summaryrefslogtreecommitdiff
path: root/src/location/declarativemaps/qdeclarativegeomap.cpp
blob: 7087a50fc0c631e50b49b1bb443cdf0d0a6eab4f (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
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtLocation module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later 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 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qdeclarativegeomap_p.h"
#include "qdeclarativegeomapquickitem_p.h"
#include "qdeclarativegeomapcopyrightsnotice_p.h"
#include "qdeclarativegeoserviceprovider_p.h"
#include "qdeclarativegeomaptype_p.h"
#include "qgeomappingmanager_p.h"
#include "qgeocameracapabilities_p.h"
#include "qgeomap_p.h"
#include "qdeclarativegeomapparameter_p.h"
#include <QtPositioning/QGeoCircle>
#include <QtPositioning/QGeoRectangle>
#include <QtPositioning/QGeoPath>
#include <QtPositioning/QGeoPolygon>
#include <QtQuick/QQuickWindow>
#include <QtQuick/QSGRectangleNode>
#include <QtQuick/private/qquickwindow_p.h>
#include <QtQml/qqmlinfo.h>
#include <cmath>

#ifndef M_PI
#define M_PI 3.141592653589793238463
#endif


QT_BEGIN_NAMESPACE

/*!
    \qmltype Map
    \instantiates QDeclarativeGeoMap
    \inqmlmodule QtLocation
    \ingroup qml-QtLocation5-maps
    \since Qt Location 5.0

    \brief The Map type displays a map.

    The Map type is used to display a map or image of the Earth, with
    the capability to also display interactive objects tied to the map's
    surface.

    There are a variety of different ways to visualize the Earth's surface
    in a 2-dimensional manner, but all of them involve some kind of projection:
    a mathematical relationship between the 3D coordinates (latitude, longitude
    and altitude) and 2D coordinates (X and Y in pixels) on the screen.

    Different sources of map data can use different projections, and from the
    point of view of the Map type, we treat these as one replaceable unit:
    the Map plugin. A Map plugin consists of a data source, as well as all other
    details needed to display its data on-screen.

    The current Map plugin in use is contained in the \l plugin property of
    the Map item. In order to display any image in a Map item, you will need
    to set this property. See the \l Plugin type for a description of how
    to retrieve an appropriate plugin for use.

    The geographic region displayed in the Map item is referred to as its
    viewport, and this is defined by the properties \l center, and
    \l zoomLevel. The \l center property contains a \l {coordinate}
    specifying the center of the viewport, while \l zoomLevel controls the scale of the
    map. See each of these properties for further details about their values.

    When the map is displayed, each possible geographic coordinate that is
    visible will map to some pixel X and Y coordinate on the screen. To perform
    conversions between these two, Map provides the \l toCoordinate and
    \l fromCoordinate functions, which are of general utility.

    \section2 Map Objects

    Map related objects can be declared within the body of a Map object in Qt Quick and will
    automatically appear on the Map. To add objects programmatically, first be
    sure they are created with the Map as their parent (for example in an argument to
    Component::createObject), and then call the \l addMapItem method on the Map.
    A corresponding \l removeMapItem method also exists to do the opposite and
    remove an object from the Map.

    Moving Map objects around, resizing them or changing their shape normally
    does not involve any special interaction with Map itself -- changing these
    details about a map object will automatically update the display.

    \section2 Interaction

    The Map type includes support for pinch and flick gestures to control
    zooming and panning. These are enabled by default, and available at any
    time by using the \l gesture object. The actual GestureArea is constructed
    specially at startup and cannot be replaced or destroyed. Its properties
    can be altered, however, to control its behavior.

    \section2 Performance

    Maps are rendered using OpenGL (ES) and the Qt Scene Graph stack, and as
    a result perform quite well where GL accelerated hardware is available.

    For "online" Map plugins, network bandwidth and latency can be major
    contributors to the user's perception of performance. Extensive caching is
    performed to mitigate this, but such mitigation is not always perfect. For
    "offline" plugins, the time spent retrieving the stored geographic data
    and rendering the basic map features can often play a dominant role. Some
    offline plugins may use hardware acceleration themselves to (partially)
    avert this.

    In general, large and complex Map items such as polygons and polylines with
    large numbers of vertices can have an adverse effect on UI performance.
    Further, more detailed notes on this are in the documentation for each
    map item type.

    \section2 Example Usage

    The following snippet shows a simple Map and the necessary Plugin type
    to use it. The map is centered over Oslo, Norway, with zoom level 14.

    \quotefromfile minimal_map/main.qml
    \skipto import
    \printuntil }
    \printline }
    \skipto Map
    \printuntil }
    \printline }

    \image minimal_map.png
*/

/*!
    \qmlsignal QtLocation::Map::copyrightLinkActivated(string link)

    This signal is emitted when the user clicks on a \a link in the copyright notice. The
    application should open the link in a browser or display its contents to the user.
*/

QDeclarativeGeoMap::QDeclarativeGeoMap(QQuickItem *parent)
        : QQuickItem(parent),
        m_plugin(0),
        m_mappingManager(0),
        m_activeMapType(0),
        m_gestureArea(new QQuickGeoMapGestureArea(this)),
        m_map(0),
        m_error(QGeoServiceProvider::NoError),
        m_color(QColor::fromRgbF(0.9, 0.9, 0.9)),
        m_componentCompleted(false),
        m_pendingFitViewport(false),
        m_copyrightsVisible(true),
        m_maximumViewportLatitude(0.0),
        m_initialized(false),
        m_userMinimumZoomLevel(qQNaN()),
        m_userMaximumZoomLevel(qQNaN()),
        m_userMinimumTilt(qQNaN()),
        m_userMaximumTilt(qQNaN()),
        m_userMinimumFieldOfView(qQNaN()),
        m_userMaximumFieldOfView(qQNaN())
{
    setAcceptHoverEvents(false);
    setAcceptedMouseButtons(Qt::LeftButton);
    setFlags(QQuickItem::ItemHasContents | QQuickItem::ItemClipsChildrenToShape);
    setFiltersChildMouseEvents(true);

    connect(this, SIGNAL(childrenChanged()), this, SLOT(onMapChildrenChanged()), Qt::QueuedConnection);

    m_activeMapType = new QDeclarativeGeoMapType(QGeoMapType(QGeoMapType::NoMap,
                                                             tr("No Map"),
                                                             tr("No Map"),
                                                             false, false,
                                                             0,
                                                             QByteArrayLiteral(""),
                                                             QGeoCameraCapabilities()), this);
    m_cameraData.setCenter(QGeoCoordinate(51.5073,-0.1277)); //London city center
    m_cameraData.setZoomLevel(8.0);

    m_cameraCapabilities.setTileSize(256);
    m_cameraCapabilities.setSupportsBearing(true);
    m_cameraCapabilities.setSupportsTilting(true);
    m_cameraCapabilities.setMinimumZoomLevel(0);
    m_cameraCapabilities.setMaximumZoomLevel(30);
    m_cameraCapabilities.setMinimumTilt(0);
    m_cameraCapabilities.setMaximumTilt(89.5);
    m_cameraCapabilities.setMinimumFieldOfView(1);
    m_cameraCapabilities.setMaximumFieldOfView(179);

    m_minimumTilt = m_cameraCapabilities.minimumTilt();
    m_maximumTilt = m_cameraCapabilities.maximumTilt();
    m_minimumFieldOfView = m_cameraCapabilities.minimumFieldOfView();
    m_maximumFieldOfView = m_cameraCapabilities.maximumFieldOfView();
}

QDeclarativeGeoMap::~QDeclarativeGeoMap()
{
    // Removing map parameters and map items from m_map
    if (m_map) {
        m_map->clearParameters();
        m_map->clearMapItems();
    }

    // This forces the destruction of the associated items now, not when QObject destructor is called, at which point
    // QDeclarativeGeoMap is long gone
    if (!m_mapViews.isEmpty()) {
        for (QDeclarativeGeoMapItemView *v : qAsConst(m_mapViews)) {
            if (!v)
                continue;
            if (v->parent() == this)
                delete v;
            else
                v->removeInstantiatedItems();
        }
    }
    // remove any map items associations
    for (int i = 0; i < m_mapItems.count(); ++i) {
        if (m_mapItems.at(i))
            m_mapItems.at(i).data()->setMap(0,0);
    }
    m_mapItems.clear();

    for (auto g: qAsConst(m_mapItemGroups)) {
        if (!g)
            continue;
        const QList<QQuickItem *> quickKids = g->childItems();
        for (auto c: quickKids) {
            QDeclarativeGeoMapItemBase *itemBase = qobject_cast<QDeclarativeGeoMapItemBase *>(c);
            if (itemBase)
                itemBase->setMap(0,0);
        }
    }
    m_mapItemGroups.clear();

    delete m_copyrights.data();
    m_copyrights.clear();

    delete m_map;
}

/*!
    \internal
*/
void QDeclarativeGeoMap::onMapChildrenChanged()
{
    if (!m_componentCompleted || !m_map)
        return;

    int maxChildZ = 0;
    QObjectList kids = children();
    bool foundCopyrights = false;

    for (int i = 0; i < kids.size(); ++i) {
        QDeclarativeGeoMapCopyrightNotice *copyrights = qobject_cast<QDeclarativeGeoMapCopyrightNotice *>(kids.at(i));
        if (copyrights) {
            foundCopyrights = true;
        } else {
            QDeclarativeGeoMapItemBase *mapItem = qobject_cast<QDeclarativeGeoMapItemBase *>(kids.at(i));
            if (mapItem) {
                if (mapItem->z() > maxChildZ)
                    maxChildZ = mapItem->z();
            }
        }
    }

