|
1 /**************************************************************************** |
|
2 ** |
|
3 ** Copyright (C) 2009 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 ** No Commercial Usage |
|
11 ** This file contains pre-release code and may not be distributed. |
|
12 ** You may use this file in accordance with the terms and conditions |
|
13 ** contained in the Technology Preview License Agreement accompanying |
|
14 ** this package. |
|
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 ** If you have questions regarding the use of this file, please contact |
|
29 ** Nokia at qt-info@nokia.com. |
|
30 ** |
|
31 ** |
|
32 ** |
|
33 ** |
|
34 ** |
|
35 ** |
|
36 ** |
|
37 ** |
|
38 ** $QT_END_LICENSE$ |
|
39 ** |
|
40 ****************************************************************************/ |
|
41 |
|
42 /**************************************************************************** |
|
43 ** |
|
44 ** Implementation of QXIMInputContext class |
|
45 ** |
|
46 ** Copyright (C) 2003-2004 immodule for Qt Project. All rights reserved. |
|
47 ** |
|
48 ** This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own |
|
49 ** license. You may use this file under your Qt license. Following |
|
50 ** description is copied from their original file headers. Contact |
|
51 ** immodule-qt@freedesktop.org if any conditions of this licensing are |
|
52 ** not clear to you. |
|
53 ** |
|
54 ****************************************************************************/ |
|
55 |
|
56 #include "qplatformdefs.h" |
|
57 #include "qdebug.h" |
|
58 #include "qximinputcontext_p.h" |
|
59 |
|
60 #if !defined(QT_NO_IM) |
|
61 |
|
62 QT_BEGIN_NAMESPACE |
|
63 |
|
64 #if !defined(QT_NO_XIM) |
|
65 |
|
66 QT_BEGIN_INCLUDE_NAMESPACE |
|
67 #include "qplatformdefs.h" |
|
68 |
|
69 #include "qapplication.h" |
|
70 #include "qwidget.h" |
|
71 #include "qstring.h" |
|
72 #include "qlist.h" |
|
73 #include "qtextcodec.h" |
|
74 #include "qevent.h" |
|
75 #include "qtextformat.h" |
|
76 |
|
77 #include "qx11info_x11.h" |
|
78 |
|
79 #include <stdlib.h> |
|
80 #include <limits.h> |
|
81 QT_END_INCLUDE_NAMESPACE |
|
82 |
|
83 // #define QT_XIM_DEBUG |
|
84 #ifdef QT_XIM_DEBUG |
|
85 #define XIM_DEBUG qDebug |
|
86 #else |
|
87 #define XIM_DEBUG if (0) qDebug |
|
88 #endif |
|
89 |
|
90 // from qapplication_x11.cpp |
|
91 // #### move to X11 struct |
|
92 extern XIMStyle qt_xim_preferred_style; |
|
93 extern char *qt_ximServer; |
|
94 extern int qt_ximComposingKeycode; |
|
95 extern QTextCodec * qt_input_mapper; |
|
96 |
|
97 XIMStyle QXIMInputContext::xim_style = 0; |
|
98 // moved from qapplication_x11.cpp |
|
99 static const XIMStyle xim_default_style = XIMPreeditCallbacks | XIMStatusNothing; |
|
100 |
|
101 |
|
102 extern "C" { |
|
103 #ifdef USE_X11R6_XIM |
|
104 static void xim_create_callback(XIM /*im*/, |
|
105 XPointer client_data, |
|
106 XPointer /*call_data*/) |
|
107 { |
|
108 QXIMInputContext *qic = reinterpret_cast<QXIMInputContext *>(client_data); |
|
109 // qDebug("xim_create_callback"); |
|
110 qic->create_xim(); |
|
111 } |
|
112 |
|
113 static void xim_destroy_callback(XIM /*im*/, |
|
114 XPointer client_data, |
|
115 XPointer /*call_data*/) |
|
116 { |
|
117 QXIMInputContext *qic = reinterpret_cast<QXIMInputContext *>(client_data); |
|
118 // qDebug("xim_destroy_callback"); |
|
