1 /****************************************************************************
2 **
3 ** Copyright (C) 2015 The Qt Company Ltd.
4 ** Contact: http://www.qt.io/licensing/
5 **
6 ** This file is part of the QtGui module of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** Commercial License Usage
10 ** Licensees holding valid commercial Qt licenses may use this file in
11 ** accordance with the commercial license agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and The Qt Company. For licensing terms
14 ** and conditions see http://www.qt.io/terms-conditions. For further
15 ** information use the contact form at http://www.qt.io/contact-us.
16 **
17 ** GNU Lesser General Public License Usage
18 ** Alternatively, this file may be used under the terms of the GNU Lesser
19 ** General Public License version 2.1 or version 3 as published by the Free
20 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
21 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
22 ** following information to ensure the GNU Lesser General Public License
23 ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
24 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
25 **
26 ** As a special exception, The Qt Company gives you certain additional
27 ** rights. These rights are described in The Qt Company LGPL Exception
28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
29 **
30 ** GNU General Public License Usage
31 ** Alternatively, this file may be used under the terms of the GNU
32 ** General Public License version 3.0 as published by the Free Software
33 ** Foundation and appearing in the file LICENSE.GPL included in the
34 ** packaging of this file.  Please review the following information to
35 ** ensure the GNU General Public License version 3.0 requirements will be
36 ** met: http://www.gnu.org/copyleft/gpl.html.
37 **
38 ** $QT_END_LICENSE$
39 **
40 ****************************************************************************/
41 #include <qconfig.h>
42 #include <qglobal.h>
43 #ifndef QT_NO_IM
44 #include <qvarlengtharray.h>
45 #include <qwidget.h>
46 #include <private/qmacinputcontext_p.h>
47 #include "qtextformat.h"
48 #include <qdebug.h>
49 #include <private/qapplication_p.h>
50 #include <private/qkeymapper_p.h>
51 
52 QT_BEGIN_NAMESPACE
53 
54 extern bool qt_sendSpontaneousEvent(QObject*, QEvent*);
55 
56 #if (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5)
57 #  define typeRefCon typeSInt32
58 #  define typeByteCount typeSInt32
59 #endif
60 
QMacInputContext(QObject * parent)61 QMacInputContext::QMacInputContext(QObject *parent)
62     : QInputContext(parent), composing(false), recursionGuard(false), textDocument(0),
63       keydownEvent(0), lastFocusWid(0)
64 {
65 //    createTextDocument();
66 }
67 
~QMacInputContext()68 QMacInputContext::~QMacInputContext()
69 {
70 #ifndef QT_MAC_USE_COCOA
71     if(textDocument)
72         DeleteTSMDocument(textDocument);
73 #endif
74 }
75 
76 void
createTextDocument()77 QMacInputContext::createTextDocument()
78 {
79 #ifndef QT_MAC_USE_COCOA
80     if(!textDocument) {
81         InterfaceTypeList itl = { kUnicodeDocument };
82         NewTSMDocument(1, itl, &textDocument, SRefCon(this));
83     }
84 #endif
85 }
86 
87 
language()88 QString QMacInputContext::language()
89 {
90     return QString();
91 }
92 
93 
mouseHandler(int pos,QMouseEvent * e)94 void QMacInputContext::mouseHandler(int pos, QMouseEvent *e)
95 {
96 #ifndef QT_MAC_USE_COCOA
97     if(e->type() != QEvent::MouseButtonPress)
98         return;
99 
100     if (!composing)
101         return;
102     if (pos < 0 || pos > currentText.length())
103         reset();
104     // ##### handle mouse position
105 #else
106     Q_UNUSED(pos);
107     Q_UNUSED(e);
108 #endif
109 }
110 
111 #if !defined QT_MAC_USE_COCOA
112 
qt_mac_compose_format()113 static QTextFormat qt_mac_compose_format()
114 {
115     QTextCharFormat ret;
116     ret.setFontUnderline(true);
117     return ret;
118 }
119 
reset()120 void QMacInputContext::reset()
121 {
122     if (recursionGuard)
123         return;
124     if (!currentText.isEmpty()){
125         QInputMethodEvent e;
126         e.setCommitString(currentText);
127         qt_sendSpontaneousEvent(focusWidget(), &e);
128         currentText = QString();
129     }
130     recursionGuard = true;
131     createTextDocument();
132     composing = false;
133     ActivateTSMDocument(textDocument);
134     FixTSMDocument(textDocument);
135     recursionGuard = false;
136 }
137 
isComposing() const138 bool QMacInputContext::isComposing() const
139 {
140     return composing;
141 }
142 #endif
143 
setFocusWidget(QWidget * w)144 void QMacInputContext::setFocusWidget(QWidget *w)
145 {
146     if (!w)
147         lastFocusWid = focusWidget();
148     createTextDocument();
149 #ifndef QT_MAC_USE_COCOA
150     if(w)
151         ActivateTSMDocument(textDocument);
152     else
153         DeactivateTSMDocument(textDocument);
154 #endif
155     QInputContext::setFocusWidget(w);
156 }
157 
158 
159 #ifndef QT_MAC_USE_COCOA
160 static EventTypeSpec input_events[] = {
161     { kEventClassTextInput, kEventTextInputUnicodeForKeyEvent },
162     { kEventClassTextInput, kEventTextInputOffsetToPos },
163     { kEventClassTextInput, kEventTextInputUpdateActiveInputArea }
