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
|
// Copyright (C) 2024 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QtGraphs/qpieseries.h>
#include <private/qpieseries_p.h>
#include <QtGraphs/qpieslice.h>
#include <private/qpieslice_p.h>
#include <private/qgraphsview_p.h>
QT_BEGIN_NAMESPACE
/*!
\class QPieSeries
\inmodule QtGraphs
\ingroup graphs_2D
\brief The QPieSeries class presents data in pie graphs.
A pie series consists of slices that are defined as QPieSlice objects.
The slices can have any values as the QPieSeries object calculates
the percentage of a slice compared with the sum of all slices in the series
to determine the actual size of the slice in the graph.
Pie size and position on the graph are controlled by using relative values
that range from 0.0 to 1.0.
These relate to the actual graph rectangle.
By default, the pie is defined as a full pie. A partial pie can be created
by setting a starting angle and angle span for the series.
A full pie is 360 degrees, where 0 is at 12 a'clock.
\sa QPieSlice
*/
/*!
\qmltype PieSeries
\nativetype QPieSeries
\inqmlmodule QtGraphs
\ingroup graphs_qml_2D
\inherits AbstractSeries
\brief Presents data in pie graphs.
A pie series consists of slices that are defined using the PieSlice type.
The slices can have any values as the PieSeries type calculates
the percentage of a slice compared with the sum of all slices in the series
to determine the actual size of the slice in the graph.
Pie size and position on the graph are controlled by using relative values
that range from 0.0 to 1.0.
These relate to the actual graph rectangle.
By default, the pie is defined as a full pie. A partial pie can be created
by setting a starting angle and angle span for the series.
A full pie is 360 degrees, where 0 is at 12 o'clock.
The following QML example shows how to create a simple pie graph.
\qml
import QtQuick
import QtGraphs
Item {
id: mainView
width: 1280
height: 720
GraphsView {
anchors.fill: parent
theme: GraphsTheme {
colorScheme: GraphsTheme.ColorScheme.Dark
theme: GraphsTheme.Theme.QtGreen
}
PieSeries {
id: pieSeries
PieSlice {
value: 1
}
PieSlice {
value: 2
}
}
}
}
\endqml
\sa PieSlice, GraphsView
*/
/*!
\property QPieSeries::horizontalPosition
\brief The horizontal position of the pie.
The value is relative to the graph rectangle, so that:
\list
\li 0.0 is the absolute left.
\li 1.0 is the absolute right.
\endlist
The default value is 0.5 (center).
\sa verticalPosition
*/
/*!
\qmlproperty real PieSeries::horizontalPosition
The horizontal position of the pie.
The value is relative to the graph rectangle, so that:
\list
\li 0.0 is the absolute left.
\li 1.0 is the absolute right.
\endlist
The default value is 0.5 (center).
\sa verticalPosition
*/
/*!
\qmlsignal PieSeries::horizontalPositionChanged()
This signal is emitted when the horizontal position changes.
\sa horizontalPosition
*/
/*!
\property QPieSeries::verticalPosition
\brief The vertical position of the pie.
The value is relative to the graph rectangle, so that:
\list
\li 0.0 is the absolute top.
\li 1.0 is the absolute bottom.
\endlist
The default value is 0.5 (center).
\sa horizontalPosition
*/
/*!
\qmlproperty real PieSeries::verticalPosition
The vertical position of the pie.
The value is relative to the graph rectangle, so that:
\list
\li 0.0 is the absolute top.
\li 1.0 is the absolute bottom.
\endlist
The default value is 0.5 (center).
\sa horizontalPosition
*/
/*!
\qmlsignal PieSeries::verticalPositionChanged()
This signal is emitted when the vertical position changes.
\sa verticalPosition
*/
/*!
\property QPieSeries::pieSize
\brief The pie size.
The value is relative to the graph rectangle, so that:
\list
\li 0.0 is the minimum pieSize (pie not drawn).
\li 1.0 is the maximum pieSize that can fit the graph.
\endlist
When setting this property, the holeSize property is adjusted if necessary,
to ensure that the hole size is not greater than the pie size.
The default value is 0.7.
*/
/*!
\qmlproperty real PieSeries::pieSize
The pie size.
The value is relative to the graph rectangle, so that:
\list
\li 0.0 is the minimum pieSize (pie not drawn).
