (var image = SKImage.FromBitmap(bitmap))
{
var stream = image.Encode()?.AsStream();
return new Tuple<Stream, LoadingResult, ImageInformation>(stream, resolvedData.Item2, resolvedData.Item3);
}
}
}
public virtual async Task<Tuple<Stream, LoadingResult, ImageInformation>> Resolve(string identifier, TaskParameter parameters, CancellationToken token)
{
NSBundle bundle = null;
string file = null;
var filename = Path.GetFileNameWithoutExtension(identifier);
var extension = Path.GetExtension(identifier);
const string pattern = "{0}@{1}x{2}";
foreach (var fileType in fileTypes)
{
token.ThrowIfCancellationRequested();
int scale = (int)ScaleHelper.Scale;
if (scale > 1)
{
while (scale > 1)
{
token.ThrowIfCancellationRequested();
var tmpFile = string.Format(pattern, filename, scale, extension);
bundle = NSBundle._AllBundles.FirstOrDefault(bu =>
{
var path = bu.PathForResource(tmpFile, fileType);
return !string.IsNullOrWhiteSpace(path);
});
if (bundle != null)
{
file = tmpFile;
break;
}
scale--;
}
}
token.ThrowIfCancellationRequested();
if (file == null)
{
file = identifier;
bundle = NSBundle._AllBundles.FirstOrDefault(bu =>
{
var path = bu.PathForResource(file, fileType);
return !string.IsNullOrWhiteSpace(path);
});
}
token.ThrowIfCancellationRequested();
if (bundle != null)
{
var path = bundle.PathForResource(file, fileType);
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);
}
}
//Asset catalog
token.ThrowIfCancellationRequested();
if (UIDevice.CurrentDevice.CheckSystemVersion(9, 0))
{
NSDataAsset asset = null;
try
{
await MainThreadDispatcher.Instance.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);
}
}
else if (UIDevice.CurrentDevice.CheckSystemVersion(7, 0))
{
UIImage image = null;
try
{
await MainThreadDispatcher.Instance.PostAsync(() => image = UIImage.FromBundle(filename)).ConfigureAwait(false);
}
catch (Exception) { }
if (image != null)
{
token.ThrowIfCancellationRequested();
var stream = image.AsPNG()?.AsStream();
var imageInformation = new ImageInformation();
imageInformation.SetPath(identifier);
imageInformation.SetFilePath(null);
return new Tuple<Stream, LoadingResult, ImageInformation>(
stream, LoadingResult.CompiledResource, imageInformation);
}
}
throw new FileNotFoundException(identifier);
}
public PlatformImageLoaderTask(ITarget <SharedEvasImage, TImageView> target, TaskParameter parameters, IImageService imageService) : base(EvasImageCache.Instance, target, parameters, imageService)
{
}
public PlatformImageLoaderTask(ITarget <WriteableBitmap, TImageView> target, TaskParameter parameters, IImageService imageService, Configuration configuration, IMainThreadDispatcher mainThreadDispatcher)
: base(ImageCache.Instance, configuration.DataResolverFactory ?? DataResolvers.DataResolverFactory.Instance, target, parameters, imageService, configuration, mainThreadDispatcher, false)
{
}
public ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, Func <Image> getNativeControl, Action <WriteableBitmap, bool, bool> doWithImage)
: base(mainThreadDispatcher, miniLogger, parameters, false)
{
_getNativeControl = getNativeControl;
_doWithImage = doWithImage;
DownloadCache = downloadCache;
}
/// <summary>
/// This constructor is useful for child classes only. It can help when having a totally different loading logic.
