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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <qlitehtmlwidget.h>
#include <QAction>
#include <QApplication>
#if QT_CONFIG(clipboard)
#include <QClipboard>
#endif
#include <QFileDialog>
#include <QHBoxLayout>
#include <QLabel>
#include <QLineEdit>
#include <QLoggingCategory>
#include <QMenuBar>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QPushButton>
#include <QStatusBar>
#include <QToolBar>
#include <QVBoxLayout>
#include <QWidget>
#ifdef Q_STATIC_LOGGING_CATEGORY
Q_STATIC_LOGGING_CATEGORY(log, "qlitehtml.browser")
#else
static Q_LOGGING_CATEGORY(log, "qlitehtml.browser")
#endif
class BrowserWindow : public QWidget
{
Q_OBJECT
public:
BrowserWindow();
private:
QNetworkAccessManager m_nam;
};
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
BrowserWindow w;
w.show();
return app.exec();
}
BrowserWindow::BrowserWindow()
{
auto vlayout = new QVBoxLayout;
vlayout->setContentsMargins(0, 0, 0, 0);
setLayout(vlayout);
#if QT_CONFIG(clipboard)
auto menuBar = new QMenuBar;
vlayout->addWidget(menuBar);
auto editMenu = menuBar->addMenu(tr("Edit"));
auto copyAction = editMenu->addAction(tr("Copy"));
copyAction->setShortcut(QKeySequence::Copy);
copyAction->setEnabled(false);
auto toolBar = new QToolBar;
vlayout->addWidget(toolBar);
toolBar->addAction(copyAction);
#endif
auto centerWidget = new QWidget;
auto centerLayout = new QVBoxLayout;
centerWidget->setLayout(centerLayout);
vlayout->addWidget(centerWidget, 10);
auto urlLayout = new QHBoxLayout;
urlLayout->addWidget(new QLabel(tr("URL:")));
auto urlInput = new QLineEdit;
urlLayout->addWidget(urlInput);
auto browseButton = new QPushButton(tr("Browse..."));
urlLayout->addWidget(browseButton);
centerLayout->addLayout(urlLayout);
auto htmlWidget = new QLiteHtmlWidget;
centerLayout->addWidget(htmlWidget);
auto statusBar = new QStatusBar;
vlayout->addWidget(statusBar);
resize(1000, 650);
htmlWidget->setResourceHandler([this](const QUrl &url) {
// create blocking request
// TODO implement asynchronous requests in container_qpainter
QEventLoop loop;
QByteArray data;
qCDebug(log) << "Resource requested:" << url;
QNetworkReply *reply = m_nam.get(QNetworkRequest(url));
connect(reply, &QNetworkReply::finished, this, [&data, &loop, reply] {
qCDebug(log) << "Resource finished:" << reply->url() << reply->error();
if (reply->error() == QNetworkReply::NoError)
data = reply->readAll();
reply->deleteLater();
loop.exit();
});
loop.exec(QEventLoop::ExcludeUserInputEvents);
return data;
});
connect(htmlWidget, &QLiteHtmlWidget::linkHighlighted, statusBar, [statusBar](const QUrl &url) {
statusBar->showMessage(url.toString());
});
#if QT_CONFIG(clipboard)
connect(htmlWidget, &QLiteHtmlWidget::copyAvailable, copyAction, &QAction::setEnabled);
connect(copyAction, &QAction::triggered, htmlWidget, [htmlWidget] {
QGuiApplication::clipboard()->setText(htmlWidget->selectedText());
});
#endif
const auto loadUrl = [this, htmlWidget, urlInput, browseButton] {
urlInput->setEnabled(false);
browseButton->setEnabled(false);
const QUrl url = QUrl(urlInput->text().trimmed());
qCDebug(log) << "Url requested:" << url;
QNetworkReply *reply = m_nam.get(QNetworkRequest(url));
connect(reply, &QNetworkReply::finished, this, [htmlWidget, urlInput, browseButton, reply] {
qCDebug(log) << "Url finished:" << reply->url() << reply->error();
if (reply->error() == QNetworkReply::NoError) {
const QByteArray data = reply->readAll();
htmlWidget->setUrl(reply->url());
htmlWidget->setHtml(QString::fromUtf8(data));
}
urlInput->setEnabled(true);
browseButton->setEnabled(true);
reply->deleteLater();
});
};
connect(urlInput, &QLineEdit::returnPressed, this, loadUrl);
connect(browseButton, &QPushButton::clicked, this, [this, urlInput, loadUrl] {
const QUrl url = QFileDialog::getOpenFileUrl(this, tr("Open File"));
if (url.isValid()) {
urlInput->setText(url.toString());
loadUrl();
}
});
QAction *action;
action = new QAction(tr("Enter location"));
action->setShortcut({"Ctrl+L"});
connect(action, &QAction::triggered, [urlInput] { urlInput->setFocus(); });
addAction(action);
}
#include "main.moc"