summaryrefslogtreecommitdiffstats
path: root/src/quick/items/qquicktext.cpp
blob: 14016777c1d22d936408e63acf09a4d610ab05df (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
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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 1.1, 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qquicktext_p.h"
#include "qquicktext_p_p.h"

#include <QtQuick/private/qsgcontext_p.h>
#include <private/qsgadaptationlayer_p.h>
#include "qquicktextnode_p.h"
#include "qquickimage_p_p.h"
#include <QtQuick/private/qsgtexture_p.h>

#include <QtDeclarative/qdeclarativeinfo.h>
#include <QtGui/qevent.h>
#include <QtGui/qabstracttextdocumentlayout.h>
#include <QtGui/qpainter.h>
#include <QtGui/qtextdocument.h>
#include <QtGui/qtextobject.h>
#include <QtGui/qtextcursor.h>
#include <QtGui/qguiapplication.h>
#include <QtGui/qinputpanel.h>

#include <private/qtextengine_p.h>
#include <private/qdeclarativestyledtext_p.h>
#include <QtQuick/private/qdeclarativepixmapcache_p.h>

#include <qmath.h>
#include <limits.h>

QT_BEGIN_NAMESPACE


const QChar QQuickTextPrivate::elideChar = QChar(0x2026);

QQuickTextPrivate::QQuickTextPrivate()
: color((QRgb)0), style(QQuickText::Normal), hAlign(QQuickText::AlignLeft),
  vAlign(QQuickText::AlignTop), elideMode(QQuickText::ElideNone),
  format(QQuickText::AutoText), wrapMode(QQuickText::NoWrap), lineHeight(1),
  lineHeightMode(QQuickText::ProportionalHeight), lineCount(1), maximumLineCount(INT_MAX),
  maximumLineCountValid(false), fontSizeMode(QQuickText::FixedSize), minimumPixelSize(12),
  minimumPointSize(12), updateOnComponentComplete(true),
  richText(false), styledText(false), singleline(false), internalWidthUpdate(false),
  requireImplicitWidth(false), truncated(false), hAlignImplicit(true), rightToLeftText(false),
  layoutTextElided(false), textHasChanged(true),
  needToUpdateLayout(false), naturalWidth(0), doc(0), elideLayout(0), textLine(0),
  updateType(UpdatePaintNode), nbActiveDownloads(0)

#if defined(Q_OS_MAC)
, layoutThread(0), paintingThread(0)
#endif
{
}

void QQuickTextPrivate::init()
{
    Q_Q(QQuickText);
    q->setAcceptedMouseButtons(Qt::LeftButton);
    q->setFlag(QQuickItem::ItemHasContents);
}

QQuickTextDocumentWithImageResources::QQuickTextDocumentWithImageResources(QQuickItem *parent)
: QTextDocument(parent), outstanding(0)
{
    setUndoRedoEnabled(false);
    documentLayout()->registerHandler(QTextFormat::ImageObject, this);
}

QQuickTextDocumentWithImageResources::~QQuickTextDocumentWithImageResources()
{
    if (!m_resources.isEmpty())
        qDeleteAll(m_resources);
}

QVariant QQuickTextDocumentWithImageResources::loadResource(int type, const QUrl &name)
{
    QDeclarativeContext *context = qmlContext(parent());
    QUrl url = m_baseUrl.resolved(name);

    if (type == QTextDocument::ImageResource) {
        QDeclarativePixmap *p = loadPixmap(context, url);
        return p->image();
    }

    return QTextDocument::loadResource(type,url); // The *resolved* URL
}

void QQuickTextDocumentWithImageResources::requestFinished()
{
    outstanding--;
    if (outstanding == 0) {
        markContentsDirty(0, characterCount());
        emit imagesLoaded();
    }
}

void QQuickTextDocumentWithImageResources::clear()
{
    clearResources();

    QTextDocument::clear();
}


QSizeF QQuickTextDocumentWithImageResources::intrinsicSize(
        QTextDocument *, int, const QTextFormat &format)
{
    if (format.isImageFormat()) {
        QTextImageFormat imageFormat = format.toImageFormat();

        const bool hasWidth = imageFormat.hasProperty(QTextFormat::ImageWidth);
        const int width = qRound(imageFormat.width());
        const bool hasHeight = imageFormat.hasProperty(QTextFormat::ImageHeight);
        const int height = qRound(imageFormat.height());

        QSizeF size(width, height);
        if (!hasWidth || !hasHeight) {
            QDeclarativeContext *context = qmlContext(parent());
            QUrl url = m_baseUrl.resolved(QUrl(imageFormat.name()));

            QDeclarativePixmap *p = loadPixmap(context, url);
            if (!p->isReady()) {
                if (!hasWidth)
                    size.setWidth(16);
                if (!hasHeight)
                    size.setHeight(16);
                return size;
            }
            QSize implicitSize = p->implicitSize();

            if (!hasWidth) {
                if (!hasHeight)
                    size.setWidth(implicitSize.width());
                else
                    size.setWidth(qRound(height * (implicitSize.width() / (qreal) implicitSize.height())));
            }
            if (!hasHeight) {
                if (!hasWidth)
                    size.setHeight(implicitSize.height());
                else
                    size.setHeight(qRound(width * (implicitSize.height() / (qreal) implicitSize.width())));
            }
        }
        return size;
    }
    return QSizeF();
}

void QQuickTextDocumentWithImageResources::drawObject(
        QPainter *, const QRectF &, QTextDocument *, int, const QTextFormat &)
{
}

QImage QQuickTextDocumentWithImageResources::image(const QTextImageFormat &format)
{
    QDeclarativeContext *context = qmlContext(parent());
    QUrl url = m_baseUrl.resolved(QUrl(format.name()));

    QDeclarativePixmap *p = loadPixmap(context, url);
    return p->image();
}

void QQuickTextDocumentWithImageResources::setBaseUrl(const QUrl &url, bool clear)
{
    m_baseUrl = url;
    if (clear) {
        clearResources();
        markContentsDirty(0, characterCount());
    }
}

QDeclarativePixmap *QQuickTextDocumentWithImageResources::loadPixmap(
        QDeclarativeContext *context, const QUrl &url)
{

    QHash<QUrl, QDeclarativePixmap *>::Iterator iter = m_resources.find(url);

    if (iter == m_resources.end()) {
        QDeclarativePixmap *p = new QDeclarativePixmap(context->engine(), url);
        iter = m_resources.insert(url, p);

        if (p->isLoading()) {
            p->connectFinished(this, SLOT(requestFinished()));
            outstanding++;
        }
    }

    QDeclarativePixmap *p = *iter;
    if (p->isError()) {
        if (!errors.contains(url)) {
            errors.insert(url);
            qmlInfo(parent()) << p->error();
        }
    }
    return p;
}

void QQuickTextDocumentWithImageResources::clearResources()
{
    foreach (QDeclarativePixmap *pixmap, m_resources)
        pixmap->clear(this);
    qDeleteAll(m_resources);
    m_resources.clear();
    outstanding = 0;
}

void QQuickTextDocumentWithImageResources::setText(const QString &text)
{
    clearResources();

#ifndef QT_NO_TEXTHTMLPARSER
    setHtml(text);
#else
    setPlainText(text);
#endif
}

QSet<QUrl> QQuickTextDocumentWithImageResources::errors;

QQuickTextPrivate::~QQuickTextPrivate()
{
    delete elideLayout;
    delete textLine; textLine = 0;
    qDeleteAll(imgTags);
    imgTags.clear();
}

qreal QQuickTextPrivate::getImplicitWidth() const
{
    if (!requireImplicitWidth) {
        // We don't calculate implicitWidth unless it is required.
        // We need to force a size update now to ensure implicitWidth is calculated
        QQuickTextPrivate *me = const_cast<QQuickTextPrivate*>(this);
        me->requireImplicitWidth = true;
        me->updateSize();
    }
    return implicitWidth;
}

void QQuickText::q_imagesLoaded()
{
    Q_D(QQuickText);
    d->updateLayout();
}

void QQuickTextPrivate::updateLayout()
{
    Q_Q(QQuickText);
    if (!q->isComponentComplete()) {
        updateOnComponentComplete = true;
        return;
    }
    updateOnComponentComplete = false;
    layoutTextElided = false;

    if (!visibleImgTags.isEmpty())
        visibleImgTags.clear();
    needToUpdateLayout = false;