164 };
165 static EventHandlerUPP input_proc_handlerUPP = 0;
166 static EventHandlerRef input_proc_handler = 0;
167 #endif
168 
169 void
initialize()170 QMacInputContext::initialize()
171 {
172 #ifndef QT_MAC_USE_COCOA
173     if(!input_proc_handler) {
174         input_proc_handlerUPP = NewEventHandlerUPP(QMacInputContext::globalEventProcessor);
175         InstallEventHandler(GetApplicationEventTarget(), input_proc_handlerUPP,
176                             GetEventTypeCount(input_events), input_events,
177                             0, &input_proc_handler);
178     }
179 #endif
180 }
181 
182 void
cleanup()183 QMacInputContext::cleanup()
184 {
185 #ifndef QT_MAC_USE_COCOA
186     if(input_proc_handler) {
187         RemoveEventHandler(input_proc_handler);
188         input_proc_handler = 0;
189     }
190     if(input_proc_handlerUPP) {
191         DisposeEventHandlerUPP(input_proc_handlerUPP);
192         input_proc_handlerUPP = 0;
193     }
194 #endif
195 }
196 
setLastKeydownEvent(EventRef event)197 void QMacInputContext::setLastKeydownEvent(EventRef event)
198 {
199     EventRef tmpEvent = keydownEvent;
200     keydownEvent = event;
201     if (keydownEvent)
202         RetainEvent(keydownEvent);
203     if (tmpEvent)
204         ReleaseEvent(tmpEvent);
205 }
206 
207 OSStatus
globalEventProcessor(EventHandlerCallRef,EventRef event,void *)208 QMacInputContext::globalEventProcessor(EventHandlerCallRef, EventRef event, void *)
209 {
210 #ifndef QT_MAC_USE_COCOA
211     QScopedLoopLevelCounter loopLevelCounter(QApplicationPrivate::instance()->threadData);
212 
213     SRefCon refcon = 0;
214     GetEventParameter(event, kEventParamTextInputSendRefCon, typeRefCon, 0,
215                       sizeof(refcon), 0, &refcon);
216     QMacInputContext *context = reinterpret_cast<QMacInputContext*>(refcon);
217 
218     bool handled_event=true;
219     UInt32 ekind = GetEventKind(event), eclass = GetEventClass(event);
220     switch(eclass) {
221     case kEventClassTextInput: {
222         handled_event = false;
223         QWidget *widget = QApplicationPrivate::focus_widget;
224         bool canCompose = widget && (!context || widget->inputContext() == context)
225                 && !(widget->inputMethodHints() & Qt::ImhDigitsOnly
226                 || widget->inputMethodHints() & Qt::ImhFormattedNumbersOnly
227                 || widget->inputMethodHints() & Qt::ImhHiddenText);
228         if(!canCompose) {
229             handled_event = false;
230         } else if(ekind == kEventTextInputOffsetToPos) {
231             if(!widget->testAttribute(Qt::WA_InputMethodEnabled)) {
232                 handled_event = false;
233                 break;
234             }
235 
236             QRect mr(widget->inputMethodQuery(Qt::ImMicroFocus).toRect());
237             QPoint mp(widget->mapToGlobal(QPoint(mr.topLeft())));
238             Point pt;
239             pt.h = mp.x();
240             pt.v = mp.y() + mr.height();
241             SetEventParameter(event, kEventParamTextInputReplyPoint, typeQDPoint,
242                               sizeof(pt), &pt);
243             handled_event = true;
244         } else if(ekind == kEventTextInputUpdateActiveInputArea) {
245             if(!widget->testAttribute(Qt::WA_InputMethodEnabled)) {
246                 handled_event = false;
247                 break;
248             }
249 
250             if (context->recursionGuard)
251                 break;
252 
253             ByteCount unilen = 0;
254             GetEventParameter(event, kEventParamTextInputSendText, typeUnicodeText,
255                               0, 0, &unilen, 0);
256             UniChar *unicode = (UniChar*)NewPtr(unilen);
257             GetEventParameter(event, kEventParamTextInputSendText, typeUnicodeText,
258                               0, unilen, 0, unicode);
259             QString text((QChar*)unicode, unilen / sizeof(UniChar));
260             DisposePtr((char*)unicode);
261 
262             ByteCount fixed_length = 0;
263             GetEventParameter(event, kEventParamTextInputSendFixLen, typeByteCount, 0,
264                               sizeof(fixed_length), 0, &fixed_length);
265             if(fixed_length == ULONG_MAX || fixed_length == unilen) {
266                 QInputMethodEvent e;
267                 e.setCommitString(text);
268                 context->currentText = QString();
269                 qt_sendSpontaneousEvent(context->focusWidget(), &e);
270                 handled_event = true;
271                 context->reset();
272             } else {
273                 ByteCount rngSize = 0;
274                 OSStatus err = GetEventParameter(event, kEventParamTextInputSendHiliteRng, typeTextRangeArray, 0,
275                                                  0, &rngSize, 0);
276                 QVarLengthArray<TextRangeArray> highlight(rngSize);
277                 if (noErr == err) {
278                     err = GetEventParameter(event, kEventParamTextInputSendHiliteRng, typeTextRangeArray, 0,
279                                             rngSize, &rngSize, highlight.data());
280                 }
281                 context->composing = true;
282                 if(fixed_length > 0) {
