/// <summary> Called when a cell becomes visible </summary>
/// <param name="viewHolder"> use viewHolder.itemIndex to find your corresponding model and feed data into its views</param>
protected override void UpdateCellViewsHolder(MyCellViewsHolder viewHolder)
{
var model = _Data[viewHolder.itemIndex];
viewHolder.icon.enabled = false;
viewHolder.title.text = "Loading";
int itemIdexAtRequest = viewHolder.itemIndex;
string requestedPath = model.imageURL;
var request = new SimpleImageDownloader.Request()
{
url = requestedPath,
onDone = result =>
{
if (IsModelStillValid(viewHolder.itemIndex, itemIdexAtRequest, requestedPath))
{
viewHolder.title.text = model.title;
viewHolder.icon.enabled = true;
//viewHolder.loadingProgress.fillAmount = 0f;
if (viewHolder.icon.texture)
{
var as2D = viewHolder.icon.texture as Texture2D;
if (as2D)
{
result.LoadTextureInto(as2D); // re-use Texture2D object
return;
}
Destroy(viewHolder.icon.texture); // texture type incompatible => destroy it
}
viewHolder.icon.texture = result.CreateTextureFromReceivedData();
}
},
onError = () =>
{
if (IsModelStillValid(viewHolder.itemIndex, itemIdexAtRequest, requestedPath))
{
viewHolder.title.text = "No connection";
}
}
};
SimpleImageDownloader.Instance.Enqueue(request);
}
/// <summary>Starts the loading, setting the current image to <see cref="_LoadingTexture"/>, if available. If the image is already in cache, and <paramref name="loadCachedIfAvailable"/>==true, will load that instead</summary>
public void Load(string imageURL, bool loadCachedIfAvailable = true, Action <bool, bool> onCompleted = null, Action onCanceled = null)
{
// Don't download the same image again
if (loadCachedIfAvailable && _CurrentRequestedURL == imageURL)
{
if (_RecycledTexture)
{
if (_RecycledTexture != _RawImage.texture)
{
_RawImage.texture = _RecycledTexture;
}
if (onCompleted != null)
{
onCompleted(true, true);
}
return;
}
}
if (_RawImage.texture)
{
_RecycledTexture = _RawImage.texture as Texture2D;
if (_RecycledTexture == _LoadingTexture || _RecycledTexture == _ErrorTexture)
{
_RecycledTexture = null;
}
}
else
{
_RecycledTexture = null;
}
_CurrentRequestedURL = imageURL;
_RawImage.texture = _LoadingTexture;
var request = new SimpleImageDownloader.Request()
{
url = imageURL,
onDone = result =>
{
if (!_DestroyPending && imageURL == _CurrentRequestedURL) // this will be false if a new request was done during downloading, case in which the result will be ignored
{
Texture2D texToUse;
if (_RecycledTexture)
{
result.LoadTextureInto(_RecycledTexture);
texToUse = _RecycledTexture;
}
else
{
texToUse = result.CreateTextureFromReceivedData();
}
_RawImage.texture = texToUse;
if (onCompleted != null)
{
onCompleted(false, true);
}
}
else if (onCanceled != null)
{
onCanceled();
}
},
onError = () =>
{
if (!_DestroyPending && imageURL == _CurrentRequestedURL) // this will be false if a new request was done during downloading, case in which the result will be ignored
{
_RawImage.texture = _ErrorTexture;
if (onCompleted != null)
{
onCompleted(false, false);
}
}
else if (onCanceled != null)
{
onCanceled();
}
}
};
SimpleImageDownloader.Instance.Enqueue(request);
}