119 qic->close_xim(); |
|
120 XRegisterIMInstantiateCallback(X11->display, 0, 0, 0, |
|
121 (XIMProc) xim_create_callback, reinterpret_cast<char *>(qic)); |
|
122 } |
|
123 #endif // USE_X11R6_XIM |
|
124 |
|
125 static int xic_start_callback(XIC, XPointer client_data, XPointer) { |
|
126 QXIMInputContext *qic = (QXIMInputContext *) client_data; |
|
127 if (!qic) { |
|
128 XIM_DEBUG("xic_start_callback: no qic"); |
|
129 return 0; |
|
130 } |
|
131 QXIMInputContext::ICData *data = qic->icData(); |
|
132 if (!data) { |
|
133 XIM_DEBUG("xic_start_callback: no ic data"); |
|
134 return 0; |
|
135 } |
|
136 XIM_DEBUG("xic_start_callback"); |
|
137 |
|
138 data->clear(); |
|
139 data->composing = true; |
|
140 |
|
141 return 0; |
|
142 } |
|
143 |
|
144 static int xic_draw_callback(XIC, XPointer client_data, XPointer call_data) { |
|
145 QXIMInputContext *qic = (QXIMInputContext *) client_data; |
|
146 if (!qic) { |
|
147 XIM_DEBUG("xic_draw_callback: no qic"); |
|
148 return 0; |
|
149 } |
|
150 QXIMInputContext::ICData *data = qic->icData(); |
|
151 if (!data) { |
|
152 XIM_DEBUG("xic_draw_callback: no ic data"); |
|
153 return 0; |
|
154 } |
|
155 XIM_DEBUG("xic_draw_callback"); |
|
156 |
|
157 |
|
158 if(!data->composing) { |
|
159 data->clear(); |
|
160 data->composing = true; |
|
161 } |
|
162 |
|
163 XIMPreeditDrawCallbackStruct *drawstruct = (XIMPreeditDrawCallbackStruct *) call_data; |
|
164 XIMText *text = (XIMText *) drawstruct->text; |
|
165 int cursor = drawstruct->caret, sellen = 0, selstart = 0; |
|
166 |
|
167 if (!drawstruct->caret && !drawstruct->chg_first && !drawstruct->chg_length && !text) { |
|
168 if(data->text.isEmpty()) { |
|
169 XIM_DEBUG("compose emptied"); |
|
170 // if the composition string has been emptied, we need |
|
171 // to send an InputMethodEnd event |
|
172 QInputMethodEvent e; |
|
173 qic->sendEvent(e); |
|
174 data->clear(); |
|
175 |
|
176 // if the commit string has coming after here, InputMethodStart |
|
177 // will be sent dynamically |
|
178 } |
|
179 return 0; |
|
180 } |
|
181 |
|
182 if (text) { |
|
183 char *str = 0; |
|
184 if (text->encoding_is_wchar) { |
|
185 int l = wcstombs(NULL, text->string.wide_char, text->length); |
|
186 if (l != -1) { |
|
187 str = new char[l + 1]; |
|
188 wcstombs(str, text->string.wide_char, l); |
|
189 str[l] = 0; |
|
190 } |
|
191 } else |
|
192 str = text->string.multi_byte; |
|
193 |
|
194 if (!str) |
|
195 return 0; |
|
196 |
|
197 QString s = QString::fromLocal8Bit(str); |
|
198 |
|
199 if (text->encoding_is_wchar) |
|
200 delete [] str; |
|
201 |
|
202 if (drawstruct->chg_length < 0) |
|
203 data->text.replace(drawstruct->chg_first, INT_MAX, s); |
|
204 else |
|
205 data->text.replace(drawstruct->chg_first, drawstruct->chg_length, s); |
|
206 |
|
207 if (data->selectedChars.size() < data->text.length()) { |
|
208 // expand the selectedChars array if the compose string is longer |
|
209 int from = data->selectedChars.size(); |
|
210 data->selectedChars.resize(data->text.length()); |
|
211 for (int x = from; x < data->selectedChars.size(); ++x) |
|
212 data->selectedChars.clearBit(x); |
|
213 } |
|
214 |
|
215 // determine if the changed chars are selected based on text->feedback |
|
216 for (int x = 0; x < text->length; ++x) |
|
217 data->selectedChars.setBit(x + drawstruct->chg_first, |
|
