/// <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, LoadCompleteDelegate onCompleted = null, Action onCanceled = null)
{
bool currentRequestedURLAlreadyLoaded = _CurrentRequestedURL == imageURL;
_CurrentRequestedURL = imageURL;
if (loadCachedIfAvailable)
{
bool foundCached = false;
// Don't re-request if the url is the same. This is useful if there's no pool provided
if (currentRequestedURLAlreadyLoaded)
{
foundCached = _Texture != null;
}
else if (_Pool != null)
{
Texture2D cachedInPool = _Pool.Get(imageURL) as Texture2D;
if (cachedInPool)
{
_Texture = cachedInPool;
foundCached = true;
_CurrentRequestedURL = imageURL;
}
}
if (foundCached)
{
_RawImage.texture = _Texture;
if (onCompleted != null)
{
onCompleted(true, true);
}
return;
}
}
_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
{
// Commented: not reusing textures to load data into them anymore, since in most cases we'll use a pool
//result.LoadTextureInto(_Texture);
if (_Pool == null)
{
// Non-pooled textures should be destroyed
if (_Texture)
{
DisposeTexture(_Texture);
}
_Texture = result.CreateTextureFromReceivedData();
}
else
{
var textureAlreadyStoredMeanwhile = _Pool.Get(imageURL);
bool someoneStoredTheImageSooner = textureAlreadyStoredMeanwhile != null;
if (someoneStoredTheImageSooner)
{
// Happens when the same URL is requested multiple times for the first time, and of course only the first
// downloaded image should be kept. In this case, someone else already have downloaded and cached the image, so we just discard the one we downloaded
_Texture = textureAlreadyStoredMeanwhile as Texture2D;
}
else
{
// First time downloaded => cache
_Texture = result.CreateTextureFromReceivedData();
_Pool.Put(imageURL, _Texture);
}
}
_RawImage.texture = _Texture;
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);
}
/// <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;
}
}
_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
{
if (_RecycledTexture)
{
result.LoadTextureInto(_RecycledTexture);
}
else
{
_RecycledTexture = result.CreateTextureFromReceivedData();
}
_RawImage.texture = _RecycledTexture;
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);
}