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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "aboutdialog.h"
#include "helpviewer.h"
#include "tracer.h"
#include <QtCore/QBuffer>
#include <QtWidgets/QLabel>
#include <QtWidgets/QPushButton>
#include <QtWidgets/QLayout>
#include <QtWidgets/QApplication>
#include <QtWidgets/QMessageBox>
#include <QtGui/QDesktopServices>
#include <QtGui/QScreen>
QT_BEGIN_NAMESPACE
AboutLabel::AboutLabel(QWidget *parent)
: QTextBrowser(parent)
{
TRACE_OBJ
setFrameStyle(QFrame::NoFrame);
QPalette p;
p.setColor(QPalette::Base, p.color(QPalette::Window));
setPalette(p);
}
void AboutLabel::setText(const QString &text, const QByteArray &resources)
{
TRACE_OBJ
QDataStream in(resources);
in >> m_resourceMap;
QTextBrowser::setText(text);
}
QSize AboutLabel::minimumSizeHint() const
{
TRACE_OBJ
QTextDocument *doc = document();
doc->adjustSize();
return QSize(int(doc->size().width()), int(doc->size().height()));
}
QVariant AboutLabel::loadResource(int type, const QUrl &name)
{
TRACE_OBJ
if (type == 2 || type == 3) {
if (m_resourceMap.contains(name.toString())) {
return m_resourceMap.value(name.toString());
}
}
return QVariant();
}
void AboutLabel::doSetSource(const QUrl &url, QTextDocument::ResourceType type)
{
TRACE_OBJ
Q_UNUSED(type);
if (url.isValid() && (!HelpViewer::isLocalUrl(url)
|| !HelpViewer::canOpenPage(url.path()))) {
if (!QDesktopServices::openUrl(url)) {
QMessageBox::warning(this, tr("Warning"),
tr("Unable to launch external application."), QMessageBox::Close);
}
}
}
AboutDialog::AboutDialog(QWidget *parent)
: QDialog(parent, Qt::MSWindowsFixedSizeDialogHint |
Qt::WindowTitleHint|Qt::WindowSystemMenuHint)
{
TRACE_OBJ
m_pixmapLabel = nullptr;
m_aboutLabel = new AboutLabel();
m_closeButton = new QPushButton();
m_closeButton->setText(tr("&Close"));
connect(m_closeButton, &QAbstractButton::clicked, this, &QWidget::close);
m_layout = new QGridLayout(this);
m_layout->addWidget(m_aboutLabel, 1, 0, 1, -1);
m_layout->addItem(new QSpacerItem(20, 10, QSizePolicy::Minimum,
QSizePolicy::Fixed), 2, 1, 1, 1);
m_layout->addItem(new QSpacerItem(20, 20, QSizePolicy::Expanding), 3, 0, 1, 1);
m_layout->addWidget(m_closeButton, 3, 1, 1, 1);
m_layout->addItem(new QSpacerItem(20, 20, QSizePolicy::Expanding), 3, 2, 1, 1);
}
void AboutDialog::setText(const QString &text, const QByteArray &resources)
{
TRACE_OBJ
m_aboutLabel->setText(text, resources);
updateSize();
}
void AboutDialog::setPixmap(const QPixmap &pixmap)
{
TRACE_OBJ
if (!m_pixmapLabel) {
m_pixmapLabel = new QLabel();
m_layout->addWidget(m_pixmapLabel, 0, 0, 1, -1, Qt::AlignCenter);
}
m_pixmapLabel->setPixmap(pixmap);
updateSize();
}
QString AboutDialog::documentTitle() const
{
TRACE_OBJ
return m_aboutLabel->documentTitle();
}
void AboutDialog::updateSize()
{
TRACE_OBJ
auto screen = QGuiApplication::screenAt(QCursor::pos());
if (!screen)
screen = QGuiApplication::primaryScreen();
const QSize screenSize = screen->availableSize();
int limit = qMin(screenSize.width()/2, 500);
#ifdef Q_OS_MAC
limit = qMin(screenSize.width()/2, 420);
#endif
layout()->activate();
int width = layout()->totalMinimumSize().width();
if (width > limit)
width = limit;
QFontMetrics fm(qApp->font("QWorkspaceTitleBar"));
int windowTitleWidth = qMin(fm.horizontalAdvance(windowTitle()) + 50, limit);
if (windowTitleWidth > width)
width = windowTitleWidth;
layout()->activate();
int height = (layout()->hasHeightForWidth())
? layout()->totalHeightForWidth(width)
: layout()->totalMinimumSize().height();
setFixedSize(width, height);
QCoreApplication::removePostedEvents(this, QEvent::LayoutRequest);
}
QT_END_NAMESPACE
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