    // Setup instance of QTextLayout for all cases other than richtext
    if (!richText) {
        if (textHasChanged) {
            if (styledText && !text.isEmpty()) {
                QDeclarativeStyledText::parse(text, layout, imgTags, q->baseUrl(), qmlContext(q), !maximumLineCountValid);
            } else {
                layout.clearAdditionalFormats();
                QString tmp = text;
                tmp.replace(QLatin1Char('\n'), QChar::LineSeparator);
                layout.setText(tmp);
            }
            textHasChanged = false;
        }
    } else {
        ensureDoc();
        QTextBlockFormat::LineHeightTypes type;
        type = lineHeightMode == QQuickText::FixedHeight ? QTextBlockFormat::FixedHeight : QTextBlockFormat::ProportionalHeight;
        QTextBlockFormat blockFormat;
        blockFormat.setLineHeight((lineHeightMode == QQuickText::FixedHeight ? lineHeight : lineHeight * 100), type);
        for (QTextBlock it = doc->begin(); it != doc->end(); it = it.next()) {
            QTextCursor cursor(it);
            cursor.mergeBlockFormat(blockFormat);
        }
    }

    updateSize();

    if (needToUpdateLayout) {
        needToUpdateLayout = false;
        textHasChanged = true;
        updateLayout();
    }
}

void QQuickText::imageDownloadFinished()
{
    Q_D(QQuickText);

    (d->nbActiveDownloads)--;

    // when all the remote images have been downloaded,
    // if one of the sizes was not specified at parsing time
    // we use the implicit size from pixmapcache and re-layout.

    if (d->nbActiveDownloads == 0) {
        bool needToUpdateLayout = false;
        foreach (QDeclarativeStyledTextImgTag *img, d->visibleImgTags) {
            if (!img->size.isValid()) {
                img->size = img->pix->implicitSize();
                needToUpdateLayout = true;
            }
        }

        if (needToUpdateLayout) {
            d->textHasChanged = true;
            d->updateLayout();
        } else {
            d->updateType = QQuickTextPrivate::UpdatePaintNode;
            update();
        }
    }
}

void QQuickTextPrivate::updateSize()
{
    Q_Q(QQuickText);

    if (!q->isComponentComplete()) {
        updateOnComponentComplete = true;
        return;
    }

    if (!requireImplicitWidth) {
        emit q->implicitWidthChanged();
        // if the implicitWidth is used, then updateSize() has already been called (recursively)
        if (requireImplicitWidth)
            return;
    }

    QFontMetrics fm(font);
    if (text.isEmpty()) {
        qreal fontHeight = fm.height();
        q->setImplicitSize(0, fontHeight);
        contentSize = QSize(0, fontHeight);
        emit q->contentSizeChanged();
        updateType = UpdatePaintNode;
        q->update();
        return;
    }

    int dy = q->height();
    QSize size(0, 0);

#if defined(Q_OS_MAC)
    layoutThread = QThread::currentThread();
#endif

    //setup instance of QTextLayout for all cases other than richtext
    if (!richText) {
        QRect textRect = setupTextLayout();
        layedOutTextRect = textRect;
        size = textRect.size();
        dy -= size.height();
    } else {
        singleline = false; // richtext can't elide or be optimized for single-line case
        ensureDoc();
        doc->setDefaultFont(font);
        QQuickText::HAlignment horizontalAlignment = q->effectiveHAlign();
        if (rightToLeftText) {
            if (horizontalAlignment == QQuickText::AlignLeft)
                horizontalAlignment = QQuickText::AlignRight;
            else if (horizontalAlignment == QQuickText::AlignRight)
                horizontalAlignment = QQuickText::AlignLeft;
        }
        QTextOption option;
        option.setAlignment((Qt::Alignment)int(horizontalAlignment | vAlign));
        option.setWrapMode(QTextOption::WrapMode(wrapMode));
        option.setUseDesignMetrics(true);
        doc->setDefaultTextOption(option);
        if (requireImplicitWidth && q->widthValid()) {
            doc->setTextWidth(-1);
            naturalWidth = doc->idealWidth();
        }
        if (wrapMode != QQuickText::NoWrap && q->widthValid())
            doc->setTextWidth(q->width());
        else
            doc->setTextWidth(doc->idealWidth()); // ### Text does not align if width is not set (QTextDoc bug)
        dy -= (int)doc->size().height();
        QSize dsize = doc->size().toSize();
        layedOutTextRect = QRect(QPoint(0,0), dsize);
        size = QSize(int(doc->idealWidth()),dsize.height());
    }
    int yoff = 0;

    if (q->heightValid()) {
        if (vAlign == QQuickText::AlignBottom)
            yoff = dy;
        else if (vAlign == QQuickText::AlignVCenter)
            yoff = dy/2;
    }
    q->setBaselineOffset(fm.ascent() + yoff);

    //### need to comfirm cost of always setting these for richText
    internalWidthUpdate = true;
    qreal iWidth = -1;
    if (!q->widthValid())
        iWidth = size.width();
    else if (requireImplicitWidth)
        iWidth = naturalWidth;
    if (iWidth > -1)
        q->setImplicitSize(iWidth, size.height());
    internalWidthUpdate = false;

    if (iWidth == -1)
        q->setImplicitHeight(size.height());
    if (contentSize != size) {
        contentSize = size;
        emit q->contentSizeChanged();
    }
    updateType = UpdatePaintNode;
    q->update();
}

QQuickTextLine::QQuickTextLine()
    : QObject(), m_line(0), m_height(0)
{
}

void QQuickTextLine::setLine(QTextLine *line)
{
    m_line = line;
}

void QQuickTextLine::setLineOffset(int offset)
{
    m_lineOffset = offset;
}

int QQuickTextLine::number() const
{
    if (m_line)
        return m_line->lineNumber() + m_lineOffset;
    return 0;
}

qreal QQuickTextLine::width() const
{
    if (m_line)
        return m_line->width();
    return 0;
}

void QQuickTextLine::setWidth(qreal width)
{
    if (m_line)
        m_line->setLineWidth(width);
}

qreal QQuickTextLine::height() const
{
    if (m_height)
        return m_height;
    if (m_line)
        return m_line->height();
    return 0;
}

void QQuickTextLine::setHeight(qreal height)
{
    if (m_line)
        m_line->setPosition(QPointF(m_line->x(), m_line->y() - m_line->height() + height));
    m_height = height;
}

qreal QQuickTextLine::x() const
{
    if (m_line)
        return m_line->x();
    return 0;
}

void QQuickTextLine::setX(qreal x)
{
    if (m_line)
        m_line->setPosition(QPointF(x, m_line->y()));
}

qreal QQuickTextLine::y() const
{
    if (m_line)
        return m_line->y();
    return 0;
}

void QQuickTextLine::setY(qreal y)
{
    if (m_line)
        m_line->setPosition(QPointF(m_line->x(), y));
}

void QQuickText::doLayout()
{
    Q_D(QQuickText);
    d->updateSize();
}

bool QQuickTextPrivate::isLineLaidOutConnected()
{
    static int idx = this->signalIndex("lineLaidOut(QQuickTextLine*)");
    return this->isSignalConnected(idx);
}

void QQuickTextPrivate::setupCustomLineGeometry(QTextLine &line, qreal &height, int lineOffset)
{
    Q_Q(QQuickText);

#if defined(Q_OS_MAC)
    if (QThread::currentThread() != paintingThread) {
        if (!line.lineNumber())
            linesRects.clear();
#endif

        if (!textLine)
            textLine = new QQuickTextLine;
        textLine->setLine(&line);
        textLine->setY(height);
        textLine->setHeight(0);
        textLine->setLineOffset(lineOffset);

        // use the text item's width by default if it has one and wrap is on
        if (q->widthValid() && q->wrapMode() != QQuickText::NoWrap)
            textLine->setWidth(q->width());
        else
            textLine->setWidth(INT_MAX);
        if (lineHeight != 1.0)
            textLine->setHeight((lineHeightMode == QQuickText::FixedHeight) ? lineHeight : line.height() * lineHeight);

        emit q->lineLaidOut(textLine);

        height += textLine->height();

#if defined(Q_OS_MAC)
        linesRects << QRectF(textLine->x(), textLine->y(), textLine->width(), textLine->height());

    } else {
        if (line.lineNumber() < linesRects.count()) {
            QRectF r = linesRects.at(line.lineNumber());
            line.setLineWidth(r.width());
            line.setPosition(r.topLeft());
        }
    }
#endif
}

/*!
    Lays out the QQuickTextPrivate::layout QTextLayout in the constraints of the QQuickText.

