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3 ** Copyright (C) 2017 Andre Hartmann <aha_1980@gmx.de>
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50
51 #include "sendframebox.h"
52 #include "ui_sendframebox.h"
53
54 enum {
55 MaxStandardId = 0x7FF,
56 MaxExtendedId = 0x10000000
57 };
58
59 enum {
60 MaxPayload = 8,
61 MaxPayloadFd = 64
62 };
63
HexIntegerValidator(QObject * parent)64 HexIntegerValidator::HexIntegerValidator(QObject *parent) :
65 QValidator(parent),
66 m_maximum(MaxStandardId)
67 {
68 }
69
validate(QString & input,int &) const70 QValidator::State HexIntegerValidator::validate(QString &input, int &) const
71 {
72 bool ok;
73 uint value = input.toUInt(&ok, 16);
74
75 if (input.isEmpty())
76 return Intermediate;
77
78 if (!ok || value > m_maximum)
79 return Invalid;
80
81 return Acceptable;
82 }
83
setMaximum(uint maximum)84 void HexIntegerValidator::setMaximum(uint maximum)
85 {
86 m_maximum = maximum;
87 }
88
HexStringValidator(QObject * parent)89 HexStringValidator::HexStringValidator(QObject *parent) :
90 QValidator(parent),
91 m_maxLength(MaxPayload)
92 {
93 }
94
validate(QString & input,int & pos) const95 QValidator::State HexStringValidator::validate(QString &input, int &pos) const
96 {
97 const int maxSize = 2 * m_maxLength;
98 const QChar space = QLatin1Char(' ');
99 QString data = input;
100 data.remove(space);
101
102 if (data.isEmpty())
103 return Intermediate;
104
105 // limit maximum size and forbid trailing spaces
106 if ((data.size() > maxSize) || (data.size() == maxSize && input.endsWith(space)))
107 return Invalid;
108
109 // check if all input is valid
110 const QRegularExpression re(QStringLiteral("^[[:xdigit:]]*$"));
111 if (!re.match(data).hasMatch())
112 return Invalid;
113
114 // insert a space after every two hex nibbles
115 const QRegularExpression insertSpace(QStringLiteral("(?:[[:xdigit:]]{2} )*[[:xdigit:]]{3}"));
116 if (insertSpace.match(input).hasMatch()) {
117 input.insert(input.size() - 1, space);
118 pos = input.size();
119 }
120
121 return Acceptable;
122 }
123
setMaxLength(int maxLength)124 void HexStringValidator::setMaxLength(int maxLength)
125 {
126 m_maxLength = maxLength;
127 }
128
SendFrameBox(QWidget * parent)129 SendFrameBox::SendFrameBox(QWidget *parent) :
130 QGroupBox(parent),
131 m_ui(new Ui::SendFrameBox)
132 {
133 m_ui->setupUi(this);
134
135 m_hexIntegerValidator = new HexIntegerValidator(this);
136 m_ui->frameIdEdit->setValidator(m_hexIntegerValidator);
137 m_hexStringValidator = new HexStringValidator(this);
138 m_ui->payloadEdit->setValidator(m_hexStringValidator);
139
140 connect(m_ui->dataFrame, &QRadioButton::toggled, [this](bool set) {
141 if (set)
142 m_ui->flexibleDataRateBox->setEnabled(true);
143 });
144
145 connect(m_ui->remoteFrame, &QRadioButton::toggled, [this](bool set) {
146 if (set) {
147 m_ui->flexibleDataRateBox->setEnabled(false);
148 m_ui->flexibleDataRateBox->setChecked(false);
149 }
150 });
151
152 connect(m_ui->errorFrame, &QRadioButton::toggled, [this](bool set) {
153 if (set) {
154 m_ui->flexibleDataRateBox->setEnabled(false);
155 m_ui->flexibleDataRateBox->setChecked(false);
156 }
157 });
158
159 connect(m_ui->extendedFormatBox, &QCheckBox::toggled, [this](bool set) {
160 m_hexIntegerValidator->setMaximum(set ? MaxExtendedId : MaxStandardId);
161 });
162
163 connect(m_ui->flexibleDataRateBox, &QCheckBox::toggled, [this](bool set) {
164 m_hexStringValidator->setMaxLength(set ? MaxPayloadFd : MaxPayload);
165 m_ui->bitrateSwitchBox->setEnabled(set);
166 if (!set)
167 m_ui->bitrateSwitchBox->setChecked(false);
168 });
169
170 auto frameIdTextChanged = [this]() {
171 const bool hasFrameId = !m_ui->frameIdEdit->text().isEmpty();
172 m_ui->sendButton->setEnabled(hasFrameId);
173 m_ui->sendButton->setToolTip(hasFrameId
174 ? QString() : tr("Cannot send because no Frame ID was given."));
175 };
176 connect(m_ui->frameIdEdit, &QLineEdit::textChanged, frameIdTextChanged);
177 frameIdTextChanged();
178
179 connect(m_ui->sendButton, &QPushButton::clicked, [this]() {
180 const uint frameId = m_ui->frameIdEdit->text().toUInt(nullptr, 16);
181 QString data = m_ui->payloadEdit->text();
182 const QByteArray payload = QByteArray::fromHex(data.remove(QLatin1Char(' ')).toLatin1());
183
184 QCanBusFrame frame = QCanBusFrame(frameId, payload);
185 frame.setExtendedFrameFormat(m_ui->extendedFormatBox->isChecked());
186 frame.setFlexibleDataRateFormat(m_ui->flexibleDataRateBox->isChecked());
187 frame.setBitrateSwitch(m_ui->bitrateSwitchBox->isChecked());
188
189 if (m_ui->errorFrame->isChecked())
190 frame.setFrameType(QCanBusFrame::ErrorFrame);
191 else if (m_ui->remoteFrame->isChecked())
192 frame.setFrameType(QCanBusFrame::RemoteRequestFrame);
193
194 emit sendFrame(frame);
195 });
196 }
197
~SendFrameBox()198 SendFrameBox::~SendFrameBox()
199 {
200 delete m_ui;
201 }
202