protected byte[] _Convert(string inputHtml)
{
var converter = IntPtr.Zero;
var inputHtmlUtf8Ptr = IntPtr.Zero;
var errorCb = new WkHtmlToXStrCallback(OnError);
var warnCb = new WkHtmlToXStrCallback(OnWarning);
var phaseCb = new WkHtmlToXVoidCallback(OnPhaseChanged);
var progressCb = new WkHtmlToXIntCallback(OnProgressChanged);
var finishCb = new WkHtmlToXBoolCallback(OnFinished);
try
{
var gSettings = _BuildGlobalSettings();
var oSettings = _BuildObjectsettings();
inputHtmlUtf8Ptr = Marshaller.StringToUtf8Ptr(inputHtml);
converter = _BuildConverter(gSettings, oSettings, inputHtmlUtf8Ptr);
_errorString = new StringBuilder();
WkHtmlToXSetErrorCallback(converter, errorCb);
WkHtmlToXSetWarningCallback(converter, warnCb);
WkHtmlToXSetPhaseChangedCallback(converter, phaseCb);
WkHtmlToXSetProgressChangedCallback(converter, progressCb);
WkHtmlToXSetFinishedCallback(converter, finishCb);
OnBegin(WkHtmlToXPhaseCount(converter));
if (!WkHtmlToXConvert(converter))
{
var msg = string.Format("Html conversion failed: {0}", _errorString);
throw new ApplicationException(msg);
}
if (!string.IsNullOrEmpty(GlobalSettings.Out))
return null;
_Log.Debug("CONVERSION DONE.. getting output.");
// Get output from internal buffer..
IntPtr tmp = IntPtr.Zero;
var len = WkHtmlToXGetOutput(converter, out tmp);
var output = new byte[len];
Marshal.Copy(tmp, output, 0, output.Length);
return output;
}
finally
{
if (converter != IntPtr.Zero)
{
WkHtmlToXSetErrorCallback(converter, null);
WkHtmlToXSetWarningCallback(converter, null);
WkHtmlToXSetPhaseChangedCallback(converter, null);
WkHtmlToXSetProgressChangedCallback(converter, null);
WkHtmlToXSetFinishedCallback(converter, null);
WkHtmlToXDestroyConverter(converter);
}
if (inputHtmlUtf8Ptr != IntPtr.Zero)
{
Marshaller.FreeUtf8Ptr(inputHtmlUtf8Ptr);
}
}
}
protected override void WkHtmlToXSetProgressChangedCallback(IntPtr converter, WkHtmlToXIntCallback cb)
{
wkhtmltopdf_set_progress_changed_callback(converter, cb);
}