source: trunk/src/gui/painting/qcups.cpp@ 895

Last change on this file since 895 was 846, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.
File size: 13.5 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation (qt-info@nokia.com)
6**
7** This file is part of the QtGui module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
37** Nokia at qt-info@nokia.com.
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41#include <qdebug.h>
42#include "qcups_p.h"
43
44#ifndef QT_NO_CUPS
45
46#ifndef QT_LINUXBASE // LSB merges everything into cups.h
47# include <cups/language.h>
48#endif
49#include <qtextcodec.h>
50
51QT_BEGIN_NAMESPACE
52
53#ifndef Q_WS_PM
54
55typedef int (*CupsGetDests)(cups_dest_t **dests);
56typedef void (*CupsFreeDests)(int num_dests, cups_dest_t *dests);
57typedef const char* (*CupsGetPPD)(const char *printer);
58typedef int (*CupsMarkOptions)(ppd_file_t *ppd, int num_options, cups_option_t *options);
59typedef ppd_file_t* (*PPDOpenFile)(const char *filename);
60typedef void (*PPDMarkDefaults)(ppd_file_t *ppd);
61typedef int (*PPDMarkOption)(ppd_file_t *ppd, const char *keyword, const char *option);
62typedef void (*PPDClose)(ppd_file_t *ppd);
63typedef int (*PPDMarkOption)(ppd_file_t *ppd, const char *keyword, const char *option);
64typedef void (*CupsFreeOptions)(int num_options, cups_option_t *options);
65typedef void (*CupsSetDests)(int num_dests, cups_dest_t *dests);
66typedef cups_lang_t* (*CupsLangGet)(const char *language);
67typedef const char* (*CupsLangEncoding)(cups_lang_t *language);
68typedef int (*CupsAddOption)(const char *name, const char *value, int num_options, cups_option_t **options);
69typedef int (*CupsTempFd)(char *name, int len);
70typedef int (*CupsPrintFile)(const char * name, const char * filename, const char * title, int num_options, cups_option_t * options);
71
72static bool cupsLoaded = false;
73static int qt_cups_num_printers = 0;
74static CupsGetDests _cupsGetDests = 0;
75static CupsFreeDests _cupsFreeDests = 0;
76static CupsGetPPD _cupsGetPPD = 0;
77static PPDOpenFile _ppdOpenFile = 0;
78static PPDMarkDefaults _ppdMarkDefaults = 0;
79static PPDClose _ppdClose = 0;
80static CupsMarkOptions _cupsMarkOptions = 0;
81static PPDMarkOption _ppdMarkOption = 0;
82static CupsFreeOptions _cupsFreeOptions = 0;
83static CupsSetDests _cupsSetDests = 0;
84static CupsLangGet _cupsLangGet = 0;
85static CupsLangEncoding _cupsLangEncoding = 0;
86static CupsAddOption _cupsAddOption = 0;
87static CupsTempFd _cupsTempFd = 0;
88static CupsPrintFile _cupsPrintFile = 0;
89
90#else // ifndef Q_WS_PM
91
92// On OS/2, we link to libcups statically
93
94static bool cupsLoaded = false;
95static int qt_cups_num_printers = 0;
96
97#define _cupsGetDests cupsGetDests
98#define _cupsFreeDests cupsFreeDests
99#define _cupsGetPPD cupsGetPPD
100#define _cupsLangGet cupsLangGet
101#define _cupsLangEncoding cupsLangEncoding
102#define _ppdOpenFile ppdOpenFile
103#define _ppdMarkDefaults ppdMarkDefaults
104#define _ppdClose ppdClose
105#define _cupsMarkOptions cupsMarkOptions
106#define _ppdMarkOption ppdMarkOption
