source: trunk/src/gui/painting/qcups.cpp@ 1009

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#include <qdebug.h>
#include "qcups_p.h"

#ifndef QT_NO_CUPS

#ifndef QT_LINUXBASE // LSB merges everything into cups.h
# include <cups/language.h>
#endif
#include <qtextcodec.h>

QT_BEGIN_NAMESPACE

#ifndef Q_WS_PM

typedef int (*CupsGetDests)(cups_dest_t **dests);
typedef void (*CupsFreeDests)(int num_dests, cups_dest_t *dests);
typedef const char* (*CupsGetPPD)(const char *printer);
typedef int (*CupsMarkOptions)(ppd_file_t *ppd, int num_options, cups_option_t *options);
typedef ppd_file_t* (*PPDOpenFile)(const char *filename);
typedef void (*PPDMarkDefaults)(ppd_file_t *ppd);
typedef int (*PPDMarkOption)(ppd_file_t *ppd, const char *keyword, const char *option);
typedef void (*PPDClose)(ppd_file_t *ppd);
typedef int (*PPDMarkOption)(ppd_file_t *ppd, const char *keyword, const char *option);
typedef void (*CupsFreeOptions)(int num_options, cups_option_t *options);
typedef void (*CupsSetDests)(int num_dests, cups_dest_t *dests);
typedef cups_lang_t* (*CupsLangGet)(const char *language);
typedef const char* (*CupsLangEncoding)(cups_lang_t *language);
typedef int (*CupsAddOption)(const char *name, const char *value, int num_options, cups_option_t **options);
typedef int (*CupsTempFd)(char *name, int len);
typedef int (*CupsPrintFile)(const char * name, const char * filename, const char * title, int num_options, cups_option_t * options);

static bool cupsLoaded = false;
static int qt_cups_num_printers = 0;
static CupsGetDests _cupsGetDests = 0;
static CupsFreeDests _cupsFreeDests = 0;
static CupsGetPPD _cupsGetPPD = 0;
static PPDOpenFile _ppdOpenFile = 0;
static PPDMarkDefaults _ppdMarkDefaults = 0;
static PPDClose _ppdClose = 0;
static CupsMarkOptions _cupsMarkOptions = 0;
static PPDMarkOption _ppdMarkOption = 0;
static CupsFreeOptions _cupsFreeOptions = 0;
static CupsSetDests _cupsSetDests = 0;
static CupsLangGet _cupsLangGet = 0;
static CupsLangEncoding _cupsLangEncoding = 0;
static CupsAddOption _cupsAddOption = 0;
static CupsTempFd _cupsTempFd = 0;
static CupsPrintFile _cupsPrintFile = 0;

#else // ifndef Q_WS_PM

// On OS/2, we link to libcups statically

static bool cupsLoaded = false;
static int qt_cups_num_printers = 0;

#define _cupsGetDests cupsGetDests
#define _cupsFreeDests cupsFreeDests
#define _cupsGetPPD cupsGetPPD
#define _cupsLangGet cupsLangGet
#define _cupsLangEncoding cupsLangEncoding
#define _ppdOpenFile ppdOpenFile
#define _ppdMarkDefaults ppdMarkDefaults
#define _ppdClose ppdClose
#define _cupsMarkOptions cupsMarkOptions
#define _ppdMarkOption ppdMarkOption
#define _cupsFreeOptions cupsFreeOptions
#define _cupsSetDests cupsSetDests
#define _cupsAddOption cupsAddOption
#define _cupsTempFd cupsTempFd
#define _cupsPrintFile cupsPrintFile

#endif // ifndef Q_WS_PM

static void resolveCups()
{
#ifndef Q_WS_PM
    QLibrary cupsLib(QLatin1String("cups"), 2);
    if(cupsLib.load()) {
        _cupsGetDests = (CupsGetDests) cupsLib.resolve("cupsGetDests");
        _cupsFreeDests = (CupsFreeDests) cupsLib.resolve("cupsFreeDests");
        _cupsGetPPD = (CupsGetPPD) cupsLib.resolve("cupsGetPPD");
        _cupsLangGet = (CupsLangGet) cupsLib.resolve("cupsLangGet");
        _cupsLangEncoding = (CupsLangEncoding) cupsLib.resolve("cupsLangEncoding");
        _ppdOpenFile = (PPDOpenFile) cupsLib.resolve("ppdOpenFile");
        _ppdMarkDefaults = (PPDMarkDefaults) cupsLib.resolve("ppdMarkDefaults");
        _ppdClose = (PPDClose) cupsLib.resolve("ppdClose");
        _cupsMarkOptions = (CupsMarkOptions) cupsLib.resolve("cupsMarkOptions");
        _ppdMarkOption = (PPDMarkOption) cupsLib.resolve("ppdMarkOption");
        _cupsFreeOptions = (CupsFreeOptions) cupsLib.resolve("cupsFreeOptions");
        _cupsSetDests = (CupsSetDests) cupsLib.resolve("cupsSetDests");
        _cupsAddOption = (CupsAddOption) cupsLib.resolve("cupsAddOption");
        _cupsTempFd = (CupsTempFd) cupsLib.resolve("cupsTempFd");
        _cupsPrintFile = (CupsPrintFile) cupsLib.resolve("cupsPrintFile");

        if (_cupsGetDests && _cupsFreeDests) {
#endif
            cups_dest_t *printers;
            int num_printers = _cupsGetDests(&printers);
            if (num_printers)
                _cupsFreeDests(num_printers, printers);
            qt_cups_num_printers = num_printers;
#ifndef Q_WS_PM
        }
    }
#endif
    cupsLoaded = true;
}

// ================ CUPS Support class ========================

QCUPSSupport::QCUPSSupport()
    :
    prnCount(0),
    printers(0),
    page_sizes(0),
    currPrinterIndex(0),
    currPPD(0)
{
    if (!cupsLoaded)
        resolveCups();

    // getting all available printers
    if (!isAvailable())
        return;

    prnCount = _cupsGetDests(&printers);

    for (int i = 0; i <  prnCount; ++i) {
        if (printers[i].is_default) {
            currPrinterIndex = i;
            setCurrentPrinter(i);
            break;
        }
    }

#ifndef QT_NO_TEXTCODEC
    cups_lang_t *cupsLang = _cupsLangGet(0);
    codec = QTextCodec::codecForName(_cupsLangEncoding(cupsLang));
    if (!codec)
        codec = QTextCodec::codecForLocale();
#endif
}

QCUPSSupport::~QCUPSSupport()
{
     if (currPPD)
        _ppdClose(currPPD);
     if (prnCount)