\li 1.0 is the maximum pieSize that can fit the graph.
\endlist
When setting this property, the holeSize property is adjusted if necessary,
to ensure that the hole size is not greater than the pie size.
The default value is 0.7.
*/
/*!
\qmlsignal PieSeries::pieSizeChanged()
This signal is emitted when the pie size changes.
\sa pieSize
*/
/*!
\property QPieSeries::holeSize
\brief The donut hole size.
When setting the \l pieSize property, this property is adjusted if necessary,
to ensure that the hole size is not greater than the pie size.
The default value is 0.0.
*/
/*!
\qmlproperty real PieSeries::holeSize
The donut hole size.
When setting the \l pieSize property, this property is adjusted if necessary,
to ensure that the hole size is not greater than the pie size.
The default value is 0.0.
*/
/*!
\qmlsignal PieSeries::holeSizeChanged()
This signal is emitted when the donut hole size changes.
\sa holeSize
*/
/*!
\property QPieSeries::startAngle
\brief The starting angle of the pie.
A full pie is 360 degrees, where 0 degrees is at 12 o'clock.
The default value is 0.
*/
/*!
\qmlproperty real PieSeries::startAngle
The starting angle of the pie.
A full pie is 360 degrees, where 0 degrees is at 12 o'clock.
The default value is 0.
*/
/*!
\qmlsignal PieSeries::startAngleChanged()
This signal is emitted when the pie start angle changes.
\sa startAngle
*/
/*!
\property QPieSeries::endAngle
\brief The ending angle of the pie.
A full pie is 360 degrees, where 0 degrees is at 12 o'clock.
The default value is 360.
*/
/*!
\qmlproperty real PieSeries::endAngle
The ending angle of the pie.
A full pie is 360 degrees, where 0 degrees is at 12 o'clock.
The default value is 360.
*/
/*!
\qmlsignal PieSeries::endAngleChanged()
This signal is emitted when the pie end angle changes.
\sa endAngle
*/
/*!
\property QPieSeries::count
\brief The number of slices in the series.
*/
/*!
\qmlproperty int PieSeries::count
The number of slices in the series.
*/
/*!
\qmlsignal PieSeries::countChanged()
This signal is emitted when the slice count changes.
\sa count
*/
/*!
\property QPieSeries::sum
\brief The sum of all slices.
The series keeps track of the sum of all the slices it holds.
*/
/*!
\qmlproperty real PieSeries::sum
The sum of all slices.
The series keeps track of the sum of all the slices it holds.
*/
/*!
\property QPieSeries::angleSpanVisibleLimit
\since 6.10
\brief The angle span limit for label visibility.
The angle span that will be used as the visibility limit for a slice label. A slice with
angle span under this value will change its visibility based on the \l angleSpanVisibleMode
set to the series. The default value is \c {0}, which means no slices will be hidden
regardless of the \l {angleSpanVisibleMode}.
\sa QPieSeries::angleSpanVisibleMode
*/
/*!
\qmlproperty real PieSeries::angleSpanVisibleLimit
\since 6.10
The angle span limit for label visibility.
The angle span that will be used as the visibility limit for a slice label. A slice with
angle span under this value will change its visibility based on the \l angleSpanVisibleMode
set to the series. The default value is \c {0}, which means no slices will be hidden
regardless of the \l {angleSpanVisibleMode}.
\sa angleSpanVisibleMode
*/
/*!
\property QPieSeries::angleSpanVisibleMode
\since 6.10
\brief The mode for label visibility.
The mode which determines which labels will be hidden if they are under the angle span limit
set with \l {angleSpanVisibleLimit}. Has no effect if \l angleSpanVisibleLimit has not been
set.
\sa QPieSeries::angleSpanVisibleLimit
*/
/*!
\qmlproperty enumeration PieSeries::angleSpanVisibleMode
\since 6.10
The mode for label visibility.
The mode which determines which labels will be hidden if they are under the angle span limit
set with \l {angleSpanVisibleLimit}. Has no effect if \l angleSpanVisibleLimit has not been
set.
\value PieSeries.VisibleMode.None
All of the labels of slices with smaller angle span than the \l angleSpanVisibleLimit
will be hidden.
