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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <QtWebEngineCore/private/qtwebenginecoreglobal_p.h>
#include <QtWebEngineCore/qtwebenginecore-config.h>
#include <QWebEngineSettings>
#include <QWebEngineView>
#include <QTemporaryDir>
#include <QTest>
#include <QSignalSpy>
#include <util.h>
#if QT_CONFIG(webengine_system_poppler)
#include <poppler-document.h>
#include <poppler-page.h>
#endif
class tst_Printing : public QObject
{
Q_OBJECT
private slots:
void printToPdfBasic();
void printRequest();
#if QT_CONFIG(webengine_system_poppler)
void printToPdfPoppler();
void printFromPdfViewer();
#endif
void interruptPrinting();
};
void tst_Printing::printToPdfBasic()
{
QTemporaryDir tempDir(QDir::tempPath() + "/tst_qwebengineview-XXXXXX");
QVERIFY(tempDir.isValid());
QWebEngineView view;
QSignalSpy spy(&view, &QWebEngineView::loadFinished);
view.load(QUrl("qrc:///resources/basic_printing_page.html"));
QTRY_VERIFY(spy.size() == 1);
QSignalSpy savePdfSpy(view.page(), &QWebEnginePage::pdfPrintingFinished);
QPageLayout layout(QPageSize(QPageSize::A4), QPageLayout::Portrait, QMarginsF(0.0, 0.0, 0.0, 0.0));
QString path = tempDir.path() + "/print_1_success.pdf";
view.page()->printToPdf(path, layout);
QTRY_VERIFY2(savePdfSpy.size() == 1, "Printing to PDF file failed without signal");
QList<QVariant> successArguments = savePdfSpy.takeFirst();
QVERIFY2(successArguments.at(0).toString() == path, "File path for first saved PDF does not match arguments");
QVERIFY2(successArguments.at(1).toBool() == true, "Printing to PDF file failed though it should succeed");
#if !defined(Q_OS_WIN)
path = tempDir.path() + "/print_//2_failed.pdf";
#else
path = tempDir.path() + "/print_|2_failed.pdf";
#endif
view.page()->printToPdf(path, QPageLayout());
QTRY_VERIFY2(savePdfSpy.size() == 1, "Printing to PDF file failed without signal");
QList<QVariant> failedArguments = savePdfSpy.takeFirst();
QVERIFY2(failedArguments.at(0).toString() == path, "File path for second saved PDF does not match arguments");
QVERIFY2(failedArguments.at(1).toBool() == false, "Printing to PDF file succeeded though it should fail");
CallbackSpy<QByteArray> successfulSpy;
view.page()->printToPdf(successfulSpy.ref(), layout);
QVERIFY(successfulSpy.waitForResult().size() > 0);
CallbackSpy<QByteArray> failedInvalidLayoutSpy;
view.page()->printToPdf(failedInvalidLayoutSpy.ref(), QPageLayout());
QCOMPARE(failedInvalidLayoutSpy.waitForResult().size(), 0);
}
void tst_Printing::printRequest()
{
QWebEngineView view;
QPageLayout layout(QPageSize(QPageSize::A4), QPageLayout::Portrait, QMarginsF(0.0, 0.0, 0.0, 0.0));
QSignalSpy loadFinishedSpy(&view, &QWebEngineView::loadFinished);
QSignalSpy printRequestedSpy(&view, &QWebEngineView::printRequested);
QSignalSpy printRequestedSpy2(view.page(), &QWebEnginePage::printRequested);
QSignalSpy savePdfSpy(&view, &QWebEngineView::pdfPrintingFinished);
CallbackSpy<QByteArray> resultSpy;
view.load(QUrl("qrc:///resources/basic_printing_page.html"));
QTRY_VERIFY(loadFinishedSpy.size() == 1);
view.page()->runJavaScript("window.print()");
QTRY_VERIFY(printRequestedSpy.size() == 1);
QVERIFY(printRequestedSpy2.size() == 1);
//check if printing still works
view.printToPdf(resultSpy.ref(), layout);
const QByteArray data = resultSpy.waitForResult();
