public static extern void wkhtmltopdf_set_warning_callback(
IntPtr converter,
wkhtmltopdf_str_callback cb);
private byte[] _Convert(string inputHtml)
{
var converter = IntPtr.Zero;
var inputHtmlUtf8Ptr = IntPtr.Zero;
var errorCb = new wkhtmltopdf_str_callback(OnError);
var warnCb = new wkhtmltopdf_str_callback(OnWarning);
var phaseCb = new wkhtmltopdf_void_callback(OnPhaseChanged);
var progressCb = new wkhtmltopdf_int_callback(OnProgressChanged);
var finishCb = new wkhtmltopdf_bool_callback(OnFinished);
try
{
var gSettings = _BuildGlobalSettings();
var oSettings = _BuildObjectsettings();
inputHtmlUtf8Ptr = Marshaller.StringToUtf8Ptr(inputHtml);
converter = _BuildConverter(gSettings, oSettings, inputHtmlUtf8Ptr);
_errorString = new StringBuilder();
wkhtmltopdf_set_error_callback(converter, errorCb);
wkhtmltopdf_set_warning_callback(converter, warnCb);
wkhtmltopdf_set_phase_changed_callback(converter, phaseCb);
wkhtmltopdf_set_progress_changed_callback(converter, progressCb);
wkhtmltopdf_set_finished_callback(converter, finishCb);
OnBegin(wkhtmltopdf_phase_count(converter));
if (!wkhtmltopdf_convert(converter))
{
var msg = string.Format("HtmlToPdf conversion failed: {0}", _errorString.ToString());
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 = wkhtmltopdf_get_output(converter, out tmp);
var output = new byte[len];
Marshal.Copy(tmp, output, 0, output.Length);
return(output);
}
finally
{
if (converter != IntPtr.Zero)
{
wkhtmltopdf_set_error_callback(converter, null);
wkhtmltopdf_set_warning_callback(converter, null);
wkhtmltopdf_set_phase_changed_callback(converter, null);
wkhtmltopdf_set_progress_changed_callback(converter, null);
wkhtmltopdf_set_finished_callback(converter, null);
wkhtmltopdf_destroy_converter(converter);
}
if (inputHtmlUtf8Ptr != IntPtr.Zero)
{
Marshaller.FreeUtf8Ptr(inputHtmlUtf8Ptr);
}
}
}
public static extern void wkhtmltopdf_set_warning_callback(IntPtr converter, [MarshalAs(UnmanagedType.FunctionPtr)] wkhtmltopdf_str_callback cb);
private byte[] _Convert(string inputHtml)
{
var converter = IntPtr.Zero;
var inputHtmlUtf8Ptr = IntPtr.Zero;
var errorCb = new wkhtmltopdf_str_callback(OnError);
var warnCb = new wkhtmltopdf_str_callback(OnWarning);
var phaseCb = new wkhtmltopdf_void_callback(OnPhaseChanged);
var progressCb = new wkhtmltopdf_int_callback(OnProgressChanged);
var finishCb = new wkhtmltopdf_bool_callback(OnFinished);
try
{
var gSettings = _BuildGlobalSettings();
var oSettings = _BuildObjectsettings();
inputHtmlUtf8Ptr = Marshaller.StringToUtf8Ptr(inputHtml);
converter = _BuildConverter(gSettings, oSettings, inputHtmlUtf8Ptr);
_errorString = new StringBuilder();
wkhtmltopdf_set_error_callback(converter, errorCb);
wkhtmltopdf_set_warning_callback(converter, warnCb);
wkhtmltopdf_set_phase_changed_callback(converter, phaseCb);
wkhtmltopdf_set_progress_changed_callback(converter, progressCb);
wkhtmltopdf_set_finished_callback(converter, finishCb);
OnBegin(wkhtmltopdf_phase_count(converter));
if (!wkhtmltopdf_convert(converter))
{
var msg = string.Format("HtmlToPdf conversion failed: {0}", _errorString.ToString());
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 = wkhtmltopdf_get_output(converter, out tmp);
var output = new byte[len];
Marshal.Copy(tmp, output, 0, output.Length);
return output;
}
finally
{
if (converter != IntPtr.Zero)
{
wkhtmltopdf_set_error_callback(converter, null);
wkhtmltopdf_set_warning_callback(converter, null);
wkhtmltopdf_set_phase_changed_callback(converter, null);
wkhtmltopdf_set_progress_changed_callback(converter, null);
wkhtmltopdf_set_finished_callback(converter, null);
wkhtmltopdf_destroy_converter(converter);
}
if (inputHtmlUtf8Ptr != IntPtr.Zero)
{
Marshaller.FreeUtf8Ptr(inputHtmlUtf8Ptr);
}
}
}
