webscrollbarmanager.h

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/* ============================================================
* Falkon - Qt web browser
* Copyright (C) 2016 David Rosca <nowrep@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program.  If not, see <http://www.gnu.org/licenses/>.
* ============================================================ */
 
#ifndef WEBSCROLLBARMANAGER_H
#define WEBSCROLLBARMANAGER_H
 
#include <QObject>
#include <QHash>
 
class QScrollBar;
 
class WebView;
 
class WebScrollBarManager : public QObject
{
    Q_OBJECT
 
public:
    explicit WebScrollBarManager(QObject *parent = nullptr);
 
    void loadSettings();
 
    void addWebView(WebView *view);
    void removeWebView(WebView *view);
 
    QScrollBar *scrollBar(Qt::Orientation orientation, WebView *view) const;
 
    static WebScrollBarManager *instance();
 
private:
    void createUserScript(int thickness);
    void removeUserScript();
    QSize viewportSize(WebView *view, int thickness) const;
 
    bool m_enabled = true;
    QString m_scrollbarJs;
    QHash<WebView*, struct ScrollBarData*> m_scrollbars;
};
 
#endif // WEBSCROLLBARMANAGER_H