private async static void ActualImageSourceChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
DelayLoadImage instance = o as DelayLoadImage;
if (instance == null)
{
return;
}
instance.imageLoaded = false;
var newCacheUri = e.NewValue;
if (newCacheUri == null)
{
return;
}
var cacheUri =
await WebDataCache.GetLocalUriAsync(new Uri(newCacheUri.ToString(), UriKind.RelativeOrAbsolute));
instance._image.UriSource = cacheUri;
VisualStateManager.GoToState(instance, STATE_DEFAULT_NAME, false);
//这里引入Q42的缓存
}
//private static ImageSourceConverter converter = new ImageSourceConverter();
private static void DefaultImageSourceChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
DelayLoadImage instance = o as DelayLoadImage;
if (instance?.defaultImage != null)
{
instance.defaultImage.Source = (ImageSource)e.NewValue;
}
}
private static void StretchChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
DelayLoadImage instance = o as DelayLoadImage;
if (instance != null)
{
if (instance.defaultImage != null)
{
instance.defaultImage.Stretch = (Stretch)e.NewValue;
}
if (instance.actualImage != null)
{
instance.actualImage.Stretch = (Stretch)e.NewValue;
}
}
}
