summaryrefslogtreecommitdiffstats
path: root/src/gui/kernel/qclipboard_mac.cpp
blob: 45050b278cc8b7290f143f3fdd3926893ac9080f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qclipboard.h"
#include "qapplication.h"
#include "qbitmap.h"
#include "qdatetime.h"
#include "qdebug.h"
#include "qapplication_p.h"
#include <private/qt_mac_p.h>
#include "qevent.h"
#include "qurl.h"
#include <stdlib.h>
#include <string.h>
#include "qt_cocoa_helpers_mac_p.h"

QT_BEGIN_NAMESPACE

QT_USE_NAMESPACE

/*****************************************************************************
  QClipboard debug facilities
 *****************************************************************************/
//#define DEBUG_PASTEBOARD

#ifndef QT_NO_CLIPBOARD

/*****************************************************************************
  QClipboard member functions for mac.
 *****************************************************************************/

static QMacPasteboard *qt_mac_pasteboards[2] = {0, 0};

static inline QMacPasteboard *qt_mac_pasteboard(QClipboard::Mode mode)
{
    Q_ASSERT(mode == QClipboard::Clipboard || mode == QClipboard::FindBuffer);
    if (mode == QClipboard::Clipboard)
        return qt_mac_pasteboards[0];
    else
        return qt_mac_pasteboards[1];
}

static void qt_mac_cleanupPasteboard() {
    delete qt_mac_pasteboards[0];
    delete qt_mac_pasteboards[1];
    qt_mac_pasteboards[0] = 0;
    qt_mac_pasteboards[1] = 0;
}

static bool qt_mac_updateScrap(QClipboard::Mode mode)
{
    if(!qt_mac_pasteboards[0]) {
        qt_mac_pasteboards[0] = new QMacPasteboard(kPasteboardClipboard, QMacPasteboardMime::MIME_CLIP);
        qt_mac_pasteboards[1] = new QMacPasteboard(kPasteboardFind, QMacPasteboardMime::MIME_CLIP);
        qAddPostRoutine(qt_mac_cleanupPasteboard);
        return true;
    }
    return qt_mac_pasteboard(mode)->sync();
}

void QClipboard::clear(Mode mode)
{
    if (!supportsMode(mode))
        return;
    qt_mac_updateScrap(mode);
    qt_mac_pasteboard(mode)->clear();
    setMimeData(0, mode);
}

void QClipboard::ownerDestroyed()
{
}


void QClipboard::connectNotify(const char *signal)
{
    Q_UNUSED(signal);
}

bool QClipboard::event(QEvent *e)
{
    if(e->type() != QEvent::Clipboard)
        return QObject::event(e);

    if (qt_mac_updateScrap(QClipboard::Clipboard)) {
        emitChanged(QClipboard::Clipboard);
    }

    if (qt_mac_updateScrap(QClipboard::FindBuffer)) {
        emitChanged(QClipboard::FindBuffer);
    }

    return QObject::event(e);
}

const QMimeData *QClipboard::mimeData(Mode mode) const
{
    if (!supportsMode(mode))
        return 0;
    qt_mac_updateScrap(mode);
    return qt_mac_pasteboard(mode)->mimeData();
}

void QClipboard::setMimeData(QMimeData *src, Mode mode)
{
    if (!supportsMode(mode))
        return;
    qt_mac_updateScrap(mode);
    qt_mac_pasteboard(mode)->setMimeData(src);
    emitChanged(mode);
}

bool QClipboard::supportsMode(Mode mode) const
{
    return (mode == Clipboard || mode == FindBuffer);
}

bool QClipboard::ownsMode(Mode mode) const
{
    Q_UNUSED(mode);
    return false;
}

#endif // QT_NO_CLIPBOARD

/*****************************************************************************
   QMacPasteboard code
*****************************************************************************/

QMacPasteboard::QMacPasteboard(PasteboardRef p, uchar mt)
{
    mac_mime_source = false;
    mime_type = mt ? mt : uchar(QMacPasteboardMime::MIME_ALL);
    paste = p;
    CFRetain(paste);
}