    QDeclarativeGeoMapCopyrightNotice *copyrights = m_copyrights.data();
    // if copyrights object not found within the map's children
    if (!foundCopyrights) {
        // if copyrights object was deleted!
        if (!copyrights) {
            // create a new one and set its parent, re-assign it to the weak pointer, then connect the copyrights-change signal
            m_copyrights = new QDeclarativeGeoMapCopyrightNotice(this);
            m_copyrights->onCopyrightsStyleSheetChanged(m_map->copyrightsStyleSheet());

            copyrights = m_copyrights.data();

            connect(m_map, SIGNAL(copyrightsChanged(QImage)),
                    copyrights, SLOT(copyrightsChanged(QImage)));
            connect(m_map, SIGNAL(copyrightsChanged(QImage)),
                    this,  SIGNAL(copyrightsChanged(QImage)));

            connect(m_map, SIGNAL(copyrightsChanged(QString)),
                    copyrights, SLOT(copyrightsChanged(QString)));
            connect(m_map, SIGNAL(copyrightsChanged(QString)),
                    this,  SIGNAL(copyrightsChanged(QString)));

            connect(m_map, SIGNAL(copyrightsStyleSheetChanged(QString)),
                    copyrights, SLOT(onCopyrightsStyleSheetChanged(QString)));

            connect(copyrights, SIGNAL(linkActivated(QString)),
                    this, SIGNAL(copyrightLinkActivated(QString)));

            // set visibility of copyright notice
            copyrights->setCopyrightsVisible(m_copyrightsVisible);

        } else {
            // just re-set its parent.
            copyrights->setParent(this);
        }
    }

    // put the copyrights notice object at the highest z order
    copyrights->setCopyrightsZ(maxChildZ + 1);
}

static QDeclarativeGeoMapType *findMapType(const QList<QDeclarativeGeoMapType *> &types, const QGeoMapType &type)
{
    for (int i = 0; i < types.size(); ++i)
        if (types[i]->mapType() == type)
            return types[i];
    return Q_NULLPTR;
}

void QDeclarativeGeoMap::onSupportedMapTypesChanged()
{
    QList<QDeclarativeGeoMapType *> supportedMapTypes;
    QList<QGeoMapType> types = m_mappingManager->supportedMapTypes();
    for (int i = 0; i < types.size(); ++i) {
        // types that are present and get removed will be deleted at QObject destruction
        QDeclarativeGeoMapType *type = findMapType(m_supportedMapTypes, types[i]);
        if (!type)
            type = new QDeclarativeGeoMapType(types[i], this);
        supportedMapTypes.append(type);
    }
    m_supportedMapTypes.swap(supportedMapTypes);
    if (m_supportedMapTypes.isEmpty()) {
        m_map->setActiveMapType(QGeoMapType()); // no supported map types: setting an invalid one
    } else {
        bool hasMapType = false;
        foreach (QDeclarativeGeoMapType *declarativeType, m_supportedMapTypes) {
            if (declarativeType->mapType() == m_map->activeMapType())
                hasMapType = true;
        }
        if (!hasMapType) {
            QDeclarativeGeoMapType *type = m_supportedMapTypes.at(0);
            m_activeMapType = type;
            m_map->setActiveMapType(type->mapType());
        }
    }

    emit supportedMapTypesChanged();
}

void QDeclarativeGeoMap::setError(QGeoServiceProvider::Error error, const QString &errorString)
{
    if (m_error == error && m_errorString == errorString)
        return;
    m_error = error;
    m_errorString = errorString;
    emit errorChanged();
}

/*!
    \internal
    Called when the mapping manager is initialized AND the declarative element has a valid size > 0
*/
void QDeclarativeGeoMap::initialize()
{
    // try to keep change signals in the end
    bool centerHasChanged = false;
    bool bearingHasChanged = false;
    bool tiltHasChanged = false;
    bool fovHasChanged = false;

    QGeoCoordinate center = m_cameraData.center();

    if (qIsNaN(m_userMinimumZoomLevel))
        setMinimumZoomLevel(m_map->minimumZoom(), false);
    else
        setMinimumZoomLevel(qMax<qreal>(m_map->minimumZoom(), m_userMinimumZoomLevel), false);

    double bearing = m_cameraData.bearing();
    double tilt = m_cameraData.tilt();
    double fov = m_cameraData.fieldOfView(); // Must be 45.0

    if (!m_cameraCapabilities.supportsBearing() && bearing != 0.0) {
        m_cameraData.setBearing(0);
        bearingHasChanged = true;
    }
    if (!m_cameraCapabilities.supportsTilting() && tilt != 0.0) {
        m_cameraData.setTilt(0);
        tiltHasChanged = true;
    }

    m_cameraData.setFieldOfView(qBound(m_cameraCapabilities.minimumFieldOfView(),
                                       fov,
                                       m_cameraCapabilities.maximumFieldOfView()));
    if (fov != m_cameraData.fieldOfView())
        fovHasChanged  = true;

    // set latitude boundary check
    m_maximumViewportLatitude = m_map->maximumCenterLatitudeAtZoom(m_cameraData);

    center.setLatitude(qBound(-m_maximumViewportLatitude, center.latitude(), m_maximumViewportLatitude));

    if (center != m_cameraData.center()) {
        centerHasChanged = true;
        m_cameraData.setCenter(center);
    }

    m_map->setCameraData(m_cameraData);

    m_initialized = true;

    if (centerHasChanged)
        emit centerChanged(m_cameraData.center());

    if (bearingHasChanged)
        emit bearingChanged(m_cameraData.bearing());

    if (tiltHasChanged)
        emit tiltChanged(m_cameraData.tilt());

    if (fovHasChanged)
        emit fieldOfViewChanged(m_cameraData.fieldOfView());

    emit mapReadyChanged(true);

    if (m_copyrights)
         update();
}

/*!
    \internal
*/
void QDeclarativeGeoMap::pluginReady()
{
    QGeoServiceProvider *provider = m_plugin->sharedGeoServiceProvider();
    m_mappingManager = provider->mappingManager();

    if (provider->error() != QGeoServiceProvider::NoError) {
        setError(provider->error(), provider->errorString());
        return;
    }

    if (!m_mappingManager) {
        //TODO Should really be EngineNotSetError (see QML GeoCodeModel)
        setError(QGeoServiceProvider::NotSupportedError, tr("Plugin does not support mapping."));
        return;
    }

    if (!m_mappingManager->isInitialized())
        connect(m_mappingManager, SIGNAL(initialized()), this, SLOT(mappingManagerInitialized()));
    else
        mappingManagerInitialized();

    // make sure this is only called once
    disconnect(this, SLOT(pluginReady()));
}

/*!
    \internal
*/
void QDeclarativeGeoMap::componentComplete()
{
    m_componentCompleted = true;
    populateParameters();
    populateMap();
    QQuickItem::componentComplete();
}

/*!
    \internal
*/
void QDeclarativeGeoMap::mousePressEvent(QMouseEvent *event)
{
    if (isInteractive())
        m_gestureArea->handleMousePressEvent(event);
    else
        QQuickItem::mousePressEvent(event);
}

/*!
    \internal
*/
void QDeclarativeGeoMap::mouseMoveEvent(QMouseEvent *event)
{
    if (isInteractive())
        m_gestureArea->handleMouseMoveEvent(event);
    else
        QQuickItem::mouseMoveEvent(event);
}

/*!
    \internal
*/
void QDeclarativeGeoMap::mouseReleaseEvent(QMouseEvent *event)
{
    if (isInteractive()) {
        m_gestureArea->handleMouseReleaseEvent(event);
    } else {
        QQuickItem::mouseReleaseEvent(event);
    }
}

/*!
    \internal
*/
void QDeclarativeGeoMap::mouseUngrabEvent()
{
    if (isInteractive())
        m_gestureArea->handleMouseUngrabEvent();
    else
        QQuickItem::mouseUngrabEvent();
}

void QDeclarativeGeoMap::touchUngrabEvent()
{
    if (isInteractive())
        m_gestureArea->handleTouchUngrabEvent();
    else
        QQuickItem::touchUngrabEvent();
}

/*!
    \qmlproperty MapGestureArea QtLocation::Map::gesture

    Contains the MapGestureArea created with the Map. This covers pan, flick and pinch gestures.
    Use \c{gesture.enabled: true} to enable basic gestures, or see \l{MapGestureArea} for
    further details.
*/

QQuickGeoMapGestureArea *QDeclarativeGeoMap::gesture()
{
    return m_gestureArea;
}

/*!
    \internal

    This may happen before mappingManagerInitialized()
*/
void QDeclarativeGeoMap::populateMap()
{
    QSet<QObject *> kids = children().toSet();
    const QList<QQuickItem *> quickKids = childItems();
    for (QQuickItem *ite: quickKids)
        kids.insert(ite);

    for (QObject *k : qAsConst(kids)) {
        // dispatch items appropriately
        QDeclarativeGeoMapItemView *mapView = qobject_cast<QDeclarativeGeoMapItemView *>(k);
        if (mapView) {
            m_mapViews.append(mapView);
            setupMapView(mapView);
            continue;
        }
        QDeclarativeGeoMapItemBase *mapItem = qobject_cast<QDeclarativeGeoMapItemBase *>(k);
        if (mapItem) {
            addMapItem(mapItem);
            continue;
        }
        // Allow to add to the map Map items contained inside a parent QQuickItem, but only those at one level of nesting.
        QDeclarativeGeoMapItemGroup *itemGroup = qobject_cast<QDeclarativeGeoMapItemGroup *>(k);
        if (itemGroup) {
            addMapItemGroup(itemGroup);
            continue;
        }
    }
}

void QDeclarativeGeoMap::populateParameters()
{
    QObjectList kids = children();
    QList<QQuickItem *> quickKids = childItems();
    for (int i = 0; i < quickKids.count(); ++i)
        kids.append(quickKids.at(i));
    for (int i = 0; i < kids.size(); ++i) {
        QDeclarativeGeoMapParameter *mapParameter = qobject_cast<QDeclarativeGeoMapParameter *>(kids.at(i));
        if (mapParameter)
            addMapParameter(mapParameter);
    }
}

/*!
    \internal
*/
void QDeclarativeGeoMap::setupMapView(QDeclarativeGeoMapItemView *view)
{
    Q_UNUSED(view)
    view->setMap(this);
    view->repopulate();
}

/*!
 * \internal
 */
QSGNode *QDeclarativeGeoMap::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
{
    if (!m_map) {
        delete oldNode;
        return 0;
    }

    QSGRectangleNode *root = static_cast<QSGRectangleNode *>(oldNode);
    if (!root)
        root = window()->createRectangleNode();

    root->setRect(boundingRect());
    root->setColor(m_color);

    QSGNode *content = root->childCount() ? root->firstChild() : 0;
    content = m_map->updateSceneGraph(content, window());
    if (content && root->childCount() == 0)
        root->appendChildNode(content);

    return root;
}

/*!
    \qmlproperty Plugin QtLocation::Map::plugin

    This property holds the plugin which provides the mapping functionality.