\value PieSeries.VisibleMode.First
All except the first label of consecutive slices with smaller angle span than
the \l angleSpanVisibleLimit will be hidden. This is the default value.
\value PieSeries.VisibleMode.Even
Every other label of consecutive slices with smaller angle span than
the \l angleSpanVisibleLimit will be hidden, starting from the second one.
\value PieSeries.VisibleMode.Odd
Every other label of consecutive slices with smaller angle span than
the \l angleSpanVisibleLimit will be hidden, starting from the first one.
\sa angleSpanVisibleLimit
*/
/*!
\enum QPieSeries::VisibleMode
\since 6.10
The mode for label visibility.
\value None
All of the labels of slices with smaller angle span than the \l angleSpanVisibleLimit
will be hidden.
\value First
All except the first label of consecutive slices with smaller angle span than
the \l angleSpanVisibleLimit will be hidden. This is the default value.
\value Even
Every other label of consecutive slices with smaller angle span than
the \l angleSpanVisibleLimit will be hidden, starting from the second one.
\value Odd
Every other label of consecutive slices with smaller angle span than
the \l angleSpanVisibleLimit will be hidden, starting from the first one.
\sa QPieSeries::angleSpanVisibleLimit
*/
/*!
\qmlsignal PieSeries::sumChanged()
This signal is emitted when the sum of all slices changes.
\sa sum
*/
/*!
\fn void QPieSeries::added(const QList<QPieSlice *> &slices)
This signal is emitted when the slices specified by \a slices are added to the series.
\sa append()
*/
/*!
\qmlsignal PieSeries::added(list<PieSlice> slices)
This signal is emitted when the slices specified by \a slices are added to the series.
*/
/*!
\fn void QPieSeries::removed(const QList<QPieSlice *> &slices)
This signal is emitted when the slices specified by \a slices are removed from the series.
\sa remove()
*/
/*!
\qmlsignal PieSeries::removed(list<PieSlice> slices)
This signal is emitted when the slices specified by \a slices are removed from the series.
*/
/*!
\qmlmethod PieSlice PieSeries::at(int index)
Returns the slice at the position specified by \a index. Returns null if the
index is not valid.
*/
/*!
\qmlmethod PieSlice PieSeries::find(string label)
Returns the first slice that has the label \a label. Returns null if the label
is not found.
*/
/*!
\qmlmethod PieSlice PieSeries::append(string label, real value)
Adds a new slice with the label \a label and the value \a value to the pie.
*/
/*!
\qmlmethod bool PieSeries::remove(PieSlice slice)
Removes the slice specified by \a slice from the pie. Returns \c true if the
removal was successful, \c false otherwise.
*/
/*!
\qmlmethod bool PieSeries::replace(int index, PieSlice slice)
Replaces the slice specified by \a slice from the pie at \a index. Returns \c true if the
replace was successful, \c false otherwise.
*/
/*!
\qmlmethod PieSeries::clear()
Removes all slices from the pie.
*/
/*!
\qmlmethod void PieSeries::removeMultiple(int index, int count)
Removes a range of slices as specified by the \a index and \a count. The call
traverses over all slices even if removal of one fails.
*/
/*!
\qmlmethod bool PieSeries::remove(int index)
Removes the slice specified by \a index from the pie. Returns \c true if the
removal was successful, \c false otherwise.
*/
/*!
\qmlmethod bool PieSeries::replace(PieSlice oldSlice, PieSlice newSlice)
Replaces the slice specified by \a oldSlice with newSlice. Returns \c true if the
removal was successful, \c false otherwise. \a oldSlice is destroyed if this
is successful.
*/
/*!
\qmlmethod bool PieSeries::replace(list<PieSlice> slices)
Completely replaces all current slices with \a slices. The size does not need
to match. Returns false if any of the PieSlice in \a slices is invalid.
*/
/*!
\qmlmethod bool PieSeries::take(PieSlice slice)
Takes a single slice, specified by \a slice, from the series. Does not delete
the slice object. Returns \c true if successful.
*/
/*!
\qmlsignal PieSeries::clicked(PieSlice slice)
This signal is emitted when the \a slice is clicked or tapped.
*/
/*!
\qmlsignal PieSeries::doubleClicked(PieSlice slice)
This signal is emitted when the \a slice is double-clicked or double-tapped.