    Returns the size of the final text.  This can be used to position the text vertically (the text is
    already absolutely positioned horizontally).
*/

QRect QQuickTextPrivate::setupTextLayout()
{
    Q_Q(QQuickText);
    layout.setCacheEnabled(true);

    QTextOption textOption = layout.textOption();
    textOption.setAlignment(Qt::Alignment(q->effectiveHAlign()));
    textOption.setWrapMode(QTextOption::WrapMode(wrapMode));
    textOption.setUseDesignMetrics(true);
    layout.setTextOption(textOption);
    layout.setFont(font);

    if ((q->widthValid() && q->width() <= 0. && elideMode != QQuickText::ElideNone)
            || (q->heightValid() && q->height() <= 0. && wrapMode != QQuickText::NoWrap && elideMode == QQuickText::ElideRight)) {
        // we are elided and we have a zero width or height
        if (!truncated) {
            truncated = true;
            emit q->truncatedChanged();
        }
        if (lineCount) {
            lineCount = 0;
            emit q->lineCountChanged();
        }

        if (requireImplicitWidth) {
            // Layout to determine the implicit width.
            layout.beginLayout();

            for (int i = 0; i < maximumLineCount; ++i) {
                QTextLine line = layout.createLine();
                if (!line.isValid())
                    break;
            }
            layout.endLayout();
            naturalWidth = layout.maximumWidth();
            layout.clearLayout();
        }

        QFontMetrics fm(font);
        qreal height = (lineHeightMode == QQuickText::FixedHeight) ? lineHeight : fm.height() * lineHeight;
        return QRect(0, 0, 0, height);
    }

    const int lineWidth = q->widthValid() ? q->width() : INT_MAX;
    const bool customLayout = isLineLaidOutConnected();
    const bool wasTruncated = truncated;

    const bool singlelineElide = !styledText && elideMode != QQuickText::ElideNone && q->widthValid();
    const bool multilineElide = !styledText
            && elideMode == QQuickText::ElideRight
            && q->widthValid()
            && (q->heightValid() || maximumLineCountValid);
    const bool canWrap = wrapMode != QQuickText::NoWrap && q->widthValid();

    const bool horizontalFit = fontSizeMode & QQuickText::HorizontalFit && q->widthValid();
    const bool verticalFit = fontSizeMode & QQuickText::VerticalFit
            && (q->heightValid() || (maximumLineCountValid && canWrap));
    const bool pixelSize = font.pixelSize() != -1;
    const QString layoutText = layout.text();

    int largeFont = pixelSize ? font.pixelSize() : font.pointSize();
    int smallFont = fontSizeMode != QQuickText::FixedSize
            ? qMin(pixelSize ? minimumPixelSize : minimumPointSize, largeFont)
            : largeFont;
    int scaledFontSize = largeFont;

    QRectF br;

    QFont scaledFont = font;

    QTextLine line;
    int visibleCount = 0;
    bool elide;
    qreal height = 0;
    QString elideText;
    bool once = true;

    naturalWidth = 0;

    do {
        if (!once) {
            if (pixelSize)
                scaledFont.setPixelSize(scaledFontSize);
            else
                scaledFont.setPointSize(scaledFontSize);
            layout.setFont(scaledFont);
        }
        layout.beginLayout();

        bool wrapped = false;
        bool truncateHeight = false;
        truncated = false;
        elide = false;
        int characterCount = 0;
        int unwrappedLineCount = 1;
        height = 0;
        br = QRectF();
        line = layout.createLine();
        for (visibleCount = 1; ; ++visibleCount) {
            qreal preLayoutHeight = height;

            if (customLayout) {
                setupCustomLineGeometry(line, height);
            } else {
                setLineGeometry(line, lineWidth, height);
            }

            if (multilineElide && height > q->height() && visibleCount > 1) {
                truncated = true;
                truncateHeight = true;
                height = preLayoutHeight;

                elide = true;
                characterCount = line.textStart() + line.textLength();

                QTextLine previousLine = layout.lineAt(visibleCount - 2);
                elideText = layoutText.mid(previousLine.textStart(), previousLine.textLength());
                if (layoutText.at(line.textStart() - 1) != QChar::LineSeparator) {
                    line.setLineWidth(INT_MAX);
                    elideText += layoutText.mid(line.textStart(), line.textLength());
                } else {
                    elideText[elideText.length() - 1] = elideChar;
                }
                line.setLineWidth(0);
                line.setPosition(QPointF(FLT_MAX, FLT_MAX));
                line = previousLine;
                --visibleCount;
                height -= (lineHeightMode == QQuickText::FixedHeight) ? lineHeight : previousLine.height() * lineHeight;
                break;
            }

            QTextLine nextLine = layout.createLine();
            if (!nextLine.isValid()) {
                characterCount = line.textStart() + line.textLength();
                if (singlelineElide && visibleCount == 1 && line.naturalTextWidth() > lineWidth) {
                    truncated = true;
                    height = preLayoutHeight;
                    elide = true;
                    elideText = layoutText.mid(line.textStart(), line.textLength());
                } else {
                    br = br.united(line.naturalTextRect());
                }
                break;
            } else {
                const bool wrappedLine = layoutText.at(nextLine.textStart() - 1) != QChar::LineSeparator;
                wrapped |= wrappedLine;

                if (!wrappedLine)
                    ++unwrappedLineCount;

                if (visibleCount == maximumLineCount) {
                    truncated = true;
                    characterCount = nextLine.textStart() + nextLine.textLength();

                    if (multilineElide) {
                        height = preLayoutHeight;
                        elide = true;
                        elideText = layoutText.mid(line.textStart(), line.textLength());
                        if (wrappedLine) {
                            nextLine.setLineWidth(INT_MAX);
                            elideText += layoutText.mid(nextLine.textStart(), nextLine.textLength());
                        } else {
                            elideText[elideText.length() - 1] = elideChar;
                        }
                        elideText += elideChar;
                    } else {
                        br = br.united(line.naturalTextRect());
                    }
                    nextLine.setLineWidth(0);
                    nextLine.setPosition(QPointF(FLT_MAX, FLT_MAX));
                    break;
                }
            }
            br = br.united(line.naturalTextRect());
            line = nextLine;
        }

        layout.endLayout();

        if (once) {
            naturalWidth = layout.maximumWidth();
            once = false;

            if (requireImplicitWidth
                    && characterCount < layoutText.length()
                    && unwrappedLineCount < maximumLineCount) {
                // Use a new layout to get the maximum width for the remaining text.  Using a
                // different layout excludes the truncated text from rendering.
                QTextLayout widthLayout(layoutText.mid(characterCount), scaledFont);
                widthLayout.setTextOption(layout.textOption());

                for (; unwrappedLineCount <= maximumLineCount; ++unwrappedLineCount) {
                    QTextLine line = widthLayout.createLine();
                    if (!line.isValid())
                        break;
                }
                naturalWidth = qMax(naturalWidth, widthLayout.maximumWidth());
            }
        }