    This is a write-once property. Once the map has a plugin associated with
    it, any attempted modifications of the plugin will be ignored.
*/

void QDeclarativeGeoMap::setPlugin(QDeclarativeGeoServiceProvider *plugin)
{
    if (m_plugin) {
        qmlWarning(this) << QStringLiteral("Plugin is a write-once property, and cannot be set again.");
        return;
    }
    m_plugin = plugin;
    emit pluginChanged(m_plugin);

    if (m_plugin->isAttached()) {
        pluginReady();
    } else {
        connect(m_plugin, SIGNAL(attached()),
                this, SLOT(pluginReady()));
    }
}

/*!
    \internal
*/
void QDeclarativeGeoMap::onCameraCapabilitiesChanged(const QGeoCameraCapabilities &oldCameraCapabilities)
{
    if (m_map->cameraCapabilities() == oldCameraCapabilities)
        return;
    m_cameraCapabilities = m_map->cameraCapabilities();

    //The zoom level limits are only restricted by the plugins values, if the user has set a more
    //strict zoom level limit before initialization nothing is done here.
    //minimum zoom level might be changed to limit gray bundaries
    //This code assumes that plugins' maximum zoom level will never exceed 30.0
    if (m_cameraCapabilities.maximumZoomLevelAt256() < m_gestureArea->maximumZoomLevel()) {
        setMaximumZoomLevel(m_cameraCapabilities.maximumZoomLevelAt256(), false);
    } else if (m_cameraCapabilities.maximumZoomLevelAt256() > m_gestureArea->maximumZoomLevel()) {
        if (qIsNaN(m_userMaximumZoomLevel)) {
            // If the user didn't set anything
            setMaximumZoomLevel(m_cameraCapabilities.maximumZoomLevelAt256(), false);
        } else {  // Try to set what the user requested
            // Else if the user set something larger, but that got clamped by the previous camera caps
            setMaximumZoomLevel(qMin<qreal>(m_cameraCapabilities.maximumZoomLevelAt256(),
                                            m_userMaximumZoomLevel), false);
        }
    }

    if (m_cameraCapabilities.minimumZoomLevelAt256() > m_gestureArea->minimumZoomLevel()) {
        setMinimumZoomLevel(m_cameraCapabilities.minimumZoomLevelAt256(), false);
    } else if (m_cameraCapabilities.minimumZoomLevelAt256() < m_gestureArea->minimumZoomLevel()) {
        if (qIsNaN(m_userMinimumZoomLevel)) {
            // If the user didn't set anything, trying to set the new caps.
            setMinimumZoomLevel(m_cameraCapabilities.minimumZoomLevelAt256(), false);
        } else {  // Try to set what the user requested
            // Else if the user set a minimum, m_gestureArea->minimumZoomLevel() might be larger
            // because of different reasons. Resetting it, as if it ends to be the same,
            // no signal will be emitted.
            setMinimumZoomLevel(qMax<qreal>(m_cameraCapabilities.minimumZoomLevelAt256(),
                                            m_userMinimumZoomLevel), false);
        }
    }

    // Tilt
    if (m_cameraCapabilities.maximumTilt() < m_maximumTilt) {
        setMaximumTilt(m_cameraCapabilities.maximumTilt(), false);
    } else if (m_cameraCapabilities.maximumTilt() > m_maximumTilt) {
        if (qIsNaN(m_userMaximumTilt))
            setMaximumTilt(m_cameraCapabilities.maximumTilt(), false);
        else // Try to set what the user requested
            setMaximumTilt(qMin<qreal>(m_cameraCapabilities.maximumTilt(), m_userMaximumTilt), false);
    }

    if (m_cameraCapabilities.minimumTilt() > m_minimumTilt) {
        setMinimumTilt(m_cameraCapabilities.minimumTilt(), false);
    } else if (m_cameraCapabilities.minimumTilt() < m_minimumTilt) {
        if (qIsNaN(m_userMinimumTilt))
            setMinimumTilt(m_cameraCapabilities.minimumTilt(), false);
        else // Try to set what the user requested
            setMinimumTilt(qMax<qreal>(m_cameraCapabilities.minimumTilt(), m_userMinimumTilt), false);
    }

    // FoV
    if (m_cameraCapabilities.maximumFieldOfView() < m_maximumFieldOfView) {
        setMaximumFieldOfView(m_cameraCapabilities.maximumFieldOfView(), false);
    } else if (m_cameraCapabilities.maximumFieldOfView() > m_maximumFieldOfView) {
        if (qIsNaN(m_userMaximumFieldOfView))
            setMaximumFieldOfView(m_cameraCapabilities.maximumFieldOfView(), false);
        else // Try to set what the user requested
            setMaximumFieldOfView(qMin<qreal>(m_cameraCapabilities.maximumFieldOfView(), m_userMaximumFieldOfView), false);
    }

    if (m_cameraCapabilities.minimumFieldOfView() > m_minimumFieldOfView) {
        setMinimumFieldOfView(m_cameraCapabilities.minimumFieldOfView(), false);
    } else if (m_cameraCapabilities.minimumFieldOfView() < m_minimumFieldOfView) {
        if (qIsNaN(m_userMinimumFieldOfView))
            setMinimumFieldOfView(m_cameraCapabilities.minimumFieldOfView(), false);
        else // Try to set what the user requested
            setMinimumFieldOfView(qMax<qreal>(m_cameraCapabilities.minimumFieldOfView(), m_userMinimumFieldOfView), false);
    }
}


/*!
    \internal
    this function will only be ever called once
*/
void QDeclarativeGeoMap::mappingManagerInitialized()
{
    m_map = m_mappingManager->createMap(this);

    if (!m_map)
        return;

    m_gestureArea->setMap(m_map);

    QList<QGeoMapType> types = m_mappingManager->supportedMapTypes();
    for (int i = 0; i < types.size(); ++i) {
        QDeclarativeGeoMapType *type = new QDeclarativeGeoMapType(types[i], this);
        m_supportedMapTypes.append(type);
    }

    if (m_activeMapType && m_plugin->name().toLatin1() == m_activeMapType->mapType().pluginName()) {
        m_map->setActiveMapType(m_activeMapType->mapType());
    } else {
        if (m_activeMapType)
            m_activeMapType->deleteLater();

        if (!m_supportedMapTypes.isEmpty()) {
                m_activeMapType = m_supportedMapTypes.at(0);
                m_map->setActiveMapType(m_activeMapType->mapType());
        } else {
            m_activeMapType = new QDeclarativeGeoMapType(QGeoMapType(QGeoMapType::NoMap,
                                                                     tr("No Map"),
                                                                     tr("No Map"),
                                                                     false,
                                                                     false,
                                                                     0,
                                                                     QByteArrayLiteral(""),
                                                                     QGeoCameraCapabilities()), this);
        }
    }

    // Update camera capabilities
    onCameraCapabilitiesChanged(m_cameraCapabilities);

    // Map tiles are built in this call. m_map->minimumZoom() becomes operational
    // after this has been called at least once, after creation.
    // However, getting into the following block may fire a copyrightsChanged that would get lost,
    // as the connections are set up after.
    QString copyrightString;
    QImage copyrightImage;
    if (!m_initialized && width() > 0 && height() > 0) {
        QMetaObject::Connection copyrightStringCatcherConnection =
                connect(m_map,
                        QOverload<const QString &>::of(&QGeoMap::copyrightsChanged),
                        [&copyrightString](const QString &copy){ copyrightString = copy; });
        QMetaObject::Connection copyrightImageCatcherConnection =
                connect(m_map,
                        QOverload<const QImage &>::of(&QGeoMap::copyrightsChanged),
                        [&copyrightImage](const QImage &copy){ copyrightImage = copy; });
        m_map->setViewportSize(QSize(width(), height()));
        initialize();
        QObject::disconnect(copyrightStringCatcherConnection);
        QObject::disconnect(copyrightImageCatcherConnection);
    }

    m_copyrights = new QDeclarativeGeoMapCopyrightNotice(this);
    m_copyrights->onCopyrightsStyleSheetChanged(m_map->copyrightsStyleSheet());

    connect(m_map, SIGNAL(copyrightsChanged(QImage)),
            m_copyrights.data(), SLOT(copyrightsChanged(QImage)));
    connect(m_map, SIGNAL(copyrightsChanged(QImage)),
            this,  SIGNAL(copyrightsChanged(QImage)));

    connect(m_map, SIGNAL(copyrightsChanged(QString)),
            m_copyrights.data(), SLOT(copyrightsChanged(QString)));
    connect(m_map, SIGNAL(copyrightsChanged(QString)),
            this,  SIGNAL(copyrightsChanged(QString)));

    if (!copyrightString.isEmpty())
        emit m_map->copyrightsChanged(copyrightString);
    else if (!copyrightImage.isNull())
        emit m_map->copyrightsChanged(copyrightImage);

    connect(m_map, SIGNAL(copyrightsStyleSheetChanged(QString)),
            m_copyrights.data(), SLOT(onCopyrightsStyleSheetChanged(QString)));

    connect(m_copyrights.data(), SIGNAL(linkActivated(QString)),
            this, SIGNAL(copyrightLinkActivated(QString)));
    connect(m_map, &QGeoMap::sgNodeChanged, this, &QQuickItem::update);
    connect(m_map, &QGeoMap::cameraCapabilitiesChanged, this, &QDeclarativeGeoMap::onCameraCapabilitiesChanged);

