private async Task OnPressedCachedImage(CachedImage cachedImage)
{
if (cachedImage is null || !cachedImage.IsEnabled)
{
return;
}
cachedImage.Transformations.Clear();
cachedImage.Transformations.Add(pressed);
cachedImage.ReloadImage();
await Task.Delay(250);
ResetHeaderButtonColor(cachedImage);
}
/// <summary>
/// Create Image Widget
/// </summary>
/// <returns>nothing</returns>
public static void Image(Grid grid, int px, int py, int sx, int sy, string header, string straspect, JObject data)
{
Microsoft.AppCenter.Analytics.Analytics.TrackEvent("Create Image Widget");
CrossLogger.Current.Debug("Image", "Creating Image Widget");
try
{
Models.Image item = data.ToObject <Models.Image>();
CrossLogger.Current.Debug("Image", "URL: " + item.Url);
//Aspect ratio
Aspect aspect = Aspect.AspectFit;
switch (straspect.ToLower())
{
case "fill":
aspect = Aspect.Fill;
break;
case "aspectfill":
aspect = Aspect.AspectFill;
break;
case "aspectfit":
aspect = Aspect.AspectFit;
break;
}
var img = new CachedImage()
{
DownsampleToViewSize = false,
CacheDuration = TimeSpan.FromMilliseconds(1000),
Aspect = aspect,
RetryCount = 999,
RetryDelay = 2000,
BitmapOptimizations = true,
Source = item.Url
};
grid.Children.Add(img, px, px + sx, py, py + sy);
Label l_header = new Label
{
Text = header,
FontSize = 20,
TextColor = App.Config.TextColor,
BackgroundColor = Color.Transparent,
HorizontalOptions = LayoutOptions.Start,
VerticalOptions = LayoutOptions.Start
};
grid.Children.Add(l_header, px, px + sx, py, py + sy);
//Button must be last to be added to work
ItemImageButton ImageButton = new ItemImageButton
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
BackgroundColor = Color.Transparent,
Name = header,
URL = item.Url,
};
grid.Children.Add(ImageButton, px, px + sx, py, py + sy);
ImageButton.Clicked += OnImageButtonClicked;
// Start the refresh time
if (item.Refresh != string.Empty)
{
int refresh = Convert.ToInt32(item.Refresh);
if (refresh > 0)
{
Device.StartTimer(TimeSpan.FromMilliseconds(refresh), () =>
{
Device.BeginInvokeOnMainThread(() => CrossLogger.Current.Debug("Image", "Refresh Image: " + item.Url));
try
{
//If not clearing the cache, image does not refresh
ImageService.Instance.InvalidateCacheAsync(CacheType.All);
img.ReloadImage();
}
catch (Exception ex)
{
Device.BeginInvokeOnMainThread(() => CrossLogger.Current.Error("Image", "Failed to refresh Image: " + ex.ToString()));
}
return(true);
});
}
}
}
catch (Exception ex)
{
CrossLogger.Current.Error("Image", "Image crashed: " + ex.ToString());
Error(grid, px, py, sx, sy, ex.ToString());
}
}
private void ResetHeaderButtonColor(CachedImage cachedImage)
{
cachedImage?.Transformations.Clear();
cachedImage?.Transformations.Add(idle);
cachedImage?.ReloadImage();
}
private void ResetHeaderButtonColor(CachedImage cachedImage)
{
cachedImage?.Transformations.Clear();
cachedImage?.Transformations.Add(cachedImage.IsEnabled ? idle : disabled);
cachedImage?.ReloadImage();
}