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
|
// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <spinner/spinner.h>
#include <QApplication>
#include <QBoxLayout>
#include <QCalendarWidget>
#include <QGroupBox>
#include <QLabel>
#include <QMetaEnum>
#include <QTextEdit>
#include <QToolButton>
using namespace SpinnerSolution;
enum class State {
NotRunning,
Running
};
static QString colorButtonStyleSheet(const QColor &bgColor)
{
QString rc("border-width: 2px; border-radius: 2px; border-color: black; ");
rc += bgColor.isValid() ? "border-style: solid; background:" + bgColor.name() + ";"
: QString("border-style: dotted;");
return rc;
}
static QColor stateToColor(State state)
{
switch (state) {
case State::NotRunning: return Qt::gray;
case State::Running: return Qt::yellow;
}
return {};
}
class StateIndicator : public QLabel
{
public:
StateIndicator(QWidget *parent = nullptr)
: QLabel(parent)
{
setFixedSize(30, 30);
m_spinner = new Spinner(SpinnerSize::Small, this);
m_spinner->hide();
updateState();
}
void setState(State state)
{
if (m_state == state)
return;
m_state = state;
updateState();
}
private:
void updateState()
{
setStyleSheet(colorButtonStyleSheet(stateToColor(m_state)));
if (m_state == State::Running)
m_spinner->show();
else
m_spinner->hide();
}
State m_state = State::NotRunning;
Spinner *m_spinner = nullptr;
};
class StateWidget : public QWidget
{
public:
StateWidget() : m_stateIndicator(new StateIndicator(this)) {
QBoxLayout *layout = new QHBoxLayout(this);
layout->setContentsMargins(0, 0, 0, 0);
layout->addWidget(m_stateIndicator);
setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
}
void setState(State state) { m_stateIndicator->setState(state); }
protected:
StateIndicator *m_stateIndicator = nullptr;
};
QGroupBox *createGroupBox(SpinnerSize size, QWidget *widget)
{
const QMetaEnum spinnerSize = QMetaEnum::fromType<SpinnerSize>();
QGroupBox *groupBox = new QGroupBox(spinnerSize.valueToKey(int(size)));
StateWidget *stateWidget = new StateWidget;
QToolButton *startButton = new QToolButton;
startButton->setText("Start");
QToolButton *stopButton = new QToolButton;
stopButton->setText("Stop");
QVBoxLayout *mainLayout = new QVBoxLayout(groupBox);
QHBoxLayout *topLayout = new QHBoxLayout();
topLayout->addWidget(stateWidget);
topLayout->addWidget(startButton);
topLayout->addWidget(stopButton);
topLayout->addStretch();
mainLayout->addLayout(topLayout);
mainLayout->addWidget(widget);
Spinner *spinner = new Spinner(size, widget);
spinner->hide(); // TODO: make the default hidden?
QObject::connect(startButton, &QAbstractButton::clicked, groupBox, [=] {
stateWidget->setState(State::Running);
spinner->show();
widget->setEnabled(false);
});
QObject::connect(stopButton, &QAbstractButton::clicked, groupBox, [=] {
stateWidget->setState(State::NotRunning);
spinner->hide();
widget->setEnabled(true);
});
return groupBox;
}
static QWidget *hr()
{
auto frame = new QFrame;
frame->setFrameShape(QFrame::HLine);
frame->setFrameShadow(QFrame::Sunken);
return frame;
}
static QString pangram(int count)
{
return QStringList(count, "The quick brown fox jumps over the lazy dog.").join(' ');
}
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QWidget mainWidget;
mainWidget.setWindowTitle("Spinner Example");
QVBoxLayout *mainLayout = new QVBoxLayout(&mainWidget);
QLabel *smallWidget = new QLabel;
smallWidget->setFixedWidth(30);
QGroupBox *smallGroupBox = createGroupBox(SpinnerSize::Small, smallWidget);
mainLayout->addWidget(smallGroupBox);
mainLayout->addWidget(hr());
QCalendarWidget *mediumWidget = new QCalendarWidget;
mediumWidget->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
QGroupBox *mediumGroupBox = createGroupBox(SpinnerSize::Medium, mediumWidget);
mainLayout->addWidget(mediumGroupBox);
mainLayout->addWidget(hr());
QTextEdit *largeWidget = new QTextEdit;
largeWidget->setText(pangram(25));
QGroupBox *largeGroupBox = createGroupBox(SpinnerSize::Large, largeWidget);
mainLayout->addWidget(largeGroupBox);
mainWidget.show();
return app.exec();
}
|
