public virtual void RequestImage()
{
if (Dataset.WcsImage != null)
{
texReady = true;
Downloading = false;
errored = false;
ReadyToRender = true;
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
return;
}
if (!Downloading && !ReadyToRender)
{
Downloading = true;
texture = (ImageElement)Document.CreateElement("img");
CrossDomainImage xdomimg = (CrossDomainImage)(object)texture;
texture.AddEventListener("load", delegate(ElementEvent e)
{
texReady = true;
Downloading = false;
errored = false;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
MakeTexture();
}, false);
texture.AddEventListener("error", delegate(ElementEvent e)
{
if (!texture.HasAttribute("proxyattempt"))
{
texture.Src = Util.GetProxiedUrl(URL);
texture.SetAttribute("proxyattempt", true);
}
else
{
Downloading = false;
ReadyToRender = false;
errored = true;
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
}
}, false);
xdomimg.crossOrigin = "anonymous";
texture.Src = this.URL.Replace("cdn.", "www.");
//texture.Src = "dss.png";
// TODO add event listener for failed!
}
}
public void Load(string url)
{
URL = url;
if (!Downloading)
{
Downloading = true;
ImageElement = (ImageElement)Document.CreateElement("img");
CrossDomainImage xdomimg = (CrossDomainImage)(object)ImageElement;
ImageElement.AddEventListener("load", delegate(ElementEvent e)
{
Ready = true;
Downloading = false;
Errored = false;
MakeTexture();
}, false);
ImageElement.AddEventListener("error", delegate(ElementEvent e)
{
if (!ImageElement.HasAttribute("proxyattempt"))
{
ImageElement.SetAttribute("proxyattempt", true);
string new_url = URLHelpers.singleton.activateProxy(URL);
if (new_url != null) // null => don't bother: we know that the proxy won't help
{
ImageElement.Src = new_url;
return;
}
}
Downloading = false;
Ready = false;
Errored = true;
}, false);
xdomimg.crossOrigin = "anonymous";
ImageElement.Src = URL;
}
}
public void Load(string url)
{
URL = url;
if (!Downloading)
{
Downloading = true;
ImageElement = (ImageElement)Document.CreateElement("img");
CrossDomainImage xdomimg = (CrossDomainImage)(object)ImageElement;
ImageElement.AddEventListener("load", delegate(ElementEvent e)
{
Ready = true;
Downloading = false;
Errored = false;
MakeTexture();
}, false);
ImageElement.AddEventListener("error", delegate(ElementEvent e)
{
if (!ImageElement.HasAttribute("proxyattempt"))
{
ImageElement.Src = Util.GetProxiedUrl(URL);
ImageElement.SetAttribute("proxyattempt", true);
}
else
{
Downloading = false;
Ready = false;
Errored = true;
}
}, false);
xdomimg.crossOrigin = "anonymous";
// texture.Src = this.URL.Replace("cdn.", "www.");
ImageElement.Src = URL;
}
}
public virtual void RequestImage()
{
if (Dataset.WcsImage != null)
{
texReady = true;
Downloading = false;
errored = false;
ReadyToRender = true;
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
return;
}
if (!Downloading && !ReadyToRender)
{
Downloading = true;
texture = (ImageElement)Document.CreateElement("img");
CrossDomainImage xdomimg = (CrossDomainImage)(object)texture;
texture.AddEventListener("load", delegate(ElementEvent e)
{
texReady = true;
Downloading = false;
errored = false;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
MakeTexture();
}, false);
texture.AddEventListener("error", delegate(ElementEvent e)
{
if (!texture.HasAttribute("proxyattempt"))
{
texture.SetAttribute("proxyattempt", true);
// NOTE: `this.URL` is dynamically generated using
// URLHelpers.rewrite(). Say that we request tiles from
// example.com, which requires CORS proxying. Say also
// that this callback is called for a request to a tile
// that should in fact be available. If a different
// request fails before this callback is called,
// activateProxy() will be called on the example.com
// domain, making it so that `this.URL` in the following
// call goes through the proxy, making it so that
// `new_url` is null, making it so that this tile is
// erroneously marked as failed when it should not be.
// The solution: make sure to check proxy activation
// with the *original* request URL, `texture.Src`, not
// the one that may have been updated, `this.URL`.
string new_url = URLHelpers.singleton.activateProxy(texture.Src);
if (new_url != null)
{ // null => don't bother: we know that the proxy won't help
texture.Src = new_url;
return;
}
}
Downloading = false;
ReadyToRender = false;
errored = true;
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
}, false);
xdomimg.crossOrigin = "anonymous";
texture.Src = this.URL;
}
}
public virtual void RequestImage()
{
if (dataset.Extension.ToLowerCase().IndexOf("fits") > -1)
{
if (!Downloading && !ReadyToRender)
{
Downloading = true;
if (RenderContext.UseGlVersion2)
{
fitsImage = new FitsImageTile(dataset, URL, delegate(WcsImage wcsImage)
{
Downloading = false;
errored = fitsImage.errored;
TileCache.RemoveFromQueue(this.Key, true);
if (!fitsImage.errored)
{
// For a non-HiPS tiled FITS, this is our
// mechanism for notifying the layer creator
// that the initial FITS data have loaded and
// the FitsProperties can be trusted.
if (Level == 0)
{
dataset.FitsProperties.FireMainImageLoaded(fitsImage);
fitsImage.ApplyDisplaySettings();
}
texReady = true;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
MakeTexture();
}
});
}
else
{
fitsImage = FitsImageJs.CreateTiledFits(dataset, URL, delegate(WcsImage wcsImage)
{
if (Level == 0)
{
dataset.FitsProperties.FireMainImageLoaded(fitsImage);
}
texReady = true;
Downloading = false;
errored = fitsImage.errored;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
texture2d = wcsImage.GetBitmap().GetTexture();
});
}
}
}
else
{
if (Dataset.WcsImage != null)
{
texReady = true;
Downloading = false;
errored = false;
ReadyToRender = true;
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
return;
}
if (!Downloading && !ReadyToRender)
{
Downloading = true;
texture = (ImageElement)Document.CreateElement("img");
CrossDomainImage xdomimg = (CrossDomainImage)(object)texture;
texture.AddEventListener("load", delegate(ElementEvent e)
{
texReady = true;
Downloading = false;
errored = false;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
MakeTexture();
}, false);
texture.AddEventListener("error", delegate(ElementEvent e)
{
if (!texture.HasAttribute("proxyattempt"))
{
texture.SetAttribute("proxyattempt", true);
// NOTE: `this.URL` is dynamically generated using
// URLHelpers.rewrite(). Say that we request tiles from
// example.com, which requires CORS proxying. Say also
// that this callback is called for a request to a tile
// that should in fact be available. If a different
// request fails before this callback is called,
// activateProxy() will be called on the example.com
// domain, making it so that `this.URL` in the following
// call goes through the proxy, making it so that
// `new_url` is null, making it so that this tile is
// erroneously marked as failed when it should not be.
// The solution: make sure to check proxy activation
// with the *original* request URL, `texture.Src`, not
// the one that may have been updated, `this.URL`.
string new_url = URLHelpers.singleton.activateProxy(texture.Src);
if (new_url != null)
{ // null => don't bother: we know that the proxy won't help
texture.Src = new_url;
return;
}
}
Downloading = false;
ReadyToRender = false;
errored = true;
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
}, false);
xdomimg.crossOrigin = "anonymous";
texture.Src = this.URL;
}
}
}
