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qt 6.5.1 original

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kleuter
2023-10-29 23:33:08 +01:00
parent 71d22ab6b0
commit 85d238dfda
21202 changed files with 5499099 additions and 0 deletions
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39
examples/network/http/CMakeLists.txt Normal file
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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause
cmake_minimum_required(VERSION 3.16)
project(http LANGUAGES CXX)
if(NOT DEFINED INSTALL_EXAMPLESDIR)
set(INSTALL_EXAMPLESDIR "examples")
endif()
set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/network/http")
find_package(Qt6 REQUIRED COMPONENTS Core Gui Network Widgets)
qt_standard_project_setup()
qt_add_executable(http
authenticationdialog.ui
httpwindow.cpp httpwindow.h
main.cpp
)
set_target_properties(http PROPERTIES
WIN32_EXECUTABLE TRUE
MACOSX_BUNDLE TRUE
)
target_link_libraries(http PRIVATE
Qt6::Core
Qt6::Gui
Qt6::Network
Qt6::Widgets
)
install(TARGETS http
RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
)

133
examples/network/http/authenticationdialog.ui Normal file
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<ui version="4.0" >
<class>Dialog</class>
<widget class="QDialog" name="Dialog" >
<property name="geometry" >
<rect>
<x>0</x>
<y>0</y>
<width>389</width>
<height>243</height>
</rect>
</property>
<property name="windowTitle" >
<string>Http authentication required</string>
</property>
<layout class="QGridLayout" >
<item row="0" column="0" colspan="2" >
<widget class="QLabel" name="label" >
<property name="text" >
<string>You need to supply a Username and a Password to access this site</string>
</property>
<property name="wordWrap" >
<bool>false</bool>
</property>
</widget>
</item>
<item row="2" column="0" >
<widget class="QLabel" name="label_2" >
<property name="text" >
<string>Username:</string>
</property>
</widget>
</item>
<item row="2" column="1" >
<widget class="QLineEdit" name="userEdit" />
</item>
<item row="3" column="0" >
<widget class="QLabel" name="label_3" >
<property name="text" >
<string>Password:</string>
</property>
</widget>
</item>
<item row="3" column="1" >
<widget class="QLineEdit" name="passwordEdit">
<property name="echoMode">
<enum>QLineEdit::Password</enum>
</property>
</widget>
</item>
<item row="5" column="0" colspan="2" >
<widget class="QDialogButtonBox" name="buttonBox" >
<property name="orientation" >
<enum>Qt::Horizontal</enum>
</property>
<property name="standardButtons" >
<set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
</property>
</widget>
</item>
<item row="1" column="0" >
<widget class="QLabel" name="label_4" >
<property name="text" >
<string>Site:</string>
</property>
</widget>
</item>
<item row="1" column="1" >
<widget class="QLabel" name="siteDescription" >
<property name="font" >
<font>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
<property name="text" >
<string>%1 at %2</string>
</property>
<property name="wordWrap" >
<bool>true</bool>
</property>
</widget>
</item>
<item row="4" column="0" >
<spacer>
<property name="orientation" >
<enum>Qt::Vertical</enum>
</property>
<property name="sizeHint" >
<size>
<width>20</width>
<height>40</height>
</size>
</property>
</spacer>
</item>
</layout>
</widget>
<resources/>
<connections>
<connection>
<sender>buttonBox</sender>
<signal>accepted()</signal>
<receiver>Dialog</receiver>
<slot>accept()</slot>
<hints>
<hint type="sourcelabel" >
<x>248</x>
<y>254</y>
</hint>
<hint type="destinationlabel" >
<x>157</x>
<y>274</y>
</hint>
</hints>
</connection>
<connection>
<sender>buttonBox</sender>
<signal>rejected()</signal>
<receiver>Dialog</receiver>
<slot>reject()</slot>
<hints>
<hint type="sourcelabel" >
<x>316</x>
<y>260</y>
</hint>
<hint type="destinationlabel" >
<x>286</x>
<y>274</y>
</hint>
</hints>
</connection>
</connections>
</ui>

10
examples/network/http/http.pro Normal file
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QT += network widgets
HEADERS += httpwindow.h