283                     const int qFixedLength = fixed_length / sizeof(UniChar);
284                     QList<QInputMethodEvent::Attribute> attrs;
285                     attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat,
286                                                           qFixedLength, text.length()-qFixedLength,
287                                                           qt_mac_compose_format());
288                     QInputMethodEvent e(text, attrs);
289                     context->currentText = text;
290                     e.setCommitString(text.left(qFixedLength), 0, qFixedLength);
291                     qt_sendSpontaneousEvent(widget, &e);
292                     handled_event = true;
293                 } else {
294                     /* Apple's enums that they have removed from Tiger :(
295                     enum {
296                         kCaretPosition = 1,
297                         kRawText = 2,
298                         kSelectedRawText = 3,
299                         kConvertedText = 4,
300                         kSelectedConvertedText = 5,
301                         kBlockFillText = 6,
302                         kOutlineText = 7,
303                         kSelectedText = 8
304                     };
305                     */
306 #ifndef kConvertedText
307 #define kConvertedText 4
308 #endif
309 #ifndef kCaretPosition
310 #define kCaretPosition 1
311 #endif
312                     QList<QInputMethodEvent::Attribute> attrs;
313                     if (!highlight.isEmpty()) {
314                         TextRangeArray *data = highlight.data();
315                         for (int i = 0; i < data->fNumOfRanges; ++i) {
316                             int start = data->fRange[i].fStart / sizeof(UniChar);
317                             int len = (data->fRange[i].fEnd - data->fRange[i].fStart) / sizeof(UniChar);
318                             if (data->fRange[i].fHiliteStyle == kCaretPosition) {
319                                 attrs << QInputMethodEvent::Attribute(QInputMethodEvent::Cursor, start, 0, QVariant());
320                                 continue;
321                             }
322                             QTextCharFormat format;
323                             format.setFontUnderline(true);
324                             if (data->fRange[i].fHiliteStyle == kConvertedText)
325                                 format.setUnderlineColor(Qt::gray);
326                             else
327                                 format.setUnderlineColor(Qt::black);
328                             attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, start, len, format);
329                         }
330                     } else {
331                         attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat,
332                                 0, text.length(), qt_mac_compose_format());
333                     }
334                     context->currentText = text;
335                     QInputMethodEvent e(text, attrs);
336                     qt_sendSpontaneousEvent(widget, &e);
337                     handled_event = true;
338                 }
339             }
340 #if 0
341             if(!context->composing)
342                 handled_event = false;
343 #endif
344 
345             extern bool qt_mac_eat_unicode_key; //qapplication_mac.cpp
346             qt_mac_eat_unicode_key = handled_event;
347         } else if(ekind == kEventTextInputUnicodeForKeyEvent) {
348             EventRef key_ev = 0;
349             GetEventParameter(event, kEventParamTextInputSendKeyboardEvent, typeEventRef, 0,
350                               sizeof(key_ev), 0, &key_ev);
351             QString text;
352             ByteCount unilen = 0;
353             if(GetEventParameter(key_ev, kEventParamKeyUnicodes, typeUnicodeText, 0, 0, &unilen, 0) == noErr) {
354                 UniChar *unicode = (UniChar*)NewPtr(unilen);
355                 GetEventParameter(key_ev, kEventParamKeyUnicodes, typeUnicodeText, 0, unilen, 0, unicode);
356                 text = QString((QChar*)unicode, unilen / sizeof(UniChar));
357                 DisposePtr((char*)unicode);
358             }
359             unsigned char chr = 0;
360             GetEventParameter(key_ev, kEventParamKeyMacCharCodes, typeChar, 0, sizeof(chr), 0, &chr);
361             if(!chr || chr >= 128 || (text.length() > 0 && (text.length() > 1 || text.at(0) != QLatin1Char(chr))))
362                 handled_event = !widget->testAttribute(Qt::WA_InputMethodEnabled);
363             QMacInputContext *context = qobject_cast<QMacInputContext*>(qApp->inputContext());
364             if (context && context->lastKeydownEvent()) {
365                 qt_keymapper_private()->translateKeyEvent(widget, 0, context->lastKeydownEvent(),
366                                                           0, false);
367                 context->setLastKeydownEvent(0);
368             }
369         }
370         break; }
371     default:
372         break;
373     }
374     if(!handled_event) //let the event go through
375         return eventNotHandledErr;
376 #else
377     Q_UNUSED(event);
378 #endif
379     return noErr; //we eat the event
380 }
381 
382 QT_END_NAMESPACE
383 #endif // QT_NO_IM
384