public void Return(IVirtualBrowser browser)
{
if (IsPoolEnabled)
{
browser.Size = new Size(1920, 1080);
_freeBrowsers.Add(browser);
}
else
{
browser.Dispose();
}
_browserPool.Release(1);
}
public virtual async Task <bool> LoadPageAsync(IVirtualBrowser browser, string processJsonModel, int maxImageWidth, int maxImageHeight)
{
try
{
var task = new TaskCompletionSource <bool>();
if (!_tcs.TryAdd(browser, task))
{
Debug.Assert(false, "Unexpected Error: The dictionary does not contain a key (browser) added previously.");
}
var htmlPath = Path.GetFullPath("ProcessHtml/index.html");
browser.AsyncBoundObject.Reset(RenderWaitSeconds * 1000);
browser.LoadingStateChanged += BrowserLoadingStateChanged;
browser.Load(htmlPath);
await task.Task;
}
finally
{
TaskCompletionSource <bool> removedTask;
if (!_tcs.TryRemove(browser, out removedTask))
{
Debug.Assert(false, "Unexpected Error: The dictionary already contains a key (browser).");
}
}
//-------------------------------------------
// Get Process model
browser.ExecuteScriptAsync($"window.renderGraph('{HttpUtility.JavaScriptStringEncode(processJsonModel)}', {maxImageWidth}, {maxImageHeight});");
bool renderResult;
try
{
renderResult = await browser.AsyncBoundObject.RenderCompletionSource.Task;
}
catch (TaskCanceledException)
{
throw new ApplicationException(ServiceHelper.RenderTimeoutErrorMessage);
}
if (!renderResult)
{
throw new ApplicationException(browser.AsyncBoundObject.ErrorMessage);
}
Log.Info($"Cef Image: width = {browser.AsyncBoundObject.Width}, height = {browser.AsyncBoundObject.Height}, scale = {browser.AsyncBoundObject.Scale}");
var w = browser.AsyncBoundObject.Width + 20;
var h = browser.AsyncBoundObject.Height + 20;
browser.Size = new Size(w, h);
//-----------------------------------------------------------------------------------------
// The way how to detect when the browser resizing is completed, with the timeout.
for (var i = 0; i < MaxWaitTimeSeconds * 1000 / DelayIntervalMilliseconds; i++)
{
if (browser.Bitmap != null && browser.Bitmap.Width == w && browser.Bitmap.Height == h)
{
break;
}
await Task.Delay(DelayIntervalMilliseconds);
}
//-----------------------------------------------------------------------------------------
return(true);
}