QMacPasteboard::QMacPasteboard(uchar mt)
{
    mac_mime_source = false;
    mime_type = mt ? mt : uchar(QMacPasteboardMime::MIME_ALL);
    paste = 0;
    OSStatus err = PasteboardCreate(0, &paste);
    if(err == noErr) {
        PasteboardSetPromiseKeeper(paste, promiseKeeper, this);
    } else {
        qDebug("PasteBoard: Error creating pasteboard: [%d]", (int)err);
    }
}

QMacPasteboard::QMacPasteboard(CFStringRef name, uchar mt)
{
    mac_mime_source = false;
    mime_type = mt ? mt : uchar(QMacPasteboardMime::MIME_ALL);
    paste = 0;
    OSStatus err = PasteboardCreate(name, &paste);
    if(err == noErr) {
        PasteboardSetPromiseKeeper(paste, promiseKeeper, this);
    } else {
        qDebug("PasteBoard: Error creating pasteboard: %s [%d]", QCFString::toQString(name).toLatin1().constData(), (int)err);
    }
}

QMacPasteboard::~QMacPasteboard()
{
    // commit all promises for paste after exit close
    for (int i = 0; i < promises.count(); ++i) {
        const Promise &promise = promises.at(i);
        QCFString flavor = QCFString(promise.convertor->flavorFor(promise.mime));
        promiseKeeper(paste, (PasteboardItemID)promise.itemId, flavor, this);
    }

    if(paste)
        CFRelease(paste);
}

PasteboardRef
QMacPasteboard::pasteBoard() const
{
    return paste;
}

OSStatus QMacPasteboard::promiseKeeper(PasteboardRef paste, PasteboardItemID id, CFStringRef flavor, void *_qpaste)
{
    QMacPasteboard *qpaste = (QMacPasteboard*)_qpaste;
    const long promise_id = (long)id;

    // Find the kept promise
    const QString flavorAsQString = QCFString::toQString(flavor);
    QMacPasteboard::Promise promise;
    for (int i = 0; i < qpaste->promises.size(); i++){
        QMacPasteboard::Promise tmp = qpaste->promises[i];
        if (tmp.itemId == promise_id && tmp.convertor->canConvert(tmp.mime, flavorAsQString)){
            promise = tmp;
            break;
        }
    }
    
    if (!promise.itemId && flavorAsQString == QLatin1String("com.trolltech.qt.MimeTypeName")) {
        // we have promised this data, but wont be able to convert, so return null data.
        // This helps in making the application/x-qt-mime-type-name hidden from normal use.
        QByteArray ba;
        QCFType<CFDataRef> data = CFDataCreate(0, (UInt8*)ba.constData(), ba.size());
        PasteboardPutItemFlavor(paste, id, flavor, data, kPasteboardFlavorNoFlags);
        return noErr;
    }
    
    if (!promise.itemId) {
        // There was no promise that could deliver data for the
        // given id and flavor. This should not happend.
        qDebug("Pasteboard: %d: Request for %ld, %s, but no promise found!", __LINE__, promise_id, qPrintable(flavorAsQString));
        return cantGetFlavorErr;
    }

#ifdef DEBUG_PASTEBOARD
    qDebug("PasteBoard: Calling in promise for %s[%ld] [%s] (%s) [%d]", qPrintable(promise.mime), promise_id,
           qPrintable(flavorAsQString), qPrintable(promise.convertor->convertorName()), promise.offset);
#endif

    QList<QByteArray> md = promise.convertor->convertFromMime(promise.mime, promise.data, flavorAsQString);
    if (md.size() <= promise.offset)
        return cantGetFlavorErr;
    const QByteArray &ba = md[promise.offset];
    QCFType<CFDataRef> data = CFDataCreate(0, (UInt8*)ba.constData(), ba.size());
    PasteboardPutItemFlavor(paste, id, flavor, data, kPasteboardFlavorNoFlags);
    return noErr;
}

bool
QMacPasteboard::hasOSType(int c_flavor) const
{
    if (!paste)
        return false;

    sync();