    // set visibility of copyright notice
    m_copyrights->setCopyrightsVisible(m_copyrightsVisible);

    // This prefetches a buffer around the map
    m_map->prefetchData();

    connect(m_mappingManager, SIGNAL(supportedMapTypesChanged()), this, SLOT(onSupportedMapTypesChanged()));
    emit minimumZoomLevelChanged();
    emit maximumZoomLevelChanged();
    emit supportedMapTypesChanged();
    emit activeMapTypeChanged();

    // Any map items that were added before the plugin was ready
    // need to have setMap called again
    for (const QPointer<QDeclarativeGeoMapItemBase> &item : qAsConst(m_mapItems)) {
        if (item) {
            item->setMap(this, m_map);
            m_map->addMapItem(item.data()); // m_map filters out what is not supported.
        }
    }

    // Any map item groups that were added before the plugin was ready
    // need to have setMap called again on their children map items
    for (auto g: qAsConst(m_mapItemGroups)) {
        const QList<QQuickItem *> quickKids = g->childItems();
        for (auto c: quickKids) {
            QDeclarativeGeoMapItemBase *itemBase = qobject_cast<QDeclarativeGeoMapItemBase *>(c);
            if (itemBase)
                itemBase->setMap(this, m_map);
        }
    }

    // All map parameters that were added before the plugin was ready
    // need to be added to m_map
    for (QDeclarativeGeoMapParameter *p : qAsConst(m_mapParameters))
        m_map->addParameter(p);

    if (m_initialized)
        update();
}

/*!
    \internal
*/
QDeclarativeGeoServiceProvider *QDeclarativeGeoMap::plugin() const
{
    return m_plugin;
}

/*!
    \internal
    Sets the gesture areas minimum zoom level. If the camera capabilities
    has been set this method honors the boundaries set by it.
    The minimum zoom level will also have a lower bound dependent on the size
    of the canvas, effectively preventing to display out of bounds areas.
*/
void QDeclarativeGeoMap::setMinimumZoomLevel(qreal minimumZoomLevel, bool userSet)
{

    if (minimumZoomLevel >= 0) {
        if (userSet)
            m_userMinimumZoomLevel = minimumZoomLevel;
        qreal oldMinimumZoomLevel = this->minimumZoomLevel();

        minimumZoomLevel = qBound(qreal(m_cameraCapabilities.minimumZoomLevelAt256()), minimumZoomLevel, maximumZoomLevel());
        if (m_map)
             minimumZoomLevel = qMax<qreal>(minimumZoomLevel, m_map->minimumZoom());

        m_gestureArea->setMinimumZoomLevel(minimumZoomLevel);

        if (zoomLevel() < minimumZoomLevel && (m_gestureArea->enabled() || !m_cameraCapabilities.overzoomEnabled()))
            setZoomLevel(minimumZoomLevel);

        if (oldMinimumZoomLevel != minimumZoomLevel)
            emit minimumZoomLevelChanged();
    }
}

/*!
    \qmlproperty real QtLocation::Map::minimumZoomLevel

    This property holds the minimum valid zoom level for the map.

    The minimum zoom level defined by the \l plugin used is a lower bound for
    this property. However, the returned value is also canvas-size-dependent, and
    can be higher than the user-specified value, or than the minimum zoom level
    defined by the plugin used, to prevent the map from being smaller than the
    viewport in either dimension.

    If the \l plugin property is not set or the plugin does not support mapping, this property is \c 0.
*/

qreal QDeclarativeGeoMap::minimumZoomLevel() const
{
    return m_gestureArea->minimumZoomLevel();
}

/*!
    \internal
    Sets the gesture areas maximum zoom level. If the camera capabilities
    has been set this method honors the boundaries set by it.
*/
void QDeclarativeGeoMap::setMaximumZoomLevel(qreal maximumZoomLevel, bool userSet)
{
    if (maximumZoomLevel >= 0) {
        if (userSet)
            m_userMaximumZoomLevel = maximumZoomLevel;
        qreal oldMaximumZoomLevel = this->maximumZoomLevel();

        maximumZoomLevel = qBound(minimumZoomLevel(), maximumZoomLevel, qreal(m_cameraCapabilities.maximumZoomLevelAt256()));

        m_gestureArea->setMaximumZoomLevel(maximumZoomLevel);

        if (zoomLevel() > maximumZoomLevel && (m_gestureArea->enabled() || !m_cameraCapabilities.overzoomEnabled()))
            setZoomLevel(maximumZoomLevel);

        if (oldMaximumZoomLevel != maximumZoomLevel)
            emit maximumZoomLevelChanged();
    }
}

/*!
    \qmlproperty real QtLocation::Map::maximumZoomLevel

    This property holds the maximum valid zoom level for the map.

    The maximum zoom level is defined by the \l plugin used.
    If the \l plugin property is not set or the plugin does not support mapping, this property is \c 30.
*/

qreal QDeclarativeGeoMap::maximumZoomLevel() const
{
    return m_gestureArea->maximumZoomLevel();
}

/*!
    \qmlproperty real QtLocation::Map::zoomLevel

    This property holds the zoom level for the map.

    Larger values for the zoom level provide more detail. Zoom levels
    are always non-negative. The default value is 8.0. Depending on the plugin in use,
    values outside the [minimumZoomLevel, maximumZoomLevel] range, which represent the range for which
    tiles are available, may be accepted, or clamped.
*/
void QDeclarativeGeoMap::setZoomLevel(qreal zoomLevel)
{
    return setZoomLevel(zoomLevel, m_cameraCapabilities.overzoomEnabled());
}

/*!
    \internal

    Sets the zoom level.
    Larger values for the zoom level provide more detail. Zoom levels
    are always non-negative. The default value is 8.0. Values outside the
    [minimumZoomLevel, maximumZoomLevel] range, which represent the range for which
    tiles are available, can be accepted or clamped by setting the overzoom argument
    to true or false respectively.
*/
void QDeclarativeGeoMap::setZoomLevel(qreal zoomLevel, bool overzoom)
{
    if (m_cameraData.zoomLevel() == zoomLevel || zoomLevel < 0)
        return;

    //small optimization to avoid double setCameraData
    bool centerHasChanged = false;

    if (m_initialized) {
        m_cameraData.setZoomLevel(qBound<qreal>(overzoom ? m_map->minimumZoom() : minimumZoomLevel(),
                                                zoomLevel,
                                                overzoom ? 30 : maximumZoomLevel()));
        m_maximumViewportLatitude = m_map->maximumCenterLatitudeAtZoom(m_cameraData);
        QGeoCoordinate coord = m_cameraData.center();
        coord.setLatitude(qBound(-m_maximumViewportLatitude, coord.latitude(), m_maximumViewportLatitude));
        if (coord != m_cameraData.center()) {
            centerHasChanged = true;
            m_cameraData.setCenter(coord);
        }
        m_map->setCameraData(m_cameraData);
    } else {
        m_cameraData.setZoomLevel(zoomLevel);
    }

    if (centerHasChanged)
        emit centerChanged(m_cameraData.center());
    emit zoomLevelChanged(m_cameraData.zoomLevel());
}

qreal QDeclarativeGeoMap::zoomLevel() const
{
    return m_cameraData.zoomLevel();
}

/*!
    \qmlproperty real QtLocation::Map::bearing

    This property holds the bearing for the map.
    The default value is 0.
    If the Plugin used for the Map supports bearing, the valid range for this value is between 0 and 360.
    If the Plugin used for the Map does not support bearing, changing this property will have no effect.

    \since Qt Location 5.9
*/
void QDeclarativeGeoMap::setBearing(qreal bearing)
{
    bearing = std::fmod(bearing, qreal(360.0));
    if (bearing < 0.0)
        bearing += 360.0;
    if (m_map && !m_cameraCapabilities.supportsBearing())
        bearing = 0.0;
    if (m_cameraData.bearing() == bearing || bearing < 0.0)
        return;

    m_cameraData.setBearing(bearing);
    if (m_map)
        m_map->setCameraData(m_cameraData);
    emit bearingChanged(bearing);
}

qreal QDeclarativeGeoMap::bearing() const
{
    return m_cameraData.bearing();
}

/*!
    \qmlproperty real QtLocation::Map::tilt

    This property holds the tilt for the map, in degrees.
    The default value is 0.
    The valid range for this value is [ minimumTilt, maximumTilt ].
    If the Plugin used for the Map does not support tilting, changing this property will have no effect.

    \sa minimumTilt, maximumTilt

    \since Qt Location 5.9
*/
void QDeclarativeGeoMap::setTilt(qreal tilt)
{
    tilt = qBound(minimumTilt(), tilt, maximumTilt());
    if (m_cameraData.tilt() == tilt)
        return;

    m_cameraData.setTilt(tilt);
    if (m_map)
        m_map->setCameraData(m_cameraData);
    emit tiltChanged(tilt);
}

qreal QDeclarativeGeoMap::tilt() const
{
    return m_cameraData.tilt();
}

void QDeclarativeGeoMap::setMinimumTilt(qreal minimumTilt, bool userSet)
{
    if (minimumTilt >= 0) {
        if (userSet)
            m_userMinimumTilt = minimumTilt;
        qreal oldMinimumTilt = this->minimumTilt();

        m_minimumTilt = qBound(m_cameraCapabilities.minimumTilt(),
                               minimumTilt,
                               m_cameraCapabilities.maximumTilt());

        if (tilt() < m_minimumTilt)
            setTilt(m_minimumTilt);

        if (oldMinimumTilt != m_minimumTilt)
            emit minimumTiltChanged(m_minimumTilt);
    }
}

/*!
    \qmlproperty real QtLocation::Map::fieldOfView

    This property holds the field of view of the camera used to look at the map, in degrees.
    If the plugin property of the map is not set, or the plugin does not support mapping, the value is 45 degrees.

    Note that changing this value implicitly changes also the distance between the camera and the map,
    so that, at a tilting angle of 0 degrees, the resulting image is identical for any value used for this property.