218 (text->feedback ? (text->feedback[x] & XIMReverse) : 0)); |
|
219 |
|
220 // figure out where the selection starts, and how long it is |
|
221 bool started = false; |
|
222 for (int x = 0; x < qMin(data->selectedChars.size(), data->text.length()); ++x) { |
|
223 if (started) { |
|
224 if (data->selectedChars.testBit(x)) ++sellen; |
|
225 else break; |
|
226 } else { |
|
227 if (data->selectedChars.testBit(x)) { |
|
228 selstart = x; |
|
229 started = true; |
|
230 sellen = 1; |
|
231 } |
|
232 } |
|
233 } |
|
234 } else { |
|
235 if (drawstruct->chg_length == 0) |
|
236 drawstruct->chg_length = -1; |
|
237 |
|
238 data->text.remove(drawstruct->chg_first, drawstruct->chg_length); |
|
239 bool qt_compose_emptied = data->text.isEmpty(); |
|
240 if (qt_compose_emptied) { |
|
241 XIM_DEBUG("compose emptied 2 text=%s", data->text.toUtf8().constData()); |
|
242 // if the composition string has been emptied, we need |
|
243 // to send an InputMethodEnd event |
|
244 QInputMethodEvent e; |
|
245 qic->sendEvent(e); |
|
246 data->clear(); |
|
247 // if the commit string has coming after here, InputMethodStart |
|
248 // will be sent dynamically |
|
249 return 0; |
|
250 } |
|
251 } |
|
252 |
|
253 XIM_DEBUG("sending compose: '%s', cursor=%d, sellen=%d", |
|
254 data->text.toUtf8().constData(), cursor, sellen); |
|
255 QList<QInputMethodEvent::Attribute> attrs; |
|
256 if (selstart > 0) |
|
257 attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, 0, selstart, |
|
258 qic->standardFormat(QInputContext::PreeditFormat)); |
|
259 if (sellen) |
|
260 attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, selstart, sellen, |
|
261 qic->standardFormat(QInputContext::SelectionFormat)); |
|
262 if (selstart + sellen < data->text.length()) |
|
263 attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, |
|
264 selstart + sellen, data->text.length() - selstart - sellen, |
|
265 qic->standardFormat(QInputContext::PreeditFormat)); |
|
266 attrs << QInputMethodEvent::Attribute(QInputMethodEvent::Cursor, cursor, sellen ? 0 : 1, QVariant()); |
|
267 QInputMethodEvent e(data->text, attrs); |
|
268 data->preeditEmpty = data->text.isEmpty(); |
|
269 qic->sendEvent(e); |
|
270 |
|
271 return 0; |
|
272 } |
|
273 |
|
274 static int xic_done_callback(XIC, XPointer client_data, XPointer) { |
|
275 QXIMInputContext *qic = (QXIMInputContext *) client_data; |
|
276 if (!qic) |
|
277 return 0; |
|
278 |
|
279 XIM_DEBUG("xic_done_callback"); |
|
280 // Don't send InputMethodEnd here. QXIMInputContext::x11FilterEvent() |
|
281 // handles InputMethodEnd with commit string. |
|
282 return 0; |
|
283 } |
|
284 } |
|
285 |
|
286 void QXIMInputContext::ICData::clear() |
|
287 { |
|
288 text = QString(); |
|
289 selectedChars.clear(); |
|
290 composing = false; |
|
291 preeditEmpty = true; |
|
292 } |
|
293 |
|
294 QXIMInputContext::ICData *QXIMInputContext::icData() const |
|
295 { |
|
296 if (QWidget *w = focusWidget()) |
|
297 return ximData.value(w->effectiveWinId()); |
|
298 return 0; |
|
299 } |
|
300 /* The cache here is needed, as X11 leaks a few kb for every |
|
301 XFreeFontSet call, so we avoid creating and deletion of fontsets as |
|
302 much as possible |
|
303 */ |
|
304 static XFontSet fontsetCache[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; |
|
305 static int fontsetRefCount = 0; |
|
306 |
|
