protected void Page_Load(object sender, EventArgs e)
{
PluginBuilder pb = PluginBuilderFactory.newPluginBuilder(Request, Response);
ParamsProvider provider = pb.getCustomParamsProvider();
String digest = provider.getParameter("formula", null);
String mml = provider.getParameter("mml", null);
if (digest == null && mml == null)
{
throw new Exception("Missing parameters 'formula' or 'mml'.");
}
// Backwards compatibility
// showimage.php?formula.png --> showimage.php?formula
// because formula is md5 string, remove all extensions.
if (digest != null && digest.LastIndexOf(".") >= 0)
{
digest = digest.Substring(0, digest.LastIndexOf("."));
}
Dictionary <string, string> param = PluginBuilderFactory.getProperties(Request);
// Adding - if necessary - CORS headers
HttpResponse res = new HttpResponse(this.Response);
String origin = this.Request.Headers.Get("origin");
pb.addCorsHeaders(res, origin);
if (pb.getConfiguration().getProperty("wirispluginperformance", "xml").IndexOf("true") != -1)
{
String useragent = provider.getParameter("useragent", "");
if (useragent.IndexOf("IE") != -1)
{
pb.getConfiguration().setProperty("wirisimageformat", "png");
}
else
{
pb.getConfiguration().setProperty("wirisimageformat", "svg");
}
Response.ContentType = "application/json";
Response.AddHeader("Cache-Control", "public, max-age=3600");
if (digest == null)
{
pb.newRender().showImage(digest, mml, provider);
digest = pb.newRender().computeDigest(mml, provider.getParameters());
}
string r = pb.newRender().showImageJson(digest, "en");
if (r.IndexOf("warning") != -1)
{
Response.AddHeader("Cache-Control", "no-cache, no-store, must-revalidate");
}
Response.Write(r);
}
else
{
byte [] bs = pb.newRender().showImage(digest, mml, provider);
Response.ContentType = pb.getImageFormatController().getContentType();
Response.OutputStream.Write(bs, 0, bs.Length);
}
}
