void UpdateBitmap(CachedImageView imageView, CachedImage image, CachedImage previousImage)
{
CancelIfNeeded();
if (image == null || imageView == null || imageView.Handle == IntPtr.Zero || _isDisposed)
{
return;
}
var ffSource = ImageSourceBinding.GetImageSourceBinding(image.Source, image);
if (ffSource == null)
{
if (_lastImageSource == null)
{
return;
}
_lastImageSource = null;
imageView.SetImageResource(global::Android.Resource.Color.Transparent);
return;
}
if (previousImage != null && !ffSource.Equals(_lastImageSource))
{
_lastImageSource = null;
imageView.SkipInvalidate();
Control.SetImageResource(global::Android.Resource.Color.Transparent);
}
image.SetIsLoading(true);
var placeholderSource = ImageSourceBinding.GetImageSourceBinding(image.LoadingPlaceholder, image);
var errorPlaceholderSource = ImageSourceBinding.GetImageSourceBinding(image.ErrorPlaceholder, image);
TaskParameter imageLoader;
image.SetupOnBeforeImageLoading(out imageLoader, ffSource, placeholderSource, errorPlaceholderSource);
if (imageLoader != null)
{
var finishAction = imageLoader.OnFinish;
var sucessAction = imageLoader.OnSuccess;
imageLoader.Finish((work) =>
{
finishAction?.Invoke(work);
ImageLoadingFinished(image);
});
imageLoader.Success((imageInformation, loadingResult) =>
{
sucessAction?.Invoke(imageInformation, loadingResult);
_lastImageSource = ffSource;
});
_currentTask = imageLoader.Into(imageView);
}
}
private void UpdateBitmap(CachedImage previous = null)
{
if (previous == null || !object.Equals(previous.Source, Element.Source))
{
Xamarin.Forms.ImageSource source = Element.Source;
var imageView = Control;
if (imageView == null)
{
return;
}
((IElementController)Element).SetValueFromRenderer(CachedImage.IsLoadingPropertyKey, true);
if (Element != null && object.Equals(Element.Source, source) && !_isDisposed)
{
Cancel();
TaskParameter imageLoader = null;
var ffSource = ImageSourceBinding.GetImageSourceBinding(source);
if (ffSource == null)
{
if (imageView != null)
{
imageView.SetImageDrawable(null);
}
ImageLoadingFinished(Element);
}
else if (ffSource.ImageSource == FFImageLoading.Work.ImageSource.Url)
{
imageLoader = ImageService.Instance.LoadUrl(ffSource.Path, Element.CacheDuration);
}
else if (ffSource.ImageSource == FFImageLoading.Work.ImageSource.CompiledResource)
{
imageLoader = ImageService.Instance.LoadCompiledResource(ffSource.Path);
}
else if (ffSource.ImageSource == FFImageLoading.Work.ImageSource.ApplicationBundle)
{
imageLoader = ImageService.Instance.LoadFileFromApplicationBundle(ffSource.Path);
}
else if (ffSource.ImageSource == FFImageLoading.Work.ImageSource.Filepath)
{
imageLoader = ImageService.Instance.LoadFile(ffSource.Path);
}
else if (ffSource.ImageSource == FFImageLoading.Work.ImageSource.Stream)
{
imageLoader = ImageService.Instance.LoadStream(ffSource.Stream);
}
if (imageLoader != null)
{
// CustomKeyFactory
if (Element.CacheKeyFactory != null)
{
var bindingContext = Element.BindingContext;
imageLoader.CacheKey(Element.CacheKeyFactory.GetKey(source, bindingContext));
}
// LoadingPlaceholder
if (Element.LoadingPlaceholder != null)
{
var placeholderSource = ImageSourceBinding.GetImageSourceBinding(Element.LoadingPlaceholder);
if (placeholderSource != null)
{
imageLoader.LoadingPlaceholder(placeholderSource.Path, placeholderSource.ImageSource);
}
}
// ErrorPlaceholder
if (Element.ErrorPlaceholder != null)
{
var placeholderSource = ImageSourceBinding.GetImageSourceBinding(Element.ErrorPlaceholder);
if (placeholderSource != null)
{
imageLoader.ErrorPlaceholder(placeholderSource.Path, placeholderSource.ImageSource);
}
}
// Downsample
if (Element.DownsampleToViewSize && (Element.Width > 0 || Element.Height > 0))
{
if (Element.Height > Element.Width)
{
imageLoader.DownSample(height: Element.Height.DpToPixels());
}
else
{
imageLoader.DownSample(width: Element.Width.DpToPixels());
}
}
else if (Element.DownsampleToViewSize && (Element.WidthRequest > 0 || Element.HeightRequest > 0))
{
if (Element.HeightRequest > Element.WidthRequest)
{
imageLoader.DownSample(height: Element.HeightRequest.DpToPixels());