SOURCES += httpwindow.cpp \
main.cpp
FORMS += authenticationdialog.ui
# install
target.path = $$[QT_INSTALL_EXAMPLES]/network/http
INSTALLS += target

306
examples/network/http/httpwindow.cpp Normal file
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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "httpwindow.h"
#include "ui_authenticationdialog.h"
#include <QtWidgets>
#include <QtNetwork>
#include <QUrl>
#include <algorithm>
#include <memory>
#if QT_CONFIG(ssl)
const char defaultUrl[] = "https://www.qt.io/";
#else
const char defaultUrl[] = "http://www.qt.io/";
#endif
const char defaultFileName[] = "index.html";
ProgressDialog::ProgressDialog(const QUrl &url, QWidget *parent)
: QProgressDialog(parent)
{
setWindowTitle(tr("Download Progress"));
setLabelText(tr("Downloading %1.").arg(url.toDisplayString()));
setMinimum(0);
setValue(0);
setMinimumDuration(0);
setMinimumSize(QSize(400, 75));
}
void ProgressDialog::networkReplyProgress(qint64 bytesRead, qint64 totalBytes)
{
setMaximum(totalBytes);
setValue(bytesRead);
}
HttpWindow::HttpWindow(QWidget *parent)
: QDialog(parent)
, statusLabel(new QLabel(tr("Please enter the URL of a file you want to download.\n\n"), this))
, urlLineEdit(new QLineEdit(defaultUrl))
, downloadButton(new QPushButton(tr("Download")))
, launchCheckBox(new QCheckBox(tr("Launch file")))
, defaultFileLineEdit(new QLineEdit(defaultFileName))
, downloadDirectoryLineEdit(new QLineEdit)
{
setWindowTitle(tr("HTTP Client"));
//! [qnam-auth-required-1]
connect(&qnam, &QNetworkAccessManager::authenticationRequired,
this, &HttpWindow::slotAuthenticationRequired);
//! [qnam-auth-required-1]
#if QT_CONFIG(networkproxy)
connect(&qnam, &QNetworkAccessManager::proxyAuthenticationRequired,
this, &HttpWindow::slotProxyAuthenticationRequired);
#endif
QFormLayout *formLayout = new QFormLayout;
urlLineEdit->setClearButtonEnabled(true);
connect(urlLineEdit, &QLineEdit::textChanged, this, &HttpWindow::enableDownloadButton);
formLayout->addRow(tr("&URL:"), urlLineEdit);
QString downloadDirectory = QStandardPaths::writableLocation(QStandardPaths::TempLocation);
if (downloadDirectory.isEmpty() || !QFileInfo(downloadDirectory).isDir())
downloadDirectory = QDir::currentPath();
downloadDirectoryLineEdit->setText(QDir::toNativeSeparators(downloadDirectory));
formLayout->addRow(tr("&Download directory:"), downloadDirectoryLineEdit);
formLayout->addRow(tr("Default &file:"), defaultFileLineEdit);
launchCheckBox->setChecked(true);
formLayout->addRow(launchCheckBox);
QVBoxLayout *mainLayout = new QVBoxLayout(this);
mainLayout->addLayout(formLayout);
mainLayout->addItem(new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::MinimumExpanding));
statusLabel->setWordWrap(true);
mainLayout->addWidget(statusLabel);
downloadButton->setDefault(true);
connect(downloadButton, &QAbstractButton::clicked, this, &HttpWindow::downloadFile);
QPushButton *quitButton = new QPushButton(tr("Quit"));
quitButton->setAutoDefault(false);
connect(quitButton, &QAbstractButton::clicked, this, &QWidget::close);
QDialogButtonBox *buttonBox = new QDialogButtonBox;
buttonBox->addButton(downloadButton, QDialogButtonBox::ActionRole);
buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
mainLayout->addWidget(buttonBox);
urlLineEdit->setFocus();
}
HttpWindow::~HttpWindow() = default;
void HttpWindow::startRequest(const QUrl &requestedUrl)
{
url = requestedUrl;
httpRequestAborted = false;
//! [qnam-download]
reply.reset(qnam.get(QNetworkRequest(url)));
//! [qnam-download]
//! [connecting-reply-to-slots]
connect(reply.get(), &QNetworkReply::finished, this, &HttpWindow::httpFinished);
//! [networkreply-readyread-1]
connect(reply.get(), &QIODevice::readyRead, this, &HttpWindow::httpReadyRead);
//! [networkreply-readyread-1]
#if QT_CONFIG(ssl)
//! [sslerrors-1]
connect(reply.get(), &QNetworkReply::sslErrors, this, &HttpWindow::sslErrors);
//! [sslerrors-1]
#endif
//! [connecting-reply-to-slots]
ProgressDialog *progressDialog = new ProgressDialog(url, this);
progressDialog->setAttribute(Qt::WA_DeleteOnClose);