    For more information about this parameter, consult the Wikipedia articles about \l {https://en.wikipedia.org/wiki/Field_of_view} {Field of view} and
    \l {https://en.wikipedia.org/wiki/Angle_of_view} {Angle of view}.

    \sa minimumFieldOfView, maximumFieldOfView

    \since Qt Location 5.9
*/
void QDeclarativeGeoMap::setFieldOfView(qreal fieldOfView)
{
    fieldOfView = qBound(minimumFieldOfView(), fieldOfView, maximumFieldOfView());
    if (m_cameraData.fieldOfView() == fieldOfView)
        return;

    m_cameraData.setFieldOfView(fieldOfView);
    if (m_map)
        m_map->setCameraData(m_cameraData);
    emit fieldOfViewChanged(fieldOfView);
}

qreal QDeclarativeGeoMap::fieldOfView() const
{
    return m_cameraData.fieldOfView();
}

void QDeclarativeGeoMap::setMinimumFieldOfView(qreal minimumFieldOfView, bool userSet)
{
    if (minimumFieldOfView > 0 && minimumFieldOfView < 180.0) {
        if (userSet)
            m_userMinimumFieldOfView = minimumFieldOfView;
        qreal oldMinimumFoV = this->minimumFieldOfView();

        m_minimumFieldOfView = qBound(m_cameraCapabilities.minimumFieldOfView(),
                                      minimumFieldOfView,
                                      m_cameraCapabilities.maximumFieldOfView());

        if (fieldOfView() < m_minimumFieldOfView)
            setFieldOfView(m_minimumFieldOfView);

        if (oldMinimumFoV != m_minimumFieldOfView)
            emit minimumFieldOfViewChanged(m_minimumFieldOfView);
    }
}

/*!
    \qmlproperty bool QtLocation::Map::minimumFieldOfView

    This property holds the minimum valid field of view for the map, in degrees.

    The minimum tilt field of view by the \l plugin used is a lower bound for
    this property.
    If the \l plugin property is not set or the plugin does not support mapping, this property is \c 1.

    \sa fieldOfView, maximumFieldOfView

    \since Qt Location 5.9
*/
qreal QDeclarativeGeoMap::minimumFieldOfView() const
{
    return m_minimumFieldOfView;
}

void QDeclarativeGeoMap::setMaximumFieldOfView(qreal maximumFieldOfView, bool userSet)
{
    if (maximumFieldOfView > 0 && maximumFieldOfView < 180.0) {
        if (userSet)
            m_userMaximumFieldOfView = maximumFieldOfView;
        qreal oldMaximumFoV = this->maximumFieldOfView();

        m_maximumFieldOfView = qBound(m_cameraCapabilities.minimumFieldOfView(),
                                      maximumFieldOfView,
                                      m_cameraCapabilities.maximumFieldOfView());

        if (fieldOfView() > m_maximumFieldOfView)
            setFieldOfView(m_maximumFieldOfView);

        if (oldMaximumFoV != m_maximumFieldOfView)
            emit maximumFieldOfViewChanged(m_maximumFieldOfView);
    }
}

/*!
    \qmlproperty bool QtLocation::Map::maximumFieldOfView

    This property holds the maximum valid field of view for the map, in degrees.

    The minimum tilt field of view by the \l plugin used is an upper bound for
    this property.
    If the \l plugin property is not set or the plugin does not support mapping, this property is \c 179.

    \sa fieldOfView, minimumFieldOfView

    \since Qt Location 5.9
*/
qreal QDeclarativeGeoMap::maximumFieldOfView() const
{
    return m_maximumFieldOfView;
}

/*!
    \qmlproperty bool QtLocation::Map::minimumTilt

    This property holds the minimum valid tilt for the map, in degrees.

    The minimum tilt defined by the \l plugin used is a lower bound for
    this property.
    If the \l plugin property is not set or the plugin does not support mapping, this property is \c 0.

    \sa tilt, maximumTilt

    \since Qt Location 5.9
*/
qreal QDeclarativeGeoMap::minimumTilt() const
{
    return m_minimumTilt;
}

void QDeclarativeGeoMap::setMaximumTilt(qreal maximumTilt, bool userSet)
{
    if (maximumTilt >= 0) {
        if (userSet)
            m_userMaximumTilt = maximumTilt;
        qreal oldMaximumTilt = this->maximumTilt();

        m_maximumTilt = qBound(m_cameraCapabilities.minimumTilt(),
                               maximumTilt,
                               m_cameraCapabilities.maximumTilt());

        if (tilt() > m_maximumTilt)
            setTilt(m_maximumTilt);

        if (oldMaximumTilt != m_maximumTilt)
            emit maximumTiltChanged(m_maximumTilt);
    }
}

/*!
    \qmlproperty bool QtLocation::Map::maximumTilt

    This property holds the maximum valid tilt for the map, in degrees.

    The maximum tilt defined by the \l plugin used is an upper bound for
    this property.
    If the \l plugin property is not set or the plugin does not support mapping, this property is \c 89.5.

    \sa tilt, minimumTilt

    \since Qt Location 5.9
*/
qreal QDeclarativeGeoMap::maximumTilt() const
{
    return m_maximumTilt;
}

/*!
    \qmlproperty coordinate QtLocation::Map::center

    This property holds the coordinate which occupies the center of the
    mapping viewport. Invalid center coordinates are ignored.

    The default value is an arbitrary valid coordinate.
*/
void QDeclarativeGeoMap::setCenter(const QGeoCoordinate &center)
{
    if (center == m_cameraData.center())
        return;

    if (!center.isValid())
        return;

    if (m_initialized) {
        QGeoCoordinate coord(center);
        coord.setLatitude(qBound(-m_maximumViewportLatitude, center.latitude(), m_maximumViewportLatitude));
        m_cameraData.setCenter(coord);
        m_map->setCameraData(m_cameraData);
    } else {
        m_cameraData.setCenter(center);
    }

    emit centerChanged(m_cameraData.center());
}

QGeoCoordinate QDeclarativeGeoMap::center() const
{
    return m_cameraData.center();
}


/*!
    \qmlproperty geoshape QtLocation::Map::visibleRegion

    This property holds the region which occupies the viewport of
    the map. The camera is positioned in the center of the shape, and
    at the largest integral zoom level possible which allows the
    whole shape to be visible on the screen. This implies that
    reading this property back shortly after having been set the
    returned area is equal or larger than the set area.

    Setting this property implicitly changes the \l center and
    \l zoomLevel of the map. Any previously set value to those
    properties will be overridden.

    This property does not provide any change notifications.

    \since 5.6
*/
void QDeclarativeGeoMap::setVisibleRegion(const QGeoShape &shape)
{
    if (shape.boundingGeoRectangle() == visibleRegion())
        return;

    m_visibleRegion = shape.boundingGeoRectangle();
    if (!m_visibleRegion.isValid()
        || (m_visibleRegion.bottomRight().latitude() >= 85.0) // rect entirely outside web mercator
        || (m_visibleRegion.topLeft().latitude() <= -85.0)) {
        // shape invalidated -> nothing to fit anymore
        m_visibleRegion = QGeoRectangle();
        m_pendingFitViewport = false;
        return;
    }

    if (!m_map || !width() || !height()) {
        m_pendingFitViewport = true;
        return;
    }

    fitViewportToGeoShape();
}

QGeoShape QDeclarativeGeoMap::visibleRegion() const
{
    if (!m_map || !width() || !height())
        return m_visibleRegion;

    const QList<QDoubleVector2D> &visibleRegion = m_map->geoProjection().visibleRegion();
    QGeoPolygon poly;
    for (int i = 0; i < visibleRegion.size(); ++i) {
         const QDoubleVector2D &c = visibleRegion.at(i);
        // If a segment spans more than half of the map longitudinally, split in 2.
        if (i && qAbs(visibleRegion.at(i-1).x() - c.x()) >= 0.5) { // This assumes a segment is never >= 1.0 (whole map span)
            QDoubleVector2D extraPoint = (visibleRegion.at(i-1) + c) * 0.5;
            poly.addCoordinate(m_map->geoProjection().wrappedMapProjectionToGeo(extraPoint));
        }
        poly.addCoordinate(m_map->geoProjection().wrappedMapProjectionToGeo(c));
    }
    if (visibleRegion.size() >= 2 && qAbs(visibleRegion.last().x() - visibleRegion.first().x()) >= 0.5) {
        QDoubleVector2D extraPoint = (visibleRegion.last() + visibleRegion.first()) * 0.5;
        poly.addCoordinate(m_map->geoProjection().wrappedMapProjectionToGeo(extraPoint));
    }

    return poly;
}

/*!
    \qmlproperty bool QtLocation::Map::copyrightsVisible

    This property holds the visibility of the copyrights notice. The notice is usually
    displayed in the bottom left corner. By default, this property is set to \c true.

    \note Many map providers require the notice to be visible as part of the terms and conditions.
    Please consult the relevant provider documentation before turning this notice off.

    \since 5.7
*/
void QDeclarativeGeoMap::setCopyrightsVisible(bool visible)
{
    if (m_copyrightsVisible == visible)
        return;

    if (!m_copyrights.isNull())
        m_copyrights->setCopyrightsVisible(visible);

    m_copyrightsVisible = visible;
    emit copyrightsVisibleChanged(visible);
}

bool QDeclarativeGeoMap::copyrightsVisible() const
{
    return m_copyrightsVisible;
}



/*!
    \qmlproperty color QtLocation::Map::color

    This property holds the background color of the map element.

    \since 5.6
*/
void QDeclarativeGeoMap::setColor(const QColor &color)
{
    if (color != m_color) {
        m_color = color;
        update();
        emit colorChanged(m_color);
    }
}

QColor QDeclarativeGeoMap::color() const
{
    return m_color;
}

/*!
    \qmlproperty color QtLocation::Map::mapReady

    This property holds whether the map has been successfully initialized and is ready to be used.
    Some methods, such as \l fromCoordinate and \l toCoordinate, will not work before the map is ready.
    Due to the architecture of the \l Map, it's advised to use the signal emitted for this property
    in place of \l {QtQml::Component::completed()}{Component.onCompleted}, to make sure that everything behaves as expected.

