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// Copyright (c) 2011-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#if defined(HAVE_CONFIG_H)
#include <config/bitcoin-config.h>
#endif
#include <qt/utilitydialog.h>
#include <qt/forms/ui_helpmessagedialog.h>
#include <qt/guiutil.h>
#include <clientversion.h>
#include <common/args.h>
#include <init.h>
#include <util/strencodings.h>
#include <cstdio>
#include <QCloseEvent>
#include <QLabel>
#include <QMainWindow>
#include <QRegularExpression>
#include <QString>
#include <QTextCursor>
#include <QTextTable>
#include <QVBoxLayout>
/** "Help message" or "About" dialog box */
HelpMessageDialog::HelpMessageDialog(QWidget *parent, bool about) :
QDialog(parent, GUIUtil::dialog_flags),
ui(new Ui::HelpMessageDialog)
{
ui->setupUi(this);
QString version = QString{PACKAGE_NAME} + " " + tr("version") + " " + QString::fromStdString(FormatFullVersion());
if (about)
{
setWindowTitle(tr("About %1").arg(PACKAGE_NAME));
std::string licenseInfo = LicenseInfo();
/// HTML-format the license message from the core
QString licenseInfoHTML = QString::fromStdString(LicenseInfo());
// Make URLs clickable
QRegularExpression uri(QStringLiteral("<(.*)>"), QRegularExpression::InvertedGreedinessOption);
licenseInfoHTML.replace(uri, QStringLiteral("<a href=\"\\1\">\\1</a>"));
// Replace newlines with HTML breaks
licenseInfoHTML.replace("\n", "<br>");
ui->aboutMessage->setTextFormat(Qt::RichText);
ui->scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
text = version + "\n" + QString::fromStdString(FormatParagraph(licenseInfo));
ui->aboutMessage->setText(version + "<br><br>" + licenseInfoHTML);
ui->aboutMessage->setWordWrap(true);
ui->helpMessage->setVisible(false);
} else {
setWindowTitle(tr("Command-line options"));
QString header = "Usage: bitcoin-qt [command-line options] [URI]\n\n"
"Optional URI is a Bitcoin address in BIP21 URI format.\n";
QTextCursor cursor(ui->helpMessage->document());
cursor.insertText(version);
cursor.insertBlock();
cursor.insertText(header);
cursor.insertBlock();
std::string strUsage = gArgs.GetHelpMessage();
QString coreOptions = QString::fromStdString(strUsage);
text = version + "\n\n" + header + "\n" + coreOptions;
QTextTableFormat tf;
tf.setBorderStyle(QTextFrameFormat::BorderStyle_None);
tf.setCellPadding(2);
QVector<QTextLength> widths;
widths << QTextLength(QTextLength::PercentageLength, 35);
widths << QTextLength(QTextLength::PercentageLength, 65);
tf.setColumnWidthConstraints(widths);
QTextCharFormat bold;
bold.setFontWeight(QFont::Bold);
for (const QString &line : coreOptions.split("\n")) {
if (line.startsWith(" -"))
{
cursor.currentTable()->appendRows(1);
cursor.movePosition(QTextCursor::PreviousCell);
cursor.movePosition(QTextCursor::NextRow);
cursor.insertText(line.trimmed());
cursor.movePosition(QTextCursor::NextCell);
} else if (line.startsWith(" ")) {
cursor.insertText(line.trimmed()+' ');
} else if (line.size() > 0) {
//Title of a group
if (cursor.currentTable())
cursor.currentTable()->appendRows(1);
cursor.movePosition(QTextCursor::Down);
cursor.insertText(line.trimmed(), bold);
cursor.insertTable(1, 2, tf);
}
}
ui->helpMessage->moveCursor(QTextCursor::Start);
ui->scrollArea->setVisible(false);
ui->aboutLogo->setVisible(false);
}
GUIUtil::handleCloseWindowShortcut(this);
}
HelpMessageDialog::~HelpMessageDialog()
{
delete ui;
}
void HelpMessageDialog::printToConsole()
{
// On other operating systems, the expected action is to print the message to the console.
tfm::format(std::cout, "%s\n", qPrintable(text));
}
void HelpMessageDialog::showOrPrint()
{
#if defined(WIN32)
// On Windows, show a message box, as there is no stderr/stdout in windowed applications
exec();
#else
// On other operating systems, print help text to console
printToConsole();
#endif
}
void HelpMessageDialog::on_okButton_accepted()
{
close();
}
/** "Shutdown" window */
ShutdownWindow::ShutdownWindow(QWidget *parent, Qt::WindowFlags f):
QWidget(parent, f)
{
QVBoxLayout *layout = new QVBoxLayout();
layout->addWidget(new QLabel(
tr("%1 is shutting down…").arg(PACKAGE_NAME) + "<br /><br />" +
tr("Do not shut down the computer until this window disappears.")));
setLayout(layout);
GUIUtil::handleCloseWindowShortcut(this);
}
QWidget* ShutdownWindow::showShutdownWindow(QMainWindow* window)
{
assert(window != nullptr);
// Show a simple window indicating shutdown status
QWidget *shutdownWindow = new ShutdownWindow();
shutdownWindow->setWindowTitle(window->windowTitle());
// Center shutdown window at where main window was
const QPoint global = window->mapToGlobal(window->rect().center());
shutdownWindow->move(global.x() - shutdownWindow->width() / 2, global.y() - shutdownWindow->height() / 2);
shutdownWindow->show();
return shutdownWindow;
}
void ShutdownWindow::closeEvent(QCloseEvent *event)
{
event->ignore();
}
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