connect(progressDialog, &QProgressDialog::canceled, this, &HttpWindow::cancelDownload);
connect(reply.get(), &QNetworkReply::downloadProgress,
progressDialog, &ProgressDialog::networkReplyProgress);
connect(reply.get(), &QNetworkReply::finished, progressDialog, &ProgressDialog::hide);
progressDialog->show();
statusLabel->setText(tr("Downloading %1...").arg(url.toString()));
}
void HttpWindow::downloadFile()
{
const QString urlSpec = urlLineEdit->text().trimmed();
if (urlSpec.isEmpty())
return;
const QUrl newUrl = QUrl::fromUserInput(urlSpec);
if (!newUrl.isValid()) {
QMessageBox::information(this, tr("Error"),
tr("Invalid URL: %1: %2").arg(urlSpec, newUrl.errorString()));
return;
}
QString fileName = newUrl.fileName();
if (fileName.isEmpty())
fileName = defaultFileLineEdit->text().trimmed();
if (fileName.isEmpty())
fileName = defaultFileName;
QString downloadDirectory = QDir::cleanPath(downloadDirectoryLineEdit->text().trimmed());
bool useDirectory = !downloadDirectory.isEmpty() && QFileInfo(downloadDirectory).isDir();
if (useDirectory)
fileName.prepend(downloadDirectory + '/');
if (QFile::exists(fileName)) {
QString alreadyExists = useDirectory
? tr("There already exists a file called %1. Overwrite?")
: tr("There already exists a file called %1 in the current directory. "
"Overwrite?");
QMessageBox::StandardButton response = QMessageBox::question(this,
tr("Overwrite Existing File"),
alreadyExists.arg(QDir::toNativeSeparators(fileName)),
QMessageBox::Yes | QMessageBox::No, QMessageBox::No);
if (response == QMessageBox::No)
return;
QFile::remove(fileName);
}
file = openFileForWrite(fileName);
if (!file)
return;
downloadButton->setEnabled(false);
// schedule the request
startRequest(newUrl);
}
std::unique_ptr<QFile> HttpWindow::openFileForWrite(const QString &fileName)
{
std::unique_ptr<QFile> file = std::make_unique<QFile>(fileName);
if (!file->open(QIODevice::WriteOnly)) {
QMessageBox::information(this, tr("Error"),
tr("Unable to save the file %1: %2.")
.arg(QDir::toNativeSeparators(fileName),
file->errorString()));
return nullptr;
}
return file;
}
void HttpWindow::cancelDownload()
{
statusLabel->setText(tr("Download canceled."));
httpRequestAborted = true;
reply->abort();
downloadButton->setEnabled(true);
}
void HttpWindow::httpFinished()
{
QFileInfo fi;
if (file) {
fi.setFile(file->fileName());
file->close();
file.reset();
}
//! [networkreply-error-handling-1]
QNetworkReply::NetworkError error = reply->error();
const QString &errorString = reply->errorString();
//! [networkreply-error-handling-1]
reply.reset();
//! [networkreply-error-handling-2]
if (error != QNetworkReply::NoError) {
QFile::remove(fi.absoluteFilePath());
// For "request aborted" we handle the label and button in cancelDownload()
if (!httpRequestAborted) {
statusLabel->setText(tr("Download failed:\n%1.").arg(errorString));
downloadButton->setEnabled(true);
}
return;
}
//! [networkreply-error-handling-2]
statusLabel->setText(tr("Downloaded %1 bytes to %2\nin\n%3")
.arg(fi.size())
.arg(fi.fileName(), QDir::toNativeSeparators(fi.absolutePath())));
if (launchCheckBox->isChecked())
QDesktopServices::openUrl(QUrl::fromLocalFile(fi.absoluteFilePath()));
downloadButton->setEnabled(true);
}
//! [networkreply-readyread-2]
void HttpWindow::httpReadyRead()
{
// This slot gets called every time the QNetworkReply has new data.
// We read all of its new data and write it into the file.
// That way we use less RAM than when reading it at the finished()
// signal of the QNetworkReply
if (file)
file->write(reply->readAll());
}
//! [networkreply-readyread-2]
void HttpWindow::enableDownloadButton()
{
downloadButton->setEnabled(!urlLineEdit->text().isEmpty());
}
//! [qnam-auth-required-2]
void HttpWindow::slotAuthenticationRequired(QNetworkReply *, QAuthenticator *authenticator)
{
QDialog authenticationDialog;
Ui::Dialog ui;
ui.setupUi(&authenticationDialog);
authenticationDialog.adjustSize();
ui.siteDescription->setText(tr("%1 at %2").arg(authenticator->realm(), url.host()));
// Did the URL have information? Fill the UI.
