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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Assistant of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 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 the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef CENTRALWIDGET_H
#define CENTRALWIDGET_H
#include <QtCore/QUrl>
#include <QtCore/QPoint>
#include <QtCore/QObject>
#include <QtGui/QWidget>
#include "searchwidget.h"
QT_BEGIN_NAMESPACE
class QEvent;
class QLabel;
class QAction;
class QCheckBox;
class QLineEdit;
class QTextBrowser;
class QToolButton;
class HelpViewer;
class QTabWidget;
class QHelpEngine;
class CentralWidget;
class PrintHelper;
class MainWindow;
class QHelpSearchEngine;
class FindWidget : public QWidget
{
Q_OBJECT
public:
FindWidget(QWidget *parent = 0);
~FindWidget();
signals:
void findNext();
void findPrevious();
protected:
void hideEvent(QHideEvent* event);
void showEvent(QShowEvent * event);
private slots:
void updateButtons();
private:
QToolButton* setupToolButton(const QString &text, const QString &icon);
private:
QLineEdit *editFind;
QCheckBox *checkCase;
QLabel *labelWrapped;
QToolButton *toolNext;
QToolButton *toolClose;
QToolButton *toolPrevious;
QCheckBox *checkWholeWords;
QPalette appPalette;
friend class CentralWidget;
};
class CentralWidget : public QWidget
{
Q_OBJECT
public:
CentralWidget(QHelpEngine *engine, MainWindow *parent);
~CentralWidget();
void setupWidget();
bool hasSelection() const;
QUrl currentSource() const;
QString currentTitle() const;
bool isHomeAvailable() const;
bool isForwardAvailable() const;
bool isBackwardAvailable() const;
QList<QAction*> globalActions() const;
void setGlobalActions(const QList<QAction*> &actions);
HelpViewer *currentHelpViewer() const;
void activateTab(bool onlyHelpViewer = false);
bool searchWidgetAttached() const {
return m_searchWidget && m_searchWidget->isAttached();
}
void createSearchWidget(QHelpSearchEngine *searchEngine);
void activateSearchWidget(bool updateLastTabPage = false);
void removeSearchWidget();
int availableHelpViewer() const;
bool enableTabCloseAction() const;
void closeTabAt(int index);
QMap<int, QString> currentSourceFileList() const;
static CentralWidget *instance();
public slots:
void zoomIn();
void zoomOut();
void findNext();
void nextPage();
void resetZoom();
void previousPage();
void findPrevious();
void copySelection();
void showTextSearch();
void print();
void pageSetup();
void printPreview();
void updateBrowserFont();
void setSource(const QUrl &url);
void setSourceInNewTab(const QUrl &url, qreal zoom = 0.0);
void findCurrentText(const QString &text);
HelpViewer *newEmptyTab();
void home();
void forward();
void backward();
signals:
void currentViewerChanged();
void copyAvailable(bool yes);
void sourceChanged(const QUrl &url);
void highlighted(const QString &link);
void forwardAvailable(bool available);
void backwardAvailable(bool available);
void addNewBookmark(const QString &title, const QString &url);
protected:
void keyPressEvent(QKeyEvent *);
private slots:
void newTab();
void closeTab();
void setTabTitle(const QUrl& url);
void currentPageChanged(int index);
void showTabBarContextMenu(const QPoint &point);
void printPreview(QPrinter *printer);
void setSourceFromSearch(const QUrl &url);
void setSourceFromSearchInNewTab(const QUrl &url);
void highlightSearchTerms();
private:
void connectSignals();
bool eventFilter(QObject *object, QEvent *e);
void find(const QString &ttf, bool forward);
bool findInWebPage(const QString &ttf, bool forward);
bool findInTextBrowser(const QString &ttf, bool forward);
void initPrinter();
QString quoteTabTitle(const QString &title) const;
void setLastShownPages();
void getBrowserFontFor(QWidget* viewer, QFont *font);
void setBrowserFontFor(QWidget *widget, const QFont &font);
private:
int lastTabPage;
QString collectionFile;
QList<QAction*> globalActionList;
QWidget *findBar;
QTabWidget *tabWidget;
FindWidget *findWidget;
QHelpEngine *helpEngine;
QPrinter *printer;
bool usesDefaultCollection;
SearchWidget *m_searchWidget;
};
QT_END_NAMESPACE
#endif // CENTRALWIDGET_H
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