This signal always occurs after \l clicked.
*/
/*!
\qmlsignal PieSeries::pressed(PieSlice slice)
This signal is emitted when the user clicks or taps the \a slice
and holds down the mouse button or gesture.
*/
/*!
\qmlsignal PieSeries::released(PieSlice slice)
This signal is emitted when the user releases a previously pressed mouse button
or gesture on the \a slice.
*/
/*!
\qmlsignal PieSeries::angleSpanVisibleLimitChanged()
\since 6.10
This signal is emitted when the angle span limit has been changed.
*/
/*!
\qmlsignal PieSeries::angleSpanVisibleModeChanged()
\since 6.10
This signal is emitted when the angle span limit visible mode has been changed.
*/
/*!
Constructs a series object that is a child of \a parent.
*/
QPieSeries::QPieSeries(QObject *parent)
: QAbstractSeries(*(new QPieSeriesPrivate()), parent)
{}
QPieSeries::~QPieSeries() {}
/*!
\reimp
Returns the type of the series.
*/
QAbstractSeries::SeriesType QPieSeries::type() const
{
return QAbstractSeries::SeriesType::Pie;
}
/*!
Returns the PieSlice at the position \a index. Returns null if no PieSlice was found.
*/
QPieSlice *QPieSeries::at(qsizetype index)
{
QList<QPieSlice *> sliceList = slices();
if (index >= 0 && index < sliceList.size())
return sliceList[index];
return 0;
}
/*!
Searches for a PieSlice which contains the label \a label. Returns the PieSlice if found, null otherwise.
*/
QPieSlice *QPieSeries::find(const QString &label)
{
for (QPieSlice *slice : slices()) {
if (slice->label() == label)
return slice;
}
return 0;
}
/*!
Replaces the PieSlice at position \a index with the one specified by \a slice.
The original PieSlice will be permanently deleted. Returns \c false if replacing
any of the PieSlices fails.
*/
bool QPieSeries::replace(qsizetype index, QPieSlice *slice)
{
Q_D(QPieSeries);
if (index < 0)
index = 0;
if (!slice || d->m_slices.contains(slice))
return false;
if (slice->series()) // already added to some series
return false;
if (qIsNaN(slice->value()) || qIsInf(slice->value()))
return false;
if (d->m_slices.size() <= index)
return false;
emit removed(QList<QPieSlice *>() << d->m_slices[index]);
delete d->m_slices[index];
slice->setParent(this);
slice->d_func()->m_series = this;
d->m_slices[index] = slice;
d->updateData();
QObject::connect(slice, SIGNAL(sliceChanged()), this, SLOT(handleSliceChange()));
emit replaced(QList<QPieSlice *>() << slice);
return true;
}
/*!
Removes multiple PieSlices from the series starting from \a index to a number of \a count.
The PieSlices will be permanently deleted.
*/
void QPieSeries::removeMultiple(qsizetype index, int count)
{
Q_D(QPieSeries);
if (index < 0 || count < 1 || index + count > d->m_slices.size())
return;
QList<QPieSlice *> removedList;
for (qsizetype i = index; i < index + count; ++i) {
auto slice = d->m_slices[index];
d->m_slices.removeOne(slice);
d->updateData();
removedList << slice;
}
emit removed(removedList);
for (auto slice : std::as_const(removedList)) {
delete slice;
}
emit countChanged();
}
/*!
Removes the PieSlice at the location \a index. The PieSlice will be permanently deleted.
Returns \c true if removing is successful.
*/
bool QPieSeries::remove(qsizetype index)
{
Q_D(QPieSeries);
if (index >= d->m_slices.size())
return false;
if (index < 0)
return false;
return remove(d->m_slices[index]);
}
/*!
Replaces the PieSlice \a oldSlice with \a newSlice if found in the series.\a oldSlice will
be permanently deleted. Returns \c true if replacing is successful.
