1 // Copyright (c) 2011-2020 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4
5 #if defined(HAVE_CONFIG_H)
6 #include <config/bitcoin-config.h>
7 #endif
8
9 #include <qt/utilitydialog.h>
10
11 #include <qt/forms/ui_helpmessagedialog.h>
12
13 #include <qt/guiutil.h>
14
15 #include <clientversion.h>
16 #include <init.h>
17 #include <util/system.h>
18 #include <util/strencodings.h>
19
20 #include <stdio.h>
21
22 #include <QCloseEvent>
23 #include <QLabel>
24 #include <QMainWindow>
25 #include <QRegExp>
26 #include <QTextCursor>
27 #include <QTextTable>
28 #include <QVBoxLayout>
29
30 /** "Help message" or "About" dialog box */
HelpMessageDialog(QWidget * parent,bool about)31 HelpMessageDialog::HelpMessageDialog(QWidget *parent, bool about) :
32 QDialog(parent),
33 ui(new Ui::HelpMessageDialog)
34 {
35 ui->setupUi(this);
36
37 QString version = QString{PACKAGE_NAME} + " " + tr("version") + " " + QString::fromStdString(FormatFullVersion());
38
39 if (about)
40 {
41 setWindowTitle(tr("About %1").arg(PACKAGE_NAME));
42
43 std::string licenseInfo = LicenseInfo();
44 /// HTML-format the license message from the core
45 QString licenseInfoHTML = QString::fromStdString(LicenseInfo());
46 // Make URLs clickable
47 QRegExp uri("<(.*)>", Qt::CaseSensitive, QRegExp::RegExp2);
48 uri.setMinimal(true); // use non-greedy matching
49 licenseInfoHTML.replace(uri, "<a href=\"\\1\">\\1</a>");
50 // Replace newlines with HTML breaks
51 licenseInfoHTML.replace("\n", "<br>");
52
53 ui->aboutMessage->setTextFormat(Qt::RichText);
54 ui->scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
55 text = version + "\n" + QString::fromStdString(FormatParagraph(licenseInfo));
56 ui->aboutMessage->setText(version + "<br><br>" + licenseInfoHTML);
57 ui->aboutMessage->setWordWrap(true);
58 ui->helpMessage->setVisible(false);
59 } else {
60 setWindowTitle(tr("Command-line options"));
61 QString header = "Usage: namecoin-qt [command-line options] \n";
62 QTextCursor cursor(ui->helpMessage->document());
63 cursor.insertText(version);
64 cursor.insertBlock();
65 cursor.insertText(header);
66 cursor.insertBlock();
67
68 std::string strUsage = gArgs.GetHelpMessage();
69 QString coreOptions = QString::fromStdString(strUsage);
70 text = version + "\n\n" + header + "\n" + coreOptions;
71
72 QTextTableFormat tf;
73 tf.setBorderStyle(QTextFrameFormat::BorderStyle_None);
74 tf.setCellPadding(2);
75 QVector<QTextLength> widths;
76 widths << QTextLength(QTextLength::PercentageLength, 35);
77 widths << QTextLength(QTextLength::PercentageLength, 65);
78 tf.setColumnWidthConstraints(widths);
79
80 QTextCharFormat bold;
81 bold.setFontWeight(QFont::Bold);
82
83 for (const QString &line : coreOptions.split("\n")) {
84 if (line.startsWith(" -"))
85 {
86 cursor.currentTable()->appendRows(1);
87 cursor.movePosition(QTextCursor::PreviousCell);
88 cursor.movePosition(QTextCursor::NextRow);
89 cursor.insertText(line.trimmed());
90 cursor.movePosition(QTextCursor::NextCell);
91 } else if (line.startsWith(" ")) {
92 cursor.insertText(line.trimmed()+' ');
93 } else if (line.size() > 0) {
94 //Title of a group
95 if (cursor.currentTable())
96 cursor.currentTable()->appendRows(1);
97 cursor.movePosition(QTextCursor::Down);
98 cursor.insertText(line.trimmed(), bold);
99 cursor.insertTable(1, 2, tf);
100 }
101 }
102
103 ui->helpMessage->moveCursor(QTextCursor::Start);
104 ui->scrollArea->setVisible(false);
105 ui->aboutLogo->setVisible(false);
106 }
107
108 GUIUtil::handleCloseWindowShortcut(this);
109 }
110
~HelpMessageDialog()111 HelpMessageDialog::~HelpMessageDialog()
112 {
113 delete ui;
114 }
115
printToConsole()116 void HelpMessageDialog::printToConsole()
117 {
118 // On other operating systems, the expected action is to print the message to the console.
119 tfm::format(std::cout, "%s\n", qPrintable(text));
120 }
121
showOrPrint()122 void HelpMessageDialog::showOrPrint()
123 {
124 #if defined(WIN32)
125 // On Windows, show a message box, as there is no stderr/stdout in windowed applications
126 exec();
127 #else
128 // On other operating systems, print help text to console
129 printToConsole();
130 #endif
131 }
132
on_okButton_accepted()133 void HelpMessageDialog::on_okButton_accepted()
134 {
135 close();
136 }
137
138
139 /** "Shutdown" window */
ShutdownWindow(QWidget * parent,Qt::WindowFlags f)140 ShutdownWindow::ShutdownWindow(QWidget *parent, Qt::WindowFlags f):
141 QWidget(parent, f)
142 {
143 QVBoxLayout *layout = new QVBoxLayout();
144 layout->addWidget(new QLabel(
145 tr("%1 is shutting down...").arg(PACKAGE_NAME) + "<br /><br />" +
146 tr("Do not shut down the computer until this window disappears.")));
147 setLayout(layout);
148
149 GUIUtil::handleCloseWindowShortcut(this);
150 }
151
showShutdownWindow(QMainWindow * window)152 QWidget* ShutdownWindow::showShutdownWindow(QMainWindow* window)
153 {
154 assert(window != nullptr);
155
156 // Show a simple window indicating shutdown status
157 QWidget *shutdownWindow = new ShutdownWindow();
158 shutdownWindow->setWindowTitle(window->windowTitle());
159
160 // Center shutdown window at where main window was
161 const QPoint global = window->mapToGlobal(window->rect().center());
162 shutdownWindow->move(global.x() - shutdownWindow->width() / 2, global.y() - shutdownWindow->height() / 2);
163 shutdownWindow->show();
164 return shutdownWindow;
165 }
166
closeEvent(QCloseEvent * event)167 void ShutdownWindow::closeEvent(QCloseEvent *event)
168 {
169 event->ignore();
170 }
171