}
else
{
imageLoader.DownSample(width: Element.WidthRequest.DpToPixels());
}
}
else if ((int)Element.DownsampleHeight != 0 || (int)Element.DownsampleWidth != 0)
{
if (Element.DownsampleHeight > Element.DownsampleWidth)
{
imageLoader.DownSample(height: Element.DownsampleUseDipUnits
? Element.DownsampleHeight.DpToPixels() : (int)Element.DownsampleHeight);
}
else
{
imageLoader.DownSample(width: Element.DownsampleUseDipUnits
? Element.DownsampleWidth.DpToPixels() : (int)Element.DownsampleWidth);
}
}
// RetryCount
if (Element.RetryCount > 0)
{
imageLoader.Retry(Element.RetryCount, Element.RetryDelay);
}
// TransparencyChannel
if (Element.TransparencyEnabled.HasValue)
{
imageLoader.TransparencyChannel(Element.TransparencyEnabled.Value);
}
// FadeAnimation
if (Element.FadeAnimationEnabled.HasValue)
{
imageLoader.FadeAnimation(Element.FadeAnimationEnabled.Value);
}
// TransformPlaceholders
if (Element.TransformPlaceholders.HasValue)
{
imageLoader.TransformPlaceholders(Element.TransformPlaceholders.Value);
}
// Transformations
if (Element.Transformations != null && Element.Transformations.Count > 0)
{
imageLoader.Transform(Element.Transformations);
}
imageLoader.WithPriority(Element.LoadingPriority);
var element = Element;
imageLoader.Finish((work) => {
element.OnFinish(new CachedImageEvents.FinishEventArgs(work));
ImageLoadingFinished(element);
});
imageLoader.Success((imageInformation, loadingResult) =>
element.OnSuccess(new CachedImageEvents.SuccessEventArgs(imageInformation, loadingResult)));
imageLoader.Error((exception) =>
element.OnError(new CachedImageEvents.ErrorEventArgs(exception)));
_currentTask = imageLoader.Into(imageView);
}
}
}
}
private void UpdateBitmap(CachedImage previous = null)
{
Xamarin.Forms.ImageSource source = Element.Source;
var imageView = Control;
var ffSource = ImageSourceBinding.GetImageSourceBinding(source, Element);
var placeholderSource = ImageSourceBinding.GetImageSourceBinding(Element.LoadingPlaceholder, Element);
if (previous != null && _lastImageSource != null && ffSource != null && !ffSource.Equals(_lastImageSource) &&
(string.IsNullOrWhiteSpace(placeholderSource?.Path) || placeholderSource?.Stream != null))
{
_lastImageSource = null;
if (imageView != null)
{
imageView.SkipInvalidate();
}
Control.SetImageResource(global::Android.Resource.Color.Transparent);
}
Element.SetIsLoading(true);
if (Element != null && object.Equals(Element.Source, source) && !_isDisposed)
{
Cancel();
TaskParameter imageLoader = null;
if (ffSource == null)
{
//if (imageView != null)
imageView.SetImageResource(global::Android.Resource.Color.Transparent);
ImageLoadingFinished(Element);
}
else if (ffSource.ImageSource == FFImageLoading.Work.ImageSource.Url)
{
imageLoader = ImageService.Instance.LoadUrl(ffSource.Path, Element.CacheDuration);
}
else if (ffSource.ImageSource == FFImageLoading.Work.ImageSource.CompiledResource)
{
imageLoader = ImageService.Instance.LoadCompiledResource(ffSource.Path);
}
else if (ffSource.ImageSource == FFImageLoading.Work.ImageSource.ApplicationBundle)
{
imageLoader = ImageService.Instance.LoadFileFromApplicationBundle(ffSource.Path);
}
else if (ffSource.ImageSource == FFImageLoading.Work.ImageSource.Filepath)
{
imageLoader = ImageService.Instance.LoadFile(ffSource.Path);
}
else if (ffSource.ImageSource == FFImageLoading.Work.ImageSource.Stream)
{
imageLoader = ImageService.Instance.LoadStream(ffSource.Stream);
}
else if (ffSource.ImageSource == FFImageLoading.Work.ImageSource.EmbeddedResource)
{
imageLoader = ImageService.Instance.LoadEmbeddedResource(ffSource.Path);
}
if (imageLoader != null)
{
// CustomKeyFactory
if (Element.CacheKeyFactory != null)
{
var bindingContext = Element.BindingContext;
imageLoader.CacheKey(Element.CacheKeyFactory.GetKey(source, bindingContext));
}
// LoadingPlaceholder
if (Element.LoadingPlaceholder != null)
{
if (placeholderSource != null)
{
imageLoader.LoadingPlaceholder(placeholderSource.Path, placeholderSource.ImageSource);
}
}
// ErrorPlaceholder
if (Element.ErrorPlaceholder != null)