    \since 5.9
*/
bool QDeclarativeGeoMap::mapReady() const
{
    return m_initialized;
}

// TODO: offer the possibility to specify the margins.
void QDeclarativeGeoMap::fitViewportToGeoShape()
{
    const int margins  = 10;
    if (!m_map  || !m_visibleRegion.isValid() || width() <= margins || height() <= margins)
        return;

    QDoubleVector2D topLeftPoint = m_map->geoProjection().geoToMapProjection(m_visibleRegion.topLeft());
    QDoubleVector2D bottomRightPoint = m_map->geoProjection().geoToMapProjection(m_visibleRegion.bottomRight());
    if (bottomRightPoint.x() < topLeftPoint.x()) // crossing the dateline
        bottomRightPoint.setX(bottomRightPoint.x() + 1.0);

    // find center of the bounding box
    QDoubleVector2D center = (topLeftPoint + bottomRightPoint) * 0.5;
    center.setX(center.x() > 1.0 ? center.x() - 1.0 : center.x());
    QGeoCoordinate centerCoordinate = m_map->geoProjection().mapProjectionToGeo(center);

    // position camera to the center of bounding box
    setProperty("center", QVariant::fromValue(centerCoordinate)); // not using setCenter(centerCoordinate) to honor a possible animation set on the center property

    // if the shape is empty we just change center position, not zoom
    double bboxWidth  = (bottomRightPoint.x() - topLeftPoint.x()) * m_map->mapWidth();
    double bboxHeight = (bottomRightPoint.y() - topLeftPoint.y()) * m_map->mapHeight();

    if (bboxHeight == 0.0 && bboxWidth == 0.0)
        return;

    double zoomRatio = qMax(bboxWidth / (width() - margins),
                            bboxHeight / (height() - margins));
    zoomRatio = std::log(zoomRatio) / std::log(2.0);
    double newZoom = qMax<double>(minimumZoomLevel(), zoomLevel() - zoomRatio);
    setProperty("zoomLevel", QVariant::fromValue(newZoom)); // not using setZoomLevel(newZoom)  to honor a possible animation set on the zoomLevel property
}


/*!
    \qmlproperty list<MapType> QtLocation::Map::supportedMapTypes

    This read-only property holds the set of \l{MapType}{map types} supported by this map.

    \sa activeMapType
*/
QQmlListProperty<QDeclarativeGeoMapType> QDeclarativeGeoMap::supportedMapTypes()
{
    return QQmlListProperty<QDeclarativeGeoMapType>(this, m_supportedMapTypes);
}

/*!
    \qmlmethod void QtLocation::Map::setBearing(real bearing, coordinate coordinate)

    Sets the bearing for the map to \a bearing, rotating it around \a coordinate.
    If the Plugin used for the Map supports bearing, the valid range for \a bearing is between 0 and 360.
    If the Plugin used for the Map does not support bearing, or if the map is tilted and \a coordinate happens
    to be behind the camera, or if the map is not ready (see \l mapReady), calling this method will have no effect.

    The release of this API with Qt 5.10 is a Technology Preview.

    \since 5.10
*/
void QDeclarativeGeoMap::setBearing(qreal bearing, const QGeoCoordinate &coordinate)
{
    if (!m_map)
        return;

    const QDoubleVector2D coordWrapped = m_map->geoProjection().geoToWrappedMapProjection(coordinate);
    if (!m_map->geoProjection().isProjectable(coordWrapped))
        return;

    const QPointF rotationPoint = m_map->geoProjection().wrappedMapProjectionToItemPosition(coordWrapped).toPointF();

    // First set bearing
    setBearing(bearing);
    // then reanchor
    setCenter(m_map->geoProjection().anchorCoordinateToPoint(coordinate, rotationPoint));
}

/*!
    \qmlmethod void QtLocation::Map::alignCoordinateToPoint(coordinate coordinate, QPointF point)

    Aligns \a coordinate to \a point.
    This method effectively extends the functionality offered by the \l center qml property, allowing
    to align a coordinate to point of the Map element other than its center.
    This is useful in those applications where the center of the scene (e.g., a cursor) is not to be
    placed exactly in the center of the map.

    If the map is tilted, and \a coordinate happens to be behind the camera, or if the map is not ready
    (see \l mapReady), calling this method will have no effect.

    The release of this API with Qt 5.10 is a Technology Preview.

    \sa center

    \since 5.10
*/
void QDeclarativeGeoMap::alignCoordinateToPoint(const QGeoCoordinate &coordinate, const QPointF &point)
{
    if (!m_map)
        return;

    setCenter(m_map->geoProjection().anchorCoordinateToPoint(coordinate, point));
}

/*!
    \qmlmethod coordinate QtLocation::Map::toCoordinate(QPointF position, bool clipToViewPort)

    Returns the coordinate which corresponds to the \a position relative to the map item.

    If \a cliptoViewPort is \c true, or not supplied then returns an invalid coordinate if
    \a position is not within the current viewport.
*/
QGeoCoordinate QDeclarativeGeoMap::toCoordinate(const QPointF &position, bool clipToViewPort) const
{
    if (m_map)
        return m_map->geoProjection().itemPositionToCoordinate(QDoubleVector2D(position), clipToViewPort);
    else
        return QGeoCoordinate();
}

/*!
    \qmlmethod point QtLocation::Map::fromCoordinate(coordinate coordinate, bool clipToViewPort)

    Returns the position relative to the map item which corresponds to the \a coordinate.

    If \a cliptoViewPort is \c true, or not supplied then returns an invalid QPointF if
    \a coordinate is not within the current viewport.
*/
QPointF QDeclarativeGeoMap::fromCoordinate(const QGeoCoordinate &coordinate, bool clipToViewPort) const
{
    if (m_map)
        return m_map->geoProjection().coordinateToItemPosition(coordinate, clipToViewPort).toPointF();
    else
        return QPointF(qQNaN(), qQNaN());
}

/*!
    \qmlmethod void QtLocation::Map::pan(int dx, int dy)

    Starts panning the map by \a dx pixels along the x-axis and
    by \a dy pixels along the y-axis.

    Positive values for \a dx move the map right, negative values left.
    Positive values for \a dy move the map down, negative values up.

    During panning the \l center, and \l zoomLevel may change.
*/
void QDeclarativeGeoMap::pan(int dx, int dy)
{
    if (!m_map)
        return;
    if (dx == 0 && dy == 0)
        return;

    QGeoCoordinate coord = m_map->geoProjection().itemPositionToCoordinate(
                                QDoubleVector2D(m_map->viewportWidth() / 2 + dx,
                                        m_map->viewportHeight() / 2 + dy));
    setCenter(coord);
}


/*!
    \qmlmethod void QtLocation::Map::prefetchData()

    Optional hint that allows the map to prefetch during this idle period
*/
void QDeclarativeGeoMap::prefetchData()
{
    if (!m_map)
        return;
    m_map->prefetchData();
}

/*!
    \qmlmethod void QtLocation::Map::clearData()

    Clears map data collected by the currently selected plugin.
    \note This method will delete cached files.
    \sa plugin
*/
void QDeclarativeGeoMap::clearData()
{
    m_map->clearData();
}

/*!
    \qmlproperty string QtLocation::Map::errorString

    This read-only property holds the textual presentation of the latest mapping provider error.
    If no error has occurred, an empty string is returned.

    An empty string may also be returned if an error occurred which has no associated
    textual representation.

    \sa QGeoServiceProvider::errorString()
*/

QString QDeclarativeGeoMap::errorString() const
{
    return m_errorString;
}

/*!
    \qmlproperty enumeration QtLocation::Map::error

    This read-only property holds the last occurred mapping service provider error.

    \list
    \li Map.NoError - No error has occurred.
    \li Map.NotSupportedError -The maps plugin property was not set or there is no mapping manager associated with the plugin.
    \li Map.UnknownParameterError -The plugin did not recognize one of the parameters it was given.
    \li Map.MissingRequiredParameterError - The plugin did not find one of the parameters it was expecting.
    \li Map.ConnectionError - The plugin could not connect to its backend service or database.
    \endlist

    \sa QGeoServiceProvider::Error
*/

QGeoServiceProvider::Error QDeclarativeGeoMap::error() const
{
    return m_error;
}

/*!
    \internal
*/
void QDeclarativeGeoMap::touchEvent(QTouchEvent *event)
{
    if (isInteractive()) {
        m_gestureArea->handleTouchEvent(event);
    } else {
        //ignore event so sythesized event is generated;
        QQuickItem::touchEvent(event);
    }
}

#if QT_CONFIG(wheelevent)
/*!
    \internal
*/
void QDeclarativeGeoMap::wheelEvent(QWheelEvent *event)
{
    if (isInteractive())
        m_gestureArea->handleWheelEvent(event);
    else
        QQuickItem::wheelEvent(event);

}
#endif

bool QDeclarativeGeoMap::isInteractive()
{
    return (m_gestureArea->enabled() && m_gestureArea->acceptedGestures()) || m_gestureArea->isActive();
}

/*!
    \internal
*/
bool QDeclarativeGeoMap::childMouseEventFilter(QQuickItem *item, QEvent *event)
{
    Q_UNUSED(item)
    if (!isVisible() || !isEnabled() || !isInteractive())
        return QQuickItem::childMouseEventFilter(item, event);

    switch (event->type()) {
    case QEvent::MouseButtonPress:
    case QEvent::MouseMove:
    case QEvent::MouseButtonRelease:
        return sendMouseEvent(static_cast<QMouseEvent *>(event));
    case QEvent::UngrabMouse: {
        QQuickWindow *win = window();
        if (!win) break;
        if (!win->mouseGrabberItem() ||
                (win->mouseGrabberItem() &&
                 win->mouseGrabberItem() != this)) {
            // child lost grab, we could even lost
            // some events if grab already belongs for example
            // in item in diffrent window , clear up states
            mouseUngrabEvent();
        }
        break;
    }
    case QEvent::TouchBegin:
    case QEvent::TouchUpdate:
    case QEvent::TouchEnd:
    case QEvent::TouchCancel:
        if (static_cast<QTouchEvent *>(event)->touchPoints().count() >= 2) {
            // 1 touch point = handle with MouseEvent (event is always synthesized)
            // let the synthesized mouse event grab the mouse,
            // note there is no mouse grabber at this point since
            // touch event comes first (see Qt::AA_SynthesizeMouseForUnhandledTouchEvents)
            return sendTouchEvent(static_cast<QTouchEvent *>(event));
        }
    default:
        break;
    }
    return QQuickItem::childMouseEventFilter(item, event);
}

/*!
    \qmlmethod void QtLocation::Map::addMapItem(MapItem item)

    Adds the given \a item to the Map (for example MapQuickItem, MapCircle). If the object
    already is on the Map, it will not be added again.

