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
|
/****************************************************************************
**
** Copyright (C) 2014 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Enterprise Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/
#include "polarchartlogvalueaxisangular_p.h"
#include "abstractchartlayout_p.h"
#include "chartpresenter_p.h"
#include "qlogvalueaxis.h"
#include <qmath.h>
#include <QDebug>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
PolarChartLogValueAxisAngular::PolarChartLogValueAxisAngular(QLogValueAxis *axis, QGraphicsItem *item)
: PolarChartAxisAngular(axis, item)
{
QObject::connect(axis, SIGNAL(baseChanged(qreal)), this, SLOT(handleBaseChanged(qreal)));
QObject::connect(axis, SIGNAL(labelFormatChanged(QString)), this, SLOT(handleLabelFormatChanged(QString)));
}
PolarChartLogValueAxisAngular::~PolarChartLogValueAxisAngular()
{
}
QVector<qreal> PolarChartLogValueAxisAngular::calculateLayout() const
{
QLogValueAxis *logValueAxis = static_cast<QLogValueAxis *>(axis());
const qreal logMax = log10(logValueAxis->max()) / log10(logValueAxis->base());
const qreal logMin = log10(logValueAxis->min()) / log10(logValueAxis->base());
const qreal startEdge = logMin < logMax ? logMin : logMax;
const qreal delta = 360.0 / qAbs(logMax - logMin);
const qreal initialSpan = (ceil(startEdge) - startEdge) * delta;
int tickCount = qAbs(ceil(logMax) - ceil(logMin));
QVector<qreal> points;
points.resize(tickCount);
for (int i = 0; i < tickCount; ++i) {
qreal angularCoordinate = initialSpan + (delta * qreal(i));
points[i] = angularCoordinate;
}
return points;
}
void PolarChartLogValueAxisAngular::createAxisLabels(const QVector<qreal> &layout)
{
QLogValueAxis *logValueAxis = static_cast<QLogValueAxis *>(axis());
setLabels(createLogValueLabels(logValueAxis->min(),
logValueAxis->max(),
logValueAxis->base(),
layout.size(),
logValueAxis->labelFormat()));
}
void PolarChartLogValueAxisAngular::handleBaseChanged(qreal base)
{
Q_UNUSED(base);
QGraphicsLayoutItem::updateGeometry();
if (presenter())
presenter()->layout()->invalidate();
}
void PolarChartLogValueAxisAngular::handleLabelFormatChanged(const QString &format)
{
Q_UNUSED(format);
QGraphicsLayoutItem::updateGeometry();
if (presenter())
presenter()->layout()->invalidate();
}
#include "moc_polarchartlogvalueaxisangular_p.cpp"
QTCOMMERCIALCHART_END_NAMESPACE
|