        QRectF unelidedRect = br.united(line.naturalTextRect());

        if (horizontalFit) {
            if (unelidedRect.width() > lineWidth || (!verticalFit && wrapped)) {
                largeFont = scaledFontSize - 1;
                scaledFontSize = (smallFont + largeFont) / 2;
                if (smallFont > largeFont)
                    break;
                continue;
            } else if (!verticalFit) {
                smallFont = scaledFontSize;
                scaledFontSize = (smallFont + largeFont + 1) / 2;
                if (smallFont == largeFont)
                    break;
            }
        }

        if (verticalFit) {
            if (truncateHeight || (q->heightValid() && unelidedRect.height() > q->height())) {
                largeFont = scaledFontSize - 1;
                scaledFontSize = (smallFont + largeFont + 1) / 2;
                if (smallFont > largeFont)
                    break;
            } else {
                smallFont = scaledFontSize;
                scaledFontSize = (smallFont + largeFont + 1) / 2;
                if (smallFont == largeFont)
                    break;
            }
        }
    } while (horizontalFit || verticalFit);

    if (elide) {
        if (!elideLayout)
            elideLayout = new QTextLayout;
        elideLayout->setFont(layout.font());
        elideLayout->setTextOption(layout.textOption());
        elideLayout->setText(elideText);
        elideLayout->setText(elideLayout->engine()->elidedText(Qt::TextElideMode(elideMode), lineWidth));
        elideLayout->beginLayout();

        QTextLine elidedLine = elideLayout->createLine();
        elidedLine.setPosition(QPointF(0, height));
        if (customLayout) {
            setupCustomLineGeometry(elidedLine, height, line.lineNumber());
        } else {
            setLineGeometry(elidedLine, lineWidth, height);
        }
        elideLayout->endLayout();

        br = br.united(elidedLine.naturalTextRect());

        if (visibleCount > 1)
            line.setPosition(QPointF(FLT_MAX, FLT_MAX));
        else
            layout.clearLayout();
    } else {
        delete elideLayout;
        elideLayout = 0;
    }

    if (!customLayout)
        br.setHeight(height);

    //Update the number of visible lines
    if (lineCount != visibleCount) {
        lineCount = visibleCount;
        emit q->lineCountChanged();
    }

    if (truncated != wasTruncated)
        emit q->truncatedChanged();

    return QRect(qRound(br.x()), qRound(br.y()), qCeil(br.width()), qCeil(br.height()));
}

void QQuickTextPrivate::setLineGeometry(QTextLine &line, qreal lineWidth, qreal &height)
{
    Q_Q(QQuickText);
    line.setLineWidth(lineWidth);

    if (imgTags.isEmpty()) {
        line.setPosition(QPointF(line.position().x(), height));
        height += (lineHeightMode == QQuickText::FixedHeight) ? lineHeight : line.height() * lineHeight;
        return;
    }

    qreal textTop = 0;
    qreal textHeight = line.height();
    qreal totalLineHeight = textHeight;

    QList<QDeclarativeStyledTextImgTag *> imagesInLine;

    foreach (QDeclarativeStyledTextImgTag *image, imgTags) {
        if (image->position >= line.textStart() &&
            image->position < line.textStart() + line.textLength()) {

            if (!image->pix) {
                QUrl url = q->baseUrl().resolved(image->url);
                image->pix = new QDeclarativePixmap(qmlEngine(q), url, image->size);
                if (image->pix->isLoading()) {
                    image->pix->connectFinished(q, SLOT(imageDownloadFinished()));
                    nbActiveDownloads++;
                } else if (image->pix->isReady()) {
                    if (!image->size.isValid()) {
                        image->size = image->pix->implicitSize();
                        // if the size of the image was not explicitly set, we need to
                        // call updateLayout() once again.
                        needToUpdateLayout = true;
                    }
                } else if (image->pix->isError()) {
                    qmlInfo(q) << image->pix->error();
                }
            }

            qreal ih = qreal(image->size.height());
            if (image->align == QDeclarativeStyledTextImgTag::Top)
                image->pos.setY(0);
            else if (image->align == QDeclarativeStyledTextImgTag::Middle)
                image->pos.setY((textHeight / 2.0) - (ih / 2.0));
            else
                image->pos.setY(textHeight - ih);
            imagesInLine << image;
            textTop = qMax(textTop, qAbs(image->pos.y()));
        }
    }

    foreach (QDeclarativeStyledTextImgTag *image, imagesInLine) {
        totalLineHeight = qMax(totalLineHeight, textTop + image->pos.y() + image->size.height());
        image->pos.setX(line.cursorToX(image->position));
        image->pos.setY(image->pos.y() + height + textTop);
        visibleImgTags << image;
    }

    line.setPosition(QPointF(line.position().x(), height + textTop));
    height += (lineHeightMode == QQuickText::FixedHeight) ? lineHeight : totalLineHeight * lineHeight;
}

/*!
    Ensures the QQuickTextPrivate::doc variable is set to a valid text document
*/
void QQuickTextPrivate::ensureDoc()
{
    if (!doc) {
        Q_Q(QQuickText);
        doc = new QQuickTextDocumentWithImageResources(q);
        doc->setDocumentMargin(0);
        doc->setBaseUrl(q->baseUrl());
        FAST_CONNECT(doc, SIGNAL(imagesLoaded()), q, SLOT(q_imagesLoaded()));
    }
}

/*!
    \qmlclass Text QQuickText
    \inqmlmodule QtQuick 2
    \ingroup qml-basic-visual-elements
    \brief The Text item allows you to add formatted text to a scene.
    \inherits Item

    Text items can display both plain and rich text. For example, red text with
    a specific font and size can be defined like this:

    \qml
    Text {
        text: "Hello World!"
        font.family: "Helvetica"
        font.pointSize: 24
        color: "red"
    }
    \endqml

    Rich text is defined using HTML-style markup:

    \qml
    Text {
        text: "<b>Hello</b> <i>World!</i>"
    }
    \endqml

    \image declarative-text.png

    If height and width are not explicitly set, Text will attempt to determine how
    much room is needed and set it accordingly. Unless \l wrapMode is set, it will always
    prefer width to height (all text will be placed on a single line).

    The \l elide property can alternatively be used to fit a single line of
    plain text to a set width.

    Note that the \l{Supported HTML Subset} is limited. Also, if the text contains
    HTML img tags that load remote images, the text is reloaded.

    Text provides read-only text. For editable text, see \l TextEdit.

    \sa {declarative/text/fonts}{Fonts example}
*/
QQuickText::QQuickText(QQuickItem *parent)
: QQuickImplicitSizeItem(*(new QQuickTextPrivate), parent)
{
    Q_D(QQuickText);
    d->init();
}

QQuickText::~QQuickText()
{
}

/*!
  \qmlproperty bool QtQuick2::Text::clip
  This property holds whether the text is clipped.

  Note that if the text does not fit in the bounding rectangle it will be abruptly chopped.

  If you want to display potentially long text in a limited space, you probably want to use \c elide instead.
*/

/*!
    \qmlproperty bool QtQuick2::Text::smooth

    This property holds whether the text is smoothly scaled or transformed.

    Smooth filtering gives better visual quality, but is slower.  If
    the item is displayed at its natural size, this property has no visual or
    performance effect.

    \note Generally scaling artifacts are only visible if the item is stationary on
    the screen.  A common pattern when animating an item is to disable smooth
    filtering at the beginning of the animation and reenable it at the conclusion.
*/

/*!
    \qmlsignal QtQuick2::Text::onLineLaidOut(line)

    This handler is called for every line during the layout process.
    This gives the opportunity to position and resize a line as it is being laid out.
    It can for example be used to create columns or lay out text around objects.

    The properties of a line are:
    \list
    \o number (read-only)
    \o x
    \o y
    \o width
    \o height
    \endlist

    For example, this will move the first 5 lines of a text element by 100 pixels to the right:
    \code
    onLineLaidOut: {
        if (line.number < 5) {
            line.x = line.x + 100
            line.width = line.width - 100
        }
    }
    \endcode
*/

/*!
    \qmlsignal QtQuick2::Text::onLinkActivated(string link)

    This handler is called when the user clicks on a link embedded in the text.
    The link must be in rich text or HTML format and the
    \a link string provides access to the particular link.

    \snippet doc/src/snippets/declarative/text/onLinkActivated.qml 0

    The example code will display the text
    "The main website is at \l{http://qt.nokia.com}{Nokia Qt DF}."

