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3** Copyright (C) 2016 The Qt Company Ltd.
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6** This file is part of the Qt Charts module of the Qt Toolkit.
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29
30#include <private/polarchartaxis_p.h>
31#include <private/qabstractaxis_p.h>
32#include <private/chartpresenter_p.h>
33#include <QtCharts/QValueAxis>
34
35QT_CHARTS_BEGIN_NAMESPACE
36
37PolarChartAxis::PolarChartAxis(QAbstractAxis *axis, QGraphicsItem *item, bool intervalAxis)
38 : ChartAxisElement(axis, item, intervalAxis)
39{
40}
41
42PolarChartAxis::~PolarChartAxis()
43{
44
45}
46
47void PolarChartAxis::setGeometry(const QRectF &axis, const QRectF &grid)
48{
49 Q_UNUSED(grid);
50 setAxisGeometry(axis);
51
52 if (isEmpty()) {
53 prepareGeometryChange();
54 return;
55 }
56
57 QVector<qreal> layout = calculateLayout();
58 updateLayout(layout);
59}
60
61QRectF PolarChartAxis::gridGeometry() const
62{
63 return QRectF();
64}
65
66void PolarChartAxis::updateLayout(QVector<qreal> &layout)
67{
68 int diff = ChartAxisElement::layout().size() - layout.size();
69
70 if (animation()) {
71 switch (presenter()->state()) {
72 case ChartPresenter::ZoomInState:
73 case ChartPresenter::ZoomOutState:
74 case ChartPresenter::ScrollUpState:
75 case ChartPresenter::ScrollLeftState:
76 case ChartPresenter::ScrollDownState:
77 case ChartPresenter::ScrollRightState:
78 case ChartPresenter::ShowState:
79 animation()->setAnimationType(AxisAnimation::DefaultAnimation);
80 break;
81 }
82 // Update to "old" geometry before starting animation to avoid incorrectly sized
83 // axes lingering in wrong position compared to series plot before animation can kick in.
84 // Note that the position mismatch still exists even with this update, but it will be
85 // far less ugly.
86 if (ChartAxisElement::layout().size() != 0)
87 updateGeometry();
88 }
89
90 if (diff > 0)
91 deleteItems(count: diff);
92 else if (diff <= 0)
93 createItems(count: -diff);
94
95 updateMinorTickItems();
96
97 if (animation()) {
98 animation()->setValues(oldLayout&: ChartAxisElement::layout(), newLayout&: layout);
99 presenter()->startAnimation(animation: animation());
100 } else {
101 setLayout(layout);
102 updateGeometry();
103 }
104}
105
106bool PolarChartAxis::isEmpty()
107{
108 return !axisGeometry().isValid() || qFuzzyIsNull(d: min() - max());
109}
110
111void PolarChartAxis::deleteItems(int count)
112{
113 QList<QGraphicsItem *> gridLines = gridItems();
114 QList<QGraphicsItem *> labels = labelItems();
115 QList<QGraphicsItem *> shades = shadeItems();
116 QList<QGraphicsItem *> axis = arrowItems();
117
118 for (int i = 0; i < count; ++i) {
119 if (gridItems().size() == 1 || (((gridLines.size() + 1) % 2) && gridLines.size() > 0))
120 delete(shades.takeLast());
121 delete(gridLines.takeLast());
122 delete(labels.takeLast());
123 delete(axis.takeLast());
124 }
125}
126
127void PolarChartAxis::handleShadesBrushChanged(const QBrush &brush)
128{
129 foreach (QGraphicsItem *item, shadeItems())
130 static_cast<QGraphicsPathItem *>(item)->setBrush(brush);
131}
132
133void PolarChartAxis::handleShadesPenChanged(const QPen &pen)
134{
135 foreach (QGraphicsItem *item, shadeItems())
136 static_cast<QGraphicsPathItem *>(item)->setPen(pen);
137}
138
139QT_CHARTS_END_NAMESPACE
140
141#include "moc_polarchartaxis_p.cpp"
142

source code of qtcharts/src/charts/axis/polarchartaxis.cpp