307 static const char * const fontsetnames[] = { |
|
308 "-*-fixed-medium-r-*-*-16-*,-*-*-medium-r-*-*-16-*", |
|
309 "-*-fixed-medium-i-*-*-16-*,-*-*-medium-i-*-*-16-*", |
|
310 "-*-fixed-bold-r-*-*-16-*,-*-*-bold-r-*-*-16-*", |
|
311 "-*-fixed-bold-i-*-*-16-*,-*-*-bold-i-*-*-16-*", |
|
312 "-*-fixed-medium-r-*-*-24-*,-*-*-medium-r-*-*-24-*", |
|
313 "-*-fixed-medium-i-*-*-24-*,-*-*-medium-i-*-*-24-*", |
|
314 "-*-fixed-bold-r-*-*-24-*,-*-*-bold-r-*-*-24-*", |
|
315 "-*-fixed-bold-i-*-*-24-*,-*-*-bold-i-*-*-24-*" |
|
316 }; |
|
317 |
|
318 static XFontSet getFontSet(const QFont &f) |
|
319 { |
|
320 int i = 0; |
|
321 if (f.italic()) |
|
322 i |= 1; |
|
323 if (f.bold()) |
|
324 i |= 2; |
|
325 |
|
326 if (f.pointSize() > 20) |
|
327 i += 4; |
|
328 |
|
329 if (!fontsetCache[i]) { |
|
330 Display* dpy = X11->display; |
|
331 int missCount; |
|
332 char** missList; |
|
333 fontsetCache[i] = XCreateFontSet(dpy, fontsetnames[i], &missList, &missCount, 0); |
|
334 if(missCount > 0) |
|
335 XFreeStringList(missList); |
|
336 if (!fontsetCache[i]) { |
|
337 fontsetCache[i] = XCreateFontSet(dpy, "-*-fixed-*-*-*-*-16-*", &missList, &missCount, 0); |
|
338 if(missCount > 0) |
|
339 XFreeStringList(missList); |
|
340 if (!fontsetCache[i]) |
|
341 fontsetCache[i] = (XFontSet)-1; |
|
342 } |
|
343 } |
|
344 return (fontsetCache[i] == (XFontSet)-1) ? 0 : fontsetCache[i]; |
|
345 } |
|
346 |
|
347 |
|
348 |
|
349 QXIMInputContext::QXIMInputContext() |
|
350 { |
|
351 if (!qt_xim_preferred_style) // no configured input style, use the default |
|
352 qt_xim_preferred_style = xim_default_style; |
|
353 |
|
354 xim = 0; |
|
355 QByteArray ximServerName(qt_ximServer); |
|
356 if (qt_ximServer) |
|
357 ximServerName.prepend("@im="); |
|
358 else |
|
359 ximServerName = ""; |
|
360 |
|
361 if (!XSupportsLocale()) |
|
362 #ifndef QT_NO_DEBUG |
|
363 qWarning("Qt: Locale not supported on X server") |
|
364 #endif |
|
365 ; |
|
366 #ifdef USE_X11R6_XIM |
|
367 else if (XSetLocaleModifiers (ximServerName.constData()) == 0) |
|
368 qWarning("Qt: Cannot set locale modifiers: %s", ximServerName.constData()); |
|
369 else |
|
370 XRegisterIMInstantiateCallback(X11->display, 0, 0, 0, |
|
371 (XIMProc) xim_create_callback, reinterpret_cast<char *>(this)); |
|
372 #else // !USE_X11R6_XIM |
|
373 else if (XSetLocaleModifiers ("") == 0) |
|
374 qWarning("Qt: Cannot set locale modifiers"); |
|
375 else |
|
376 QXIMInputContext::create_xim(); |
|
377 #endif // USE_X11R6_XIM |
|
378 } |
|
379 |
|
380 |
|
381 /*!\internal |
|
382 Creates the application input method. |
|
383 */ |
|
384 void QXIMInputContext::create_xim() |
|
385 { |
|
386 ++fontsetRefCount; |
|
387 #ifndef QT_NO_XIM |
|
388 xim = XOpenIM(X11->display, 0, 0, 0); |
|
389 if (xim) { |
|
390 |
|
391 #ifdef USE_X11R6_XIM |
|
392 XIMCallback destroy; |
|
393 destroy.callback = (XIMProc) xim_destroy_callback; |
|
394 destroy.client_data = XPointer(this); |
|
395 if (XSetIMValues(xim, XNDestroyCallback, &destroy, (char *) 0) != 0) |
|
396 qWarning("Xlib doesn't support destroy callback"); |
|
397 #endif // USE_X11R6_XIM |
|
398 |
|
399 XIMStyles *styles = 0; |
|
400 XGetIMValues(xim, XNQueryInputStyle, &styles, (char *) 0, (char *) 0); |
|
401 if (styles) { |
|
402 int i; |
|
403 for (i = 0; !xim_style && i < styles->count_styles; i++) { |
|
404 if (styles->supported_styles[i] == qt_xim_preferred_style) { |