107#define _cupsFreeOptions cupsFreeOptions
108#define _cupsSetDests cupsSetDests
109#define _cupsAddOption cupsAddOption
110#define _cupsTempFd cupsTempFd
111#define _cupsPrintFile cupsPrintFile
112
113#endif // ifndef Q_WS_PM
114
115static void resolveCups()
116{
117#ifndef Q_WS_PM
118 QLibrary cupsLib(QLatin1String("cups"), 2);
119 if(cupsLib.load()) {
120 _cupsGetDests = (CupsGetDests) cupsLib.resolve("cupsGetDests");
121 _cupsFreeDests = (CupsFreeDests) cupsLib.resolve("cupsFreeDests");
122 _cupsGetPPD = (CupsGetPPD) cupsLib.resolve("cupsGetPPD");
123 _cupsLangGet = (CupsLangGet) cupsLib.resolve("cupsLangGet");
124 _cupsLangEncoding = (CupsLangEncoding) cupsLib.resolve("cupsLangEncoding");
125 _ppdOpenFile = (PPDOpenFile) cupsLib.resolve("ppdOpenFile");
126 _ppdMarkDefaults = (PPDMarkDefaults) cupsLib.resolve("ppdMarkDefaults");
127 _ppdClose = (PPDClose) cupsLib.resolve("ppdClose");
128 _cupsMarkOptions = (CupsMarkOptions) cupsLib.resolve("cupsMarkOptions");
129 _ppdMarkOption = (PPDMarkOption) cupsLib.resolve("ppdMarkOption");
130 _cupsFreeOptions = (CupsFreeOptions) cupsLib.resolve("cupsFreeOptions");
131 _cupsSetDests = (CupsSetDests) cupsLib.resolve("cupsSetDests");
132 _cupsAddOption = (CupsAddOption) cupsLib.resolve("cupsAddOption");
133 _cupsTempFd = (CupsTempFd) cupsLib.resolve("cupsTempFd");
134 _cupsPrintFile = (CupsPrintFile) cupsLib.resolve("cupsPrintFile");
135
136 if (_cupsGetDests && _cupsFreeDests) {
137#endif
138 cups_dest_t *printers;
139 int num_printers = _cupsGetDests(&printers);
140 if (num_printers)
141 _cupsFreeDests(num_printers, printers);
142 qt_cups_num_printers = num_printers;
143#ifndef Q_WS_PM
144 }
145 }
146#endif
147 cupsLoaded = true;
148}
149
150// ================ CUPS Support class ========================
151
152QCUPSSupport::QCUPSSupport()
153 :
154 prnCount(0),
155 printers(0),
156 page_sizes(0),
157 currPrinterIndex(0),
158 currPPD(0)
159{
160 if (!cupsLoaded)
161 resolveCups();
162
163 // getting all available printers
164 if (!isAvailable())
165 return;
166
167 prnCount = _cupsGetDests(&printers);
168
169 for (int i = 0; i < prnCount; ++i) {
170 if (printers[i].is_default) {
171 currPrinterIndex = i;
172 setCurrentPrinter(i);
173 break;
174 }
175 }
176
177#ifndef QT_NO_TEXTCODEC
178 cups_lang_t *cupsLang = _cupsLangGet(0);
179 codec = QTextCodec::codecForName(_cupsLangEncoding(cupsLang));
180 if (!codec)
181 codec = QTextCodec::codecForLocale();
182#endif
183}
184
185QCUPSSupport::~QCUPSSupport()
186{
187 if (currPPD)
188 _ppdClose(currPPD);
189 if (prnCount)
190 _cupsFreeDests(prnCount, printers);
191}
192
193int QCUPSSupport::availablePrintersCount() const
194{
195 return prnCount;
196}
197
198const cups_dest_t* QCUPSSupport::availablePrinters() const
199{
200 return printers;
201}
202
203const ppd_file_t* QCUPSSupport::currentPPD() const
204{
205 return currPPD;
206}
207
208const ppd_file_t* QCUPSSupport::setCurrentPrinter(int index)
209{
210 Q_ASSERT(index >= 0 && index <= prnCount);
211 if (index == prnCount)
212 return 0;
213
214 currPrinterIndex = index;
215
216 if (currPPD)
217 _ppdClose(currPPD);