    ItemCount cnt = 0;
    if(PasteboardGetItemCount(paste, &cnt) || !cnt)
        return false;

#ifdef DEBUG_PASTEBOARD
    qDebug("PasteBoard: hasOSType [%c%c%c%c]", (c_flavor>>24)&0xFF, (c_flavor>>16)&0xFF,
           (c_flavor>>8)&0xFF, (c_flavor>>0)&0xFF);
#endif
    for(uint index = 1; index <= cnt; ++index) {

        PasteboardItemID id;
        if(PasteboardGetItemIdentifier(paste, index, &id) != noErr)
            return false;

        QCFType<CFArrayRef> types;
        if(PasteboardCopyItemFlavors(paste, id, &types ) != noErr)
            return false;

        const int type_count = CFArrayGetCount(types);
        for(int i = 0; i < type_count; ++i) {
            CFStringRef flavor = (CFStringRef)CFArrayGetValueAtIndex(types, i);
            const int os_flavor = UTGetOSTypeFromString(UTTypeCopyPreferredTagWithClass(flavor, kUTTagClassOSType));
            if(os_flavor == c_flavor) {
#ifdef DEBUG_PASTEBOARD
                qDebug("  - Found!");
#endif
                return true;
            }
        }
    }
#ifdef DEBUG_PASTEBOARD
    qDebug("  - NotFound!");
#endif
    return false;
}

bool
QMacPasteboard::hasFlavor(QString c_flavor) const
{
    if (!paste)
        return false;

    sync();

    ItemCount cnt = 0;
    if(PasteboardGetItemCount(paste, &cnt) || !cnt)
        return false;

#ifdef DEBUG_PASTEBOARD
    qDebug("PasteBoard: hasFlavor [%s]", qPrintable(c_flavor));
#endif
    for(uint index = 1; index <= cnt; ++index) {

        PasteboardItemID id;
        if(PasteboardGetItemIdentifier(paste, index, &id) != noErr)
            return false;

        PasteboardFlavorFlags flags;
        if(PasteboardGetItemFlavorFlags(paste, id, QCFString(c_flavor), &flags) == noErr) {
#ifdef DEBUG_PASTEBOARD
            qDebug("  - Found!");
#endif
            return true;
        }
    }
#ifdef DEBUG_PASTEBOARD
    qDebug("  - NotFound!");
#endif
    return false;
}

class QMacPasteboardMimeSource : public QMimeData {
    const QMacPasteboard *paste;
public:
    QMacPasteboardMimeSource(const QMacPasteboard *p) : QMimeData(), paste(p) { }
    ~QMacPasteboardMimeSource() { }
    virtual QStringList formats() const { return paste->formats(); }
    virtual QVariant retrieveData(const QString &format, QVariant::Type type) const { return paste->retrieveData(format, type); }
};

QMimeData
*QMacPasteboard::mimeData() const
{
    if(!mime) {
        mac_mime_source = true;
        mime = new QMacPasteboardMimeSource(this);

    }
    return mime;
}

class QMacMimeData : public QMimeData
{
public:
    QVariant variantData(const QString &mime) { return retrieveData(mime, QVariant::Invalid); }
private:
    QMacMimeData();
};

void
QMacPasteboard::setMimeData(QMimeData *mime_src)
{
    if (!paste)
        return;

    if (mime == mime_src || (!mime_src && mime && mac_mime_source))
        return;
    mac_mime_source = false;
    delete mime;
    mime = mime_src;

    QList<QMacPasteboardMime*> availableConverters = QMacPasteboardMime::all(mime_type);
    if (mime != 0) {
        clear_helper();
        QStringList formats = mime_src->formats();

