WebKit/qt/tests/benchmarks/painting/tst_painting.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 17 Sep 2010 09:02:29 +0300
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/*
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 * Copyright (C) 2009 Holger Hans Peter Freyther
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Library General Public
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 * License as published by the Free Software Foundation; either
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 * version 2 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Library General Public License for more details.
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 *
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 * You should have received a copy of the GNU Library General Public License
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 * along with this library; see the file COPYING.LIB.  If not, write to
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 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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 * Boston, MA 02110-1301, USA.
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 */
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#include <QtTest/QtTest>
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#include <qwebelement.h>
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#include <qwebframe.h>
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#include <qwebview.h>
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#include <qpainter.h>
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/**
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 * Starts an event loop that runs until the given signal is received.
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 Optionally the event loop
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 * can return earlier on a timeout.
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 *
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 * \return \p true if the requested signal was received
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 *         \p false on timeout
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 */
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static bool waitForSignal(QObject* obj, const char* signal, int timeout = 0)
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{
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    QEventLoop loop;
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    QObject::connect(obj, signal, &loop, SLOT(quit()));
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    QTimer timer;
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    QSignalSpy timeoutSpy(&timer, SIGNAL(timeout()));
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    if (timeout > 0) {
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        QObject::connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
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        timer.setSingleShot(true);
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        timer.start(timeout);
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    }
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    loop.exec();
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    return timeoutSpy.isEmpty();
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}
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class tst_Painting : public QObject
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{
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    Q_OBJECT
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public:
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public Q_SLOTS:
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    void init();
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    void cleanup();
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private Q_SLOTS:
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    void paint_data();
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    void paint();
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    void textAreas();
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private:
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    QWebView* m_view;
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    QWebPage* m_page;
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};
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void tst_Painting::init()
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{
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    m_view = new QWebView;
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    m_page = m_view->page();
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    QSize viewportSize(1024, 768);
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    m_view->setFixedSize(viewportSize);
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    m_page->setViewportSize(viewportSize);
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}
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void tst_Painting::cleanup()
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{
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    delete m_view;
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}
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void tst_Painting::paint_data()
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{
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    QTest::addColumn<QUrl>("url");
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    QTest::newRow("amazon") << QUrl("http://www.amazon.com");
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}
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void tst_Painting::paint()
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{
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    QFETCH(QUrl, url);
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    m_view->load(url);
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    ::waitForSignal(m_view, SIGNAL(loadFinished(bool)));
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    /* force a layout */
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    QWebFrame* mainFrame = m_page->mainFrame();
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    mainFrame->toPlainText();
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    QPixmap pixmap(m_page->viewportSize());
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    QBENCHMARK {
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        QPainter painter(&pixmap);
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        mainFrame->render(&painter, QRect(QPoint(0, 0), m_page->viewportSize()));
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        painter.end();
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    }
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}
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void tst_Painting::textAreas()
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{
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    m_view->load(QUrl("data:text/html;<html><body></body></html>"));
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    ::waitForSignal(m_view, SIGNAL(loadFinished(bool)));
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    QWebElement bodyElement = m_page->mainFrame()->findFirstElement("body");
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    int count = 100;
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    while (count--) {
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        QString markup("<textarea cols='1' rows='1'></textarea>");
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        bodyElement.appendInside(markup);
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    }
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    /* force a layout */
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    QWebFrame* mainFrame = m_page->mainFrame();
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    mainFrame->toPlainText();
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    QPixmap pixmap(mainFrame->contentsSize());
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    QBENCHMARK {
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        QPainter painter(&pixmap);
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        mainFrame->render(&painter, QRect(QPoint(0, 0), mainFrame->contentsSize()));
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        painter.end();
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    }
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}
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QTEST_MAIN(tst_Painting)
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#include "tst_painting.moc"