/// </summary>
/// <param name="miniLogger">Logger</param>
/// <param name="key">Key.</param>
/// <param name="imageView">Image view.</param>
protected ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, string key, ImageView imageView)
: this(downloadCache, mainThreadDispatcher, miniLogger, TaskParameter.FromFile(key), imageView)
{
}
public ImageLoaderTask(IMemoryCache <TImageContainer> memoryCache, IDataResolverFactory dataResolverFactory, ITarget <TImageContainer, TImageView> target, TaskParameter parameters, IImageService imageService, Configuration configuration, IMainThreadDispatcher mainThreadDispatcher, bool clearCacheOnOutOfMemory)
{
_clearCacheOnOutOfMemory = clearCacheOnOutOfMemory;
MemoryCache = memoryCache;
DataResolverFactory = dataResolverFactory;
PlatformTarget = target;
ImageService = imageService;
Configuration = configuration;
MainThreadDispatcher = mainThreadDispatcher;
Parameters = parameters;
CancellationTokenSource = new CancellationTokenSource();
ImageInformation = new ImageInformation();
CanUseMemoryCache = true;
SetKeys();
Target?.SetImageLoadingTask(this);
}
public ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, ITarget <BitmapDrawable, ImageLoaderTask> target)
: base(mainThreadDispatcher, miniLogger, parameters, true)
{
if (target == null)
{
throw new ArgumentNullException(nameof(target));
}
_target = target;
DownloadCache = downloadCache;
}
protected ImageLoaderTaskBase(IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, IDownloadCache downloadCache, bool clearCacheOnOutOfMemory, bool verboseLoadingCancelledLogging)
{
_verboseLoadingCancelledLogging = verboseLoadingCancelledLogging;
_clearCacheOnOutOfMemory = clearCacheOnOutOfMemory;
CancellationToken = new CancellationTokenSource();
DownloadCache = downloadCache;
Parameters = parameters;
NumberOfRetryNeeded = parameters.RetryCount;
MainThreadDispatcher = mainThreadDispatcher;
Logger = miniLogger;
ConfigureParameters();
_hasCustomCacheKey = !string.IsNullOrWhiteSpace(Parameters.CustomCacheKey);
_keys = new ConcurrentDictionary <string, string>();
_transformationsKey = new Lazy <string>(() =>
{
if (Parameters.Transformations == null || Parameters.Transformations.Count == 0)
{
return(string.Empty);
}
return(";" + string.Join(";", Parameters.Transformations.Select(t => t.Key)));
});
_downsamplingKey = new Lazy <string>(() =>
{
if (Parameters.DownSampleSize == null)
{
return(string.Empty);
}
return(string.Concat(";", Parameters.DownSampleSize.Item1, "x", Parameters.DownSampleSize.Item2));
});
_rawKey = new Lazy <string>(() => GetKeyInternal(null, true));
_streamKey = new Lazy <string>(() => "Stream" + GetNextStreamIndex());
}
public ImageLoaderTask(IMemoryCache <TImageContainer> memoryCache, IDataResolverFactory dataResolverFactory, ITarget <TImageContainer, TImageView> target, TaskParameter parameters, IImageService imageService, Configuration configuration, IMainThreadDispatcher mainThreadDispatcher, bool clearCacheOnOutOfMemory)
{
_clearCacheOnOutOfMemory = clearCacheOnOutOfMemory;
MemoryCache = memoryCache;
DataResolverFactory = dataResolverFactory;
PlatformTarget = target;
ImageService = imageService;
Configuration = configuration;
MainThreadDispatcher = mainThreadDispatcher;
Parameters = parameters;
CancellationTokenSource = new CancellationTokenSource();
ImageInformation = new ImageInformation();
CanUseMemoryCache = true;
KeyRaw = Parameters.Path;