    Clicking on the highlighted link will output
    \tt{http://qt.nokia.com link activated} to the console.
*/

/*!
    \qmlproperty string QtQuick2::Text::font.family

    Sets the family name of the font.

    The family name is case insensitive and may optionally include a foundry name, e.g. "Helvetica [Cronyx]".
    If the family is available from more than one foundry and the foundry isn't specified, an arbitrary foundry is chosen.
    If the family isn't available a family will be set using the font matching algorithm.
*/

/*!
    \qmlproperty bool QtQuick2::Text::font.bold

    Sets whether the font weight is bold.
*/

/*!
    \qmlproperty enumeration QtQuick2::Text::font.weight

    Sets the font's weight.

    The weight can be one of:
    \list
    \o Font.Light
    \o Font.Normal - the default
    \o Font.DemiBold
    \o Font.Bold
    \o Font.Black
    \endlist

    \qml
    Text { text: "Hello"; font.weight: Font.DemiBold }
    \endqml
*/

/*!
    \qmlproperty bool QtQuick2::Text::font.italic

    Sets whether the font has an italic style.
*/

/*!
    \qmlproperty bool QtQuick2::Text::font.underline

    Sets whether the text is underlined.
*/

/*!
    \qmlproperty bool QtQuick2::Text::font.strikeout

    Sets whether the font has a strikeout style.
*/

/*!
    \qmlproperty real QtQuick2::Text::font.pointSize

    Sets the font size in points. The point size must be greater than zero.
*/

/*!
    \qmlproperty int QtQuick2::Text::font.pixelSize

    Sets the font size in pixels.

    Using this function makes the font device dependent.
    Use \c pointSize to set the size of the font in a device independent manner.
*/

/*!
    \qmlproperty real QtQuick2::Text::font.letterSpacing

    Sets the letter spacing for the font.

    Letter spacing changes the default spacing between individual letters in the font.
    A positive value increases the letter spacing by the corresponding pixels; a negative value decreases the spacing.
*/

/*!
    \qmlproperty real QtQuick2::Text::font.wordSpacing

    Sets the word spacing for the font.

    Word spacing changes the default spacing between individual words.
    A positive value increases the word spacing by a corresponding amount of pixels,
    while a negative value decreases the inter-word spacing accordingly.
*/

/*!
    \qmlproperty enumeration QtQuick2::Text::font.capitalization

    Sets the capitalization for the text.

    \list
    \o Font.MixedCase - This is the normal text rendering option where no capitalization change is applied.
    \o Font.AllUppercase - This alters the text to be rendered in all uppercase type.
    \o Font.AllLowercase - This alters the text to be rendered in all lowercase type.
    \o Font.SmallCaps - This alters the text to be rendered in small-caps type.
    \o Font.Capitalize - This alters the text to be rendered with the first character of each word as an uppercase character.
    \endlist

    \qml
    Text { text: "Hello"; font.capitalization: Font.AllLowercase }
    \endqml
*/
QFont QQuickText::font() const
{
    Q_D(const QQuickText);
    return d->sourceFont;
}

void QQuickText::setFont(const QFont &font)
{
    Q_D(QQuickText);
    if (d->sourceFont == font)
        return;

    d->sourceFont = font;
    QFont oldFont = d->font;
    d->font = font;

    if (d->font.pointSizeF() != -1) {
        // 0.5pt resolution
        qreal size = qRound(d->font.pointSizeF()*2.0);
        d->font.setPointSizeF(size/2.0);
    }

    if (oldFont != d->font)
        d->updateLayout();

    emit fontChanged(d->sourceFont);
}

/*!
    \qmlproperty string QtQuick2::Text::text

    The text to display. Text supports both plain and rich text strings.

    The item will try to automatically determine whether the text should
    be treated as styled text. This determination is made using Qt::mightBeRichText().
*/
QString QQuickText::text() const
{
    Q_D(const QQuickText);
    return d->text;
}

void QQuickText::setText(const QString &n)
{
    Q_D(QQuickText);
    if (d->text == n)
        return;

    d->richText = d->format == RichText;
    d->styledText = d->format == StyledText || (d->format == AutoText && Qt::mightBeRichText(n));
    d->text = n;
    if (isComponentComplete()) {
        if (d->richText) {
            d->ensureDoc();
            d->doc->setText(n);
            d->rightToLeftText = d->doc->toPlainText().isRightToLeft();
        } else {
            d->rightToLeftText = d->text.isRightToLeft();
        }
        d->determineHorizontalAlignment();
    }
    d->textHasChanged = true;
    qDeleteAll(d->imgTags);
    d->imgTags.clear();
    d->updateLayout();
    emit textChanged(d->text);
}

/*!
    \qmlproperty color QtQuick2::Text::color

    The text color.

    An example of green text defined using hexadecimal notation:
    \qml
    Text {
        color: "#00FF00"
        text: "green text"
    }
    \endqml

    An example of steel blue text defined using an SVG color name:
    \qml
    Text {
        color: "steelblue"
        text: "blue text"
    }
    \endqml
*/
QColor QQuickText::color() const
{
    Q_D(const QQuickText);
    return d->color;
}

void QQuickText::setColor(const QColor &color)
{
    Q_D(QQuickText);
    if (d->color == color)
        return;

    d->color = color;
    if (isComponentComplete())  {
        d->updateType = QQuickTextPrivate::UpdatePaintNode;
        update();
    }
    emit colorChanged(d->color);
}
/*!
    \qmlproperty enumeration QtQuick2::Text::style

    Set an additional text style.

    Supported text styles are:
    \list
    \o Text.Normal - the default
    \o Text.Outline
    \o Text.Raised
    \o Text.Sunken
    \endlist

    \qml
    Row {
        Text { font.pointSize: 24; text: "Normal" }
        Text { font.pointSize: 24; text: "Raised"; style: Text.Raised; styleColor: "#AAAAAA" }
        Text { font.pointSize: 24; text: "Outline";style: Text.Outline; styleColor: "red" }
        Text { font.pointSize: 24; text: "Sunken"; style: Text.Sunken; styleColor: "#AAAAAA" }
    }
    \endqml

    \image declarative-textstyle.png
*/
QQuickText::TextStyle QQuickText::style() const
{
    Q_D(const QQuickText);
    return d->style;
}

void QQuickText::setStyle(QQuickText::TextStyle style)
{
    Q_D(QQuickText);
    if (d->style == style)
        return;

    d->style = style;
    if (isComponentComplete()) {
        d->updateType = QQuickTextPrivate::UpdatePaintNode;
        update();
    }
    emit styleChanged(d->style);
}

/*!
    \qmlproperty color QtQuick2::Text::styleColor

    Defines the secondary color used by text styles.

    \c styleColor is used as the outline color for outlined text, and as the
    shadow color for raised or sunken text. If no style has been set, it is not
    used at all.

    \qml
    Text { font.pointSize: 18; text: "hello"; style: Text.Raised; styleColor: "gray" }
    \endqml

    \sa style
 */
QColor QQuickText::styleColor() const
{
    Q_D(const QQuickText);
    return d->styleColor;
}

void QQuickText::setStyleColor(const QColor &color)
{
    Q_D(QQuickText);
    if (d->styleColor == color)
        return;

    d->styleColor = color;
    if (isComponentComplete()) {
        d->updateType = QQuickTextPrivate::UpdatePaintNode;
        update();
    }
    emit styleColorChanged(d->styleColor);
}

/*!
    \qmlproperty enumeration QtQuick2::Text::horizontalAlignment
    \qmlproperty enumeration QtQuick2::Text::verticalAlignment
    \qmlproperty enumeration QtQuick2::Text::effectiveHorizontalAlignment

    Sets the horizontal and vertical alignment of the text within the Text items
    width and height. By default, the text is vertically aligned to the top. Horizontal
    alignment follows the natural alignment of the text, for example text that is read
    from left to right will be aligned to the left.

    The valid values for \c horizontalAlignment are \c Text.AlignLeft, \c Text.AlignRight, \c Text.AlignHCenter and
    \c Text.AlignJustify.  The valid values for \c verticalAlignment are \c Text.AlignTop, \c Text.AlignBottom
    and \c Text.AlignVCenter.