*/
bool QPieSeries::replace(QPieSlice *oldSlice, QPieSlice *newSlice)
{
Q_D(QPieSeries);
if (!oldSlice || !newSlice)
return false;
if (oldSlice == newSlice)
return false;
if (d->m_slices.contains(newSlice))
return false;
if (newSlice->series())
return false;
if (qIsNaN(newSlice->value()) || qIsInf(newSlice->value()))
return false;
for (int i = 0; i < d->m_slices.size(); ++i) {
if (d->m_slices[i] == oldSlice) {
emit removed(QList<QPieSlice *>() << d->m_slices[i]);
delete d->m_slices[i];
newSlice->setParent(this);
newSlice->d_func()->m_series = this;
d->m_slices[i] = newSlice;
d->updateData();
QObject::connect(newSlice, SIGNAL(sliceChanged()), this, SLOT(handleSliceChange()));
emit replaced(QList<QPieSlice *>() << newSlice);
return true;
}
}
return false;
}
/*!
Replaces the entire list of PieSlices in the series with the list specified by \a slices.
All the original PieSlices will be permanently deleted. Returns \c true if all PieSlices are
replaced successfully.
*/
bool QPieSeries::replace(const QList<QPieSlice *> &slices)
{
Q_D(QPieSeries);
for (const auto slice : slices) {
if (!slice || d->m_slices.contains(slice))
return false;
if (slice->series())
return false;
if (qIsNaN(slice->value()) || qIsInf(slice->value()))
return false;
}
emit removed(d->m_slices);
for (auto &slice : d->m_slices) {
delete slice;
slice = nullptr;
}
for (auto &slice : slices) {
slice->setParent(this);
slice->d_func()->m_series = this;
QObject::connect(slice, SIGNAL(sliceChanged()), this, SLOT(handleSliceChange()));
}
d->m_slices = slices;
emit replaced(slices);
return true;
}
/*!
Appends the slice specified by \a slice to the series.
Slice ownership is passed to the series.
Returns \c true if appending succeeds.
*/
bool QPieSeries::append(QPieSlice *slice)
{
return append(QList<QPieSlice *>() << slice);
}
/*!
Appends the array of slices specified by \a slices to the series.
Slice ownership is passed to the series.
Returns \c true if appending succeeds.
*/
bool QPieSeries::append(const QList<QPieSlice *> &slices)
{
Q_D(QPieSeries);
if (slices.size() == 0)
return false;
for (auto *s : slices) {
if (!s || d->m_slices.contains(s))
return false;
if (s->series()) // already added to some series
return false;
if (qIsNaN(s->value()) || qIsInf(s->value()))
return false;
}
for (auto *s : slices) {
s->setParent(this);
s->d_func()->m_series = this;
d->m_slices << s;
}
d->updateData();
for (auto *s : slices)
QObject::connect(s, SIGNAL(sliceChanged()), this, SLOT(handleSliceChange()));
emit added(slices);
emit countChanged();
return true;
}
/*!
Appends the slice specified by \a slice to the series and returns a reference to the series.
Slice ownership is passed to the series.
*/
QPieSeries &QPieSeries::operator << (QPieSlice *slice)
{
append(slice);
return *this;
}
/*!
Appends a single slice with the specified \a value and \a label to the series.
Slice ownership is passed to the series.
Returns null if \a value is \c NaN, \c Inf, or \c -Inf and adds nothing to the
series.
*/
QPieSlice *QPieSeries::append(const QString &label, qreal value)
{
if (!(qIsNaN(value) || qIsInf(value))) {
QPieSlice *slice = new QPieSlice(label, value);
append(slice);
return slice;
} else {
return nullptr;
}
}
/*!
Inserts the slice specified by \a slice to the series before the slice at
the position specified by \a index.
Slice ownership is passed to the series.
Returns \c true if inserting succeeds.
*/
bool QPieSeries::insert(qsizetype index, QPieSlice *slice)
{
Q_D(QPieSeries);
if (index < 0 || index > d->m_slices.size())
return false;
if (!slice || d->m_slices.contains(slice))
return false;
if (slice->series()) // already added to some series
return false;
if (qIsNaN(slice->value()) || qIsInf(slice->value()))
return false;
slice->setParent(this);
slice->d_func()->m_series = this;
d->m_slices.insert(index, slice);
d->updateData();
connect(slice, SIGNAL(sliceChanged()), this, SLOT(handleSliceChange()));
emit added(QList<QPieSlice *>() << slice);
emit countChanged();
return true;
}
/*!
Removes a single slice, specified by \a slice, from the series and deletes it
permanently.
The pointer cannot be referenced after this call.