|
405 xim_style = qt_xim_preferred_style; |
|
406 break; |
|
407 } |
|
408 } |
|
409 // if the preferred input style couldn't be found, look for |
|
410 // Nothing |
|
411 for (i = 0; !xim_style && i < styles->count_styles; i++) { |
|
412 if (styles->supported_styles[i] == (XIMPreeditNothing | XIMStatusNothing)) { |
|
413 xim_style = XIMPreeditNothing | XIMStatusNothing; |
|
414 break; |
|
415 } |
|
416 } |
|
417 // ... and failing that, None. |
|
418 for (i = 0; !xim_style && i < styles->count_styles; i++) { |
|
419 if (styles->supported_styles[i] == (XIMPreeditNone | |
|
420 XIMStatusNone)) { |
|
421 xim_style = XIMPreeditNone | XIMStatusNone; |
|
422 break; |
|
423 } |
|
424 } |
|
425 |
|
426 // qDebug("QApplication: using im style %lx", xim_style); |
|
427 XFree((char *)styles); |
|
428 } |
|
429 |
|
430 if (xim_style) { |
|
431 |
|
432 #ifdef USE_X11R6_XIM |
|
433 XUnregisterIMInstantiateCallback(X11->display, 0, 0, 0, |
|
434 (XIMProc) xim_create_callback, reinterpret_cast<char *>(this)); |
|
435 #endif // USE_X11R6_XIM |
|
436 |
|
437 if (QWidget *focusWidget = QApplication::focusWidget()) { |
|
438 // reinitialize input context after the input method |
|
439 // server (like SCIM) has been launched without |
|
440 // requiring the user to manually switch focus. |
|
441 if (focusWidget->testAttribute(Qt::WA_InputMethodEnabled) |
|
442 && focusWidget->testAttribute(Qt::WA_WState_Created) |
|
443 && focusWidget->isEnabled()) |
|
444 setFocusWidget(focusWidget); |
|
445 } |
|
446 // following code fragment is not required for immodule |
|
447 // version of XIM |
|
448 #if 0 |
|
449 QWidgetList list = qApp->topLevelWidgets(); |
|
450 for (int i = 0; i < list.size(); ++i) { |
|
451 QWidget *w = list.at(i); |
|
452 w->d->createTLSysExtra(); |
|
453 } |
|
454 #endif |
|
455 } else { |
|
456 // Give up |
|
457 qWarning("No supported input style found." |
|
458 " See InputMethod documentation."); |
|
459 close_xim(); |
|
460 } |
|
461 } |
|
462 #endif // QT_NO_XIM |
|
463 } |
|
464 |
|
465 /*!\internal |
|
466 Closes the application input method. |
|
467 */ |
|
468 void QXIMInputContext::close_xim() |
|
469 { |
|
470 for(QHash<WId, ICData *>::const_iterator i = ximData.constBegin(), |
|
471 e = ximData.constEnd(); i != e; ++i) { |
|
472 ICData *data = i.value(); |
|
473 if (data->ic) |
|
474 XDestroyIC(data->ic); |
|
475 delete data; |
|
476 } |
|
477 ximData.clear(); |
|
478 |
|
479 if ( --fontsetRefCount == 0 ) { |
|
480 Display *dpy = X11->display; |
|
481 for ( int i = 0; i < 8; i++ ) { |
|
482 if ( fontsetCache[i] && fontsetCache[i] != (XFontSet)-1 ) { |
|
483 XFreeFontSet(dpy, fontsetCache[i]); |
|
484 fontsetCache[i] = 0; |
|
485 } |
|
486 } |
|
487 } |
|
488 |
|
489 setFocusWidget(0); |
|
490 xim = 0; |
|
491 } |
|
492 |
|
493 |
|
494 |
|
495 QXIMInputContext::~QXIMInputContext() |
|
496 { |
|
497 XIM old_xim = xim; // close_xim clears xim pointer. |
|
498 close_xim(); |
|
499 if (old_xim) |
|
500 XCloseIM(old_xim); |
|
501 } |
|
502 |
|
503 |
|
504 QString QXIMInputContext::identifierName() |
|
505 { |
|
506 // the name should be "xim" rather than "XIM" to be consistent |
|
507 // with corresponding immodule of GTK+ |
|
508 return QLatin1String("xim"); |
|
509 } |
|
510 |
|
511 |
|
512 QString QXIMInputContext::language() |
|
513 { |
|
