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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the Graphics Dojo project on Qt Labs.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 or 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#include <QtCore>
#include <QtGui>
#include <QtWebKit>
// for Qt 4.5, we use JQuery
// for Qt >= 4.6, we use the QWebElement API
#if QT_VERSION < 0x040600
#define USE_JQUERY
#endif
#if QT_VERSION < 0x0040500
#error You need Qt 4.5 or newer
#endif
class FancyBrowser : public QMainWindow
{
Q_OBJECT
private:
QString jQuery;
QWebView *view;
QLineEdit *locationEdit;
QString title;
int progress;
public:
FancyBrowser(): QMainWindow(0), progress(0) {
#ifdef USE_JQUERY
QFile file;
file.setFileName(":/jquery.min.js");
file.open(QIODevice::ReadOnly);
jQuery = file.readAll();
file.close();
#endif
view = new QWebView(this);
view->load(QUrl("http://www.google.com/ncr"));
connect(view, SIGNAL(loadFinished(bool)), SLOT(adjustLocation()));
connect(view, SIGNAL(titleChanged(const QString&)), SLOT(adjustTitle(const QString&)));
connect(view, SIGNAL(loadProgress(int)), SLOT(setProgress(int)));
connect(view, SIGNAL(loadFinished(bool)), SLOT(finishLoading(bool)));
locationEdit = new QLineEdit(this);
locationEdit->setSizePolicy(QSizePolicy::Expanding, locationEdit->sizePolicy().verticalPolicy());
connect(locationEdit, SIGNAL(returnPressed()), SLOT(changeLocation()));
QToolBar *toolBar = addToolBar("Navigation");
toolBar->addAction(view->pageAction(QWebPage::Back));
toolBar->addAction(view->pageAction(QWebPage::Forward));
toolBar->addAction(view->pageAction(QWebPage::Reload));
toolBar->addAction(view->pageAction(QWebPage::Stop));
QMenu *toolsMenu = new QMenu(this);
toolsMenu->addAction("Highlight all links", this, SLOT(highlightAllLinks()));
toolsMenu->addSeparator();
toolsMenu->addAction("Remove GIF images", this, SLOT(removeGifImages()));
toolsMenu->addAction("Remove all inline frames", this, SLOT(removeInlineFrames()));
toolsMenu->addAction("Remove all object elements", this, SLOT(removeObjectElements()));
toolsMenu->addAction("Remove all embedded elements", this, SLOT(removeEmbeddedElements()));
QAction *rotateAction = new QAction(this);
rotateAction->setIcon(style()->standardIcon(QStyle::SP_FileDialogDetailedView));
rotateAction->setCheckable(true);
rotateAction->setText("Turn images upside down");
connect(rotateAction, SIGNAL(toggled(bool)), this, SLOT(rotateImages(bool)));
QToolButton *btn = new QToolButton(this);
btn->setIcon(style()->standardIcon(QStyle::SP_FileDialogContentsView));
btn->setMenu(toolsMenu);
btn->setPopupMode(QToolButton::InstantPopup);
toolBar->addWidget(btn);
toolBar->addAction(rotateAction);
toolBar->addWidget(locationEdit);
setCentralWidget(view);
title = "Fancy Browser";
}
protected slots:
void adjustLocation() {
locationEdit->setText(view->url().toString());
}
void adjustTitle(const QString &t) {
title = t;
if (progress <= 0 || progress >= 100)
setWindowTitle(title);
else
setWindowTitle(QString("%1 (%2%)").arg(title).arg(progress));
}
void setProgress(int p) {
progress = p;
adjustTitle(title);
}
void finishLoading(bool) {
progress = 100;
adjustTitle(title);
#ifdef USE_JQUERY
view->page()->mainFrame()->evaluateJavaScript(jQuery);
#endif
}
void changeLocation() {
QUrl url = QUrl(locationEdit->text());
locationEdit->setText(url.toString());
view->load(url);
view->setFocus();
}
#ifdef USE_JQUERY
void highlightAllLinks() {
QString code = "$('a').each( function () { $(this).css('background-color', 'yellow') } )";
view->page()->mainFrame()->evaluateJavaScript(code);
}
void rotateImages(bool toggle) {
QString code = "$('img').each( function () { $(this).css('-webkit-transition', '-webkit-transform 2s') } )";
view->page()->mainFrame()->evaluateJavaScript(code);
if (toggle)
code = "$('img').each( function () { $(this).css('-webkit-transform', 'rotate(180deg)') } )";
else
code = "$('img').each( function () { $(this).css('-webkit-transform', 'rotate(0deg)') } )";
view->page()->mainFrame()->evaluateJavaScript(code);
}
void removeGifImages() {
QString code = "$('[src*=gif]').remove()";
view->page()->mainFrame()->evaluateJavaScript(code);
}
void removeInlineFrames() {
QString code = "$('iframe').remove()";
view->page()->mainFrame()->evaluateJavaScript(code);
}
void removeObjectElements() {
QString code = "$('object').remove()";
view->page()->mainFrame()->evaluateJavaScript(code);
}
void removeEmbeddedElements() {
QString code = "$('embed').remove()";
view->page()->mainFrame()->evaluateJavaScript(code);
}
#else
void highlightAllLinks() {
foreach (QWebElement element, view->page()->mainFrame()->findAllElements("a"))
element.setStyleProperty("background-color", "yellow");
}
void rotateImages(bool toggle) {
foreach (QWebElement element, view->page()->mainFrame()->findAllElements("img")) {
element.setStyleProperty("-webkit-transition", "-webkit-transform 2s");
if (toggle)
element.setStyleProperty("-webkit-transform", "rotate(180deg)");
else
element.setStyleProperty("-webkit-transform", "rotate(0deg)");
}
}
void removeGifImages() {
foreach (QWebElement element, view->page()->mainFrame()->findAllElements("[src*=gif]"))
element.remove();
}
void removeInlineFrames() {
foreach (QWebElement element, view->page()->mainFrame()->findAllElements("iframe"))
element.remove();
}
void removeObjectElements() {
foreach (QWebElement element, view->page()->mainFrame()->findAllElements("object"))
element.remove();
}
void removeEmbeddedElements() {
foreach (QWebElement element, view->page()->mainFrame()->findAllElements("embed"))
element.remove();
}
#endif
};
#include "fancybrowser.moc"
int main(int argc, char **argv)
{
QApplication app(argc, argv);
QWebSettings::globalSettings()->setAttribute(QWebSettings::JavascriptEnabled, true);
QWebSettings::globalSettings()->setAttribute(QWebSettings::PluginsEnabled, true);
FancyBrowser browser;
browser.setWindowTitle("Fancy Browser");
browser.show();
return app.exec();
}
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