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
|
// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <private/chartcoloraxisy_p.h>
#include <QtCharts/QColorAxis>
#include <private/chartpresenter_p.h>
#include <private/abstractchartlayout_p.h>
#include <QtWidgets/QGraphicsLayout>
QT_BEGIN_NAMESPACE
ChartColorAxisY::ChartColorAxisY(QColorAxis *axis, QGraphicsItem *item)
: VerticalAxis(axis, item, true)
, m_axis(axis)
{
}
ChartColorAxisY::~ChartColorAxisY()
{
}
QList<qreal> ChartColorAxisY::calculateLayout() const
{
int tickCount = m_axis->tickCount();
Q_ASSERT(tickCount >= 2);
QList<qreal> points;
points.resize(tickCount);
const QRectF &gridRect = gridGeometry();
const qreal deltaY = gridRect.height() / (qreal(tickCount) - 1.0);
for (int i = 0; i < tickCount; ++i)
points[i] = qreal(i) * -deltaY + gridRect.bottom();
return points;
}
void ChartColorAxisY::updateGeometry()
{
setLabels(createColorLabels(min(), max(), m_axis->tickCount()));
VerticalAxis::updateGeometry();
}
QSizeF ChartColorAxisY::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
{
Q_UNUSED(constraint);
QSizeF sh;
QSizeF base = VerticalAxis::sizeHint(which, constraint);
const QStringList &ticksList = createColorLabels(min(), max(), m_axis->tickCount());
qreal width = 0;
// Height of vertical axis sizeHint indicates the maximum distance labels can extend past
// first and last ticks. Base height is irrelevant.
qreal height = 0;
switch (which) {
case Qt::MinimumSize: {
if (labelsVisible()) {
QRectF boundingRect = ChartPresenter::textBoundingRect(axis()->labelsFont(),
QStringLiteral("..."),
axis()->labelsAngle());
width = boundingRect.width() + labelPadding() + base.width() + m_axis->size()
+ colorScalePadding() + 1.0;
height = boundingRect.height() / 2.0;
} else {
width = base.width() + m_axis->size() + colorScalePadding() + 1.0;
height = 0;
}
sh = QSizeF(width, height);
break;
}
case Qt::PreferredSize: {
if (labelsVisible()) {
qreal labelWidth = 0.0;
qreal firstHeight = -1.0;
for (const QString &s : ticksList) {
QRectF rect = ChartPresenter::textBoundingRect(axis()->labelsFont(), s,
axis()->labelsAngle());
labelWidth = qMax(rect.width(), labelWidth);
height = rect.height();
if (firstHeight < 0.0)
firstHeight = height;
}
width = labelWidth + labelPadding() + base.width() + m_axis->size() + colorScalePadding()
+ 2.0; // two pixels of tolerance
height = qMax(height, firstHeight) / 2.0;
} else {
width = base.width() + m_axis->size() + colorScalePadding()
+ 2.0; // two pixels of tolerance
height = 0;
}
sh = QSizeF(width, height);
break;
}
default:
break;
}
return sh;
}
QT_END_NAMESPACE
#include "moc_chartcoloraxisy_p.cpp"
|
