1/*
2 * Copyright (C) 2009 Holger Hans Peter Freyther
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB.  If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20#include <QtTest/QtTest>
21
22#include <qwebelement.h>
23#include <qwebframe.h>
24#include <qwebview.h>
25#include <qpainter.h>
26
27/**
28 * Starts an event loop that runs until the given signal is received.
29 Optionally the event loop
30 * can return earlier on a timeout.
31 *
32 * \return \p true if the requested signal was received
33 *         \p false on timeout
34 */
35static bool waitForSignal(QObject* obj, const char* signal, int timeout = 0)
36{
37    QEventLoop loop;
38    QObject::connect(obj, signal, &loop, SLOT(quit()));
39    QTimer timer;
40    QSignalSpy timeoutSpy(&timer, SIGNAL(timeout()));
41    if (timeout > 0) {
42        QObject::connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
43        timer.setSingleShot(true);
44        timer.start(timeout);
45    }
46    loop.exec();
47    return timeoutSpy.isEmpty();
48}
49
50class tst_Painting : public QObject
51{
52    Q_OBJECT
53
54public:
55
56public Q_SLOTS:
57    void init();
58    void cleanup();
59
60private Q_SLOTS:
61    void paint_data();
62    void paint();
63    void textAreas();
64
65private:
66    QWebView* m_view;
67    QWebPage* m_page;
68};
69
70void tst_Painting::init()
71{
72    m_view = new QWebView;
73    m_page = m_view->page();
74
75    QSize viewportSize(1024, 768);
76    m_view->setFixedSize(viewportSize);
77    m_page->setViewportSize(viewportSize);
78}
79
80void tst_Painting::cleanup()
81{
82    delete m_view;
83}
84
85void tst_Painting::paint_data()
86{
87    QTest::addColumn<QUrl>("url");
88    QTest::newRow("amazon") << QUrl("http://www.amazon.com");
89}
90
91void tst_Painting::paint()
92{
93    QFETCH(QUrl, url);
94
95    m_view->load(url);
96    ::waitForSignal(m_view, SIGNAL(loadFinished(bool)));
97
98    /* force a layout */
99    QWebFrame* mainFrame = m_page->mainFrame();
100    mainFrame->toPlainText();
101
102    QPixmap pixmap(m_page->viewportSize());
103    QBENCHMARK {
104        QPainter painter(&pixmap);
105        mainFrame->render(&painter, QRect(QPoint(0, 0), m_page->viewportSize()));
106        painter.end();
107    }
108}
109
110void tst_Painting::textAreas()
111{
112    m_view->load(QUrl("data:text/html;<html><body></body></html>"));
113    ::waitForSignal(m_view, SIGNAL(loadFinished(bool)));
114
115    QWebElement bodyElement = m_page->mainFrame()->findFirstElement("body");
116
117    int count = 100;
118    while (count--) {
119        QString markup("<textarea cols='1' rows='1'></textarea>");
120        bodyElement.appendInside(markup);
121    }
122
123    /* force a layout */
124    QWebFrame* mainFrame = m_page->mainFrame();
125    mainFrame->toPlainText();
126
127    QPixmap pixmap(mainFrame->contentsSize());
128    QBENCHMARK {
129        QPainter painter(&pixmap);
130        mainFrame->render(&painter, QRect(QPoint(0, 0), mainFrame->contentsSize()));
131        painter.end();
132    }
133}
134
135QTEST_MAIN(tst_Painting)
136#include "tst_painting.moc"
137