    Note that for a single line of text, the size of the text is the area of the text. In this common case,
    all alignments are equivalent. If you want the text to be, say, centered in its parent, then you will
    need to either modify the Item::anchors, or set horizontalAlignment to Text.AlignHCenter and bind the width to
    that of the parent.

    When using the attached property LayoutMirroring::enabled to mirror application
    layouts, the horizontal alignment of text will also be mirrored. However, the property
    \c horizontalAlignment will remain unchanged. To query the effective horizontal alignment
    of Text, use the read-only property \c effectiveHorizontalAlignment.
*/
QQuickText::HAlignment QQuickText::hAlign() const
{
    Q_D(const QQuickText);
    return d->hAlign;
}

void QQuickText::setHAlign(HAlignment align)
{
    Q_D(QQuickText);
    bool forceAlign = d->hAlignImplicit && d->effectiveLayoutMirror;
    d->hAlignImplicit = false;
    if (d->setHAlign(align, forceAlign) && isComponentComplete())
        d->updateLayout();
}

void QQuickText::resetHAlign()
{
    Q_D(QQuickText);
    d->hAlignImplicit = true;
    if (isComponentComplete() && d->determineHorizontalAlignment())
        d->updateLayout();
}

QQuickText::HAlignment QQuickText::effectiveHAlign() const
{
    Q_D(const QQuickText);
    QQuickText::HAlignment effectiveAlignment = d->hAlign;
    if (!d->hAlignImplicit && d->effectiveLayoutMirror) {
        switch (d->hAlign) {
        case QQuickText::AlignLeft:
            effectiveAlignment = QQuickText::AlignRight;
            break;
        case QQuickText::AlignRight:
            effectiveAlignment = QQuickText::AlignLeft;
            break;
        default:
            break;
        }
    }
    return effectiveAlignment;
}

bool QQuickTextPrivate::setHAlign(QQuickText::HAlignment alignment, bool forceAlign)
{
    Q_Q(QQuickText);
    if (hAlign != alignment || forceAlign) {
        QQuickText::HAlignment oldEffectiveHAlign = q->effectiveHAlign();
        hAlign = alignment;

        emit q->horizontalAlignmentChanged(hAlign);
        if (oldEffectiveHAlign != q->effectiveHAlign())
            emit q->effectiveHorizontalAlignmentChanged();
        return true;
    }
    return false;
}

bool QQuickTextPrivate::determineHorizontalAlignment()
{
    if (hAlignImplicit) {
        bool alignToRight = text.isEmpty() ? qApp->inputPanel()->inputDirection() == Qt::RightToLeft : rightToLeftText;
        return setHAlign(alignToRight ? QQuickText::AlignRight : QQuickText::AlignLeft);
    }
    return false;
}

void QQuickTextPrivate::mirrorChange()
{
    Q_Q(QQuickText);
    if (q->isComponentComplete()) {
        if (!hAlignImplicit && (hAlign == QQuickText::AlignRight || hAlign == QQuickText::AlignLeft)) {
            updateLayout();
            emit q->effectiveHorizontalAlignmentChanged();
        }
    }
}

QTextDocument *QQuickTextPrivate::textDocument()
{
    return doc;
}

QQuickText::VAlignment QQuickText::vAlign() const
{
    Q_D(const QQuickText);
    return d->vAlign;
}

void QQuickText::setVAlign(VAlignment align)
{
    Q_D(QQuickText);
    if (d->vAlign == align)
        return;

    d->vAlign = align;
    emit verticalAlignmentChanged(align);
}

/*!
    \qmlproperty enumeration QtQuick2::Text::wrapMode

    Set this property to wrap the text to the Text item's width.  The text will only
    wrap if an explicit width has been set.  wrapMode can be one of:

    \list
    \o Text.NoWrap (default) - no wrapping will be performed. If the text contains insufficient newlines, then \l contentWidth will exceed a set width.
    \o Text.WordWrap - wrapping is done on word boundaries only. If a word is too long, \l contentWidth will exceed a set width.
    \o Text.WrapAnywhere - wrapping is done at any point on a line, even if it occurs in the middle of a word.
    \o Text.Wrap - if possible, wrapping occurs at a word boundary; otherwise it will occur at the appropriate point on the line, even in the middle of a word.
    \endlist
*/
QQuickText::WrapMode QQuickText::wrapMode() const
{
    Q_D(const QQuickText);
    return d->wrapMode;
}

void QQuickText::setWrapMode(WrapMode mode)
{
    Q_D(QQuickText);
    if (mode == d->wrapMode)
        return;

    d->wrapMode = mode;
    d->updateLayout();

    emit wrapModeChanged();
}

/*!
    \qmlproperty int QtQuick2::Text::lineCount

    Returns the number of lines visible in the text item.

    This property is not supported for rich text.

    \sa maximumLineCount
*/
int QQuickText::lineCount() const
{
    Q_D(const QQuickText);
    return d->lineCount;
}

/*!
    \qmlproperty bool QtQuick2::Text::truncated

    Returns true if the text has been truncated due to \l maximumLineCount
    or \l elide.

    This property is not supported for rich text.

    \sa maximumLineCount, elide
*/
bool QQuickText::truncated() const
{
    Q_D(const QQuickText);
    return d->truncated;
}

/*!
    \qmlproperty int QtQuick2::Text::maximumLineCount

    Set this property to limit the number of lines that the text item will show.
    If elide is set to Text.ElideRight, the text will be elided appropriately.
    By default, this is the value of the largest possible integer.

    This property is not supported for rich text.

    \sa lineCount, elide
*/
int QQuickText::maximumLineCount() const
{
    Q_D(const QQuickText);
    return d->maximumLineCount;
}

void QQuickText::setMaximumLineCount(int lines)
{
    Q_D(QQuickText);

    d->maximumLineCountValid = lines==INT_MAX ? false : true;
    if (d->maximumLineCount != lines) {
        d->maximumLineCount = lines;
        d->updateLayout();
        emit maximumLineCountChanged();
    }
}

void QQuickText::resetMaximumLineCount()
{
    Q_D(QQuickText);
    setMaximumLineCount(INT_MAX);
    d->elidePos = QPointF();
    if (d->truncated != false) {
        d->truncated = false;
        emit truncatedChanged();
    }
}

/*!
    \qmlproperty enumeration QtQuick2::Text::textFormat

    The way the text property should be displayed.

    Supported text formats are:

    \list
    \o Text.AutoText (default)
    \o Text.PlainText
    \o Text.StyledText
    \o Text.RichText
    \endlist

    If the text format is \c Text.AutoText the text element
    will automatically determine whether the text should be treated as
    styled text.  This determination is made using Qt::mightBeRichText()
    which uses a fast and therefore simple heuristic. It mainly checks
    whether there is something that looks like a tag before the first
    line break. Although the result may be correct for common cases,
    there is no guarantee.

    Text.StyledText is an optimized format supporting some basic text
    styling markup, in the style of html 3.2:

    \code
    <b></b> - bold
    <strong></strong> - bold
    <i></i> - italic
    <br> - new line
    <p> - paragraph
    <u> - underlined text
    <font color="color_name" size="1-7"></font>
    <h1> to <h6> - headers
    <a href=""> - anchor
    <img src="" align="top,middle,bottom" width="" height=""> - inline images
    <ol type="">, <ul type=""> and <li> - ordered and unordered lists
    <pre></pre> - preformatted
    &gt; &lt; &amp;
    \endcode

    \c Text.StyledText parser is strict, requiring tags to be correctly nested.