if (Parameters.Source == ImageSource.Stream)
{
CanUseMemoryCache = false;
KeyRaw = string.Concat("Stream_", GetNextStreamIndex());
}
if (!string.IsNullOrWhiteSpace(Parameters.CustomCacheKey))
{
CanUseMemoryCache = true;
KeyRaw = Parameters.CustomCacheKey;
}
if (Parameters.CacheType == CacheType.Disk)
{
CanUseMemoryCache = false;
}
if (string.IsNullOrWhiteSpace(KeyRaw))
{
KeyRaw = Guid.NewGuid().ToString("N");
}
var vect = Parameters.CustomDataResolver as IVectorDataResolver;
if (vect != null)
{
KeyRaw = string.Format("{0};(size={1}x{2},dip={3})", KeyRaw, vect.VectorWidth, vect.VectorHeight, vect.UseDipUnits);
}
KeyDownsamplingOnly = string.Empty;
if (Parameters.DownSampleSize != null && (Parameters.DownSampleSize.Item1 > 0 || Parameters.DownSampleSize.Item2 > 0))
{
if (Parameters.DownSampleUseDipUnits)
{
KeyDownsamplingOnly = string.Concat(";", DpiToPixels(Parameters.DownSampleSize.Item1), "x", DpiToPixels(Parameters.DownSampleSize.Item2));
}
else
{
KeyDownsamplingOnly = string.Concat(";", Parameters.DownSampleSize.Item1, "x", Parameters.DownSampleSize.Item2);
}
}
KeyTransformationsOnly = string.Empty;
if (Parameters.Transformations != null && Parameters.Transformations.Count > 0)
{
KeyTransformationsOnly = string.Concat(string.Join(";", Parameters.Transformations.Select(t => t.Key)));
}
Key = string.Concat(KeyRaw, KeyDownsamplingOnly, KeyTransformationsOnly);
KeyWithoutTransformations = string.Concat(KeyRaw, KeyDownsamplingOnly);
if (!string.IsNullOrWhiteSpace(Parameters.LoadingPlaceholderPath))
{
if (TransformPlaceholders)
{
KeyForLoadingPlaceholder = string.Concat(Parameters.LoadingPlaceholderPath, KeyDownsamplingOnly, KeyTransformationsOnly);
}
else
{
KeyForLoadingPlaceholder = string.Concat(Parameters.LoadingPlaceholderPath, KeyDownsamplingOnly);
}
var vectLo = Parameters.CustomLoadingPlaceholderDataResolver as IVectorDataResolver;
if (vectLo != null)
{
KeyForLoadingPlaceholder = string.Format("{0};(size={1}x{2},dip={3})", KeyForLoadingPlaceholder, vectLo.VectorWidth, vectLo.VectorHeight, vectLo.UseDipUnits);
}
}
if (!string.IsNullOrWhiteSpace(Parameters.ErrorPlaceholderPath))
{
if (TransformPlaceholders)
{
KeyForErrorPlaceholder = string.Concat(Parameters.ErrorPlaceholderPath, KeyDownsamplingOnly, KeyTransformationsOnly);
}
else
{
KeyForErrorPlaceholder = string.Concat(Parameters.ErrorPlaceholderPath, KeyDownsamplingOnly);
}
var vectEr = Parameters.CustomLoadingPlaceholderDataResolver as IVectorDataResolver;
if (vectEr != null)
{
KeyForErrorPlaceholder = string.Format("{0};(size={1}x{2},dip={3})", KeyForErrorPlaceholder, vectEr.VectorWidth, vectEr.VectorHeight, vectEr.UseDipUnits);
}
}
ImageInformation.SetKey(Key, Parameters.CustomCacheKey);
ImageInformation.SetPath(Parameters.Path);
Target?.SetImageLoadingTask(this);
}
public ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, nfloat imageScale, ITarget <UIImage, ImageLoaderTask> target, bool clearCacheOnOutOfMemory)
: base(mainThreadDispatcher, miniLogger, parameters, true, clearCacheOnOutOfMemory)
{
if (target == null)
{
throw new ArgumentNullException(nameof(target));
}
_target = target;
_imageScale = imageScale;
DownloadCache = downloadCache;
}
public PlatformImageLoaderTask(ITarget <PImage, TImageView> target, TaskParameter parameters, IImageService imageService, Configuration configuration, IMainThreadDispatcher mainThreadDispatcher)