// This is only relevant if the URL-supplied credentials were wrong
ui.userEdit->setText(url.userName());
ui.passwordEdit->setText(url.password());
if (authenticationDialog.exec() == QDialog::Accepted) {
authenticator->setUser(ui.userEdit->text());
authenticator->setPassword(ui.passwordEdit->text());
}
}
//! [qnam-auth-required-2]
#if QT_CONFIG(ssl)
//! [sslerrors-2]
void HttpWindow::sslErrors(const QList<QSslError> &errors)
{
QString errorString;
for (const QSslError &error : errors) {
if (!errorString.isEmpty())
errorString += '\n';
errorString += error.errorString();
}
if (QMessageBox::warning(this, tr("TLS Errors"),
tr("One or more TLS errors has occurred:\n%1").arg(errorString),
QMessageBox::Ignore | QMessageBox::Abort)
== QMessageBox::Ignore) {
reply->ignoreSslErrors();
}
}
//! [sslerrors-2]
#endif
#if QT_CONFIG(networkproxy)
void HttpWindow::slotProxyAuthenticationRequired(const QNetworkProxy &proxy, QAuthenticator *authenticator)
{
QDialog authenticationDialog;
Ui::Dialog ui;
ui.setupUi(&authenticationDialog);
authenticationDialog.adjustSize();
ui.siteDescription->setText(tr("A network proxy at %1 is requesting credentials for realm: %2")
.arg(proxy.hostName(), authenticator->realm()));
// If the user passed credentials in the URL to http_proxy or similar they may be available to
// us. Otherwise this will just leave the fields empty
ui.userEdit->setText(proxy.user());
ui.passwordEdit->setText(proxy.password());
if (authenticationDialog.exec() == QDialog::Accepted) {
authenticator->setUser(ui.userEdit->text());
authenticator->setPassword(ui.passwordEdit->text());
}
}
#endif

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examples/network/http/httpwindow.h Normal file
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// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef HTTPWINDOW_H
#define HTTPWINDOW_H
#include <QProgressDialog>
#include <QNetworkAccessManager>
#include <QUrl>
#include <memory>
QT_BEGIN_NAMESPACE
class QFile;
class QLabel;
class QLineEdit;
class QPushButton;
class QSslError;
class QAuthenticator;
class QNetworkReply;
class QCheckBox;
#if QT_CONFIG(networkproxy)
class QNetworkProxy;
#endif
QT_END_NAMESPACE
class ProgressDialog : public QProgressDialog {
Q_OBJECT
public:
explicit ProgressDialog(const QUrl &url, QWidget *parent = nullptr);
public slots:
void networkReplyProgress(qint64 bytesRead, qint64 totalBytes);
};
class HttpWindow : public QDialog
{
Q_OBJECT
public:
explicit HttpWindow(QWidget *parent = nullptr);
~HttpWindow();
void startRequest(const QUrl &requestedUrl);
private slots:
void downloadFile();
void cancelDownload();
void httpFinished();
void httpReadyRead();
void enableDownloadButton();
void slotAuthenticationRequired(QNetworkReply *, QAuthenticator *authenticator);
#if QT_CONFIG(ssl)
void sslErrors(const QList<QSslError> &errors);
#endif
#if QT_CONFIG(networkproxy)
void slotProxyAuthenticationRequired(const QNetworkProxy &proxy, QAuthenticator *authenticator);
#endif
private:
std::unique_ptr<QFile> openFileForWrite(const QString &fileName);
QLabel *statusLabel;
QLineEdit *urlLineEdit;
QPushButton *downloadButton;
QCheckBox *launchCheckBox;
QLineEdit *defaultFileLineEdit;
QLineEdit *downloadDirectoryLineEdit;
QUrl url;
QNetworkAccessManager qnam;
QScopedPointer<QNetworkReply, QScopedPointerDeleteLater> reply;
std::unique_ptr<QFile> file;
bool httpRequestAborted = false;
};
#endif

20
examples/network/http/main.cpp Normal file
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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QApplication>
#include <QDir>
#include <QScreen>
#include "httpwindow.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
HttpWindow httpWin;
const QRect availableSize = httpWin.screen()->availableGeometry();
httpWin.resize(availableSize.width() / 5, availableSize.height() / 5);
httpWin.move((availableSize.width() - httpWin.width()) / 2, (availableSize.height() - httpWin.height()) / 2);
httpWin.show();
return app.exec();
}