218 currPPD = 0;
219 page_sizes = 0;
220
221 const char *ppdFile = _cupsGetPPD(printers[index].name);
222
223 if (!ppdFile)
224 return 0;
225
226 currPPD = _ppdOpenFile(ppdFile);
227 unlink(ppdFile);
228
229 // marking default options
230 _ppdMarkDefaults(currPPD);
231
232 // marking options explicitly set
233 _cupsMarkOptions(currPPD, printers[currPrinterIndex].num_options, printers[currPrinterIndex].options);
234
235 // getting pointer to page sizes
236 page_sizes = ppdOption("PageSize");
237
238 return currPPD;
239}
240
241int QCUPSSupport::currentPrinterIndex() const
242{
243 return currPrinterIndex;
244}
245
246bool QCUPSSupport::isAvailable()
247{
248 if(!cupsLoaded)
249 resolveCups();
250
251 return
252#ifndef Q_WS_PM
253 _cupsGetDests &&
254 _cupsFreeDests &&
255 _cupsGetPPD &&
256 _ppdOpenFile &&
257 _ppdMarkDefaults &&
258 _ppdClose &&
259 _cupsMarkOptions &&
260 _ppdMarkOption &&
261 _cupsFreeOptions &&
262 _cupsSetDests &&
263 _cupsLangGet &&
264 _cupsLangEncoding &&
265 _cupsAddOption &&
266#endif
267 (qt_cups_num_printers > 0);
268}
269
270const ppd_option_t* QCUPSSupport::ppdOption(const char *key) const
271{
272 if (currPPD) {
273 for (int gr = 0; gr < currPPD->num_groups; ++gr) {
274 for (int opt = 0; opt < currPPD->groups[gr].num_options; ++opt) {
275 if (qstrcmp(currPPD->groups[gr].options[opt].keyword, key) == 0)
276 return &currPPD->groups[gr].options[opt];
277 }
278 }
279 }
280 return 0;
281}
282
283const cups_option_t* QCUPSSupport::printerOption(const QString &key) const
284{
285 for (int i = 0; i < printers[currPrinterIndex].num_options; ++i) {
286 if (QLatin1String(printers[currPrinterIndex].options[i].name) == key)
287 return &printers[currPrinterIndex].options[i];
288 }
289 return 0;
290}
291
292const ppd_option_t* QCUPSSupport::pageSizes() const
293{
294 return page_sizes;
295}
296
297int QCUPSSupport::markOption(const char* name, const char* value)
298{
299 return _ppdMarkOption(currPPD, name, value);
300}
301
302void QCUPSSupport::saveOptions(QList<const ppd_option_t*> options, QList<const char*> markedOptions)
303{
304 int oldOptionCount = printers[currPrinterIndex].num_options;
305 cups_option_t* oldOptions = printers[currPrinterIndex].options;
306
307 int newOptionCount = 0;
308 cups_option_t* newOptions = 0;
309
310 // copying old options that are not on the new list
311 for (int i = 0; i < oldOptionCount; ++i) {
312 bool contains = false;
313 for (int j = 0; j < options.count(); ++j) {
314 if (qstrcmp(options.at(j)->keyword, oldOptions[i].name) == 0) {
315 contains = true;
316 break;
317 }
318 }
319
320 if (!contains) {
321 newOptionCount = _cupsAddOption(oldOptions[i].name, oldOptions[i].value, newOptionCount, &newOptions);
322 }
323 }
324
325 // we can release old option list
326 _cupsFreeOptions(oldOptionCount, oldOptions);
327
328 // adding marked options
329 for (int i = 0; i < markedOptions.count(); ++i) {
330 const char* name = markedOptions.at(i);
331 ++i;
332 newOptionCount = _cupsAddOption(name, markedOptions.at(i), newOptionCount, &newOptions);
333 }
334
335 // placing the new option list