    As an example, consider the case where you have a MapCircle representing your current position:

    \snippet declarative/maps.qml QtQuick import
    \snippet declarative/maps.qml QtLocation import
    \codeline
    \snippet declarative/maps.qml Map addMapItem MapCircle at current position

    \note MapItemViews cannot be added with this method.

    \sa mapItems, removeMapItem, clearMapItems
*/

void QDeclarativeGeoMap::addMapItem(QDeclarativeGeoMapItemBase *item)
{
    if (!item || item->quickMap())
        return;
    // If the item comes from a MapItemGroup, do not reparent it.
    if (!qobject_cast<QDeclarativeGeoMapItemGroup *>(item->parentItem()))
        item->setParentItem(this);
    m_mapItems.append(item);
    if (m_map) {
        item->setMap(this, m_map);
        m_map->addMapItem(item);
    }
    emit mapItemsChanged();
}

/*!
    \qmlmethod void QtLocation::Map::addMapParameter(MapParameter parameter)

    Adds a MapParameter object to the map. The effect of this call is dependent
    on the combination of the content of the MapParameter and the type of
    underlying QGeoMap. If a MapParameter that is not supported by the underlying
    QGeoMap gets added, the call has no effect.

    The release of this API with Qt 5.9 is a Technology Preview.

    \sa MapParameter, removeMapParameter, mapParameters, clearMapParameters

    \since 5.9
*/
void QDeclarativeGeoMap::addMapParameter(QDeclarativeGeoMapParameter *parameter)
{
    if (!parameter->isComponentComplete()) {
        connect(parameter, &QDeclarativeGeoMapParameter::completed, this, &QDeclarativeGeoMap::addMapParameter);
        return;
    }

    disconnect(parameter);
    if (m_mapParameters.contains(parameter))
        return;
    parameter->setParent(this);
    m_mapParameters.append(parameter); // parameter now owned by QDeclarativeGeoMap
    if (m_map)
        m_map->addParameter(parameter);
}

/*!
    \qmlmethod void QtLocation::Map::removeMapParameter(MapParameter parameter)

    Removes the given MapParameter object from the map.

    The release of this API with Qt 5.9 is a Technology Preview.

    \sa MapParameter, addMapParameter, mapParameters, clearMapParameters

    \since 5.9
*/
void QDeclarativeGeoMap::removeMapParameter(QDeclarativeGeoMapParameter *parameter)
{
    if (!m_mapParameters.contains(parameter))
        return;
    if (m_map)
        m_map->removeParameter(parameter);
    m_mapParameters.removeOne(parameter);
}

/*!
    \qmlmethod void QtLocation::Map::clearMapParameters()

    Removes all map parameters from the map.

    The release of this API with Qt 5.9 is a Technology Preview.

    \sa MapParameter, mapParameters, addMapParameter, removeMapParameter, clearMapParameters

    \since 5.9
*/
void QDeclarativeGeoMap::clearMapParameters()
{
    if (m_map)
        m_map->clearParameters();
    m_mapParameters.clear();
}

/*!
    \qmlproperty list<MapParameters> QtLocation::Map::mapParameters

    Returns the list of all map parameters in no particular order.
    These items include map parameters that were declared statically as part of
    the type declaration, as well as dynamical map parameters (\l addMapParameter).

    The release of this API with Qt 5.9 is a Technology Preview.

    \sa MapParameter, addMapParameter, removeMapParameter, clearMapParameters

    \since 5.9
*/
QList<QObject *> QDeclarativeGeoMap::mapParameters()
{
    QList<QObject *> ret;
    for (QDeclarativeGeoMapParameter *p : qAsConst(m_mapParameters))
        ret << p;
    return ret;
}

/*!
    \qmlproperty list<MapItem> QtLocation::Map::mapItems

    Returns the list of all map items in no particular order.
    These items include items that were declared statically as part of
    the type declaration, as well as dynamical items (\l addMapItem,
    \l MapItemView).

    \sa addMapItem, removeMapItem, clearMapItems
*/

QList<QObject *> QDeclarativeGeoMap::mapItems()
{
    QList<QObject *> ret;
    foreach (const QPointer<QDeclarativeGeoMapItemBase> &ptr, m_mapItems) {
        if (ptr)
            ret << ptr.data();
    }
    return ret;
}

/*!
    \qmlmethod void QtLocation::Map::removeMapItem(MapItem item)

    Removes the given \a item from the Map (for example MapQuickItem, MapCircle). If
    the MapItem does not exist or was not previously added to the map, the
    method does nothing.

    \sa mapItems, addMapItem, clearMapItems
*/
void QDeclarativeGeoMap::removeMapItem(QDeclarativeGeoMapItemBase *ptr)
{
    if (!ptr || !m_map)
        return;
    m_map->removeMapItem(ptr);
    QPointer<QDeclarativeGeoMapItemBase> item(ptr);
    if (!m_mapItems.contains(item))
        return;
    if (item->parentItem() == this)
        item->setParentItem(0);
    item->setMap(0, 0);
    // these can be optimized for perf, as we already check the 'contains' above
    m_mapItems.removeOne(item);
    emit mapItemsChanged();
}

/*!
    \qmlmethod void QtLocation::Map::clearMapItems()

    Removes all items and item groups from the map.

    \sa mapItems, addMapItem, removeMapItem, addMapItemGroup, removeMapItemGroup
*/
void QDeclarativeGeoMap::clearMapItems()
{
    m_map->clearMapItems();
    if (m_mapItems.isEmpty())
        return;
    for (auto i : qAsConst(m_mapItems)) {
        if (i) {
            i->setMap(0, 0);
            if (i->parentItem() == this)
                i->setParentItem(0);
        }
    }
    m_mapItems.clear();
    m_mapItemGroups.clear();
    emit mapItemsChanged();
}

/*!
    \qmlmethod void QtLocation::Map::addMapItemGroup(MapItemGroup itemGroup)

    Adds the map items contained in the given \a itemGroup to the Map
    (for example MapQuickItem, MapCircle).

    \sa MapItemGroup, removeMapItemGroup

    \since 5.9
*/
void QDeclarativeGeoMap::addMapItemGroup(QDeclarativeGeoMapItemGroup *itemGroup)
{
    if (!itemGroup || itemGroup->quickMap()) // || Already added to some map
        return;

    itemGroup->setQuickMap(this);
    QPointer<QDeclarativeGeoMapItemGroup> g(itemGroup);
    m_mapItemGroups.append(g);
    const QList<QQuickItem *> quickKids = g->childItems();
    for (auto c: quickKids) {
        QDeclarativeGeoMapItemBase *mapItem = qobject_cast<QDeclarativeGeoMapItemBase *>(c);
        if (mapItem)
            addMapItem(mapItem);
    }
    itemGroup->setParentItem(this);
}

/*!
    \qmlmethod void QtLocation::Map::removeMapItemGroup(MapItemGroup itemGroup)

    Removes \a itemGroup and the items contained therein from the Map.

    \sa MapItemGroup, addMapItemGroup

    \since 5.9
*/
void QDeclarativeGeoMap::removeMapItemGroup(QDeclarativeGeoMapItemGroup *itemGroup)
{
    if (!itemGroup || itemGroup->quickMap() != this) // cant remove an itemGroup added to another map
        return;

    QPointer<QDeclarativeGeoMapItemGroup> g(itemGroup);
    if (!m_mapItemGroups.removeOne(g))
        return;

    const QList<QQuickItem *> quickKids = itemGroup->childItems();
    for (auto c: quickKids) {
        QDeclarativeGeoMapItemBase *mapItem = qobject_cast<QDeclarativeGeoMapItemBase *>(c);
        if (mapItem)
            removeMapItem(mapItem);
    }
    itemGroup->setQuickMap(nullptr);
    itemGroup->setParentItem(0);
}

/*!
    \qmlmethod void QtLocation::Map::removeMapItemView(MapItemView itemView)

    Removes \a itemView and the items instantiated by it from the Map.

    \sa MapItemView, addMapItemView

    \since 5.10
*/
void QDeclarativeGeoMap::removeMapItemView(QDeclarativeGeoMapItemView *itemView)
{
    if (!itemView || itemView->map_ != this) // can't remove a view that is already added to another map
        return;

    itemView->removeInstantiatedItems();
    itemView->map_ = 0;
    // it can be removed from the list at this point, since no operations that require a Map have to be done
    // anymore on destruction.
    m_mapViews.removeOne(itemView);
}

/*!
    \qmlmethod void QtLocation::Map::addMapItemView(MapItemView itemView)

    Adds \a itemView to the Map.

    \sa MapItemView, removeMapItemView

    \since 5.10
*/
void QDeclarativeGeoMap::addMapItemView(QDeclarativeGeoMapItemView *itemView)
{
    if (!itemView || itemView->map_) // can't add a view twice
        return;

    // Not appending it to m_mapViews because it seems unnecessary even if the
    // itemView is a child of this (in which case it would be destroyed
    m_mapViews.append(itemView);
    setupMapView(itemView);
}

/*!
    \qmlproperty MapType QtLocation::Map::activeMapType

    \brief Access to the currently active \l{MapType}{map type}.