    \table
    \row
    \o
    \qml
Column {
    Text {
        font.pointSize: 24
        text: "<b>Hello</b> <i>World!</i>"
    }
    Text {
        font.pointSize: 24
        textFormat: Text.RichText
        text: "<b>Hello</b> <i>World!</i>"
    }
    Text {
        font.pointSize: 24
        textFormat: Text.PlainText
        text: "<b>Hello</b> <i>World!</i>"
    }
}
    \endqml
    \o \image declarative-textformat.png
    \endtable
*/
QQuickText::TextFormat QQuickText::textFormat() const
{
    Q_D(const QQuickText);
    return d->format;
}

void QQuickText::setTextFormat(TextFormat format)
{
    Q_D(QQuickText);
    if (format == d->format)
        return;
    d->format = format;
    bool wasRich = d->richText;
    d->richText = format == RichText;
    d->styledText = format == StyledText || (format == AutoText && Qt::mightBeRichText(d->text));

    if (isComponentComplete()) {
        if (!wasRich && d->richText) {
            d->ensureDoc();
            d->doc->setText(d->text);
            d->rightToLeftText = d->doc->toPlainText().isRightToLeft();
        } else {
            d->rightToLeftText = d->text.isRightToLeft();
        }
        d->determineHorizontalAlignment();
    }
    d->updateLayout();

    emit textFormatChanged(d->format);
}

/*!
    \qmlproperty enumeration QtQuick2::Text::elide

    Set this property to elide parts of the text fit to the Text item's width.
    The text will only elide if an explicit width has been set.

    This property cannot be used with rich text.

    Eliding can be:
    \list
    \o Text.ElideNone  - the default
    \o Text.ElideLeft
    \o Text.ElideMiddle
    \o Text.ElideRight
    \endlist

    If this property is set to Text.ElideRight, it can be used with \l {wrapMode}{wrapped}
    text. The text will only elide if \c maximumLineCount, or \c height has been set.
    If both \c maximumLineCount and \c height are set, \c maximumLineCount will
    apply unless the lines do not fit in the height allowed.

    If the text is a multi-length string, and the mode is not \c Text.ElideNone,
    the first string that fits will be used, otherwise the last will be elided.

    Multi-length strings are ordered from longest to shortest, separated by the
    Unicode "String Terminator" character \c U009C (write this in QML with \c{"\u009C"} or \c{"\x9C"}).
*/
QQuickText::TextElideMode QQuickText::elideMode() const
{
    Q_D(const QQuickText);
    return d->elideMode;
}

void QQuickText::setElideMode(QQuickText::TextElideMode mode)
{
    Q_D(QQuickText);
    if (mode == d->elideMode)
        return;

    d->elideMode = mode;
    d->updateLayout();

    emit elideModeChanged(d->elideMode);
}

/*!
    \qmlproperty url QtQuick2::Text::baseUrl

    This property specifies a base URL which is used to resolve relative URLs
    within the text.

    By default is the url of the Text element.
*/

QUrl QQuickText::baseUrl() const
{
    Q_D(const QQuickText);
    if (d->baseUrl.isEmpty()) {
        if (QDeclarativeContext *context = qmlContext(this))
            const_cast<QQuickTextPrivate *>(d)->baseUrl = context->baseUrl();
    }
    return d->baseUrl;
}

void QQuickText::setBaseUrl(const QUrl &url)
{
    Q_D(QQuickText);
    if (baseUrl() != url) {
        d->baseUrl = url;

        if (d->doc)
            d->doc->setBaseUrl(url);
        if (d->styledText) {
            d->textHasChanged = true;
            qDeleteAll(d->imgTags);
            d->imgTags.clear();
            d->updateLayout();
        }
        emit baseUrlChanged();
    }
}

void QQuickText::resetBaseUrl()
{
    if (QDeclarativeContext *context = qmlContext(this))
        setBaseUrl(context->baseUrl());
    else
        setBaseUrl(QUrl());
}

/*! \internal */
QRectF QQuickText::boundingRect() const
{
    Q_D(const QQuickText);

    QRect rect = d->layedOutTextRect;
    if (d->style != Normal)
        rect.adjust(-1, 0, 1, 2);

    // Could include font max left/right bearings to either side of rectangle.

    int h = height();
    switch (d->vAlign) {
    case AlignTop:
        break;
    case AlignBottom:
        rect.moveTop(h - rect.height());
        break;
    case AlignVCenter:
        rect.moveTop((h - rect.height()) / 2);
        break;
    }

    return QRectF(rect);
}

/*! \internal */
void QQuickText::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry)
{
    Q_D(QQuickText);
    if (d->text.isEmpty()) {
        QQuickItem::geometryChanged(newGeometry, oldGeometry);
        return;
    }

    bool widthChanged = newGeometry.width() != oldGeometry.width();
    bool heightChanged = newGeometry.height() != oldGeometry.height();
    bool leftAligned = effectiveHAlign() == QQuickText::AlignLeft;
    bool wrapped = d->wrapMode != QQuickText::NoWrap;
    bool elide = d->elideMode != QQuickText::ElideNone;
    bool scaleFont = d->fontSizeMode != QQuickText::FixedSize && (widthValid() || heightValid());

    if ((!widthChanged && !heightChanged) || d->internalWidthUpdate)
        goto geomChangeDone;

    if (leftAligned && !wrapped && !elide && !scaleFont)
        goto geomChangeDone; // left aligned unwrapped text without eliding never needs relayout

    if (!widthChanged && !wrapped && d->singleline && !scaleFont)
        goto geomChangeDone; // only height has changed which doesn't affect single line unwrapped text

    if (!widthChanged && wrapped && d->elideMode != QQuickText::ElideRight && !scaleFont)
        goto geomChangeDone; // only height changed and no multiline eliding.

    if (leftAligned && d->elideMode == QQuickText::ElideRight && !d->truncated && d->singleline
            && !wrapped && newGeometry.width() > oldGeometry.width() && !scaleFont)
        goto geomChangeDone; // Eliding not affected if we're not currently truncated and we get wider.

    if (d->elideMode == QQuickText::ElideRight && wrapped && newGeometry.height() > oldGeometry.height() && !scaleFont) {
        if (!d->truncated)
            goto geomChangeDone; // Multiline eliding not affected if we're not currently truncated and we get higher.
        if (d->maximumLineCountValid && d->lineCount == d->maximumLineCount)
            goto geomChangeDone; // Multiline eliding not affected if we're already at max line count and we get higher.
    }

    if (d->updateOnComponentComplete) {
        // We need to re-elide
        d->updateLayout();
    } else {
        // We just need to re-layout
        d->updateSize();
    }

geomChangeDone:
    QQuickItem::geometryChanged(newGeometry, oldGeometry);
}

void QQuickText::triggerPreprocess()
{
    Q_D(QQuickText);
    if (d->updateType == QQuickTextPrivate::UpdateNone)
        d->updateType = QQuickTextPrivate::UpdatePreprocess;
    update();
}

QSGNode *QQuickText::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *data)
{
    Q_UNUSED(data);
    Q_D(QQuickText);

    if (d->text.isEmpty()) {
        delete oldNode;
        return 0;
    }

    if (d->updateType != QQuickTextPrivate::UpdatePaintNode && oldNode != 0) {
        // Update done in preprocess() in the nodes
        d->updateType = QQuickTextPrivate::UpdateNone;
        return oldNode;
    }

    d->updateType = QQuickTextPrivate::UpdateNone;

    QRectF bounds = boundingRect();

    // We need to make sure the layout is done in the current thread
#if defined(Q_OS_MAC)
    d->paintingThread = QThread::currentThread();
    if (d->layoutThread != d->paintingThread)
        d->updateLayout();
#endif

    QQuickTextNode *node = 0;
    if (!oldNode) {
        node = new QQuickTextNode(QQuickItemPrivate::get(this)->sceneGraphContext(), this);
    } else {
        node = static_cast<QQuickTextNode *>(oldNode);
    }

    node->deleteContent();
    node->setMatrix(QMatrix4x4());

    if (d->richText) {
        d->ensureDoc();
        node->addTextDocument(bounds.topLeft(), d->doc, d->color, d->style, d->styleColor);

    } else if (d->elideMode == QQuickText::ElideNone || bounds.width() > 0.) {
        node->addTextLayout(QPoint(0, bounds.y()), &d->layout, d->color, d->style, d->styleColor);
        if (d->elideLayout)
            node->addTextLayout(QPoint(0, bounds.y()), d->elideLayout, d->color, d->style, d->styleColor);
    }

    foreach (QDeclarativeStyledTextImgTag *img, d->visibleImgTags) {
        QDeclarativePixmap *pix = img->pix;
        if (pix && pix->isReady())
            node->addImage(QRectF(img->pos.x(), img->pos.y() + bounds.y(), pix->width(), pix->height()), pix->image());
    }
    return node;
}

void QQuickText::updatePolish()
{
    Q_D(QQuickText);
    if (d->updateLayoutOnPolish)
        d->updateLayout();
    else
        d->updateSize();
}

/*!
    \qmlproperty real QtQuick2::Text::contentWidth

    Returns the width of the text, including width past the width
    which is covered due to insufficient wrapping if WrapMode is set.
*/
qreal QQuickText::contentWidth() const
{
    Q_D(const QQuickText);
    return d->contentSize.width();
}

/*!
    \qmlproperty real QtQuick2::Text::contentHeight

    Returns the height of the text, including height past the height
    which is covered due to there being more text than fits in the set height.
*/
qreal QQuickText::contentHeight() const
{
    Q_D(const QQuickText);
    return d->contentSize.height();
}

/*!
    \qmlproperty real QtQuick2::Text::lineHeight

    Sets the line height for the text.
    The value can be in pixels or a multiplier depending on lineHeightMode.

