public static extern void wkhtmltoimage_set_finished_callback(IntPtr converter, [MarshalAs(UnmanagedType.FunctionPtr)] wkhtmltoimage_bool_callback cb);
private byte[] _Convert(string inputHtml) {
var converter = IntPtr.Zero;
var inputHtmlUtf8Ptr = IntPtr.Zero;
var errorCb = new wkhtmltoimage_str_callback(OnError);
var warnCb = new wkhtmltoimage_str_callback(OnWarning);
var phaseCb = new wkhtmltoimage_void_callback(OnPhaseChanged);
var progressCb = new wkhtmltoimage_int_callback(OnProgressChanged);
var finishCb = new wkhtmltoimage_bool_callback(OnFinished);
try {
var gSettings = _BuildGlobalSettings();
//var oSettings = _BuildObjectsettings();
inputHtmlUtf8Ptr = Marshaller.StringToUtf8Ptr(inputHtml);
converter = _BuildConverter(gSettings, inputHtmlUtf8Ptr);
_errorString = new StringBuilder();
wkhtmltoimage_set_error_callback(converter, errorCb);
wkhtmltoimage_set_warning_callback(converter, warnCb);
wkhtmltoimage_set_phase_changed_callback(converter, phaseCb);
wkhtmltoimage_set_progress_changed_callback(converter, progressCb);
wkhtmltoimage_set_finished_callback(converter, finishCb);
OnBegin(wkhtmltoimage_phase_count(converter));
if (!wkhtmltoimage_convert(converter)) {
var msg = string.Format("HtmlToPdf conversion failed: {0}", _errorString.ToString());
throw new ApplicationException(msg);
}
if (!string.IsNullOrEmpty(GlobalSettings.Out))
return null;
_Log.LogDebug("CONVERSION DONE.. getting output.");
// Get output from internal buffer..
IntPtr tmp = IntPtr.Zero;
var len = wkhtmltoimage_get_output(converter, out tmp);
var output = new byte[len];
Marshal.Copy(tmp, output, 0, output.Length);
return output;
} finally {
if (converter != IntPtr.Zero) {
wkhtmltoimage_set_error_callback(converter, null);
wkhtmltoimage_set_warning_callback(converter, null);
wkhtmltoimage_set_phase_changed_callback(converter, null);
wkhtmltoimage_set_progress_changed_callback(converter, null);
wkhtmltoimage_set_finished_callback(converter, null);
wkhtmltoimage_destroy_converter(converter);
}
if (inputHtmlUtf8Ptr != IntPtr.Zero) {
Marshaller.FreeUtf8Ptr(inputHtmlUtf8Ptr);
}
}
}