        for(int f = 0; f < formats.size(); ++f) {
            QString mimeType = formats.at(f);
            for (QList<QMacPasteboardMime *>::Iterator it = availableConverters.begin(); it != availableConverters.end(); ++it) {
                QMacPasteboardMime *c = (*it);
                QString flavor(c->flavorFor(mimeType));
                if(!flavor.isEmpty()) {
                    QVariant mimeData = static_cast<QMacMimeData*>(mime_src)->variantData(mimeType);
#if 0
                    //### Grrr, why didn't I put in a virtual int QMacPasteboardMime::count()? --Sam
                    const int numItems = c->convertFromMime(mimeType, mimeData, flavor).size();
#else
                    int numItems = 1; //this is a hack but it is much faster than allowing conversion above
                    if(c->convertorName() == QLatin1String("FileURL"))
                        numItems = mime_src->urls().count();
#endif
                    for(int item = 0; item < numItems; ++item) {
                        const int itemID = item+1; //id starts at 1
                        promises.append(QMacPasteboard::Promise(itemID, c, mimeType, mimeData, item));
                        PasteboardPutItemFlavor(paste, (PasteboardItemID)itemID, QCFString(flavor), 0, kPasteboardFlavorNoFlags);
#ifdef DEBUG_PASTEBOARD
                        qDebug(" -  adding %d %s [%s] <%s> [%d]",
                               itemID, qPrintable(mimeType), qPrintable(flavor), qPrintable(c->convertorName()), item);
#endif
                    }
                }
            }
        }
    }
}

QStringList
QMacPasteboard::formats() const
{
    if (!paste)
        return QStringList();

    sync();

    QStringList ret;
    ItemCount cnt = 0;
    if(PasteboardGetItemCount(paste, &cnt) || !cnt)
        return ret;

#ifdef DEBUG_PASTEBOARD
    qDebug("PasteBoard: Formats [%d]", (int)cnt);
#endif
    for(uint index = 1; index <= cnt; ++index) {

        PasteboardItemID id;
        if(PasteboardGetItemIdentifier(paste, index, &id) != noErr)
            continue;

        QCFType<CFArrayRef> types;
        if(PasteboardCopyItemFlavors(paste, id, &types ) != noErr)
            continue;

        const int type_count = CFArrayGetCount(types);
        for(int i = 0; i < type_count; ++i) {
            const QString flavor = QCFString::toQString((CFStringRef)CFArrayGetValueAtIndex(types, i));
#ifdef DEBUG_PASTEBOARD
            qDebug(" -%s", qPrintable(QString(flavor)));
#endif
            QString mimeType = QMacPasteboardMime::flavorToMime(mime_type, flavor);
            if(!mimeType.isEmpty() && !ret.contains(mimeType)) {
#ifdef DEBUG_PASTEBOARD
                qDebug("   -<%d> %s [%s]", ret.size(), qPrintable(mimeType), qPrintable(QString(flavor)));
#endif
                ret << mimeType;
            }
        }
    }
    return ret;
}

bool
QMacPasteboard::hasFormat(const QString &format) const
{
    if (!paste)
        return false;

    sync();

    ItemCount cnt = 0;
    if(PasteboardGetItemCount(paste, &cnt) || !cnt)
        return false;

#ifdef DEBUG_PASTEBOARD
    qDebug("PasteBoard: hasFormat [%s]", qPrintable(format));
#endif
    for(uint index = 1; index <= cnt; ++index) {

        PasteboardItemID id;
        if(PasteboardGetItemIdentifier(paste, index, &id) != noErr)
            continue;

        QCFType<CFArrayRef> types;
        if(PasteboardCopyItemFlavors(paste, id, &types ) != noErr)
            continue;

        const int type_count = CFArrayGetCount(types);
        for(int i = 0; i < type_count; ++i) {
            const QString flavor = QCFString::toQString((CFStringRef)CFArrayGetValueAtIndex(types, i));
#ifdef DEBUG_PASTEBOARD
            qDebug(" -%s [0x%x]", qPrintable(QString(flavor)), mime_type);
#endif
            QString mimeType = QMacPasteboardMime::flavorToMime(mime_type, flavor);
#ifdef DEBUG_PASTEBOARD
            if(!mimeType.isEmpty())
                qDebug("   - %s", qPrintable(mimeType));
#endif
            if(mimeType == format)
                return true;
        }
    }
    return false;
}

QVariant
QMacPasteboard::retrieveData(const QString &format, QVariant::Type) const
{
    if (!paste)
        return QVariant();

    sync();