Returns \c true if the removal succeeds.
*/
bool QPieSeries::remove(QPieSlice *slice)
{
Q_D(QPieSeries);
if (!d->m_slices.removeOne(slice))
return false;
d->updateData();
emit removed(QList<QPieSlice *>() << slice);
emit countChanged();
delete slice;
slice = 0;
return true;
}
/*!
Takes a single slice, specified by \a slice, from the series. Does not delete
the slice object.
\note The series remains the slice's parent object. You must set the
parent object to take full ownership.
Returns \c true if the take operation was successful.
*/
bool QPieSeries::take(QPieSlice *slice)
{
Q_D(QPieSeries);
if (!d->m_slices.removeOne(slice))
return false;
slice->d_func()->m_series = 0;
slice->disconnect(this);
d->updateData();
emit removed(QList<QPieSlice *>() << slice);
emit countChanged();
return true;
}
/*!
Clears all slices from the series.
*/
void QPieSeries::clear()
{
Q_D(QPieSeries);
if (d->m_slices.size() == 0)
return;
QList<QPieSlice *> slices = d->m_slices;
for (QPieSlice *s : std::as_const(d->m_slices))
d->m_slices.removeOne(s);
d->updateData();
emit removed(slices);
emit countChanged();
for (QPieSlice *s : std::as_const(slices))
delete s;
}
/*!
Returns a list of slices that belong to this series.
*/
QList<QPieSlice *> QPieSeries::slices() const
{
Q_D(const QPieSeries);
return d->m_slices;
}
/*!
Returns the number of the slices in this series.
*/
qsizetype QPieSeries::count() const
{
Q_D(const QPieSeries);
return d->m_slices.size();
}
/*!
Returns \c true if the series is empty.
*/
bool QPieSeries::isEmpty() const
{
Q_D(const QPieSeries);
return d->m_slices.isEmpty();
}
/*!
Returns the sum of all slice values in this series.
\sa QPieSlice::value(), QPieSlice::setValue(), QPieSlice::percentage()
*/
qreal QPieSeries::sum() const
{
Q_D(const QPieSeries);
return d->m_sum;
}
void QPieSeries::setHorizontalPosition(qreal relativePosition)
{
Q_D(QPieSeries);
if (relativePosition < 0.0)
relativePosition = 0.0;
if (relativePosition > 1.0)
relativePosition = 1.0;
if (qFuzzyCompare(d->m_pieRelativeHorPos, relativePosition)) {
qCDebug(lcProperties2D, "QPieSeries::setHorizontalPosition. Position is already set to: %f",
relativePosition);
return;
}
d->m_pieRelativeHorPos = relativePosition;
emit horizontalPositionChanged();
emit update();
}
qreal QPieSeries::horizontalPosition() const
{
Q_D(const QPieSeries);
return d->m_pieRelativeHorPos;
}
void QPieSeries::setVerticalPosition(qreal relativePosition)
{
Q_D(QPieSeries);
if (relativePosition < 0.0)
relativePosition = 0.0;
if (relativePosition > 1.0)
relativePosition = 1.0;
if (qFuzzyCompare(d->m_pieRelativeVerPos, relativePosition)) {
qCDebug(lcProperties2D, "QPieSeries::setVerticalPosition. Position is already set to: %f",
relativePosition);
return;
}
d->m_pieRelativeVerPos = relativePosition;
emit verticalPositionChanged();
emit update();
}
qreal QPieSeries::verticalPosition() const
{
Q_D(const QPieSeries);
return d->m_pieRelativeVerPos;
}
void QPieSeries::setPieSize(qreal relativeSize)
{
Q_D(QPieSeries);
relativeSize = qBound((qreal)0.0, relativeSize, (qreal)1.0);
d->setSizes(qMin(d->m_holeRelativeSize, relativeSize), relativeSize);
}
qreal QPieSeries::pieSize() const
{
Q_D(const QPieSeries);
return d->m_pieRelativeSize;
}
/*!
Sets the start angle of the pie.
A full pie is 360 degrees, where 0 degrees is at 12 o'clock.
\a angle must be smaller than the end angle.
