1 files changed, 115 insertions, 0 deletions
diff --git a/examples/webenginewidgets/printme/printhandler.cpp b/examples/webenginewidgets/printme/printhandler.cpp
new file mode 100644
index 000000000..d8c4fc177
--- /dev/null
+++ b/examples/webenginewidgets/printme/printhandler.cpp
@@ -0,0 +1,115 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "printhandler.h"
+#include <QEventLoop>
+#include <QPrintDialog>
+#include <QPrinter>
+#include <QPainter>
+#include <QPrintPreviewDialog>
+#include <QWebEnginePage>
+
+PrintHandler::PrintHandler(QObject *parent)
+    : QObject(parent)
+{
+
+}
+
+void PrintHandler::setPage(QWebEnginePage *page)
+{
+    Q_ASSERT(!m_page);
+    m_page = page;
+    connect(m_page, &QWebEnginePage::printRequested, this, &PrintHandler::printPreview);
+}
+
+void PrintHandler::print()
+{
+    QPrinter printer(QPrinter::HighResolution);
+    QPrintDialog dialog(&printer, m_page->view());
+    if (dialog.exec() != QDialog::Accepted)
+        return;
+    printDocument(&printer);
+}
+
+void PrintHandler::printDocument(QPrinter *printer)
+{
+    QEventLoop loop;
+    bool result;
+    auto printPreview = [&](bool success) { result = success; loop.quit(); };
+    m_page->print(printer, std::move(printPreview));
+    loop.exec();
+    if (!result) {
+        QPainter painter;
+        if (painter.begin(printer)) {
+            QFont font = painter.font();
+            font.setPixelSize(20);
+            painter.setFont(font);
+            painter.drawText(QPointF(10,25),
+                             QStringLiteral("Could not generate print preview."));
+
+            painter.end();
+        }
+    }
+}
+
+void PrintHandler::printPreview()
+{
+    if (!m_page)
+        return;
+    if (m_inPrintPreview)
+        return;
+    m_inPrintPreview = true;
+    QPrinter printer;
+    QPrintPreviewDialog preview(&printer, m_page->view());
+    connect(&preview, &QPrintPreviewDialog::paintRequested,
+            this, &PrintHandler::printDocument);
+    preview.exec();
+    m_inPrintPreview = false;
+}