Hi,
as there was no responded so far I tried to track the problem deeper and did a
short test
client in C/C++ to verify if I can call WKHTMLTOPDF there and generate a PDF
and to
compare to the Pharo/NativeBoost client.
Attached is the according CPP file which works and results in a PDF with the
google
homepage.
I also additionally implemented the callback functions in the Pharo wrapper and
using the error handling I noticed that the component returns "Failed loading
page http:// ..."
With that info I compared the C/C++ calls to the Pharo/NativeBoost calls more
deeply and
found out that in C/C++ the following call for an object setting works (by
returning 1):
// this returns 1 in C/C++ which is OK
int a = wkhtmltopdf_set_object_setting(os, "page",
"http://www.google.de";);
printf("object set %i",a);
while in Pharo the same call fails (by returning 0):
"The following call failed and returns 0 instead of 1"
self setObjectSetting: 'page' to: 'http://www.google.de' in: os.
I checked how I wrapped this API call again and again - it is fine from my side:
setObjectSetting: aName to: value in: settings
<primitive: #primitiveNativeCall module: #NativeBoostPlugin>
^NBFFICallout stdcall: #(int
wkhtmltopdf_set_object_setting(wkhtmltopdf_object_settings* settings, char*
aName, char* value)) module: 'wkhtmltox.dll'
and I still have no idea why it fails.
Especially because "wkhtmltopdf_set_object_setting" function is not different
from "wkhtmltopdf_set_global_setting" which is exactly the same way wrapped,
works
and returns 1 in exactly the same example.
I would really appreciate if someone could have a second look...
To reproduce on Windows:
1. Download the 32 bit version of WKHTML from http://wkhtmltopdf.org and
install it
2. Copy the "wkhtmltox.dll" to either the folder of the VM executable
or the Windows directory so it can be found
3. Load the package WKHTML2PDF-Core-TorstenBergmann.7
from http://smalltalkhub.com/#!/~TorstenBergmann/WKHTML2PDF into Pharo
3.0#30848
4. Check the Transcript while evaluating:
WKPDFLibrary example
One can see that within this code #setObjectSetting:to:in: fails while
#setGlobalSetting:to:in:
works.
Maybe I just do not see the obvious. Help is appreciated. Thanks in advance!
bye
T.
/*
* File: main.cpp
* Author: TB
*
* Created on 22. Mai 2014, 22:40
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
extern "C" {
#include <wkhtmltox\pdf.h>
}
void progress_changed(wkhtmltopdf_converter* c, int p){
printf("%3d%%\r", p);
fflush(stdout);
}
void phase_changed(wkhtmltopdf_converter* c){
int phase = wkhtmltopdf_current_phase(c);
printf("%s\n", wkhtmltopdf_phase_description(c,phase));
}
void error(wkhtmltopdf_converter* c, const char* msg){
fprintf(stderr, "Error: %s\n", msg);
}
void warning(wkhtmltopdf_converter* c, const char* msg){
fprintf(stderr, "Warning: %s\n", msg);
}
int main(int argc, char** argv) {
wkhtmltopdf_global_settings* gs;
wkhtmltopdf_object_settings* os;
wkhtmltopdf_converter* c;
wkhtmltopdf_init(false);
gs = wkhtmltopdf_create_global_settings();
wkhtmltopdf_set_global_setting(gs, "out", "c:\\temp\\test.pdf");
os = wkhtmltopdf_create_object_settings();
// this returns 1 in C/C++ which is OK
int a = wkhtmltopdf_set_object_setting(os, "page",
"http://www.google.de";);
printf("object set %i",a);
c = wkhtmltopdf_create_converter(gs);
wkhtmltopdf_set_progress_changed_callback(c, progress_changed);
wkhtmltopdf_set_phase_changed_callback(c, phase_changed);
wkhtmltopdf_set_error_callback(c, error);
wkhtmltopdf_set_warning_callback(c, warning);
wkhtmltopdf_add_object(c, os, NULL);
if( !wkhtmltopdf_convert(c) )
fprintf(stderr, "Convertion failed!");
printf("httpErrorCode: %d\n", wkhtmltopdf_http_error_code(c));
wkhtmltopdf_destroy_converter(c);
wkhtmltopdf_deinit();
return 0;
}