: base(ImageCache.Instance, configuration.DataResolverFactory ?? DataResolvers.DataResolverFactory.Instance, target, parameters, imageService, configuration, mainThreadDispatcher, true)
{
// do not remove! Kicks scale retrieval so it's available for all, without deadlocks due to accessing MainThread
ScaleHelper.Init();
}
public PlatformImageLoaderTask(ITarget <PImage, TImageView> target, TaskParameter parameters, IImageService imageService) : base(ImageCache.Instance, target, parameters, imageService)
{
// do not remove! Kicks scale retrieval so it's available for all, without deadlocks due to accessing MainThread
ScaleHelper.Init();
}
private void CleanParameters()
{
if (_parameters != null)
{
_parameters.Dispose();
_parameters = null;
}
OnSuccess = null;
OnError = null;
OnFinish = null;
}
public ImageLoaderTask(IMemoryCache <TImageContainer> memoryCache, ITarget <TImageContainer, TImageView> target, TaskParameter parameters, IImageService imageService)
{
MemoryCache = memoryCache;
DataResolverFactory = imageService.Config.DataResolverFactory;
PlatformTarget = target;
ImageService = imageService;
Configuration = imageService.Config;
Parameters = parameters;
CancellationTokenSource = new CancellationTokenSource();
ImageInformation = new ImageInformation();
CanUseMemoryCache = true;
SetKeys();
}
protected ImageLoaderTaskBase(IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, bool clearCacheOnOutOfMemory)
{
_clearCacheOnOutOfMemory = clearCacheOnOutOfMemory;
CancellationToken = new CancellationTokenSource();
Parameters = parameters;
NumberOfRetryNeeded = parameters.RetryCount;
MainThreadDispatcher = mainThreadDispatcher;
Logger = miniLogger;
ConfigureParameters();
}
public ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, ITarget <BitmapDrawable, ImageLoaderTask> target)
: base(mainThreadDispatcher, miniLogger, parameters, true, ImageService.Instance.Config.VerboseLoadingCancelledLogging)
{
if (target == null)
{
throw new ArgumentNullException(nameof(target));
}
_target = target;
DownloadCache = downloadCache;
}
/// <summary>
/// This constructor is useful for child classes only. It can help when having a totally different loading logic.
/// </summary>
/// <param name="miniLogger">Logger</param>
/// <param name="key">Key.</param>
/// <param name="imageView">Image view.</param>
protected ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, string key, ITarget <BitmapDrawable, ImageLoaderTask> target)
: this(downloadCache, mainThreadDispatcher, miniLogger, TaskParameter.FromFile(key), target)
{
}
public ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, Func <UIView> getNativeControl, Action <UIImage> doWithImage, nfloat imageScale)
: base(mainThreadDispatcher, miniLogger, parameters)
{
CancellationToken = new CancellationTokenSource();
_getNativeControl = getNativeControl;
_doWithImage = doWithImage;
_imageScale = imageScale;
DownloadCache = downloadCache;
}
public ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, ITarget <WriteableBitmap, ImageLoaderTask> target, bool clearCacheOnOutOfMemory)
: base(mainThreadDispatcher, miniLogger, parameters, false, clearCacheOnOutOfMemory)
{
if (target == null)
{
throw new ArgumentNullException(nameof(target));
}
_target = target;
DownloadCache = downloadCache;
}
public ImageLoaderTask(IMemoryCache <TImageContainer> memoryCache, IDataResolverFactory dataResolverFactory, ITarget <TImageContainer, TImageView> target, TaskParameter parameters, IImageService imageService, Configuration configuration, IMainThreadDispatcher mainThreadDispatcher, bool clearCacheOnOutOfMemory)