{
var errorPlaceholderSource = ImageSourceBinding.GetImageSourceBinding(Element.ErrorPlaceholder, Element);
if (errorPlaceholderSource != null)
{
imageLoader.ErrorPlaceholder(errorPlaceholderSource.Path, errorPlaceholderSource.ImageSource);
}
}
// Enable vector image source
var vect1 = Element.Source as IVectorImageSource;
var vect2 = Element.LoadingPlaceholder as IVectorImageSource;
var vect3 = Element.ErrorPlaceholder as IVectorImageSource;
if (vect1 != null)
{
imageLoader.WithCustomDataResolver(vect1.GetVectorDataResolver());
}
if (vect2 != null)
{
imageLoader.WithCustomLoadingPlaceholderDataResolver(vect2.GetVectorDataResolver());
}
if (vect3 != null)
{
imageLoader.WithCustomErrorPlaceholderDataResolver(vect3.GetVectorDataResolver());
}
if (Element.CustomDataResolver != null)
{
imageLoader.WithCustomDataResolver(Element.CustomDataResolver);
imageLoader.WithCustomLoadingPlaceholderDataResolver(Element.CustomDataResolver);
imageLoader.WithCustomErrorPlaceholderDataResolver(Element.CustomDataResolver);
}
// Downsample
if (Element.DownsampleToViewSize && (Element.Width > 0 || Element.Height > 0))
{
if (Element.Height > Element.Width)
{
imageLoader.DownSampleInDip(height: (int)Element.Height);
}
else
{
imageLoader.DownSampleInDip(width: (int)Element.Width);
}
}
else if (Element.DownsampleToViewSize && (Element.WidthRequest > 0 || Element.HeightRequest > 0))
{
if (Element.HeightRequest > Element.WidthRequest)
{
imageLoader.DownSampleInDip(height: (int)Element.HeightRequest);
}
else
{
imageLoader.DownSampleInDip(width: (int)Element.WidthRequest);
}
}
else if ((int)Element.DownsampleHeight != 0 || (int)Element.DownsampleWidth != 0)
{
if (Element.DownsampleHeight > Element.DownsampleWidth)
{
if (Element.DownsampleUseDipUnits)
{
imageLoader.DownSampleInDip(height: (int)Element.DownsampleHeight);
}
else
{
imageLoader.DownSample(height: (int)Element.DownsampleHeight);
}
}
else
{
if (Element.DownsampleUseDipUnits)
{
imageLoader.DownSampleInDip(width: (int)Element.DownsampleWidth);
}
else
{
imageLoader.DownSample(width: (int)Element.DownsampleWidth);
}
}
}
// RetryCount
if (Element.RetryCount > 0)
{
imageLoader.Retry(Element.RetryCount, Element.RetryDelay);
}
// TransparencyChannel
if (Element.TransparencyEnabled.HasValue)
{
imageLoader.TransparencyChannel(Element.TransparencyEnabled.Value);
}
if (Element.BitmapOptimizations.HasValue)
{
imageLoader.BitmapOptimizations(Element.BitmapOptimizations.Value);
}
// FadeAnimation
if (Element.FadeAnimationEnabled.HasValue)
{
imageLoader.FadeAnimation(Element.FadeAnimationEnabled.Value);
}
// TransformPlaceholders
if (Element.TransformPlaceholders.HasValue)
{
imageLoader.TransformPlaceholders(Element.TransformPlaceholders.Value);
}
// Transformations
if (Element.Transformations != null && Element.Transformations.Count > 0)
{
imageLoader.Transform(Element.Transformations);
}
imageLoader.WithPriority(Element.LoadingPriority);
if (Element.CacheType.HasValue)
{
imageLoader.WithCache(Element.CacheType.Value);
}
if (Element.LoadingDelay.HasValue)
{
imageLoader.Delay(Element.LoadingDelay.Value);
}
var element = Element;
imageLoader.Finish((work) =>
{
element.OnFinish(new CachedImageEvents.FinishEventArgs(work));
ImageLoadingFinished(element);
});
imageLoader.Success((imageInformation, loadingResult) =>
{
element.OnSuccess(new CachedImageEvents.SuccessEventArgs(imageInformation, loadingResult));
_lastImageSource = ffSource;
});
imageLoader.Error((exception) =>
element.OnError(new CachedImageEvents.ErrorEventArgs(exception)));
imageLoader.DownloadStarted((downloadInformation) =>
element.OnDownloadStarted(new CachedImageEvents.DownloadStartedEventArgs(downloadInformation)));
imageLoader.DownloadProgress((progress) =>
element.OnDownloadProgress(new CachedImageEvents.DownloadProgressEventArgs(progress)));
imageLoader.FileWriteFinished((fileWriteInfo) =>
element.OnFileWriteFinished(new CachedImageEvents.FileWriteFinishedEventArgs(fileWriteInfo)));
element.SetupOnBeforeImageLoading(imageLoader);
_currentTask = imageLoader.Into(imageView);
}
}
}