\sa startAngle(), endAngle(), setEndAngle()
*/
void QPieSeries::setStartAngle(qreal angle)
{
Q_D(QPieSeries);
if (qFuzzyCompare(d->m_pieStartAngle, angle)) {
qCDebug(lcSeries2D, "QPieSeries::setStartAngle. Angle is already set to: %f",
angle);
return;
}
d->m_pieStartAngle = angle;
d->updateData();
emit startAngleChanged();
emit update();
}
/*!
Returns the start angle of the pie.
A full pie is 360 degrees, where 0 degrees is at 12 o'clock.
\sa setStartAngle(), endAngle(), setEndAngle()
*/
qreal QPieSeries::startAngle() const
{
Q_D(const QPieSeries);
return d->m_pieStartAngle;
}
/*!
Sets the end angle of the pie.
A full pie is 360 degrees, where 0 degrees is at 12 o'clock.
\a angle must be greater than the start angle.
\sa endAngle(), startAngle(), setStartAngle()
*/
void QPieSeries::setEndAngle(qreal angle)
{
Q_D(QPieSeries);
if (qFuzzyCompare(d->m_pieEndAngle, angle)) {
qCDebug(lcSeries2D, "QPieSeries::setEndAngle. Angle is already set to: %f",
angle);
return;
}
d->m_pieEndAngle = angle;
d->updateData();
emit endAngleChanged();
emit update();
}
/*!
Returns the end angle of the pie.
A full pie is 360 degrees, where 0 degrees is at 12 o'clock.
\sa setEndAngle(), startAngle(), setStartAngle()
*/
qreal QPieSeries::endAngle() const
{
Q_D(const QPieSeries);
return d->m_pieEndAngle;
}
void QPieSeries::componentComplete()
{
for (QObject *child : children()) {
if (qobject_cast<QPieSlice *>(child)) {
QPieSeries::append(qobject_cast<QPieSlice *>(child));
qCDebug(lcSeries2D) << "append slice: " << child << "to pieSeries";
}
}
qCDebug(lcEvents2D, "QPieSeries::componentComplete.");
QAbstractSeries::componentComplete();
}
/*!
Sets the visibility of all slice labels to \a visible.
\note This function affects only the current slices in the series.
If a new slice is added, the default label visibility is \c false.
\sa QPieSlice::isLabelVisible(), QPieSlice::setLabelVisible()
*/
void QPieSeries::setLabelsVisible(bool visible)
{
Q_D(QPieSeries);
for (QPieSlice *s : std::as_const(d->m_slices))
s->setLabelVisible(visible);
}
/*!
Sets the position of all the slice labels to \a position.
\note This function affects only the current slices in the series.
If a new slice is added, the default label position is QPieSlice::LabelOutside.
\sa QPieSlice::labelPosition(), QPieSlice::setLabelPosition()
*/
void QPieSeries::setLabelsPosition(QPieSlice::LabelPosition position)
{
Q_D(QPieSeries);
for (QPieSlice *s : std::as_const(d->m_slices))
s->setLabelPosition(position);
}
void QPieSeries::handleSliceChange()
{
QPieSlice *pSlice = qobject_cast<QPieSlice *>(sender());
Q_D(QPieSeries);
Q_ASSERT(d->m_slices.contains(pSlice));
d->updateData();
}
QPieSeries::QPieSeries(QPieSeriesPrivate &dd, QObject *parent)
: QAbstractSeries(dd, parent)
{}
void QPieSeries::setHoleSize(qreal holeSize)
{
Q_D(QPieSeries);
holeSize = qBound((qreal)0.0, holeSize, (qreal)1.0);
d->setSizes(holeSize, qMax(d->m_pieRelativeSize, holeSize));
}
qreal QPieSeries::holeSize() const
{
Q_D(const QPieSeries);
return d->m_holeRelativeSize;
}
qreal QPieSeries::angleSpanVisibleLimit() const
{
Q_D(const QPieSeries);
return d->m_angleSpanVisibleLimit;
}
void QPieSeries::setAngleSpanVisibleLimit(qreal newAngleSpanVisibleLimit)
{
Q_D(QPieSeries);
if (qFuzzyCompare(d->m_angleSpanVisibleLimit, newAngleSpanVisibleLimit)) {