336 printers[currPrinterIndex].num_options = newOptionCount;
337 printers[currPrinterIndex].options = newOptions;
338
339 // saving new default values
340 _cupsSetDests(prnCount, printers);
341}
342
343QRect QCUPSSupport::paperRect(const char *choice) const
344{
345 if (!currPPD)
346 return QRect();
347 for (int i = 0; i < currPPD->num_sizes; ++i) {
348 if (qstrcmp(currPPD->sizes[i].name, choice) == 0)
349 return QRect(0, 0, qRound(currPPD->sizes[i].width), qRound(currPPD->sizes[i].length));
350 }
351 return QRect();
352}
353
354QRect QCUPSSupport::pageRect(const char *choice) const
355{
356 if (!currPPD)
357 return QRect();
358 for (int i = 0; i < currPPD->num_sizes; ++i) {
359 if (qstrcmp(currPPD->sizes[i].name, choice) == 0)
360 return QRect(qRound(currPPD->sizes[i].left),
361 qRound(currPPD->sizes[i].length - currPPD->sizes[i].top),
362 qRound(currPPD->sizes[i].right - currPPD->sizes[i].left),
363 qRound(currPPD->sizes[i].top - currPPD->sizes[i].bottom));
364 }
365 return QRect();
366}
367
368QStringList QCUPSSupport::options() const
369{
370 QStringList list;
371 collectMarkedOptions(list);
372 return list;
373}
374
375bool QCUPSSupport::printerHasPPD(const char *printerName)
376{
377 if (!isAvailable())
378 return false;
379 const char *ppdFile = _cupsGetPPD(printerName);
380 if (ppdFile)
381 unlink(ppdFile);
382 return (ppdFile != 0);
383}
384
385QString QCUPSSupport::unicodeString(const char *s)
386{
387#ifndef QT_NO_TEXTCODEC
388 return codec->toUnicode(s);
389#else
390 return QLatin1String(s);
391#endif
392}
393
394void QCUPSSupport::collectMarkedOptions(QStringList& list, const ppd_group_t* group) const
395{
396 if (group == 0) {
397 if (!currPPD)
398 return;
399 for (int i = 0; i < currPPD->num_groups; ++i) {
400 collectMarkedOptions(list, &currPPD->groups[i]);
401 collectMarkedOptionsHelper(list, &currPPD->groups[i]);
402 }
403 } else {
404 for (int i = 0; i < group->num_subgroups; ++i)
405 collectMarkedOptionsHelper(list, &group->subgroups[i]);
406 }
407}
408
409void QCUPSSupport::collectMarkedOptionsHelper(QStringList& list, const ppd_group_t* group) const
410{
411 for (int i = 0; i < group->num_options; ++i) {
412 for (int j = 0; j < group->options[i].num_choices; ++j) {
413 if (group->options[i].choices[j].marked == 1 && qstrcmp(group->options[i].choices[j].choice, group->options[i].defchoice) != 0)
414 list << QString::fromLocal8Bit(group->options[i].keyword) << QString::fromLocal8Bit(group->options[i].choices[j].choice);
415 }
416 }
417}
418
419QPair<int, QString> QCUPSSupport::tempFd()
420{
421 char filename[512];
422 int fd = _cupsTempFd(filename, 512);
423 return QPair<int, QString>(fd, QString::fromLocal8Bit(filename));
424}
425
426// Prints the given file and returns a job id.
427int QCUPSSupport::printFile(const char * printerName, const char * filename, const char * title,
428 int num_options, cups_option_t * options)
429{
430 return _cupsPrintFile(printerName, filename, title, num_options, options);
431}
432
433QT_END_NAMESPACE
434
435#endif // QT_NO_CUPS
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