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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Assistant of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef HELPVIEWER_H
#define HELPVIEWER_H
#include <QtCore/QUrl>
#include <QtCore/QVariant>
#include <QtGui/QTextBrowser>
#include <QtGui/QAction>
#if !defined(QT_NO_WEBKIT)
#include <QWebView>
#endif
QT_BEGIN_NAMESPACE
class QHelpEngine;
class CentralWidget;
class QPoint;
class QString;
class QKeyEvent;
class QMouseEvent;
class QContextMenuEvent;
#if !defined(QT_NO_WEBKIT)
class HelpViewer : public QWebView
{
Q_OBJECT
public:
HelpViewer(QHelpEngine *helpEngine, CentralWidget *parent);
void setSource(const QUrl &url);
inline QUrl source() const
{ return url(); }
inline QString documentTitle() const
{ return title(); }
inline bool hasSelection() const
{ return !selectedText().isEmpty(); } // ### this is suboptimal
void resetZoom();
void zoomIn(qreal range = 1);
void zoomOut(qreal range = 1);
inline void copy()
{ return triggerPageAction(QWebPage::Copy); }
inline bool isForwardAvailable() const
{ return pageAction(QWebPage::Forward)->isEnabled(); }
inline bool isBackwardAvailable() const
{ return pageAction(QWebPage::Back)->isEnabled(); }
inline bool hasLoadFinished() const
{ return loadFinished; }
inline qreal zoom() const
{ return textSizeMultiplier(); }
public Q_SLOTS:
void home();
void backward() { back(); }
Q_SIGNALS:
void copyAvailable(bool enabled);
void forwardAvailable(bool enabled);
void backwardAvailable(bool enabled);
void highlighted(const QString &);
void sourceChanged(const QUrl &);
protected:
virtual void wheelEvent(QWheelEvent *);
void mouseReleaseEvent(QMouseEvent *e);
void mousePressEvent(QMouseEvent *event);
private Q_SLOTS:
void actionChanged();
void setLoadFinished(bool ok);
private:
QHelpEngine *helpEngine;
CentralWidget* parentWidget;
bool loadFinished;
};
#else
class HelpViewer : public QTextBrowser
{
Q_OBJECT
public:
HelpViewer(QHelpEngine *helpEngine, CentralWidget *parent);
void setSource(const QUrl &url);
void resetZoom();
void zoomIn(int range = 1);
void zoomOut(int range = 1);
int zoom() const { return zoomCount; }
void setZoom(int zoom) { zoomCount = zoom; }
inline bool hasSelection() const
{ return textCursor().hasSelection(); }
bool launchedWithExternalApp(const QUrl &url);
public Q_SLOTS:
void home();
protected:
void wheelEvent(QWheelEvent *e);
private:
QVariant loadResource(int type, const QUrl &name);
void openLinkInNewTab(const QString &link);
bool hasAnchorAt(const QPoint& pos);
void contextMenuEvent(QContextMenuEvent *e);
void mouseReleaseEvent(QMouseEvent *e);
void keyPressEvent(QKeyEvent *e);
private slots:
void openLinkInNewTab();
private:
int zoomCount;
bool controlPressed;
QString lastAnchor;
QHelpEngine *helpEngine;
CentralWidget* parentWidget;
};
#endif
QT_END_NAMESPACE
#endif
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