514 QString language; |
|
515 if (xim) { |
|
516 QByteArray locale(XLocaleOfIM(xim)); |
|
517 |
|
518 if (locale.startsWith("zh")) { |
|
519 // Chinese language should be formed as "zh_CN", "zh_TW", "zh_HK" |
|
520 language = QLatin1String(locale.left(5)); |
|
521 } else { |
|
522 // other languages should be two-letter ISO 639 language code |
|
523 language = QLatin1String(locale.left(2)); |
|
524 } |
|
525 } |
|
526 return language; |
|
527 } |
|
528 |
|
529 void QXIMInputContext::reset() |
|
530 { |
|
531 QWidget *w = focusWidget(); |
|
532 if (!w) |
|
533 return; |
|
534 |
|
535 ICData *data = ximData.value(w->effectiveWinId()); |
|
536 if (!data) |
|
537 return; |
|
538 |
|
539 if (data->ic) { |
|
540 char *mb = XmbResetIC(data->ic); |
|
541 QInputMethodEvent e; |
|
542 if (mb) { |
|
543 e.setCommitString(QString::fromLocal8Bit(mb)); |
|
544 XFree(mb); |
|
545 data->preeditEmpty = false; // force sending an event |
|
546 } |
|
547 if (!data->preeditEmpty) { |
|
548 sendEvent(e); |
|
549 update(); |
|
550 } |
|
551 } |
|
552 data->clear(); |
|
553 } |
|
554 |
|
555 void QXIMInputContext::widgetDestroyed(QWidget *w) |
|
556 { |
|
557 QInputContext::widgetDestroyed(w); |
|
558 ICData *data = ximData.take(w->effectiveWinId()); |
|
559 if (!data) |
|
560 return; |
|
561 |
|
562 data->clear(); |
|
563 if (data->ic) |
|
564 XDestroyIC(data->ic); |
|
565 delete data; |
|
566 } |
|
567 |
|
568 void QXIMInputContext::mouseHandler(int pos, QMouseEvent *e) |
|
569 { |
|
570 if(e->type() != QEvent::MouseButtonPress) |
|
571 return; |
|
572 |
|
573 XIM_DEBUG("QXIMInputContext::mouseHandler pos=%d", pos); |
|
574 if (QWidget *w = focusWidget()) { |
|
575 ICData *data = ximData.value(w->effectiveWinId()); |
|
576 if (!data) |
|
577 return; |
|
578 if (pos < 0 || pos > data->text.length()) |
|
579 reset(); |
|
580 // ##### handle mouse position |
|
581 } |
|
582 } |
|
583 |
|
584 bool QXIMInputContext::isComposing() const |
|
585 { |
|
586 QWidget *w = focusWidget(); |
|
587 if (!w) |
|
588 return false; |
|
589 |
|
590 ICData *data = ximData.value(w->effectiveWinId()); |
|
591 if (!data) |
|
592 return false; |
|
593 return data->composing; |
|
594 } |
|
595 |
|
596 void QXIMInputContext::setFocusWidget(QWidget *w) |
|
597 { |
|
598 if (!xim) |
|
599 return; |
|
600 QWidget *oldFocus = focusWidget(); |
|
601 if (oldFocus == w) |
|
602 return; |
|
603 |
|
604 if (language() != QLatin1String("ja")) |
|
605 reset(); |
|
606 |
|
607 if (oldFocus) { |
|
608 ICData *data = ximData.value(oldFocus->effectiveWinId()); |
|
609 if (data && data->ic) |
|
610 XUnsetICFocus(data->ic); |
|
611 } |
|
612 |
|
613 QInputContext::setFocusWidget(w); |
|
614 |
|
615 if (!w || w->inputMethodHints() & (Qt::ImhExclusiveInputMask | Qt::ImhHiddenText)) |
|
616 return; |
|
617 |
|
618 ICData *data = ximData.value(w->effectiveWinId()); |
|
619 if (!data) |
|
620 data = createICData(w); |
|
621 |
|
622 if (data->ic) |
|
623 XSetICFocus(data->ic); |
|
624 |
|
625 update(); |
|
626 } |
|
627 |
|
628 |
|
629 bool QXIMInputContext::x11FilterEvent(QWidget *keywidget, XEvent *event) |
|
630 { |
|
631 int xkey_keycode = event->xkey.keycode; |
|
632 if (!keywidget->testAttribute(Qt::WA_WState_Created)) |
|
633 return false; |
|
634 if (XFilterEvent(event, keywidget->effectiveWinId())) { |
|
635 qt_ximComposingKeycode = xkey_keycode; // ### not documented in xlib |