QVERIFY(data.size() > 0);
}
#if QT_CONFIG(webengine_system_poppler)
void tst_Printing::printToPdfPoppler()
{
// check if generated pdf is correct by searching for a know string on the page
using namespace poppler;
QWebEngineView view;
QPageLayout layout(QPageSize(QPageSize::A4), QPageLayout::Portrait, QMarginsF(0.0, 0.0, 0.0, 0.0));
QSignalSpy spy(&view, &QWebEngineView::loadFinished);
QSignalSpy savePdfSpy(&view, &QWebEngineView::pdfPrintingFinished);
CallbackSpy<QByteArray> resultSpy;
view.load(QUrl("qrc:///resources/basic_printing_page.html"));
QTRY_VERIFY(spy.count() == 1);
view.printToPdf(resultSpy.ref(), layout);
const QByteArray data = resultSpy.waitForResult();
QVERIFY(data.length() > 0);
QScopedPointer<document> pdf(document::load_from_raw_data(data.constData(), data.length()));
QVERIFY(pdf);
const int pages = pdf->pages();
QVERIFY(pages == 1);
QScopedPointer<page> pdfPage(pdf->create_page(0));
rectf rect;
QVERIFY2(pdfPage->search(ustring::from_latin1("Hello Paper World"), rect, page::search_from_top,
case_sensitive ), "Could not find text");
}
void tst_Printing::printFromPdfViewer()
{
using namespace poppler;
QWebEngineView view;
view.page()->settings()->setAttribute(QWebEngineSettings::PluginsEnabled, true);
view.page()->settings()->setAttribute(QWebEngineSettings::PdfViewerEnabled, true);
// Load a basic HTML
QSignalSpy spy(&view, &QWebEngineView::loadFinished);
view.load(QUrl("qrc:///resources/basic_printing_page.html"));
QTRY_COMPARE(spy.size(), 1);
// Create a PDF
QTemporaryDir tempDir(QDir::tempPath() + "/tst_printing-XXXXXX");
QVERIFY(tempDir.isValid());
QString path = tempDir.path() + "/basic_page.pdf";
QSignalSpy savePdfSpy(view.page(), &QWebEnginePage::pdfPrintingFinished);
view.page()->printToPdf(path);
QTRY_COMPARE(savePdfSpy.size(), 1);
// Open the new file with the PDF viewer plugin
view.load(QUrl("file://" + path));
QTRY_COMPARE(spy.size(), 2);
// Print from the plugin
// loadFinished signal is not reliable when loading a PDF file, because it has multiple phases.
// Workaround: Try to print it a couple of times until the result matches the expected.
CallbackSpy<QByteArray> resultSpy;
bool ok = QTest::qWaitFor([&]() -> bool {
view.printToPdf(resultSpy.ref());
QByteArray data = resultSpy.waitForResult();
// Check if the result contains text from the original basic HTML
// This catches all the typical issues: empty result or printing the WebUI without PDF content.
QScopedPointer<document> pdf(document::load_from_raw_data(data.constData(), data.length()));
QScopedPointer<page> pdfPage(pdf->create_page(0));
rectf rect;
return pdfPage->search(ustring::from_latin1("Hello Paper World"), rect, page::search_from_top,
case_sensitive);
}, 10000);
QVERIFY(ok);
}
#endif
void tst_Printing::interruptPrinting()
{
QWebEngineView view;
QSignalSpy spy(&view, &QWebEngineView::loadFinished);
view.load(QUrl("qrc:///resources/basic_printing_page.html"));
QTRY_VERIFY(spy.size() == 1);
QTemporaryDir tempDir(QDir::tempPath() + "/tst_qwebengineview-XXXXXX");
QVERIFY(tempDir.isValid());
view.page()->printToPdf(tempDir.path() + "/file.pdf");
// Navigation stop interrupts print job, preferably do this without crash/assert
view.page()->triggerAction(QWebEnginePage::Stop);
}
QTEST_MAIN(tst_Printing)
#include "tst_printing.moc"
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