komparesplitter.h

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/***************************************************************************
                                komparesplitter.h
                                -----------------
        begin                   : Wed Jan 14 2004
        Copyright 2004      Jeff Snyder  <jeff@caffeinated.me.uk>
        Copyright 2007-2011 Kevin Kofler <kevin.kofler@chello.at>
****************************************************************************/

/***************************************************************************
**
**   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 2 of the License, or
**   (at your option) any later version.
**
***************************************************************************/

#ifndef _KOMPARESPLITTER_H_
#define _KOMPARESPLITTER_H_

#include <QtGui/QSplitter>

#include "komparemodellist.h"

class QSplitterHandle;
class QTimer;
class QScrollBar;
class QWheelEvent;
class QKeyEvent;

namespace Diff2 {
class DiffModel;
class Difference;
}
class ViewSettings;

class KompareListView;
class KompareConnectWidget;

class KompareSplitter : public QSplitter
{
    Q_OBJECT

public:
    KompareSplitter(ViewSettings *settings, QWidget *parent);
    ~KompareSplitter();

signals:
    void configChanged();

    void scrollViewsToId( int id );
    void setXOffset( int x );

    void selectionChanged( const Diff2::Difference* diff );

public slots:
    void slotScrollToId( int id );
    void slotDelayedUpdateScrollBars();
    void slotUpdateScrollBars();
    void slotDelayedUpdateVScrollValue();
    void slotUpdateVScrollValue();
    void keyPressEvent( QKeyEvent* e );

    void slotApplyDifference( bool apply );
    void slotApplyAllDifferences( bool apply );
    void slotApplyDifference( const Diff2::Difference* diff, bool apply );

    void slotSetSelection( const Diff2::DiffModel* model, const Diff2::Difference* diff );
    void slotSetSelection( const Diff2::Difference* diff );

    void slotDifferenceClicked( const Diff2::Difference* diff );

    void slotConfigChanged();

protected:
    void wheelEvent( QWheelEvent* e );

    ViewSettings* settings() const { return m_settings; }

protected slots:
    void slotDelayedRepaintHandles();
    void slotRepaintHandles();
    void timerTimeout();

private:
    // override from QSplitter
    QSplitterHandle* createHandle();

    void               setCursor( int id, const QCursor& cursor );
    void               unsetCursor( int id );

protected:
    KompareListView* listView( int index );
    KompareConnectWidget* connectWidget( int index );

private:

    // Scrollbars. all this just for the goddamn scrollbars. i hate them.
    int  scrollId();
    int  lineHeight();
    int  pageSize();
    bool needVScrollBar();
    int  minVScrollId();
    int  maxVScrollId();
    bool needHScrollBar();
    int  minHScrollId();
    int  maxHScrollId();
    int  maxContentsX();
    int  minVisibleWidth();

    QTimer*            m_scrollTimer;
    bool               m_restartTimer;
    int                m_scrollTo;

    ViewSettings*      m_settings;
    QScrollBar*        m_vScroll;
    QScrollBar*        m_hScroll;

    friend class KompareConnectWidgetFrame;
};
#endif //_KOMPARESPLITTER_H_