    The default value is a multiplier of 1.0.
    The line height must be a positive value.
*/
qreal QQuickText::lineHeight() const
{
    Q_D(const QQuickText);
    return d->lineHeight;
}

void QQuickText::setLineHeight(qreal lineHeight)
{
    Q_D(QQuickText);

    if ((d->lineHeight == lineHeight) || (lineHeight < 0.0))
        return;

    d->lineHeight = lineHeight;
    d->updateLayout();
    emit lineHeightChanged(lineHeight);
}

/*!
    \qmlproperty enumeration QtQuick2::Text::lineHeightMode

    This property determines how the line height is specified.
    The possible values are:

    \list
    \o Text.ProportionalHeight (default) - this sets the spacing proportional to the
       line (as a multiplier). For example, set to 2 for double spacing.
    \o Text.FixedHeight - this sets the line height to a fixed line height (in pixels).
    \endlist
*/
QQuickText::LineHeightMode QQuickText::lineHeightMode() const
{
    Q_D(const QQuickText);
    return d->lineHeightMode;
}

void QQuickText::setLineHeightMode(LineHeightMode mode)
{
    Q_D(QQuickText);
    if (mode == d->lineHeightMode)
        return;

    d->lineHeightMode = mode;
    d->updateLayout();

    emit lineHeightModeChanged(mode);
}

/*!
    \qmlproperty enumeration QtQuick2::Text::fontSizeMode

    This property specifies how the font size of the displayed text is determined.
    The possible values are:

    \list
    \o Text.FixedSize (default) - The size specified by \l font.pixelSize
    or \l font.pointSize is used.
    \o Text.HorizontalFit - The largest size up to the size specified that fits
    within the width of the item without wrapping is used.
    \o Text.VerticalFit - The largest size up to the size specified that fits
    the height of the item is used.
    \o Text.Fit - The largest size up to the size specified the fits within the
    width and height of the item is used.
    \endlist

    The font size of fitted text has a minimum bound specified by the
    minimumPointSize or minimumPixelSize property and maximum bound specified
    by either the \l font.pointSize or \l font.pixelSize properties.

    If the text does not fit within the item bounds with the minimum font size
    the text will be elided as per the \l elide property.
*/

QQuickText::FontSizeMode QQuickText::fontSizeMode() const
{
    Q_D(const QQuickText);
    return d->fontSizeMode;
}

void QQuickText::setFontSizeMode(FontSizeMode mode)
{
    Q_D(QQuickText);
    if (d->fontSizeMode == mode)
        return;

    polish();

    d->fontSizeMode = mode;
    emit fontSizeModeChanged();
}

/*!
    \qmlproperty int QtQuick2::Text::minimumPixelSize

    This property specifies the minimum font pixel size of text scaled by the
    fontSizeMode property.

    If the fontSizeMode is Text.FixedSize or the \l font.pixelSize is -1 this
    property is ignored.
*/

int QQuickText::minimumPixelSize() const
{
    Q_D(const QQuickText);
    return d->minimumPixelSize;
}

void QQuickText::setMinimumPixelSize(int size)
{
    Q_D(QQuickText);
    if (d->minimumPixelSize == size)
        return;

    if (d->fontSizeMode != FixedSize && (widthValid() || heightValid()))
        polish();
    d->minimumPixelSize = size;
    emit minimumPixelSizeChanged();
}

/*!
    \qmlproperty int QtQuick2::Text::minimumPointSize

    This property specifies the minimum font point \l size of text scaled by
    the fontSizeMode property.

    If the fontSizeMode is Text.FixedSize or the \l font.pointSize is -1 this
    property is ignored.
*/

int QQuickText::minimumPointSize() const
{
    Q_D(const QQuickText);
    return d->minimumPointSize;
}

void QQuickText::setMinimumPointSize(int size)
{
    Q_D(QQuickText);
    if (d->minimumPointSize == size)
        return;

    if (d->fontSizeMode != FixedSize && (widthValid() || heightValid()))
        polish();
    d->minimumPointSize = size;
    emit minimumPointSizeChanged();
}

/*!
    Returns the number of resources (images) that are being loaded asynchronously.
*/
int QQuickText::resourcesLoading() const
{
    Q_D(const QQuickText);
    return d->doc ? d->doc->resourcesLoading() : 0;
}

/*! \internal */
void QQuickText::componentComplete()
{
    Q_D(QQuickText);
    if (d->updateOnComponentComplete) {
        if (d->richText) {
            d->ensureDoc();
            d->doc->setText(d->text);
            d->rightToLeftText = d->doc->toPlainText().isRightToLeft();
        } else {
            d->rightToLeftText = d->text.isRightToLeft();
        }
        d->determineHorizontalAlignment();
    }
    QQuickItem::componentComplete();
    if (d->updateOnComponentComplete)
        d->updateLayout();

    // Enable accessibility for text items.
    d->setAccessibleFlagAndListener();
}


QString QQuickTextPrivate::anchorAt(const QPointF &mousePos)
{
    if (styledText) {
        for (int i = 0; i < layout.lineCount(); ++i) {
            QTextLine line = layout.lineAt(i);
            if (line.naturalTextRect().contains(mousePos)) {
                int charPos = line.xToCursor(mousePos.x());
                foreach (const QTextLayout::FormatRange &formatRange, layout.additionalFormats()) {
                    if (formatRange.format.isAnchor()
                            && charPos >= formatRange.start
                            && charPos <= formatRange.start + formatRange.length) {
                        return formatRange.format.anchorHref();
                    }
                }
                break;
            }
        }
    }
    return QString();
}

bool QQuickTextPrivate::isLinkActivatedConnected()
{
    static int idx = this->signalIndex("linkActivated(QString)");
    return this->isSignalConnected(idx);
}

/*!  \internal */
void QQuickText::mousePressEvent(QMouseEvent *event)
{
    Q_D(QQuickText);

    if (d->isLinkActivatedConnected()) {
        if (d->styledText)
            d->activeLink = d->anchorAt(event->localPos());
        else if (d->richText && d->doc)
            d->activeLink = d->doc->documentLayout()->anchorAt(event->localPos());
    }

    if (d->activeLink.isEmpty())
        event->setAccepted(false);

    // ### may malfunction if two of the same links are clicked & dragged onto each other)

    if (!event->isAccepted())
        QQuickItem::mousePressEvent(event);

}

/*! \internal */
void QQuickText::mouseReleaseEvent(QMouseEvent *event)
{
    Q_D(QQuickText);

    // ### confirm the link, and send a signal out

    QString link;
    if (d->isLinkActivatedConnected()) {
        if (d->styledText)
            link = d->anchorAt(event->localPos());
        else if (d->richText && d->doc)
            link = d->doc->documentLayout()->anchorAt(event->localPos());
    }

    if (!link.isEmpty() && d->activeLink == link)
        emit linkActivated(d->activeLink);
    else
        event->setAccepted(false);

    if (!event->isAccepted())
        QQuickItem::mouseReleaseEvent(event);
}

QT_END_NAMESPACE