{
_clearCacheOnOutOfMemory = clearCacheOnOutOfMemory;
MemoryCache = memoryCache;
DataResolverFactory = dataResolverFactory;
PlatformTarget = target;
ImageService = imageService;
Configuration = configuration;
MainThreadDispatcher = mainThreadDispatcher;
Parameters = parameters;
CancellationTokenSource = new CancellationTokenSource();
ImageInformation = new ImageInformation();
CanUseMemoryCache = true;
KeyRaw = Parameters.Path;
if (Parameters.Source == ImageSource.Stream)
{
CanUseMemoryCache = false;
KeyRaw = string.Concat("Stream_", GetNextStreamIndex());
}
if (!string.IsNullOrWhiteSpace(Parameters.CustomCacheKey))
{
CanUseMemoryCache = true;
KeyRaw = Parameters.CustomCacheKey;
}
KeyDownsamplingOnly = string.Empty;
if (Parameters.DownSampleSize != null)
{
KeyDownsamplingOnly = string.Concat(";", Parameters.DownSampleSize.Item1, "x", Parameters.DownSampleSize.Item2);
}
KeyTransformationsOnly = string.Empty;
if (Parameters.Transformations != null && Parameters.Transformations.Count > 0)
{
KeyTransformationsOnly = string.Concat(string.Join(";", Parameters.Transformations.Select(t => t.Key)));
}
Key = string.Concat(KeyRaw, KeyDownsamplingOnly, KeyTransformationsOnly);
KeyWithoutTransformations = string.Concat(KeyRaw, KeyDownsamplingOnly);
if (!string.IsNullOrWhiteSpace(Parameters.LoadingPlaceholderPath))
{
if (TransformPlaceholders)
{
KeyForLoadingPlaceholder = string.Concat(Parameters.LoadingPlaceholderPath, KeyDownsamplingOnly, KeyTransformationsOnly);
}
else
{
KeyForLoadingPlaceholder = string.Concat(Parameters.LoadingPlaceholderPath, KeyDownsamplingOnly);
}
}
if (!string.IsNullOrWhiteSpace(Parameters.ErrorPlaceholderPath))
{
if (TransformPlaceholders)
{
KeyForErrorPlaceholder = string.Concat(Parameters.ErrorPlaceholderPath, KeyDownsamplingOnly, KeyTransformationsOnly);
}
else
{
KeyForErrorPlaceholder = string.Concat(Parameters.ErrorPlaceholderPath, KeyDownsamplingOnly);
}
}
ImageInformation.SetKey(Key, Parameters.CustomCacheKey);
ImageInformation.SetPath(Parameters.Path);
Target?.SetImageLoadingTask(this);
}
public Task<Tuple<Stream, LoadingResult, ImageInformation>> Resolve(string identifier, TaskParameter parameters, CancellationToken token)
{
throw new NotImplementedException();
}
public PlatformImageLoaderTask(ITarget <BitmapSource, TImageView> target, TaskParameter parameters, IImageService imageService) : base(ImageCache.Instance, target, parameters, imageService)
{
}
public ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, ImageView imageView)
: base(mainThreadDispatcher, miniLogger, parameters, true)
{
DownloadCache = downloadCache;
if (imageView != null)
{
_imageWeakReference = new WeakReference <ImageView>(imageView);
}
}
public UrlStreamResolver(TaskParameter parameter, IDownloadCache downloadCache) {
Parameters = parameter;
DownloadCache = downloadCache;
}
public ImageLoaderTask(IDownloadCache downloadCache, IMainThreadDispatcher mainThreadDispatcher, IMiniLogger miniLogger, TaskParameter parameters, Func <UIView> getNativeControl, Action <UIImage, bool, bool> doWithImage, nfloat imageScale)
: base(mainThreadDispatcher, miniLogger, parameters, true)
{
_getNativeControl = getNativeControl;
_doWithImage = doWithImage;
_imageScale = imageScale;
DownloadCache = downloadCache;
}
