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; } } }