    This property can be set to change the active \l{MapType}{map type}.
    See the \l{Map::supportedMapTypes}{supportedMapTypes} property for possible values.

    \sa MapType
*/
void QDeclarativeGeoMap::setActiveMapType(QDeclarativeGeoMapType *mapType)
{
    if (m_activeMapType->mapType() != mapType->mapType()) {
        if (m_map) {
            if (mapType->mapType().pluginName() == m_plugin->name().toLatin1()) {
                m_map->setActiveMapType(mapType->mapType());
                m_activeMapType = mapType;
                emit activeMapTypeChanged();
            }
        } else {
            m_activeMapType = mapType;
            emit activeMapTypeChanged();
        }
    }
}

QDeclarativeGeoMapType * QDeclarativeGeoMap::activeMapType() const
{
    return m_activeMapType;
}

/*!
    \internal
*/
void QDeclarativeGeoMap::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry)
{
    m_gestureArea->setSize(newGeometry.size());
    QQuickItem::geometryChanged(newGeometry, oldGeometry);

    if (!m_map || newGeometry.size().isEmpty())
        return;

    m_map->setViewportSize(newGeometry.size().toSize());

    if (!m_initialized) {
        initialize();
    } else {
        setMinimumZoomLevel(m_map->minimumZoom(), false);

        // Update the center latitudinal threshold
        double maximumCenterLatitudeAtZoom = m_map->maximumCenterLatitudeAtZoom(m_cameraData);
        if (maximumCenterLatitudeAtZoom != m_maximumViewportLatitude) {
            m_maximumViewportLatitude = maximumCenterLatitudeAtZoom;
            QGeoCoordinate coord = m_cameraData.center();
            coord.setLatitude(qBound(-m_maximumViewportLatitude, coord.latitude(), m_maximumViewportLatitude));

            if (coord != m_cameraData.center()) {
                m_cameraData.setCenter(coord);
                m_map->setCameraData(m_cameraData);
                emit centerChanged(m_cameraData.center());
            }
        }
    }

    /*!
        The fitViewportTo*() functions depend on a valid map geometry.
        If they were called prior to the first resize they cause
        the zoomlevel to jump to 0 (showing the world). Therefore the
        calls were queued up until now.

        Multiple fitViewportTo*() calls replace each other.
     */
    if (m_pendingFitViewport && width() && height()) {
        fitViewportToGeoShape();
        m_pendingFitViewport = false;
    }

}

/*!
    \qmlmethod void QtLocation::Map::fitViewportToMapItems()

    Fits the current viewport to the boundary of all map items. The camera is positioned
    in the center of the map items, and at the largest integral zoom level possible which
    allows all map items to be visible on screen.

    \sa fitViewportToVisibleMapItems
*/
void QDeclarativeGeoMap::fitViewportToMapItems()
{
    fitViewportToMapItemsRefine(true, false);
}

/*!
    \qmlmethod void QtLocation::Map::fitViewportToVisibleMapItems()

    Fits the current viewport to the boundary of all \b visible map items.
    The camera is positioned in the center of the map items, and at the largest integral
    zoom level possible which allows all map items to be visible on screen.

    \sa fitViewportToMapItems
*/
void QDeclarativeGeoMap::fitViewportToVisibleMapItems()
{
    fitViewportToMapItemsRefine(true, true);
}

/*!
    \internal
*/
void QDeclarativeGeoMap::fitViewportToMapItemsRefine(bool refine, bool onlyVisible)
{
    if (!m_map)
        return;

    if (m_mapItems.size() == 0)
        return;

    double minX = 0;
    double maxX = 0;
    double minY = 0;
    double maxY = 0;
    double topLeftX = 0;
    double topLeftY = 0;
    double bottomRightX = 0;
    double bottomRightY = 0;
    bool haveQuickItem = false;

    // find bounds of all map items
    int itemCount = 0;
    for (int i = 0; i < m_mapItems.count(); ++i) {
        if (!m_mapItems.at(i))
            continue;
        QDeclarativeGeoMapItemBase *item = m_mapItems.at(i).data();
        if (!item || (onlyVisible && (!item->isVisible() || item->mapItemOpacity() <= 0.0)))
            continue;

        // skip quick items in the first pass and refine the fit later
        if (refine) {
            QDeclarativeGeoMapQuickItem *quickItem =
                    qobject_cast<QDeclarativeGeoMapQuickItem*>(item);
            if (quickItem) {
                haveQuickItem = true;
                continue;
            }
        }
        // Force map items to update immediately. Needed to ensure correct item size and positions
        // when recursively calling this function.
        // TODO: See if we really need updatePolish on delegated items, in particular
        // in relation to
        // a) fitViewportToMapItems
        // b) presence of MouseArea
        if (item->isPolishScheduled())
           item->updatePolish();

        topLeftX = item->position().x();
        topLeftY = item->position().y();
        bottomRightX = topLeftX + item->width();
        bottomRightY = topLeftY + item->height();

        if (itemCount == 0) {
            minX = topLeftX;
            maxX = bottomRightX;
            minY = topLeftY;
            maxY = bottomRightY;
        } else {
            minX = qMin(minX, topLeftX);
            maxX = qMax(maxX, bottomRightX);
            minY = qMin(minY, topLeftY);
            maxY = qMax(maxY, bottomRightY);
        }
        ++itemCount;
    }

    if (itemCount == 0) {
        if (haveQuickItem)
            fitViewportToMapItemsRefine(false, onlyVisible);
        return;
    }
    double bboxWidth = maxX - minX;
    double bboxHeight = maxY - minY;
    double bboxCenterX = minX + (bboxWidth / 2.0);
    double bboxCenterY = minY + (bboxHeight / 2.0);

    // position camera to the center of bounding box
    QGeoCoordinate coordinate;
    coordinate = m_map->geoProjection().itemPositionToCoordinate(QDoubleVector2D(bboxCenterX, bboxCenterY), false);
    setProperty("center", QVariant::fromValue(coordinate));

    // adjust zoom
    double bboxWidthRatio = bboxWidth / (bboxWidth + bboxHeight);
    double mapWidthRatio = width() / (width() + height());
    double zoomRatio;

    if (bboxWidthRatio > mapWidthRatio)
        zoomRatio = bboxWidth / width();
    else
        zoomRatio = bboxHeight / height();

    qreal newZoom = std::log10(zoomRatio) / std::log10(0.5);
    newZoom = std::floor(qMax(minimumZoomLevel(), (zoomLevel() + newZoom)));
    setProperty("zoomLevel", QVariant::fromValue(newZoom));

    // as map quick items retain the same screen size after the camera zooms in/out
    // we refine the viewport again to achieve better results
    if (refine)
        fitViewportToMapItemsRefine(false, onlyVisible);
}

bool QDeclarativeGeoMap::sendMouseEvent(QMouseEvent *event)
{
    QPointF localPos = mapFromScene(event->windowPos());
    QQuickWindow *win = window();
    QQuickItem *grabber = win ? win->mouseGrabberItem() : 0;
    bool stealEvent = m_gestureArea->isActive();

    if ((stealEvent || contains(localPos)) && (!grabber || (!grabber->keepMouseGrab() && !grabber->keepTouchGrab()))) {
        QScopedPointer<QMouseEvent> mouseEvent(QQuickWindowPrivate::cloneMouseEvent(event, &localPos));
        mouseEvent->setAccepted(false);

        switch (mouseEvent->type()) {
        case QEvent::MouseMove:
            m_gestureArea->handleMouseMoveEvent(mouseEvent.data());
            break;
        case QEvent::MouseButtonPress:
            m_gestureArea->handleMousePressEvent(mouseEvent.data());
            break;
        case QEvent::MouseButtonRelease:
            m_gestureArea->handleMouseReleaseEvent(mouseEvent.data());
            break;
        default:
            break;
        }

        stealEvent = m_gestureArea->isActive();
        grabber = win ? win->mouseGrabberItem() : 0;

        if (grabber && stealEvent && !grabber->keepMouseGrab() && !grabber->keepTouchGrab() && grabber != this)
            grabMouse();

        if (stealEvent) {
            //do not deliver
            event->setAccepted(true);
            return true;
        } else {
            return false;
        }
    }

    return false;
}

bool QDeclarativeGeoMap::sendTouchEvent(QTouchEvent *event)
{
    QQuickPointerDevice *touchDevice = QQuickPointerDevice::touchDevice(event->device());
    const QTouchEvent::TouchPoint &point = event->touchPoints().first();
    QQuickWindowPrivate *windowPriv = QQuickWindowPrivate::get(window());

    auto touchPointGrabberItem = [touchDevice, windowPriv](const QTouchEvent::TouchPoint &point) -> QQuickItem* {
        if (QQuickEventPoint *eventPointer = windowPriv->pointerEventInstance(touchDevice)->pointById(point.id()))
            return eventPointer->grabber();
        return nullptr;
    };

    QQuickItem *grabber = touchPointGrabberItem(point);

    bool stealEvent = m_gestureArea->isActive();
    bool containsPoint = contains(mapFromScene(point.scenePos()));

    if ((stealEvent || containsPoint) && (!grabber || !grabber->keepTouchGrab())) {
        QScopedPointer<QTouchEvent> touchEvent(new QTouchEvent(event->type(), event->device(), event->modifiers(), event->touchPointStates(), event->touchPoints()));
        touchEvent->setTimestamp(event->timestamp());
        touchEvent->setAccepted(false);

        m_gestureArea->handleTouchEvent(touchEvent.data());
        stealEvent = m_gestureArea->isActive();
        grabber = touchPointGrabberItem(point);

        if (grabber && stealEvent && !grabber->keepTouchGrab() && grabber != this) {
            QVector<int> ids;
            foreach (const QTouchEvent::TouchPoint &tp, event->touchPoints()) {
                if (!(tp.state() & Qt::TouchPointReleased)) {
                    ids.append(tp.id());
                }
            }
            grabTouchPoints(ids);
        }

        if (stealEvent) {
            //do not deliver
            event->setAccepted(true);
            return true;
        } else {
            return false;
        }
    }

    return false;
}

QT_END_NAMESPACE