    ItemCount cnt = 0;
    if(PasteboardGetItemCount(paste, &cnt) || !cnt)
        return QByteArray();

#ifdef DEBUG_PASTEBOARD
    qDebug("Pasteboard: retrieveData [%s]", qPrintable(format));
#endif
    const QList<QMacPasteboardMime *> mimes = QMacPasteboardMime::all(mime_type);
    for(int mime = 0; mime < mimes.size(); ++mime) {
        QMacPasteboardMime *c = mimes.at(mime);
        QString c_flavor = c->flavorFor(format);
        if(!c_flavor.isEmpty()) {
            // Handle text/plain a little differently. Try handling Unicode first.
            bool checkForUtf16 = (c_flavor == QLatin1String("com.apple.traditional-mac-plain-text")
                                  || c_flavor == QLatin1String("public.utf8-plain-text"));
            if (checkForUtf16 || c_flavor == QLatin1String("public.utf16-plain-text")) {
                // Try to get the NSStringPboardType from NSPasteboard, newlines are mapped
                // correctly (as '\n') in this data. The 'public.utf16-plain-text' type
                // usually maps newlines to '\r' instead.
                QString str = qt_mac_get_pasteboardString();
                if (!str.isEmpty())
                    return str;
            }
            if (checkForUtf16 && hasFlavor(QLatin1String("public.utf16-plain-text")))
                c_flavor = QLatin1String("public.utf16-plain-text");

            QVariant ret;
            QList<QByteArray> retList;
            for(uint index = 1; index <= cnt; ++index) {
                PasteboardItemID id;
                if(PasteboardGetItemIdentifier(paste, index, &id) != noErr)
                    continue;

                QCFType<CFArrayRef> types;
                if(PasteboardCopyItemFlavors(paste, id, &types ) != noErr)
                    continue;

                const int type_count = CFArrayGetCount(types);
                for(int i = 0; i < type_count; ++i) {
                    CFStringRef flavor = static_cast<CFStringRef>(CFArrayGetValueAtIndex(types, i));
                    if(c_flavor == QCFString::toQString(flavor)) {
                        QCFType<CFDataRef> macBuffer;
                        if(PasteboardCopyItemFlavorData(paste, id, flavor, &macBuffer) == noErr) {
                            QByteArray buffer((const char *)CFDataGetBytePtr(macBuffer), CFDataGetLength(macBuffer));
                            if(!buffer.isEmpty()) {
#ifdef DEBUG_PASTEBOARD
                                qDebug("  - %s [%s] (%s)", qPrintable(format), qPrintable(QCFString::toQString(flavor)), qPrintable(c->convertorName()));
#endif
                                buffer.detach(); //detach since we release the macBuffer
                                retList.append(buffer);
                                break; //skip to next element
                            }
                        }
                    } else {
#ifdef DEBUG_PASTEBOARD
                        qDebug("  - NoMatch %s [%s] (%s)", qPrintable(c_flavor), qPrintable(QCFString::toQString(flavor)), qPrintable(c->convertorName()));
#endif
                    }
                }
            }

            if (!retList.isEmpty()) {
                ret = c->convertToMime(format, retList, c_flavor);
                return ret;
            }
        }
    }
    return QVariant();
}

void QMacPasteboard::clear_helper()
{
    if (paste)
        PasteboardClear(paste);
    promises.clear();
}

void
QMacPasteboard::clear()
{
#ifdef DEBUG_PASTEBOARD
    qDebug("PasteBoard: clear!");
#endif
    clear_helper();
}

bool
QMacPasteboard::sync() const
{
    if (!paste)
        return false;
    const bool fromGlobal = PasteboardSynchronize(paste) & kPasteboardModified;
    
    if (fromGlobal)
        const_cast<QMacPasteboard *>(this)->setMimeData(0);

#ifdef DEBUG_PASTEBOARD
    if(fromGlobal)
        qDebug("Pasteboard: Syncronize!");
#endif
    return fromGlobal;
}




QT_END_NAMESPACE