1/****************************************************************************
2**
3** Copyright (C) 2017 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the examples of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:BSD$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** BSD License Usage
18** Alternatively, you may use this file under the terms of the BSD license
19** as follows:
20**
21** "Redistribution and use in source and binary forms, with or without
22** modification, are permitted provided that the following conditions are
23** met:
24** * Redistributions of source code must retain the above copyright
25** notice, this list of conditions and the following disclaimer.
26** * Redistributions in binary form must reproduce the above copyright
27** notice, this list of conditions and the following disclaimer in
28** the documentation and/or other materials provided with the
29** distribution.
30** * Neither the name of The Qt Company Ltd nor the names of its
31** contributors may be used to endorse or promote products derived
32** from this software without specific prior written permission.
33**
34**
35** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
36** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
37** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
38** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
39** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
42** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
43** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
44** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
45** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
46**
47** $QT_END_LICENSE$
48**
49****************************************************************************/
50
51#include "settingsdialog.h"
52#include <QCheckBox>
53#include <QComboBox>
54#include <QDialogButtonBox>
55#include <QLabel>
56#include <QPushButton>
57#include <QSlider>
58#include <QSpinBox>
59#include <QVBoxLayout>
60
61SettingsDialog::SettingsDialog(
62 const QList<QAudioDeviceInfo> &availableInputDevices,
63 const QList<QAudioDeviceInfo> &availableOutputDevices,
64 QWidget *parent)
65 : QDialog(parent)
66 , m_windowFunction(DefaultWindowFunction)
67 , m_inputDeviceComboBox(new QComboBox(this))
68 , m_outputDeviceComboBox(new QComboBox(this))
69 , m_windowFunctionComboBox(new QComboBox(this))
70{
71 QVBoxLayout *dialogLayout = new QVBoxLayout(this);
72
73 // Populate combo boxes
74
75 for (const QAudioDeviceInfo &device : availableInputDevices)
76 m_inputDeviceComboBox->addItem(atext: device.deviceName(),
77 auserData: QVariant::fromValue(value: device));
78 for (const QAudioDeviceInfo &device : availableOutputDevices)
79 m_outputDeviceComboBox->addItem(atext: device.deviceName(),
80 auserData: QVariant::fromValue(value: device));
81
82 m_windowFunctionComboBox->addItem(atext: tr(s: "None"), auserData: QVariant::fromValue(value: int(NoWindow)));
83 m_windowFunctionComboBox->addItem(atext: "Hann", auserData: QVariant::fromValue(value: int(HannWindow)));
84 m_windowFunctionComboBox->setCurrentIndex(m_windowFunction);
85
86 // Initialize default devices
87 if (!availableInputDevices.empty())
88 m_inputDevice = availableInputDevices.front();
89 if (!availableOutputDevices.empty())
90 m_outputDevice = availableOutputDevices.front();
91
92 // Add widgets to layout
93
94 QScopedPointer<QHBoxLayout> inputDeviceLayout(new QHBoxLayout);
95 QLabel *inputDeviceLabel = new QLabel(tr(s: "Input device"), this);
96 inputDeviceLayout->addWidget(inputDeviceLabel);
97 inputDeviceLayout->addWidget(m_inputDeviceComboBox);
98 dialogLayout->addLayout(layout: inputDeviceLayout.data());
99 inputDeviceLayout.take(); // ownership transferred to dialogLayout
100
101 QScopedPointer<QHBoxLayout> outputDeviceLayout(new QHBoxLayout);
102 QLabel *outputDeviceLabel = new QLabel(tr(s: "Output device"), this);
103 outputDeviceLayout->addWidget(outputDeviceLabel);
104 outputDeviceLayout->addWidget(m_outputDeviceComboBox);
105 dialogLayout->addLayout(layout: outputDeviceLayout.data());
106 outputDeviceLayout.take(); // ownership transferred to dialogLayout
107
108 QScopedPointer<QHBoxLayout> windowFunctionLayout(new QHBoxLayout);
109 QLabel *windowFunctionLabel = new QLabel(tr(s: "Window function"), this);
110 windowFunctionLayout->addWidget(windowFunctionLabel);
111 windowFunctionLayout->addWidget(m_windowFunctionComboBox);
112 dialogLayout->addLayout(layout: windowFunctionLayout.data());
113 windowFunctionLayout.take(); // ownership transferred to dialogLayout
114
115 // Connect
116 connect(sender: m_inputDeviceComboBox, signal: QOverload<int>::of(ptr: &QComboBox::activated),
117 receiver: this, slot: &SettingsDialog::inputDeviceChanged);
118 connect(sender: m_outputDeviceComboBox, signal: QOverload<int>::of(ptr: &QComboBox::activated),
119 receiver: this, slot: &SettingsDialog::outputDeviceChanged);
120 connect(sender: m_windowFunctionComboBox, signal: QOverload<int>::of(ptr: &QComboBox::activated),
121 receiver: this, slot: &SettingsDialog::windowFunctionChanged);
122
123 // Add standard buttons to layout
124 QDialogButtonBox *buttonBox = new QDialogButtonBox(this);
125 buttonBox->setStandardButtons(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
126 dialogLayout->addWidget(buttonBox);
127
128 // Connect standard buttons
129 connect(sender: buttonBox->button(which: QDialogButtonBox::Ok), signal: &QPushButton::clicked,
130 receiver: this, slot: &SettingsDialog::accept);
131 connect(sender: buttonBox->button(which: QDialogButtonBox::Cancel), signal: &QPushButton::clicked,
132 receiver: this, slot: &SettingsDialog::reject);
133
134 setLayout(dialogLayout);
135}
136
137SettingsDialog::~SettingsDialog()
138{
139
140}
141
142void SettingsDialog::windowFunctionChanged(int index)
143{
144 m_windowFunction = static_cast<WindowFunction>(
145 m_windowFunctionComboBox->itemData(index).value<int>());
146}
147
148void SettingsDialog::inputDeviceChanged(int index)
149{
150 m_inputDevice = m_inputDeviceComboBox->itemData(index).value<QAudioDeviceInfo>();
151}
152
153void SettingsDialog::outputDeviceChanged(int index)
154{
155 m_outputDevice = m_outputDeviceComboBox->itemData(index).value<QAudioDeviceInfo>();
156}
157
158

source code of qtmultimedia/examples/multimedia/spectrum/app/settingsdialog.cpp