qCDebug(lcProperties2D, "QPieSeries::setAngleSpanVisibleLimit. Limit is already set to: %f",
newAngleSpanVisibleLimit);
return;
}
d->m_angleSpanVisibleLimit = newAngleSpanVisibleLimit;
d->updateData(true);
emit angleSpanVisibleLimitChanged();
}
QPieSeries::VisibleMode QPieSeries::angleSpanVisibleMode() const
{
Q_D(const QPieSeries);
return d->m_angleSpanVisibleMode;
}
void QPieSeries::setAngleSpanVisibleMode(QPieSeries::VisibleMode newAngleSpanVisibleMode)
{
Q_D(QPieSeries);
if (d->m_angleSpanVisibleMode == newAngleSpanVisibleMode) {
qCDebug(lcProperties2D) << "QPieSeries::setAngleSpanVisibleMode. Mode is already set to: "
<< newAngleSpanVisibleMode;
return;
}
d->m_angleSpanVisibleMode = newAngleSpanVisibleMode;
d->updateData(true);
emit angleSpanVisibleModeChanged();
}
QPieSeriesPrivate::QPieSeriesPrivate()
: m_pieRelativeHorPos(.5)
, m_pieRelativeVerPos(.5)
, m_pieRelativeSize(.7)
, m_pieStartAngle(0)
, m_pieEndAngle(360)
, m_sum(0)
, m_holeRelativeSize(.0)
, m_angleSpanVisibleLimit(.0)
, m_angleSpanVisibleMode(QPieSeries::VisibleMode::First)
{}
void QPieSeriesPrivate::updateData(bool clearHidden)
{
Q_Q(QPieSeries);
// calculate sum of all slices
qreal sum = 0;
for (QPieSlice *s : std::as_const(m_slices))
sum += s->value();
if (!qFuzzyCompare(m_sum, sum)) {
m_sum = sum;
emit q->sumChanged();
}
// nothing to show..
if (qFuzzyCompare(m_sum, 0))
return;
// update slice attributes
qreal sliceAngle = m_pieStartAngle;
qreal pieSpan = m_pieEndAngle - m_pieStartAngle;
auto hideMode = q->angleSpanVisibleMode();
bool hideNextSmallSlice = false;
for (QPieSlice *s : std::as_const(m_slices)) {
QPieSlicePrivate *d = s->d_func();
d->setPercentage(s->value() / m_sum);
d->setStartAngle(sliceAngle);
d->setAngleSpan(pieSpan * s->percentage());
sliceAngle += s->angleSpan();
// Reset hidden status
if (clearHidden) {
d->m_hideLabel = false;
d->setLabelVisible(true);
}
// Check if current slice is small, and if the previous slice was also small
// Hide the label on this one if the mode matches
if (d->m_angleSpan < m_angleSpanVisibleLimit
&& ((!hideNextSmallSlice && hideMode == QPieSeries::VisibleMode::Even)
|| (hideNextSmallSlice
&& (hideMode == QPieSeries::VisibleMode::Odd
|| hideMode == QPieSeries::VisibleMode::First))
|| hideMode == QPieSeries::VisibleMode::None)) {
d->setLabelVisible(false, true);
}
if (hideMode == QPieSeries::VisibleMode::First) {
// Hide every other small slice label after the first shown one
hideNextSmallSlice = d->m_angleSpan < m_angleSpanVisibleLimit;
} else {
// Hide only every other odd/even small slice label
hideNextSmallSlice = (!hideNextSmallSlice && d->m_angleSpan < m_angleSpanVisibleLimit);
}
}
emit q->update();
}
void QPieSeriesPrivate::updateLabels()
{
Q_Q(QPieSeries);
emit q->update();
}
void QPieSeriesPrivate::setSizes(qreal innerSize, qreal outerSize)
{
Q_Q(QPieSeries);
if (!qFuzzyCompare(m_holeRelativeSize, innerSize)) {
m_holeRelativeSize = innerSize;
emit q->holeSizeChanged();
} else {
qCDebug(lcProperties2D, "QPieSeries::setSizes. Inner size is already set to: %f",
innerSize);
}
if (!qFuzzyCompare(m_pieRelativeSize, outerSize)) {
m_pieRelativeSize = outerSize;
emit q->pieSizeChanged();
} else {
qCDebug(lcProperties2D, "QPieSeries::setSizes. Outer size is already set to: %f",
outerSize);
}
}
QT_END_NAMESPACE
|