|
636 |
|
637 update(); |
|
638 |
|
639 return true; |
|
640 } |
|
641 if (event->type != XKeyPress || event->xkey.keycode != 0) |
|
642 return false; |
|
643 |
|
644 QWidget *w = focusWidget(); |
|
645 if (keywidget != w) |
|
646 return false; |
|
647 ICData *data = ximData.value(w->effectiveWinId()); |
|
648 if (!data) |
|
649 return false; |
|
650 |
|
651 // input method has sent us a commit string |
|
652 QByteArray string; |
|
653 string.resize(513); |
|
654 KeySym key; // unused |
|
655 Status status; // unused |
|
656 QString text; |
|
657 int count = XmbLookupString(data->ic, &event->xkey, string.data(), string.size(), |
|
658 &key, &status); |
|
659 |
|
660 if (status == XBufferOverflow) { |
|
661 string.resize(count + 1); |
|
662 count = XmbLookupString(data->ic, &event->xkey, string.data(), string.size(), |
|
663 &key, &status); |
|
664 } |
|
665 if (count > 0) { |
|
666 // XmbLookupString() gave us some text, convert it to unicode |
|
667 text = qt_input_mapper->toUnicode(string.constData() , count); |
|
668 if (text.isEmpty()) { |
|
669 // codec couldn't convert to unicode? this can happen when running in the |
|
670 // C locale (or with no LANG set). try converting from latin-1 |
|
671 text = QString::fromLatin1(string.constData(), count); |
|
672 } |
|
673 } |
|
674 |
|
675 #if 0 |
|
676 if (!(xim_style & XIMPreeditCallbacks) || !isComposing()) { |
|
677 // ############### send a regular key event here! |
|
678 ; |
|
679 } |
|
680 #endif |
|
681 |
|
682 QInputMethodEvent e; |
|
683 e.setCommitString(text); |
|
684 sendEvent(e); |
|
685 data->clear(); |
|
686 |
|
687 update(); |
|
688 |
|
689 return true; |
|
690 } |
|
691 |
|
692 |
|
693 QXIMInputContext::ICData *QXIMInputContext::createICData(QWidget *w) |
|
694 { |
|
695 ICData *data = new ICData; |
|
696 data->widget = w; |
|
697 data->preeditEmpty = true; |
|
698 |
|
699 XVaNestedList preedit_attr = 0; |
|
700 XIMCallback startcallback, drawcallback, donecallback; |
|
701 |
|
702 QFont font = w->font(); |
|
703 data->fontset = getFontSet(font); |
|
704 |
|
705 if (xim_style & XIMPreeditArea) { |
|
706 XRectangle rect; |
|
707 rect.x = 0; |
|
708 rect.y = 0; |
|
709 rect.width = w->width(); |
|
710 rect.height = w->height(); |
|
711 |
|
712 preedit_attr = XVaCreateNestedList(0, |
|
713 XNArea, &rect, |
|
714 XNFontSet, data->fontset, |
|
715 (char *) 0); |
|
716 } else if (xim_style & XIMPreeditPosition) { |
|
717 XPoint spot; |
|
718 spot.x = 1; |
|
719 spot.y = 1; |
|
720 |
|
721 preedit_attr = XVaCreateNestedList(0, |
|
722 XNSpotLocation, &spot, |
|
723 XNFontSet, data->fontset, |
|
724 (char *) 0); |
|
725 } else if (xim_style & XIMPreeditCallbacks) { |
|
726 startcallback.client_data = (XPointer) this; |
|
727 startcallback.callback = (XIMProc) xic_start_callback; |
|
728 drawcallback.client_data = (XPointer) this; |
|
729 drawcallback.callback = (XIMProc)xic_draw_callback; |
|
730 donecallback.client_data = (XPointer) this; |
|
731 donecallback.callback = (XIMProc) xic_done_callback; |
|
732 |
|
733 preedit_attr = XVaCreateNestedList(0, |
|
734 XNPreeditStartCallback, &startcallback, |
|
735 XNPreeditDrawCallback, &drawcallback, |
|
736 XNPreeditDoneCallback, &donecallback, |
|
737 (char *) 0); |
|
738 } |
|
739 |
|
740 if (preedit_attr) { |
|
741 data->ic = XCreateIC(xim, |
|
742 XNInputStyle, xim_style, |
|
743 XNClientWindow, w->effectiveWinId(), |
|
744 XNPreeditAttributes, preedit_attr, |
|
745 (char *) 0); |
|
746 XFree(preedit_attr); |
|
747 } else { |
|
748 data->ic = XCreateIC(xim, |
|
749 XNInputStyle, xim_style, |
|
750 XNClientWindow, w->effectiveWinId(), |
|
751 (char *) 0); |
|
752 } |
|
753 |
|
754 if (data->ic) { |
|
755 // when resetting the input context, preserve the input state |
|
756 (void) XSetICValues(data->ic, XNResetState, XIMPreserveState, (char *) 0); |
|
757 } else { |
|
758 qWarning("Failed to create XIC"); |
|
759 } |
|
760 |
|
761 ximData[w->effectiveWinId()] = data; |
|
762 return data; |
|
763 } |
|
764 |
|
765 void QXIMInputContext::update() |
|
766 { |
|
767 QWidget *w = focusWidget(); |
|
768 if (!w) |
|
769 return; |
|
770 |
|
771 ICData *data = ximData.value(w->effectiveWinId()); |
|
772 if (!data || !data->ic) |
|
773 return; |
|
774 |
|
775 QRect r = w->inputMethodQuery(Qt::ImMicroFocus).toRect(); |
|
776 QPoint p; |
|
777 if (w->nativeParentWidget()) |
|
778 p = w->mapTo(w->nativeParentWidget(), QPoint((r.left() + r.right() + 1)/2, r.bottom())); |
|
779 else |
|
780 p = QPoint((r.left() + r.right() + 1)/2, r.bottom()); |
|
781 XPoint spot; |
|
782 spot.x = p.x(); |
|
783 spot.y = p.y(); |
|
784 |
|
785 r = w->rect(); |
|
786 XRectangle area; |
|
787 area.x = r.x(); |
|
788 area.y = r.y(); |
|
789 area.width = r.width(); |
|
790 area.height = r.height(); |
|
791 |
|
792 XFontSet fontset = getFontSet(qvariant_cast<QFont>(w->inputMethodQuery(Qt::ImFont))); |
|
793 if (data->fontset == fontset) |
|
794 fontset = 0; |
|
795 else |
|
796 data->fontset = fontset; |
|
797 |
|
798 XVaNestedList preedit_attr; |
|
799 if (fontset) |
|
800 preedit_attr = XVaCreateNestedList(0, |
|
801 XNSpotLocation, &spot, |
|
802 XNArea, &area, |
|
803 XNFontSet, fontset, |
|
804 (char *) 0); |
|
805 else |
|
806 preedit_attr = XVaCreateNestedList(0, |
|
807 XNSpotLocation, &spot, |
|
808 XNArea, &area, |
|
809 (char *) 0); |
|
810 |
|
811 XSetICValues(data->ic, XNPreeditAttributes, preedit_attr, (char *) 0); |
|
812 XFree(preedit_attr); |
|
813 } |
|
814 |
|
815 |
|
816 #else |
|
817 /* |
|
818 When QT_NO_XIM is defined, we provide a dummy implementation for |
|
819 this class. The reason for this is that the header file is moc'ed |
|
820 regardless of QT_NO_XIM. The best would be to remove the file |
|
821 completely from the pri file is QT_NO_XIM was defined, or for moc |
|
822 to understand this preprocessor directive. Since the header does |
|
823 not declare this class when QT_NO_XIM is defined, this is dead |
|
824 code. |
|
825 */ |
|
826 bool QXIMInputContext::isComposing() const { return false; } |
|
827 QString QXIMInputContext::identifierName() { return QString(); } |
|
828 void QXIMInputContext::mouseHandler(int, QMouseEvent *) {} |
|
829 void QXIMInputContext::setFocusWidget(QWidget *) {} |
|
830 void QXIMInputContext::reset() {} |
|
831 void QXIMInputContext::update() {} |
|
832 QXIMInputContext::~QXIMInputContext() {} |
|
833 void QXIMInputContext::widgetDestroyed(QWidget *) {} |
|
834 QString QXIMInputContext::language() { return QString(); } |
|
835 bool QXIMInputContext::x11FilterEvent(QWidget *, XEvent *) { return true; } |
|
836 |
|
837 #endif //QT_NO_XIM |
|
838 |
|
839 QT_END_NAMESPACE |
|
840 |
|
841 #endif //QT_NO_IM |